Update aosp/master Clang for rebase to r222490.
Change-Id: Ic557ac55e97fbf6ee08771c7b7c3594777b0aefd
diff --git a/lib/Frontend/ASTConsumers.cpp b/lib/Frontend/ASTConsumers.cpp
index 54a6d47..f53c614 100644
--- a/lib/Frontend/ASTConsumers.cpp
+++ b/lib/Frontend/ASTConsumers.cpp
@@ -57,7 +57,8 @@
bool ShowColors = Out.has_colors();
if (ShowColors)
Out.changeColor(raw_ostream::BLUE);
- Out << (Dump ? "Dumping " : "Printing ") << getName(D) << ":\n";
+ Out << ((Dump || DumpLookups) ? "Dumping " : "Printing ") << getName(D)
+ << ":\n";
if (ShowColors)
Out.resetColor();
print(D);
@@ -79,9 +80,13 @@
}
void print(Decl *D) {
if (DumpLookups) {
- if (DeclContext *DC = dyn_cast<DeclContext>(D))
- DC->dumpLookups(Out);
- else
+ if (DeclContext *DC = dyn_cast<DeclContext>(D)) {
+ if (DC == DC->getPrimaryContext())
+ DC->dumpLookups(Out, Dump);
+ else
+ Out << "Lookup map is in primary DeclContext "
+ << DC->getPrimaryContext() << "\n";
+ } else
Out << "Not a DeclContext\n";
} else if (Dump)
D->dump(Out);
@@ -118,17 +123,21 @@
};
} // end anonymous namespace
-ASTConsumer *clang::CreateASTPrinter(raw_ostream *Out,
- StringRef FilterString) {
- return new ASTPrinter(Out, /*Dump=*/ false, FilterString);
+std::unique_ptr<ASTConsumer> clang::CreateASTPrinter(raw_ostream *Out,
+ StringRef FilterString) {
+ return llvm::make_unique<ASTPrinter>(Out, /*Dump=*/false, FilterString);
}
-ASTConsumer *clang::CreateASTDumper(StringRef FilterString, bool DumpLookups) {
- return new ASTPrinter(nullptr, /*Dump=*/true, FilterString, DumpLookups);
+std::unique_ptr<ASTConsumer> clang::CreateASTDumper(StringRef FilterString,
+ bool DumpDecls,
+ bool DumpLookups) {
+ assert((DumpDecls || DumpLookups) && "nothing to dump");
+ return llvm::make_unique<ASTPrinter>(nullptr, DumpDecls, FilterString,
+ DumpLookups);
}
-ASTConsumer *clang::CreateASTDeclNodeLister() {
- return new ASTDeclNodeLister(nullptr);
+std::unique_ptr<ASTConsumer> clang::CreateASTDeclNodeLister() {
+ return llvm::make_unique<ASTDeclNodeLister>(nullptr);
}
//===----------------------------------------------------------------------===//
@@ -164,8 +173,9 @@
}
}
-
-ASTConsumer *clang::CreateASTViewer() { return new ASTViewer(); }
+std::unique_ptr<ASTConsumer> clang::CreateASTViewer() {
+ return llvm::make_unique<ASTViewer>();
+}
//===----------------------------------------------------------------------===//
/// DeclContextPrinter - Decl and DeclContext Visualization
@@ -475,6 +485,6 @@
}
}
}
-ASTConsumer *clang::CreateDeclContextPrinter() {
- return new DeclContextPrinter();
+std::unique_ptr<ASTConsumer> clang::CreateDeclContextPrinter() {
+ return llvm::make_unique<DeclContextPrinter>();
}
diff --git a/lib/Frontend/ASTMerge.cpp b/lib/Frontend/ASTMerge.cpp
index ff6434c..216ac6a 100644
--- a/lib/Frontend/ASTMerge.cpp
+++ b/lib/Frontend/ASTMerge.cpp
@@ -16,8 +16,8 @@
using namespace clang;
-ASTConsumer *ASTMergeAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
+std::unique_ptr<ASTConsumer>
+ASTMergeAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
return AdaptedAction->CreateASTConsumer(CI, InFile);
}
@@ -45,8 +45,8 @@
new ForwardingDiagnosticConsumer(
*CI.getDiagnostics().getClient()),
/*ShouldOwnClient=*/true));
- ASTUnit *Unit = ASTUnit::LoadFromASTFile(ASTFiles[I], Diags,
- CI.getFileSystemOpts(), false);
+ std::unique_ptr<ASTUnit> Unit = ASTUnit::LoadFromASTFile(
+ ASTFiles[I], Diags, CI.getFileSystemOpts(), false);
if (!Unit)
continue;
@@ -66,8 +66,6 @@
Importer.Import(D);
}
-
- delete Unit;
}
AdaptedAction->ExecuteAction();
diff --git a/lib/Frontend/ASTUnit.cpp b/lib/Frontend/ASTUnit.cpp
index fc44d9f..a3998fa 100644
--- a/lib/Frontend/ASTUnit.cpp
+++ b/lib/Frontend/ASTUnit.cpp
@@ -105,7 +105,8 @@
static void cleanupOnDiskMapAtExit();
-typedef llvm::DenseMap<const ASTUnit *, OnDiskData *> OnDiskDataMap;
+typedef llvm::DenseMap<const ASTUnit *,
+ std::unique_ptr<OnDiskData>> OnDiskDataMap;
static OnDiskDataMap &getOnDiskDataMap() {
static OnDiskDataMap M;
static bool hasRegisteredAtExit = false;
@@ -132,9 +133,9 @@
// DenseMap.
llvm::MutexGuard Guard(getOnDiskMutex());
OnDiskDataMap &M = getOnDiskDataMap();
- OnDiskData *&D = M[AU];
+ auto &D = M[AU];
if (!D)
- D = new OnDiskData();
+ D = llvm::make_unique<OnDiskData>();
return *D;
}
@@ -150,7 +151,6 @@
OnDiskDataMap::iterator I = M.find(AU);
if (I != M.end()) {
I->second->Cleanup();
- delete I->second;
M.erase(AU);
}
}
@@ -219,8 +219,8 @@
TUKind(TU_Complete), WantTiming(getenv("LIBCLANG_TIMING")),
OwnsRemappedFileBuffers(true),
NumStoredDiagnosticsFromDriver(0),
- PreambleRebuildCounter(0), SavedMainFileBuffer(nullptr),
- PreambleBuffer(nullptr), NumWarningsInPreamble(0),
+ PreambleRebuildCounter(0),
+ NumWarningsInPreamble(0),
ShouldCacheCodeCompletionResults(false),
IncludeBriefCommentsInCodeCompletion(false), UserFilesAreVolatile(false),
CompletionCacheTopLevelHashValue(0),
@@ -251,9 +251,6 @@
for (const auto &RB : PPOpts.RemappedFileBuffers)
delete RB.second;
}
-
- delete SavedMainFileBuffer;
- delete PreambleBuffer;
ClearCachedCompletionResults();
@@ -511,8 +508,8 @@
: PP(PP), Context(Context), LangOpt(LangOpt), TargetOpts(TargetOpts),
Target(Target), Counter(Counter), InitializedLanguage(false) {}
- bool ReadLanguageOptions(const LangOptions &LangOpts,
- bool Complain) override {
+ bool ReadLanguageOptions(const LangOptions &LangOpts, bool Complain,
+ bool AllowCompatibleDifferences) override {
if (InitializedLanguage)
return false;
@@ -592,6 +589,7 @@
DiagnosticsEngine &Diags;
StoredDiagnosticConsumer Client;
DiagnosticConsumer *PreviousClient;
+ std::unique_ptr<DiagnosticConsumer> OwningPreviousClient;
public:
CaptureDroppedDiagnostics(bool RequestCapture, DiagnosticsEngine &Diags,
@@ -599,16 +597,15 @@
: Diags(Diags), Client(StoredDiags), PreviousClient(nullptr)
{
if (RequestCapture || Diags.getClient() == nullptr) {
- PreviousClient = Diags.takeClient();
- Diags.setClient(&Client);
+ OwningPreviousClient = Diags.takeClient();
+ PreviousClient = Diags.getClient();
+ Diags.setClient(&Client, false);
}
}
~CaptureDroppedDiagnostics() {
- if (Diags.getClient() == &Client) {
- Diags.takeClient();
- Diags.setClient(PreviousClient);
- }
+ if (Diags.getClient() == &Client)
+ Diags.setClient(PreviousClient, !!OwningPreviousClient.release());
}
};
@@ -638,38 +635,30 @@
return nullptr;
}
-llvm::MemoryBuffer *ASTUnit::getBufferForFile(StringRef Filename,
- std::string *ErrorStr) {
+std::unique_ptr<llvm::MemoryBuffer>
+ASTUnit::getBufferForFile(StringRef Filename, std::string *ErrorStr) {
assert(FileMgr);
- return FileMgr->getBufferForFile(Filename, ErrorStr);
+ auto Buffer = FileMgr->getBufferForFile(Filename);
+ if (Buffer)
+ return std::move(*Buffer);
+ if (ErrorStr)
+ *ErrorStr = Buffer.getError().message();
+ return nullptr;
}
/// \brief Configure the diagnostics object for use with ASTUnit.
-void ASTUnit::ConfigureDiags(IntrusiveRefCntPtr<DiagnosticsEngine> &Diags,
- const char **ArgBegin, const char **ArgEnd,
+void ASTUnit::ConfigureDiags(IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
ASTUnit &AST, bool CaptureDiagnostics) {
- if (!Diags.get()) {
- // No diagnostics engine was provided, so create our own diagnostics object
- // with the default options.
- DiagnosticConsumer *Client = nullptr;
- if (CaptureDiagnostics)
- Client = new StoredDiagnosticConsumer(AST.StoredDiagnostics);
- Diags = CompilerInstance::createDiagnostics(new DiagnosticOptions(),
- Client,
- /*ShouldOwnClient=*/true);
- } else if (CaptureDiagnostics) {
+ assert(Diags.get() && "no DiagnosticsEngine was provided");
+ if (CaptureDiagnostics)
Diags->setClient(new StoredDiagnosticConsumer(AST.StoredDiagnostics));
- }
}
-ASTUnit *ASTUnit::LoadFromASTFile(const std::string &Filename,
- IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
- const FileSystemOptions &FileSystemOpts,
- bool OnlyLocalDecls,
- ArrayRef<RemappedFile> RemappedFiles,
- bool CaptureDiagnostics,
- bool AllowPCHWithCompilerErrors,
- bool UserFilesAreVolatile) {
+std::unique_ptr<ASTUnit> ASTUnit::LoadFromASTFile(
+ const std::string &Filename, IntrusiveRefCntPtr<DiagnosticsEngine> Diags,
+ const FileSystemOptions &FileSystemOpts, bool OnlyLocalDecls,
+ ArrayRef<RemappedFile> RemappedFiles, bool CaptureDiagnostics,
+ bool AllowPCHWithCompilerErrors, bool UserFilesAreVolatile) {
std::unique_ptr<ASTUnit> AST(new ASTUnit(true));
// Recover resources if we crash before exiting this method.
@@ -679,7 +668,7 @@
llvm::CrashRecoveryContextReleaseRefCleanup<DiagnosticsEngine> >
DiagCleanup(Diags.get());
- ConfigureDiags(Diags, nullptr, nullptr, *AST, CaptureDiagnostics);
+ ConfigureDiags(Diags, *AST, CaptureDiagnostics);
AST->OnlyLocalDecls = OnlyLocalDecls;
AST->CaptureDiagnostics = CaptureDiagnostics;
@@ -705,7 +694,7 @@
// Gather Info for preprocessor construction later on.
- HeaderSearch &HeaderInfo = *AST->HeaderInfo.get();
+ HeaderSearch &HeaderInfo = *AST->HeaderInfo;
unsigned Counter;
AST->PP =
@@ -728,10 +717,9 @@
/*DisableValidation=*/disableValid,
AllowPCHWithCompilerErrors);
- AST->Reader->setListener(new ASTInfoCollector(*AST->PP, Context,
- AST->ASTFileLangOpts,
- AST->TargetOpts, AST->Target,
- Counter));
+ AST->Reader->setListener(llvm::make_unique<ASTInfoCollector>(
+ *AST->PP, Context, AST->ASTFileLangOpts, AST->TargetOpts, AST->Target,
+ Counter));
switch (AST->Reader->ReadAST(Filename, serialization::MK_MainFile,
SourceLocation(), ASTReader::ARR_None)) {
@@ -768,7 +756,7 @@
// Tell the diagnostic client that we have started a source file.
AST->getDiagnostics().getClient()->BeginSourceFile(Context.getLangOpts(),&PP);
- return AST.release();
+ return AST;
}
namespace {
@@ -891,12 +879,13 @@
public:
ASTUnit &Unit;
- ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) override {
+ std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) override {
CI.getPreprocessor().addPPCallbacks(
- new MacroDefinitionTrackerPPCallbacks(Unit.getCurrentTopLevelHashValue()));
- return new TopLevelDeclTrackerConsumer(Unit,
- Unit.getCurrentTopLevelHashValue());
+ llvm::make_unique<MacroDefinitionTrackerPPCallbacks>(
+ Unit.getCurrentTopLevelHashValue()));
+ return llvm::make_unique<TopLevelDeclTrackerConsumer>(
+ Unit, Unit.getCurrentTopLevelHashValue());
}
public:
@@ -916,8 +905,8 @@
explicit PrecompilePreambleAction(ASTUnit &Unit)
: Unit(Unit), HasEmittedPreamblePCH(false) {}
- ASTConsumer *CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) override;
+ std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) override;
bool hasEmittedPreamblePCH() const { return HasEmittedPreamblePCH; }
void setHasEmittedPreamblePCH() { HasEmittedPreamblePCH = true; }
bool shouldEraseOutputFiles() override { return !hasEmittedPreamblePCH(); }
@@ -979,8 +968,9 @@
}
-ASTConsumer *PrecompilePreambleAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
+std::unique_ptr<ASTConsumer>
+PrecompilePreambleAction::CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) {
std::string Sysroot;
std::string OutputFile;
raw_ostream *OS = nullptr;
@@ -991,10 +981,11 @@
if (!CI.getFrontendOpts().RelocatablePCH)
Sysroot.clear();
- CI.getPreprocessor().addPPCallbacks(new MacroDefinitionTrackerPPCallbacks(
- Unit.getCurrentTopLevelHashValue()));
- return new PrecompilePreambleConsumer(Unit, this, CI.getPreprocessor(),
- Sysroot, OS);
+ CI.getPreprocessor().addPPCallbacks(
+ llvm::make_unique<MacroDefinitionTrackerPPCallbacks>(
+ Unit.getCurrentTopLevelHashValue()));
+ return llvm::make_unique<PrecompilePreambleConsumer>(
+ Unit, this, CI.getPreprocessor(), Sysroot, OS);
}
static bool isNonDriverDiag(const StoredDiagnostic &StoredDiag) {
@@ -1031,15 +1022,12 @@
///
/// \returns True if a failure occurred that causes the ASTUnit not to
/// contain any translation-unit information, false otherwise.
-bool ASTUnit::Parse(llvm::MemoryBuffer *OverrideMainBuffer) {
- delete SavedMainFileBuffer;
- SavedMainFileBuffer = nullptr;
+bool ASTUnit::Parse(std::unique_ptr<llvm::MemoryBuffer> OverrideMainBuffer) {
+ SavedMainFileBuffer.reset();
- if (!Invocation) {
- delete OverrideMainBuffer;
+ if (!Invocation)
return true;
- }
-
+
// Create the compiler instance to use for building the AST.
std::unique_ptr<CompilerInstance> Clang(new CompilerInstance());
@@ -1060,10 +1048,8 @@
// Create the target instance.
Clang->setTarget(TargetInfo::CreateTargetInfo(
Clang->getDiagnostics(), Clang->getInvocation().TargetOpts));
- if (!Clang->hasTarget()) {
- delete OverrideMainBuffer;
+ if (!Clang->hasTarget())
return true;
- }
// Inform the target of the language options.
//
@@ -1083,10 +1069,8 @@
FileSystemOpts = Clang->getFileSystemOpts();
IntrusiveRefCntPtr<vfs::FileSystem> VFS =
createVFSFromCompilerInvocation(Clang->getInvocation(), getDiagnostics());
- if (!VFS) {
- delete OverrideMainBuffer;
+ if (!VFS)
return true;
- }
FileMgr = new FileManager(FileSystemOpts, VFS);
SourceMgr = new SourceManager(getDiagnostics(), *FileMgr,
UserFilesAreVolatile);
@@ -1115,7 +1099,8 @@
// make that override happen and introduce the preamble.
PreprocessorOptions &PreprocessorOpts = Clang->getPreprocessorOpts();
if (OverrideMainBuffer) {
- PreprocessorOpts.addRemappedFile(OriginalSourceFile, OverrideMainBuffer);
+ PreprocessorOpts.addRemappedFile(OriginalSourceFile,
+ OverrideMainBuffer.get());
PreprocessorOpts.PrecompiledPreambleBytes.first = Preamble.size();
PreprocessorOpts.PrecompiledPreambleBytes.second
= PreambleEndsAtStartOfLine;
@@ -1130,7 +1115,7 @@
checkAndSanitizeDiags(StoredDiagnostics, getSourceManager());
// Keep track of the override buffer;
- SavedMainFileBuffer = OverrideMainBuffer;
+ SavedMainFileBuffer = std::move(OverrideMainBuffer);
}
std::unique_ptr<TopLevelDeclTrackerAction> Act(
@@ -1143,7 +1128,7 @@
if (!Act->BeginSourceFile(*Clang.get(), Clang->getFrontendOpts().Inputs[0]))
goto error;
- if (OverrideMainBuffer) {
+ if (SavedMainFileBuffer) {
std::string ModName = getPreambleFile(this);
TranslateStoredDiagnostics(getFileManager(), getSourceManager(),
PreambleDiagnostics, StoredDiagnostics);
@@ -1162,10 +1147,7 @@
error:
// Remove the overridden buffer we used for the preamble.
- if (OverrideMainBuffer) {
- delete OverrideMainBuffer;
- SavedMainFileBuffer = nullptr;
- }
+ SavedMainFileBuffer = nullptr;
// Keep the ownership of the data in the ASTUnit because the client may
// want to see the diagnostics.
@@ -1194,17 +1176,16 @@
/// \brief Compute the preamble for the main file, providing the source buffer
/// that corresponds to the main file along with a pair (bytes, start-of-line)
/// that describes the preamble.
-std::pair<llvm::MemoryBuffer *, std::pair<unsigned, bool> >
-ASTUnit::ComputePreamble(CompilerInvocation &Invocation,
- unsigned MaxLines, bool &CreatedBuffer) {
+ASTUnit::ComputedPreamble
+ASTUnit::ComputePreamble(CompilerInvocation &Invocation, unsigned MaxLines) {
FrontendOptions &FrontendOpts = Invocation.getFrontendOpts();
PreprocessorOptions &PreprocessorOpts = Invocation.getPreprocessorOpts();
- CreatedBuffer = false;
// Try to determine if the main file has been remapped, either from the
// command line (to another file) or directly through the compiler invocation
// (to a memory buffer).
llvm::MemoryBuffer *Buffer = nullptr;
+ std::unique_ptr<llvm::MemoryBuffer> BufferOwner;
std::string MainFilePath(FrontendOpts.Inputs[0].getFile());
llvm::sys::fs::UniqueID MainFileID;
if (!llvm::sys::fs::getUniqueID(MainFilePath, MainFileID)) {
@@ -1215,15 +1196,9 @@
if (!llvm::sys::fs::getUniqueID(MPath, MID)) {
if (MainFileID == MID) {
// We found a remapping. Try to load the resulting, remapped source.
- if (CreatedBuffer) {
- delete Buffer;
- CreatedBuffer = false;
- }
-
- Buffer = getBufferForFile(RF.second);
- if (!Buffer)
- return std::make_pair(nullptr, std::make_pair(0, true));
- CreatedBuffer = true;
+ BufferOwner = getBufferForFile(RF.second);
+ if (!BufferOwner)
+ return ComputedPreamble(nullptr, nullptr, 0, true);
}
}
}
@@ -1236,11 +1211,7 @@
if (!llvm::sys::fs::getUniqueID(MPath, MID)) {
if (MainFileID == MID) {
// We found a remapping.
- if (CreatedBuffer) {
- delete Buffer;
- CreatedBuffer = false;
- }
-
+ BufferOwner.reset();
Buffer = const_cast<llvm::MemoryBuffer *>(RB.second);
}
}
@@ -1248,17 +1219,18 @@
}
// If the main source file was not remapped, load it now.
- if (!Buffer) {
- Buffer = getBufferForFile(FrontendOpts.Inputs[0].getFile());
- if (!Buffer)
- return std::make_pair(nullptr, std::make_pair(0, true));
-
- CreatedBuffer = true;
+ if (!Buffer && !BufferOwner) {
+ BufferOwner = getBufferForFile(FrontendOpts.Inputs[0].getFile());
+ if (!BufferOwner)
+ return ComputedPreamble(nullptr, nullptr, 0, true);
}
-
- return std::make_pair(Buffer, Lexer::ComputePreamble(Buffer,
- *Invocation.getLangOpts(),
- MaxLines));
+
+ if (!Buffer)
+ Buffer = BufferOwner.get();
+ auto Pre = Lexer::ComputePreamble(Buffer->getBuffer(),
+ *Invocation.getLangOpts(), MaxLines);
+ return ComputedPreamble(Buffer, std::move(BufferOwner), Pre.first,
+ Pre.second);
}
ASTUnit::PreambleFileHash
@@ -1300,42 +1272,44 @@
return std::make_pair(Offset, EndOffset);
}
-static void makeStandaloneFixIt(const SourceManager &SM,
- const LangOptions &LangOpts,
- const FixItHint &InFix,
- ASTUnit::StandaloneFixIt &OutFix) {
+static ASTUnit::StandaloneFixIt makeStandaloneFixIt(const SourceManager &SM,
+ const LangOptions &LangOpts,
+ const FixItHint &InFix) {
+ ASTUnit::StandaloneFixIt OutFix;
OutFix.RemoveRange = makeStandaloneRange(InFix.RemoveRange, SM, LangOpts);
OutFix.InsertFromRange = makeStandaloneRange(InFix.InsertFromRange, SM,
LangOpts);
OutFix.CodeToInsert = InFix.CodeToInsert;
OutFix.BeforePreviousInsertions = InFix.BeforePreviousInsertions;
+ return OutFix;
}
-static void makeStandaloneDiagnostic(const LangOptions &LangOpts,
- const StoredDiagnostic &InDiag,
- ASTUnit::StandaloneDiagnostic &OutDiag) {
+static ASTUnit::StandaloneDiagnostic
+makeStandaloneDiagnostic(const LangOptions &LangOpts,
+ const StoredDiagnostic &InDiag) {
+ ASTUnit::StandaloneDiagnostic OutDiag;
OutDiag.ID = InDiag.getID();
OutDiag.Level = InDiag.getLevel();
OutDiag.Message = InDiag.getMessage();
OutDiag.LocOffset = 0;
if (InDiag.getLocation().isInvalid())
- return;
+ return OutDiag;
const SourceManager &SM = InDiag.getLocation().getManager();
SourceLocation FileLoc = SM.getFileLoc(InDiag.getLocation());
OutDiag.Filename = SM.getFilename(FileLoc);
if (OutDiag.Filename.empty())
- return;
+ return OutDiag;
OutDiag.LocOffset = SM.getFileOffset(FileLoc);
for (StoredDiagnostic::range_iterator
I = InDiag.range_begin(), E = InDiag.range_end(); I != E; ++I) {
OutDiag.Ranges.push_back(makeStandaloneRange(*I, SM, LangOpts));
}
- for (StoredDiagnostic::fixit_iterator
- I = InDiag.fixit_begin(), E = InDiag.fixit_end(); I != E; ++I) {
- ASTUnit::StandaloneFixIt Fix;
- makeStandaloneFixIt(SM, LangOpts, *I, Fix);
- OutDiag.FixIts.push_back(Fix);
- }
+ for (StoredDiagnostic::fixit_iterator I = InDiag.fixit_begin(),
+ E = InDiag.fixit_end();
+ I != E; ++I)
+ OutDiag.FixIts.push_back(makeStandaloneFixIt(SM, LangOpts, *I));
+
+ return OutDiag;
}
/// \brief Attempt to build or re-use a precompiled preamble when (re-)parsing
@@ -1358,27 +1332,20 @@
/// \returns If the precompiled preamble can be used, returns a newly-allocated
/// buffer that should be used in place of the main file when doing so.
/// Otherwise, returns a NULL pointer.
-llvm::MemoryBuffer *ASTUnit::getMainBufferWithPrecompiledPreamble(
- const CompilerInvocation &PreambleInvocationIn,
- bool AllowRebuild,
- unsigned MaxLines) {
-
+std::unique_ptr<llvm::MemoryBuffer>
+ASTUnit::getMainBufferWithPrecompiledPreamble(
+ const CompilerInvocation &PreambleInvocationIn, bool AllowRebuild,
+ unsigned MaxLines) {
+
IntrusiveRefCntPtr<CompilerInvocation>
PreambleInvocation(new CompilerInvocation(PreambleInvocationIn));
FrontendOptions &FrontendOpts = PreambleInvocation->getFrontendOpts();
PreprocessorOptions &PreprocessorOpts
= PreambleInvocation->getPreprocessorOpts();
- bool CreatedPreambleBuffer = false;
- std::pair<llvm::MemoryBuffer *, std::pair<unsigned, bool> > NewPreamble
- = ComputePreamble(*PreambleInvocation, MaxLines, CreatedPreambleBuffer);
+ ComputedPreamble NewPreamble = ComputePreamble(*PreambleInvocation, MaxLines);
- // If ComputePreamble() Take ownership of the preamble buffer.
- std::unique_ptr<llvm::MemoryBuffer> OwnedPreambleBuffer;
- if (CreatedPreambleBuffer)
- OwnedPreambleBuffer.reset(NewPreamble.first);
-
- if (!NewPreamble.second.first) {
+ if (!NewPreamble.Size) {
// We couldn't find a preamble in the main source. Clear out the current
// preamble, if we have one. It's obviously no good any more.
Preamble.clear();
@@ -1394,10 +1361,10 @@
// preamble now that we did before, and that there's enough space in
// the main-file buffer within the precompiled preamble to fit the
// new main file.
- if (Preamble.size() == NewPreamble.second.first &&
- PreambleEndsAtStartOfLine == NewPreamble.second.second &&
- memcmp(Preamble.getBufferStart(), NewPreamble.first->getBufferStart(),
- NewPreamble.second.first) == 0) {
+ if (Preamble.size() == NewPreamble.Size &&
+ PreambleEndsAtStartOfLine == NewPreamble.PreambleEndsAtStartOfLine &&
+ memcmp(Preamble.getBufferStart(), NewPreamble.Buffer->getBufferStart(),
+ NewPreamble.Size) == 0) {
// The preamble has not changed. We may be able to re-use the precompiled
// preamble.
@@ -1467,7 +1434,7 @@
getDiagnostics().setNumWarnings(NumWarningsInPreamble);
return llvm::MemoryBuffer::getMemBufferCopy(
- NewPreamble.first->getBuffer(), FrontendOpts.Inputs[0].getFile());
+ NewPreamble.Buffer->getBuffer(), FrontendOpts.Inputs[0].getFile());
}
}
@@ -1512,19 +1479,16 @@
// subsequent reparses.
StringRef MainFilename = FrontendOpts.Inputs[0].getFile();
Preamble.assign(FileMgr->getFile(MainFilename),
- NewPreamble.first->getBufferStart(),
- NewPreamble.first->getBufferStart()
- + NewPreamble.second.first);
- PreambleEndsAtStartOfLine = NewPreamble.second.second;
+ NewPreamble.Buffer->getBufferStart(),
+ NewPreamble.Buffer->getBufferStart() + NewPreamble.Size);
+ PreambleEndsAtStartOfLine = NewPreamble.PreambleEndsAtStartOfLine;
- delete PreambleBuffer;
- PreambleBuffer
- = llvm::MemoryBuffer::getMemBufferCopy(
- NewPreamble.first->getBuffer().slice(0, Preamble.size()), MainFilename);
+ PreambleBuffer = llvm::MemoryBuffer::getMemBufferCopy(
+ NewPreamble.Buffer->getBuffer().slice(0, Preamble.size()), MainFilename);
// Remap the main source file to the preamble buffer.
StringRef MainFilePath = FrontendOpts.Inputs[0].getFile();
- PreprocessorOpts.addRemappedFile(MainFilePath, PreambleBuffer);
+ PreprocessorOpts.addRemappedFile(MainFilePath, PreambleBuffer.get());
// Tell the compiler invocation to generate a temporary precompiled header.
FrontendOpts.ProgramAction = frontend::GeneratePCH;
@@ -1607,13 +1571,11 @@
// Transfer any diagnostics generated when parsing the preamble into the set
// of preamble diagnostics.
- for (stored_diag_iterator
- I = stored_diag_afterDriver_begin(),
- E = stored_diag_end(); I != E; ++I) {
- StandaloneDiagnostic Diag;
- makeStandaloneDiagnostic(Clang->getLangOpts(), *I, Diag);
- PreambleDiagnostics.push_back(Diag);
- }
+ for (stored_diag_iterator I = stored_diag_afterDriver_begin(),
+ E = stored_diag_end();
+ I != E; ++I)
+ PreambleDiagnostics.push_back(
+ makeStandaloneDiagnostic(Clang->getLangOpts(), *I));
Act->EndSourceFile();
@@ -1663,8 +1625,8 @@
CompletionCacheTopLevelHashValue = 0;
PreambleTopLevelHashValue = CurrentTopLevelHashValue;
}
-
- return llvm::MemoryBuffer::getMemBufferCopy(NewPreamble.first->getBuffer(),
+
+ return llvm::MemoryBuffer::getMemBufferCopy(NewPreamble.Buffer->getBuffer(),
MainFilename);
}
@@ -1688,8 +1650,8 @@
// created.
assert(CI.hasInvocation() && "missing invocation");
LangOpts = CI.getInvocation().LangOpts;
- TheSema.reset(CI.takeSema());
- Consumer.reset(CI.takeASTConsumer());
+ TheSema = CI.takeSema();
+ Consumer = CI.takeASTConsumer();
if (CI.hasASTContext())
Ctx = &CI.getASTContext();
if (CI.hasPreprocessor())
@@ -1735,7 +1697,7 @@
bool UserFilesAreVolatile) {
std::unique_ptr<ASTUnit> AST;
AST.reset(new ASTUnit(false));
- ConfigureDiags(Diags, nullptr, nullptr, *AST, CaptureDiagnostics);
+ ConfigureDiags(Diags, *AST, CaptureDiagnostics);
AST->Diagnostics = Diags;
AST->Invocation = CI;
AST->FileSystemOpts = CI->getFileSystemOpts();
@@ -1862,13 +1824,15 @@
if (Persistent && !TrackerAct) {
Clang->getPreprocessor().addPPCallbacks(
- new MacroDefinitionTrackerPPCallbacks(AST->getCurrentTopLevelHashValue()));
- std::vector<ASTConsumer*> Consumers;
+ llvm::make_unique<MacroDefinitionTrackerPPCallbacks>(
+ AST->getCurrentTopLevelHashValue()));
+ std::vector<std::unique_ptr<ASTConsumer>> Consumers;
if (Clang->hasASTConsumer())
Consumers.push_back(Clang->takeASTConsumer());
- Consumers.push_back(new TopLevelDeclTrackerConsumer(*AST,
- AST->getCurrentTopLevelHashValue()));
- Clang->setASTConsumer(new MultiplexConsumer(Consumers));
+ Consumers.push_back(llvm::make_unique<TopLevelDeclTrackerConsumer>(
+ *AST, AST->getCurrentTopLevelHashValue()));
+ Clang->setASTConsumer(
+ llvm::make_unique<MultiplexConsumer>(std::move(Consumers)));
}
if (!Act->Execute()) {
AST->transferASTDataFromCompilerInstance(*Clang);
@@ -1898,11 +1862,10 @@
Invocation->getFrontendOpts().DisableFree = false;
ProcessWarningOptions(getDiagnostics(), Invocation->getDiagnosticOpts());
- llvm::MemoryBuffer *OverrideMainBuffer = nullptr;
+ std::unique_ptr<llvm::MemoryBuffer> OverrideMainBuffer;
if (PrecompilePreamble) {
PreambleRebuildCounter = 2;
- OverrideMainBuffer
- = getMainBufferWithPrecompiledPreamble(*Invocation);
+ OverrideMainBuffer = getMainBufferWithPrecompiledPreamble(*Invocation);
}
SimpleTimer ParsingTimer(WantTiming);
@@ -1910,9 +1873,9 @@
// Recover resources if we crash before exiting this method.
llvm::CrashRecoveryContextCleanupRegistrar<llvm::MemoryBuffer>
- MemBufferCleanup(OverrideMainBuffer);
-
- return Parse(OverrideMainBuffer);
+ MemBufferCleanup(OverrideMainBuffer.get());
+
+ return Parse(std::move(OverrideMainBuffer));
}
std::unique_ptr<ASTUnit> ASTUnit::LoadFromCompilerInvocation(
@@ -1922,7 +1885,7 @@
bool IncludeBriefCommentsInCodeCompletion, bool UserFilesAreVolatile) {
// Create the AST unit.
std::unique_ptr<ASTUnit> AST(new ASTUnit(false));
- ConfigureDiags(Diags, nullptr, nullptr, *AST, CaptureDiagnostics);
+ ConfigureDiags(Diags, *AST, CaptureDiagnostics);
AST->Diagnostics = Diags;
AST->OnlyLocalDecls = OnlyLocalDecls;
AST->CaptureDiagnostics = CaptureDiagnostics;
@@ -1961,11 +1924,7 @@
bool AllowPCHWithCompilerErrors, bool SkipFunctionBodies,
bool UserFilesAreVolatile, bool ForSerialization,
std::unique_ptr<ASTUnit> *ErrAST) {
- if (!Diags.get()) {
- // No diagnostics engine was provided, so create our own diagnostics object
- // with the default options.
- Diags = CompilerInstance::createDiagnostics(new DiagnosticOptions());
- }
+ assert(Diags.get() && "no DiagnosticsEngine was provided");
SmallVector<StoredDiagnostic, 4> StoredDiagnostics;
@@ -2000,9 +1959,8 @@
// Create the AST unit.
std::unique_ptr<ASTUnit> AST;
AST.reset(new ASTUnit(false));
- ConfigureDiags(Diags, ArgBegin, ArgEnd, *AST, CaptureDiagnostics);
+ ConfigureDiags(Diags, *AST, CaptureDiagnostics);
AST->Diagnostics = Diags;
- Diags = nullptr; // Zero out now to ease cleanup during crash recovery.
AST->FileSystemOpts = CI->getFileSystemOpts();
IntrusiveRefCntPtr<vfs::FileSystem> VFS =
createVFSFromCompilerInvocation(*CI, *Diags);
@@ -2021,7 +1979,9 @@
AST->Invocation = CI;
if (ForSerialization)
AST->WriterData.reset(new ASTWriterData());
- CI = nullptr; // Zero out now to ease cleanup during crash recovery.
+ // Zero out now to ease cleanup during crash recovery.
+ CI = nullptr;
+ Diags = nullptr;
// Recover resources if we crash before exiting this method.
llvm::CrashRecoveryContextCleanupRegistrar<ASTUnit>
@@ -2062,7 +2022,7 @@
// If we have a preamble file lying around, or if we might try to
// build a precompiled preamble, do so now.
- llvm::MemoryBuffer *OverrideMainBuffer = nullptr;
+ std::unique_ptr<llvm::MemoryBuffer> OverrideMainBuffer;
if (!getPreambleFile(this).empty() || PreambleRebuildCounter > 0)
OverrideMainBuffer = getMainBufferWithPrecompiledPreamble(*Invocation);
@@ -2073,8 +2033,8 @@
getDiagnostics().setNumWarnings(NumWarningsInPreamble);
// Parse the sources
- bool Result = Parse(OverrideMainBuffer);
-
+ bool Result = Parse(std::move(OverrideMainBuffer));
+
// If we're caching global code-completion results, and the top-level
// declarations have changed, clear out the code-completion cache.
if (!Result && ShouldCacheCodeCompletionResults &&
@@ -2366,6 +2326,10 @@
// Set the language options appropriately.
LangOpts = *CCInvocation->getLangOpts();
+ // Spell-checking and warnings are wasteful during code-completion.
+ LangOpts.SpellChecking = false;
+ CCInvocation->getDiagnosticOpts().IgnoreWarnings = true;
+
std::unique_ptr<CompilerInstance> Clang(new CompilerInstance());
// Recover resources if we crash before exiting this method.
@@ -2427,7 +2391,7 @@
// the use of the precompiled preamble if we're if the completion
// point is within the main file, after the end of the precompiled
// preamble.
- llvm::MemoryBuffer *OverrideMainBuffer = nullptr;
+ std::unique_ptr<llvm::MemoryBuffer> OverrideMainBuffer;
if (!getPreambleFile(this).empty()) {
std::string CompleteFilePath(File);
llvm::sys::fs::UniqueID CompleteFileID;
@@ -2437,9 +2401,8 @@
llvm::sys::fs::UniqueID MainID;
if (!llvm::sys::fs::getUniqueID(MainPath, MainID)) {
if (CompleteFileID == MainID && Line > 1)
- OverrideMainBuffer
- = getMainBufferWithPrecompiledPreamble(*CCInvocation, false,
- Line - 1);
+ OverrideMainBuffer = getMainBufferWithPrecompiledPreamble(
+ *CCInvocation, false, Line - 1);
}
}
}
@@ -2447,14 +2410,15 @@
// If the main file has been overridden due to the use of a preamble,
// make that override happen and introduce the preamble.
if (OverrideMainBuffer) {
- PreprocessorOpts.addRemappedFile(OriginalSourceFile, OverrideMainBuffer);
+ PreprocessorOpts.addRemappedFile(OriginalSourceFile,
+ OverrideMainBuffer.get());
PreprocessorOpts.PrecompiledPreambleBytes.first = Preamble.size();
PreprocessorOpts.PrecompiledPreambleBytes.second
= PreambleEndsAtStartOfLine;
PreprocessorOpts.ImplicitPCHInclude = getPreambleFile(this);
PreprocessorOpts.DisablePCHValidation = true;
-
- OwnedBuffers.push_back(OverrideMainBuffer);
+
+ OwnedBuffers.push_back(OverrideMainBuffer.release());
} else {
PreprocessorOpts.PrecompiledPreambleBytes.first = 0;
PreprocessorOpts.PrecompiledPreambleBytes.second = false;
@@ -2821,7 +2785,8 @@
static bool PCHLocator(serialization::ModuleFile &M, void *UserData) {
PCHLocatorInfo &Info = *static_cast<PCHLocatorInfo*>(UserData);
switch (M.Kind) {
- case serialization::MK_Module:
+ case serialization::MK_ImplicitModule:
+ case serialization::MK_ExplicitModule:
return true; // skip dependencies.
case serialization::MK_PCH:
Info.Mod = &M;
diff --git a/lib/Frontend/Android.mk b/lib/Frontend/Android.mk
index 255da76..7e08621 100644
--- a/lib/Frontend/Android.mk
+++ b/lib/Frontend/Android.mk
@@ -26,6 +26,7 @@
CacheTokens.cpp \
ChainedDiagnosticConsumer.cpp \
ChainedIncludesSource.cpp \
+ CodeGenOptions.cpp \
CompilerInstance.cpp \
CompilerInvocation.cpp \
CreateInvocationFromCommandLine.cpp \
@@ -45,8 +46,9 @@
MultiplexConsumer.cpp \
PrintPreprocessedOutput.cpp \
SerializedDiagnosticPrinter.cpp \
- TextDiagnostic.cpp \
+ SerializedDiagnosticReader.cpp \
TextDiagnosticBuffer.cpp \
+ TextDiagnostic.cpp \
TextDiagnosticPrinter.cpp \
VerifyDiagnosticConsumer.cpp
diff --git a/lib/Frontend/CMakeLists.txt b/lib/Frontend/CMakeLists.txt
index 3fa7a2c..7c5fca5 100644
--- a/lib/Frontend/CMakeLists.txt
+++ b/lib/Frontend/CMakeLists.txt
@@ -1,4 +1,7 @@
+add_subdirectory(Rewrite)
+
set(LLVM_LINK_COMPONENTS
+ BitReader
Option
Support
)
@@ -10,6 +13,7 @@
CacheTokens.cpp
ChainedDiagnosticConsumer.cpp
ChainedIncludesSource.cpp
+ CodeGenOptions.cpp
CompilerInstance.cpp
CompilerInvocation.cpp
CreateInvocationFromCommandLine.cpp
@@ -29,6 +33,7 @@
MultiplexConsumer.cpp
PrintPreprocessedOutput.cpp
SerializedDiagnosticPrinter.cpp
+ SerializedDiagnosticReader.cpp
TextDiagnostic.cpp
TextDiagnosticBuffer.cpp
TextDiagnosticPrinter.cpp
diff --git a/lib/Frontend/CacheTokens.cpp b/lib/Frontend/CacheTokens.cpp
index 14f7027..d909d52 100644
--- a/lib/Frontend/CacheTokens.cpp
+++ b/lib/Frontend/CacheTokens.cpp
@@ -270,17 +270,17 @@
StringRef s(T.getLiteralData(), T.getLength());
// Get the string entry.
- llvm::StringMapEntry<OffsetOpt> *E = &CachedStrs.GetOrCreateValue(s);
+ auto &E = *CachedStrs.insert(std::make_pair(s, OffsetOpt())).first;
// If this is a new string entry, bump the PTH offset.
- if (!E->getValue().hasOffset()) {
- E->getValue().setOffset(CurStrOffset);
- StrEntries.push_back(E);
+ if (!E.second.hasOffset()) {
+ E.second.setOffset(CurStrOffset);
+ StrEntries.push_back(&E);
CurStrOffset += s.size() + 1;
}
// Emit the relative offset into the PTH file for the spelling string.
- Emit32(E->getValue().getOffset());
+ Emit32(E.second.getOffset());
}
// Emit the offset into the original source file of this token so that we
@@ -572,8 +572,10 @@
PTHWriter PW(*OS, PP);
// Install the 'stat' system call listener in the FileManager.
- StatListener *StatCache = new StatListener(PW.getPM());
- PP.getFileManager().addStatCache(StatCache, /*AtBeginning=*/true);
+ auto StatCacheOwner = llvm::make_unique<StatListener>(PW.getPM());
+ StatListener *StatCache = StatCacheOwner.get();
+ PP.getFileManager().addStatCache(std::move(StatCacheOwner),
+ /*AtBeginning=*/true);
// Lex through the entire file. This will populate SourceManager with
// all of the header information.
diff --git a/lib/Frontend/ChainedIncludesSource.cpp b/lib/Frontend/ChainedIncludesSource.cpp
index e6e73ac..cb260b4 100644
--- a/lib/Frontend/ChainedIncludesSource.cpp
+++ b/lib/Frontend/ChainedIncludesSource.cpp
@@ -74,7 +74,7 @@
static ASTReader *
createASTReader(CompilerInstance &CI, StringRef pchFile,
- SmallVectorImpl<llvm::MemoryBuffer *> &memBufs,
+ SmallVectorImpl<std::unique_ptr<llvm::MemoryBuffer>> &MemBufs,
SmallVectorImpl<std::string> &bufNames,
ASTDeserializationListener *deserialListener = nullptr) {
Preprocessor &PP = CI.getPreprocessor();
@@ -83,7 +83,7 @@
/*DisableValidation=*/true));
for (unsigned ti = 0; ti < bufNames.size(); ++ti) {
StringRef sr(bufNames[ti]);
- Reader->addInMemoryBuffer(sr, memBufs[ti]);
+ Reader->addInMemoryBuffer(sr, std::move(MemBufs[ti]));
}
Reader->setDeserializationListener(deserialListener);
switch (Reader->ReadAST(pchFile, serialization::MK_PCH, SourceLocation(),
@@ -118,7 +118,7 @@
IntrusiveRefCntPtr<ChainedIncludesSource> source(new ChainedIncludesSource());
InputKind IK = CI.getFrontendOpts().Inputs[0].getKind();
- SmallVector<llvm::MemoryBuffer *, 4> serialBufs;
+ SmallVector<std::unique_ptr<llvm::MemoryBuffer>, 4> SerialBufs;
SmallVector<std::string, 4> serialBufNames;
for (unsigned i = 0, e = includes.size(); i != e; ++i) {
@@ -158,12 +158,12 @@
SmallVector<char, 256> serialAST;
llvm::raw_svector_ostream OS(serialAST);
- std::unique_ptr<ASTConsumer> consumer;
- consumer.reset(new PCHGenerator(Clang->getPreprocessor(), "-", nullptr,
- /*isysroot=*/"", &OS));
+ auto consumer =
+ llvm::make_unique<PCHGenerator>(Clang->getPreprocessor(), "-", nullptr,
+ /*isysroot=*/"", &OS);
Clang->getASTContext().setASTMutationListener(
consumer->GetASTMutationListener());
- Clang->setASTConsumer(consumer.release());
+ Clang->setASTConsumer(std::move(consumer));
Clang->createSema(TU_Prefix, nullptr);
if (firstInclude) {
@@ -171,20 +171,21 @@
PP.getBuiltinInfo().InitializeBuiltins(PP.getIdentifierTable(),
PP.getLangOpts());
} else {
- assert(!serialBufs.empty());
- SmallVector<llvm::MemoryBuffer *, 4> bufs;
+ assert(!SerialBufs.empty());
+ SmallVector<std::unique_ptr<llvm::MemoryBuffer>, 4> Bufs;
// TODO: Pass through the existing MemoryBuffer instances instead of
// allocating new ones.
- for (auto *SB : serialBufs)
- bufs.push_back(llvm::MemoryBuffer::getMemBuffer(SB->getBuffer()));
+ for (auto &SB : SerialBufs)
+ Bufs.push_back(llvm::MemoryBuffer::getMemBuffer(SB->getBuffer()));
std::string pchName = includes[i-1];
llvm::raw_string_ostream os(pchName);
os << ".pch" << i-1;
serialBufNames.push_back(os.str());
IntrusiveRefCntPtr<ASTReader> Reader;
- Reader = createASTReader(*Clang, pchName, bufs, serialBufNames,
- Clang->getASTConsumer().GetASTDeserializationListener());
+ Reader = createASTReader(
+ *Clang, pchName, Bufs, serialBufNames,
+ Clang->getASTConsumer().GetASTDeserializationListener());
if (!Reader)
return nullptr;
Clang->setModuleManager(Reader);
@@ -196,14 +197,14 @@
ParseAST(Clang->getSema());
Clang->getDiagnosticClient().EndSourceFile();
- serialBufs.push_back(llvm::MemoryBuffer::getMemBufferCopy(OS.str()));
+ SerialBufs.push_back(llvm::MemoryBuffer::getMemBufferCopy(OS.str()));
source->CIs.push_back(Clang.release());
}
- assert(!serialBufs.empty());
+ assert(!SerialBufs.empty());
std::string pchName = includes.back() + ".pch-final";
serialBufNames.push_back(pchName);
- Reader = createASTReader(CI, pchName, serialBufs, serialBufNames);
+ Reader = createASTReader(CI, pchName, SerialBufs, serialBufNames);
if (!Reader)
return nullptr;
diff --git a/lib/Frontend/CodeGenOptions.cpp b/lib/Frontend/CodeGenOptions.cpp
new file mode 100644
index 0000000..4fa28b4
--- /dev/null
+++ b/lib/Frontend/CodeGenOptions.cpp
@@ -0,0 +1,24 @@
+//===--- CodeGenOptions.cpp -----------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include <string.h>
+#include "clang/Frontend/CodeGenOptions.h"
+
+namespace clang {
+
+CodeGenOptions::CodeGenOptions() {
+#define CODEGENOPT(Name, Bits, Default) Name = Default;
+#define ENUM_CODEGENOPT(Name, Type, Bits, Default) set##Name(Default);
+#include "clang/Frontend/CodeGenOptions.def"
+
+ RelocationModel = "pic";
+ memcpy(CoverageVersion, "402*", 4);
+}
+
+} // end namespace clang
diff --git a/lib/Frontend/CompilerInstance.cpp b/lib/Frontend/CompilerInstance.cpp
index 7cea9e4..b059965 100644
--- a/lib/Frontend/CompilerInstance.cpp
+++ b/lib/Frontend/CompilerInstance.cpp
@@ -101,14 +101,18 @@
TheSema.reset(S);
}
-void CompilerInstance::setASTConsumer(ASTConsumer *Value) {
- Consumer.reset(Value);
+void CompilerInstance::setASTConsumer(std::unique_ptr<ASTConsumer> Value) {
+ Consumer = std::move(Value);
}
void CompilerInstance::setCodeCompletionConsumer(CodeCompleteConsumer *Value) {
CompletionConsumer.reset(Value);
}
-
+
+std::unique_ptr<Sema> CompilerInstance::takeSema() {
+ return std::move(TheSema);
+}
+
IntrusiveRefCntPtr<ASTReader> CompilerInstance::getModuleManager() const {
return ModuleManager;
}
@@ -130,52 +134,48 @@
static void SetUpDiagnosticLog(DiagnosticOptions *DiagOpts,
const CodeGenOptions *CodeGenOpts,
DiagnosticsEngine &Diags) {
- std::string ErrorInfo;
- bool OwnsStream = false;
+ std::error_code EC;
+ std::unique_ptr<raw_ostream> StreamOwner;
raw_ostream *OS = &llvm::errs();
if (DiagOpts->DiagnosticLogFile != "-") {
// Create the output stream.
- llvm::raw_fd_ostream *FileOS(new llvm::raw_fd_ostream(
- DiagOpts->DiagnosticLogFile.c_str(), ErrorInfo,
- llvm::sys::fs::F_Append | llvm::sys::fs::F_Text));
- if (!ErrorInfo.empty()) {
+ auto FileOS = llvm::make_unique<llvm::raw_fd_ostream>(
+ DiagOpts->DiagnosticLogFile, EC,
+ llvm::sys::fs::F_Append | llvm::sys::fs::F_Text);
+ if (EC) {
Diags.Report(diag::warn_fe_cc_log_diagnostics_failure)
- << DiagOpts->DiagnosticLogFile << ErrorInfo;
+ << DiagOpts->DiagnosticLogFile << EC.message();
} else {
FileOS->SetUnbuffered();
FileOS->SetUseAtomicWrites(true);
- OS = FileOS;
- OwnsStream = true;
+ OS = FileOS.get();
+ StreamOwner = std::move(FileOS);
}
}
// Chain in the diagnostic client which will log the diagnostics.
- LogDiagnosticPrinter *Logger = new LogDiagnosticPrinter(*OS, DiagOpts,
- OwnsStream);
+ auto Logger = llvm::make_unique<LogDiagnosticPrinter>(*OS, DiagOpts,
+ std::move(StreamOwner));
if (CodeGenOpts)
Logger->setDwarfDebugFlags(CodeGenOpts->DwarfDebugFlags);
- Diags.setClient(new ChainedDiagnosticConsumer(Diags.takeClient(), Logger));
+ assert(Diags.ownsClient());
+ Diags.setClient(
+ new ChainedDiagnosticConsumer(Diags.takeClient(), std::move(Logger)));
}
static void SetupSerializedDiagnostics(DiagnosticOptions *DiagOpts,
DiagnosticsEngine &Diags,
StringRef OutputFile) {
- std::string ErrorInfo;
- std::unique_ptr<llvm::raw_fd_ostream> OS;
- OS.reset(new llvm::raw_fd_ostream(OutputFile.str().c_str(), ErrorInfo,
- llvm::sys::fs::F_None));
+ auto SerializedConsumer =
+ clang::serialized_diags::create(OutputFile, DiagOpts);
- if (!ErrorInfo.empty()) {
- Diags.Report(diag::warn_fe_serialized_diag_failure)
- << OutputFile << ErrorInfo;
- return;
+ if (Diags.ownsClient()) {
+ Diags.setClient(new ChainedDiagnosticConsumer(
+ Diags.takeClient(), std::move(SerializedConsumer)));
+ } else {
+ Diags.setClient(new ChainedDiagnosticConsumer(
+ Diags.getClient(), std::move(SerializedConsumer)));
}
-
- DiagnosticConsumer *SerializedConsumer =
- clang::serialized_diags::create(OS.release(), DiagOpts);
-
- Diags.setClient(new ChainedDiagnosticConsumer(Diags.takeClient(),
- SerializedConsumer));
}
void CompilerInstance::createDiagnostics(DiagnosticConsumer *Client,
@@ -569,17 +569,14 @@
StringRef Extension,
bool UseTemporary,
bool CreateMissingDirectories) {
- std::string Error, OutputPathName, TempPathName;
- llvm::raw_fd_ostream *OS = createOutputFile(OutputPath, Error, Binary,
- RemoveFileOnSignal,
- InFile, Extension,
- UseTemporary,
- CreateMissingDirectories,
- &OutputPathName,
- &TempPathName);
+ std::string OutputPathName, TempPathName;
+ std::error_code EC;
+ llvm::raw_fd_ostream *OS = createOutputFile(
+ OutputPath, EC, Binary, RemoveFileOnSignal, InFile, Extension,
+ UseTemporary, CreateMissingDirectories, &OutputPathName, &TempPathName);
if (!OS) {
- getDiagnostics().Report(diag::err_fe_unable_to_open_output)
- << OutputPath << Error;
+ getDiagnostics().Report(diag::err_fe_unable_to_open_output) << OutputPath
+ << EC.message();
return nullptr;
}
@@ -591,17 +588,11 @@
return OS;
}
-llvm::raw_fd_ostream *
-CompilerInstance::createOutputFile(StringRef OutputPath,
- std::string &Error,
- bool Binary,
- bool RemoveFileOnSignal,
- StringRef InFile,
- StringRef Extension,
- bool UseTemporary,
- bool CreateMissingDirectories,
- std::string *ResultPathName,
- std::string *TempPathName) {
+llvm::raw_fd_ostream *CompilerInstance::createOutputFile(
+ StringRef OutputPath, std::error_code &Error, bool Binary,
+ bool RemoveFileOnSignal, StringRef InFile, StringRef Extension,
+ bool UseTemporary, bool CreateMissingDirectories,
+ std::string *ResultPathName, std::string *TempPathName) {
assert((!CreateMissingDirectories || UseTemporary) &&
"CreateMissingDirectories is only allowed when using temporary files");
@@ -670,9 +661,9 @@
if (!OS) {
OSFile = OutFile;
OS.reset(new llvm::raw_fd_ostream(
- OSFile.c_str(), Error,
+ OSFile, Error,
(Binary ? llvm::sys::fs::F_None : llvm::sys::fs::F_Text)));
- if (!Error.empty())
+ if (Error)
return nullptr;
}
@@ -705,7 +696,8 @@
Kind = Input.isSystem() ? SrcMgr::C_System : SrcMgr::C_User;
if (Input.isBuffer()) {
- SourceMgr.setMainFileID(SourceMgr.createFileID(Input.getBuffer(), Kind));
+ SourceMgr.setMainFileID(SourceMgr.createFileID(
+ std::unique_ptr<llvm::MemoryBuffer>(Input.getBuffer()), Kind));
assert(!SourceMgr.getMainFileID().isInvalid() &&
"Couldn't establish MainFileID!");
return true;
@@ -727,14 +719,14 @@
// pick up the correct size, and simply override their contents as we do for
// STDIN.
if (File->isNamedPipe()) {
- std::string ErrorStr;
- if (llvm::MemoryBuffer *MB =
- FileMgr.getBufferForFile(File, &ErrorStr, /*isVolatile=*/true)) {
+ auto MB = FileMgr.getBufferForFile(File, /*isVolatile=*/true);
+ if (MB) {
// Create a new virtual file that will have the correct size.
- File = FileMgr.getVirtualFile(InputFile, MB->getBufferSize(), 0);
- SourceMgr.overrideFileContents(File, MB);
+ File = FileMgr.getVirtualFile(InputFile, (*MB)->getBufferSize(), 0);
+ SourceMgr.overrideFileContents(File, std::move(*MB));
} else {
- Diags.Report(diag::err_cannot_open_file) << InputFile << ErrorStr;
+ Diags.Report(diag::err_cannot_open_file) << InputFile
+ << MB.getError().message();
return false;
}
}
@@ -754,7 +746,7 @@
SB->getBufferSize(), 0);
SourceMgr.setMainFileID(
SourceMgr.createFileID(File, SourceLocation(), Kind));
- SourceMgr.overrideFileContents(File, SB.release());
+ SourceMgr.overrideFileContents(File, std::move(SB));
}
assert(!SourceMgr.getMainFileID().isInvalid() &&
@@ -802,8 +794,9 @@
llvm::EnableStatistics();
for (unsigned i = 0, e = getFrontendOpts().Inputs.size(); i != e; ++i) {
- // Reset the ID tables if we are reusing the SourceManager.
- if (hasSourceManager())
+ // Reset the ID tables if we are reusing the SourceManager and parsing
+ // regular files.
+ if (hasSourceManager() && !Act.isModelParsingAction())
getSourceManager().clearIDTables();
if (Act.BeginSourceFile(*this, getFrontendOpts().Inputs[i])) {
@@ -852,11 +845,12 @@
}
/// \brief Compile a module file for the given module, using the options
-/// provided by the importing compiler instance.
-static void compileModuleImpl(CompilerInstance &ImportingInstance,
- SourceLocation ImportLoc,
- Module *Module,
- StringRef ModuleFileName) {
+/// provided by the importing compiler instance. Returns true if the module
+/// was built without errors.
+static bool compileModuleImpl(CompilerInstance &ImportingInstance,
+ SourceLocation ImportLoc,
+ Module *Module,
+ StringRef ModuleFileName) {
ModuleMap &ModMap
= ImportingInstance.getPreprocessor().getHeaderSearchInfo().getModuleMap();
@@ -950,17 +944,22 @@
FrontendOpts.Inputs.push_back(
FrontendInputFile("__inferred_module.map", IK));
- llvm::MemoryBuffer *ModuleMapBuffer =
+ std::unique_ptr<llvm::MemoryBuffer> ModuleMapBuffer =
llvm::MemoryBuffer::getMemBuffer(InferredModuleMapContent);
ModuleMapFile = Instance.getFileManager().getVirtualFile(
"__inferred_module.map", InferredModuleMapContent.size(), 0);
- SourceMgr.overrideFileContents(ModuleMapFile, ModuleMapBuffer);
+ SourceMgr.overrideFileContents(ModuleMapFile, std::move(ModuleMapBuffer));
}
- // Construct a module-generating action. Passing through Module->ModuleMap is
+ // Construct a module-generating action. Passing through the module map is
// safe because the FileManager is shared between the compiler instances.
- GenerateModuleAction CreateModuleAction(Module->ModuleMap, Module->IsSystem);
-
+ GenerateModuleAction CreateModuleAction(
+ ModMap.getModuleMapFileForUniquing(Module), Module->IsSystem);
+
+ ImportingInstance.getDiagnostics().Report(ImportLoc,
+ diag::remark_module_build)
+ << Module->Name << ModuleFileName;
+
// Execute the action to actually build the module in-place. Use a separate
// thread so that we get a stack large enough.
const unsigned ThreadStackSize = 8 << 20;
@@ -968,6 +967,10 @@
CRC.RunSafelyOnThread([&]() { Instance.ExecuteAction(CreateModuleAction); },
ThreadStackSize);
+ ImportingInstance.getDiagnostics().Report(ImportLoc,
+ diag::remark_module_build_done)
+ << Module->Name;
+
// Delete the temporary module map file.
// FIXME: Even though we're executing under crash protection, it would still
// be nice to do this with RemoveFileOnSignal when we can. However, that
@@ -979,13 +982,21 @@
if (ImportingInstance.getFrontendOpts().GenerateGlobalModuleIndex) {
ImportingInstance.setBuildGlobalModuleIndex(true);
}
+
+ return !Instance.getDiagnostics().hasErrorOccurred();
}
static bool compileAndLoadModule(CompilerInstance &ImportingInstance,
SourceLocation ImportLoc,
- SourceLocation ModuleNameLoc,
- Module *Module,
+ SourceLocation ModuleNameLoc, Module *Module,
StringRef ModuleFileName) {
+ DiagnosticsEngine &Diags = ImportingInstance.getDiagnostics();
+
+ auto diagnoseBuildFailure = [&] {
+ Diags.Report(ModuleNameLoc, diag::err_module_not_built)
+ << Module->Name << SourceRange(ImportLoc, ModuleNameLoc);
+ };
+
// FIXME: have LockFileManager return an error_code so that we can
// avoid the mkdir when the directory already exists.
StringRef Dir = llvm::sys::path::parent_path(ModuleFileName);
@@ -996,13 +1007,17 @@
llvm::LockFileManager Locked(ModuleFileName);
switch (Locked) {
case llvm::LockFileManager::LFS_Error:
+ Diags.Report(ModuleNameLoc, diag::err_module_lock_failure)
+ << Module->Name;
return false;
case llvm::LockFileManager::LFS_Owned:
// We're responsible for building the module ourselves.
- // FIXME: if there are errors, don't attempt to load the module.
- compileModuleImpl(ImportingInstance, ModuleNameLoc, Module,
- ModuleFileName);
+ if (!compileModuleImpl(ImportingInstance, ModuleNameLoc, Module,
+ ModuleFileName)) {
+ diagnoseBuildFailure();
+ return false;
+ }
break;
case llvm::LockFileManager::LFS_Shared:
@@ -1017,7 +1032,7 @@
// Try to read the module file, now that we've compiled it.
ASTReader::ASTReadResult ReadResult =
ImportingInstance.getModuleManager()->ReadAST(
- ModuleFileName, serialization::MK_Module, ImportLoc,
+ ModuleFileName, serialization::MK_ImplicitModule, ImportLoc,
ModuleLoadCapabilities);
if (ReadResult == ASTReader::OutOfDate &&
@@ -1027,9 +1042,11 @@
// consistent with this ImportingInstance. Try again...
continue;
} else if (ReadResult == ASTReader::Missing) {
- ImportingInstance.getDiagnostics().Report(ModuleNameLoc,
- diag::err_module_not_built)
- << Module->Name << SourceRange(ImportLoc, ModuleNameLoc);
+ diagnoseBuildFailure();
+ } else if (ReadResult != ASTReader::Success &&
+ !Diags.hasErrorOccurred()) {
+ // The ASTReader didn't diagnose the error, so conservatively report it.
+ diagnoseBuildFailure();
}
return ReadResult == ASTReader::Success;
}
@@ -1123,9 +1140,8 @@
/// \brief Write a new timestamp file with the given path.
static void writeTimestampFile(StringRef TimestampFile) {
- std::string ErrorInfo;
- llvm::raw_fd_ostream Out(TimestampFile.str().c_str(), ErrorInfo,
- llvm::sys::fs::F_None);
+ std::error_code EC;
+ llvm::raw_fd_ostream Out(TimestampFile.str(), EC, llvm::sys::fs::F_None);
}
/// \brief Prune the module cache of modules that haven't been accessed in
@@ -1243,6 +1259,63 @@
}
}
+bool CompilerInstance::loadModuleFile(StringRef FileName) {
+ // Helper to recursively read the module names for all modules we're adding.
+ // We mark these as known and redirect any attempt to load that module to
+ // the files we were handed.
+ struct ReadModuleNames : ASTReaderListener {
+ CompilerInstance &CI;
+ std::vector<StringRef> ModuleFileStack;
+ bool Failed;
+ bool TopFileIsModule;
+
+ ReadModuleNames(CompilerInstance &CI)
+ : CI(CI), Failed(false), TopFileIsModule(false) {}
+
+ bool needsImportVisitation() const override { return true; }
+
+ void visitImport(StringRef FileName) override {
+ ModuleFileStack.push_back(FileName);
+ if (ASTReader::readASTFileControlBlock(FileName, CI.getFileManager(),
+ *this)) {
+ CI.getDiagnostics().Report(SourceLocation(),
+ diag::err_module_file_not_found)
+ << FileName;
+ // FIXME: Produce a note stack explaining how we got here.
+ Failed = true;
+ }
+ ModuleFileStack.pop_back();
+ }
+
+ void ReadModuleName(StringRef ModuleName) override {
+ if (ModuleFileStack.size() == 1)
+ TopFileIsModule = true;
+
+ auto &ModuleFile = CI.ModuleFileOverrides[ModuleName];
+ if (!ModuleFile.empty() && ModuleFile != ModuleFileStack.back())
+ CI.getDiagnostics().Report(SourceLocation(),
+ diag::err_conflicting_module_files)
+ << ModuleName << ModuleFile << ModuleFileStack.back();
+ ModuleFile = ModuleFileStack.back();
+ }
+ } RMN(*this);
+
+ RMN.visitImport(FileName);
+
+ if (RMN.Failed)
+ return false;
+
+ // If we never found a module name for the top file, then it's not a module,
+ // it's a PCH or preamble or something.
+ if (!RMN.TopFileIsModule) {
+ getDiagnostics().Report(SourceLocation(), diag::err_module_file_not_module)
+ << FileName;
+ return false;
+ }
+
+ return true;
+}
+
ModuleLoadResult
CompilerInstance::loadModule(SourceLocation ImportLoc,
ModuleIdPath Path,
@@ -1257,7 +1330,8 @@
// when both the preprocessor and parser see the same import declaration.
if (!ImportLoc.isInvalid() && LastModuleImportLoc == ImportLoc) {
// Make the named module visible.
- if (LastModuleImportResult && ModuleName != getLangOpts().CurrentModule)
+ if (LastModuleImportResult && ModuleName != getLangOpts().CurrentModule &&
+ ModuleName != getLangOpts().ImplementationOfModule)
ModuleManager->makeModuleVisible(LastModuleImportResult, Visibility,
ImportLoc, /*Complain=*/false);
return LastModuleImportResult;
@@ -1271,7 +1345,8 @@
if (Known != KnownModules.end()) {
// Retrieve the cached top-level module.
Module = Known->second;
- } else if (ModuleName == getLangOpts().CurrentModule) {
+ } else if (ModuleName == getLangOpts().CurrentModule ||
+ ModuleName == getLangOpts().ImplementationOfModule) {
// This is the module we're building.
Module = PP->getHeaderSearchInfo().lookupModule(ModuleName);
Known = KnownModules.insert(std::make_pair(Path[0].first, Module)).first;
@@ -1286,8 +1361,12 @@
return ModuleLoadResult();
}
+ auto Override = ModuleFileOverrides.find(ModuleName);
+ bool Explicit = Override != ModuleFileOverrides.end();
+
std::string ModuleFileName =
- PP->getHeaderSearchInfo().getModuleFileName(Module);
+ Explicit ? Override->second
+ : PP->getHeaderSearchInfo().getModuleFileName(Module);
// If we don't already have an ASTReader, create one now.
if (!ModuleManager)
@@ -1303,14 +1382,24 @@
Listener->attachToASTReader(*ModuleManager);
// Try to load the module file.
- unsigned ARRFlags = ASTReader::ARR_OutOfDate | ASTReader::ARR_Missing;
- switch (ModuleManager->ReadAST(ModuleFileName, serialization::MK_Module,
+ unsigned ARRFlags =
+ Explicit ? 0 : ASTReader::ARR_OutOfDate | ASTReader::ARR_Missing;
+ switch (ModuleManager->ReadAST(ModuleFileName,
+ Explicit ? serialization::MK_ExplicitModule
+ : serialization::MK_ImplicitModule,
ImportLoc, ARRFlags)) {
case ASTReader::Success:
break;
case ASTReader::OutOfDate:
case ASTReader::Missing: {
+ if (Explicit) {
+ // ReadAST has already complained for us.
+ ModuleLoader::HadFatalFailure = true;
+ KnownModules[Path[0].first] = nullptr;
+ return ModuleLoadResult();
+ }
+
// The module file is missing or out-of-date. Build it.
assert(Module && "missing module file");
// Check whether there is a cycle in the module graph.
@@ -1334,9 +1423,6 @@
return ModuleLoadResult();
}
- getDiagnostics().Report(ImportLoc, diag::remark_module_build)
- << ModuleName << ModuleFileName;
-
// Check whether we have already attempted to build this module (but
// failed).
if (getPreprocessorOpts().FailedModules &&
@@ -1351,6 +1437,8 @@
// Try to compile and then load the module.
if (!compileAndLoadModule(*this, ImportLoc, ModuleNameLoc, Module,
ModuleFileName)) {
+ assert(getDiagnostics().hasErrorOccurred() &&
+ "undiagnosed error in compileAndLoadModule");
if (getPreprocessorOpts().FailedModules)
getPreprocessorOpts().FailedModules->addFailed(ModuleName);
KnownModules[Path[0].first] = nullptr;
@@ -1440,6 +1528,10 @@
Module = Sub;
}
}
+
+ // Don't make the module visible if we are in the implementation.
+ if (ModuleName == getLangOpts().ImplementationOfModule)
+ return ModuleLoadResult(Module, false);
// Make the named module visible, if it's not already part of the module
// we are parsing.
@@ -1594,3 +1686,4 @@
return false;
}
+void CompilerInstance::resetAndLeakSema() { BuryPointer(takeSema()); }
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 3d79ac7..f261c6c 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -111,25 +111,21 @@
return 0;
}
-static void addWarningArgs(ArgList &Args, std::vector<std::string> &Warnings) {
- for (arg_iterator I = Args.filtered_begin(OPT_W_Group),
- E = Args.filtered_end(); I != E; ++I) {
- Arg *A = *I;
- // If the argument is a pure flag, add its name (minus the "W" at the beginning)
- // to the warning list. Else, add its value (for the OPT_W case).
+static void addDiagnosticArgs(ArgList &Args, OptSpecifier Group,
+ OptSpecifier GroupWithValue,
+ std::vector<std::string> &Diagnostics) {
+ for (Arg *A : Args.filtered(Group)) {
if (A->getOption().getKind() == Option::FlagClass) {
- Warnings.push_back(A->getOption().getName().substr(1));
+ // The argument is a pure flag (such as OPT_Wall or OPT_Wdeprecated). Add
+ // its name (minus the "W" or "R" at the beginning) to the warning list.
+ Diagnostics.push_back(A->getOption().getName().drop_front(1));
+ } else if (A->getOption().matches(GroupWithValue)) {
+ // This is -Wfoo= or -Rfoo=, where foo is the name of the diagnostic group.
+ Diagnostics.push_back(A->getOption().getName().drop_front(1).rtrim("=-"));
} else {
- for (unsigned Idx = 0, End = A->getNumValues();
- Idx < End; ++Idx) {
- StringRef V = A->getValue(Idx);
- // "-Wl," and such are not warning options.
- // FIXME: Should be handled by putting these in separate flags.
- if (V.startswith("l,") || V.startswith("a,") || V.startswith("p,"))
- continue;
-
- Warnings.push_back(V);
- }
+ // Otherwise, add its value (for OPT_W_Joined and similar).
+ for (const char *Arg : A->getValues())
+ Diagnostics.push_back(Arg);
}
}
}
@@ -219,6 +215,8 @@
}
Opts.ShowCheckerHelp = Args.hasArg(OPT_analyzer_checker_help);
+ Opts.DisableAllChecks = Args.hasArg(OPT_analyzer_disable_all_checks);
+
Opts.visualizeExplodedGraphWithGraphViz =
Args.hasArg(OPT_analyzer_viz_egraph_graphviz);
Opts.visualizeExplodedGraphWithUbiGraph =
@@ -403,6 +401,8 @@
Opts.SampleProfileFile = Args.getLastArgValue(OPT_fprofile_sample_use_EQ);
Opts.ProfileInstrGenerate = Args.hasArg(OPT_fprofile_instr_generate);
Opts.InstrProfileInput = Args.getLastArgValue(OPT_fprofile_instr_use_EQ);
+ Opts.CoverageMapping = Args.hasArg(OPT_fcoverage_mapping);
+ Opts.DumpCoverageMapping = Args.hasArg(OPT_dump_coverage_mapping);
Opts.AsmVerbose = Args.hasArg(OPT_masm_verbose);
Opts.ObjCAutoRefCountExceptions = Args.hasArg(OPT_fobjc_arc_exceptions);
Opts.CUDAIsDevice = Args.hasArg(OPT_fcuda_is_device);
@@ -427,6 +427,7 @@
Opts.NumRegisterParameters = getLastArgIntValue(Args, OPT_mregparm, 0, Diags);
Opts.NoGlobalMerge = Args.hasArg(OPT_mno_global_merge);
Opts.NoExecStack = Args.hasArg(OPT_mno_exec_stack);
+ Opts.FatalWarnings = Args.hasArg(OPT_massembler_fatal_warnings);
Opts.EnableSegmentedStacks = Args.hasArg(OPT_split_stacks);
Opts.RelaxAll = Args.hasArg(OPT_mrelax_all);
Opts.OmitLeafFramePointer = Args.hasArg(OPT_momit_leaf_frame_pointer);
@@ -439,6 +440,11 @@
Args.hasArg(OPT_cl_fast_relaxed_math);
Opts.UnwindTables = Args.hasArg(OPT_munwind_tables);
Opts.RelocationModel = Args.getLastArgValue(OPT_mrelocation_model, "pic");
+ Opts.ThreadModel = Args.getLastArgValue(OPT_mthread_model, "posix");
+ if (Opts.ThreadModel != "posix" && Opts.ThreadModel != "single")
+ Diags.Report(diag::err_drv_invalid_value)
+ << Args.getLastArg(OPT_mthread_model)->getAsString(Args)
+ << Opts.ThreadModel;
Opts.TrapFuncName = Args.getLastArgValue(OPT_ftrap_function_EQ);
Opts.UseInitArray = Args.hasArg(OPT_fuse_init_array);
@@ -446,6 +452,7 @@
OPT_fno_function_sections, false);
Opts.DataSections = Args.hasFlag(OPT_fdata_sections,
OPT_fno_data_sections, false);
+ Opts.MergeFunctions = Args.hasArg(OPT_fmerge_functions);
Opts.VectorizeBB = Args.hasArg(OPT_vectorize_slp_aggressive);
Opts.VectorizeLoop = Args.hasArg(OPT_vectorize_loops);
@@ -459,7 +466,7 @@
Opts.EmitGcovArcs = Args.hasArg(OPT_femit_coverage_data);
Opts.EmitGcovNotes = Args.hasArg(OPT_femit_coverage_notes);
if (Opts.EmitGcovArcs || Opts.EmitGcovNotes) {
- Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
+ Opts.CoverageFile = Args.getLastArgValue(OPT_coverage_file);
Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
Opts.CoverageNoFunctionNamesInData =
Args.hasArg(OPT_coverage_no_function_names_in_data);
@@ -481,7 +488,8 @@
Opts.CompressDebugSections = Args.hasArg(OPT_compress_debug_sections);
Opts.DebugCompilationDir = Args.getLastArgValue(OPT_fdebug_compilation_dir);
Opts.LinkBitcodeFile = Args.getLastArgValue(OPT_mlink_bitcode_file);
- Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist);
+ Opts.SanitizeCoverage =
+ getLastArgIntValue(Args, OPT_fsanitize_coverage, 0, Diags);
Opts.SanitizeMemoryTrackOrigins =
getLastArgIntValue(Args, OPT_fsanitize_memory_track_origins_EQ, 0, Diags);
Opts.SanitizeUndefinedTrapOnError =
@@ -570,8 +578,14 @@
NeedLocTracking = true;
}
- // If the user requested one of the flags in the -Rpass family, make sure
- // that the backend tracks source location information.
+ // If the user requested to use a sample profile for PGO, then the
+ // backend will need to track source location information so the profile
+ // can be incorporated into the IR.
+ if (!Opts.SampleProfileFile.empty())
+ NeedLocTracking = true;
+
+ // If the user requested a flag that requires source locations available in
+ // the backend, make sure that the backend tracks source location information.
if (NeedLocTracking && Opts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
Opts.setDebugInfo(CodeGenOptions::LocTrackingOnly);
@@ -601,8 +615,9 @@
bool Success = true;
Opts.DiagnosticLogFile = Args.getLastArgValue(OPT_diagnostic_log_file);
- Opts.DiagnosticSerializationFile =
- Args.getLastArgValue(OPT_diagnostic_serialized_file);
+ if (Arg *A =
+ Args.getLastArg(OPT_diagnostic_serialized_file, OPT__serialize_diags))
+ Opts.DiagnosticSerializationFile = A->getValue();
Opts.IgnoreWarnings = Args.hasArg(OPT_w);
Opts.NoRewriteMacros = Args.hasArg(OPT_Wno_rewrite_macros);
Opts.Pedantic = Args.hasArg(OPT_pedantic);
@@ -699,7 +714,8 @@
<< Opts.TabStop << DiagnosticOptions::DefaultTabStop;
}
Opts.MessageLength = getLastArgIntValue(Args, OPT_fmessage_length, 0, Diags);
- addWarningArgs(Args, Opts.Warnings);
+ addDiagnosticArgs(Args, OPT_W_Group, OPT_W_value_Group, Opts.Warnings);
+ addDiagnosticArgs(Args, OPT_R_Group, OPT_R_value_Group, Opts.Remarks);
return Success;
}
@@ -719,6 +735,7 @@
case OPT_ast_list:
Opts.ProgramAction = frontend::ASTDeclList; break;
case OPT_ast_dump:
+ case OPT_ast_dump_lookups:
Opts.ProgramAction = frontend::ASTDump; break;
case OPT_ast_print:
Opts.ProgramAction = frontend::ASTPrint; break;
@@ -826,11 +843,13 @@
Opts.FixOnlyWarnings = Args.hasArg(OPT_fix_only_warnings);
Opts.FixAndRecompile = Args.hasArg(OPT_fixit_recompile);
Opts.FixToTemporaries = Args.hasArg(OPT_fixit_to_temp);
+ Opts.ASTDumpDecls = Args.hasArg(OPT_ast_dump);
Opts.ASTDumpFilter = Args.getLastArgValue(OPT_ast_dump_filter);
Opts.ASTDumpLookups = Args.hasArg(OPT_ast_dump_lookups);
Opts.UseGlobalModuleIndex = !Args.hasArg(OPT_fno_modules_global_index);
Opts.GenerateGlobalModuleIndex = Opts.UseGlobalModuleIndex;
-
+ Opts.ModuleFiles = Args.getAllArgValues(OPT_fmodule_file);
+
Opts.CodeCompleteOpts.IncludeMacros
= Args.hasArg(OPT_code_completion_macros);
Opts.CodeCompleteOpts.IncludeCodePatterns
@@ -869,6 +888,8 @@
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Literals;
if (Args.hasArg(OPT_objcmt_migrate_subscripting))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Subscripting;
+ if (Args.hasArg(OPT_objcmt_migrate_property_dot_syntax))
+ Opts.ObjCMTAction |= FrontendOptions::ObjCMT_PropertyDotSyntax;
if (Args.hasArg(OPT_objcmt_migrate_property))
Opts.ObjCMTAction |= FrontendOptions::ObjCMT_Property;
if (Args.hasArg(OPT_objcmt_migrate_readonly_property))
@@ -1121,7 +1142,7 @@
case IK_PreprocessedC:
case IK_ObjC:
case IK_PreprocessedObjC:
- LangStd = LangStandard::lang_gnu99;
+ LangStd = LangStandard::lang_gnu11;
break;
case IK_CXX:
case IK_PreprocessedCXX:
@@ -1138,7 +1159,7 @@
Opts.C11 = Std.isC11();
Opts.CPlusPlus = Std.isCPlusPlus();
Opts.CPlusPlus11 = Std.isCPlusPlus11();
- Opts.CPlusPlus1y = Std.isCPlusPlus1y();
+ Opts.CPlusPlus14 = Std.isCPlusPlus14();
Opts.CPlusPlus1z = Std.isCPlusPlus1z();
Opts.Digraphs = Std.hasDigraphs();
Opts.GNUMode = Std.isGNUMode();
@@ -1151,10 +1172,12 @@
if (LangStd == LangStandard::lang_opencl)
Opts.OpenCLVersion = 100;
else if (LangStd == LangStandard::lang_opencl11)
- Opts.OpenCLVersion = 110;
+ Opts.OpenCLVersion = 110;
else if (LangStd == LangStandard::lang_opencl12)
Opts.OpenCLVersion = 120;
-
+ else if (LangStd == LangStandard::lang_opencl20)
+ Opts.OpenCLVersion = 200;
+
// OpenCL has some additional defaults.
if (Opts.OpenCL) {
Opts.AltiVec = 0;
@@ -1185,8 +1208,8 @@
Opts.DollarIdents = !Opts.AsmPreprocessor;
- // C++1y onwards has sized global deallocation functions.
- Opts.SizedDeallocation = Opts.CPlusPlus1y;
+ // C++14 onwards has sized global deallocation functions.
+ Opts.SizedDeallocation = Opts.CPlusPlus14;
}
/// Attempt to parse a visibility value out of the given argument.
@@ -1208,7 +1231,7 @@
}
static unsigned parseMSCVersion(ArgList &Args, DiagnosticsEngine &Diags) {
- auto Arg = Args.getLastArg(OPT_fmsc_version);
+ auto Arg = Args.getLastArg(OPT_fms_compatibility_version);
if (!Arg)
return 0;
@@ -1225,25 +1248,8 @@
// Unfortunately, due to the bit-width limitations, we cannot currently encode
// the value for the patch level.
- StringRef Value = Arg->getValue();
-
- // parse the compatible old form of _MSC_VER or the newer _MSC_FULL_VER
- if (Value.find('.') == StringRef::npos) {
- unsigned Version = 0;
- if (Value.getAsInteger(10, Version)) {
- Diags.Report(diag::err_drv_invalid_value)
- << Arg->getAsString(Args) << Value;
- return 0;
- }
- if (Version < 100)
- Version = Version * 100; // major -> major.minor
- if (Version < 100000)
- Version = Version * 100000; // major.minor -> major.minor.build
- return Version;
- }
-
- // parse the dot-delimited component version
unsigned VC[4] = {0};
+ StringRef Value = Arg->getValue();
SmallVector<StringRef, 4> Components;
Value.split(Components, ".", llvm::array_lengthof(VC));
@@ -1319,6 +1325,7 @@
.Case("CL", LangStandard::lang_opencl)
.Case("CL1.1", LangStandard::lang_opencl11)
.Case("CL1.2", LangStandard::lang_opencl12)
+ .Case("CL2.0", LangStandard::lang_opencl20)
.Default(LangStandard::lang_unspecified);
if (OpenCLLangStd == LangStandard::lang_unspecified) {
@@ -1430,7 +1437,7 @@
Opts.MSVCCompat = Args.hasArg(OPT_fms_compatibility);
Opts.MicrosoftExt = Opts.MSVCCompat || Args.hasArg(OPT_fms_extensions);
Opts.AsmBlocks = Args.hasArg(OPT_fasm_blocks) || Opts.MicrosoftExt;
- Opts.MSCVersion = parseMSCVersion(Args, Diags);
+ Opts.MSCompatibilityVersion = parseMSCVersion(Args, Diags);
Opts.VtorDispMode = getLastArgIntValue(Args, OPT_vtordisp_mode_EQ, 1, Diags);
Opts.Borland = Args.hasArg(OPT_fborland_extensions);
Opts.WritableStrings = Args.hasArg(OPT_fwritable_strings);
@@ -1492,6 +1499,7 @@
Args.hasArg(OPT_fencode_extended_block_signature);
Opts.EmitAllDecls = Args.hasArg(OPT_femit_all_decls);
Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
+ Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
Opts.PIELevel = getLastArgIntValue(Args, OPT_pie_level, 0, Diags);
Opts.Static = Args.hasArg(OPT_static_define);
@@ -1512,6 +1520,16 @@
Opts.DebuggerObjCLiteral = Args.hasArg(OPT_fdebugger_objc_literal);
Opts.ApplePragmaPack = Args.hasArg(OPT_fapple_pragma_pack);
Opts.CurrentModule = Args.getLastArgValue(OPT_fmodule_name);
+ Opts.ImplementationOfModule =
+ Args.getLastArgValue(OPT_fmodule_implementation_of);
+ Opts.NativeHalfType = Opts.NativeHalfType;
+ Opts.HalfArgsAndReturns = Args.hasArg(OPT_fallow_half_arguments_and_returns);
+
+ if (!Opts.CurrentModule.empty() && !Opts.ImplementationOfModule.empty() &&
+ Opts.CurrentModule != Opts.ImplementationOfModule) {
+ Diags.Report(diag::err_conflicting_module_names)
+ << Opts.CurrentModule << Opts.ImplementationOfModule;
+ }
if (Arg *A = Args.getLastArg(OPT_faddress_space_map_mangling_EQ)) {
switch (llvm::StringSwitch<unsigned>(A->getValue())
@@ -1596,34 +1614,21 @@
// Parse -fsanitize= arguments.
std::vector<std::string> Sanitizers = Args.getAllArgValues(OPT_fsanitize_EQ);
- for (unsigned I = 0, N = Sanitizers.size(); I != N; ++I) {
- // Since the Opts.Sanitize* values are bitfields, it's a little tricky to
- // efficiently map string values to them. Perform the mapping indirectly:
- // convert strings to enumerated values, then switch over the enum to set
- // the right bitfield value.
- enum Sanitizer {
-#define SANITIZER(NAME, ID) \
- ID,
+ for (const auto &Sanitizer : Sanitizers) {
+ SanitizerKind K = llvm::StringSwitch<SanitizerKind>(Sanitizer)
+#define SANITIZER(NAME, ID) .Case(NAME, SanitizerKind::ID)
#include "clang/Basic/Sanitizers.def"
- Unknown
- };
- switch (llvm::StringSwitch<unsigned>(Sanitizers[I])
-#define SANITIZER(NAME, ID) \
- .Case(NAME, ID)
-#include "clang/Basic/Sanitizers.def"
- .Default(Unknown)) {
-#define SANITIZER(NAME, ID) \
- case ID: \
- Opts.Sanitize.ID = true; \
- break;
-#include "clang/Basic/Sanitizers.def"
-
- case Unknown:
+ .Default(SanitizerKind::Unknown);
+ if (K == SanitizerKind::Unknown)
Diags.Report(diag::err_drv_invalid_value)
- << "-fsanitize=" << Sanitizers[I];
- break;
- }
+ << "-fsanitize=" << Sanitizer;
+ else
+ Opts.Sanitize.set(K, true);
}
+ // -fsanitize-address-field-padding=N has to be a LangOpt, parse it here.
+ Opts.SanitizeAddressFieldPadding =
+ getLastArgIntValue(Args, OPT_fsanitize_address_field_padding, 0, Diags);
+ Opts.SanitizerBlacklistFile = Args.getLastArgValue(OPT_fsanitize_blacklist);
}
static void ParsePreprocessorArgs(PreprocessorOptions &Opts, ArgList &Args,
@@ -2041,7 +2046,7 @@
}
IntrusiveRefCntPtr<vfs::FileSystem> FS =
- vfs::getVFSFromYAML(Buffer->release(), /*DiagHandler*/ nullptr);
+ vfs::getVFSFromYAML(std::move(Buffer.get()), /*DiagHandler*/ nullptr);
if (!FS.get()) {
Diags.Report(diag::err_invalid_vfs_overlay) << File;
return IntrusiveRefCntPtr<vfs::FileSystem>();
diff --git a/lib/Frontend/CreateInvocationFromCommandLine.cpp b/lib/Frontend/CreateInvocationFromCommandLine.cpp
index f2f36e4..4a8a8a0 100644
--- a/lib/Frontend/CreateInvocationFromCommandLine.cpp
+++ b/lib/Frontend/CreateInvocationFromCommandLine.cpp
@@ -71,13 +71,13 @@
return nullptr;
}
- const driver::Command *Cmd = cast<driver::Command>(*Jobs.begin());
- if (StringRef(Cmd->getCreator().getName()) != "clang") {
+ const driver::Command &Cmd = cast<driver::Command>(*Jobs.begin());
+ if (StringRef(Cmd.getCreator().getName()) != "clang") {
Diags->Report(diag::err_fe_expected_clang_command);
return nullptr;
}
- const ArgStringList &CCArgs = Cmd->getArguments();
+ const ArgStringList &CCArgs = Cmd.getArguments();
std::unique_ptr<CompilerInvocation> CI(new CompilerInvocation());
if (!CompilerInvocation::CreateFromArgs(*CI,
const_cast<const char **>(CCArgs.data()),
diff --git a/lib/Frontend/DependencyFile.cpp b/lib/Frontend/DependencyFile.cpp
index 0b9c0d4..6ea8f51 100644
--- a/lib/Frontend/DependencyFile.cpp
+++ b/lib/Frontend/DependencyFile.cpp
@@ -22,6 +22,7 @@
#include "clang/Lex/Preprocessor.h"
#include "clang/Serialization/ASTReader.h"
#include "llvm/ADT/StringSet.h"
+#include "llvm/ADT/StringSwitch.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/raw_ostream.h"
@@ -108,23 +109,32 @@
void DependencyCollector::maybeAddDependency(StringRef Filename, bool FromModule,
bool IsSystem, bool IsModuleFile,
bool IsMissing) {
- if (Seen.insert(Filename) &&
+ if (Seen.insert(Filename).second &&
sawDependency(Filename, FromModule, IsSystem, IsModuleFile, IsMissing))
Dependencies.push_back(Filename);
}
+static bool isSpecialFilename(StringRef Filename) {
+ return llvm::StringSwitch<bool>(Filename)
+ .Case("<built-in>", true)
+ .Case("<stdin>", true)
+ .Default(false);
+}
+
bool DependencyCollector::sawDependency(StringRef Filename, bool FromModule,
bool IsSystem, bool IsModuleFile,
bool IsMissing) {
- return Filename != "<built-in>" && (needSystemDependencies() || !IsSystem);
+ return !isSpecialFilename(Filename) &&
+ (needSystemDependencies() || !IsSystem);
}
DependencyCollector::~DependencyCollector() { }
void DependencyCollector::attachToPreprocessor(Preprocessor &PP) {
- PP.addPPCallbacks(new DepCollectorPPCallbacks(*this, PP.getSourceManager()));
+ PP.addPPCallbacks(
+ llvm::make_unique<DepCollectorPPCallbacks>(*this, PP.getSourceManager()));
}
void DependencyCollector::attachToASTReader(ASTReader &R) {
- R.addListener(new DepCollectorASTListener(*this));
+ R.addListener(llvm::make_unique<DepCollectorASTListener>(*this));
}
namespace {
@@ -203,21 +213,21 @@
PP.SetSuppressIncludeNotFoundError(true);
DFGImpl *Callback = new DFGImpl(&PP, Opts);
- PP.addPPCallbacks(Callback); // PP owns the Callback
+ PP.addPPCallbacks(std::unique_ptr<PPCallbacks>(Callback));
return new DependencyFileGenerator(Callback);
}
void DependencyFileGenerator::AttachToASTReader(ASTReader &R) {
DFGImpl *I = reinterpret_cast<DFGImpl *>(Impl);
assert(I && "missing implementation");
- R.addListener(new DFGASTReaderListener(*I));
+ R.addListener(llvm::make_unique<DFGASTReaderListener>(*I));
}
/// FileMatchesDepCriteria - Determine whether the given Filename should be
/// considered as a dependency.
bool DFGImpl::FileMatchesDepCriteria(const char *Filename,
SrcMgr::CharacteristicKind FileType) {
- if (strcmp("<built-in>", Filename) == 0)
+ if (isSpecialFilename(Filename))
return false;
if (IncludeSystemHeaders)
@@ -275,7 +285,7 @@
}
void DFGImpl::AddFilename(StringRef Filename) {
- if (FilesSet.insert(Filename))
+ if (FilesSet.insert(Filename).second)
Files.push_back(Filename);
}
@@ -297,11 +307,11 @@
return;
}
- std::string Err;
- llvm::raw_fd_ostream OS(OutputFile.c_str(), Err, llvm::sys::fs::F_Text);
- if (!Err.empty()) {
- PP->getDiagnostics().Report(diag::err_fe_error_opening)
- << OutputFile << Err;
+ std::error_code EC;
+ llvm::raw_fd_ostream OS(OutputFile, EC, llvm::sys::fs::F_Text);
+ if (EC) {
+ PP->getDiagnostics().Report(diag::err_fe_error_opening) << OutputFile
+ << EC.message();
return;
}
diff --git a/lib/Frontend/DependencyGraph.cpp b/lib/Frontend/DependencyGraph.cpp
index 051b7f9..67a977e 100644
--- a/lib/Frontend/DependencyGraph.cpp
+++ b/lib/Frontend/DependencyGraph.cpp
@@ -61,7 +61,8 @@
void clang::AttachDependencyGraphGen(Preprocessor &PP, StringRef OutputFile,
StringRef SysRoot) {
- PP.addPPCallbacks(new DependencyGraphCallback(&PP, OutputFile, SysRoot));
+ PP.addPPCallbacks(llvm::make_unique<DependencyGraphCallback>(&PP, OutputFile,
+ SysRoot));
}
void DependencyGraphCallback::InclusionDirective(SourceLocation HashLoc,
@@ -96,11 +97,11 @@
}
void DependencyGraphCallback::OutputGraphFile() {
- std::string Err;
- llvm::raw_fd_ostream OS(OutputFile.c_str(), Err, llvm::sys::fs::F_Text);
- if (!Err.empty()) {
- PP->getDiagnostics().Report(diag::err_fe_error_opening)
- << OutputFile << Err;
+ std::error_code EC;
+ llvm::raw_fd_ostream OS(OutputFile, EC, llvm::sys::fs::F_Text);
+ if (EC) {
+ PP->getDiagnostics().Report(diag::err_fe_error_opening) << OutputFile
+ << EC.message();
return;
}
diff --git a/lib/Frontend/DiagnosticRenderer.cpp b/lib/Frontend/DiagnosticRenderer.cpp
index cff32b8..c63e98d 100644
--- a/lib/Frontend/DiagnosticRenderer.cpp
+++ b/lib/Frontend/DiagnosticRenderer.cpp
@@ -193,7 +193,7 @@
void DiagnosticRenderer::emitBasicNote(StringRef Message) {
emitDiagnosticMessage(
SourceLocation(), PresumedLoc(), DiagnosticsEngine::Note, Message,
- ArrayRef<CharSourceRange>(), nullptr, DiagOrStoredDiag());
+ None, nullptr, DiagOrStoredDiag());
}
/// \brief Prints an include stack when appropriate for a particular
@@ -509,6 +509,6 @@
Message << "while building module '" << ModuleName << "' imported from "
<< PLoc.getFilename() << ':' << PLoc.getLine() << ":";
else
- Message << "while building module '" << ModuleName << ":";
+ Message << "while building module '" << ModuleName << "':";
emitNote(Loc, Message.str(), &SM);
}
diff --git a/lib/Frontend/FrontendAction.cpp b/lib/Frontend/FrontendAction.cpp
index c274ba7..c81c81a 100644
--- a/lib/Frontend/FrontendAction.cpp
+++ b/lib/Frontend/FrontendAction.cpp
@@ -32,6 +32,8 @@
#include <system_error>
using namespace clang;
+template class llvm::Registry<clang::PluginASTAction>;
+
namespace {
class DelegatingDeserializationListener : public ASTDeserializationListener {
@@ -127,14 +129,15 @@
FrontendAction::~FrontendAction() {}
void FrontendAction::setCurrentInput(const FrontendInputFile &CurrentInput,
- ASTUnit *AST) {
+ std::unique_ptr<ASTUnit> AST) {
this->CurrentInput = CurrentInput;
- CurrentASTUnit.reset(AST);
+ CurrentASTUnit = std::move(AST);
}
-ASTConsumer* FrontendAction::CreateWrappedASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
- ASTConsumer* Consumer = CreateASTConsumer(CI, InFile);
+std::unique_ptr<ASTConsumer>
+FrontendAction::CreateWrappedASTConsumer(CompilerInstance &CI,
+ StringRef InFile) {
+ std::unique_ptr<ASTConsumer> Consumer = CreateASTConsumer(CI, InFile);
if (!Consumer)
return nullptr;
@@ -143,7 +146,8 @@
// Make sure the non-plugin consumer is first, so that plugins can't
// modifiy the AST.
- std::vector<ASTConsumer*> Consumers(1, Consumer);
+ std::vector<std::unique_ptr<ASTConsumer>> Consumers;
+ Consumers.push_back(std::move(Consumer));
for (size_t i = 0, e = CI.getFrontendOpts().AddPluginActions.size();
i != e; ++i) {
@@ -153,16 +157,15 @@
it = FrontendPluginRegistry::begin(),
ie = FrontendPluginRegistry::end();
it != ie; ++it) {
- if (it->getName() == CI.getFrontendOpts().AddPluginActions[i]) {
- std::unique_ptr<PluginASTAction> P(it->instantiate());
- FrontendAction* c = P.get();
- if (P->ParseArgs(CI, CI.getFrontendOpts().AddPluginArgs[i]))
- Consumers.push_back(c->CreateASTConsumer(CI, InFile));
- }
+ if (it->getName() != CI.getFrontendOpts().AddPluginActions[i])
+ continue;
+ std::unique_ptr<PluginASTAction> P = it->instantiate();
+ if (P->ParseArgs(CI, CI.getFrontendOpts().AddPluginArgs[i]))
+ Consumers.push_back(P->CreateASTConsumer(CI, InFile));
}
}
- return new MultiplexConsumer(Consumers);
+ return llvm::make_unique<MultiplexConsumer>(std::move(Consumers));
}
bool FrontendAction::BeginSourceFile(CompilerInstance &CI,
@@ -187,13 +190,12 @@
IntrusiveRefCntPtr<DiagnosticsEngine> Diags(&CI.getDiagnostics());
- ASTUnit *AST = ASTUnit::LoadFromASTFile(InputFile, Diags,
- CI.getFileSystemOpts());
+ std::unique_ptr<ASTUnit> AST =
+ ASTUnit::LoadFromASTFile(InputFile, Diags, CI.getFileSystemOpts());
+
if (!AST)
goto failure;
- setCurrentInput(Input, AST);
-
// Inform the diagnostic client we are processing a source file.
CI.getDiagnosticClient().BeginSourceFile(CI.getLangOpts(), nullptr);
HasBegunSourceFile = true;
@@ -205,6 +207,8 @@
CI.setPreprocessor(&AST->getPreprocessor());
CI.setASTContext(&AST->getASTContext());
+ setCurrentInput(Input, std::move(AST));
+
// Initialize the action.
if (!BeginSourceFileAction(CI, InputFile))
goto failure;
@@ -283,8 +287,10 @@
}
}
- // Set up the preprocessor.
- CI.createPreprocessor(getTranslationUnitKind());
+ // Set up the preprocessor if needed. When parsing model files the
+ // preprocessor of the original source is reused.
+ if (!isModelParsingAction())
+ CI.createPreprocessor(getTranslationUnitKind());
// Inform the diagnostic client we are processing a source file.
CI.getDiagnosticClient().BeginSourceFile(CI.getLangOpts(),
@@ -303,15 +309,19 @@
// Create the AST context and consumer unless this is a preprocessor only
// action.
if (!usesPreprocessorOnly()) {
- CI.createASTContext();
+ // Parsing a model file should reuse the existing ASTContext.
+ if (!isModelParsingAction())
+ CI.createASTContext();
- std::unique_ptr<ASTConsumer> Consumer(
- CreateWrappedASTConsumer(CI, InputFile));
+ std::unique_ptr<ASTConsumer> Consumer =
+ CreateWrappedASTConsumer(CI, InputFile);
if (!Consumer)
goto failure;
- CI.getASTContext().setASTMutationListener(Consumer->GetASTMutationListener());
-
+ // FIXME: should not overwrite ASTMutationListener when parsing model files?
+ if (!isModelParsingAction())
+ CI.getASTContext().setASTMutationListener(Consumer->GetASTMutationListener());
+
if (!CI.getPreprocessorOpts().ChainedIncludes.empty()) {
// Convert headers to PCH and chain them.
IntrusiveRefCntPtr<ExternalSemaSource> source, FinalReader;
@@ -347,7 +357,7 @@
goto failure;
}
- CI.setASTConsumer(Consumer.release());
+ CI.setASTConsumer(std::move(Consumer));
if (!CI.hasASTConsumer())
goto failure;
}
@@ -373,6 +383,11 @@
"doesn't support modules");
}
+ // If we were asked to load any module files, do so now.
+ for (const auto &ModuleFile : CI.getFrontendOpts().ModuleFiles)
+ if (!CI.loadModuleFile(ModuleFile))
+ goto failure;
+
// If there is a layout overrides file, attach an external AST source that
// provides the layouts from that file.
if (!CI.getFrontendOpts().OverrideRecordLayoutsFile.empty() &&
@@ -430,6 +445,10 @@
// Inform the diagnostic client we are done with this source file.
CI.getDiagnosticClient().EndSourceFile();
+ // Inform the preprocessor we are done.
+ if (CI.hasPreprocessor())
+ CI.getPreprocessor().EndSourceFile();
+
// Finalize the action.
EndSourceFileAction();
@@ -442,7 +461,7 @@
CI.resetAndLeakSema();
CI.resetAndLeakASTContext();
}
- BuryPointer(CI.takeASTConsumer());
+ BuryPointer(CI.takeASTConsumer().get());
} else {
if (!isCurrentFileAST()) {
CI.setSema(nullptr);
@@ -451,10 +470,6 @@
CI.setASTConsumer(nullptr);
}
- // Inform the preprocessor we are done.
- if (CI.hasPreprocessor())
- CI.getPreprocessor().EndSourceFile();
-
if (CI.getFrontendOpts().ShowStats) {
llvm::errs() << "\nSTATISTICS FOR '" << getCurrentFile() << "':\n";
CI.getPreprocessor().PrintStats();
@@ -514,14 +529,15 @@
void PluginASTAction::anchor() { }
-ASTConsumer *
+std::unique_ptr<ASTConsumer>
PreprocessorFrontendAction::CreateASTConsumer(CompilerInstance &CI,
StringRef InFile) {
llvm_unreachable("Invalid CreateASTConsumer on preprocessor action!");
}
-ASTConsumer *WrapperFrontendAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
+std::unique_ptr<ASTConsumer>
+WrapperFrontendAction::CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) {
return WrappedAction->CreateASTConsumer(CI, InFile);
}
bool WrapperFrontendAction::BeginInvocation(CompilerInstance &CI) {
diff --git a/lib/Frontend/FrontendActions.cpp b/lib/Frontend/FrontendActions.cpp
index ef6bfec..6a2ac60 100644
--- a/lib/Frontend/FrontendActions.cpp
+++ b/lib/Frontend/FrontendActions.cpp
@@ -33,9 +33,9 @@
// Custom Actions
//===----------------------------------------------------------------------===//
-ASTConsumer *InitOnlyAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
- return new ASTConsumer();
+std::unique_ptr<ASTConsumer>
+InitOnlyAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
+ return llvm::make_unique<ASTConsumer>();
}
void InitOnlyAction::ExecuteAction() {
@@ -45,36 +45,38 @@
// AST Consumer Actions
//===----------------------------------------------------------------------===//
-ASTConsumer *ASTPrintAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
+std::unique_ptr<ASTConsumer>
+ASTPrintAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
if (raw_ostream *OS = CI.createDefaultOutputFile(false, InFile))
return CreateASTPrinter(OS, CI.getFrontendOpts().ASTDumpFilter);
return nullptr;
}
-ASTConsumer *ASTDumpAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
+std::unique_ptr<ASTConsumer>
+ASTDumpAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
return CreateASTDumper(CI.getFrontendOpts().ASTDumpFilter,
+ CI.getFrontendOpts().ASTDumpDecls,
CI.getFrontendOpts().ASTDumpLookups);
}
-ASTConsumer *ASTDeclListAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
+std::unique_ptr<ASTConsumer>
+ASTDeclListAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
return CreateASTDeclNodeLister();
}
-ASTConsumer *ASTViewAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
+std::unique_ptr<ASTConsumer>
+ASTViewAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
return CreateASTViewer();
}
-ASTConsumer *DeclContextPrintAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
+std::unique_ptr<ASTConsumer>
+DeclContextPrintAction::CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) {
return CreateDeclContextPrinter();
}
-ASTConsumer *GeneratePCHAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
+std::unique_ptr<ASTConsumer>
+GeneratePCHAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
std::string Sysroot;
std::string OutputFile;
raw_ostream *OS = nullptr;
@@ -83,8 +85,8 @@
if (!CI.getFrontendOpts().RelocatablePCH)
Sysroot.clear();
- return new PCHGenerator(CI.getPreprocessor(), OutputFile, nullptr, Sysroot,
- OS);
+ return llvm::make_unique<PCHGenerator>(CI.getPreprocessor(), OutputFile,
+ nullptr, Sysroot, OS);
}
bool GeneratePCHAction::ComputeASTConsumerArguments(CompilerInstance &CI,
@@ -111,16 +113,17 @@
return false;
}
-ASTConsumer *GenerateModuleAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
+std::unique_ptr<ASTConsumer>
+GenerateModuleAction::CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) {
std::string Sysroot;
std::string OutputFile;
raw_ostream *OS = nullptr;
if (ComputeASTConsumerArguments(CI, InFile, Sysroot, OutputFile, OS))
return nullptr;
- return new PCHGenerator(CI.getPreprocessor(), OutputFile, Module,
- Sysroot, OS);
+ return llvm::make_unique<PCHGenerator>(CI.getPreprocessor(), OutputFile,
+ Module, Sysroot, OS);
}
static SmallVectorImpl<char> &
@@ -301,10 +304,12 @@
return false;
}
- if (!ModuleMapForUniquing)
+ if (ModuleMapForUniquing && ModuleMapForUniquing != ModuleMap) {
+ Module->IsInferred = true;
+ HS.getModuleMap().setInferredModuleAllowedBy(Module, ModuleMapForUniquing);
+ } else {
ModuleMapForUniquing = ModuleMap;
- Module->ModuleMap = ModuleMapForUniquing;
- assert(Module->ModuleMap && "missing module map file");
+ }
FileManager &FileMgr = CI.getFileManager();
@@ -326,11 +331,11 @@
return false;
}
- llvm::MemoryBuffer *InputBuffer =
+ std::unique_ptr<llvm::MemoryBuffer> InputBuffer =
llvm::MemoryBuffer::getMemBufferCopy(HeaderContents,
Module::getModuleInputBufferName());
// Ownership of InputBuffer will be transferred to the SourceManager.
- setCurrentInput(FrontendInputFile(InputBuffer, getCurrentFileKind(),
+ setCurrentInput(FrontendInputFile(InputBuffer.release(), getCurrentFileKind(),
Module->IsSystem));
return true;
}
@@ -363,19 +368,20 @@
return false;
}
-ASTConsumer *SyntaxOnlyAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
- return new ASTConsumer();
+std::unique_ptr<ASTConsumer>
+SyntaxOnlyAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
+ return llvm::make_unique<ASTConsumer>();
}
-ASTConsumer *DumpModuleInfoAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
- return new ASTConsumer();
+std::unique_ptr<ASTConsumer>
+DumpModuleInfoAction::CreateASTConsumer(CompilerInstance &CI,
+ StringRef InFile) {
+ return llvm::make_unique<ASTConsumer>();
}
-ASTConsumer *VerifyPCHAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
- return new ASTConsumer();
+std::unique_ptr<ASTConsumer>
+VerifyPCHAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
+ return llvm::make_unique<ASTConsumer>();
}
void VerifyPCHAction::ExecuteAction() {
@@ -425,8 +431,8 @@
Out.indent(2) << "Module map file: " << ModuleMapPath << "\n";
}
- bool ReadLanguageOptions(const LangOptions &LangOpts,
- bool Complain) override {
+ bool ReadLanguageOptions(const LangOptions &LangOpts, bool Complain,
+ bool AllowCompatibleDifferences) override {
Out.indent(2) << "Language options:\n";
#define LANGOPT(Name, Bits, Default, Description) \
DUMP_BOOLEAN(LangOpts.Name, Description);
@@ -470,10 +476,11 @@
Out.indent(4) << #Name << ": " << DiagOpts->Name << "\n";
#include "clang/Basic/DiagnosticOptions.def"
- Out.indent(4) << "Warning options:\n";
- for (const std::string &Warning : DiagOpts->Warnings) {
+ Out.indent(4) << "Diagnostic flags:\n";
+ for (const std::string &Warning : DiagOpts->Warnings)
Out.indent(6) << "-W" << Warning << "\n";
- }
+ for (const std::string &Remark : DiagOpts->Remarks)
+ Out.indent(6) << "-R" << Remark << "\n";
return false;
}
@@ -527,9 +534,9 @@
std::unique_ptr<llvm::raw_fd_ostream> OutFile;
StringRef OutputFileName = getCompilerInstance().getFrontendOpts().OutputFile;
if (!OutputFileName.empty() && OutputFileName != "-") {
- std::string ErrorInfo;
- OutFile.reset(new llvm::raw_fd_ostream(OutputFileName.str().c_str(),
- ErrorInfo, llvm::sys::fs::F_Text));
+ std::error_code EC;
+ OutFile.reset(new llvm::raw_fd_ostream(OutputFileName.str(), EC,
+ llvm::sys::fs::F_Text));
}
llvm::raw_ostream &Out = OutFile.get()? *OutFile.get() : llvm::outs();
@@ -674,13 +681,12 @@
// We can't do anything with these.
return;
}
-
+
CompilerInstance &CI = getCompilerInstance();
- llvm::MemoryBuffer *Buffer
- = CI.getFileManager().getBufferForFile(getCurrentFile());
+ auto Buffer = CI.getFileManager().getBufferForFile(getCurrentFile());
if (Buffer) {
- unsigned Preamble = Lexer::ComputePreamble(Buffer, CI.getLangOpts()).first;
- llvm::outs().write(Buffer->getBufferStart(), Preamble);
- delete Buffer;
+ unsigned Preamble =
+ Lexer::ComputePreamble((*Buffer)->getBuffer(), CI.getLangOpts()).first;
+ llvm::outs().write((*Buffer)->getBufferStart(), Preamble);
}
}
diff --git a/lib/Frontend/HeaderIncludeGen.cpp b/lib/Frontend/HeaderIncludeGen.cpp
index 8b2435b..2701194 100644
--- a/lib/Frontend/HeaderIncludeGen.cpp
+++ b/lib/Frontend/HeaderIncludeGen.cpp
@@ -54,13 +54,12 @@
// Open the output file, if used.
if (!OutputPath.empty()) {
- std::string Error;
+ std::error_code EC;
llvm::raw_fd_ostream *OS = new llvm::raw_fd_ostream(
- OutputPath.str().c_str(), Error,
- llvm::sys::fs::F_Append | llvm::sys::fs::F_Text);
- if (!Error.empty()) {
- PP.getDiagnostics().Report(
- clang::diag::warn_fe_cc_print_header_failure) << Error;
+ OutputPath.str(), EC, llvm::sys::fs::F_Append | llvm::sys::fs::F_Text);
+ if (EC) {
+ PP.getDiagnostics().Report(clang::diag::warn_fe_cc_print_header_failure)
+ << EC.message();
delete OS;
} else {
OS->SetUnbuffered();
@@ -70,9 +69,12 @@
}
}
- PP.addPPCallbacks(new HeaderIncludesCallback(&PP, ShowAllHeaders,
- OutputFile, OwnsOutputFile,
- ShowDepth, MSStyle));
+ PP.addPPCallbacks(llvm::make_unique<HeaderIncludesCallback>(&PP,
+ ShowAllHeaders,
+ OutputFile,
+ OwnsOutputFile,
+ ShowDepth,
+ MSStyle));
}
void HeaderIncludesCallback::FileChanged(SourceLocation Loc,
@@ -131,5 +133,6 @@
Msg += '\n';
OutputFile->write(Msg.data(), Msg.size());
+ OutputFile->flush();
}
}
diff --git a/lib/Frontend/InitHeaderSearch.cpp b/lib/Frontend/InitHeaderSearch.cpp
index d2edc94..5e89c8c 100644
--- a/lib/Frontend/InitHeaderSearch.cpp
+++ b/lib/Frontend/InitHeaderSearch.cpp
@@ -380,7 +380,6 @@
break;
case llvm::Triple::aarch64:
- case llvm::Triple::arm64:
AddGnuCPlusPlusIncludePaths("/usr/include/c++/4.2.1",
"arm64-apple-darwin10", "", "", triple);
break;
@@ -391,7 +390,7 @@
switch (os) {
case llvm::Triple::Linux:
llvm_unreachable("Include management is handled in the driver.");
-
+ break;
case llvm::Triple::Win32:
switch (triple.getEnvironment()) {
default: llvm_unreachable("Include management is handled in the driver.");
@@ -445,11 +444,6 @@
case llvm::Triple::Solaris:
AddGnuCPlusPlusIncludePaths("/usr/gcc/4.5/include/c++/4.5.2/",
"i386-pc-solaris2.11", "", "", triple);
- // Solaris - Fall though..
- case llvm::Triple::AuroraUX:
- // AuroraUX
- AddGnuCPlusPlusIncludePaths("/opt/gcc4/include/c++/4.2.4",
- "i386-pc-solaris2.11", "", "", triple);
break;
default:
break;
@@ -535,16 +529,16 @@
if (CurEntry.isNormalDir()) {
// If this isn't the first time we've seen this dir, remove it.
- if (SeenDirs.insert(CurEntry.getDir()))
+ if (SeenDirs.insert(CurEntry.getDir()).second)
continue;
} else if (CurEntry.isFramework()) {
// If this isn't the first time we've seen this framework dir, remove it.
- if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir()))
+ if (SeenFrameworkDirs.insert(CurEntry.getFrameworkDir()).second)
continue;
} else {
assert(CurEntry.isHeaderMap() && "Not a headermap or normal dir?");
// If this isn't the first time we've seen this headermap, remove it.
- if (SeenHeaderMaps.insert(CurEntry.getHeaderMap()))
+ if (SeenHeaderMaps.insert(CurEntry.getHeaderMap()).second)
continue;
}
diff --git a/lib/Frontend/InitPreprocessor.cpp b/lib/Frontend/InitPreprocessor.cpp
index f03348d..f671a2f 100644
--- a/lib/Frontend/InitPreprocessor.cpp
+++ b/lib/Frontend/InitPreprocessor.cpp
@@ -65,17 +65,14 @@
/// AddImplicitInclude - Add an implicit \#include of the specified file to the
/// predefines buffer.
-static void AddImplicitInclude(MacroBuilder &Builder, StringRef File,
- FileManager &FileMgr) {
- Builder.append(Twine("#include \"") +
- HeaderSearch::NormalizeDashIncludePath(File, FileMgr) + "\"");
+/// As these includes are generated by -include arguments the header search
+/// logic is going to search relatively to the current working directory.
+static void AddImplicitInclude(MacroBuilder &Builder, StringRef File) {
+ Builder.append(Twine("#include \"") + File + "\"");
}
-static void AddImplicitIncludeMacros(MacroBuilder &Builder,
- StringRef File,
- FileManager &FileMgr) {
- Builder.append(Twine("#__include_macros \"") +
- HeaderSearch::NormalizeDashIncludePath(File, FileMgr) + "\"");
+static void AddImplicitIncludeMacros(MacroBuilder &Builder, StringRef File) {
+ Builder.append(Twine("#__include_macros \"") + File + "\"");
// Marker token to stop the __include_macros fetch loop.
Builder.append("##"); // ##?
}
@@ -94,7 +91,7 @@
return;
}
- AddImplicitInclude(Builder, OriginalFile, PP.getFileManager());
+ AddImplicitInclude(Builder, OriginalFile);
}
/// \brief Add an implicit \#include using the original file used to generate
@@ -107,7 +104,7 @@
if (OriginalFile.empty())
return;
- AddImplicitInclude(Builder, OriginalFile, PP.getFileManager());
+ AddImplicitInclude(Builder, OriginalFile);
}
/// PickFP - This is used to pick a value based on the FP semantics of the
@@ -196,6 +193,16 @@
TI.isTypeSigned(Ty), Builder);
}
+static void DefineFmt(const Twine &Prefix, TargetInfo::IntType Ty,
+ const TargetInfo &TI, MacroBuilder &Builder) {
+ bool IsSigned = TI.isTypeSigned(Ty);
+ StringRef FmtModifier = TI.getTypeFormatModifier(Ty);
+ for (const char *Fmt = IsSigned ? "di" : "ouxX"; *Fmt; ++Fmt) {
+ Builder.defineMacro(Prefix + "_FMT" + Twine(*Fmt) + "__",
+ Twine("\"") + FmtModifier + Twine(*Fmt) + "\"");
+ }
+}
+
static void DefineType(const Twine &MacroName, TargetInfo::IntType Ty,
MacroBuilder &Builder) {
Builder.defineMacro(MacroName, TargetInfo::getTypeName(Ty));
@@ -221,16 +228,15 @@
// Use the target specified int64 type, when appropriate, so that [u]int64_t
// ends up being defined in terms of the correct type.
if (TypeWidth == 64)
- Ty = IsSigned ? TI.getInt64Type() : TI.getIntTypeByWidth(64, false);
+ Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
const char *Prefix = IsSigned ? "__INT" : "__UINT";
DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
+ DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
- StringRef ConstSuffix(TargetInfo::getTypeConstantSuffix(Ty));
- if (!ConstSuffix.empty())
- Builder.defineMacro(Prefix + Twine(TypeWidth) + "_C_SUFFIX__", ConstSuffix);
-
+ StringRef ConstSuffix(TI.getTypeConstantSuffix(Ty));
+ Builder.defineMacro(Prefix + Twine(TypeWidth) + "_C_SUFFIX__", ConstSuffix);
}
static void DefineExactWidthIntTypeSize(TargetInfo::IntType Ty,
@@ -242,7 +248,7 @@
// Use the target specified int64 type, when appropriate, so that [u]int64_t
// ends up being defined in terms of the correct type.
if (TypeWidth == 64)
- Ty = IsSigned ? TI.getInt64Type() : TI.getIntTypeByWidth(64, false);
+ Ty = IsSigned ? TI.getInt64Type() : TI.getUInt64Type();
const char *Prefix = IsSigned ? "__INT" : "__UINT";
DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
@@ -258,6 +264,7 @@
const char *Prefix = IsSigned ? "__INT_LEAST" : "__UINT_LEAST";
DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
+ DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
}
static void DefineFastIntType(unsigned TypeWidth, bool IsSigned,
@@ -271,6 +278,8 @@
const char *Prefix = IsSigned ? "__INT_FAST" : "__UINT_FAST";
DefineType(Prefix + Twine(TypeWidth) + "_TYPE__", Ty, Builder);
DefineTypeSize(Prefix + Twine(TypeWidth) + "_MAX__", Ty, TI, Builder);
+
+ DefineFmt(Prefix + Twine(TypeWidth), Ty, TI, Builder);
}
@@ -366,7 +375,7 @@
// C++1y [cpp.predefined]p1:
// The name __cplusplus is defined to the value 201402L when compiling a
// C++ translation unit.
- else if (LangOpts.CPlusPlus1y)
+ else if (LangOpts.CPlusPlus14)
Builder.defineMacro("__cplusplus", "201402L");
// C++11 [cpp.predefined]p1:
// The name __cplusplus is defined to the value 201103L when compiling a
@@ -400,6 +409,12 @@
/// ISO/IEC JTC1/SC22/WG21 (C++) SD-6: "SG10 Feature Test Recommendations".
static void InitializeCPlusPlusFeatureTestMacros(const LangOptions &LangOpts,
MacroBuilder &Builder) {
+ // C++98 features.
+ if (LangOpts.RTTI)
+ Builder.defineMacro("__cpp_rtti", "199711");
+ if (LangOpts.CXXExceptions)
+ Builder.defineMacro("__cpp_exceptions", "199711");
+
// C++11 features.
if (LangOpts.CPlusPlus11) {
Builder.defineMacro("__cpp_unicode_characters", "200704");
@@ -408,17 +423,25 @@
Builder.defineMacro("__cpp_user_defined_literals", "200809");
Builder.defineMacro("__cpp_lambdas", "200907");
Builder.defineMacro("__cpp_constexpr",
- LangOpts.CPlusPlus1y ? "201304" : "200704");
+ LangOpts.CPlusPlus14 ? "201304" : "200704");
+ Builder.defineMacro("__cpp_range_based_for", "200907");
Builder.defineMacro("__cpp_static_assert", "200410");
Builder.defineMacro("__cpp_decltype", "200707");
Builder.defineMacro("__cpp_attributes", "200809");
Builder.defineMacro("__cpp_rvalue_references", "200610");
Builder.defineMacro("__cpp_variadic_templates", "200704");
+ Builder.defineMacro("__cpp_initializer_lists", "200806");
+ Builder.defineMacro("__cpp_delegating_constructors", "200604");
+ Builder.defineMacro("__cpp_nsdmi", "200809");
+ Builder.defineMacro("__cpp_inheriting_constructors", "200802");
+ Builder.defineMacro("__cpp_ref_qualifiers", "200710");
+ Builder.defineMacro("__cpp_alias_templates", "200704");
}
// C++14 features.
- if (LangOpts.CPlusPlus1y) {
+ if (LangOpts.CPlusPlus14) {
Builder.defineMacro("__cpp_binary_literals", "201304");
+ Builder.defineMacro("__cpp_digit_separators", "201309");
Builder.defineMacro("__cpp_init_captures", "201304");
Builder.defineMacro("__cpp_generic_lambdas", "201304");
Builder.defineMacro("__cpp_decltype_auto", "201304");
@@ -426,6 +449,8 @@
Builder.defineMacro("__cpp_aggregate_nsdmi", "201304");
Builder.defineMacro("__cpp_variable_templates", "201304");
}
+ if (LangOpts.SizedDeallocation)
+ Builder.defineMacro("__cpp_sized_deallocation", "201309");
}
static void InitializePredefinedMacros(const TargetInfo &TI,
@@ -481,7 +506,7 @@
if (!LangOpts.GNUMode && !LangOpts.MSVCCompat)
Builder.defineMacro("__STRICT_ANSI__");
- if (LangOpts.CPlusPlus11)
+ if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus11)
Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__");
if (LangOpts.ObjC1) {
@@ -518,6 +543,8 @@
Builder.defineMacro("IBOutletCollection(ClassName)",
"__attribute__((iboutletcollection(ClassName)))");
Builder.defineMacro("IBAction", "void)__attribute__((ibaction)");
+ Builder.defineMacro("IBInspectable", "");
+ Builder.defineMacro("IB_DESIGNABLE", "");
}
if (LangOpts.CPlusPlus)
@@ -539,9 +566,9 @@
Builder.defineMacro("__BLOCKS__");
}
- if (!LangOpts.MSVCCompat && LangOpts.CXXExceptions)
+ if (!LangOpts.MSVCCompat && LangOpts.Exceptions)
Builder.defineMacro("__EXCEPTIONS");
- if (LangOpts.RTTI)
+ if (!LangOpts.MSVCCompat && LangOpts.RTTI)
Builder.defineMacro("__GXX_RTTI");
if (LangOpts.SjLjExceptions)
Builder.defineMacro("__USING_SJLJ_EXCEPTIONS__");
@@ -549,7 +576,7 @@
if (LangOpts.Deprecated)
Builder.defineMacro("__DEPRECATED");
- if (LangOpts.CPlusPlus) {
+ if (!LangOpts.MSVCCompat && LangOpts.CPlusPlus) {
Builder.defineMacro("__GNUG__", "4");
Builder.defineMacro("__GXX_WEAK__");
Builder.defineMacro("__private_extern__", "extern");
@@ -595,6 +622,12 @@
Builder.defineMacro("__LP64__");
}
+ if (TI.getPointerWidth(0) == 32 && TI.getLongWidth() == 32
+ && TI.getIntWidth() == 32) {
+ Builder.defineMacro("_ILP32");
+ Builder.defineMacro("__ILP32__");
+ }
+
// Define type sizing macros based on the target properties.
assert(TI.getCharWidth() == 8 && "Only support 8-bit char so far");
Builder.defineMacro("__CHAR_BIT__", "8");
@@ -608,12 +641,10 @@
DefineTypeSize("__INTMAX_MAX__", TI.getIntMaxType(), TI, Builder);
DefineTypeSize("__SIZE_MAX__", TI.getSizeType(), TI, Builder);
- if (!LangOpts.MSVCCompat) {
- DefineTypeSize("__UINTMAX_MAX__", TI.getUIntMaxType(), TI, Builder);
- DefineTypeSize("__PTRDIFF_MAX__", TI.getPtrDiffType(0), TI, Builder);
- DefineTypeSize("__INTPTR_MAX__", TI.getIntPtrType(), TI, Builder);
- DefineTypeSize("__UINTPTR_MAX__", TI.getUIntPtrType(), TI, Builder);
- }
+ DefineTypeSize("__UINTMAX_MAX__", TI.getUIntMaxType(), TI, Builder);
+ DefineTypeSize("__PTRDIFF_MAX__", TI.getPtrDiffType(0), TI, Builder);
+ DefineTypeSize("__INTPTR_MAX__", TI.getIntPtrType(), TI, Builder);
+ DefineTypeSize("__UINTPTR_MAX__", TI.getUIntPtrType(), TI, Builder);
DefineTypeSizeof("__SIZEOF_DOUBLE__", TI.getDoubleWidth(), TI, Builder);
DefineTypeSizeof("__SIZEOF_FLOAT__", TI.getFloatWidth(), TI, Builder);
@@ -635,27 +666,36 @@
DefineTypeSizeof("__SIZEOF_INT128__", 128, TI, Builder);
DefineType("__INTMAX_TYPE__", TI.getIntMaxType(), Builder);
+ DefineFmt("__INTMAX", TI.getIntMaxType(), TI, Builder);
+ Builder.defineMacro("__INTMAX_C_SUFFIX__",
+ TI.getTypeConstantSuffix(TI.getIntMaxType()));
DefineType("__UINTMAX_TYPE__", TI.getUIntMaxType(), Builder);
+ DefineFmt("__UINTMAX", TI.getUIntMaxType(), TI, Builder);
+ Builder.defineMacro("__UINTMAX_C_SUFFIX__",
+ TI.getTypeConstantSuffix(TI.getUIntMaxType()));
DefineTypeWidth("__INTMAX_WIDTH__", TI.getIntMaxType(), TI, Builder);
DefineType("__PTRDIFF_TYPE__", TI.getPtrDiffType(0), Builder);
+ DefineFmt("__PTRDIFF", TI.getPtrDiffType(0), TI, Builder);
DefineTypeWidth("__PTRDIFF_WIDTH__", TI.getPtrDiffType(0), TI, Builder);
DefineType("__INTPTR_TYPE__", TI.getIntPtrType(), Builder);
+ DefineFmt("__INTPTR", TI.getIntPtrType(), TI, Builder);
DefineTypeWidth("__INTPTR_WIDTH__", TI.getIntPtrType(), TI, Builder);
DefineType("__SIZE_TYPE__", TI.getSizeType(), Builder);
+ DefineFmt("__SIZE", TI.getSizeType(), TI, Builder);
DefineTypeWidth("__SIZE_WIDTH__", TI.getSizeType(), TI, Builder);
DefineType("__WCHAR_TYPE__", TI.getWCharType(), Builder);
DefineTypeWidth("__WCHAR_WIDTH__", TI.getWCharType(), TI, Builder);
DefineType("__WINT_TYPE__", TI.getWIntType(), Builder);
DefineTypeWidth("__WINT_WIDTH__", TI.getWIntType(), TI, Builder);
DefineTypeWidth("__SIG_ATOMIC_WIDTH__", TI.getSigAtomicType(), TI, Builder);
+ DefineTypeSize("__SIG_ATOMIC_MAX__", TI.getSigAtomicType(), TI, Builder);
DefineType("__CHAR16_TYPE__", TI.getChar16Type(), Builder);
DefineType("__CHAR32_TYPE__", TI.getChar32Type(), Builder);
- if (!LangOpts.MSVCCompat) {
- DefineTypeWidth("__UINTMAX_WIDTH__", TI.getUIntMaxType(), TI, Builder);
- DefineType("__UINTPTR_TYPE__", TI.getUIntPtrType(), Builder);
- DefineTypeWidth("__UINTPTR_WIDTH__", TI.getUIntPtrType(), TI, Builder);
- }
+ DefineTypeWidth("__UINTMAX_WIDTH__", TI.getUIntMaxType(), TI, Builder);
+ DefineType("__UINTPTR_TYPE__", TI.getUIntPtrType(), Builder);
+ DefineFmt("__UINTPTR", TI.getUIntPtrType(), TI, Builder);
+ DefineTypeWidth("__UINTPTR_WIDTH__", TI.getUIntPtrType(), TI, Builder);
DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F");
DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), "");
@@ -675,8 +715,7 @@
Builder.defineMacro("__WINT_UNSIGNED__");
// Define exact-width integer types for stdint.h
- Builder.defineMacro("__INT" + Twine(TI.getCharWidth()) + "_TYPE__",
- "char");
+ DefineExactWidthIntType(TargetInfo::SignedChar, TI, Builder);
if (TI.getShortWidth() > TI.getCharWidth())
DefineExactWidthIntType(TargetInfo::SignedShort, TI, Builder);
@@ -690,54 +729,52 @@
if (TI.getLongLongWidth() > TI.getLongWidth())
DefineExactWidthIntType(TargetInfo::SignedLongLong, TI, Builder);
- if (!LangOpts.MSVCCompat) {
- DefineExactWidthIntType(TargetInfo::UnsignedChar, TI, Builder);
- DefineExactWidthIntTypeSize(TargetInfo::UnsignedChar, TI, Builder);
- DefineExactWidthIntTypeSize(TargetInfo::SignedChar, TI, Builder);
+ DefineExactWidthIntType(TargetInfo::UnsignedChar, TI, Builder);
+ DefineExactWidthIntTypeSize(TargetInfo::UnsignedChar, TI, Builder);
+ DefineExactWidthIntTypeSize(TargetInfo::SignedChar, TI, Builder);
- if (TI.getShortWidth() > TI.getCharWidth()) {
- DefineExactWidthIntType(TargetInfo::UnsignedShort, TI, Builder);
- DefineExactWidthIntTypeSize(TargetInfo::UnsignedShort, TI, Builder);
- DefineExactWidthIntTypeSize(TargetInfo::SignedShort, TI, Builder);
- }
-
- if (TI.getIntWidth() > TI.getShortWidth()) {
- DefineExactWidthIntType(TargetInfo::UnsignedInt, TI, Builder);
- DefineExactWidthIntTypeSize(TargetInfo::UnsignedInt, TI, Builder);
- DefineExactWidthIntTypeSize(TargetInfo::SignedInt, TI, Builder);
- }
-
- if (TI.getLongWidth() > TI.getIntWidth()) {
- DefineExactWidthIntType(TargetInfo::UnsignedLong, TI, Builder);
- DefineExactWidthIntTypeSize(TargetInfo::UnsignedLong, TI, Builder);
- DefineExactWidthIntTypeSize(TargetInfo::SignedLong, TI, Builder);
- }
-
- if (TI.getLongLongWidth() > TI.getLongWidth()) {
- DefineExactWidthIntType(TargetInfo::UnsignedLongLong, TI, Builder);
- DefineExactWidthIntTypeSize(TargetInfo::UnsignedLongLong, TI, Builder);
- DefineExactWidthIntTypeSize(TargetInfo::SignedLongLong, TI, Builder);
- }
-
- DefineLeastWidthIntType(8, true, TI, Builder);
- DefineLeastWidthIntType(8, false, TI, Builder);
- DefineLeastWidthIntType(16, true, TI, Builder);
- DefineLeastWidthIntType(16, false, TI, Builder);
- DefineLeastWidthIntType(32, true, TI, Builder);
- DefineLeastWidthIntType(32, false, TI, Builder);
- DefineLeastWidthIntType(64, true, TI, Builder);
- DefineLeastWidthIntType(64, false, TI, Builder);
-
- DefineFastIntType(8, true, TI, Builder);
- DefineFastIntType(8, false, TI, Builder);
- DefineFastIntType(16, true, TI, Builder);
- DefineFastIntType(16, false, TI, Builder);
- DefineFastIntType(32, true, TI, Builder);
- DefineFastIntType(32, false, TI, Builder);
- DefineFastIntType(64, true, TI, Builder);
- DefineFastIntType(64, false, TI, Builder);
+ if (TI.getShortWidth() > TI.getCharWidth()) {
+ DefineExactWidthIntType(TargetInfo::UnsignedShort, TI, Builder);
+ DefineExactWidthIntTypeSize(TargetInfo::UnsignedShort, TI, Builder);
+ DefineExactWidthIntTypeSize(TargetInfo::SignedShort, TI, Builder);
}
+ if (TI.getIntWidth() > TI.getShortWidth()) {
+ DefineExactWidthIntType(TargetInfo::UnsignedInt, TI, Builder);
+ DefineExactWidthIntTypeSize(TargetInfo::UnsignedInt, TI, Builder);
+ DefineExactWidthIntTypeSize(TargetInfo::SignedInt, TI, Builder);
+ }
+
+ if (TI.getLongWidth() > TI.getIntWidth()) {
+ DefineExactWidthIntType(TargetInfo::UnsignedLong, TI, Builder);
+ DefineExactWidthIntTypeSize(TargetInfo::UnsignedLong, TI, Builder);
+ DefineExactWidthIntTypeSize(TargetInfo::SignedLong, TI, Builder);
+ }
+
+ if (TI.getLongLongWidth() > TI.getLongWidth()) {
+ DefineExactWidthIntType(TargetInfo::UnsignedLongLong, TI, Builder);
+ DefineExactWidthIntTypeSize(TargetInfo::UnsignedLongLong, TI, Builder);
+ DefineExactWidthIntTypeSize(TargetInfo::SignedLongLong, TI, Builder);
+ }
+
+ DefineLeastWidthIntType(8, true, TI, Builder);
+ DefineLeastWidthIntType(8, false, TI, Builder);
+ DefineLeastWidthIntType(16, true, TI, Builder);
+ DefineLeastWidthIntType(16, false, TI, Builder);
+ DefineLeastWidthIntType(32, true, TI, Builder);
+ DefineLeastWidthIntType(32, false, TI, Builder);
+ DefineLeastWidthIntType(64, true, TI, Builder);
+ DefineLeastWidthIntType(64, false, TI, Builder);
+
+ DefineFastIntType(8, true, TI, Builder);
+ DefineFastIntType(8, false, TI, Builder);
+ DefineFastIntType(16, true, TI, Builder);
+ DefineFastIntType(16, false, TI, Builder);
+ DefineFastIntType(32, true, TI, Builder);
+ DefineFastIntType(32, false, TI, Builder);
+ DefineFastIntType(64, true, TI, Builder);
+ DefineFastIntType(64, false, TI, Builder);
+
if (const char *Prefix = TI.getUserLabelPrefix())
Builder.defineMacro("__USER_LABEL_PREFIX__", Prefix);
@@ -746,36 +783,38 @@
else
Builder.defineMacro("__FINITE_MATH_ONLY__", "0");
- if (LangOpts.GNUInline)
- Builder.defineMacro("__GNUC_GNU_INLINE__");
- else
- Builder.defineMacro("__GNUC_STDC_INLINE__");
+ if (!LangOpts.MSVCCompat) {
+ if (LangOpts.GNUInline)
+ Builder.defineMacro("__GNUC_GNU_INLINE__");
+ else
+ Builder.defineMacro("__GNUC_STDC_INLINE__");
- // The value written by __atomic_test_and_set.
- // FIXME: This is target-dependent.
- Builder.defineMacro("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", "1");
+ // The value written by __atomic_test_and_set.
+ // FIXME: This is target-dependent.
+ Builder.defineMacro("__GCC_ATOMIC_TEST_AND_SET_TRUEVAL", "1");
- // Used by libstdc++ to implement ATOMIC_<foo>_LOCK_FREE.
- unsigned InlineWidthBits = TI.getMaxAtomicInlineWidth();
+ // Used by libstdc++ to implement ATOMIC_<foo>_LOCK_FREE.
+ unsigned InlineWidthBits = TI.getMaxAtomicInlineWidth();
#define DEFINE_LOCK_FREE_MACRO(TYPE, Type) \
- Builder.defineMacro("__GCC_ATOMIC_" #TYPE "_LOCK_FREE", \
- getLockFreeValue(TI.get##Type##Width(), \
- TI.get##Type##Align(), \
- InlineWidthBits));
- DEFINE_LOCK_FREE_MACRO(BOOL, Bool);
- DEFINE_LOCK_FREE_MACRO(CHAR, Char);
- DEFINE_LOCK_FREE_MACRO(CHAR16_T, Char16);
- DEFINE_LOCK_FREE_MACRO(CHAR32_T, Char32);
- DEFINE_LOCK_FREE_MACRO(WCHAR_T, WChar);
- DEFINE_LOCK_FREE_MACRO(SHORT, Short);
- DEFINE_LOCK_FREE_MACRO(INT, Int);
- DEFINE_LOCK_FREE_MACRO(LONG, Long);
- DEFINE_LOCK_FREE_MACRO(LLONG, LongLong);
- Builder.defineMacro("__GCC_ATOMIC_POINTER_LOCK_FREE",
- getLockFreeValue(TI.getPointerWidth(0),
- TI.getPointerAlign(0),
- InlineWidthBits));
+ Builder.defineMacro("__GCC_ATOMIC_" #TYPE "_LOCK_FREE", \
+ getLockFreeValue(TI.get##Type##Width(), \
+ TI.get##Type##Align(), \
+ InlineWidthBits));
+ DEFINE_LOCK_FREE_MACRO(BOOL, Bool);
+ DEFINE_LOCK_FREE_MACRO(CHAR, Char);
+ DEFINE_LOCK_FREE_MACRO(CHAR16_T, Char16);
+ DEFINE_LOCK_FREE_MACRO(CHAR32_T, Char32);
+ DEFINE_LOCK_FREE_MACRO(WCHAR_T, WChar);
+ DEFINE_LOCK_FREE_MACRO(SHORT, Short);
+ DEFINE_LOCK_FREE_MACRO(INT, Int);
+ DEFINE_LOCK_FREE_MACRO(LONG, Long);
+ DEFINE_LOCK_FREE_MACRO(LLONG, LongLong);
+ Builder.defineMacro("__GCC_ATOMIC_POINTER_LOCK_FREE",
+ getLockFreeValue(TI.getPointerWidth(0),
+ TI.getPointerAlign(0),
+ InlineWidthBits));
#undef DEFINE_LOCK_FREE_MACRO
+ }
if (LangOpts.NoInlineDefine)
Builder.defineMacro("__NO_INLINE__");
@@ -895,8 +934,7 @@
// If -imacros are specified, include them now. These are processed before
// any -include directives.
for (unsigned i = 0, e = InitOpts.MacroIncludes.size(); i != e; ++i)
- AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i],
- PP.getFileManager());
+ AddImplicitIncludeMacros(Builder, InitOpts.MacroIncludes[i]);
// Process -include-pch/-include-pth directives.
if (!InitOpts.ImplicitPCHInclude.empty())
@@ -907,7 +945,7 @@
// Process -include directives.
for (unsigned i = 0, e = InitOpts.Includes.size(); i != e; ++i) {
const std::string &Path = InitOpts.Includes[i];
- AddImplicitInclude(Builder, Path, PP.getFileManager());
+ AddImplicitInclude(Builder, Path);
}
// Exit the command line and go back to <built-in> (2 is LC_LEAVE).
diff --git a/lib/Frontend/LogDiagnosticPrinter.cpp b/lib/Frontend/LogDiagnosticPrinter.cpp
index 19539e0..c6a18e0 100644
--- a/lib/Frontend/LogDiagnosticPrinter.cpp
+++ b/lib/Frontend/LogDiagnosticPrinter.cpp
@@ -18,17 +18,11 @@
using namespace clang;
using namespace markup;
-LogDiagnosticPrinter::LogDiagnosticPrinter(raw_ostream &os,
- DiagnosticOptions *diags,
- bool _OwnsOutputStream)
- : OS(os), LangOpts(nullptr), DiagOpts(diags),
- OwnsOutputStream(_OwnsOutputStream) {
-}
-
-LogDiagnosticPrinter::~LogDiagnosticPrinter() {
- if (OwnsOutputStream)
- delete &OS;
-}
+LogDiagnosticPrinter::LogDiagnosticPrinter(
+ raw_ostream &os, DiagnosticOptions *diags,
+ std::unique_ptr<raw_ostream> StreamOwner)
+ : OS(os), StreamOwner(std::move(StreamOwner)), LangOpts(nullptr),
+ DiagOpts(diags) {}
static StringRef getLevelName(DiagnosticsEngine::Level Level) {
switch (Level) {
@@ -69,6 +63,14 @@
<< " ";
EmitString(OS, DE.Message) << '\n';
}
+ OS << " <key>ID</key>\n"
+ << " ";
+ EmitInteger(OS, DE.DiagnosticID) << '\n';
+ if (!DE.WarningOption.empty()) {
+ OS << " <key>WarningOption</key>\n"
+ << " ";
+ EmitString(OS, DE.WarningOption) << '\n';
+ }
OS << " </dict>\n";
}
@@ -128,6 +130,8 @@
DE.DiagnosticID = Info.getID();
DE.DiagnosticLevel = Level;
+ DE.WarningOption = DiagnosticIDs::getWarningOptionForDiag(DE.DiagnosticID);
+
// Format the message.
SmallString<100> MessageStr;
Info.FormatDiagnostic(MessageStr);
diff --git a/lib/Frontend/Makefile b/lib/Frontend/Makefile
index 3c13ad6..8554b76 100644
--- a/lib/Frontend/Makefile
+++ b/lib/Frontend/Makefile
@@ -8,7 +8,7 @@
##===----------------------------------------------------------------------===##
CLANG_LEVEL := ../..
+DIRS := Rewrite
LIBRARYNAME := clangFrontend
include $(CLANG_LEVEL)/Makefile
-
diff --git a/lib/Frontend/ModuleDependencyCollector.cpp b/lib/Frontend/ModuleDependencyCollector.cpp
index d30f921..882bf8e 100644
--- a/lib/Frontend/ModuleDependencyCollector.cpp
+++ b/lib/Frontend/ModuleDependencyCollector.cpp
@@ -38,7 +38,7 @@
}
void ModuleDependencyCollector::attachToASTReader(ASTReader &R) {
- R.addListener(new ModuleDependencyListener(*this));
+ R.addListener(llvm::make_unique<ModuleDependencyListener>(*this));
}
void ModuleDependencyCollector::writeFileMap() {
@@ -48,9 +48,9 @@
SmallString<256> Dest = getDest();
llvm::sys::path::append(Dest, "vfs.yaml");
- std::string ErrorInfo;
- llvm::raw_fd_ostream OS(Dest.c_str(), ErrorInfo, llvm::sys::fs::F_Text);
- if (!ErrorInfo.empty()) {
+ std::error_code EC;
+ llvm::raw_fd_ostream OS(Dest, EC, llvm::sys::fs::F_Text);
+ if (EC) {
setHasErrors();
return;
}
diff --git a/lib/Frontend/MultiplexConsumer.cpp b/lib/Frontend/MultiplexConsumer.cpp
index 058cee8..0198828 100644
--- a/lib/Frontend/MultiplexConsumer.cpp
+++ b/lib/Frontend/MultiplexConsumer.cpp
@@ -107,6 +107,7 @@
const ObjCPropertyDecl *OrigProp,
const ObjCCategoryDecl *ClassExt) override;
void DeclarationMarkedUsed(const Decl *D) override;
+ void DeclarationMarkedOpenMPThreadPrivate(const Decl *D) override;
private:
std::vector<ASTMutationListener*> Listeners;
@@ -180,96 +181,121 @@
for (size_t i = 0, e = Listeners.size(); i != e; ++i)
Listeners[i]->DeclarationMarkedUsed(D);
}
+void MultiplexASTMutationListener::DeclarationMarkedOpenMPThreadPrivate(
+ const Decl *D) {
+ for (size_t i = 0, e = Listeners.size(); i != e; ++i)
+ Listeners[i]->DeclarationMarkedOpenMPThreadPrivate(D);
+}
} // end namespace clang
-MultiplexConsumer::MultiplexConsumer(ArrayRef<ASTConsumer *> C)
- : Consumers(C.begin(), C.end()), MutationListener(),
- DeserializationListener() {
+MultiplexConsumer::MultiplexConsumer(
+ std::vector<std::unique_ptr<ASTConsumer>> C)
+ : Consumers(std::move(C)), MutationListener(), DeserializationListener() {
// Collect the mutation listeners and deserialization listeners of all
// children, and create a multiplex listener each if so.
std::vector<ASTMutationListener*> mutationListeners;
std::vector<ASTDeserializationListener*> serializationListeners;
- for (size_t i = 0, e = Consumers.size(); i != e; ++i) {
- ASTMutationListener* mutationListener =
- Consumers[i]->GetASTMutationListener();
- if (mutationListener)
+ for (auto &Consumer : Consumers) {
+ if (auto *mutationListener = Consumer->GetASTMutationListener())
mutationListeners.push_back(mutationListener);
- ASTDeserializationListener* serializationListener =
- Consumers[i]->GetASTDeserializationListener();
- if (serializationListener)
+ if (auto *serializationListener = Consumer->GetASTDeserializationListener())
serializationListeners.push_back(serializationListener);
}
- if (mutationListeners.size()) {
- MutationListener.reset(new MultiplexASTMutationListener(mutationListeners));
+ if (!mutationListeners.empty()) {
+ MutationListener =
+ llvm::make_unique<MultiplexASTMutationListener>(mutationListeners);
}
- if (serializationListeners.size()) {
- DeserializationListener.reset(
- new MultiplexASTDeserializationListener(serializationListeners));
+ if (!serializationListeners.empty()) {
+ DeserializationListener =
+ llvm::make_unique<MultiplexASTDeserializationListener>(
+ serializationListeners);
}
}
-MultiplexConsumer::~MultiplexConsumer() {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- delete Consumers[i];
-}
+MultiplexConsumer::~MultiplexConsumer() {}
void MultiplexConsumer::Initialize(ASTContext &Context) {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- Consumers[i]->Initialize(Context);
+ for (auto &Consumer : Consumers)
+ Consumer->Initialize(Context);
}
bool MultiplexConsumer::HandleTopLevelDecl(DeclGroupRef D) {
bool Continue = true;
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- Continue = Continue && Consumers[i]->HandleTopLevelDecl(D);
+ for (auto &Consumer : Consumers)
+ Continue = Continue && Consumer->HandleTopLevelDecl(D);
return Continue;
}
void MultiplexConsumer::HandleInlineMethodDefinition(CXXMethodDecl *D) {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- Consumers[i]->HandleInlineMethodDefinition(D);
+ for (auto &Consumer : Consumers)
+ Consumer->HandleInlineMethodDefinition(D);
}
-void MultiplexConsumer::HandleCXXStaticMemberVarInstantiation(VarDecl *VD) {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- Consumers[i]->HandleCXXStaticMemberVarInstantiation(VD);
+void MultiplexConsumer::HandleCXXStaticMemberVarInstantiation(VarDecl *VD) {
+ for (auto &Consumer : Consumers)
+ Consumer->HandleCXXStaticMemberVarInstantiation(VD);
}
void MultiplexConsumer::HandleInterestingDecl(DeclGroupRef D) {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- Consumers[i]->HandleInterestingDecl(D);
+ for (auto &Consumer : Consumers)
+ Consumer->HandleInterestingDecl(D);
}
void MultiplexConsumer::HandleTranslationUnit(ASTContext &Ctx) {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- Consumers[i]->HandleTranslationUnit(Ctx);
+ for (auto &Consumer : Consumers)
+ Consumer->HandleTranslationUnit(Ctx);
}
void MultiplexConsumer::HandleTagDeclDefinition(TagDecl *D) {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- Consumers[i]->HandleTagDeclDefinition(D);
+ for (auto &Consumer : Consumers)
+ Consumer->HandleTagDeclDefinition(D);
+}
+
+void MultiplexConsumer::HandleTagDeclRequiredDefinition(const TagDecl *D) {
+ for (auto &Consumer : Consumers)
+ Consumer->HandleTagDeclRequiredDefinition(D);
}
void MultiplexConsumer::HandleCXXImplicitFunctionInstantiation(FunctionDecl *D){
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- Consumers[i]->HandleCXXImplicitFunctionInstantiation(D);
+ for (auto &Consumer : Consumers)
+ Consumer->HandleCXXImplicitFunctionInstantiation(D);
}
void MultiplexConsumer::HandleTopLevelDeclInObjCContainer(DeclGroupRef D) {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- Consumers[i]->HandleTopLevelDeclInObjCContainer(D);
+ for (auto &Consumer : Consumers)
+ Consumer->HandleTopLevelDeclInObjCContainer(D);
+}
+
+void MultiplexConsumer::HandleImplicitImportDecl(ImportDecl *D) {
+ for (auto &Consumer : Consumers)
+ Consumer->HandleImplicitImportDecl(D);
+}
+
+void MultiplexConsumer::HandleLinkerOptionPragma(llvm::StringRef Opts) {
+ for (auto &Consumer : Consumers)
+ Consumer->HandleLinkerOptionPragma(Opts);
+}
+
+void MultiplexConsumer::HandleDetectMismatch(llvm::StringRef Name, llvm::StringRef Value) {
+ for (auto &Consumer : Consumers)
+ Consumer->HandleDetectMismatch(Name, Value);
+}
+
+void MultiplexConsumer::HandleDependentLibrary(llvm::StringRef Lib) {
+ for (auto &Consumer : Consumers)
+ Consumer->HandleDependentLibrary(Lib);
}
void MultiplexConsumer::CompleteTentativeDefinition(VarDecl *D) {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- Consumers[i]->CompleteTentativeDefinition(D);
+ for (auto &Consumer : Consumers)
+ Consumer->CompleteTentativeDefinition(D);
}
void MultiplexConsumer::HandleVTable(
CXXRecordDecl *RD, bool DefinitionRequired) {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- Consumers[i]->HandleVTable(RD, DefinitionRequired);
+ for (auto &Consumer : Consumers)
+ Consumer->HandleVTable(RD, DefinitionRequired);
}
ASTMutationListener *MultiplexConsumer::GetASTMutationListener() {
@@ -281,18 +307,18 @@
}
void MultiplexConsumer::PrintStats() {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- Consumers[i]->PrintStats();
+ for (auto &Consumer : Consumers)
+ Consumer->PrintStats();
}
void MultiplexConsumer::InitializeSema(Sema &S) {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- if (SemaConsumer *SC = dyn_cast<SemaConsumer>(Consumers[i]))
+ for (auto &Consumer : Consumers)
+ if (SemaConsumer *SC = dyn_cast<SemaConsumer>(Consumer.get()))
SC->InitializeSema(S);
}
void MultiplexConsumer::ForgetSema() {
- for (size_t i = 0, e = Consumers.size(); i != e; ++i)
- if (SemaConsumer *SC = dyn_cast<SemaConsumer>(Consumers[i]))
+ for (auto &Consumer : Consumers)
+ if (SemaConsumer *SC = dyn_cast<SemaConsumer>(Consumer.get()))
SC->ForgetSema();
}
diff --git a/lib/Frontend/PrintPreprocessedOutput.cpp b/lib/Frontend/PrintPreprocessedOutput.cpp
index 4a6f8db..7c1d9a5 100644
--- a/lib/Frontend/PrintPreprocessedOutput.cpp
+++ b/lib/Frontend/PrintPreprocessedOutput.cpp
@@ -332,7 +332,10 @@
MoveToLine(HashLoc);
OS << "@import " << Imported->getFullModuleName() << ";"
<< " /* clang -E: implicit import for \"" << File->getName() << "\" */";
+ // Since we want a newline after the @import, but not a #<line>, start a new
+ // line immediately.
EmittedTokensOnThisLine = true;
+ startNewLineIfNeeded();
}
}
@@ -724,7 +727,7 @@
PP.AddPragmaHandler("clang",
new UnknownPragmaHandler("#pragma clang", Callbacks));
- PP.addPPCallbacks(Callbacks);
+ PP.addPPCallbacks(std::unique_ptr<PPCallbacks>(Callbacks));
// After we have configured the preprocessor, enter the main file.
PP.EnterMainSourceFile();
diff --git a/lib/Frontend/Rewrite/Android.mk b/lib/Frontend/Rewrite/Android.mk
new file mode 100644
index 0000000..f23e746
--- /dev/null
+++ b/lib/Frontend/Rewrite/Android.mk
@@ -0,0 +1,48 @@
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_TBLGEN_VARS)
+
+TBLGEN_TABLES := \
+ AttrList.inc \
+ Attrs.inc \
+ AttrParsedAttrList.inc \
+ CommentCommandList.inc \
+ CommentNodes.inc \
+ DeclNodes.inc \
+ DiagnosticCommonKinds.inc \
+ DiagnosticFrontendKinds.inc \
+ StmtNodes.inc
+
+clang_rewrite_frontend_SRC_FILES := \
+ FixItRewriter.cpp \
+ FrontendActions.cpp \
+ HTMLPrint.cpp \
+ InclusionRewriter.cpp \
+ RewriteMacros.cpp \
+ RewriteModernObjC.cpp \
+ RewriteObjC.cpp \
+ RewriteTest.cpp
+
+# For the host
+# =====================================================
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := $(clang_rewrite_frontend_SRC_FILES)
+LOCAL_MODULE:= libclangRewriteFrontend
+LOCAL_MODULE_TAGS := optional
+
+include $(CLANG_HOST_BUILD_MK)
+include $(CLANG_TBLGEN_RULES_MK)
+include $(BUILD_HOST_STATIC_LIBRARY)
+
+# For the target
+# =====================================================
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := $(clang_rewrite_frontend_SRC_FILES)
+LOCAL_MODULE:= libclangRewriteFrontend
+LOCAL_MODULE_TAGS := optional
+
+include $(CLANG_DEVICE_BUILD_MK)
+include $(CLANG_TBLGEN_RULES_MK)
+include $(BUILD_STATIC_LIBRARY)
diff --git a/lib/Frontend/Rewrite/CMakeLists.txt b/lib/Frontend/Rewrite/CMakeLists.txt
new file mode 100644
index 0000000..924bf5d
--- /dev/null
+++ b/lib/Frontend/Rewrite/CMakeLists.txt
@@ -0,0 +1,22 @@
+set(LLVM_LINK_COMPONENTS
+ Support
+ )
+
+add_clang_library(clangRewriteFrontend
+ FixItRewriter.cpp
+ FrontendActions.cpp
+ HTMLPrint.cpp
+ InclusionRewriter.cpp
+ RewriteMacros.cpp
+ RewriteModernObjC.cpp
+ RewriteObjC.cpp
+ RewriteTest.cpp
+
+ LINK_LIBS
+ clangAST
+ clangBasic
+ clangEdit
+ clangFrontend
+ clangLex
+ clangRewrite
+ )
diff --git a/lib/Frontend/Rewrite/FixItRewriter.cpp b/lib/Frontend/Rewrite/FixItRewriter.cpp
new file mode 100644
index 0000000..a3e14f9
--- /dev/null
+++ b/lib/Frontend/Rewrite/FixItRewriter.cpp
@@ -0,0 +1,196 @@
+//===--- FixItRewriter.cpp - Fix-It Rewriter Diagnostic Client --*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a diagnostic client adaptor that performs rewrites as
+// suggested by code modification hints attached to diagnostics. It
+// then forwards any diagnostics to the adapted diagnostic client.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Rewrite/Frontend/FixItRewriter.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Basic/SourceLocation.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Edit/Commit.h"
+#include "clang/Edit/EditsReceiver.h"
+#include "clang/Frontend/FrontendDiagnostic.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/raw_ostream.h"
+#include <cstdio>
+#include <memory>
+
+using namespace clang;
+
+FixItRewriter::FixItRewriter(DiagnosticsEngine &Diags, SourceManager &SourceMgr,
+ const LangOptions &LangOpts,
+ FixItOptions *FixItOpts)
+ : Diags(Diags),
+ Editor(SourceMgr, LangOpts),
+ Rewrite(SourceMgr, LangOpts),
+ FixItOpts(FixItOpts),
+ NumFailures(0),
+ PrevDiagSilenced(false) {
+ Owner = Diags.takeClient();
+ Client = Diags.getClient();
+ Diags.setClient(this, false);
+}
+
+FixItRewriter::~FixItRewriter() {
+ Diags.setClient(Client, Owner.release() != nullptr);
+}
+
+bool FixItRewriter::WriteFixedFile(FileID ID, raw_ostream &OS) {
+ const RewriteBuffer *RewriteBuf = Rewrite.getRewriteBufferFor(ID);
+ if (!RewriteBuf) return true;
+ RewriteBuf->write(OS);
+ OS.flush();
+ return false;
+}
+
+namespace {
+
+class RewritesReceiver : public edit::EditsReceiver {
+ Rewriter &Rewrite;
+
+public:
+ RewritesReceiver(Rewriter &Rewrite) : Rewrite(Rewrite) { }
+
+ void insert(SourceLocation loc, StringRef text) override {
+ Rewrite.InsertText(loc, text);
+ }
+ void replace(CharSourceRange range, StringRef text) override {
+ Rewrite.ReplaceText(range.getBegin(), Rewrite.getRangeSize(range), text);
+ }
+};
+
+}
+
+bool FixItRewriter::WriteFixedFiles(
+ std::vector<std::pair<std::string, std::string> > *RewrittenFiles) {
+ if (NumFailures > 0 && !FixItOpts->FixWhatYouCan) {
+ Diag(FullSourceLoc(), diag::warn_fixit_no_changes);
+ return true;
+ }
+
+ RewritesReceiver Rec(Rewrite);
+ Editor.applyRewrites(Rec);
+
+ for (iterator I = buffer_begin(), E = buffer_end(); I != E; ++I) {
+ const FileEntry *Entry = Rewrite.getSourceMgr().getFileEntryForID(I->first);
+ int fd;
+ std::string Filename = FixItOpts->RewriteFilename(Entry->getName(), fd);
+ std::error_code EC;
+ std::unique_ptr<llvm::raw_fd_ostream> OS;
+ if (fd != -1) {
+ OS.reset(new llvm::raw_fd_ostream(fd, /*shouldClose=*/true));
+ } else {
+ OS.reset(new llvm::raw_fd_ostream(Filename, EC, llvm::sys::fs::F_None));
+ }
+ if (EC) {
+ Diags.Report(clang::diag::err_fe_unable_to_open_output) << Filename
+ << EC.message();
+ continue;
+ }
+ RewriteBuffer &RewriteBuf = I->second;
+ RewriteBuf.write(*OS);
+ OS->flush();
+
+ if (RewrittenFiles)
+ RewrittenFiles->push_back(std::make_pair(Entry->getName(), Filename));
+ }
+
+ return false;
+}
+
+bool FixItRewriter::IncludeInDiagnosticCounts() const {
+ return Client ? Client->IncludeInDiagnosticCounts() : true;
+}
+
+void FixItRewriter::HandleDiagnostic(DiagnosticsEngine::Level DiagLevel,
+ const Diagnostic &Info) {
+ // Default implementation (Warnings/errors count).
+ DiagnosticConsumer::HandleDiagnostic(DiagLevel, Info);
+
+ if (!FixItOpts->Silent ||
+ DiagLevel >= DiagnosticsEngine::Error ||
+ (DiagLevel == DiagnosticsEngine::Note && !PrevDiagSilenced) ||
+ (DiagLevel > DiagnosticsEngine::Note && Info.getNumFixItHints())) {
+ Client->HandleDiagnostic(DiagLevel, Info);
+ PrevDiagSilenced = false;
+ } else {
+ PrevDiagSilenced = true;
+ }
+
+ // Skip over any diagnostics that are ignored or notes.
+ if (DiagLevel <= DiagnosticsEngine::Note)
+ return;
+ // Skip over errors if we are only fixing warnings.
+ if (DiagLevel >= DiagnosticsEngine::Error && FixItOpts->FixOnlyWarnings) {
+ ++NumFailures;
+ return;
+ }
+
+ // Make sure that we can perform all of the modifications we
+ // in this diagnostic.
+ edit::Commit commit(Editor);
+ for (unsigned Idx = 0, Last = Info.getNumFixItHints();
+ Idx < Last; ++Idx) {
+ const FixItHint &Hint = Info.getFixItHint(Idx);
+
+ if (Hint.CodeToInsert.empty()) {
+ if (Hint.InsertFromRange.isValid())
+ commit.insertFromRange(Hint.RemoveRange.getBegin(),
+ Hint.InsertFromRange, /*afterToken=*/false,
+ Hint.BeforePreviousInsertions);
+ else
+ commit.remove(Hint.RemoveRange);
+ } else {
+ if (Hint.RemoveRange.isTokenRange() ||
+ Hint.RemoveRange.getBegin() != Hint.RemoveRange.getEnd())
+ commit.replace(Hint.RemoveRange, Hint.CodeToInsert);
+ else
+ commit.insert(Hint.RemoveRange.getBegin(), Hint.CodeToInsert,
+ /*afterToken=*/false, Hint.BeforePreviousInsertions);
+ }
+ }
+ bool CanRewrite = Info.getNumFixItHints() > 0 && commit.isCommitable();
+
+ if (!CanRewrite) {
+ if (Info.getNumFixItHints() > 0)
+ Diag(Info.getLocation(), diag::note_fixit_in_macro);
+
+ // If this was an error, refuse to perform any rewriting.
+ if (DiagLevel >= DiagnosticsEngine::Error) {
+ if (++NumFailures == 1)
+ Diag(Info.getLocation(), diag::note_fixit_unfixed_error);
+ }
+ return;
+ }
+
+ if (!Editor.commit(commit)) {
+ ++NumFailures;
+ Diag(Info.getLocation(), diag::note_fixit_failed);
+ return;
+ }
+
+ Diag(Info.getLocation(), diag::note_fixit_applied);
+}
+
+/// \brief Emit a diagnostic via the adapted diagnostic client.
+void FixItRewriter::Diag(SourceLocation Loc, unsigned DiagID) {
+ // When producing this diagnostic, we temporarily bypass ourselves,
+ // clear out any current diagnostic, and let the downstream client
+ // format the diagnostic.
+ Diags.setClient(Client, false);
+ Diags.Clear();
+ Diags.Report(Loc, DiagID);
+ Diags.setClient(this, false);
+}
+
+FixItOptions::~FixItOptions() {}
diff --git a/lib/Frontend/Rewrite/FrontendActions.cpp b/lib/Frontend/Rewrite/FrontendActions.cpp
new file mode 100644
index 0000000..1b5eb28
--- /dev/null
+++ b/lib/Frontend/Rewrite/FrontendActions.cpp
@@ -0,0 +1,196 @@
+//===--- FrontendActions.cpp ----------------------------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Rewrite/Frontend/FrontendActions.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Frontend/CompilerInstance.h"
+#include "clang/Frontend/FrontendActions.h"
+#include "clang/Frontend/FrontendDiagnostic.h"
+#include "clang/Frontend/Utils.h"
+#include "clang/Lex/Preprocessor.h"
+#include "clang/Parse/Parser.h"
+#include "clang/Rewrite/Frontend/ASTConsumers.h"
+#include "clang/Rewrite/Frontend/FixItRewriter.h"
+#include "clang/Rewrite/Frontend/Rewriters.h"
+#include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/raw_ostream.h"
+#include <memory>
+
+using namespace clang;
+
+//===----------------------------------------------------------------------===//
+// AST Consumer Actions
+//===----------------------------------------------------------------------===//
+
+std::unique_ptr<ASTConsumer>
+HTMLPrintAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
+ if (raw_ostream *OS = CI.createDefaultOutputFile(false, InFile))
+ return CreateHTMLPrinter(OS, CI.getPreprocessor());
+ return nullptr;
+}
+
+FixItAction::FixItAction() {}
+FixItAction::~FixItAction() {}
+
+std::unique_ptr<ASTConsumer>
+FixItAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
+ return llvm::make_unique<ASTConsumer>();
+}
+
+namespace {
+class FixItRewriteInPlace : public FixItOptions {
+public:
+ std::string RewriteFilename(const std::string &Filename, int &fd) override {
+ fd = -1;
+ return Filename;
+ }
+};
+
+class FixItActionSuffixInserter : public FixItOptions {
+ std::string NewSuffix;
+
+public:
+ FixItActionSuffixInserter(std::string NewSuffix, bool FixWhatYouCan)
+ : NewSuffix(NewSuffix) {
+ this->FixWhatYouCan = FixWhatYouCan;
+ }
+
+ std::string RewriteFilename(const std::string &Filename, int &fd) override {
+ fd = -1;
+ SmallString<128> Path(Filename);
+ llvm::sys::path::replace_extension(Path,
+ NewSuffix + llvm::sys::path::extension(Path));
+ return Path.str();
+ }
+};
+
+class FixItRewriteToTemp : public FixItOptions {
+public:
+ std::string RewriteFilename(const std::string &Filename, int &fd) override {
+ SmallString<128> Path;
+ llvm::sys::fs::createTemporaryFile(llvm::sys::path::filename(Filename),
+ llvm::sys::path::extension(Filename), fd,
+ Path);
+ return Path.str();
+ }
+};
+} // end anonymous namespace
+
+bool FixItAction::BeginSourceFileAction(CompilerInstance &CI,
+ StringRef Filename) {
+ const FrontendOptions &FEOpts = getCompilerInstance().getFrontendOpts();
+ if (!FEOpts.FixItSuffix.empty()) {
+ FixItOpts.reset(new FixItActionSuffixInserter(FEOpts.FixItSuffix,
+ FEOpts.FixWhatYouCan));
+ } else {
+ FixItOpts.reset(new FixItRewriteInPlace);
+ FixItOpts->FixWhatYouCan = FEOpts.FixWhatYouCan;
+ }
+ Rewriter.reset(new FixItRewriter(CI.getDiagnostics(), CI.getSourceManager(),
+ CI.getLangOpts(), FixItOpts.get()));
+ return true;
+}
+
+void FixItAction::EndSourceFileAction() {
+ // Otherwise rewrite all files.
+ Rewriter->WriteFixedFiles();
+}
+
+bool FixItRecompile::BeginInvocation(CompilerInstance &CI) {
+
+ std::vector<std::pair<std::string, std::string> > RewrittenFiles;
+ bool err = false;
+ {
+ const FrontendOptions &FEOpts = CI.getFrontendOpts();
+ std::unique_ptr<FrontendAction> FixAction(new SyntaxOnlyAction());
+ if (FixAction->BeginSourceFile(CI, FEOpts.Inputs[0])) {
+ std::unique_ptr<FixItOptions> FixItOpts;
+ if (FEOpts.FixToTemporaries)
+ FixItOpts.reset(new FixItRewriteToTemp());
+ else
+ FixItOpts.reset(new FixItRewriteInPlace());
+ FixItOpts->Silent = true;
+ FixItOpts->FixWhatYouCan = FEOpts.FixWhatYouCan;
+ FixItOpts->FixOnlyWarnings = FEOpts.FixOnlyWarnings;
+ FixItRewriter Rewriter(CI.getDiagnostics(), CI.getSourceManager(),
+ CI.getLangOpts(), FixItOpts.get());
+ FixAction->Execute();
+
+ err = Rewriter.WriteFixedFiles(&RewrittenFiles);
+
+ FixAction->EndSourceFile();
+ CI.setSourceManager(nullptr);
+ CI.setFileManager(nullptr);
+ } else {
+ err = true;
+ }
+ }
+ if (err)
+ return false;
+ CI.getDiagnosticClient().clear();
+ CI.getDiagnostics().Reset();
+
+ PreprocessorOptions &PPOpts = CI.getPreprocessorOpts();
+ PPOpts.RemappedFiles.insert(PPOpts.RemappedFiles.end(),
+ RewrittenFiles.begin(), RewrittenFiles.end());
+ PPOpts.RemappedFilesKeepOriginalName = false;
+
+ return true;
+}
+
+#ifdef CLANG_ENABLE_OBJC_REWRITER
+
+std::unique_ptr<ASTConsumer>
+RewriteObjCAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
+ if (raw_ostream *OS = CI.createDefaultOutputFile(false, InFile, "cpp")) {
+ if (CI.getLangOpts().ObjCRuntime.isNonFragile())
+ return CreateModernObjCRewriter(InFile, OS,
+ CI.getDiagnostics(), CI.getLangOpts(),
+ CI.getDiagnosticOpts().NoRewriteMacros,
+ (CI.getCodeGenOpts().getDebugInfo() !=
+ CodeGenOptions::NoDebugInfo));
+ return CreateObjCRewriter(InFile, OS,
+ CI.getDiagnostics(), CI.getLangOpts(),
+ CI.getDiagnosticOpts().NoRewriteMacros);
+ }
+ return nullptr;
+}
+
+#endif
+
+//===----------------------------------------------------------------------===//
+// Preprocessor Actions
+//===----------------------------------------------------------------------===//
+
+void RewriteMacrosAction::ExecuteAction() {
+ CompilerInstance &CI = getCompilerInstance();
+ raw_ostream *OS = CI.createDefaultOutputFile(true, getCurrentFile());
+ if (!OS) return;
+
+ RewriteMacrosInInput(CI.getPreprocessor(), OS);
+}
+
+void RewriteTestAction::ExecuteAction() {
+ CompilerInstance &CI = getCompilerInstance();
+ raw_ostream *OS = CI.createDefaultOutputFile(false, getCurrentFile());
+ if (!OS) return;
+
+ DoRewriteTest(CI.getPreprocessor(), OS);
+}
+
+void RewriteIncludesAction::ExecuteAction() {
+ CompilerInstance &CI = getCompilerInstance();
+ raw_ostream *OS = CI.createDefaultOutputFile(true, getCurrentFile());
+ if (!OS) return;
+
+ RewriteIncludesInInput(CI.getPreprocessor(), OS,
+ CI.getPreprocessorOutputOpts());
+}
diff --git a/lib/Frontend/Rewrite/HTMLPrint.cpp b/lib/Frontend/Rewrite/HTMLPrint.cpp
new file mode 100644
index 0000000..22ccfe6
--- /dev/null
+++ b/lib/Frontend/Rewrite/HTMLPrint.cpp
@@ -0,0 +1,95 @@
+//===--- HTMLPrint.cpp - Source code -> HTML pretty-printing --------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Pretty-printing of source code to HTML.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Rewrite/Frontend/ASTConsumers.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/Decl.h"
+#include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/FileManager.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Lex/Preprocessor.h"
+#include "clang/Rewrite/Core/HTMLRewrite.h"
+#include "clang/Rewrite/Core/Rewriter.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace clang;
+
+//===----------------------------------------------------------------------===//
+// Functional HTML pretty-printing.
+//===----------------------------------------------------------------------===//
+
+namespace {
+ class HTMLPrinter : public ASTConsumer {
+ Rewriter R;
+ raw_ostream *Out;
+ Preprocessor &PP;
+ bool SyntaxHighlight, HighlightMacros;
+
+ public:
+ HTMLPrinter(raw_ostream *OS, Preprocessor &pp,
+ bool _SyntaxHighlight, bool _HighlightMacros)
+ : Out(OS), PP(pp), SyntaxHighlight(_SyntaxHighlight),
+ HighlightMacros(_HighlightMacros) {}
+
+ void Initialize(ASTContext &context) override;
+ void HandleTranslationUnit(ASTContext &Ctx) override;
+ };
+}
+
+std::unique_ptr<ASTConsumer> clang::CreateHTMLPrinter(raw_ostream *OS,
+ Preprocessor &PP,
+ bool SyntaxHighlight,
+ bool HighlightMacros) {
+ return llvm::make_unique<HTMLPrinter>(OS, PP, SyntaxHighlight,
+ HighlightMacros);
+}
+
+void HTMLPrinter::Initialize(ASTContext &context) {
+ R.setSourceMgr(context.getSourceManager(), context.getLangOpts());
+}
+
+void HTMLPrinter::HandleTranslationUnit(ASTContext &Ctx) {
+ if (PP.getDiagnostics().hasErrorOccurred())
+ return;
+
+ // Format the file.
+ FileID FID = R.getSourceMgr().getMainFileID();
+ const FileEntry* Entry = R.getSourceMgr().getFileEntryForID(FID);
+ const char* Name;
+ // In some cases, in particular the case where the input is from stdin,
+ // there is no entry. Fall back to the memory buffer for a name in those
+ // cases.
+ if (Entry)
+ Name = Entry->getName();
+ else
+ Name = R.getSourceMgr().getBuffer(FID)->getBufferIdentifier();
+
+ html::AddLineNumbers(R, FID);
+ html::AddHeaderFooterInternalBuiltinCSS(R, FID, Name);
+
+ // If we have a preprocessor, relex the file and syntax highlight.
+ // We might not have a preprocessor if we come from a deserialized AST file,
+ // for example.
+
+ if (SyntaxHighlight) html::SyntaxHighlight(R, FID, PP);
+ if (HighlightMacros) html::HighlightMacros(R, FID, PP);
+ html::EscapeText(R, FID, false, true);
+
+ // Emit the HTML.
+ const RewriteBuffer &RewriteBuf = R.getEditBuffer(FID);
+ char *Buffer = (char*)malloc(RewriteBuf.size());
+ std::copy(RewriteBuf.begin(), RewriteBuf.end(), Buffer);
+ Out->write(Buffer, RewriteBuf.size());
+ free(Buffer);
+}
diff --git a/lib/Frontend/Rewrite/InclusionRewriter.cpp b/lib/Frontend/Rewrite/InclusionRewriter.cpp
new file mode 100644
index 0000000..1400557
--- /dev/null
+++ b/lib/Frontend/Rewrite/InclusionRewriter.cpp
@@ -0,0 +1,588 @@
+//===--- InclusionRewriter.cpp - Rewrite includes into their expansions ---===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This code rewrites include invocations into their expansions. This gives you
+// a file with all included files merged into it.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Rewrite/Frontend/Rewriters.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Frontend/PreprocessorOutputOptions.h"
+#include "clang/Lex/HeaderSearch.h"
+#include "clang/Lex/Pragma.h"
+#include "clang/Lex/Preprocessor.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Support/raw_ostream.h"
+
+using namespace clang;
+using namespace llvm;
+
+namespace {
+
+class InclusionRewriter : public PPCallbacks {
+ /// Information about which #includes were actually performed,
+ /// created by preprocessor callbacks.
+ struct FileChange {
+ const Module *Mod;
+ SourceLocation From;
+ FileID Id;
+ SrcMgr::CharacteristicKind FileType;
+ FileChange(SourceLocation From, const Module *Mod) : Mod(Mod), From(From) {
+ }
+ };
+ Preprocessor &PP; ///< Used to find inclusion directives.
+ SourceManager &SM; ///< Used to read and manage source files.
+ raw_ostream &OS; ///< The destination stream for rewritten contents.
+ StringRef MainEOL; ///< The line ending marker to use.
+ const llvm::MemoryBuffer *PredefinesBuffer; ///< The preprocessor predefines.
+ bool ShowLineMarkers; ///< Show #line markers.
+ bool UseLineDirective; ///< Use of line directives or line markers.
+ typedef std::map<unsigned, FileChange> FileChangeMap;
+ FileChangeMap FileChanges; ///< Tracks which files were included where.
+ /// Used transitively for building up the FileChanges mapping over the
+ /// various \c PPCallbacks callbacks.
+ FileChangeMap::iterator LastInsertedFileChange;
+public:
+ InclusionRewriter(Preprocessor &PP, raw_ostream &OS, bool ShowLineMarkers);
+ bool Process(FileID FileId, SrcMgr::CharacteristicKind FileType);
+ void setPredefinesBuffer(const llvm::MemoryBuffer *Buf) {
+ PredefinesBuffer = Buf;
+ }
+ void detectMainFileEOL();
+private:
+ void FileChanged(SourceLocation Loc, FileChangeReason Reason,
+ SrcMgr::CharacteristicKind FileType,
+ FileID PrevFID) override;
+ void FileSkipped(const FileEntry &ParentFile, const Token &FilenameTok,
+ SrcMgr::CharacteristicKind FileType) override;
+ void InclusionDirective(SourceLocation HashLoc, const Token &IncludeTok,
+ StringRef FileName, bool IsAngled,
+ CharSourceRange FilenameRange, const FileEntry *File,
+ StringRef SearchPath, StringRef RelativePath,
+ const Module *Imported) override;
+ void WriteLineInfo(const char *Filename, int Line,
+ SrcMgr::CharacteristicKind FileType,
+ StringRef Extra = StringRef());
+ void WriteImplicitModuleImport(const Module *Mod);
+ void OutputContentUpTo(const MemoryBuffer &FromFile,
+ unsigned &WriteFrom, unsigned WriteTo,
+ StringRef EOL, int &lines,
+ bool EnsureNewline);
+ void CommentOutDirective(Lexer &DirectivesLex, const Token &StartToken,
+ const MemoryBuffer &FromFile, StringRef EOL,
+ unsigned &NextToWrite, int &Lines);
+ bool HandleHasInclude(FileID FileId, Lexer &RawLex,
+ const DirectoryLookup *Lookup, Token &Tok,
+ bool &FileExists);
+ const FileChange *FindFileChangeLocation(SourceLocation Loc) const;
+ StringRef NextIdentifierName(Lexer &RawLex, Token &RawToken);
+};
+
+} // end anonymous namespace
+
+/// Initializes an InclusionRewriter with a \p PP source and \p OS destination.
+InclusionRewriter::InclusionRewriter(Preprocessor &PP, raw_ostream &OS,
+ bool ShowLineMarkers)
+ : PP(PP), SM(PP.getSourceManager()), OS(OS), MainEOL("\n"),
+ PredefinesBuffer(nullptr), ShowLineMarkers(ShowLineMarkers),
+ LastInsertedFileChange(FileChanges.end()) {
+ // If we're in microsoft mode, use normal #line instead of line markers.
+ UseLineDirective = PP.getLangOpts().MicrosoftExt;
+}
+
+/// Write appropriate line information as either #line directives or GNU line
+/// markers depending on what mode we're in, including the \p Filename and
+/// \p Line we are located at, using the specified \p EOL line separator, and
+/// any \p Extra context specifiers in GNU line directives.
+void InclusionRewriter::WriteLineInfo(const char *Filename, int Line,
+ SrcMgr::CharacteristicKind FileType,
+ StringRef Extra) {
+ if (!ShowLineMarkers)
+ return;
+ if (UseLineDirective) {
+ OS << "#line" << ' ' << Line << ' ' << '"';
+ OS.write_escaped(Filename);
+ OS << '"';
+ } else {
+ // Use GNU linemarkers as described here:
+ // http://gcc.gnu.org/onlinedocs/cpp/Preprocessor-Output.html
+ OS << '#' << ' ' << Line << ' ' << '"';
+ OS.write_escaped(Filename);
+ OS << '"';
+ if (!Extra.empty())
+ OS << Extra;
+ if (FileType == SrcMgr::C_System)
+ // "`3' This indicates that the following text comes from a system header
+ // file, so certain warnings should be suppressed."
+ OS << " 3";
+ else if (FileType == SrcMgr::C_ExternCSystem)
+ // as above for `3', plus "`4' This indicates that the following text
+ // should be treated as being wrapped in an implicit extern "C" block."
+ OS << " 3 4";
+ }
+ OS << MainEOL;
+}
+
+void InclusionRewriter::WriteImplicitModuleImport(const Module *Mod) {
+ OS << "@import " << Mod->getFullModuleName() << ";"
+ << " /* clang -frewrite-includes: implicit import */" << MainEOL;
+}
+
+/// FileChanged - Whenever the preprocessor enters or exits a #include file
+/// it invokes this handler.
+void InclusionRewriter::FileChanged(SourceLocation Loc,
+ FileChangeReason Reason,
+ SrcMgr::CharacteristicKind NewFileType,
+ FileID) {
+ if (Reason != EnterFile)
+ return;
+ if (LastInsertedFileChange == FileChanges.end())
+ // we didn't reach this file (eg: the main file) via an inclusion directive
+ return;
+ LastInsertedFileChange->second.Id = FullSourceLoc(Loc, SM).getFileID();
+ LastInsertedFileChange->second.FileType = NewFileType;
+ LastInsertedFileChange = FileChanges.end();
+}
+
+/// Called whenever an inclusion is skipped due to canonical header protection
+/// macros.
+void InclusionRewriter::FileSkipped(const FileEntry &/*ParentFile*/,
+ const Token &/*FilenameTok*/,
+ SrcMgr::CharacteristicKind /*FileType*/) {
+ assert(LastInsertedFileChange != FileChanges.end() && "A file, that wasn't "
+ "found via an inclusion directive, was skipped");
+ FileChanges.erase(LastInsertedFileChange);
+ LastInsertedFileChange = FileChanges.end();
+}
+
+/// This should be called whenever the preprocessor encounters include
+/// directives. It does not say whether the file has been included, but it
+/// provides more information about the directive (hash location instead
+/// of location inside the included file). It is assumed that the matching
+/// FileChanged() or FileSkipped() is called after this.
+void InclusionRewriter::InclusionDirective(SourceLocation HashLoc,
+ const Token &/*IncludeTok*/,
+ StringRef /*FileName*/,
+ bool /*IsAngled*/,
+ CharSourceRange /*FilenameRange*/,
+ const FileEntry * /*File*/,
+ StringRef /*SearchPath*/,
+ StringRef /*RelativePath*/,
+ const Module *Imported) {
+ assert(LastInsertedFileChange == FileChanges.end() && "Another inclusion "
+ "directive was found before the previous one was processed");
+ std::pair<FileChangeMap::iterator, bool> p = FileChanges.insert(
+ std::make_pair(HashLoc.getRawEncoding(), FileChange(HashLoc, Imported)));
+ assert(p.second && "Unexpected revisitation of the same include directive");
+ if (!Imported)
+ LastInsertedFileChange = p.first;
+}
+
+/// Simple lookup for a SourceLocation (specifically one denoting the hash in
+/// an inclusion directive) in the map of inclusion information, FileChanges.
+const InclusionRewriter::FileChange *
+InclusionRewriter::FindFileChangeLocation(SourceLocation Loc) const {
+ FileChangeMap::const_iterator I = FileChanges.find(Loc.getRawEncoding());
+ if (I != FileChanges.end())
+ return &I->second;
+ return nullptr;
+}
+
+/// Detect the likely line ending style of \p FromFile by examining the first
+/// newline found within it.
+static StringRef DetectEOL(const MemoryBuffer &FromFile) {
+ // Detect what line endings the file uses, so that added content does not mix
+ // the style. We need to check for "\r\n" first because "\n\r" will match
+ // "\r\n\r\n".
+ const char *Pos = strchr(FromFile.getBufferStart(), '\n');
+ if (!Pos)
+ return "\n";
+ if (Pos - 1 >= FromFile.getBufferStart() && Pos[-1] == '\r')
+ return "\r\n";
+ if (Pos + 1 < FromFile.getBufferEnd() && Pos[1] == '\r')
+ return "\n\r";
+ return "\n";
+}
+
+void InclusionRewriter::detectMainFileEOL() {
+ bool Invalid;
+ const MemoryBuffer &FromFile = *SM.getBuffer(SM.getMainFileID(), &Invalid);
+ assert(!Invalid);
+ if (Invalid)
+ return; // Should never happen, but whatever.
+ MainEOL = DetectEOL(FromFile);
+}
+
+/// Writes out bytes from \p FromFile, starting at \p NextToWrite and ending at
+/// \p WriteTo - 1.
+void InclusionRewriter::OutputContentUpTo(const MemoryBuffer &FromFile,
+ unsigned &WriteFrom, unsigned WriteTo,
+ StringRef LocalEOL, int &Line,
+ bool EnsureNewline) {
+ if (WriteTo <= WriteFrom)
+ return;
+ if (&FromFile == PredefinesBuffer) {
+ // Ignore the #defines of the predefines buffer.
+ WriteFrom = WriteTo;
+ return;
+ }
+
+ // If we would output half of a line ending, advance one character to output
+ // the whole line ending. All buffers are null terminated, so looking ahead
+ // one byte is safe.
+ if (LocalEOL.size() == 2 &&
+ LocalEOL[0] == (FromFile.getBufferStart() + WriteTo)[-1] &&
+ LocalEOL[1] == (FromFile.getBufferStart() + WriteTo)[0])
+ WriteTo++;
+
+ StringRef TextToWrite(FromFile.getBufferStart() + WriteFrom,
+ WriteTo - WriteFrom);
+
+ if (MainEOL == LocalEOL) {
+ OS << TextToWrite;
+ // count lines manually, it's faster than getPresumedLoc()
+ Line += TextToWrite.count(LocalEOL);
+ if (EnsureNewline && !TextToWrite.endswith(LocalEOL))
+ OS << MainEOL;
+ } else {
+ // Output the file one line at a time, rewriting the line endings as we go.
+ StringRef Rest = TextToWrite;
+ while (!Rest.empty()) {
+ StringRef LineText;
+ std::tie(LineText, Rest) = Rest.split(LocalEOL);
+ OS << LineText;
+ Line++;
+ if (!Rest.empty())
+ OS << MainEOL;
+ }
+ if (TextToWrite.endswith(LocalEOL) || EnsureNewline)
+ OS << MainEOL;
+ }
+ WriteFrom = WriteTo;
+}
+
+/// Print characters from \p FromFile starting at \p NextToWrite up until the
+/// inclusion directive at \p StartToken, then print out the inclusion
+/// inclusion directive disabled by a #if directive, updating \p NextToWrite
+/// and \p Line to track the number of source lines visited and the progress
+/// through the \p FromFile buffer.
+void InclusionRewriter::CommentOutDirective(Lexer &DirectiveLex,
+ const Token &StartToken,
+ const MemoryBuffer &FromFile,
+ StringRef LocalEOL,
+ unsigned &NextToWrite, int &Line) {
+ OutputContentUpTo(FromFile, NextToWrite,
+ SM.getFileOffset(StartToken.getLocation()), LocalEOL, Line,
+ false);
+ Token DirectiveToken;
+ do {
+ DirectiveLex.LexFromRawLexer(DirectiveToken);
+ } while (!DirectiveToken.is(tok::eod) && DirectiveToken.isNot(tok::eof));
+ if (&FromFile == PredefinesBuffer) {
+ // OutputContentUpTo() would not output anything anyway.
+ return;
+ }
+ OS << "#if 0 /* expanded by -frewrite-includes */" << MainEOL;
+ OutputContentUpTo(FromFile, NextToWrite,
+ SM.getFileOffset(DirectiveToken.getLocation()) +
+ DirectiveToken.getLength(),
+ LocalEOL, Line, true);
+ OS << "#endif /* expanded by -frewrite-includes */" << MainEOL;
+}
+
+/// Find the next identifier in the pragma directive specified by \p RawToken.
+StringRef InclusionRewriter::NextIdentifierName(Lexer &RawLex,
+ Token &RawToken) {
+ RawLex.LexFromRawLexer(RawToken);
+ if (RawToken.is(tok::raw_identifier))
+ PP.LookUpIdentifierInfo(RawToken);
+ if (RawToken.is(tok::identifier))
+ return RawToken.getIdentifierInfo()->getName();
+ return StringRef();
+}
+
+// Expand __has_include and __has_include_next if possible. If there's no
+// definitive answer return false.
+bool InclusionRewriter::HandleHasInclude(
+ FileID FileId, Lexer &RawLex, const DirectoryLookup *Lookup, Token &Tok,
+ bool &FileExists) {
+ // Lex the opening paren.
+ RawLex.LexFromRawLexer(Tok);
+ if (Tok.isNot(tok::l_paren))
+ return false;
+
+ RawLex.LexFromRawLexer(Tok);
+
+ SmallString<128> FilenameBuffer;
+ StringRef Filename;
+ // Since the raw lexer doesn't give us angle_literals we have to parse them
+ // ourselves.
+ // FIXME: What to do if the file name is a macro?
+ if (Tok.is(tok::less)) {
+ RawLex.LexFromRawLexer(Tok);
+
+ FilenameBuffer += '<';
+ do {
+ if (Tok.is(tok::eod)) // Sanity check.
+ return false;
+
+ if (Tok.is(tok::raw_identifier))
+ PP.LookUpIdentifierInfo(Tok);
+
+ // Get the string piece.
+ SmallVector<char, 128> TmpBuffer;
+ bool Invalid = false;
+ StringRef TmpName = PP.getSpelling(Tok, TmpBuffer, &Invalid);
+ if (Invalid)
+ return false;
+
+ FilenameBuffer += TmpName;
+
+ RawLex.LexFromRawLexer(Tok);
+ } while (Tok.isNot(tok::greater));
+
+ FilenameBuffer += '>';
+ Filename = FilenameBuffer;
+ } else {
+ if (Tok.isNot(tok::string_literal))
+ return false;
+
+ bool Invalid = false;
+ Filename = PP.getSpelling(Tok, FilenameBuffer, &Invalid);
+ if (Invalid)
+ return false;
+ }
+
+ // Lex the closing paren.
+ RawLex.LexFromRawLexer(Tok);
+ if (Tok.isNot(tok::r_paren))
+ return false;
+
+ // Now ask HeaderInfo if it knows about the header.
+ // FIXME: Subframeworks aren't handled here. Do we care?
+ bool isAngled = PP.GetIncludeFilenameSpelling(Tok.getLocation(), Filename);
+ const DirectoryLookup *CurDir;
+ const FileEntry *FileEnt = PP.getSourceManager().getFileEntryForID(FileId);
+ SmallVector<std::pair<const FileEntry *, const DirectoryEntry *>, 1>
+ Includers;
+ Includers.push_back(std::make_pair(FileEnt, FileEnt->getDir()));
+ const FileEntry *File = PP.getHeaderSearchInfo().LookupFile(
+ Filename, SourceLocation(), isAngled, nullptr, CurDir, Includers, nullptr,
+ nullptr, nullptr, false);
+
+ FileExists = File != nullptr;
+ return true;
+}
+
+/// Use a raw lexer to analyze \p FileId, incrementally copying parts of it
+/// and including content of included files recursively.
+bool InclusionRewriter::Process(FileID FileId,
+ SrcMgr::CharacteristicKind FileType)
+{
+ bool Invalid;
+ const MemoryBuffer &FromFile = *SM.getBuffer(FileId, &Invalid);
+ if (Invalid) // invalid inclusion
+ return false;
+ const char *FileName = FromFile.getBufferIdentifier();
+ Lexer RawLex(FileId, &FromFile, PP.getSourceManager(), PP.getLangOpts());
+ RawLex.SetCommentRetentionState(false);
+
+ StringRef LocalEOL = DetectEOL(FromFile);
+
+ // Per the GNU docs: "1" indicates entering a new file.
+ if (FileId == SM.getMainFileID() || FileId == PP.getPredefinesFileID())
+ WriteLineInfo(FileName, 1, FileType, "");
+ else
+ WriteLineInfo(FileName, 1, FileType, " 1");
+
+ if (SM.getFileIDSize(FileId) == 0)
+ return false;
+
+ // The next byte to be copied from the source file, which may be non-zero if
+ // the lexer handled a BOM.
+ unsigned NextToWrite = SM.getFileOffset(RawLex.getSourceLocation());
+ assert(SM.getLineNumber(FileId, NextToWrite) == 1);
+ int Line = 1; // The current input file line number.
+
+ Token RawToken;
+ RawLex.LexFromRawLexer(RawToken);
+
+ // TODO: Consider adding a switch that strips possibly unimportant content,
+ // such as comments, to reduce the size of repro files.
+ while (RawToken.isNot(tok::eof)) {
+ if (RawToken.is(tok::hash) && RawToken.isAtStartOfLine()) {
+ RawLex.setParsingPreprocessorDirective(true);
+ Token HashToken = RawToken;
+ RawLex.LexFromRawLexer(RawToken);
+ if (RawToken.is(tok::raw_identifier))
+ PP.LookUpIdentifierInfo(RawToken);
+ if (RawToken.getIdentifierInfo() != nullptr) {
+ switch (RawToken.getIdentifierInfo()->getPPKeywordID()) {
+ case tok::pp_include:
+ case tok::pp_include_next:
+ case tok::pp_import: {
+ CommentOutDirective(RawLex, HashToken, FromFile, LocalEOL, NextToWrite,
+ Line);
+ if (FileId != PP.getPredefinesFileID())
+ WriteLineInfo(FileName, Line - 1, FileType, "");
+ StringRef LineInfoExtra;
+ if (const FileChange *Change = FindFileChangeLocation(
+ HashToken.getLocation())) {
+ if (Change->Mod) {
+ WriteImplicitModuleImport(Change->Mod);
+
+ // else now include and recursively process the file
+ } else if (Process(Change->Id, Change->FileType)) {
+ // and set lineinfo back to this file, if the nested one was
+ // actually included
+ // `2' indicates returning to a file (after having included
+ // another file.
+ LineInfoExtra = " 2";
+ }
+ }
+ // fix up lineinfo (since commented out directive changed line
+ // numbers) for inclusions that were skipped due to header guards
+ WriteLineInfo(FileName, Line, FileType, LineInfoExtra);
+ break;
+ }
+ case tok::pp_pragma: {
+ StringRef Identifier = NextIdentifierName(RawLex, RawToken);
+ if (Identifier == "clang" || Identifier == "GCC") {
+ if (NextIdentifierName(RawLex, RawToken) == "system_header") {
+ // keep the directive in, commented out
+ CommentOutDirective(RawLex, HashToken, FromFile, LocalEOL,
+ NextToWrite, Line);
+ // update our own type
+ FileType = SM.getFileCharacteristic(RawToken.getLocation());
+ WriteLineInfo(FileName, Line, FileType);
+ }
+ } else if (Identifier == "once") {
+ // keep the directive in, commented out
+ CommentOutDirective(RawLex, HashToken, FromFile, LocalEOL,
+ NextToWrite, Line);
+ WriteLineInfo(FileName, Line, FileType);
+ }
+ break;
+ }
+ case tok::pp_if:
+ case tok::pp_elif: {
+ bool elif = (RawToken.getIdentifierInfo()->getPPKeywordID() ==
+ tok::pp_elif);
+ // Rewrite special builtin macros to avoid pulling in host details.
+ do {
+ // Walk over the directive.
+ RawLex.LexFromRawLexer(RawToken);
+ if (RawToken.is(tok::raw_identifier))
+ PP.LookUpIdentifierInfo(RawToken);
+
+ if (RawToken.is(tok::identifier)) {
+ bool HasFile;
+ SourceLocation Loc = RawToken.getLocation();
+
+ // Rewrite __has_include(x)
+ if (RawToken.getIdentifierInfo()->isStr("__has_include")) {
+ if (!HandleHasInclude(FileId, RawLex, nullptr, RawToken,
+ HasFile))
+ continue;
+ // Rewrite __has_include_next(x)
+ } else if (RawToken.getIdentifierInfo()->isStr(
+ "__has_include_next")) {
+ const DirectoryLookup *Lookup = PP.GetCurDirLookup();
+ if (Lookup)
+ ++Lookup;
+
+ if (!HandleHasInclude(FileId, RawLex, Lookup, RawToken,
+ HasFile))
+ continue;
+ } else {
+ continue;
+ }
+ // Replace the macro with (0) or (1), followed by the commented
+ // out macro for reference.
+ OutputContentUpTo(FromFile, NextToWrite, SM.getFileOffset(Loc),
+ LocalEOL, Line, false);
+ OS << '(' << (int) HasFile << ")/*";
+ OutputContentUpTo(FromFile, NextToWrite,
+ SM.getFileOffset(RawToken.getLocation()) +
+ RawToken.getLength(),
+ LocalEOL, Line, false);
+ OS << "*/";
+ }
+ } while (RawToken.isNot(tok::eod));
+ if (elif) {
+ OutputContentUpTo(FromFile, NextToWrite,
+ SM.getFileOffset(RawToken.getLocation()) +
+ RawToken.getLength(),
+ LocalEOL, Line, /*EnsureNewline=*/ true);
+ WriteLineInfo(FileName, Line, FileType);
+ }
+ break;
+ }
+ case tok::pp_endif:
+ case tok::pp_else: {
+ // We surround every #include by #if 0 to comment it out, but that
+ // changes line numbers. These are fixed up right after that, but
+ // the whole #include could be inside a preprocessor conditional
+ // that is not processed. So it is necessary to fix the line
+ // numbers one the next line after each #else/#endif as well.
+ RawLex.SetKeepWhitespaceMode(true);
+ do {
+ RawLex.LexFromRawLexer(RawToken);
+ } while (RawToken.isNot(tok::eod) && RawToken.isNot(tok::eof));
+ OutputContentUpTo(FromFile, NextToWrite,
+ SM.getFileOffset(RawToken.getLocation()) +
+ RawToken.getLength(),
+ LocalEOL, Line, /*EnsureNewline=*/ true);
+ WriteLineInfo(FileName, Line, FileType);
+ RawLex.SetKeepWhitespaceMode(false);
+ }
+ default:
+ break;
+ }
+ }
+ RawLex.setParsingPreprocessorDirective(false);
+ }
+ RawLex.LexFromRawLexer(RawToken);
+ }
+ OutputContentUpTo(FromFile, NextToWrite,
+ SM.getFileOffset(SM.getLocForEndOfFile(FileId)), LocalEOL,
+ Line, /*EnsureNewline=*/true);
+ return true;
+}
+
+/// InclusionRewriterInInput - Implement -frewrite-includes mode.
+void clang::RewriteIncludesInInput(Preprocessor &PP, raw_ostream *OS,
+ const PreprocessorOutputOptions &Opts) {
+ SourceManager &SM = PP.getSourceManager();
+ InclusionRewriter *Rewrite = new InclusionRewriter(PP, *OS,
+ Opts.ShowLineMarkers);
+ Rewrite->detectMainFileEOL();
+
+ PP.addPPCallbacks(std::unique_ptr<PPCallbacks>(Rewrite));
+ PP.IgnorePragmas();
+
+ // First let the preprocessor process the entire file and call callbacks.
+ // Callbacks will record which #include's were actually performed.
+ PP.EnterMainSourceFile();
+ Token Tok;
+ // Only preprocessor directives matter here, so disable macro expansion
+ // everywhere else as an optimization.
+ // TODO: It would be even faster if the preprocessor could be switched
+ // to a mode where it would parse only preprocessor directives and comments,
+ // nothing else matters for parsing or processing.
+ PP.SetMacroExpansionOnlyInDirectives();
+ do {
+ PP.Lex(Tok);
+ } while (Tok.isNot(tok::eof));
+ Rewrite->setPredefinesBuffer(SM.getBuffer(PP.getPredefinesFileID()));
+ Rewrite->Process(PP.getPredefinesFileID(), SrcMgr::C_User);
+ Rewrite->Process(SM.getMainFileID(), SrcMgr::C_User);
+ OS->flush();
+}
diff --git a/lib/Frontend/Rewrite/Makefile b/lib/Frontend/Rewrite/Makefile
new file mode 100644
index 0000000..1d56547
--- /dev/null
+++ b/lib/Frontend/Rewrite/Makefile
@@ -0,0 +1,22 @@
+##===- clang/lib/Rewrite/Makefile --------------------------*- Makefile -*-===##
+#
+# The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+#
+# This implements code transformation / rewriting facilities.
+#
+##===----------------------------------------------------------------------===##
+
+CLANG_LEVEL := ../../..
+LIBRARYNAME := clangRewriteFrontend
+
+include $(CLANG_LEVEL)/Makefile
+
+ifeq ($(ENABLE_CLANG_ARCMT),1)
+ CXX.Flags += -DCLANG_ENABLE_OBJC_REWRITER
+endif
+
diff --git a/lib/Frontend/Rewrite/RewriteMacros.cpp b/lib/Frontend/Rewrite/RewriteMacros.cpp
new file mode 100644
index 0000000..0d0a991
--- /dev/null
+++ b/lib/Frontend/Rewrite/RewriteMacros.cpp
@@ -0,0 +1,217 @@
+//===--- RewriteMacros.cpp - Rewrite macros into their expansions ---------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This code rewrites macro invocations into their expansions. This gives you
+// a macro expanded file that retains comments and #includes.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Rewrite/Frontend/Rewriters.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Lex/Preprocessor.h"
+#include "clang/Rewrite/Core/Rewriter.h"
+#include "llvm/Support/Path.h"
+#include "llvm/Support/raw_ostream.h"
+#include <cstdio>
+#include <memory>
+
+using namespace clang;
+
+/// isSameToken - Return true if the two specified tokens start have the same
+/// content.
+static bool isSameToken(Token &RawTok, Token &PPTok) {
+ // If two tokens have the same kind and the same identifier info, they are
+ // obviously the same.
+ if (PPTok.getKind() == RawTok.getKind() &&
+ PPTok.getIdentifierInfo() == RawTok.getIdentifierInfo())
+ return true;
+
+ // Otherwise, if they are different but have the same identifier info, they
+ // are also considered to be the same. This allows keywords and raw lexed
+ // identifiers with the same name to be treated the same.
+ if (PPTok.getIdentifierInfo() &&
+ PPTok.getIdentifierInfo() == RawTok.getIdentifierInfo())
+ return true;
+
+ return false;
+}
+
+
+/// GetNextRawTok - Return the next raw token in the stream, skipping over
+/// comments if ReturnComment is false.
+static const Token &GetNextRawTok(const std::vector<Token> &RawTokens,
+ unsigned &CurTok, bool ReturnComment) {
+ assert(CurTok < RawTokens.size() && "Overran eof!");
+
+ // If the client doesn't want comments and we have one, skip it.
+ if (!ReturnComment && RawTokens[CurTok].is(tok::comment))
+ ++CurTok;
+
+ return RawTokens[CurTok++];
+}
+
+
+/// LexRawTokensFromMainFile - Lets all the raw tokens from the main file into
+/// the specified vector.
+static void LexRawTokensFromMainFile(Preprocessor &PP,
+ std::vector<Token> &RawTokens) {
+ SourceManager &SM = PP.getSourceManager();
+
+ // Create a lexer to lex all the tokens of the main file in raw mode. Even
+ // though it is in raw mode, it will not return comments.
+ const llvm::MemoryBuffer *FromFile = SM.getBuffer(SM.getMainFileID());
+ Lexer RawLex(SM.getMainFileID(), FromFile, SM, PP.getLangOpts());
+
+ // Switch on comment lexing because we really do want them.
+ RawLex.SetCommentRetentionState(true);
+
+ Token RawTok;
+ do {
+ RawLex.LexFromRawLexer(RawTok);
+
+ // If we have an identifier with no identifier info for our raw token, look
+ // up the indentifier info. This is important for equality comparison of
+ // identifier tokens.
+ if (RawTok.is(tok::raw_identifier))
+ PP.LookUpIdentifierInfo(RawTok);
+
+ RawTokens.push_back(RawTok);
+ } while (RawTok.isNot(tok::eof));
+}
+
+
+/// RewriteMacrosInInput - Implement -rewrite-macros mode.
+void clang::RewriteMacrosInInput(Preprocessor &PP, raw_ostream *OS) {
+ SourceManager &SM = PP.getSourceManager();
+
+ Rewriter Rewrite;
+ Rewrite.setSourceMgr(SM, PP.getLangOpts());
+ RewriteBuffer &RB = Rewrite.getEditBuffer(SM.getMainFileID());
+
+ std::vector<Token> RawTokens;
+ LexRawTokensFromMainFile(PP, RawTokens);
+ unsigned CurRawTok = 0;
+ Token RawTok = GetNextRawTok(RawTokens, CurRawTok, false);
+
+
+ // Get the first preprocessing token.
+ PP.EnterMainSourceFile();
+ Token PPTok;
+ PP.Lex(PPTok);
+
+ // Preprocess the input file in parallel with raw lexing the main file. Ignore
+ // all tokens that are preprocessed from a file other than the main file (e.g.
+ // a header). If we see tokens that are in the preprocessed file but not the
+ // lexed file, we have a macro expansion. If we see tokens in the lexed file
+ // that aren't in the preprocessed view, we have macros that expand to no
+ // tokens, or macro arguments etc.
+ while (RawTok.isNot(tok::eof) || PPTok.isNot(tok::eof)) {
+ SourceLocation PPLoc = SM.getExpansionLoc(PPTok.getLocation());
+
+ // If PPTok is from a different source file, ignore it.
+ if (!SM.isWrittenInMainFile(PPLoc)) {
+ PP.Lex(PPTok);
+ continue;
+ }
+
+ // If the raw file hits a preprocessor directive, they will be extra tokens
+ // in the raw file that don't exist in the preprocsesed file. However, we
+ // choose to preserve them in the output file and otherwise handle them
+ // specially.
+ if (RawTok.is(tok::hash) && RawTok.isAtStartOfLine()) {
+ // If this is a #warning directive or #pragma mark (GNU extensions),
+ // comment the line out.
+ if (RawTokens[CurRawTok].is(tok::identifier)) {
+ const IdentifierInfo *II = RawTokens[CurRawTok].getIdentifierInfo();
+ if (II->getName() == "warning") {
+ // Comment out #warning.
+ RB.InsertTextAfter(SM.getFileOffset(RawTok.getLocation()), "//");
+ } else if (II->getName() == "pragma" &&
+ RawTokens[CurRawTok+1].is(tok::identifier) &&
+ (RawTokens[CurRawTok+1].getIdentifierInfo()->getName() ==
+ "mark")) {
+ // Comment out #pragma mark.
+ RB.InsertTextAfter(SM.getFileOffset(RawTok.getLocation()), "//");
+ }
+ }
+
+ // Otherwise, if this is a #include or some other directive, just leave it
+ // in the file by skipping over the line.
+ RawTok = GetNextRawTok(RawTokens, CurRawTok, false);
+ while (!RawTok.isAtStartOfLine() && RawTok.isNot(tok::eof))
+ RawTok = GetNextRawTok(RawTokens, CurRawTok, false);
+ continue;
+ }
+
+ // Okay, both tokens are from the same file. Get their offsets from the
+ // start of the file.
+ unsigned PPOffs = SM.getFileOffset(PPLoc);
+ unsigned RawOffs = SM.getFileOffset(RawTok.getLocation());
+
+ // If the offsets are the same and the token kind is the same, ignore them.
+ if (PPOffs == RawOffs && isSameToken(RawTok, PPTok)) {
+ RawTok = GetNextRawTok(RawTokens, CurRawTok, false);
+ PP.Lex(PPTok);
+ continue;
+ }
+
+ // If the PP token is farther along than the raw token, something was
+ // deleted. Comment out the raw token.
+ if (RawOffs <= PPOffs) {
+ // Comment out a whole run of tokens instead of bracketing each one with
+ // comments. Add a leading space if RawTok didn't have one.
+ bool HasSpace = RawTok.hasLeadingSpace();
+ RB.InsertTextAfter(RawOffs, &" /*"[HasSpace]);
+ unsigned EndPos;
+
+ do {
+ EndPos = RawOffs+RawTok.getLength();
+
+ RawTok = GetNextRawTok(RawTokens, CurRawTok, true);
+ RawOffs = SM.getFileOffset(RawTok.getLocation());
+
+ if (RawTok.is(tok::comment)) {
+ // Skip past the comment.
+ RawTok = GetNextRawTok(RawTokens, CurRawTok, false);
+ break;
+ }
+
+ } while (RawOffs <= PPOffs && !RawTok.isAtStartOfLine() &&
+ (PPOffs != RawOffs || !isSameToken(RawTok, PPTok)));
+
+ RB.InsertTextBefore(EndPos, "*/");
+ continue;
+ }
+
+ // Otherwise, there was a replacement an expansion. Insert the new token
+ // in the output buffer. Insert the whole run of new tokens at once to get
+ // them in the right order.
+ unsigned InsertPos = PPOffs;
+ std::string Expansion;
+ while (PPOffs < RawOffs) {
+ Expansion += ' ' + PP.getSpelling(PPTok);
+ PP.Lex(PPTok);
+ PPLoc = SM.getExpansionLoc(PPTok.getLocation());
+ PPOffs = SM.getFileOffset(PPLoc);
+ }
+ Expansion += ' ';
+ RB.InsertTextBefore(InsertPos, Expansion);
+ }
+
+ // Get the buffer corresponding to MainFileID. If we haven't changed it, then
+ // we are done.
+ if (const RewriteBuffer *RewriteBuf =
+ Rewrite.getRewriteBufferFor(SM.getMainFileID())) {
+ //printf("Changed:\n");
+ *OS << std::string(RewriteBuf->begin(), RewriteBuf->end());
+ } else {
+ fprintf(stderr, "No changes\n");
+ }
+ OS->flush();
+}
diff --git a/lib/Frontend/Rewrite/RewriteModernObjC.cpp b/lib/Frontend/Rewrite/RewriteModernObjC.cpp
new file mode 100644
index 0000000..ffac51e
--- /dev/null
+++ b/lib/Frontend/Rewrite/RewriteModernObjC.cpp
@@ -0,0 +1,7743 @@
+//===--- RewriteObjC.cpp - Playground for the code rewriter ---------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Hacks and fun related to the code rewriter.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Rewrite/Frontend/ASTConsumers.h"
+#include "clang/AST/AST.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/AST/Attr.h"
+#include "clang/AST/ParentMap.h"
+#include "clang/Basic/CharInfo.h"
+#include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/IdentifierTable.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Basic/TargetInfo.h"
+#include "clang/Lex/Lexer.h"
+#include "clang/Rewrite/Core/Rewriter.h"
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
+#include <memory>
+
+#ifdef CLANG_ENABLE_OBJC_REWRITER
+
+using namespace clang;
+using llvm::utostr;
+
+namespace {
+ class RewriteModernObjC : public ASTConsumer {
+ protected:
+
+ enum {
+ BLOCK_FIELD_IS_OBJECT = 3, /* id, NSObject, __attribute__((NSObject)),
+ block, ... */
+ BLOCK_FIELD_IS_BLOCK = 7, /* a block variable */
+ BLOCK_FIELD_IS_BYREF = 8, /* the on stack structure holding the
+ __block variable */
+ BLOCK_FIELD_IS_WEAK = 16, /* declared __weak, only used in byref copy
+ helpers */
+ BLOCK_BYREF_CALLER = 128, /* called from __block (byref) copy/dispose
+ support routines */
+ BLOCK_BYREF_CURRENT_MAX = 256
+ };
+
+ enum {
+ BLOCK_NEEDS_FREE = (1 << 24),
+ BLOCK_HAS_COPY_DISPOSE = (1 << 25),
+ BLOCK_HAS_CXX_OBJ = (1 << 26),
+ BLOCK_IS_GC = (1 << 27),
+ BLOCK_IS_GLOBAL = (1 << 28),
+ BLOCK_HAS_DESCRIPTOR = (1 << 29)
+ };
+
+ Rewriter Rewrite;
+ DiagnosticsEngine &Diags;
+ const LangOptions &LangOpts;
+ ASTContext *Context;
+ SourceManager *SM;
+ TranslationUnitDecl *TUDecl;
+ FileID MainFileID;
+ const char *MainFileStart, *MainFileEnd;
+ Stmt *CurrentBody;
+ ParentMap *PropParentMap; // created lazily.
+ std::string InFileName;
+ raw_ostream* OutFile;
+ std::string Preamble;
+
+ TypeDecl *ProtocolTypeDecl;
+ VarDecl *GlobalVarDecl;
+ Expr *GlobalConstructionExp;
+ unsigned RewriteFailedDiag;
+ unsigned GlobalBlockRewriteFailedDiag;
+ // ObjC string constant support.
+ unsigned NumObjCStringLiterals;
+ VarDecl *ConstantStringClassReference;
+ RecordDecl *NSStringRecord;
+
+ // ObjC foreach break/continue generation support.
+ int BcLabelCount;
+
+ unsigned TryFinallyContainsReturnDiag;
+ // Needed for super.
+ ObjCMethodDecl *CurMethodDef;
+ RecordDecl *SuperStructDecl;
+ RecordDecl *ConstantStringDecl;
+
+ FunctionDecl *MsgSendFunctionDecl;
+ FunctionDecl *MsgSendSuperFunctionDecl;
+ FunctionDecl *MsgSendStretFunctionDecl;
+ FunctionDecl *MsgSendSuperStretFunctionDecl;
+ FunctionDecl *MsgSendFpretFunctionDecl;
+ FunctionDecl *GetClassFunctionDecl;
+ FunctionDecl *GetMetaClassFunctionDecl;
+ FunctionDecl *GetSuperClassFunctionDecl;
+ FunctionDecl *SelGetUidFunctionDecl;
+ FunctionDecl *CFStringFunctionDecl;
+ FunctionDecl *SuperConstructorFunctionDecl;
+ FunctionDecl *CurFunctionDef;
+
+ /* Misc. containers needed for meta-data rewrite. */
+ SmallVector<ObjCImplementationDecl *, 8> ClassImplementation;
+ SmallVector<ObjCCategoryImplDecl *, 8> CategoryImplementation;
+ llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCSynthesizedStructs;
+ llvm::SmallPtrSet<ObjCProtocolDecl*, 8> ObjCSynthesizedProtocols;
+ llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCWrittenInterfaces;
+ llvm::SmallPtrSet<TagDecl*, 32> GlobalDefinedTags;
+ SmallVector<ObjCInterfaceDecl*, 32> ObjCInterfacesSeen;
+ /// DefinedNonLazyClasses - List of defined "non-lazy" classes.
+ SmallVector<ObjCInterfaceDecl*, 8> DefinedNonLazyClasses;
+
+ /// DefinedNonLazyCategories - List of defined "non-lazy" categories.
+ SmallVector<ObjCCategoryDecl *, 8> DefinedNonLazyCategories;
+
+ SmallVector<Stmt *, 32> Stmts;
+ SmallVector<int, 8> ObjCBcLabelNo;
+ // Remember all the @protocol(<expr>) expressions.
+ llvm::SmallPtrSet<ObjCProtocolDecl *, 32> ProtocolExprDecls;
+
+ llvm::DenseSet<uint64_t> CopyDestroyCache;
+
+ // Block expressions.
+ SmallVector<BlockExpr *, 32> Blocks;
+ SmallVector<int, 32> InnerDeclRefsCount;
+ SmallVector<DeclRefExpr *, 32> InnerDeclRefs;
+
+ SmallVector<DeclRefExpr *, 32> BlockDeclRefs;
+
+
+ // Block related declarations.
+ SmallVector<ValueDecl *, 8> BlockByCopyDecls;
+ llvm::SmallPtrSet<ValueDecl *, 8> BlockByCopyDeclsPtrSet;
+ SmallVector<ValueDecl *, 8> BlockByRefDecls;
+ llvm::SmallPtrSet<ValueDecl *, 8> BlockByRefDeclsPtrSet;
+ llvm::DenseMap<ValueDecl *, unsigned> BlockByRefDeclNo;
+ llvm::SmallPtrSet<ValueDecl *, 8> ImportedBlockDecls;
+ llvm::SmallPtrSet<VarDecl *, 8> ImportedLocalExternalDecls;
+
+ llvm::DenseMap<BlockExpr *, std::string> RewrittenBlockExprs;
+ llvm::DenseMap<ObjCInterfaceDecl *,
+ llvm::SmallPtrSet<ObjCIvarDecl *, 8> > ReferencedIvars;
+
+ // ivar bitfield grouping containers
+ llvm::DenseSet<const ObjCInterfaceDecl *> ObjCInterefaceHasBitfieldGroups;
+ llvm::DenseMap<const ObjCIvarDecl* , unsigned> IvarGroupNumber;
+ // This container maps an <class, group number for ivar> tuple to the type
+ // of the struct where the bitfield belongs.
+ llvm::DenseMap<std::pair<const ObjCInterfaceDecl*, unsigned>, QualType> GroupRecordType;
+ SmallVector<FunctionDecl*, 32> FunctionDefinitionsSeen;
+
+ // This maps an original source AST to it's rewritten form. This allows
+ // us to avoid rewriting the same node twice (which is very uncommon).
+ // This is needed to support some of the exotic property rewriting.
+ llvm::DenseMap<Stmt *, Stmt *> ReplacedNodes;
+
+ // Needed for header files being rewritten
+ bool IsHeader;
+ bool SilenceRewriteMacroWarning;
+ bool GenerateLineInfo;
+ bool objc_impl_method;
+
+ bool DisableReplaceStmt;
+ class DisableReplaceStmtScope {
+ RewriteModernObjC &R;
+ bool SavedValue;
+
+ public:
+ DisableReplaceStmtScope(RewriteModernObjC &R)
+ : R(R), SavedValue(R.DisableReplaceStmt) {
+ R.DisableReplaceStmt = true;
+ }
+ ~DisableReplaceStmtScope() {
+ R.DisableReplaceStmt = SavedValue;
+ }
+ };
+ void InitializeCommon(ASTContext &context);
+
+ public:
+ llvm::DenseMap<ObjCMethodDecl*, std::string> MethodInternalNames;
+ // Top Level Driver code.
+ bool HandleTopLevelDecl(DeclGroupRef D) override {
+ for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) {
+ if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(*I)) {
+ if (!Class->isThisDeclarationADefinition()) {
+ RewriteForwardClassDecl(D);
+ break;
+ } else {
+ // Keep track of all interface declarations seen.
+ ObjCInterfacesSeen.push_back(Class);
+ break;
+ }
+ }
+
+ if (ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>(*I)) {
+ if (!Proto->isThisDeclarationADefinition()) {
+ RewriteForwardProtocolDecl(D);
+ break;
+ }
+ }
+
+ if (FunctionDecl *FDecl = dyn_cast<FunctionDecl>(*I)) {
+ // Under modern abi, we cannot translate body of the function
+ // yet until all class extensions and its implementation is seen.
+ // This is because they may introduce new bitfields which must go
+ // into their grouping struct.
+ if (FDecl->isThisDeclarationADefinition() &&
+ // Not c functions defined inside an objc container.
+ !FDecl->isTopLevelDeclInObjCContainer()) {
+ FunctionDefinitionsSeen.push_back(FDecl);
+ break;
+ }
+ }
+ HandleTopLevelSingleDecl(*I);
+ }
+ return true;
+ }
+
+ void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) override {
+ for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) {
+ if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(*I)) {
+ if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
+ RewriteBlockPointerDecl(TD);
+ else if (TD->getUnderlyingType()->isFunctionPointerType())
+ CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
+ else
+ RewriteObjCQualifiedInterfaceTypes(TD);
+ }
+ }
+ return;
+ }
+
+ void HandleTopLevelSingleDecl(Decl *D);
+ void HandleDeclInMainFile(Decl *D);
+ RewriteModernObjC(std::string inFile, raw_ostream *OS,
+ DiagnosticsEngine &D, const LangOptions &LOpts,
+ bool silenceMacroWarn, bool LineInfo);
+
+ ~RewriteModernObjC() {}
+
+ void HandleTranslationUnit(ASTContext &C) override;
+
+ void ReplaceStmt(Stmt *Old, Stmt *New) {
+ ReplaceStmtWithRange(Old, New, Old->getSourceRange());
+ }
+
+ void ReplaceStmtWithRange(Stmt *Old, Stmt *New, SourceRange SrcRange) {
+ assert(Old != nullptr && New != nullptr && "Expected non-null Stmt's");
+
+ Stmt *ReplacingStmt = ReplacedNodes[Old];
+ if (ReplacingStmt)
+ return; // We can't rewrite the same node twice.
+
+ if (DisableReplaceStmt)
+ return;
+
+ // Measure the old text.
+ int Size = Rewrite.getRangeSize(SrcRange);
+ if (Size == -1) {
+ Diags.Report(Context->getFullLoc(Old->getLocStart()), RewriteFailedDiag)
+ << Old->getSourceRange();
+ return;
+ }
+ // Get the new text.
+ std::string SStr;
+ llvm::raw_string_ostream S(SStr);
+ New->printPretty(S, nullptr, PrintingPolicy(LangOpts));
+ const std::string &Str = S.str();
+
+ // If replacement succeeded or warning disabled return with no warning.
+ if (!Rewrite.ReplaceText(SrcRange.getBegin(), Size, Str)) {
+ ReplacedNodes[Old] = New;
+ return;
+ }
+ if (SilenceRewriteMacroWarning)
+ return;
+ Diags.Report(Context->getFullLoc(Old->getLocStart()), RewriteFailedDiag)
+ << Old->getSourceRange();
+ }
+
+ void InsertText(SourceLocation Loc, StringRef Str,
+ bool InsertAfter = true) {
+ // If insertion succeeded or warning disabled return with no warning.
+ if (!Rewrite.InsertText(Loc, Str, InsertAfter) ||
+ SilenceRewriteMacroWarning)
+ return;
+
+ Diags.Report(Context->getFullLoc(Loc), RewriteFailedDiag);
+ }
+
+ void ReplaceText(SourceLocation Start, unsigned OrigLength,
+ StringRef Str) {
+ // If removal succeeded or warning disabled return with no warning.
+ if (!Rewrite.ReplaceText(Start, OrigLength, Str) ||
+ SilenceRewriteMacroWarning)
+ return;
+
+ Diags.Report(Context->getFullLoc(Start), RewriteFailedDiag);
+ }
+
+ // Syntactic Rewriting.
+ void RewriteRecordBody(RecordDecl *RD);
+ void RewriteInclude();
+ void RewriteLineDirective(const Decl *D);
+ void ConvertSourceLocationToLineDirective(SourceLocation Loc,
+ std::string &LineString);
+ void RewriteForwardClassDecl(DeclGroupRef D);
+ void RewriteForwardClassDecl(const SmallVectorImpl<Decl *> &DG);
+ void RewriteForwardClassEpilogue(ObjCInterfaceDecl *ClassDecl,
+ const std::string &typedefString);
+ void RewriteImplementations();
+ void RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
+ ObjCImplementationDecl *IMD,
+ ObjCCategoryImplDecl *CID);
+ void RewriteInterfaceDecl(ObjCInterfaceDecl *Dcl);
+ void RewriteImplementationDecl(Decl *Dcl);
+ void RewriteObjCMethodDecl(const ObjCInterfaceDecl *IDecl,
+ ObjCMethodDecl *MDecl, std::string &ResultStr);
+ void RewriteTypeIntoString(QualType T, std::string &ResultStr,
+ const FunctionType *&FPRetType);
+ void RewriteByRefString(std::string &ResultStr, const std::string &Name,
+ ValueDecl *VD, bool def=false);
+ void RewriteCategoryDecl(ObjCCategoryDecl *Dcl);
+ void RewriteProtocolDecl(ObjCProtocolDecl *Dcl);
+ void RewriteForwardProtocolDecl(DeclGroupRef D);
+ void RewriteForwardProtocolDecl(const SmallVectorImpl<Decl *> &DG);
+ void RewriteMethodDeclaration(ObjCMethodDecl *Method);
+ void RewriteProperty(ObjCPropertyDecl *prop);
+ void RewriteFunctionDecl(FunctionDecl *FD);
+ void RewriteBlockPointerType(std::string& Str, QualType Type);
+ void RewriteBlockPointerTypeVariable(std::string& Str, ValueDecl *VD);
+ void RewriteBlockLiteralFunctionDecl(FunctionDecl *FD);
+ void RewriteObjCQualifiedInterfaceTypes(Decl *Dcl);
+ void RewriteTypeOfDecl(VarDecl *VD);
+ void RewriteObjCQualifiedInterfaceTypes(Expr *E);
+
+ std::string getIvarAccessString(ObjCIvarDecl *D);
+
+ // Expression Rewriting.
+ Stmt *RewriteFunctionBodyOrGlobalInitializer(Stmt *S);
+ Stmt *RewriteAtEncode(ObjCEncodeExpr *Exp);
+ Stmt *RewritePropertyOrImplicitGetter(PseudoObjectExpr *Pseudo);
+ Stmt *RewritePropertyOrImplicitSetter(PseudoObjectExpr *Pseudo);
+ Stmt *RewriteAtSelector(ObjCSelectorExpr *Exp);
+ Stmt *RewriteMessageExpr(ObjCMessageExpr *Exp);
+ Stmt *RewriteObjCStringLiteral(ObjCStringLiteral *Exp);
+ Stmt *RewriteObjCBoolLiteralExpr(ObjCBoolLiteralExpr *Exp);
+ Stmt *RewriteObjCBoxedExpr(ObjCBoxedExpr *Exp);
+ Stmt *RewriteObjCArrayLiteralExpr(ObjCArrayLiteral *Exp);
+ Stmt *RewriteObjCDictionaryLiteralExpr(ObjCDictionaryLiteral *Exp);
+ Stmt *RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp);
+ Stmt *RewriteObjCTryStmt(ObjCAtTryStmt *S);
+ Stmt *RewriteObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S);
+ Stmt *RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S);
+ Stmt *RewriteObjCThrowStmt(ObjCAtThrowStmt *S);
+ Stmt *RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S,
+ SourceLocation OrigEnd);
+ Stmt *RewriteBreakStmt(BreakStmt *S);
+ Stmt *RewriteContinueStmt(ContinueStmt *S);
+ void RewriteCastExpr(CStyleCastExpr *CE);
+ void RewriteImplicitCastObjCExpr(CastExpr *IE);
+ void RewriteLinkageSpec(LinkageSpecDecl *LSD);
+
+ // Computes ivar bitfield group no.
+ unsigned ObjCIvarBitfieldGroupNo(ObjCIvarDecl *IV);
+ // Names field decl. for ivar bitfield group.
+ void ObjCIvarBitfieldGroupDecl(ObjCIvarDecl *IV, std::string &Result);
+ // Names struct type for ivar bitfield group.
+ void ObjCIvarBitfieldGroupType(ObjCIvarDecl *IV, std::string &Result);
+ // Names symbol for ivar bitfield group field offset.
+ void ObjCIvarBitfieldGroupOffset(ObjCIvarDecl *IV, std::string &Result);
+ // Given an ivar bitfield, it builds (or finds) its group record type.
+ QualType GetGroupRecordTypeForObjCIvarBitfield(ObjCIvarDecl *IV);
+ QualType SynthesizeBitfieldGroupStructType(
+ ObjCIvarDecl *IV,
+ SmallVectorImpl<ObjCIvarDecl *> &IVars);
+
+ // Block rewriting.
+ void RewriteBlocksInFunctionProtoType(QualType funcType, NamedDecl *D);
+
+ // Block specific rewrite rules.
+ void RewriteBlockPointerDecl(NamedDecl *VD);
+ void RewriteByRefVar(VarDecl *VD, bool firstDecl, bool lastDecl);
+ Stmt *RewriteBlockDeclRefExpr(DeclRefExpr *VD);
+ Stmt *RewriteLocalVariableExternalStorage(DeclRefExpr *DRE);
+ void RewriteBlockPointerFunctionArgs(FunctionDecl *FD);
+
+ void RewriteObjCInternalStruct(ObjCInterfaceDecl *CDecl,
+ std::string &Result);
+
+ void RewriteObjCFieldDecl(FieldDecl *fieldDecl, std::string &Result);
+ bool IsTagDefinedInsideClass(ObjCContainerDecl *IDecl, TagDecl *Tag,
+ bool &IsNamedDefinition);
+ void RewriteLocallyDefinedNamedAggregates(FieldDecl *fieldDecl,
+ std::string &Result);
+
+ bool RewriteObjCFieldDeclType(QualType &Type, std::string &Result);
+
+ void RewriteIvarOffsetSymbols(ObjCInterfaceDecl *CDecl,
+ std::string &Result);
+
+ void Initialize(ASTContext &context) override;
+
+ // Misc. AST transformation routines. Sometimes they end up calling
+ // rewriting routines on the new ASTs.
+ CallExpr *SynthesizeCallToFunctionDecl(FunctionDecl *FD,
+ Expr **args, unsigned nargs,
+ SourceLocation StartLoc=SourceLocation(),
+ SourceLocation EndLoc=SourceLocation());
+
+ Expr *SynthMsgSendStretCallExpr(FunctionDecl *MsgSendStretFlavor,
+ QualType returnType,
+ SmallVectorImpl<QualType> &ArgTypes,
+ SmallVectorImpl<Expr*> &MsgExprs,
+ ObjCMethodDecl *Method);
+
+ Stmt *SynthMessageExpr(ObjCMessageExpr *Exp,
+ SourceLocation StartLoc=SourceLocation(),
+ SourceLocation EndLoc=SourceLocation());
+
+ void SynthCountByEnumWithState(std::string &buf);
+ void SynthMsgSendFunctionDecl();
+ void SynthMsgSendSuperFunctionDecl();
+ void SynthMsgSendStretFunctionDecl();
+ void SynthMsgSendFpretFunctionDecl();
+ void SynthMsgSendSuperStretFunctionDecl();
+ void SynthGetClassFunctionDecl();
+ void SynthGetMetaClassFunctionDecl();
+ void SynthGetSuperClassFunctionDecl();
+ void SynthSelGetUidFunctionDecl();
+ void SynthSuperConstructorFunctionDecl();
+
+ // Rewriting metadata
+ template<typename MethodIterator>
+ void RewriteObjCMethodsMetaData(MethodIterator MethodBegin,
+ MethodIterator MethodEnd,
+ bool IsInstanceMethod,
+ StringRef prefix,
+ StringRef ClassName,
+ std::string &Result);
+ void RewriteObjCProtocolMetaData(ObjCProtocolDecl *Protocol,
+ std::string &Result);
+ void RewriteObjCProtocolListMetaData(
+ const ObjCList<ObjCProtocolDecl> &Prots,
+ StringRef prefix, StringRef ClassName, std::string &Result);
+ void RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
+ std::string &Result);
+ void RewriteClassSetupInitHook(std::string &Result);
+
+ void RewriteMetaDataIntoBuffer(std::string &Result);
+ void WriteImageInfo(std::string &Result);
+ void RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *CDecl,
+ std::string &Result);
+ void RewriteCategorySetupInitHook(std::string &Result);
+
+ // Rewriting ivar
+ void RewriteIvarOffsetComputation(ObjCIvarDecl *ivar,
+ std::string &Result);
+ Stmt *RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV);
+
+
+ std::string SynthesizeByrefCopyDestroyHelper(VarDecl *VD, int flag);
+ std::string SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
+ StringRef funcName, std::string Tag);
+ std::string SynthesizeBlockFunc(BlockExpr *CE, int i,
+ StringRef funcName, std::string Tag);
+ std::string SynthesizeBlockImpl(BlockExpr *CE,
+ std::string Tag, std::string Desc);
+ std::string SynthesizeBlockDescriptor(std::string DescTag,
+ std::string ImplTag,
+ int i, StringRef funcName,
+ unsigned hasCopy);
+ Stmt *SynthesizeBlockCall(CallExpr *Exp, const Expr* BlockExp);
+ void SynthesizeBlockLiterals(SourceLocation FunLocStart,
+ StringRef FunName);
+ FunctionDecl *SynthBlockInitFunctionDecl(StringRef name);
+ Stmt *SynthBlockInitExpr(BlockExpr *Exp,
+ const SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs);
+
+ // Misc. helper routines.
+ QualType getProtocolType();
+ void WarnAboutReturnGotoStmts(Stmt *S);
+ void CheckFunctionPointerDecl(QualType dType, NamedDecl *ND);
+ void InsertBlockLiteralsWithinFunction(FunctionDecl *FD);
+ void InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD);
+
+ bool IsDeclStmtInForeachHeader(DeclStmt *DS);
+ void CollectBlockDeclRefInfo(BlockExpr *Exp);
+ void GetBlockDeclRefExprs(Stmt *S);
+ void GetInnerBlockDeclRefExprs(Stmt *S,
+ SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs,
+ llvm::SmallPtrSetImpl<const DeclContext *> &InnerContexts);
+
+ // We avoid calling Type::isBlockPointerType(), since it operates on the
+ // canonical type. We only care if the top-level type is a closure pointer.
+ bool isTopLevelBlockPointerType(QualType T) {
+ return isa<BlockPointerType>(T);
+ }
+
+ /// convertBlockPointerToFunctionPointer - Converts a block-pointer type
+ /// to a function pointer type and upon success, returns true; false
+ /// otherwise.
+ bool convertBlockPointerToFunctionPointer(QualType &T) {
+ if (isTopLevelBlockPointerType(T)) {
+ const BlockPointerType *BPT = T->getAs<BlockPointerType>();
+ T = Context->getPointerType(BPT->getPointeeType());
+ return true;
+ }
+ return false;
+ }
+
+ bool convertObjCTypeToCStyleType(QualType &T);
+
+ bool needToScanForQualifiers(QualType T);
+ QualType getSuperStructType();
+ QualType getConstantStringStructType();
+ QualType convertFunctionTypeOfBlocks(const FunctionType *FT);
+ bool BufferContainsPPDirectives(const char *startBuf, const char *endBuf);
+
+ void convertToUnqualifiedObjCType(QualType &T) {
+ if (T->isObjCQualifiedIdType()) {
+ bool isConst = T.isConstQualified();
+ T = isConst ? Context->getObjCIdType().withConst()
+ : Context->getObjCIdType();
+ }
+ else if (T->isObjCQualifiedClassType())
+ T = Context->getObjCClassType();
+ else if (T->isObjCObjectPointerType() &&
+ T->getPointeeType()->isObjCQualifiedInterfaceType()) {
+ if (const ObjCObjectPointerType * OBJPT =
+ T->getAsObjCInterfacePointerType()) {
+ const ObjCInterfaceType *IFaceT = OBJPT->getInterfaceType();
+ T = QualType(IFaceT, 0);
+ T = Context->getPointerType(T);
+ }
+ }
+ }
+
+ // FIXME: This predicate seems like it would be useful to add to ASTContext.
+ bool isObjCType(QualType T) {
+ if (!LangOpts.ObjC1 && !LangOpts.ObjC2)
+ return false;
+
+ QualType OCT = Context->getCanonicalType(T).getUnqualifiedType();
+
+ if (OCT == Context->getCanonicalType(Context->getObjCIdType()) ||
+ OCT == Context->getCanonicalType(Context->getObjCClassType()))
+ return true;
+
+ if (const PointerType *PT = OCT->getAs<PointerType>()) {
+ if (isa<ObjCInterfaceType>(PT->getPointeeType()) ||
+ PT->getPointeeType()->isObjCQualifiedIdType())
+ return true;
+ }
+ return false;
+ }
+ bool PointerTypeTakesAnyBlockArguments(QualType QT);
+ bool PointerTypeTakesAnyObjCQualifiedType(QualType QT);
+ void GetExtentOfArgList(const char *Name, const char *&LParen,
+ const char *&RParen);
+
+ void QuoteDoublequotes(std::string &From, std::string &To) {
+ for (unsigned i = 0; i < From.length(); i++) {
+ if (From[i] == '"')
+ To += "\\\"";
+ else
+ To += From[i];
+ }
+ }
+
+ QualType getSimpleFunctionType(QualType result,
+ ArrayRef<QualType> args,
+ bool variadic = false) {
+ if (result == Context->getObjCInstanceType())
+ result = Context->getObjCIdType();
+ FunctionProtoType::ExtProtoInfo fpi;
+ fpi.Variadic = variadic;
+ return Context->getFunctionType(result, args, fpi);
+ }
+
+ // Helper function: create a CStyleCastExpr with trivial type source info.
+ CStyleCastExpr* NoTypeInfoCStyleCastExpr(ASTContext *Ctx, QualType Ty,
+ CastKind Kind, Expr *E) {
+ TypeSourceInfo *TInfo = Ctx->getTrivialTypeSourceInfo(Ty, SourceLocation());
+ return CStyleCastExpr::Create(*Ctx, Ty, VK_RValue, Kind, E, nullptr,
+ TInfo, SourceLocation(), SourceLocation());
+ }
+
+ bool ImplementationIsNonLazy(const ObjCImplDecl *OD) const {
+ IdentifierInfo* II = &Context->Idents.get("load");
+ Selector LoadSel = Context->Selectors.getSelector(0, &II);
+ return OD->getClassMethod(LoadSel) != nullptr;
+ }
+
+ StringLiteral *getStringLiteral(StringRef Str) {
+ QualType StrType = Context->getConstantArrayType(
+ Context->CharTy, llvm::APInt(32, Str.size() + 1), ArrayType::Normal,
+ 0);
+ return StringLiteral::Create(*Context, Str, StringLiteral::Ascii,
+ /*Pascal=*/false, StrType, SourceLocation());
+ }
+ };
+
+}
+
+void RewriteModernObjC::RewriteBlocksInFunctionProtoType(QualType funcType,
+ NamedDecl *D) {
+ if (const FunctionProtoType *fproto
+ = dyn_cast<FunctionProtoType>(funcType.IgnoreParens())) {
+ for (const auto &I : fproto->param_types())
+ if (isTopLevelBlockPointerType(I)) {
+ // All the args are checked/rewritten. Don't call twice!
+ RewriteBlockPointerDecl(D);
+ break;
+ }
+ }
+}
+
+void RewriteModernObjC::CheckFunctionPointerDecl(QualType funcType, NamedDecl *ND) {
+ const PointerType *PT = funcType->getAs<PointerType>();
+ if (PT && PointerTypeTakesAnyBlockArguments(funcType))
+ RewriteBlocksInFunctionProtoType(PT->getPointeeType(), ND);
+}
+
+static bool IsHeaderFile(const std::string &Filename) {
+ std::string::size_type DotPos = Filename.rfind('.');
+
+ if (DotPos == std::string::npos) {
+ // no file extension
+ return false;
+ }
+
+ std::string Ext = std::string(Filename.begin()+DotPos+1, Filename.end());
+ // C header: .h
+ // C++ header: .hh or .H;
+ return Ext == "h" || Ext == "hh" || Ext == "H";
+}
+
+RewriteModernObjC::RewriteModernObjC(std::string inFile, raw_ostream* OS,
+ DiagnosticsEngine &D, const LangOptions &LOpts,
+ bool silenceMacroWarn,
+ bool LineInfo)
+ : Diags(D), LangOpts(LOpts), InFileName(inFile), OutFile(OS),
+ SilenceRewriteMacroWarning(silenceMacroWarn), GenerateLineInfo(LineInfo) {
+ IsHeader = IsHeaderFile(inFile);
+ RewriteFailedDiag = Diags.getCustomDiagID(DiagnosticsEngine::Warning,
+ "rewriting sub-expression within a macro (may not be correct)");
+ // FIXME. This should be an error. But if block is not called, it is OK. And it
+ // may break including some headers.
+ GlobalBlockRewriteFailedDiag = Diags.getCustomDiagID(DiagnosticsEngine::Warning,
+ "rewriting block literal declared in global scope is not implemented");
+
+ TryFinallyContainsReturnDiag = Diags.getCustomDiagID(
+ DiagnosticsEngine::Warning,
+ "rewriter doesn't support user-specified control flow semantics "
+ "for @try/@finally (code may not execute properly)");
+}
+
+std::unique_ptr<ASTConsumer> clang::CreateModernObjCRewriter(
+ const std::string &InFile, raw_ostream *OS, DiagnosticsEngine &Diags,
+ const LangOptions &LOpts, bool SilenceRewriteMacroWarning, bool LineInfo) {
+ return llvm::make_unique<RewriteModernObjC>(
+ InFile, OS, Diags, LOpts, SilenceRewriteMacroWarning, LineInfo);
+}
+
+void RewriteModernObjC::InitializeCommon(ASTContext &context) {
+ Context = &context;
+ SM = &Context->getSourceManager();
+ TUDecl = Context->getTranslationUnitDecl();
+ MsgSendFunctionDecl = nullptr;
+ MsgSendSuperFunctionDecl = nullptr;
+ MsgSendStretFunctionDecl = nullptr;
+ MsgSendSuperStretFunctionDecl = nullptr;
+ MsgSendFpretFunctionDecl = nullptr;
+ GetClassFunctionDecl = nullptr;
+ GetMetaClassFunctionDecl = nullptr;
+ GetSuperClassFunctionDecl = nullptr;
+ SelGetUidFunctionDecl = nullptr;
+ CFStringFunctionDecl = nullptr;
+ ConstantStringClassReference = nullptr;
+ NSStringRecord = nullptr;
+ CurMethodDef = nullptr;
+ CurFunctionDef = nullptr;
+ GlobalVarDecl = nullptr;
+ GlobalConstructionExp = nullptr;
+ SuperStructDecl = nullptr;
+ ProtocolTypeDecl = nullptr;
+ ConstantStringDecl = nullptr;
+ BcLabelCount = 0;
+ SuperConstructorFunctionDecl = nullptr;
+ NumObjCStringLiterals = 0;
+ PropParentMap = nullptr;
+ CurrentBody = nullptr;
+ DisableReplaceStmt = false;
+ objc_impl_method = false;
+
+ // Get the ID and start/end of the main file.
+ MainFileID = SM->getMainFileID();
+ const llvm::MemoryBuffer *MainBuf = SM->getBuffer(MainFileID);
+ MainFileStart = MainBuf->getBufferStart();
+ MainFileEnd = MainBuf->getBufferEnd();
+
+ Rewrite.setSourceMgr(Context->getSourceManager(), Context->getLangOpts());
+}
+
+//===----------------------------------------------------------------------===//
+// Top Level Driver Code
+//===----------------------------------------------------------------------===//
+
+void RewriteModernObjC::HandleTopLevelSingleDecl(Decl *D) {
+ if (Diags.hasErrorOccurred())
+ return;
+
+ // Two cases: either the decl could be in the main file, or it could be in a
+ // #included file. If the former, rewrite it now. If the later, check to see
+ // if we rewrote the #include/#import.
+ SourceLocation Loc = D->getLocation();
+ Loc = SM->getExpansionLoc(Loc);
+
+ // If this is for a builtin, ignore it.
+ if (Loc.isInvalid()) return;
+
+ // Look for built-in declarations that we need to refer during the rewrite.
+ if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
+ RewriteFunctionDecl(FD);
+ } else if (VarDecl *FVD = dyn_cast<VarDecl>(D)) {
+ // declared in <Foundation/NSString.h>
+ if (FVD->getName() == "_NSConstantStringClassReference") {
+ ConstantStringClassReference = FVD;
+ return;
+ }
+ } else if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(D)) {
+ RewriteCategoryDecl(CD);
+ } else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
+ if (PD->isThisDeclarationADefinition())
+ RewriteProtocolDecl(PD);
+ } else if (LinkageSpecDecl *LSD = dyn_cast<LinkageSpecDecl>(D)) {
+ // FIXME. This will not work in all situations and leaving it out
+ // is harmless.
+ // RewriteLinkageSpec(LSD);
+
+ // Recurse into linkage specifications
+ for (DeclContext::decl_iterator DI = LSD->decls_begin(),
+ DIEnd = LSD->decls_end();
+ DI != DIEnd; ) {
+ if (ObjCInterfaceDecl *IFace = dyn_cast<ObjCInterfaceDecl>((*DI))) {
+ if (!IFace->isThisDeclarationADefinition()) {
+ SmallVector<Decl *, 8> DG;
+ SourceLocation StartLoc = IFace->getLocStart();
+ do {
+ if (isa<ObjCInterfaceDecl>(*DI) &&
+ !cast<ObjCInterfaceDecl>(*DI)->isThisDeclarationADefinition() &&
+ StartLoc == (*DI)->getLocStart())
+ DG.push_back(*DI);
+ else
+ break;
+
+ ++DI;
+ } while (DI != DIEnd);
+ RewriteForwardClassDecl(DG);
+ continue;
+ }
+ else {
+ // Keep track of all interface declarations seen.
+ ObjCInterfacesSeen.push_back(IFace);
+ ++DI;
+ continue;
+ }
+ }
+
+ if (ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>((*DI))) {
+ if (!Proto->isThisDeclarationADefinition()) {
+ SmallVector<Decl *, 8> DG;
+ SourceLocation StartLoc = Proto->getLocStart();
+ do {
+ if (isa<ObjCProtocolDecl>(*DI) &&
+ !cast<ObjCProtocolDecl>(*DI)->isThisDeclarationADefinition() &&
+ StartLoc == (*DI)->getLocStart())
+ DG.push_back(*DI);
+ else
+ break;
+
+ ++DI;
+ } while (DI != DIEnd);
+ RewriteForwardProtocolDecl(DG);
+ continue;
+ }
+ }
+
+ HandleTopLevelSingleDecl(*DI);
+ ++DI;
+ }
+ }
+ // If we have a decl in the main file, see if we should rewrite it.
+ if (SM->isWrittenInMainFile(Loc))
+ return HandleDeclInMainFile(D);
+}
+
+//===----------------------------------------------------------------------===//
+// Syntactic (non-AST) Rewriting Code
+//===----------------------------------------------------------------------===//
+
+void RewriteModernObjC::RewriteInclude() {
+ SourceLocation LocStart = SM->getLocForStartOfFile(MainFileID);
+ StringRef MainBuf = SM->getBufferData(MainFileID);
+ const char *MainBufStart = MainBuf.begin();
+ const char *MainBufEnd = MainBuf.end();
+ size_t ImportLen = strlen("import");
+
+ // Loop over the whole file, looking for includes.
+ for (const char *BufPtr = MainBufStart; BufPtr < MainBufEnd; ++BufPtr) {
+ if (*BufPtr == '#') {
+ if (++BufPtr == MainBufEnd)
+ return;
+ while (*BufPtr == ' ' || *BufPtr == '\t')
+ if (++BufPtr == MainBufEnd)
+ return;
+ if (!strncmp(BufPtr, "import", ImportLen)) {
+ // replace import with include
+ SourceLocation ImportLoc =
+ LocStart.getLocWithOffset(BufPtr-MainBufStart);
+ ReplaceText(ImportLoc, ImportLen, "include");
+ BufPtr += ImportLen;
+ }
+ }
+ }
+}
+
+static void WriteInternalIvarName(const ObjCInterfaceDecl *IDecl,
+ ObjCIvarDecl *IvarDecl, std::string &Result) {
+ Result += "OBJC_IVAR_$_";
+ Result += IDecl->getName();
+ Result += "$";
+ Result += IvarDecl->getName();
+}
+
+std::string
+RewriteModernObjC::getIvarAccessString(ObjCIvarDecl *D) {
+ const ObjCInterfaceDecl *ClassDecl = D->getContainingInterface();
+
+ // Build name of symbol holding ivar offset.
+ std::string IvarOffsetName;
+ if (D->isBitField())
+ ObjCIvarBitfieldGroupOffset(D, IvarOffsetName);
+ else
+ WriteInternalIvarName(ClassDecl, D, IvarOffsetName);
+
+
+ std::string S = "(*(";
+ QualType IvarT = D->getType();
+ if (D->isBitField())
+ IvarT = GetGroupRecordTypeForObjCIvarBitfield(D);
+
+ if (!isa<TypedefType>(IvarT) && IvarT->isRecordType()) {
+ RecordDecl *RD = IvarT->getAs<RecordType>()->getDecl();
+ RD = RD->getDefinition();
+ if (RD && !RD->getDeclName().getAsIdentifierInfo()) {
+ // decltype(((Foo_IMPL*)0)->bar) *
+ ObjCContainerDecl *CDecl =
+ dyn_cast<ObjCContainerDecl>(D->getDeclContext());
+ // ivar in class extensions requires special treatment.
+ if (ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(CDecl))
+ CDecl = CatDecl->getClassInterface();
+ std::string RecName = CDecl->getName();
+ RecName += "_IMPL";
+ RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get(RecName.c_str()));
+ QualType PtrStructIMPL = Context->getPointerType(Context->getTagDeclType(RD));
+ unsigned UnsignedIntSize =
+ static_cast<unsigned>(Context->getTypeSize(Context->UnsignedIntTy));
+ Expr *Zero = IntegerLiteral::Create(*Context,
+ llvm::APInt(UnsignedIntSize, 0),
+ Context->UnsignedIntTy, SourceLocation());
+ Zero = NoTypeInfoCStyleCastExpr(Context, PtrStructIMPL, CK_BitCast, Zero);
+ ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
+ Zero);
+ FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
+ SourceLocation(),
+ &Context->Idents.get(D->getNameAsString()),
+ IvarT, nullptr,
+ /*BitWidth=*/nullptr, /*Mutable=*/true,
+ ICIS_NoInit);
+ MemberExpr *ME = new (Context) MemberExpr(PE, true, FD, SourceLocation(),
+ FD->getType(), VK_LValue,
+ OK_Ordinary);
+ IvarT = Context->getDecltypeType(ME, ME->getType());
+ }
+ }
+ convertObjCTypeToCStyleType(IvarT);
+ QualType castT = Context->getPointerType(IvarT);
+ std::string TypeString(castT.getAsString(Context->getPrintingPolicy()));
+ S += TypeString;
+ S += ")";
+
+ // ((char *)self + IVAR_OFFSET_SYMBOL_NAME)
+ S += "((char *)self + ";
+ S += IvarOffsetName;
+ S += "))";
+ if (D->isBitField()) {
+ S += ".";
+ S += D->getNameAsString();
+ }
+ ReferencedIvars[const_cast<ObjCInterfaceDecl *>(ClassDecl)].insert(D);
+ return S;
+}
+
+/// mustSynthesizeSetterGetterMethod - returns true if setter or getter has not
+/// been found in the class implementation. In this case, it must be synthesized.
+static bool mustSynthesizeSetterGetterMethod(ObjCImplementationDecl *IMP,
+ ObjCPropertyDecl *PD,
+ bool getter) {
+ return getter ? !IMP->getInstanceMethod(PD->getGetterName())
+ : !IMP->getInstanceMethod(PD->getSetterName());
+
+}
+
+void RewriteModernObjC::RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
+ ObjCImplementationDecl *IMD,
+ ObjCCategoryImplDecl *CID) {
+ static bool objcGetPropertyDefined = false;
+ static bool objcSetPropertyDefined = false;
+ SourceLocation startGetterSetterLoc;
+
+ if (PID->getLocStart().isValid()) {
+ SourceLocation startLoc = PID->getLocStart();
+ InsertText(startLoc, "// ");
+ const char *startBuf = SM->getCharacterData(startLoc);
+ assert((*startBuf == '@') && "bogus @synthesize location");
+ const char *semiBuf = strchr(startBuf, ';');
+ assert((*semiBuf == ';') && "@synthesize: can't find ';'");
+ startGetterSetterLoc = startLoc.getLocWithOffset(semiBuf-startBuf+1);
+ }
+ else
+ startGetterSetterLoc = IMD ? IMD->getLocEnd() : CID->getLocEnd();
+
+ if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
+ return; // FIXME: is this correct?
+
+ // Generate the 'getter' function.
+ ObjCPropertyDecl *PD = PID->getPropertyDecl();
+ ObjCIvarDecl *OID = PID->getPropertyIvarDecl();
+ assert(IMD && OID && "Synthesized ivars must be attached to @implementation");
+
+ unsigned Attributes = PD->getPropertyAttributes();
+ if (mustSynthesizeSetterGetterMethod(IMD, PD, true /*getter*/)) {
+ bool GenGetProperty = !(Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic) &&
+ (Attributes & (ObjCPropertyDecl::OBJC_PR_retain |
+ ObjCPropertyDecl::OBJC_PR_copy));
+ std::string Getr;
+ if (GenGetProperty && !objcGetPropertyDefined) {
+ objcGetPropertyDefined = true;
+ // FIXME. Is this attribute correct in all cases?
+ Getr = "\nextern \"C\" __declspec(dllimport) "
+ "id objc_getProperty(id, SEL, long, bool);\n";
+ }
+ RewriteObjCMethodDecl(OID->getContainingInterface(),
+ PD->getGetterMethodDecl(), Getr);
+ Getr += "{ ";
+ // Synthesize an explicit cast to gain access to the ivar.
+ // See objc-act.c:objc_synthesize_new_getter() for details.
+ if (GenGetProperty) {
+ // return objc_getProperty(self, _cmd, offsetof(ClassDecl, OID), 1)
+ Getr += "typedef ";
+ const FunctionType *FPRetType = nullptr;
+ RewriteTypeIntoString(PD->getGetterMethodDecl()->getReturnType(), Getr,
+ FPRetType);
+ Getr += " _TYPE";
+ if (FPRetType) {
+ Getr += ")"; // close the precedence "scope" for "*".
+
+ // Now, emit the argument types (if any).
+ if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)){
+ Getr += "(";
+ for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
+ if (i) Getr += ", ";
+ std::string ParamStr =
+ FT->getParamType(i).getAsString(Context->getPrintingPolicy());
+ Getr += ParamStr;
+ }
+ if (FT->isVariadic()) {
+ if (FT->getNumParams())
+ Getr += ", ";
+ Getr += "...";
+ }
+ Getr += ")";
+ } else
+ Getr += "()";
+ }
+ Getr += ";\n";
+ Getr += "return (_TYPE)";
+ Getr += "objc_getProperty(self, _cmd, ";
+ RewriteIvarOffsetComputation(OID, Getr);
+ Getr += ", 1)";
+ }
+ else
+ Getr += "return " + getIvarAccessString(OID);
+ Getr += "; }";
+ InsertText(startGetterSetterLoc, Getr);
+ }
+
+ if (PD->isReadOnly() ||
+ !mustSynthesizeSetterGetterMethod(IMD, PD, false /*setter*/))
+ return;
+
+ // Generate the 'setter' function.
+ std::string Setr;
+ bool GenSetProperty = Attributes & (ObjCPropertyDecl::OBJC_PR_retain |
+ ObjCPropertyDecl::OBJC_PR_copy);
+ if (GenSetProperty && !objcSetPropertyDefined) {
+ objcSetPropertyDefined = true;
+ // FIXME. Is this attribute correct in all cases?
+ Setr = "\nextern \"C\" __declspec(dllimport) "
+ "void objc_setProperty (id, SEL, long, id, bool, bool);\n";
+ }
+
+ RewriteObjCMethodDecl(OID->getContainingInterface(),
+ PD->getSetterMethodDecl(), Setr);
+ Setr += "{ ";
+ // Synthesize an explicit cast to initialize the ivar.
+ // See objc-act.c:objc_synthesize_new_setter() for details.
+ if (GenSetProperty) {
+ Setr += "objc_setProperty (self, _cmd, ";
+ RewriteIvarOffsetComputation(OID, Setr);
+ Setr += ", (id)";
+ Setr += PD->getName();
+ Setr += ", ";
+ if (Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic)
+ Setr += "0, ";
+ else
+ Setr += "1, ";
+ if (Attributes & ObjCPropertyDecl::OBJC_PR_copy)
+ Setr += "1)";
+ else
+ Setr += "0)";
+ }
+ else {
+ Setr += getIvarAccessString(OID) + " = ";
+ Setr += PD->getName();
+ }
+ Setr += "; }\n";
+ InsertText(startGetterSetterLoc, Setr);
+}
+
+static void RewriteOneForwardClassDecl(ObjCInterfaceDecl *ForwardDecl,
+ std::string &typedefString) {
+ typedefString += "\n#ifndef _REWRITER_typedef_";
+ typedefString += ForwardDecl->getNameAsString();
+ typedefString += "\n";
+ typedefString += "#define _REWRITER_typedef_";
+ typedefString += ForwardDecl->getNameAsString();
+ typedefString += "\n";
+ typedefString += "typedef struct objc_object ";
+ typedefString += ForwardDecl->getNameAsString();
+ // typedef struct { } _objc_exc_Classname;
+ typedefString += ";\ntypedef struct {} _objc_exc_";
+ typedefString += ForwardDecl->getNameAsString();
+ typedefString += ";\n#endif\n";
+}
+
+void RewriteModernObjC::RewriteForwardClassEpilogue(ObjCInterfaceDecl *ClassDecl,
+ const std::string &typedefString) {
+ SourceLocation startLoc = ClassDecl->getLocStart();
+ const char *startBuf = SM->getCharacterData(startLoc);
+ const char *semiPtr = strchr(startBuf, ';');
+ // Replace the @class with typedefs corresponding to the classes.
+ ReplaceText(startLoc, semiPtr-startBuf+1, typedefString);
+}
+
+void RewriteModernObjC::RewriteForwardClassDecl(DeclGroupRef D) {
+ std::string typedefString;
+ for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) {
+ if (ObjCInterfaceDecl *ForwardDecl = dyn_cast<ObjCInterfaceDecl>(*I)) {
+ if (I == D.begin()) {
+ // Translate to typedef's that forward reference structs with the same name
+ // as the class. As a convenience, we include the original declaration
+ // as a comment.
+ typedefString += "// @class ";
+ typedefString += ForwardDecl->getNameAsString();
+ typedefString += ";";
+ }
+ RewriteOneForwardClassDecl(ForwardDecl, typedefString);
+ }
+ else
+ HandleTopLevelSingleDecl(*I);
+ }
+ DeclGroupRef::iterator I = D.begin();
+ RewriteForwardClassEpilogue(cast<ObjCInterfaceDecl>(*I), typedefString);
+}
+
+void RewriteModernObjC::RewriteForwardClassDecl(
+ const SmallVectorImpl<Decl *> &D) {
+ std::string typedefString;
+ for (unsigned i = 0; i < D.size(); i++) {
+ ObjCInterfaceDecl *ForwardDecl = cast<ObjCInterfaceDecl>(D[i]);
+ if (i == 0) {
+ typedefString += "// @class ";
+ typedefString += ForwardDecl->getNameAsString();
+ typedefString += ";";
+ }
+ RewriteOneForwardClassDecl(ForwardDecl, typedefString);
+ }
+ RewriteForwardClassEpilogue(cast<ObjCInterfaceDecl>(D[0]), typedefString);
+}
+
+void RewriteModernObjC::RewriteMethodDeclaration(ObjCMethodDecl *Method) {
+ // When method is a synthesized one, such as a getter/setter there is
+ // nothing to rewrite.
+ if (Method->isImplicit())
+ return;
+ SourceLocation LocStart = Method->getLocStart();
+ SourceLocation LocEnd = Method->getLocEnd();
+
+ if (SM->getExpansionLineNumber(LocEnd) >
+ SM->getExpansionLineNumber(LocStart)) {
+ InsertText(LocStart, "#if 0\n");
+ ReplaceText(LocEnd, 1, ";\n#endif\n");
+ } else {
+ InsertText(LocStart, "// ");
+ }
+}
+
+void RewriteModernObjC::RewriteProperty(ObjCPropertyDecl *prop) {
+ SourceLocation Loc = prop->getAtLoc();
+
+ ReplaceText(Loc, 0, "// ");
+ // FIXME: handle properties that are declared across multiple lines.
+}
+
+void RewriteModernObjC::RewriteCategoryDecl(ObjCCategoryDecl *CatDecl) {
+ SourceLocation LocStart = CatDecl->getLocStart();
+
+ // FIXME: handle category headers that are declared across multiple lines.
+ if (CatDecl->getIvarRBraceLoc().isValid()) {
+ ReplaceText(LocStart, 1, "/** ");
+ ReplaceText(CatDecl->getIvarRBraceLoc(), 1, "**/ ");
+ }
+ else {
+ ReplaceText(LocStart, 0, "// ");
+ }
+
+ for (auto *I : CatDecl->properties())
+ RewriteProperty(I);
+
+ for (auto *I : CatDecl->instance_methods())
+ RewriteMethodDeclaration(I);
+ for (auto *I : CatDecl->class_methods())
+ RewriteMethodDeclaration(I);
+
+ // Lastly, comment out the @end.
+ ReplaceText(CatDecl->getAtEndRange().getBegin(),
+ strlen("@end"), "/* @end */\n");
+}
+
+void RewriteModernObjC::RewriteProtocolDecl(ObjCProtocolDecl *PDecl) {
+ SourceLocation LocStart = PDecl->getLocStart();
+ assert(PDecl->isThisDeclarationADefinition());
+
+ // FIXME: handle protocol headers that are declared across multiple lines.
+ ReplaceText(LocStart, 0, "// ");
+
+ for (auto *I : PDecl->instance_methods())
+ RewriteMethodDeclaration(I);
+ for (auto *I : PDecl->class_methods())
+ RewriteMethodDeclaration(I);
+ for (auto *I : PDecl->properties())
+ RewriteProperty(I);
+
+ // Lastly, comment out the @end.
+ SourceLocation LocEnd = PDecl->getAtEndRange().getBegin();
+ ReplaceText(LocEnd, strlen("@end"), "/* @end */\n");
+
+ // Must comment out @optional/@required
+ const char *startBuf = SM->getCharacterData(LocStart);
+ const char *endBuf = SM->getCharacterData(LocEnd);
+ for (const char *p = startBuf; p < endBuf; p++) {
+ if (*p == '@' && !strncmp(p+1, "optional", strlen("optional"))) {
+ SourceLocation OptionalLoc = LocStart.getLocWithOffset(p-startBuf);
+ ReplaceText(OptionalLoc, strlen("@optional"), "/* @optional */");
+
+ }
+ else if (*p == '@' && !strncmp(p+1, "required", strlen("required"))) {
+ SourceLocation OptionalLoc = LocStart.getLocWithOffset(p-startBuf);
+ ReplaceText(OptionalLoc, strlen("@required"), "/* @required */");
+
+ }
+ }
+}
+
+void RewriteModernObjC::RewriteForwardProtocolDecl(DeclGroupRef D) {
+ SourceLocation LocStart = (*D.begin())->getLocStart();
+ if (LocStart.isInvalid())
+ llvm_unreachable("Invalid SourceLocation");
+ // FIXME: handle forward protocol that are declared across multiple lines.
+ ReplaceText(LocStart, 0, "// ");
+}
+
+void
+RewriteModernObjC::RewriteForwardProtocolDecl(const SmallVectorImpl<Decl *> &DG) {
+ SourceLocation LocStart = DG[0]->getLocStart();
+ if (LocStart.isInvalid())
+ llvm_unreachable("Invalid SourceLocation");
+ // FIXME: handle forward protocol that are declared across multiple lines.
+ ReplaceText(LocStart, 0, "// ");
+}
+
+void
+RewriteModernObjC::RewriteLinkageSpec(LinkageSpecDecl *LSD) {
+ SourceLocation LocStart = LSD->getExternLoc();
+ if (LocStart.isInvalid())
+ llvm_unreachable("Invalid extern SourceLocation");
+
+ ReplaceText(LocStart, 0, "// ");
+ if (!LSD->hasBraces())
+ return;
+ // FIXME. We don't rewrite well if '{' is not on same line as 'extern'.
+ SourceLocation LocRBrace = LSD->getRBraceLoc();
+ if (LocRBrace.isInvalid())
+ llvm_unreachable("Invalid rbrace SourceLocation");
+ ReplaceText(LocRBrace, 0, "// ");
+}
+
+void RewriteModernObjC::RewriteTypeIntoString(QualType T, std::string &ResultStr,
+ const FunctionType *&FPRetType) {
+ if (T->isObjCQualifiedIdType())
+ ResultStr += "id";
+ else if (T->isFunctionPointerType() ||
+ T->isBlockPointerType()) {
+ // needs special handling, since pointer-to-functions have special
+ // syntax (where a decaration models use).
+ QualType retType = T;
+ QualType PointeeTy;
+ if (const PointerType* PT = retType->getAs<PointerType>())
+ PointeeTy = PT->getPointeeType();
+ else if (const BlockPointerType *BPT = retType->getAs<BlockPointerType>())
+ PointeeTy = BPT->getPointeeType();
+ if ((FPRetType = PointeeTy->getAs<FunctionType>())) {
+ ResultStr +=
+ FPRetType->getReturnType().getAsString(Context->getPrintingPolicy());
+ ResultStr += "(*";
+ }
+ } else
+ ResultStr += T.getAsString(Context->getPrintingPolicy());
+}
+
+void RewriteModernObjC::RewriteObjCMethodDecl(const ObjCInterfaceDecl *IDecl,
+ ObjCMethodDecl *OMD,
+ std::string &ResultStr) {
+ //fprintf(stderr,"In RewriteObjCMethodDecl\n");
+ const FunctionType *FPRetType = nullptr;
+ ResultStr += "\nstatic ";
+ RewriteTypeIntoString(OMD->getReturnType(), ResultStr, FPRetType);
+ ResultStr += " ";
+
+ // Unique method name
+ std::string NameStr;
+
+ if (OMD->isInstanceMethod())
+ NameStr += "_I_";
+ else
+ NameStr += "_C_";
+
+ NameStr += IDecl->getNameAsString();
+ NameStr += "_";
+
+ if (ObjCCategoryImplDecl *CID =
+ dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext())) {
+ NameStr += CID->getNameAsString();
+ NameStr += "_";
+ }
+ // Append selector names, replacing ':' with '_'
+ {
+ std::string selString = OMD->getSelector().getAsString();
+ int len = selString.size();
+ for (int i = 0; i < len; i++)
+ if (selString[i] == ':')
+ selString[i] = '_';
+ NameStr += selString;
+ }
+ // Remember this name for metadata emission
+ MethodInternalNames[OMD] = NameStr;
+ ResultStr += NameStr;
+
+ // Rewrite arguments
+ ResultStr += "(";
+
+ // invisible arguments
+ if (OMD->isInstanceMethod()) {
+ QualType selfTy = Context->getObjCInterfaceType(IDecl);
+ selfTy = Context->getPointerType(selfTy);
+ if (!LangOpts.MicrosoftExt) {
+ if (ObjCSynthesizedStructs.count(const_cast<ObjCInterfaceDecl*>(IDecl)))
+ ResultStr += "struct ";
+ }
+ // When rewriting for Microsoft, explicitly omit the structure name.
+ ResultStr += IDecl->getNameAsString();
+ ResultStr += " *";
+ }
+ else
+ ResultStr += Context->getObjCClassType().getAsString(
+ Context->getPrintingPolicy());
+
+ ResultStr += " self, ";
+ ResultStr += Context->getObjCSelType().getAsString(Context->getPrintingPolicy());
+ ResultStr += " _cmd";
+
+ // Method arguments.
+ for (const auto *PDecl : OMD->params()) {
+ ResultStr += ", ";
+ if (PDecl->getType()->isObjCQualifiedIdType()) {
+ ResultStr += "id ";
+ ResultStr += PDecl->getNameAsString();
+ } else {
+ std::string Name = PDecl->getNameAsString();
+ QualType QT = PDecl->getType();
+ // Make sure we convert "t (^)(...)" to "t (*)(...)".
+ (void)convertBlockPointerToFunctionPointer(QT);
+ QT.getAsStringInternal(Name, Context->getPrintingPolicy());
+ ResultStr += Name;
+ }
+ }
+ if (OMD->isVariadic())
+ ResultStr += ", ...";
+ ResultStr += ") ";
+
+ if (FPRetType) {
+ ResultStr += ")"; // close the precedence "scope" for "*".
+
+ // Now, emit the argument types (if any).
+ if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)) {
+ ResultStr += "(";
+ for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
+ if (i) ResultStr += ", ";
+ std::string ParamStr =
+ FT->getParamType(i).getAsString(Context->getPrintingPolicy());
+ ResultStr += ParamStr;
+ }
+ if (FT->isVariadic()) {
+ if (FT->getNumParams())
+ ResultStr += ", ";
+ ResultStr += "...";
+ }
+ ResultStr += ")";
+ } else {
+ ResultStr += "()";
+ }
+ }
+}
+void RewriteModernObjC::RewriteImplementationDecl(Decl *OID) {
+ ObjCImplementationDecl *IMD = dyn_cast<ObjCImplementationDecl>(OID);
+ ObjCCategoryImplDecl *CID = dyn_cast<ObjCCategoryImplDecl>(OID);
+
+ if (IMD) {
+ if (IMD->getIvarRBraceLoc().isValid()) {
+ ReplaceText(IMD->getLocStart(), 1, "/** ");
+ ReplaceText(IMD->getIvarRBraceLoc(), 1, "**/ ");
+ }
+ else {
+ InsertText(IMD->getLocStart(), "// ");
+ }
+ }
+ else
+ InsertText(CID->getLocStart(), "// ");
+
+ for (auto *OMD : IMD ? IMD->instance_methods() : CID->instance_methods()) {
+ std::string ResultStr;
+ RewriteObjCMethodDecl(OMD->getClassInterface(), OMD, ResultStr);
+ SourceLocation LocStart = OMD->getLocStart();
+ SourceLocation LocEnd = OMD->getCompoundBody()->getLocStart();
+
+ const char *startBuf = SM->getCharacterData(LocStart);
+ const char *endBuf = SM->getCharacterData(LocEnd);
+ ReplaceText(LocStart, endBuf-startBuf, ResultStr);
+ }
+
+ for (auto *OMD : IMD ? IMD->class_methods() : CID->class_methods()) {
+ std::string ResultStr;
+ RewriteObjCMethodDecl(OMD->getClassInterface(), OMD, ResultStr);
+ SourceLocation LocStart = OMD->getLocStart();
+ SourceLocation LocEnd = OMD->getCompoundBody()->getLocStart();
+
+ const char *startBuf = SM->getCharacterData(LocStart);
+ const char *endBuf = SM->getCharacterData(LocEnd);
+ ReplaceText(LocStart, endBuf-startBuf, ResultStr);
+ }
+ for (auto *I : IMD ? IMD->property_impls() : CID->property_impls())
+ RewritePropertyImplDecl(I, IMD, CID);
+
+ InsertText(IMD ? IMD->getLocEnd() : CID->getLocEnd(), "// ");
+}
+
+void RewriteModernObjC::RewriteInterfaceDecl(ObjCInterfaceDecl *ClassDecl) {
+ // Do not synthesize more than once.
+ if (ObjCSynthesizedStructs.count(ClassDecl))
+ return;
+ // Make sure super class's are written before current class is written.
+ ObjCInterfaceDecl *SuperClass = ClassDecl->getSuperClass();
+ while (SuperClass) {
+ RewriteInterfaceDecl(SuperClass);
+ SuperClass = SuperClass->getSuperClass();
+ }
+ std::string ResultStr;
+ if (!ObjCWrittenInterfaces.count(ClassDecl->getCanonicalDecl())) {
+ // we haven't seen a forward decl - generate a typedef.
+ RewriteOneForwardClassDecl(ClassDecl, ResultStr);
+ RewriteIvarOffsetSymbols(ClassDecl, ResultStr);
+
+ RewriteObjCInternalStruct(ClassDecl, ResultStr);
+ // Mark this typedef as having been written into its c++ equivalent.
+ ObjCWrittenInterfaces.insert(ClassDecl->getCanonicalDecl());
+
+ for (auto *I : ClassDecl->properties())
+ RewriteProperty(I);
+ for (auto *I : ClassDecl->instance_methods())
+ RewriteMethodDeclaration(I);
+ for (auto *I : ClassDecl->class_methods())
+ RewriteMethodDeclaration(I);
+
+ // Lastly, comment out the @end.
+ ReplaceText(ClassDecl->getAtEndRange().getBegin(), strlen("@end"),
+ "/* @end */\n");
+ }
+}
+
+Stmt *RewriteModernObjC::RewritePropertyOrImplicitSetter(PseudoObjectExpr *PseudoOp) {
+ SourceRange OldRange = PseudoOp->getSourceRange();
+
+ // We just magically know some things about the structure of this
+ // expression.
+ ObjCMessageExpr *OldMsg =
+ cast<ObjCMessageExpr>(PseudoOp->getSemanticExpr(
+ PseudoOp->getNumSemanticExprs() - 1));
+
+ // Because the rewriter doesn't allow us to rewrite rewritten code,
+ // we need to suppress rewriting the sub-statements.
+ Expr *Base;
+ SmallVector<Expr*, 2> Args;
+ {
+ DisableReplaceStmtScope S(*this);
+
+ // Rebuild the base expression if we have one.
+ Base = nullptr;
+ if (OldMsg->getReceiverKind() == ObjCMessageExpr::Instance) {
+ Base = OldMsg->getInstanceReceiver();
+ Base = cast<OpaqueValueExpr>(Base)->getSourceExpr();
+ Base = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Base));
+ }
+
+ unsigned numArgs = OldMsg->getNumArgs();
+ for (unsigned i = 0; i < numArgs; i++) {
+ Expr *Arg = OldMsg->getArg(i);
+ if (isa<OpaqueValueExpr>(Arg))
+ Arg = cast<OpaqueValueExpr>(Arg)->getSourceExpr();
+ Arg = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Arg));
+ Args.push_back(Arg);
+ }
+ }
+
+ // TODO: avoid this copy.
+ SmallVector<SourceLocation, 1> SelLocs;
+ OldMsg->getSelectorLocs(SelLocs);
+
+ ObjCMessageExpr *NewMsg = nullptr;
+ switch (OldMsg->getReceiverKind()) {
+ case ObjCMessageExpr::Class:
+ NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
+ OldMsg->getValueKind(),
+ OldMsg->getLeftLoc(),
+ OldMsg->getClassReceiverTypeInfo(),
+ OldMsg->getSelector(),
+ SelLocs,
+ OldMsg->getMethodDecl(),
+ Args,
+ OldMsg->getRightLoc(),
+ OldMsg->isImplicit());
+ break;
+
+ case ObjCMessageExpr::Instance:
+ NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
+ OldMsg->getValueKind(),
+ OldMsg->getLeftLoc(),
+ Base,
+ OldMsg->getSelector(),
+ SelLocs,
+ OldMsg->getMethodDecl(),
+ Args,
+ OldMsg->getRightLoc(),
+ OldMsg->isImplicit());
+ break;
+
+ case ObjCMessageExpr::SuperClass:
+ case ObjCMessageExpr::SuperInstance:
+ NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
+ OldMsg->getValueKind(),
+ OldMsg->getLeftLoc(),
+ OldMsg->getSuperLoc(),
+ OldMsg->getReceiverKind() == ObjCMessageExpr::SuperInstance,
+ OldMsg->getSuperType(),
+ OldMsg->getSelector(),
+ SelLocs,
+ OldMsg->getMethodDecl(),
+ Args,
+ OldMsg->getRightLoc(),
+ OldMsg->isImplicit());
+ break;
+ }
+
+ Stmt *Replacement = SynthMessageExpr(NewMsg);
+ ReplaceStmtWithRange(PseudoOp, Replacement, OldRange);
+ return Replacement;
+}
+
+Stmt *RewriteModernObjC::RewritePropertyOrImplicitGetter(PseudoObjectExpr *PseudoOp) {
+ SourceRange OldRange = PseudoOp->getSourceRange();
+
+ // We just magically know some things about the structure of this
+ // expression.
+ ObjCMessageExpr *OldMsg =
+ cast<ObjCMessageExpr>(PseudoOp->getResultExpr()->IgnoreImplicit());
+
+ // Because the rewriter doesn't allow us to rewrite rewritten code,
+ // we need to suppress rewriting the sub-statements.
+ Expr *Base = nullptr;
+ SmallVector<Expr*, 1> Args;
+ {
+ DisableReplaceStmtScope S(*this);
+ // Rebuild the base expression if we have one.
+ if (OldMsg->getReceiverKind() == ObjCMessageExpr::Instance) {
+ Base = OldMsg->getInstanceReceiver();
+ Base = cast<OpaqueValueExpr>(Base)->getSourceExpr();
+ Base = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Base));
+ }
+ unsigned numArgs = OldMsg->getNumArgs();
+ for (unsigned i = 0; i < numArgs; i++) {
+ Expr *Arg = OldMsg->getArg(i);
+ if (isa<OpaqueValueExpr>(Arg))
+ Arg = cast<OpaqueValueExpr>(Arg)->getSourceExpr();
+ Arg = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Arg));
+ Args.push_back(Arg);
+ }
+ }
+
+ // Intentionally empty.
+ SmallVector<SourceLocation, 1> SelLocs;
+
+ ObjCMessageExpr *NewMsg = nullptr;
+ switch (OldMsg->getReceiverKind()) {
+ case ObjCMessageExpr::Class:
+ NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
+ OldMsg->getValueKind(),
+ OldMsg->getLeftLoc(),
+ OldMsg->getClassReceiverTypeInfo(),
+ OldMsg->getSelector(),
+ SelLocs,
+ OldMsg->getMethodDecl(),
+ Args,
+ OldMsg->getRightLoc(),
+ OldMsg->isImplicit());
+ break;
+
+ case ObjCMessageExpr::Instance:
+ NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
+ OldMsg->getValueKind(),
+ OldMsg->getLeftLoc(),
+ Base,
+ OldMsg->getSelector(),
+ SelLocs,
+ OldMsg->getMethodDecl(),
+ Args,
+ OldMsg->getRightLoc(),
+ OldMsg->isImplicit());
+ break;
+
+ case ObjCMessageExpr::SuperClass:
+ case ObjCMessageExpr::SuperInstance:
+ NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
+ OldMsg->getValueKind(),
+ OldMsg->getLeftLoc(),
+ OldMsg->getSuperLoc(),
+ OldMsg->getReceiverKind() == ObjCMessageExpr::SuperInstance,
+ OldMsg->getSuperType(),
+ OldMsg->getSelector(),
+ SelLocs,
+ OldMsg->getMethodDecl(),
+ Args,
+ OldMsg->getRightLoc(),
+ OldMsg->isImplicit());
+ break;
+ }
+
+ Stmt *Replacement = SynthMessageExpr(NewMsg);
+ ReplaceStmtWithRange(PseudoOp, Replacement, OldRange);
+ return Replacement;
+}
+
+/// SynthCountByEnumWithState - To print:
+/// ((NSUInteger (*)
+/// (id, SEL, struct __objcFastEnumerationState *, id *, NSUInteger))
+/// (void *)objc_msgSend)((id)l_collection,
+/// sel_registerName(
+/// "countByEnumeratingWithState:objects:count:"),
+/// &enumState,
+/// (id *)__rw_items, (NSUInteger)16)
+///
+void RewriteModernObjC::SynthCountByEnumWithState(std::string &buf) {
+ buf += "((_WIN_NSUInteger (*) (id, SEL, struct __objcFastEnumerationState *, "
+ "id *, _WIN_NSUInteger))(void *)objc_msgSend)";
+ buf += "\n\t\t";
+ buf += "((id)l_collection,\n\t\t";
+ buf += "sel_registerName(\"countByEnumeratingWithState:objects:count:\"),";
+ buf += "\n\t\t";
+ buf += "&enumState, "
+ "(id *)__rw_items, (_WIN_NSUInteger)16)";
+}
+
+/// RewriteBreakStmt - Rewrite for a break-stmt inside an ObjC2's foreach
+/// statement to exit to its outer synthesized loop.
+///
+Stmt *RewriteModernObjC::RewriteBreakStmt(BreakStmt *S) {
+ if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
+ return S;
+ // replace break with goto __break_label
+ std::string buf;
+
+ SourceLocation startLoc = S->getLocStart();
+ buf = "goto __break_label_";
+ buf += utostr(ObjCBcLabelNo.back());
+ ReplaceText(startLoc, strlen("break"), buf);
+
+ return nullptr;
+}
+
+void RewriteModernObjC::ConvertSourceLocationToLineDirective(
+ SourceLocation Loc,
+ std::string &LineString) {
+ if (Loc.isFileID() && GenerateLineInfo) {
+ LineString += "\n#line ";
+ PresumedLoc PLoc = SM->getPresumedLoc(Loc);
+ LineString += utostr(PLoc.getLine());
+ LineString += " \"";
+ LineString += Lexer::Stringify(PLoc.getFilename());
+ LineString += "\"\n";
+ }
+}
+
+/// RewriteContinueStmt - Rewrite for a continue-stmt inside an ObjC2's foreach
+/// statement to continue with its inner synthesized loop.
+///
+Stmt *RewriteModernObjC::RewriteContinueStmt(ContinueStmt *S) {
+ if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
+ return S;
+ // replace continue with goto __continue_label
+ std::string buf;
+
+ SourceLocation startLoc = S->getLocStart();
+ buf = "goto __continue_label_";
+ buf += utostr(ObjCBcLabelNo.back());
+ ReplaceText(startLoc, strlen("continue"), buf);
+
+ return nullptr;
+}
+
+/// RewriteObjCForCollectionStmt - Rewriter for ObjC2's foreach statement.
+/// It rewrites:
+/// for ( type elem in collection) { stmts; }
+
+/// Into:
+/// {
+/// type elem;
+/// struct __objcFastEnumerationState enumState = { 0 };
+/// id __rw_items[16];
+/// id l_collection = (id)collection;
+/// NSUInteger limit = [l_collection countByEnumeratingWithState:&enumState
+/// objects:__rw_items count:16];
+/// if (limit) {
+/// unsigned long startMutations = *enumState.mutationsPtr;
+/// do {
+/// unsigned long counter = 0;
+/// do {
+/// if (startMutations != *enumState.mutationsPtr)
+/// objc_enumerationMutation(l_collection);
+/// elem = (type)enumState.itemsPtr[counter++];
+/// stmts;
+/// __continue_label: ;
+/// } while (counter < limit);
+/// } while ((limit = [l_collection countByEnumeratingWithState:&enumState
+/// objects:__rw_items count:16]));
+/// elem = nil;
+/// __break_label: ;
+/// }
+/// else
+/// elem = nil;
+/// }
+///
+Stmt *RewriteModernObjC::RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S,
+ SourceLocation OrigEnd) {
+ assert(!Stmts.empty() && "ObjCForCollectionStmt - Statement stack empty");
+ assert(isa<ObjCForCollectionStmt>(Stmts.back()) &&
+ "ObjCForCollectionStmt Statement stack mismatch");
+ assert(!ObjCBcLabelNo.empty() &&
+ "ObjCForCollectionStmt - Label No stack empty");
+
+ SourceLocation startLoc = S->getLocStart();
+ const char *startBuf = SM->getCharacterData(startLoc);
+ StringRef elementName;
+ std::string elementTypeAsString;
+ std::string buf;
+ // line directive first.
+ SourceLocation ForEachLoc = S->getForLoc();
+ ConvertSourceLocationToLineDirective(ForEachLoc, buf);
+ buf += "{\n\t";
+ if (DeclStmt *DS = dyn_cast<DeclStmt>(S->getElement())) {
+ // type elem;
+ NamedDecl* D = cast<NamedDecl>(DS->getSingleDecl());
+ QualType ElementType = cast<ValueDecl>(D)->getType();
+ if (ElementType->isObjCQualifiedIdType() ||
+ ElementType->isObjCQualifiedInterfaceType())
+ // Simply use 'id' for all qualified types.
+ elementTypeAsString = "id";
+ else
+ elementTypeAsString = ElementType.getAsString(Context->getPrintingPolicy());
+ buf += elementTypeAsString;
+ buf += " ";
+ elementName = D->getName();
+ buf += elementName;
+ buf += ";\n\t";
+ }
+ else {
+ DeclRefExpr *DR = cast<DeclRefExpr>(S->getElement());
+ elementName = DR->getDecl()->getName();
+ ValueDecl *VD = cast<ValueDecl>(DR->getDecl());
+ if (VD->getType()->isObjCQualifiedIdType() ||
+ VD->getType()->isObjCQualifiedInterfaceType())
+ // Simply use 'id' for all qualified types.
+ elementTypeAsString = "id";
+ else
+ elementTypeAsString = VD->getType().getAsString(Context->getPrintingPolicy());
+ }
+
+ // struct __objcFastEnumerationState enumState = { 0 };
+ buf += "struct __objcFastEnumerationState enumState = { 0 };\n\t";
+ // id __rw_items[16];
+ buf += "id __rw_items[16];\n\t";
+ // id l_collection = (id)
+ buf += "id l_collection = (id)";
+ // Find start location of 'collection' the hard way!
+ const char *startCollectionBuf = startBuf;
+ startCollectionBuf += 3; // skip 'for'
+ startCollectionBuf = strchr(startCollectionBuf, '(');
+ startCollectionBuf++; // skip '('
+ // find 'in' and skip it.
+ while (*startCollectionBuf != ' ' ||
+ *(startCollectionBuf+1) != 'i' || *(startCollectionBuf+2) != 'n' ||
+ (*(startCollectionBuf+3) != ' ' &&
+ *(startCollectionBuf+3) != '[' && *(startCollectionBuf+3) != '('))
+ startCollectionBuf++;
+ startCollectionBuf += 3;
+
+ // Replace: "for (type element in" with string constructed thus far.
+ ReplaceText(startLoc, startCollectionBuf - startBuf, buf);
+ // Replace ')' in for '(' type elem in collection ')' with ';'
+ SourceLocation rightParenLoc = S->getRParenLoc();
+ const char *rparenBuf = SM->getCharacterData(rightParenLoc);
+ SourceLocation lparenLoc = startLoc.getLocWithOffset(rparenBuf-startBuf);
+ buf = ";\n\t";
+
+ // unsigned long limit = [l_collection countByEnumeratingWithState:&enumState
+ // objects:__rw_items count:16];
+ // which is synthesized into:
+ // NSUInteger limit =
+ // ((NSUInteger (*)
+ // (id, SEL, struct __objcFastEnumerationState *, id *, NSUInteger))
+ // (void *)objc_msgSend)((id)l_collection,
+ // sel_registerName(
+ // "countByEnumeratingWithState:objects:count:"),
+ // (struct __objcFastEnumerationState *)&state,
+ // (id *)__rw_items, (NSUInteger)16);
+ buf += "_WIN_NSUInteger limit =\n\t\t";
+ SynthCountByEnumWithState(buf);
+ buf += ";\n\t";
+ /// if (limit) {
+ /// unsigned long startMutations = *enumState.mutationsPtr;
+ /// do {
+ /// unsigned long counter = 0;
+ /// do {
+ /// if (startMutations != *enumState.mutationsPtr)
+ /// objc_enumerationMutation(l_collection);
+ /// elem = (type)enumState.itemsPtr[counter++];
+ buf += "if (limit) {\n\t";
+ buf += "unsigned long startMutations = *enumState.mutationsPtr;\n\t";
+ buf += "do {\n\t\t";
+ buf += "unsigned long counter = 0;\n\t\t";
+ buf += "do {\n\t\t\t";
+ buf += "if (startMutations != *enumState.mutationsPtr)\n\t\t\t\t";
+ buf += "objc_enumerationMutation(l_collection);\n\t\t\t";
+ buf += elementName;
+ buf += " = (";
+ buf += elementTypeAsString;
+ buf += ")enumState.itemsPtr[counter++];";
+ // Replace ')' in for '(' type elem in collection ')' with all of these.
+ ReplaceText(lparenLoc, 1, buf);
+
+ /// __continue_label: ;
+ /// } while (counter < limit);
+ /// } while ((limit = [l_collection countByEnumeratingWithState:&enumState
+ /// objects:__rw_items count:16]));
+ /// elem = nil;
+ /// __break_label: ;
+ /// }
+ /// else
+ /// elem = nil;
+ /// }
+ ///
+ buf = ";\n\t";
+ buf += "__continue_label_";
+ buf += utostr(ObjCBcLabelNo.back());
+ buf += ": ;";
+ buf += "\n\t\t";
+ buf += "} while (counter < limit);\n\t";
+ buf += "} while ((limit = ";
+ SynthCountByEnumWithState(buf);
+ buf += "));\n\t";
+ buf += elementName;
+ buf += " = ((";
+ buf += elementTypeAsString;
+ buf += ")0);\n\t";
+ buf += "__break_label_";
+ buf += utostr(ObjCBcLabelNo.back());
+ buf += ": ;\n\t";
+ buf += "}\n\t";
+ buf += "else\n\t\t";
+ buf += elementName;
+ buf += " = ((";
+ buf += elementTypeAsString;
+ buf += ")0);\n\t";
+ buf += "}\n";
+
+ // Insert all these *after* the statement body.
+ // FIXME: If this should support Obj-C++, support CXXTryStmt
+ if (isa<CompoundStmt>(S->getBody())) {
+ SourceLocation endBodyLoc = OrigEnd.getLocWithOffset(1);
+ InsertText(endBodyLoc, buf);
+ } else {
+ /* Need to treat single statements specially. For example:
+ *
+ * for (A *a in b) if (stuff()) break;
+ * for (A *a in b) xxxyy;
+ *
+ * The following code simply scans ahead to the semi to find the actual end.
+ */
+ const char *stmtBuf = SM->getCharacterData(OrigEnd);
+ const char *semiBuf = strchr(stmtBuf, ';');
+ assert(semiBuf && "Can't find ';'");
+ SourceLocation endBodyLoc = OrigEnd.getLocWithOffset(semiBuf-stmtBuf+1);
+ InsertText(endBodyLoc, buf);
+ }
+ Stmts.pop_back();
+ ObjCBcLabelNo.pop_back();
+ return nullptr;
+}
+
+static void Write_RethrowObject(std::string &buf) {
+ buf += "{ struct _FIN { _FIN(id reth) : rethrow(reth) {}\n";
+ buf += "\t~_FIN() { if (rethrow) objc_exception_throw(rethrow); }\n";
+ buf += "\tid rethrow;\n";
+ buf += "\t} _fin_force_rethow(_rethrow);";
+}
+
+/// RewriteObjCSynchronizedStmt -
+/// This routine rewrites @synchronized(expr) stmt;
+/// into:
+/// objc_sync_enter(expr);
+/// @try stmt @finally { objc_sync_exit(expr); }
+///
+Stmt *RewriteModernObjC::RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
+ // Get the start location and compute the semi location.
+ SourceLocation startLoc = S->getLocStart();
+ const char *startBuf = SM->getCharacterData(startLoc);
+
+ assert((*startBuf == '@') && "bogus @synchronized location");
+
+ std::string buf;
+ SourceLocation SynchLoc = S->getAtSynchronizedLoc();
+ ConvertSourceLocationToLineDirective(SynchLoc, buf);
+ buf += "{ id _rethrow = 0; id _sync_obj = (id)";
+
+ const char *lparenBuf = startBuf;
+ while (*lparenBuf != '(') lparenBuf++;
+ ReplaceText(startLoc, lparenBuf-startBuf+1, buf);
+
+ buf = "; objc_sync_enter(_sync_obj);\n";
+ buf += "try {\n\tstruct _SYNC_EXIT { _SYNC_EXIT(id arg) : sync_exit(arg) {}";
+ buf += "\n\t~_SYNC_EXIT() {objc_sync_exit(sync_exit);}";
+ buf += "\n\tid sync_exit;";
+ buf += "\n\t} _sync_exit(_sync_obj);\n";
+
+ // We can't use S->getSynchExpr()->getLocEnd() to find the end location, since
+ // the sync expression is typically a message expression that's already
+ // been rewritten! (which implies the SourceLocation's are invalid).
+ SourceLocation RParenExprLoc = S->getSynchBody()->getLocStart();
+ const char *RParenExprLocBuf = SM->getCharacterData(RParenExprLoc);
+ while (*RParenExprLocBuf != ')') RParenExprLocBuf--;
+ RParenExprLoc = startLoc.getLocWithOffset(RParenExprLocBuf-startBuf);
+
+ SourceLocation LBranceLoc = S->getSynchBody()->getLocStart();
+ const char *LBraceLocBuf = SM->getCharacterData(LBranceLoc);
+ assert (*LBraceLocBuf == '{');
+ ReplaceText(RParenExprLoc, (LBraceLocBuf - SM->getCharacterData(RParenExprLoc) + 1), buf);
+
+ SourceLocation startRBraceLoc = S->getSynchBody()->getLocEnd();
+ assert((*SM->getCharacterData(startRBraceLoc) == '}') &&
+ "bogus @synchronized block");
+
+ buf = "} catch (id e) {_rethrow = e;}\n";
+ Write_RethrowObject(buf);
+ buf += "}\n";
+ buf += "}\n";
+
+ ReplaceText(startRBraceLoc, 1, buf);
+
+ return nullptr;
+}
+
+void RewriteModernObjC::WarnAboutReturnGotoStmts(Stmt *S)
+{
+ // Perform a bottom up traversal of all children.
+ for (Stmt::child_range CI = S->children(); CI; ++CI)
+ if (*CI)
+ WarnAboutReturnGotoStmts(*CI);
+
+ if (isa<ReturnStmt>(S) || isa<GotoStmt>(S)) {
+ Diags.Report(Context->getFullLoc(S->getLocStart()),
+ TryFinallyContainsReturnDiag);
+ }
+ return;
+}
+
+Stmt *RewriteModernObjC::RewriteObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S) {
+ SourceLocation startLoc = S->getAtLoc();
+ ReplaceText(startLoc, strlen("@autoreleasepool"), "/* @autoreleasepool */");
+ ReplaceText(S->getSubStmt()->getLocStart(), 1,
+ "{ __AtAutoreleasePool __autoreleasepool; ");
+
+ return nullptr;
+}
+
+Stmt *RewriteModernObjC::RewriteObjCTryStmt(ObjCAtTryStmt *S) {
+ ObjCAtFinallyStmt *finalStmt = S->getFinallyStmt();
+ bool noCatch = S->getNumCatchStmts() == 0;
+ std::string buf;
+ SourceLocation TryLocation = S->getAtTryLoc();
+ ConvertSourceLocationToLineDirective(TryLocation, buf);
+
+ if (finalStmt) {
+ if (noCatch)
+ buf += "{ id volatile _rethrow = 0;\n";
+ else {
+ buf += "{ id volatile _rethrow = 0;\ntry {\n";
+ }
+ }
+ // Get the start location and compute the semi location.
+ SourceLocation startLoc = S->getLocStart();
+ const char *startBuf = SM->getCharacterData(startLoc);
+
+ assert((*startBuf == '@') && "bogus @try location");
+ if (finalStmt)
+ ReplaceText(startLoc, 1, buf);
+ else
+ // @try -> try
+ ReplaceText(startLoc, 1, "");
+
+ for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I) {
+ ObjCAtCatchStmt *Catch = S->getCatchStmt(I);
+ VarDecl *catchDecl = Catch->getCatchParamDecl();
+
+ startLoc = Catch->getLocStart();
+ bool AtRemoved = false;
+ if (catchDecl) {
+ QualType t = catchDecl->getType();
+ if (const ObjCObjectPointerType *Ptr = t->getAs<ObjCObjectPointerType>()) {
+ // Should be a pointer to a class.
+ ObjCInterfaceDecl *IDecl = Ptr->getObjectType()->getInterface();
+ if (IDecl) {
+ std::string Result;
+ ConvertSourceLocationToLineDirective(Catch->getLocStart(), Result);
+
+ startBuf = SM->getCharacterData(startLoc);
+ assert((*startBuf == '@') && "bogus @catch location");
+ SourceLocation rParenLoc = Catch->getRParenLoc();
+ const char *rParenBuf = SM->getCharacterData(rParenLoc);
+
+ // _objc_exc_Foo *_e as argument to catch.
+ Result += "catch (_objc_exc_"; Result += IDecl->getNameAsString();
+ Result += " *_"; Result += catchDecl->getNameAsString();
+ Result += ")";
+ ReplaceText(startLoc, rParenBuf-startBuf+1, Result);
+ // Foo *e = (Foo *)_e;
+ Result.clear();
+ Result = "{ ";
+ Result += IDecl->getNameAsString();
+ Result += " *"; Result += catchDecl->getNameAsString();
+ Result += " = ("; Result += IDecl->getNameAsString(); Result += "*)";
+ Result += "_"; Result += catchDecl->getNameAsString();
+
+ Result += "; ";
+ SourceLocation lBraceLoc = Catch->getCatchBody()->getLocStart();
+ ReplaceText(lBraceLoc, 1, Result);
+ AtRemoved = true;
+ }
+ }
+ }
+ if (!AtRemoved)
+ // @catch -> catch
+ ReplaceText(startLoc, 1, "");
+
+ }
+ if (finalStmt) {
+ buf.clear();
+ SourceLocation FinallyLoc = finalStmt->getLocStart();
+
+ if (noCatch) {
+ ConvertSourceLocationToLineDirective(FinallyLoc, buf);
+ buf += "catch (id e) {_rethrow = e;}\n";
+ }
+ else {
+ buf += "}\n";
+ ConvertSourceLocationToLineDirective(FinallyLoc, buf);
+ buf += "catch (id e) {_rethrow = e;}\n";
+ }
+
+ SourceLocation startFinalLoc = finalStmt->getLocStart();
+ ReplaceText(startFinalLoc, 8, buf);
+ Stmt *body = finalStmt->getFinallyBody();
+ SourceLocation startFinalBodyLoc = body->getLocStart();
+ buf.clear();
+ Write_RethrowObject(buf);
+ ReplaceText(startFinalBodyLoc, 1, buf);
+
+ SourceLocation endFinalBodyLoc = body->getLocEnd();
+ ReplaceText(endFinalBodyLoc, 1, "}\n}");
+ // Now check for any return/continue/go statements within the @try.
+ WarnAboutReturnGotoStmts(S->getTryBody());
+ }
+
+ return nullptr;
+}
+
+// This can't be done with ReplaceStmt(S, ThrowExpr), since
+// the throw expression is typically a message expression that's already
+// been rewritten! (which implies the SourceLocation's are invalid).
+Stmt *RewriteModernObjC::RewriteObjCThrowStmt(ObjCAtThrowStmt *S) {
+ // Get the start location and compute the semi location.
+ SourceLocation startLoc = S->getLocStart();
+ const char *startBuf = SM->getCharacterData(startLoc);
+
+ assert((*startBuf == '@') && "bogus @throw location");
+
+ std::string buf;
+ /* void objc_exception_throw(id) __attribute__((noreturn)); */
+ if (S->getThrowExpr())
+ buf = "objc_exception_throw(";
+ else
+ buf = "throw";
+
+ // handle "@ throw" correctly.
+ const char *wBuf = strchr(startBuf, 'w');
+ assert((*wBuf == 'w') && "@throw: can't find 'w'");
+ ReplaceText(startLoc, wBuf-startBuf+1, buf);
+
+ SourceLocation endLoc = S->getLocEnd();
+ const char *endBuf = SM->getCharacterData(endLoc);
+ const char *semiBuf = strchr(endBuf, ';');
+ assert((*semiBuf == ';') && "@throw: can't find ';'");
+ SourceLocation semiLoc = startLoc.getLocWithOffset(semiBuf-startBuf);
+ if (S->getThrowExpr())
+ ReplaceText(semiLoc, 1, ");");
+ return nullptr;
+}
+
+Stmt *RewriteModernObjC::RewriteAtEncode(ObjCEncodeExpr *Exp) {
+ // Create a new string expression.
+ std::string StrEncoding;
+ Context->getObjCEncodingForType(Exp->getEncodedType(), StrEncoding);
+ Expr *Replacement = getStringLiteral(StrEncoding);
+ ReplaceStmt(Exp, Replacement);
+
+ // Replace this subexpr in the parent.
+ // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
+ return Replacement;
+}
+
+Stmt *RewriteModernObjC::RewriteAtSelector(ObjCSelectorExpr *Exp) {
+ if (!SelGetUidFunctionDecl)
+ SynthSelGetUidFunctionDecl();
+ assert(SelGetUidFunctionDecl && "Can't find sel_registerName() decl");
+ // Create a call to sel_registerName("selName").
+ SmallVector<Expr*, 8> SelExprs;
+ SelExprs.push_back(getStringLiteral(Exp->getSelector().getAsString()));
+ CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
+ &SelExprs[0], SelExprs.size());
+ ReplaceStmt(Exp, SelExp);
+ // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
+ return SelExp;
+}
+
+CallExpr *RewriteModernObjC::SynthesizeCallToFunctionDecl(
+ FunctionDecl *FD, Expr **args, unsigned nargs, SourceLocation StartLoc,
+ SourceLocation EndLoc) {
+ // Get the type, we will need to reference it in a couple spots.
+ QualType msgSendType = FD->getType();
+
+ // Create a reference to the objc_msgSend() declaration.
+ DeclRefExpr *DRE =
+ new (Context) DeclRefExpr(FD, false, msgSendType, VK_LValue, SourceLocation());
+
+ // Now, we cast the reference to a pointer to the objc_msgSend type.
+ QualType pToFunc = Context->getPointerType(msgSendType);
+ ImplicitCastExpr *ICE =
+ ImplicitCastExpr::Create(*Context, pToFunc, CK_FunctionToPointerDecay,
+ DRE, nullptr, VK_RValue);
+
+ const FunctionType *FT = msgSendType->getAs<FunctionType>();
+
+ CallExpr *Exp =
+ new (Context) CallExpr(*Context, ICE, llvm::makeArrayRef(args, nargs),
+ FT->getCallResultType(*Context),
+ VK_RValue, EndLoc);
+ return Exp;
+}
+
+static bool scanForProtocolRefs(const char *startBuf, const char *endBuf,
+ const char *&startRef, const char *&endRef) {
+ while (startBuf < endBuf) {
+ if (*startBuf == '<')
+ startRef = startBuf; // mark the start.
+ if (*startBuf == '>') {
+ if (startRef && *startRef == '<') {
+ endRef = startBuf; // mark the end.
+ return true;
+ }
+ return false;
+ }
+ startBuf++;
+ }
+ return false;
+}
+
+static void scanToNextArgument(const char *&argRef) {
+ int angle = 0;
+ while (*argRef != ')' && (*argRef != ',' || angle > 0)) {
+ if (*argRef == '<')
+ angle++;
+ else if (*argRef == '>')
+ angle--;
+ argRef++;
+ }
+ assert(angle == 0 && "scanToNextArgument - bad protocol type syntax");
+}
+
+bool RewriteModernObjC::needToScanForQualifiers(QualType T) {
+ if (T->isObjCQualifiedIdType())
+ return true;
+ if (const PointerType *PT = T->getAs<PointerType>()) {
+ if (PT->getPointeeType()->isObjCQualifiedIdType())
+ return true;
+ }
+ if (T->isObjCObjectPointerType()) {
+ T = T->getPointeeType();
+ return T->isObjCQualifiedInterfaceType();
+ }
+ if (T->isArrayType()) {
+ QualType ElemTy = Context->getBaseElementType(T);
+ return needToScanForQualifiers(ElemTy);
+ }
+ return false;
+}
+
+void RewriteModernObjC::RewriteObjCQualifiedInterfaceTypes(Expr *E) {
+ QualType Type = E->getType();
+ if (needToScanForQualifiers(Type)) {
+ SourceLocation Loc, EndLoc;
+
+ if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E)) {
+ Loc = ECE->getLParenLoc();
+ EndLoc = ECE->getRParenLoc();
+ } else {
+ Loc = E->getLocStart();
+ EndLoc = E->getLocEnd();
+ }
+ // This will defend against trying to rewrite synthesized expressions.
+ if (Loc.isInvalid() || EndLoc.isInvalid())
+ return;
+
+ const char *startBuf = SM->getCharacterData(Loc);
+ const char *endBuf = SM->getCharacterData(EndLoc);
+ const char *startRef = nullptr, *endRef = nullptr;
+ if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
+ // Get the locations of the startRef, endRef.
+ SourceLocation LessLoc = Loc.getLocWithOffset(startRef-startBuf);
+ SourceLocation GreaterLoc = Loc.getLocWithOffset(endRef-startBuf+1);
+ // Comment out the protocol references.
+ InsertText(LessLoc, "/*");
+ InsertText(GreaterLoc, "*/");
+ }
+ }
+}
+
+void RewriteModernObjC::RewriteObjCQualifiedInterfaceTypes(Decl *Dcl) {
+ SourceLocation Loc;
+ QualType Type;
+ const FunctionProtoType *proto = nullptr;
+ if (VarDecl *VD = dyn_cast<VarDecl>(Dcl)) {
+ Loc = VD->getLocation();
+ Type = VD->getType();
+ }
+ else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(Dcl)) {
+ Loc = FD->getLocation();
+ // Check for ObjC 'id' and class types that have been adorned with protocol
+ // information (id<p>, C<p>*). The protocol references need to be rewritten!
+ const FunctionType *funcType = FD->getType()->getAs<FunctionType>();
+ assert(funcType && "missing function type");
+ proto = dyn_cast<FunctionProtoType>(funcType);
+ if (!proto)
+ return;
+ Type = proto->getReturnType();
+ }
+ else if (FieldDecl *FD = dyn_cast<FieldDecl>(Dcl)) {
+ Loc = FD->getLocation();
+ Type = FD->getType();
+ }
+ else if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(Dcl)) {
+ Loc = TD->getLocation();
+ Type = TD->getUnderlyingType();
+ }
+ else
+ return;
+
+ if (needToScanForQualifiers(Type)) {
+ // Since types are unique, we need to scan the buffer.
+
+ const char *endBuf = SM->getCharacterData(Loc);
+ const char *startBuf = endBuf;
+ while (*startBuf != ';' && *startBuf != '<' && startBuf != MainFileStart)
+ startBuf--; // scan backward (from the decl location) for return type.
+ const char *startRef = nullptr, *endRef = nullptr;
+ if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
+ // Get the locations of the startRef, endRef.
+ SourceLocation LessLoc = Loc.getLocWithOffset(startRef-endBuf);
+ SourceLocation GreaterLoc = Loc.getLocWithOffset(endRef-endBuf+1);
+ // Comment out the protocol references.
+ InsertText(LessLoc, "/*");
+ InsertText(GreaterLoc, "*/");
+ }
+ }
+ if (!proto)
+ return; // most likely, was a variable
+ // Now check arguments.
+ const char *startBuf = SM->getCharacterData(Loc);
+ const char *startFuncBuf = startBuf;
+ for (unsigned i = 0; i < proto->getNumParams(); i++) {
+ if (needToScanForQualifiers(proto->getParamType(i))) {
+ // Since types are unique, we need to scan the buffer.
+
+ const char *endBuf = startBuf;
+ // scan forward (from the decl location) for argument types.
+ scanToNextArgument(endBuf);
+ const char *startRef = nullptr, *endRef = nullptr;
+ if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
+ // Get the locations of the startRef, endRef.
+ SourceLocation LessLoc =
+ Loc.getLocWithOffset(startRef-startFuncBuf);
+ SourceLocation GreaterLoc =
+ Loc.getLocWithOffset(endRef-startFuncBuf+1);
+ // Comment out the protocol references.
+ InsertText(LessLoc, "/*");
+ InsertText(GreaterLoc, "*/");
+ }
+ startBuf = ++endBuf;
+ }
+ else {
+ // If the function name is derived from a macro expansion, then the
+ // argument buffer will not follow the name. Need to speak with Chris.
+ while (*startBuf && *startBuf != ')' && *startBuf != ',')
+ startBuf++; // scan forward (from the decl location) for argument types.
+ startBuf++;
+ }
+ }
+}
+
+void RewriteModernObjC::RewriteTypeOfDecl(VarDecl *ND) {
+ QualType QT = ND->getType();
+ const Type* TypePtr = QT->getAs<Type>();
+ if (!isa<TypeOfExprType>(TypePtr))
+ return;
+ while (isa<TypeOfExprType>(TypePtr)) {
+ const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr);
+ QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType();
+ TypePtr = QT->getAs<Type>();
+ }
+ // FIXME. This will not work for multiple declarators; as in:
+ // __typeof__(a) b,c,d;
+ std::string TypeAsString(QT.getAsString(Context->getPrintingPolicy()));
+ SourceLocation DeclLoc = ND->getTypeSpecStartLoc();
+ const char *startBuf = SM->getCharacterData(DeclLoc);
+ if (ND->getInit()) {
+ std::string Name(ND->getNameAsString());
+ TypeAsString += " " + Name + " = ";
+ Expr *E = ND->getInit();
+ SourceLocation startLoc;
+ if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E))
+ startLoc = ECE->getLParenLoc();
+ else
+ startLoc = E->getLocStart();
+ startLoc = SM->getExpansionLoc(startLoc);
+ const char *endBuf = SM->getCharacterData(startLoc);
+ ReplaceText(DeclLoc, endBuf-startBuf-1, TypeAsString);
+ }
+ else {
+ SourceLocation X = ND->getLocEnd();
+ X = SM->getExpansionLoc(X);
+ const char *endBuf = SM->getCharacterData(X);
+ ReplaceText(DeclLoc, endBuf-startBuf-1, TypeAsString);
+ }
+}
+
+// SynthSelGetUidFunctionDecl - SEL sel_registerName(const char *str);
+void RewriteModernObjC::SynthSelGetUidFunctionDecl() {
+ IdentifierInfo *SelGetUidIdent = &Context->Idents.get("sel_registerName");
+ SmallVector<QualType, 16> ArgTys;
+ ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
+ QualType getFuncType =
+ getSimpleFunctionType(Context->getObjCSelType(), ArgTys);
+ SelGetUidFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ SelGetUidIdent, getFuncType,
+ nullptr, SC_Extern);
+}
+
+void RewriteModernObjC::RewriteFunctionDecl(FunctionDecl *FD) {
+ // declared in <objc/objc.h>
+ if (FD->getIdentifier() &&
+ FD->getName() == "sel_registerName") {
+ SelGetUidFunctionDecl = FD;
+ return;
+ }
+ RewriteObjCQualifiedInterfaceTypes(FD);
+}
+
+void RewriteModernObjC::RewriteBlockPointerType(std::string& Str, QualType Type) {
+ std::string TypeString(Type.getAsString(Context->getPrintingPolicy()));
+ const char *argPtr = TypeString.c_str();
+ if (!strchr(argPtr, '^')) {
+ Str += TypeString;
+ return;
+ }
+ while (*argPtr) {
+ Str += (*argPtr == '^' ? '*' : *argPtr);
+ argPtr++;
+ }
+}
+
+// FIXME. Consolidate this routine with RewriteBlockPointerType.
+void RewriteModernObjC::RewriteBlockPointerTypeVariable(std::string& Str,
+ ValueDecl *VD) {
+ QualType Type = VD->getType();
+ std::string TypeString(Type.getAsString(Context->getPrintingPolicy()));
+ const char *argPtr = TypeString.c_str();
+ int paren = 0;
+ while (*argPtr) {
+ switch (*argPtr) {
+ case '(':
+ Str += *argPtr;
+ paren++;
+ break;
+ case ')':
+ Str += *argPtr;
+ paren--;
+ break;
+ case '^':
+ Str += '*';
+ if (paren == 1)
+ Str += VD->getNameAsString();
+ break;
+ default:
+ Str += *argPtr;
+ break;
+ }
+ argPtr++;
+ }
+}
+
+void RewriteModernObjC::RewriteBlockLiteralFunctionDecl(FunctionDecl *FD) {
+ SourceLocation FunLocStart = FD->getTypeSpecStartLoc();
+ const FunctionType *funcType = FD->getType()->getAs<FunctionType>();
+ const FunctionProtoType *proto = dyn_cast<FunctionProtoType>(funcType);
+ if (!proto)
+ return;
+ QualType Type = proto->getReturnType();
+ std::string FdStr = Type.getAsString(Context->getPrintingPolicy());
+ FdStr += " ";
+ FdStr += FD->getName();
+ FdStr += "(";
+ unsigned numArgs = proto->getNumParams();
+ for (unsigned i = 0; i < numArgs; i++) {
+ QualType ArgType = proto->getParamType(i);
+ RewriteBlockPointerType(FdStr, ArgType);
+ if (i+1 < numArgs)
+ FdStr += ", ";
+ }
+ if (FD->isVariadic()) {
+ FdStr += (numArgs > 0) ? ", ...);\n" : "...);\n";
+ }
+ else
+ FdStr += ");\n";
+ InsertText(FunLocStart, FdStr);
+}
+
+// SynthSuperConstructorFunctionDecl - id __rw_objc_super(id obj, id super);
+void RewriteModernObjC::SynthSuperConstructorFunctionDecl() {
+ if (SuperConstructorFunctionDecl)
+ return;
+ IdentifierInfo *msgSendIdent = &Context->Idents.get("__rw_objc_super");
+ SmallVector<QualType, 16> ArgTys;
+ QualType argT = Context->getObjCIdType();
+ assert(!argT.isNull() && "Can't find 'id' type");
+ ArgTys.push_back(argT);
+ ArgTys.push_back(argT);
+ QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
+ ArgTys);
+ SuperConstructorFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ msgSendIdent, msgSendType,
+ nullptr, SC_Extern);
+}
+
+// SynthMsgSendFunctionDecl - id objc_msgSend(id self, SEL op, ...);
+void RewriteModernObjC::SynthMsgSendFunctionDecl() {
+ IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend");
+ SmallVector<QualType, 16> ArgTys;
+ QualType argT = Context->getObjCIdType();
+ assert(!argT.isNull() && "Can't find 'id' type");
+ ArgTys.push_back(argT);
+ argT = Context->getObjCSelType();
+ assert(!argT.isNull() && "Can't find 'SEL' type");
+ ArgTys.push_back(argT);
+ QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
+ ArgTys, /*isVariadic=*/true);
+ MsgSendFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ msgSendIdent, msgSendType, nullptr,
+ SC_Extern);
+}
+
+// SynthMsgSendSuperFunctionDecl - id objc_msgSendSuper(void);
+void RewriteModernObjC::SynthMsgSendSuperFunctionDecl() {
+ IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSendSuper");
+ SmallVector<QualType, 2> ArgTys;
+ ArgTys.push_back(Context->VoidTy);
+ QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
+ ArgTys, /*isVariadic=*/true);
+ MsgSendSuperFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ msgSendIdent, msgSendType,
+ nullptr, SC_Extern);
+}
+
+// SynthMsgSendStretFunctionDecl - id objc_msgSend_stret(id self, SEL op, ...);
+void RewriteModernObjC::SynthMsgSendStretFunctionDecl() {
+ IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_stret");
+ SmallVector<QualType, 16> ArgTys;
+ QualType argT = Context->getObjCIdType();
+ assert(!argT.isNull() && "Can't find 'id' type");
+ ArgTys.push_back(argT);
+ argT = Context->getObjCSelType();
+ assert(!argT.isNull() && "Can't find 'SEL' type");
+ ArgTys.push_back(argT);
+ QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
+ ArgTys, /*isVariadic=*/true);
+ MsgSendStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ msgSendIdent, msgSendType,
+ nullptr, SC_Extern);
+}
+
+// SynthMsgSendSuperStretFunctionDecl -
+// id objc_msgSendSuper_stret(void);
+void RewriteModernObjC::SynthMsgSendSuperStretFunctionDecl() {
+ IdentifierInfo *msgSendIdent =
+ &Context->Idents.get("objc_msgSendSuper_stret");
+ SmallVector<QualType, 2> ArgTys;
+ ArgTys.push_back(Context->VoidTy);
+ QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
+ ArgTys, /*isVariadic=*/true);
+ MsgSendSuperStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ msgSendIdent,
+ msgSendType, nullptr,
+ SC_Extern);
+}
+
+// SynthMsgSendFpretFunctionDecl - double objc_msgSend_fpret(id self, SEL op, ...);
+void RewriteModernObjC::SynthMsgSendFpretFunctionDecl() {
+ IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_fpret");
+ SmallVector<QualType, 16> ArgTys;
+ QualType argT = Context->getObjCIdType();
+ assert(!argT.isNull() && "Can't find 'id' type");
+ ArgTys.push_back(argT);
+ argT = Context->getObjCSelType();
+ assert(!argT.isNull() && "Can't find 'SEL' type");
+ ArgTys.push_back(argT);
+ QualType msgSendType = getSimpleFunctionType(Context->DoubleTy,
+ ArgTys, /*isVariadic=*/true);
+ MsgSendFpretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ msgSendIdent, msgSendType,
+ nullptr, SC_Extern);
+}
+
+// SynthGetClassFunctionDecl - Class objc_getClass(const char *name);
+void RewriteModernObjC::SynthGetClassFunctionDecl() {
+ IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getClass");
+ SmallVector<QualType, 16> ArgTys;
+ ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
+ QualType getClassType = getSimpleFunctionType(Context->getObjCClassType(),
+ ArgTys);
+ GetClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ getClassIdent, getClassType,
+ nullptr, SC_Extern);
+}
+
+// SynthGetSuperClassFunctionDecl - Class class_getSuperclass(Class cls);
+void RewriteModernObjC::SynthGetSuperClassFunctionDecl() {
+ IdentifierInfo *getSuperClassIdent =
+ &Context->Idents.get("class_getSuperclass");
+ SmallVector<QualType, 16> ArgTys;
+ ArgTys.push_back(Context->getObjCClassType());
+ QualType getClassType = getSimpleFunctionType(Context->getObjCClassType(),
+ ArgTys);
+ GetSuperClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ getSuperClassIdent,
+ getClassType, nullptr,
+ SC_Extern);
+}
+
+// SynthGetMetaClassFunctionDecl - Class objc_getMetaClass(const char *name);
+void RewriteModernObjC::SynthGetMetaClassFunctionDecl() {
+ IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getMetaClass");
+ SmallVector<QualType, 16> ArgTys;
+ ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
+ QualType getClassType = getSimpleFunctionType(Context->getObjCClassType(),
+ ArgTys);
+ GetMetaClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ getClassIdent, getClassType,
+ nullptr, SC_Extern);
+}
+
+Stmt *RewriteModernObjC::RewriteObjCStringLiteral(ObjCStringLiteral *Exp) {
+ assert (Exp != nullptr && "Expected non-null ObjCStringLiteral");
+ QualType strType = getConstantStringStructType();
+
+ std::string S = "__NSConstantStringImpl_";
+
+ std::string tmpName = InFileName;
+ unsigned i;
+ for (i=0; i < tmpName.length(); i++) {
+ char c = tmpName.at(i);
+ // replace any non-alphanumeric characters with '_'.
+ if (!isAlphanumeric(c))
+ tmpName[i] = '_';
+ }
+ S += tmpName;
+ S += "_";
+ S += utostr(NumObjCStringLiterals++);
+
+ Preamble += "static __NSConstantStringImpl " + S;
+ Preamble += " __attribute__ ((section (\"__DATA, __cfstring\"))) = {__CFConstantStringClassReference,";
+ Preamble += "0x000007c8,"; // utf8_str
+ // The pretty printer for StringLiteral handles escape characters properly.
+ std::string prettyBufS;
+ llvm::raw_string_ostream prettyBuf(prettyBufS);
+ Exp->getString()->printPretty(prettyBuf, nullptr, PrintingPolicy(LangOpts));
+ Preamble += prettyBuf.str();
+ Preamble += ",";
+ Preamble += utostr(Exp->getString()->getByteLength()) + "};\n";
+
+ VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
+ SourceLocation(), &Context->Idents.get(S),
+ strType, nullptr, SC_Static);
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(NewVD, false, strType, VK_LValue,
+ SourceLocation());
+ Expr *Unop = new (Context) UnaryOperator(DRE, UO_AddrOf,
+ Context->getPointerType(DRE->getType()),
+ VK_RValue, OK_Ordinary,
+ SourceLocation());
+ // cast to NSConstantString *
+ CastExpr *cast = NoTypeInfoCStyleCastExpr(Context, Exp->getType(),
+ CK_CPointerToObjCPointerCast, Unop);
+ ReplaceStmt(Exp, cast);
+ // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
+ return cast;
+}
+
+Stmt *RewriteModernObjC::RewriteObjCBoolLiteralExpr(ObjCBoolLiteralExpr *Exp) {
+ unsigned IntSize =
+ static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
+
+ Expr *FlagExp = IntegerLiteral::Create(*Context,
+ llvm::APInt(IntSize, Exp->getValue()),
+ Context->IntTy, Exp->getLocation());
+ CastExpr *cast = NoTypeInfoCStyleCastExpr(Context, Context->ObjCBuiltinBoolTy,
+ CK_BitCast, FlagExp);
+ ParenExpr *PE = new (Context) ParenExpr(Exp->getLocation(), Exp->getExprLoc(),
+ cast);
+ ReplaceStmt(Exp, PE);
+ return PE;
+}
+
+Stmt *RewriteModernObjC::RewriteObjCBoxedExpr(ObjCBoxedExpr *Exp) {
+ // synthesize declaration of helper functions needed in this routine.
+ if (!SelGetUidFunctionDecl)
+ SynthSelGetUidFunctionDecl();
+ // use objc_msgSend() for all.
+ if (!MsgSendFunctionDecl)
+ SynthMsgSendFunctionDecl();
+ if (!GetClassFunctionDecl)
+ SynthGetClassFunctionDecl();
+
+ FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
+ SourceLocation StartLoc = Exp->getLocStart();
+ SourceLocation EndLoc = Exp->getLocEnd();
+
+ // Synthesize a call to objc_msgSend().
+ SmallVector<Expr*, 4> MsgExprs;
+ SmallVector<Expr*, 4> ClsExprs;
+
+ // Create a call to objc_getClass("<BoxingClass>"). It will be the 1st argument.
+ ObjCMethodDecl *BoxingMethod = Exp->getBoxingMethod();
+ ObjCInterfaceDecl *BoxingClass = BoxingMethod->getClassInterface();
+
+ IdentifierInfo *clsName = BoxingClass->getIdentifier();
+ ClsExprs.push_back(getStringLiteral(clsName->getName()));
+ CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
+ &ClsExprs[0],
+ ClsExprs.size(),
+ StartLoc, EndLoc);
+ MsgExprs.push_back(Cls);
+
+ // Create a call to sel_registerName("<BoxingMethod>:"), etc.
+ // it will be the 2nd argument.
+ SmallVector<Expr*, 4> SelExprs;
+ SelExprs.push_back(
+ getStringLiteral(BoxingMethod->getSelector().getAsString()));
+ CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
+ &SelExprs[0], SelExprs.size(),
+ StartLoc, EndLoc);
+ MsgExprs.push_back(SelExp);
+
+ // User provided sub-expression is the 3rd, and last, argument.
+ Expr *subExpr = Exp->getSubExpr();
+ if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(subExpr)) {
+ QualType type = ICE->getType();
+ const Expr *SubExpr = ICE->IgnoreParenImpCasts();
+ CastKind CK = CK_BitCast;
+ if (SubExpr->getType()->isIntegralType(*Context) && type->isBooleanType())
+ CK = CK_IntegralToBoolean;
+ subExpr = NoTypeInfoCStyleCastExpr(Context, type, CK, subExpr);
+ }
+ MsgExprs.push_back(subExpr);
+
+ SmallVector<QualType, 4> ArgTypes;
+ ArgTypes.push_back(Context->getObjCIdType());
+ ArgTypes.push_back(Context->getObjCSelType());
+ for (const auto PI : BoxingMethod->parameters())
+ ArgTypes.push_back(PI->getType());
+
+ QualType returnType = Exp->getType();
+ // Get the type, we will need to reference it in a couple spots.
+ QualType msgSendType = MsgSendFlavor->getType();
+
+ // Create a reference to the objc_msgSend() declaration.
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(MsgSendFlavor, false, msgSendType,
+ VK_LValue, SourceLocation());
+
+ CastExpr *cast = NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(Context->VoidTy),
+ CK_BitCast, DRE);
+
+ // Now do the "normal" pointer to function cast.
+ QualType castType =
+ getSimpleFunctionType(returnType, ArgTypes, BoxingMethod->isVariadic());
+ castType = Context->getPointerType(castType);
+ cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
+ cast);
+
+ // Don't forget the parens to enforce the proper binding.
+ ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);
+
+ const FunctionType *FT = msgSendType->getAs<FunctionType>();
+ CallExpr *CE = new (Context)
+ CallExpr(*Context, PE, MsgExprs, FT->getReturnType(), VK_RValue, EndLoc);
+ ReplaceStmt(Exp, CE);
+ return CE;
+}
+
+Stmt *RewriteModernObjC::RewriteObjCArrayLiteralExpr(ObjCArrayLiteral *Exp) {
+ // synthesize declaration of helper functions needed in this routine.
+ if (!SelGetUidFunctionDecl)
+ SynthSelGetUidFunctionDecl();
+ // use objc_msgSend() for all.
+ if (!MsgSendFunctionDecl)
+ SynthMsgSendFunctionDecl();
+ if (!GetClassFunctionDecl)
+ SynthGetClassFunctionDecl();
+
+ FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
+ SourceLocation StartLoc = Exp->getLocStart();
+ SourceLocation EndLoc = Exp->getLocEnd();
+
+ // Build the expression: __NSContainer_literal(int, ...).arr
+ QualType IntQT = Context->IntTy;
+ QualType NSArrayFType =
+ getSimpleFunctionType(Context->VoidTy, IntQT, true);
+ std::string NSArrayFName("__NSContainer_literal");
+ FunctionDecl *NSArrayFD = SynthBlockInitFunctionDecl(NSArrayFName);
+ DeclRefExpr *NSArrayDRE =
+ new (Context) DeclRefExpr(NSArrayFD, false, NSArrayFType, VK_RValue,
+ SourceLocation());
+
+ SmallVector<Expr*, 16> InitExprs;
+ unsigned NumElements = Exp->getNumElements();
+ unsigned UnsignedIntSize =
+ static_cast<unsigned>(Context->getTypeSize(Context->UnsignedIntTy));
+ Expr *count = IntegerLiteral::Create(*Context,
+ llvm::APInt(UnsignedIntSize, NumElements),
+ Context->UnsignedIntTy, SourceLocation());
+ InitExprs.push_back(count);
+ for (unsigned i = 0; i < NumElements; i++)
+ InitExprs.push_back(Exp->getElement(i));
+ Expr *NSArrayCallExpr =
+ new (Context) CallExpr(*Context, NSArrayDRE, InitExprs,
+ NSArrayFType, VK_LValue, SourceLocation());
+
+ FieldDecl *ARRFD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
+ SourceLocation(),
+ &Context->Idents.get("arr"),
+ Context->getPointerType(Context->VoidPtrTy),
+ nullptr, /*BitWidth=*/nullptr,
+ /*Mutable=*/true, ICIS_NoInit);
+ MemberExpr *ArrayLiteralME =
+ new (Context) MemberExpr(NSArrayCallExpr, false, ARRFD,
+ SourceLocation(),
+ ARRFD->getType(), VK_LValue,
+ OK_Ordinary);
+ QualType ConstIdT = Context->getObjCIdType().withConst();
+ CStyleCastExpr * ArrayLiteralObjects =
+ NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(ConstIdT),
+ CK_BitCast,
+ ArrayLiteralME);
+
+ // Synthesize a call to objc_msgSend().
+ SmallVector<Expr*, 32> MsgExprs;
+ SmallVector<Expr*, 4> ClsExprs;
+ QualType expType = Exp->getType();
+
+ // Create a call to objc_getClass("NSArray"). It will be th 1st argument.
+ ObjCInterfaceDecl *Class =
+ expType->getPointeeType()->getAs<ObjCObjectType>()->getInterface();
+
+ IdentifierInfo *clsName = Class->getIdentifier();
+ ClsExprs.push_back(getStringLiteral(clsName->getName()));
+ CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
+ &ClsExprs[0],
+ ClsExprs.size(),
+ StartLoc, EndLoc);
+ MsgExprs.push_back(Cls);
+
+ // Create a call to sel_registerName("arrayWithObjects:count:").
+ // it will be the 2nd argument.
+ SmallVector<Expr*, 4> SelExprs;
+ ObjCMethodDecl *ArrayMethod = Exp->getArrayWithObjectsMethod();
+ SelExprs.push_back(
+ getStringLiteral(ArrayMethod->getSelector().getAsString()));
+ CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
+ &SelExprs[0], SelExprs.size(),
+ StartLoc, EndLoc);
+ MsgExprs.push_back(SelExp);
+
+ // (const id [])objects
+ MsgExprs.push_back(ArrayLiteralObjects);
+
+ // (NSUInteger)cnt
+ Expr *cnt = IntegerLiteral::Create(*Context,
+ llvm::APInt(UnsignedIntSize, NumElements),
+ Context->UnsignedIntTy, SourceLocation());
+ MsgExprs.push_back(cnt);
+
+
+ SmallVector<QualType, 4> ArgTypes;
+ ArgTypes.push_back(Context->getObjCIdType());
+ ArgTypes.push_back(Context->getObjCSelType());
+ for (const auto *PI : ArrayMethod->params())
+ ArgTypes.push_back(PI->getType());
+
+ QualType returnType = Exp->getType();
+ // Get the type, we will need to reference it in a couple spots.
+ QualType msgSendType = MsgSendFlavor->getType();
+
+ // Create a reference to the objc_msgSend() declaration.
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(MsgSendFlavor, false, msgSendType,
+ VK_LValue, SourceLocation());
+
+ CastExpr *cast = NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(Context->VoidTy),
+ CK_BitCast, DRE);
+
+ // Now do the "normal" pointer to function cast.
+ QualType castType =
+ getSimpleFunctionType(returnType, ArgTypes, ArrayMethod->isVariadic());
+ castType = Context->getPointerType(castType);
+ cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
+ cast);
+
+ // Don't forget the parens to enforce the proper binding.
+ ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);
+
+ const FunctionType *FT = msgSendType->getAs<FunctionType>();
+ CallExpr *CE = new (Context)
+ CallExpr(*Context, PE, MsgExprs, FT->getReturnType(), VK_RValue, EndLoc);
+ ReplaceStmt(Exp, CE);
+ return CE;
+}
+
+Stmt *RewriteModernObjC::RewriteObjCDictionaryLiteralExpr(ObjCDictionaryLiteral *Exp) {
+ // synthesize declaration of helper functions needed in this routine.
+ if (!SelGetUidFunctionDecl)
+ SynthSelGetUidFunctionDecl();
+ // use objc_msgSend() for all.
+ if (!MsgSendFunctionDecl)
+ SynthMsgSendFunctionDecl();
+ if (!GetClassFunctionDecl)
+ SynthGetClassFunctionDecl();
+
+ FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
+ SourceLocation StartLoc = Exp->getLocStart();
+ SourceLocation EndLoc = Exp->getLocEnd();
+
+ // Build the expression: __NSContainer_literal(int, ...).arr
+ QualType IntQT = Context->IntTy;
+ QualType NSDictFType =
+ getSimpleFunctionType(Context->VoidTy, IntQT, true);
+ std::string NSDictFName("__NSContainer_literal");
+ FunctionDecl *NSDictFD = SynthBlockInitFunctionDecl(NSDictFName);
+ DeclRefExpr *NSDictDRE =
+ new (Context) DeclRefExpr(NSDictFD, false, NSDictFType, VK_RValue,
+ SourceLocation());
+
+ SmallVector<Expr*, 16> KeyExprs;
+ SmallVector<Expr*, 16> ValueExprs;
+
+ unsigned NumElements = Exp->getNumElements();
+ unsigned UnsignedIntSize =
+ static_cast<unsigned>(Context->getTypeSize(Context->UnsignedIntTy));
+ Expr *count = IntegerLiteral::Create(*Context,
+ llvm::APInt(UnsignedIntSize, NumElements),
+ Context->UnsignedIntTy, SourceLocation());
+ KeyExprs.push_back(count);
+ ValueExprs.push_back(count);
+ for (unsigned i = 0; i < NumElements; i++) {
+ ObjCDictionaryElement Element = Exp->getKeyValueElement(i);
+ KeyExprs.push_back(Element.Key);
+ ValueExprs.push_back(Element.Value);
+ }
+
+ // (const id [])objects
+ Expr *NSValueCallExpr =
+ new (Context) CallExpr(*Context, NSDictDRE, ValueExprs,
+ NSDictFType, VK_LValue, SourceLocation());
+
+ FieldDecl *ARRFD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
+ SourceLocation(),
+ &Context->Idents.get("arr"),
+ Context->getPointerType(Context->VoidPtrTy),
+ nullptr, /*BitWidth=*/nullptr,
+ /*Mutable=*/true, ICIS_NoInit);
+ MemberExpr *DictLiteralValueME =
+ new (Context) MemberExpr(NSValueCallExpr, false, ARRFD,
+ SourceLocation(),
+ ARRFD->getType(), VK_LValue,
+ OK_Ordinary);
+ QualType ConstIdT = Context->getObjCIdType().withConst();
+ CStyleCastExpr * DictValueObjects =
+ NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(ConstIdT),
+ CK_BitCast,
+ DictLiteralValueME);
+ // (const id <NSCopying> [])keys
+ Expr *NSKeyCallExpr =
+ new (Context) CallExpr(*Context, NSDictDRE, KeyExprs,
+ NSDictFType, VK_LValue, SourceLocation());
+
+ MemberExpr *DictLiteralKeyME =
+ new (Context) MemberExpr(NSKeyCallExpr, false, ARRFD,
+ SourceLocation(),
+ ARRFD->getType(), VK_LValue,
+ OK_Ordinary);
+
+ CStyleCastExpr * DictKeyObjects =
+ NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(ConstIdT),
+ CK_BitCast,
+ DictLiteralKeyME);
+
+
+
+ // Synthesize a call to objc_msgSend().
+ SmallVector<Expr*, 32> MsgExprs;
+ SmallVector<Expr*, 4> ClsExprs;
+ QualType expType = Exp->getType();
+
+ // Create a call to objc_getClass("NSArray"). It will be th 1st argument.
+ ObjCInterfaceDecl *Class =
+ expType->getPointeeType()->getAs<ObjCObjectType>()->getInterface();
+
+ IdentifierInfo *clsName = Class->getIdentifier();
+ ClsExprs.push_back(getStringLiteral(clsName->getName()));
+ CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
+ &ClsExprs[0],
+ ClsExprs.size(),
+ StartLoc, EndLoc);
+ MsgExprs.push_back(Cls);
+
+ // Create a call to sel_registerName("arrayWithObjects:count:").
+ // it will be the 2nd argument.
+ SmallVector<Expr*, 4> SelExprs;
+ ObjCMethodDecl *DictMethod = Exp->getDictWithObjectsMethod();
+ SelExprs.push_back(getStringLiteral(DictMethod->getSelector().getAsString()));
+ CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
+ &SelExprs[0], SelExprs.size(),
+ StartLoc, EndLoc);
+ MsgExprs.push_back(SelExp);
+
+ // (const id [])objects
+ MsgExprs.push_back(DictValueObjects);
+
+ // (const id <NSCopying> [])keys
+ MsgExprs.push_back(DictKeyObjects);
+
+ // (NSUInteger)cnt
+ Expr *cnt = IntegerLiteral::Create(*Context,
+ llvm::APInt(UnsignedIntSize, NumElements),
+ Context->UnsignedIntTy, SourceLocation());
+ MsgExprs.push_back(cnt);
+
+
+ SmallVector<QualType, 8> ArgTypes;
+ ArgTypes.push_back(Context->getObjCIdType());
+ ArgTypes.push_back(Context->getObjCSelType());
+ for (const auto *PI : DictMethod->params()) {
+ QualType T = PI->getType();
+ if (const PointerType* PT = T->getAs<PointerType>()) {
+ QualType PointeeTy = PT->getPointeeType();
+ convertToUnqualifiedObjCType(PointeeTy);
+ T = Context->getPointerType(PointeeTy);
+ }
+ ArgTypes.push_back(T);
+ }
+
+ QualType returnType = Exp->getType();
+ // Get the type, we will need to reference it in a couple spots.
+ QualType msgSendType = MsgSendFlavor->getType();
+
+ // Create a reference to the objc_msgSend() declaration.
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(MsgSendFlavor, false, msgSendType,
+ VK_LValue, SourceLocation());
+
+ CastExpr *cast = NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(Context->VoidTy),
+ CK_BitCast, DRE);
+
+ // Now do the "normal" pointer to function cast.
+ QualType castType =
+ getSimpleFunctionType(returnType, ArgTypes, DictMethod->isVariadic());
+ castType = Context->getPointerType(castType);
+ cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
+ cast);
+
+ // Don't forget the parens to enforce the proper binding.
+ ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);
+
+ const FunctionType *FT = msgSendType->getAs<FunctionType>();
+ CallExpr *CE = new (Context)
+ CallExpr(*Context, PE, MsgExprs, FT->getReturnType(), VK_RValue, EndLoc);
+ ReplaceStmt(Exp, CE);
+ return CE;
+}
+
+// struct __rw_objc_super {
+// struct objc_object *object; struct objc_object *superClass;
+// };
+QualType RewriteModernObjC::getSuperStructType() {
+ if (!SuperStructDecl) {
+ SuperStructDecl = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get("__rw_objc_super"));
+ QualType FieldTypes[2];
+
+ // struct objc_object *object;
+ FieldTypes[0] = Context->getObjCIdType();
+ // struct objc_object *superClass;
+ FieldTypes[1] = Context->getObjCIdType();
+
+ // Create fields
+ for (unsigned i = 0; i < 2; ++i) {
+ SuperStructDecl->addDecl(FieldDecl::Create(*Context, SuperStructDecl,
+ SourceLocation(),
+ SourceLocation(), nullptr,
+ FieldTypes[i], nullptr,
+ /*BitWidth=*/nullptr,
+ /*Mutable=*/false,
+ ICIS_NoInit));
+ }
+
+ SuperStructDecl->completeDefinition();
+ }
+ return Context->getTagDeclType(SuperStructDecl);
+}
+
+QualType RewriteModernObjC::getConstantStringStructType() {
+ if (!ConstantStringDecl) {
+ ConstantStringDecl = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get("__NSConstantStringImpl"));
+ QualType FieldTypes[4];
+
+ // struct objc_object *receiver;
+ FieldTypes[0] = Context->getObjCIdType();
+ // int flags;
+ FieldTypes[1] = Context->IntTy;
+ // char *str;
+ FieldTypes[2] = Context->getPointerType(Context->CharTy);
+ // long length;
+ FieldTypes[3] = Context->LongTy;
+
+ // Create fields
+ for (unsigned i = 0; i < 4; ++i) {
+ ConstantStringDecl->addDecl(FieldDecl::Create(*Context,
+ ConstantStringDecl,
+ SourceLocation(),
+ SourceLocation(), nullptr,
+ FieldTypes[i], nullptr,
+ /*BitWidth=*/nullptr,
+ /*Mutable=*/true,
+ ICIS_NoInit));
+ }
+
+ ConstantStringDecl->completeDefinition();
+ }
+ return Context->getTagDeclType(ConstantStringDecl);
+}
+
+/// getFunctionSourceLocation - returns start location of a function
+/// definition. Complication arises when function has declared as
+/// extern "C" or extern "C" {...}
+static SourceLocation getFunctionSourceLocation (RewriteModernObjC &R,
+ FunctionDecl *FD) {
+ if (FD->isExternC() && !FD->isMain()) {
+ const DeclContext *DC = FD->getDeclContext();
+ if (const LinkageSpecDecl *LSD = dyn_cast<LinkageSpecDecl>(DC))
+ // if it is extern "C" {...}, return function decl's own location.
+ if (!LSD->getRBraceLoc().isValid())
+ return LSD->getExternLoc();
+ }
+ if (FD->getStorageClass() != SC_None)
+ R.RewriteBlockLiteralFunctionDecl(FD);
+ return FD->getTypeSpecStartLoc();
+}
+
+void RewriteModernObjC::RewriteLineDirective(const Decl *D) {
+
+ SourceLocation Location = D->getLocation();
+
+ if (Location.isFileID() && GenerateLineInfo) {
+ std::string LineString("\n#line ");
+ PresumedLoc PLoc = SM->getPresumedLoc(Location);
+ LineString += utostr(PLoc.getLine());
+ LineString += " \"";
+ LineString += Lexer::Stringify(PLoc.getFilename());
+ if (isa<ObjCMethodDecl>(D))
+ LineString += "\"";
+ else LineString += "\"\n";
+
+ Location = D->getLocStart();
+ if (const FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
+ if (FD->isExternC() && !FD->isMain()) {
+ const DeclContext *DC = FD->getDeclContext();
+ if (const LinkageSpecDecl *LSD = dyn_cast<LinkageSpecDecl>(DC))
+ // if it is extern "C" {...}, return function decl's own location.
+ if (!LSD->getRBraceLoc().isValid())
+ Location = LSD->getExternLoc();
+ }
+ }
+ InsertText(Location, LineString);
+ }
+}
+
+/// SynthMsgSendStretCallExpr - This routine translates message expression
+/// into a call to objc_msgSend_stret() entry point. Tricky part is that
+/// nil check on receiver must be performed before calling objc_msgSend_stret.
+/// MsgSendStretFlavor - function declaration objc_msgSend_stret(...)
+/// msgSendType - function type of objc_msgSend_stret(...)
+/// returnType - Result type of the method being synthesized.
+/// ArgTypes - type of the arguments passed to objc_msgSend_stret, starting with receiver type.
+/// MsgExprs - list of argument expressions being passed to objc_msgSend_stret,
+/// starting with receiver.
+/// Method - Method being rewritten.
+Expr *RewriteModernObjC::SynthMsgSendStretCallExpr(FunctionDecl *MsgSendStretFlavor,
+ QualType returnType,
+ SmallVectorImpl<QualType> &ArgTypes,
+ SmallVectorImpl<Expr*> &MsgExprs,
+ ObjCMethodDecl *Method) {
+ // Now do the "normal" pointer to function cast.
+ QualType castType = getSimpleFunctionType(returnType, ArgTypes,
+ Method ? Method->isVariadic()
+ : false);
+ castType = Context->getPointerType(castType);
+
+ // build type for containing the objc_msgSend_stret object.
+ static unsigned stretCount=0;
+ std::string name = "__Stret"; name += utostr(stretCount);
+ std::string str =
+ "extern \"C\" void * __cdecl memset(void *_Dst, int _Val, size_t _Size);\n";
+ str += "namespace {\n";
+ str += "struct "; str += name;
+ str += " {\n\t";
+ str += name;
+ str += "(id receiver, SEL sel";
+ for (unsigned i = 2; i < ArgTypes.size(); i++) {
+ std::string ArgName = "arg"; ArgName += utostr(i);
+ ArgTypes[i].getAsStringInternal(ArgName, Context->getPrintingPolicy());
+ str += ", "; str += ArgName;
+ }
+ // could be vararg.
+ for (unsigned i = ArgTypes.size(); i < MsgExprs.size(); i++) {
+ std::string ArgName = "arg"; ArgName += utostr(i);
+ MsgExprs[i]->getType().getAsStringInternal(ArgName,
+ Context->getPrintingPolicy());
+ str += ", "; str += ArgName;
+ }
+
+ str += ") {\n";
+ str += "\t unsigned size = sizeof(";
+ str += returnType.getAsString(Context->getPrintingPolicy()); str += ");\n";
+
+ str += "\t if (size == 1 || size == 2 || size == 4 || size == 8)\n";
+
+ str += "\t s = (("; str += castType.getAsString(Context->getPrintingPolicy());
+ str += ")(void *)objc_msgSend)(receiver, sel";
+ for (unsigned i = 2; i < ArgTypes.size(); i++) {
+ str += ", arg"; str += utostr(i);
+ }
+ // could be vararg.
+ for (unsigned i = ArgTypes.size(); i < MsgExprs.size(); i++) {
+ str += ", arg"; str += utostr(i);
+ }
+ str+= ");\n";
+
+ str += "\t else if (receiver == 0)\n";
+ str += "\t memset((void*)&s, 0, sizeof(s));\n";
+ str += "\t else\n";
+
+
+ str += "\t s = (("; str += castType.getAsString(Context->getPrintingPolicy());
+ str += ")(void *)objc_msgSend_stret)(receiver, sel";
+ for (unsigned i = 2; i < ArgTypes.size(); i++) {
+ str += ", arg"; str += utostr(i);
+ }
+ // could be vararg.
+ for (unsigned i = ArgTypes.size(); i < MsgExprs.size(); i++) {
+ str += ", arg"; str += utostr(i);
+ }
+ str += ");\n";
+
+
+ str += "\t}\n";
+ str += "\t"; str += returnType.getAsString(Context->getPrintingPolicy());
+ str += " s;\n";
+ str += "};\n};\n\n";
+ SourceLocation FunLocStart;
+ if (CurFunctionDef)
+ FunLocStart = getFunctionSourceLocation(*this, CurFunctionDef);
+ else {
+ assert(CurMethodDef && "SynthMsgSendStretCallExpr - CurMethodDef is null");
+ FunLocStart = CurMethodDef->getLocStart();
+ }
+
+ InsertText(FunLocStart, str);
+ ++stretCount;
+
+ // AST for __Stretn(receiver, args).s;
+ IdentifierInfo *ID = &Context->Idents.get(name);
+ FunctionDecl *FD = FunctionDecl::Create(*Context, TUDecl, SourceLocation(),
+ SourceLocation(), ID, castType,
+ nullptr, SC_Extern, false, false);
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(FD, false, castType, VK_RValue,
+ SourceLocation());
+ CallExpr *STCE = new (Context) CallExpr(*Context, DRE, MsgExprs,
+ castType, VK_LValue, SourceLocation());
+
+ FieldDecl *FieldD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
+ SourceLocation(),
+ &Context->Idents.get("s"),
+ returnType, nullptr,
+ /*BitWidth=*/nullptr,
+ /*Mutable=*/true, ICIS_NoInit);
+ MemberExpr *ME = new (Context) MemberExpr(STCE, false, FieldD, SourceLocation(),
+ FieldD->getType(), VK_LValue,
+ OK_Ordinary);
+
+ return ME;
+}
+
+Stmt *RewriteModernObjC::SynthMessageExpr(ObjCMessageExpr *Exp,
+ SourceLocation StartLoc,
+ SourceLocation EndLoc) {
+ if (!SelGetUidFunctionDecl)
+ SynthSelGetUidFunctionDecl();
+ if (!MsgSendFunctionDecl)
+ SynthMsgSendFunctionDecl();
+ if (!MsgSendSuperFunctionDecl)
+ SynthMsgSendSuperFunctionDecl();
+ if (!MsgSendStretFunctionDecl)
+ SynthMsgSendStretFunctionDecl();
+ if (!MsgSendSuperStretFunctionDecl)
+ SynthMsgSendSuperStretFunctionDecl();
+ if (!MsgSendFpretFunctionDecl)
+ SynthMsgSendFpretFunctionDecl();
+ if (!GetClassFunctionDecl)
+ SynthGetClassFunctionDecl();
+ if (!GetSuperClassFunctionDecl)
+ SynthGetSuperClassFunctionDecl();
+ if (!GetMetaClassFunctionDecl)
+ SynthGetMetaClassFunctionDecl();
+
+ // default to objc_msgSend().
+ FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
+ // May need to use objc_msgSend_stret() as well.
+ FunctionDecl *MsgSendStretFlavor = nullptr;
+ if (ObjCMethodDecl *mDecl = Exp->getMethodDecl()) {
+ QualType resultType = mDecl->getReturnType();
+ if (resultType->isRecordType())
+ MsgSendStretFlavor = MsgSendStretFunctionDecl;
+ else if (resultType->isRealFloatingType())
+ MsgSendFlavor = MsgSendFpretFunctionDecl;
+ }
+
+ // Synthesize a call to objc_msgSend().
+ SmallVector<Expr*, 8> MsgExprs;
+ switch (Exp->getReceiverKind()) {
+ case ObjCMessageExpr::SuperClass: {
+ MsgSendFlavor = MsgSendSuperFunctionDecl;
+ if (MsgSendStretFlavor)
+ MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
+ assert(MsgSendFlavor && "MsgSendFlavor is NULL!");
+
+ ObjCInterfaceDecl *ClassDecl = CurMethodDef->getClassInterface();
+
+ SmallVector<Expr*, 4> InitExprs;
+
+ // set the receiver to self, the first argument to all methods.
+ InitExprs.push_back(
+ NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
+ CK_BitCast,
+ new (Context) DeclRefExpr(CurMethodDef->getSelfDecl(),
+ false,
+ Context->getObjCIdType(),
+ VK_RValue,
+ SourceLocation()))
+ ); // set the 'receiver'.
+
+ // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
+ SmallVector<Expr*, 8> ClsExprs;
+ ClsExprs.push_back(getStringLiteral(ClassDecl->getIdentifier()->getName()));
+ // (Class)objc_getClass("CurrentClass")
+ CallExpr *Cls = SynthesizeCallToFunctionDecl(GetMetaClassFunctionDecl,
+ &ClsExprs[0],
+ ClsExprs.size(),
+ StartLoc,
+ EndLoc);
+ ClsExprs.clear();
+ ClsExprs.push_back(Cls);
+ Cls = SynthesizeCallToFunctionDecl(GetSuperClassFunctionDecl,
+ &ClsExprs[0], ClsExprs.size(),
+ StartLoc, EndLoc);
+
+ // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
+ // To turn off a warning, type-cast to 'id'
+ InitExprs.push_back( // set 'super class', using class_getSuperclass().
+ NoTypeInfoCStyleCastExpr(Context,
+ Context->getObjCIdType(),
+ CK_BitCast, Cls));
+ // struct __rw_objc_super
+ QualType superType = getSuperStructType();
+ Expr *SuperRep;
+
+ if (LangOpts.MicrosoftExt) {
+ SynthSuperConstructorFunctionDecl();
+ // Simulate a constructor call...
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(SuperConstructorFunctionDecl,
+ false, superType, VK_LValue,
+ SourceLocation());
+ SuperRep = new (Context) CallExpr(*Context, DRE, InitExprs,
+ superType, VK_LValue,
+ SourceLocation());
+ // The code for super is a little tricky to prevent collision with
+ // the structure definition in the header. The rewriter has it's own
+ // internal definition (__rw_objc_super) that is uses. This is why
+ // we need the cast below. For example:
+ // (struct __rw_objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
+ //
+ SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
+ Context->getPointerType(SuperRep->getType()),
+ VK_RValue, OK_Ordinary,
+ SourceLocation());
+ SuperRep = NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(superType),
+ CK_BitCast, SuperRep);
+ } else {
+ // (struct __rw_objc_super) { <exprs from above> }
+ InitListExpr *ILE =
+ new (Context) InitListExpr(*Context, SourceLocation(), InitExprs,
+ SourceLocation());
+ TypeSourceInfo *superTInfo
+ = Context->getTrivialTypeSourceInfo(superType);
+ SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo,
+ superType, VK_LValue,
+ ILE, false);
+ // struct __rw_objc_super *
+ SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
+ Context->getPointerType(SuperRep->getType()),
+ VK_RValue, OK_Ordinary,
+ SourceLocation());
+ }
+ MsgExprs.push_back(SuperRep);
+ break;
+ }
+
+ case ObjCMessageExpr::Class: {
+ SmallVector<Expr*, 8> ClsExprs;
+ ObjCInterfaceDecl *Class
+ = Exp->getClassReceiver()->getAs<ObjCObjectType>()->getInterface();
+ IdentifierInfo *clsName = Class->getIdentifier();
+ ClsExprs.push_back(getStringLiteral(clsName->getName()));
+ CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
+ &ClsExprs[0],
+ ClsExprs.size(),
+ StartLoc, EndLoc);
+ CastExpr *ArgExpr = NoTypeInfoCStyleCastExpr(Context,
+ Context->getObjCIdType(),
+ CK_BitCast, Cls);
+ MsgExprs.push_back(ArgExpr);
+ break;
+ }
+
+ case ObjCMessageExpr::SuperInstance:{
+ MsgSendFlavor = MsgSendSuperFunctionDecl;
+ if (MsgSendStretFlavor)
+ MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
+ assert(MsgSendFlavor && "MsgSendFlavor is NULL!");
+ ObjCInterfaceDecl *ClassDecl = CurMethodDef->getClassInterface();
+ SmallVector<Expr*, 4> InitExprs;
+
+ InitExprs.push_back(
+ NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
+ CK_BitCast,
+ new (Context) DeclRefExpr(CurMethodDef->getSelfDecl(),
+ false,
+ Context->getObjCIdType(),
+ VK_RValue, SourceLocation()))
+ ); // set the 'receiver'.
+
+ // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
+ SmallVector<Expr*, 8> ClsExprs;
+ ClsExprs.push_back(getStringLiteral(ClassDecl->getIdentifier()->getName()));
+ // (Class)objc_getClass("CurrentClass")
+ CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
+ &ClsExprs[0],
+ ClsExprs.size(),
+ StartLoc, EndLoc);
+ ClsExprs.clear();
+ ClsExprs.push_back(Cls);
+ Cls = SynthesizeCallToFunctionDecl(GetSuperClassFunctionDecl,
+ &ClsExprs[0], ClsExprs.size(),
+ StartLoc, EndLoc);
+
+ // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
+ // To turn off a warning, type-cast to 'id'
+ InitExprs.push_back(
+ // set 'super class', using class_getSuperclass().
+ NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
+ CK_BitCast, Cls));
+ // struct __rw_objc_super
+ QualType superType = getSuperStructType();
+ Expr *SuperRep;
+
+ if (LangOpts.MicrosoftExt) {
+ SynthSuperConstructorFunctionDecl();
+ // Simulate a constructor call...
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(SuperConstructorFunctionDecl,
+ false, superType, VK_LValue,
+ SourceLocation());
+ SuperRep = new (Context) CallExpr(*Context, DRE, InitExprs,
+ superType, VK_LValue, SourceLocation());
+ // The code for super is a little tricky to prevent collision with
+ // the structure definition in the header. The rewriter has it's own
+ // internal definition (__rw_objc_super) that is uses. This is why
+ // we need the cast below. For example:
+ // (struct __rw_objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
+ //
+ SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
+ Context->getPointerType(SuperRep->getType()),
+ VK_RValue, OK_Ordinary,
+ SourceLocation());
+ SuperRep = NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(superType),
+ CK_BitCast, SuperRep);
+ } else {
+ // (struct __rw_objc_super) { <exprs from above> }
+ InitListExpr *ILE =
+ new (Context) InitListExpr(*Context, SourceLocation(), InitExprs,
+ SourceLocation());
+ TypeSourceInfo *superTInfo
+ = Context->getTrivialTypeSourceInfo(superType);
+ SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo,
+ superType, VK_RValue, ILE,
+ false);
+ }
+ MsgExprs.push_back(SuperRep);
+ break;
+ }
+
+ case ObjCMessageExpr::Instance: {
+ // Remove all type-casts because it may contain objc-style types; e.g.
+ // Foo<Proto> *.
+ Expr *recExpr = Exp->getInstanceReceiver();
+ while (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(recExpr))
+ recExpr = CE->getSubExpr();
+ CastKind CK = recExpr->getType()->isObjCObjectPointerType()
+ ? CK_BitCast : recExpr->getType()->isBlockPointerType()
+ ? CK_BlockPointerToObjCPointerCast
+ : CK_CPointerToObjCPointerCast;
+
+ recExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
+ CK, recExpr);
+ MsgExprs.push_back(recExpr);
+ break;
+ }
+ }
+
+ // Create a call to sel_registerName("selName"), it will be the 2nd argument.
+ SmallVector<Expr*, 8> SelExprs;
+ SelExprs.push_back(getStringLiteral(Exp->getSelector().getAsString()));
+ CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
+ &SelExprs[0], SelExprs.size(),
+ StartLoc,
+ EndLoc);
+ MsgExprs.push_back(SelExp);
+
+ // Now push any user supplied arguments.
+ for (unsigned i = 0; i < Exp->getNumArgs(); i++) {
+ Expr *userExpr = Exp->getArg(i);
+ // Make all implicit casts explicit...ICE comes in handy:-)
+ if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(userExpr)) {
+ // Reuse the ICE type, it is exactly what the doctor ordered.
+ QualType type = ICE->getType();
+ if (needToScanForQualifiers(type))
+ type = Context->getObjCIdType();
+ // Make sure we convert "type (^)(...)" to "type (*)(...)".
+ (void)convertBlockPointerToFunctionPointer(type);
+ const Expr *SubExpr = ICE->IgnoreParenImpCasts();
+ CastKind CK;
+ if (SubExpr->getType()->isIntegralType(*Context) &&
+ type->isBooleanType()) {
+ CK = CK_IntegralToBoolean;
+ } else if (type->isObjCObjectPointerType()) {
+ if (SubExpr->getType()->isBlockPointerType()) {
+ CK = CK_BlockPointerToObjCPointerCast;
+ } else if (SubExpr->getType()->isPointerType()) {
+ CK = CK_CPointerToObjCPointerCast;
+ } else {
+ CK = CK_BitCast;
+ }
+ } else {
+ CK = CK_BitCast;
+ }
+
+ userExpr = NoTypeInfoCStyleCastExpr(Context, type, CK, userExpr);
+ }
+ // Make id<P...> cast into an 'id' cast.
+ else if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(userExpr)) {
+ if (CE->getType()->isObjCQualifiedIdType()) {
+ while ((CE = dyn_cast<CStyleCastExpr>(userExpr)))
+ userExpr = CE->getSubExpr();
+ CastKind CK;
+ if (userExpr->getType()->isIntegralType(*Context)) {
+ CK = CK_IntegralToPointer;
+ } else if (userExpr->getType()->isBlockPointerType()) {
+ CK = CK_BlockPointerToObjCPointerCast;
+ } else if (userExpr->getType()->isPointerType()) {
+ CK = CK_CPointerToObjCPointerCast;
+ } else {
+ CK = CK_BitCast;
+ }
+ userExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
+ CK, userExpr);
+ }
+ }
+ MsgExprs.push_back(userExpr);
+ // We've transferred the ownership to MsgExprs. For now, we *don't* null
+ // out the argument in the original expression (since we aren't deleting
+ // the ObjCMessageExpr). See RewritePropertyOrImplicitSetter() usage for more info.
+ //Exp->setArg(i, 0);
+ }
+ // Generate the funky cast.
+ CastExpr *cast;
+ SmallVector<QualType, 8> ArgTypes;
+ QualType returnType;
+
+ // Push 'id' and 'SEL', the 2 implicit arguments.
+ if (MsgSendFlavor == MsgSendSuperFunctionDecl)
+ ArgTypes.push_back(Context->getPointerType(getSuperStructType()));
+ else
+ ArgTypes.push_back(Context->getObjCIdType());
+ ArgTypes.push_back(Context->getObjCSelType());
+ if (ObjCMethodDecl *OMD = Exp->getMethodDecl()) {
+ // Push any user argument types.
+ for (const auto *PI : OMD->params()) {
+ QualType t = PI->getType()->isObjCQualifiedIdType()
+ ? Context->getObjCIdType()
+ : PI->getType();
+ // Make sure we convert "t (^)(...)" to "t (*)(...)".
+ (void)convertBlockPointerToFunctionPointer(t);
+ ArgTypes.push_back(t);
+ }
+ returnType = Exp->getType();
+ convertToUnqualifiedObjCType(returnType);
+ (void)convertBlockPointerToFunctionPointer(returnType);
+ } else {
+ returnType = Context->getObjCIdType();
+ }
+ // Get the type, we will need to reference it in a couple spots.
+ QualType msgSendType = MsgSendFlavor->getType();
+
+ // Create a reference to the objc_msgSend() declaration.
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(MsgSendFlavor, false, msgSendType,
+ VK_LValue, SourceLocation());
+
+ // Need to cast objc_msgSend to "void *" (to workaround a GCC bandaid).
+ // If we don't do this cast, we get the following bizarre warning/note:
+ // xx.m:13: warning: function called through a non-compatible type
+ // xx.m:13: note: if this code is reached, the program will abort
+ cast = NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(Context->VoidTy),
+ CK_BitCast, DRE);
+
+ // Now do the "normal" pointer to function cast.
+ // If we don't have a method decl, force a variadic cast.
+ const ObjCMethodDecl *MD = Exp->getMethodDecl();
+ QualType castType =
+ getSimpleFunctionType(returnType, ArgTypes, MD ? MD->isVariadic() : true);
+ castType = Context->getPointerType(castType);
+ cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
+ cast);
+
+ // Don't forget the parens to enforce the proper binding.
+ ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);
+
+ const FunctionType *FT = msgSendType->getAs<FunctionType>();
+ CallExpr *CE = new (Context)
+ CallExpr(*Context, PE, MsgExprs, FT->getReturnType(), VK_RValue, EndLoc);
+ Stmt *ReplacingStmt = CE;
+ if (MsgSendStretFlavor) {
+ // We have the method which returns a struct/union. Must also generate
+ // call to objc_msgSend_stret and hang both varieties on a conditional
+ // expression which dictate which one to envoke depending on size of
+ // method's return type.
+
+ Expr *STCE = SynthMsgSendStretCallExpr(MsgSendStretFlavor,
+ returnType,
+ ArgTypes, MsgExprs,
+ Exp->getMethodDecl());
+ ReplacingStmt = STCE;
+ }
+ // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
+ return ReplacingStmt;
+}
+
+Stmt *RewriteModernObjC::RewriteMessageExpr(ObjCMessageExpr *Exp) {
+ Stmt *ReplacingStmt = SynthMessageExpr(Exp, Exp->getLocStart(),
+ Exp->getLocEnd());
+
+ // Now do the actual rewrite.
+ ReplaceStmt(Exp, ReplacingStmt);
+
+ // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
+ return ReplacingStmt;
+}
+
+// typedef struct objc_object Protocol;
+QualType RewriteModernObjC::getProtocolType() {
+ if (!ProtocolTypeDecl) {
+ TypeSourceInfo *TInfo
+ = Context->getTrivialTypeSourceInfo(Context->getObjCIdType());
+ ProtocolTypeDecl = TypedefDecl::Create(*Context, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get("Protocol"),
+ TInfo);
+ }
+ return Context->getTypeDeclType(ProtocolTypeDecl);
+}
+
+/// RewriteObjCProtocolExpr - Rewrite a protocol expression into
+/// a synthesized/forward data reference (to the protocol's metadata).
+/// The forward references (and metadata) are generated in
+/// RewriteModernObjC::HandleTranslationUnit().
+Stmt *RewriteModernObjC::RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp) {
+ std::string Name = "_OBJC_PROTOCOL_REFERENCE_$_" +
+ Exp->getProtocol()->getNameAsString();
+ IdentifierInfo *ID = &Context->Idents.get(Name);
+ VarDecl *VD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
+ SourceLocation(), ID, getProtocolType(),
+ nullptr, SC_Extern);
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(VD, false, getProtocolType(),
+ VK_LValue, SourceLocation());
+ CastExpr *castExpr =
+ NoTypeInfoCStyleCastExpr(
+ Context, Context->getPointerType(DRE->getType()), CK_BitCast, DRE);
+ ReplaceStmt(Exp, castExpr);
+ ProtocolExprDecls.insert(Exp->getProtocol()->getCanonicalDecl());
+ // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
+ return castExpr;
+
+}
+
+bool RewriteModernObjC::BufferContainsPPDirectives(const char *startBuf,
+ const char *endBuf) {
+ while (startBuf < endBuf) {
+ if (*startBuf == '#') {
+ // Skip whitespace.
+ for (++startBuf; startBuf[0] == ' ' || startBuf[0] == '\t'; ++startBuf)
+ ;
+ if (!strncmp(startBuf, "if", strlen("if")) ||
+ !strncmp(startBuf, "ifdef", strlen("ifdef")) ||
+ !strncmp(startBuf, "ifndef", strlen("ifndef")) ||
+ !strncmp(startBuf, "define", strlen("define")) ||
+ !strncmp(startBuf, "undef", strlen("undef")) ||
+ !strncmp(startBuf, "else", strlen("else")) ||
+ !strncmp(startBuf, "elif", strlen("elif")) ||
+ !strncmp(startBuf, "endif", strlen("endif")) ||
+ !strncmp(startBuf, "pragma", strlen("pragma")) ||
+ !strncmp(startBuf, "include", strlen("include")) ||
+ !strncmp(startBuf, "import", strlen("import")) ||
+ !strncmp(startBuf, "include_next", strlen("include_next")))
+ return true;
+ }
+ startBuf++;
+ }
+ return false;
+}
+
+/// IsTagDefinedInsideClass - This routine checks that a named tagged type
+/// is defined inside an objective-c class. If so, it returns true.
+bool RewriteModernObjC::IsTagDefinedInsideClass(ObjCContainerDecl *IDecl,
+ TagDecl *Tag,
+ bool &IsNamedDefinition) {
+ if (!IDecl)
+ return false;
+ SourceLocation TagLocation;
+ if (RecordDecl *RD = dyn_cast<RecordDecl>(Tag)) {
+ RD = RD->getDefinition();
+ if (!RD || !RD->getDeclName().getAsIdentifierInfo())
+ return false;
+ IsNamedDefinition = true;
+ TagLocation = RD->getLocation();
+ return Context->getSourceManager().isBeforeInTranslationUnit(
+ IDecl->getLocation(), TagLocation);
+ }
+ if (EnumDecl *ED = dyn_cast<EnumDecl>(Tag)) {
+ if (!ED || !ED->getDeclName().getAsIdentifierInfo())
+ return false;
+ IsNamedDefinition = true;
+ TagLocation = ED->getLocation();
+ return Context->getSourceManager().isBeforeInTranslationUnit(
+ IDecl->getLocation(), TagLocation);
+
+ }
+ return false;
+}
+
+/// RewriteObjCFieldDeclType - This routine rewrites a type into the buffer.
+/// It handles elaborated types, as well as enum types in the process.
+bool RewriteModernObjC::RewriteObjCFieldDeclType(QualType &Type,
+ std::string &Result) {
+ if (isa<TypedefType>(Type)) {
+ Result += "\t";
+ return false;
+ }
+
+ if (Type->isArrayType()) {
+ QualType ElemTy = Context->getBaseElementType(Type);
+ return RewriteObjCFieldDeclType(ElemTy, Result);
+ }
+ else if (Type->isRecordType()) {
+ RecordDecl *RD = Type->getAs<RecordType>()->getDecl();
+ if (RD->isCompleteDefinition()) {
+ if (RD->isStruct())
+ Result += "\n\tstruct ";
+ else if (RD->isUnion())
+ Result += "\n\tunion ";
+ else
+ assert(false && "class not allowed as an ivar type");
+
+ Result += RD->getName();
+ if (GlobalDefinedTags.count(RD)) {
+ // struct/union is defined globally, use it.
+ Result += " ";
+ return true;
+ }
+ Result += " {\n";
+ for (auto *FD : RD->fields())
+ RewriteObjCFieldDecl(FD, Result);
+ Result += "\t} ";
+ return true;
+ }
+ }
+ else if (Type->isEnumeralType()) {
+ EnumDecl *ED = Type->getAs<EnumType>()->getDecl();
+ if (ED->isCompleteDefinition()) {
+ Result += "\n\tenum ";
+ Result += ED->getName();
+ if (GlobalDefinedTags.count(ED)) {
+ // Enum is globall defined, use it.
+ Result += " ";
+ return true;
+ }
+
+ Result += " {\n";
+ for (const auto *EC : ED->enumerators()) {
+ Result += "\t"; Result += EC->getName(); Result += " = ";
+ llvm::APSInt Val = EC->getInitVal();
+ Result += Val.toString(10);
+ Result += ",\n";
+ }
+ Result += "\t} ";
+ return true;
+ }
+ }
+
+ Result += "\t";
+ convertObjCTypeToCStyleType(Type);
+ return false;
+}
+
+
+/// RewriteObjCFieldDecl - This routine rewrites a field into the buffer.
+/// It handles elaborated types, as well as enum types in the process.
+void RewriteModernObjC::RewriteObjCFieldDecl(FieldDecl *fieldDecl,
+ std::string &Result) {
+ QualType Type = fieldDecl->getType();
+ std::string Name = fieldDecl->getNameAsString();
+
+ bool EleboratedType = RewriteObjCFieldDeclType(Type, Result);
+ if (!EleboratedType)
+ Type.getAsStringInternal(Name, Context->getPrintingPolicy());
+ Result += Name;
+ if (fieldDecl->isBitField()) {
+ Result += " : "; Result += utostr(fieldDecl->getBitWidthValue(*Context));
+ }
+ else if (EleboratedType && Type->isArrayType()) {
+ const ArrayType *AT = Context->getAsArrayType(Type);
+ do {
+ if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(AT)) {
+ Result += "[";
+ llvm::APInt Dim = CAT->getSize();
+ Result += utostr(Dim.getZExtValue());
+ Result += "]";
+ }
+ AT = Context->getAsArrayType(AT->getElementType());
+ } while (AT);
+ }
+
+ Result += ";\n";
+}
+
+/// RewriteLocallyDefinedNamedAggregates - This routine rewrites locally defined
+/// named aggregate types into the input buffer.
+void RewriteModernObjC::RewriteLocallyDefinedNamedAggregates(FieldDecl *fieldDecl,
+ std::string &Result) {
+ QualType Type = fieldDecl->getType();
+ if (isa<TypedefType>(Type))
+ return;
+ if (Type->isArrayType())
+ Type = Context->getBaseElementType(Type);
+ ObjCContainerDecl *IDecl =
+ dyn_cast<ObjCContainerDecl>(fieldDecl->getDeclContext());
+
+ TagDecl *TD = nullptr;
+ if (Type->isRecordType()) {
+ TD = Type->getAs<RecordType>()->getDecl();
+ }
+ else if (Type->isEnumeralType()) {
+ TD = Type->getAs<EnumType>()->getDecl();
+ }
+
+ if (TD) {
+ if (GlobalDefinedTags.count(TD))
+ return;
+
+ bool IsNamedDefinition = false;
+ if (IsTagDefinedInsideClass(IDecl, TD, IsNamedDefinition)) {
+ RewriteObjCFieldDeclType(Type, Result);
+ Result += ";";
+ }
+ if (IsNamedDefinition)
+ GlobalDefinedTags.insert(TD);
+ }
+
+}
+
+unsigned RewriteModernObjC::ObjCIvarBitfieldGroupNo(ObjCIvarDecl *IV) {
+ const ObjCInterfaceDecl *CDecl = IV->getContainingInterface();
+ if (ObjCInterefaceHasBitfieldGroups.count(CDecl)) {
+ return IvarGroupNumber[IV];
+ }
+ unsigned GroupNo = 0;
+ SmallVector<const ObjCIvarDecl *, 8> IVars;
+ for (const ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
+ IVD; IVD = IVD->getNextIvar())
+ IVars.push_back(IVD);
+
+ for (unsigned i = 0, e = IVars.size(); i < e; i++)
+ if (IVars[i]->isBitField()) {
+ IvarGroupNumber[IVars[i++]] = ++GroupNo;
+ while (i < e && IVars[i]->isBitField())
+ IvarGroupNumber[IVars[i++]] = GroupNo;
+ if (i < e)
+ --i;
+ }
+
+ ObjCInterefaceHasBitfieldGroups.insert(CDecl);
+ return IvarGroupNumber[IV];
+}
+
+QualType RewriteModernObjC::SynthesizeBitfieldGroupStructType(
+ ObjCIvarDecl *IV,
+ SmallVectorImpl<ObjCIvarDecl *> &IVars) {
+ std::string StructTagName;
+ ObjCIvarBitfieldGroupType(IV, StructTagName);
+ RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct,
+ Context->getTranslationUnitDecl(),
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get(StructTagName));
+ for (unsigned i=0, e = IVars.size(); i < e; i++) {
+ ObjCIvarDecl *Ivar = IVars[i];
+ RD->addDecl(FieldDecl::Create(*Context, RD, SourceLocation(), SourceLocation(),
+ &Context->Idents.get(Ivar->getName()),
+ Ivar->getType(),
+ nullptr, /*Expr *BW */Ivar->getBitWidth(),
+ false, ICIS_NoInit));
+ }
+ RD->completeDefinition();
+ return Context->getTagDeclType(RD);
+}
+
+QualType RewriteModernObjC::GetGroupRecordTypeForObjCIvarBitfield(ObjCIvarDecl *IV) {
+ const ObjCInterfaceDecl *CDecl = IV->getContainingInterface();
+ unsigned GroupNo = ObjCIvarBitfieldGroupNo(IV);
+ std::pair<const ObjCInterfaceDecl*, unsigned> tuple = std::make_pair(CDecl, GroupNo);
+ if (GroupRecordType.count(tuple))
+ return GroupRecordType[tuple];
+
+ SmallVector<ObjCIvarDecl *, 8> IVars;
+ for (const ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
+ IVD; IVD = IVD->getNextIvar()) {
+ if (IVD->isBitField())
+ IVars.push_back(const_cast<ObjCIvarDecl *>(IVD));
+ else {
+ if (!IVars.empty()) {
+ unsigned GroupNo = ObjCIvarBitfieldGroupNo(IVars[0]);
+ // Generate the struct type for this group of bitfield ivars.
+ GroupRecordType[std::make_pair(CDecl, GroupNo)] =
+ SynthesizeBitfieldGroupStructType(IVars[0], IVars);
+ IVars.clear();
+ }
+ }
+ }
+ if (!IVars.empty()) {
+ // Do the last one.
+ unsigned GroupNo = ObjCIvarBitfieldGroupNo(IVars[0]);
+ GroupRecordType[std::make_pair(CDecl, GroupNo)] =
+ SynthesizeBitfieldGroupStructType(IVars[0], IVars);
+ }
+ QualType RetQT = GroupRecordType[tuple];
+ assert(!RetQT.isNull() && "GetGroupRecordTypeForObjCIvarBitfield struct type is NULL");
+
+ return RetQT;
+}
+
+/// ObjCIvarBitfieldGroupDecl - Names field decl. for ivar bitfield group.
+/// Name would be: classname__GRBF_n where n is the group number for this ivar.
+void RewriteModernObjC::ObjCIvarBitfieldGroupDecl(ObjCIvarDecl *IV,
+ std::string &Result) {
+ const ObjCInterfaceDecl *CDecl = IV->getContainingInterface();
+ Result += CDecl->getName();
+ Result += "__GRBF_";
+ unsigned GroupNo = ObjCIvarBitfieldGroupNo(IV);
+ Result += utostr(GroupNo);
+ return;
+}
+
+/// ObjCIvarBitfieldGroupType - Names struct type for ivar bitfield group.
+/// Name of the struct would be: classname__T_n where n is the group number for
+/// this ivar.
+void RewriteModernObjC::ObjCIvarBitfieldGroupType(ObjCIvarDecl *IV,
+ std::string &Result) {
+ const ObjCInterfaceDecl *CDecl = IV->getContainingInterface();
+ Result += CDecl->getName();
+ Result += "__T_";
+ unsigned GroupNo = ObjCIvarBitfieldGroupNo(IV);
+ Result += utostr(GroupNo);
+ return;
+}
+
+/// ObjCIvarBitfieldGroupOffset - Names symbol for ivar bitfield group field offset.
+/// Name would be: OBJC_IVAR_$_classname__GRBF_n where n is the group number for
+/// this ivar.
+void RewriteModernObjC::ObjCIvarBitfieldGroupOffset(ObjCIvarDecl *IV,
+ std::string &Result) {
+ Result += "OBJC_IVAR_$_";
+ ObjCIvarBitfieldGroupDecl(IV, Result);
+}
+
+#define SKIP_BITFIELDS(IX, ENDIX, VEC) { \
+ while ((IX < ENDIX) && VEC[IX]->isBitField()) \
+ ++IX; \
+ if (IX < ENDIX) \
+ --IX; \
+}
+
+/// RewriteObjCInternalStruct - Rewrite one internal struct corresponding to
+/// an objective-c class with ivars.
+void RewriteModernObjC::RewriteObjCInternalStruct(ObjCInterfaceDecl *CDecl,
+ std::string &Result) {
+ assert(CDecl && "Class missing in SynthesizeObjCInternalStruct");
+ assert(CDecl->getName() != "" &&
+ "Name missing in SynthesizeObjCInternalStruct");
+ ObjCInterfaceDecl *RCDecl = CDecl->getSuperClass();
+ SmallVector<ObjCIvarDecl *, 8> IVars;
+ for (ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
+ IVD; IVD = IVD->getNextIvar())
+ IVars.push_back(IVD);
+
+ SourceLocation LocStart = CDecl->getLocStart();
+ SourceLocation LocEnd = CDecl->getEndOfDefinitionLoc();
+
+ const char *startBuf = SM->getCharacterData(LocStart);
+ const char *endBuf = SM->getCharacterData(LocEnd);
+
+ // If no ivars and no root or if its root, directly or indirectly,
+ // have no ivars (thus not synthesized) then no need to synthesize this class.
+ if ((!CDecl->isThisDeclarationADefinition() || IVars.size() == 0) &&
+ (!RCDecl || !ObjCSynthesizedStructs.count(RCDecl))) {
+ endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts);
+ ReplaceText(LocStart, endBuf-startBuf, Result);
+ return;
+ }
+
+ // Insert named struct/union definitions inside class to
+ // outer scope. This follows semantics of locally defined
+ // struct/unions in objective-c classes.
+ for (unsigned i = 0, e = IVars.size(); i < e; i++)
+ RewriteLocallyDefinedNamedAggregates(IVars[i], Result);
+
+ // Insert named structs which are syntheized to group ivar bitfields
+ // to outer scope as well.
+ for (unsigned i = 0, e = IVars.size(); i < e; i++)
+ if (IVars[i]->isBitField()) {
+ ObjCIvarDecl *IV = IVars[i];
+ QualType QT = GetGroupRecordTypeForObjCIvarBitfield(IV);
+ RewriteObjCFieldDeclType(QT, Result);
+ Result += ";";
+ // skip over ivar bitfields in this group.
+ SKIP_BITFIELDS(i , e, IVars);
+ }
+
+ Result += "\nstruct ";
+ Result += CDecl->getNameAsString();
+ Result += "_IMPL {\n";
+
+ if (RCDecl && ObjCSynthesizedStructs.count(RCDecl)) {
+ Result += "\tstruct "; Result += RCDecl->getNameAsString();
+ Result += "_IMPL "; Result += RCDecl->getNameAsString();
+ Result += "_IVARS;\n";
+ }
+
+ for (unsigned i = 0, e = IVars.size(); i < e; i++) {
+ if (IVars[i]->isBitField()) {
+ ObjCIvarDecl *IV = IVars[i];
+ Result += "\tstruct ";
+ ObjCIvarBitfieldGroupType(IV, Result); Result += " ";
+ ObjCIvarBitfieldGroupDecl(IV, Result); Result += ";\n";
+ // skip over ivar bitfields in this group.
+ SKIP_BITFIELDS(i , e, IVars);
+ }
+ else
+ RewriteObjCFieldDecl(IVars[i], Result);
+ }
+
+ Result += "};\n";
+ endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts);
+ ReplaceText(LocStart, endBuf-startBuf, Result);
+ // Mark this struct as having been generated.
+ if (!ObjCSynthesizedStructs.insert(CDecl).second)
+ llvm_unreachable("struct already synthesize- RewriteObjCInternalStruct");
+}
+
+/// RewriteIvarOffsetSymbols - Rewrite ivar offset symbols of those ivars which
+/// have been referenced in an ivar access expression.
+void RewriteModernObjC::RewriteIvarOffsetSymbols(ObjCInterfaceDecl *CDecl,
+ std::string &Result) {
+ // write out ivar offset symbols which have been referenced in an ivar
+ // access expression.
+ llvm::SmallPtrSet<ObjCIvarDecl *, 8> Ivars = ReferencedIvars[CDecl];
+ if (Ivars.empty())
+ return;
+
+ llvm::DenseSet<std::pair<const ObjCInterfaceDecl*, unsigned> > GroupSymbolOutput;
+ for (ObjCIvarDecl *IvarDecl : Ivars) {
+ const ObjCInterfaceDecl *IDecl = IvarDecl->getContainingInterface();
+ unsigned GroupNo = 0;
+ if (IvarDecl->isBitField()) {
+ GroupNo = ObjCIvarBitfieldGroupNo(IvarDecl);
+ if (GroupSymbolOutput.count(std::make_pair(IDecl, GroupNo)))
+ continue;
+ }
+ Result += "\n";
+ if (LangOpts.MicrosoftExt)
+ Result += "__declspec(allocate(\".objc_ivar$B\")) ";
+ Result += "extern \"C\" ";
+ if (LangOpts.MicrosoftExt &&
+ IvarDecl->getAccessControl() != ObjCIvarDecl::Private &&
+ IvarDecl->getAccessControl() != ObjCIvarDecl::Package)
+ Result += "__declspec(dllimport) ";
+
+ Result += "unsigned long ";
+ if (IvarDecl->isBitField()) {
+ ObjCIvarBitfieldGroupOffset(IvarDecl, Result);
+ GroupSymbolOutput.insert(std::make_pair(IDecl, GroupNo));
+ }
+ else
+ WriteInternalIvarName(CDecl, IvarDecl, Result);
+ Result += ";";
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// Meta Data Emission
+//===----------------------------------------------------------------------===//
+
+
+/// RewriteImplementations - This routine rewrites all method implementations
+/// and emits meta-data.
+
+void RewriteModernObjC::RewriteImplementations() {
+ int ClsDefCount = ClassImplementation.size();
+ int CatDefCount = CategoryImplementation.size();
+
+ // Rewrite implemented methods
+ for (int i = 0; i < ClsDefCount; i++) {
+ ObjCImplementationDecl *OIMP = ClassImplementation[i];
+ ObjCInterfaceDecl *CDecl = OIMP->getClassInterface();
+ if (CDecl->isImplicitInterfaceDecl())
+ assert(false &&
+ "Legacy implicit interface rewriting not supported in moder abi");
+ RewriteImplementationDecl(OIMP);
+ }
+
+ for (int i = 0; i < CatDefCount; i++) {
+ ObjCCategoryImplDecl *CIMP = CategoryImplementation[i];
+ ObjCInterfaceDecl *CDecl = CIMP->getClassInterface();
+ if (CDecl->isImplicitInterfaceDecl())
+ assert(false &&
+ "Legacy implicit interface rewriting not supported in moder abi");
+ RewriteImplementationDecl(CIMP);
+ }
+}
+
+void RewriteModernObjC::RewriteByRefString(std::string &ResultStr,
+ const std::string &Name,
+ ValueDecl *VD, bool def) {
+ assert(BlockByRefDeclNo.count(VD) &&
+ "RewriteByRefString: ByRef decl missing");
+ if (def)
+ ResultStr += "struct ";
+ ResultStr += "__Block_byref_" + Name +
+ "_" + utostr(BlockByRefDeclNo[VD]) ;
+}
+
+static bool HasLocalVariableExternalStorage(ValueDecl *VD) {
+ if (VarDecl *Var = dyn_cast<VarDecl>(VD))
+ return (Var->isFunctionOrMethodVarDecl() && !Var->hasLocalStorage());
+ return false;
+}
+
+std::string RewriteModernObjC::SynthesizeBlockFunc(BlockExpr *CE, int i,
+ StringRef funcName,
+ std::string Tag) {
+ const FunctionType *AFT = CE->getFunctionType();
+ QualType RT = AFT->getReturnType();
+ std::string StructRef = "struct " + Tag;
+ SourceLocation BlockLoc = CE->getExprLoc();
+ std::string S;
+ ConvertSourceLocationToLineDirective(BlockLoc, S);
+
+ S += "static " + RT.getAsString(Context->getPrintingPolicy()) + " __" +
+ funcName.str() + "_block_func_" + utostr(i);
+
+ BlockDecl *BD = CE->getBlockDecl();
+
+ if (isa<FunctionNoProtoType>(AFT)) {
+ // No user-supplied arguments. Still need to pass in a pointer to the
+ // block (to reference imported block decl refs).
+ S += "(" + StructRef + " *__cself)";
+ } else if (BD->param_empty()) {
+ S += "(" + StructRef + " *__cself)";
+ } else {
+ const FunctionProtoType *FT = cast<FunctionProtoType>(AFT);
+ assert(FT && "SynthesizeBlockFunc: No function proto");
+ S += '(';
+ // first add the implicit argument.
+ S += StructRef + " *__cself, ";
+ std::string ParamStr;
+ for (BlockDecl::param_iterator AI = BD->param_begin(),
+ E = BD->param_end(); AI != E; ++AI) {
+ if (AI != BD->param_begin()) S += ", ";
+ ParamStr = (*AI)->getNameAsString();
+ QualType QT = (*AI)->getType();
+ (void)convertBlockPointerToFunctionPointer(QT);
+ QT.getAsStringInternal(ParamStr, Context->getPrintingPolicy());
+ S += ParamStr;
+ }
+ if (FT->isVariadic()) {
+ if (!BD->param_empty()) S += ", ";
+ S += "...";
+ }
+ S += ')';
+ }
+ S += " {\n";
+
+ // Create local declarations to avoid rewriting all closure decl ref exprs.
+ // First, emit a declaration for all "by ref" decls.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
+ E = BlockByRefDecls.end(); I != E; ++I) {
+ S += " ";
+ std::string Name = (*I)->getNameAsString();
+ std::string TypeString;
+ RewriteByRefString(TypeString, Name, (*I));
+ TypeString += " *";
+ Name = TypeString + Name;
+ S += Name + " = __cself->" + (*I)->getNameAsString() + "; // bound by ref\n";
+ }
+ // Next, emit a declaration for all "by copy" declarations.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
+ E = BlockByCopyDecls.end(); I != E; ++I) {
+ S += " ";
+ // Handle nested closure invocation. For example:
+ //
+ // void (^myImportedClosure)(void);
+ // myImportedClosure = ^(void) { setGlobalInt(x + y); };
+ //
+ // void (^anotherClosure)(void);
+ // anotherClosure = ^(void) {
+ // myImportedClosure(); // import and invoke the closure
+ // };
+ //
+ if (isTopLevelBlockPointerType((*I)->getType())) {
+ RewriteBlockPointerTypeVariable(S, (*I));
+ S += " = (";
+ RewriteBlockPointerType(S, (*I)->getType());
+ S += ")";
+ S += "__cself->" + (*I)->getNameAsString() + "; // bound by copy\n";
+ }
+ else {
+ std::string Name = (*I)->getNameAsString();
+ QualType QT = (*I)->getType();
+ if (HasLocalVariableExternalStorage(*I))
+ QT = Context->getPointerType(QT);
+ QT.getAsStringInternal(Name, Context->getPrintingPolicy());
+ S += Name + " = __cself->" +
+ (*I)->getNameAsString() + "; // bound by copy\n";
+ }
+ }
+ std::string RewrittenStr = RewrittenBlockExprs[CE];
+ const char *cstr = RewrittenStr.c_str();
+ while (*cstr++ != '{') ;
+ S += cstr;
+ S += "\n";
+ return S;
+}
+
+std::string RewriteModernObjC::SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
+ StringRef funcName,
+ std::string Tag) {
+ std::string StructRef = "struct " + Tag;
+ std::string S = "static void __";
+
+ S += funcName;
+ S += "_block_copy_" + utostr(i);
+ S += "(" + StructRef;
+ S += "*dst, " + StructRef;
+ S += "*src) {";
+ for (ValueDecl *VD : ImportedBlockDecls) {
+ S += "_Block_object_assign((void*)&dst->";
+ S += VD->getNameAsString();
+ S += ", (void*)src->";
+ S += VD->getNameAsString();
+ if (BlockByRefDeclsPtrSet.count(VD))
+ S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);";
+ else if (VD->getType()->isBlockPointerType())
+ S += ", " + utostr(BLOCK_FIELD_IS_BLOCK) + "/*BLOCK_FIELD_IS_BLOCK*/);";
+ else
+ S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);";
+ }
+ S += "}\n";
+
+ S += "\nstatic void __";
+ S += funcName;
+ S += "_block_dispose_" + utostr(i);
+ S += "(" + StructRef;
+ S += "*src) {";
+ for (ValueDecl *VD : ImportedBlockDecls) {
+ S += "_Block_object_dispose((void*)src->";
+ S += VD->getNameAsString();
+ if (BlockByRefDeclsPtrSet.count(VD))
+ S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);";
+ else if (VD->getType()->isBlockPointerType())
+ S += ", " + utostr(BLOCK_FIELD_IS_BLOCK) + "/*BLOCK_FIELD_IS_BLOCK*/);";
+ else
+ S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);";
+ }
+ S += "}\n";
+ return S;
+}
+
+std::string RewriteModernObjC::SynthesizeBlockImpl(BlockExpr *CE, std::string Tag,
+ std::string Desc) {
+ std::string S = "\nstruct " + Tag;
+ std::string Constructor = " " + Tag;
+
+ S += " {\n struct __block_impl impl;\n";
+ S += " struct " + Desc;
+ S += "* Desc;\n";
+
+ Constructor += "(void *fp, "; // Invoke function pointer.
+ Constructor += "struct " + Desc; // Descriptor pointer.
+ Constructor += " *desc";
+
+ if (BlockDeclRefs.size()) {
+ // Output all "by copy" declarations.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
+ E = BlockByCopyDecls.end(); I != E; ++I) {
+ S += " ";
+ std::string FieldName = (*I)->getNameAsString();
+ std::string ArgName = "_" + FieldName;
+ // Handle nested closure invocation. For example:
+ //
+ // void (^myImportedBlock)(void);
+ // myImportedBlock = ^(void) { setGlobalInt(x + y); };
+ //
+ // void (^anotherBlock)(void);
+ // anotherBlock = ^(void) {
+ // myImportedBlock(); // import and invoke the closure
+ // };
+ //
+ if (isTopLevelBlockPointerType((*I)->getType())) {
+ S += "struct __block_impl *";
+ Constructor += ", void *" + ArgName;
+ } else {
+ QualType QT = (*I)->getType();
+ if (HasLocalVariableExternalStorage(*I))
+ QT = Context->getPointerType(QT);
+ QT.getAsStringInternal(FieldName, Context->getPrintingPolicy());
+ QT.getAsStringInternal(ArgName, Context->getPrintingPolicy());
+ Constructor += ", " + ArgName;
+ }
+ S += FieldName + ";\n";
+ }
+ // Output all "by ref" declarations.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
+ E = BlockByRefDecls.end(); I != E; ++I) {
+ S += " ";
+ std::string FieldName = (*I)->getNameAsString();
+ std::string ArgName = "_" + FieldName;
+ {
+ std::string TypeString;
+ RewriteByRefString(TypeString, FieldName, (*I));
+ TypeString += " *";
+ FieldName = TypeString + FieldName;
+ ArgName = TypeString + ArgName;
+ Constructor += ", " + ArgName;
+ }
+ S += FieldName + "; // by ref\n";
+ }
+ // Finish writing the constructor.
+ Constructor += ", int flags=0)";
+ // Initialize all "by copy" arguments.
+ bool firsTime = true;
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
+ E = BlockByCopyDecls.end(); I != E; ++I) {
+ std::string Name = (*I)->getNameAsString();
+ if (firsTime) {
+ Constructor += " : ";
+ firsTime = false;
+ }
+ else
+ Constructor += ", ";
+ if (isTopLevelBlockPointerType((*I)->getType()))
+ Constructor += Name + "((struct __block_impl *)_" + Name + ")";
+ else
+ Constructor += Name + "(_" + Name + ")";
+ }
+ // Initialize all "by ref" arguments.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
+ E = BlockByRefDecls.end(); I != E; ++I) {
+ std::string Name = (*I)->getNameAsString();
+ if (firsTime) {
+ Constructor += " : ";
+ firsTime = false;
+ }
+ else
+ Constructor += ", ";
+ Constructor += Name + "(_" + Name + "->__forwarding)";
+ }
+
+ Constructor += " {\n";
+ if (GlobalVarDecl)
+ Constructor += " impl.isa = &_NSConcreteGlobalBlock;\n";
+ else
+ Constructor += " impl.isa = &_NSConcreteStackBlock;\n";
+ Constructor += " impl.Flags = flags;\n impl.FuncPtr = fp;\n";
+
+ Constructor += " Desc = desc;\n";
+ } else {
+ // Finish writing the constructor.
+ Constructor += ", int flags=0) {\n";
+ if (GlobalVarDecl)
+ Constructor += " impl.isa = &_NSConcreteGlobalBlock;\n";
+ else
+ Constructor += " impl.isa = &_NSConcreteStackBlock;\n";
+ Constructor += " impl.Flags = flags;\n impl.FuncPtr = fp;\n";
+ Constructor += " Desc = desc;\n";
+ }
+ Constructor += " ";
+ Constructor += "}\n";
+ S += Constructor;
+ S += "};\n";
+ return S;
+}
+
+std::string RewriteModernObjC::SynthesizeBlockDescriptor(std::string DescTag,
+ std::string ImplTag, int i,
+ StringRef FunName,
+ unsigned hasCopy) {
+ std::string S = "\nstatic struct " + DescTag;
+
+ S += " {\n size_t reserved;\n";
+ S += " size_t Block_size;\n";
+ if (hasCopy) {
+ S += " void (*copy)(struct ";
+ S += ImplTag; S += "*, struct ";
+ S += ImplTag; S += "*);\n";
+
+ S += " void (*dispose)(struct ";
+ S += ImplTag; S += "*);\n";
+ }
+ S += "} ";
+
+ S += DescTag + "_DATA = { 0, sizeof(struct ";
+ S += ImplTag + ")";
+ if (hasCopy) {
+ S += ", __" + FunName.str() + "_block_copy_" + utostr(i);
+ S += ", __" + FunName.str() + "_block_dispose_" + utostr(i);
+ }
+ S += "};\n";
+ return S;
+}
+
+void RewriteModernObjC::SynthesizeBlockLiterals(SourceLocation FunLocStart,
+ StringRef FunName) {
+ bool RewriteSC = (GlobalVarDecl &&
+ !Blocks.empty() &&
+ GlobalVarDecl->getStorageClass() == SC_Static &&
+ GlobalVarDecl->getType().getCVRQualifiers());
+ if (RewriteSC) {
+ std::string SC(" void __");
+ SC += GlobalVarDecl->getNameAsString();
+ SC += "() {}";
+ InsertText(FunLocStart, SC);
+ }
+
+ // Insert closures that were part of the function.
+ for (unsigned i = 0, count=0; i < Blocks.size(); i++) {
+ CollectBlockDeclRefInfo(Blocks[i]);
+ // Need to copy-in the inner copied-in variables not actually used in this
+ // block.
+ for (int j = 0; j < InnerDeclRefsCount[i]; j++) {
+ DeclRefExpr *Exp = InnerDeclRefs[count++];
+ ValueDecl *VD = Exp->getDecl();
+ BlockDeclRefs.push_back(Exp);
+ if (!VD->hasAttr<BlocksAttr>()) {
+ if (!BlockByCopyDeclsPtrSet.count(VD)) {
+ BlockByCopyDeclsPtrSet.insert(VD);
+ BlockByCopyDecls.push_back(VD);
+ }
+ continue;
+ }
+
+ if (!BlockByRefDeclsPtrSet.count(VD)) {
+ BlockByRefDeclsPtrSet.insert(VD);
+ BlockByRefDecls.push_back(VD);
+ }
+
+ // imported objects in the inner blocks not used in the outer
+ // blocks must be copied/disposed in the outer block as well.
+ if (VD->getType()->isObjCObjectPointerType() ||
+ VD->getType()->isBlockPointerType())
+ ImportedBlockDecls.insert(VD);
+ }
+
+ std::string ImplTag = "__" + FunName.str() + "_block_impl_" + utostr(i);
+ std::string DescTag = "__" + FunName.str() + "_block_desc_" + utostr(i);
+
+ std::string CI = SynthesizeBlockImpl(Blocks[i], ImplTag, DescTag);
+
+ InsertText(FunLocStart, CI);
+
+ std::string CF = SynthesizeBlockFunc(Blocks[i], i, FunName, ImplTag);
+
+ InsertText(FunLocStart, CF);
+
+ if (ImportedBlockDecls.size()) {
+ std::string HF = SynthesizeBlockHelperFuncs(Blocks[i], i, FunName, ImplTag);
+ InsertText(FunLocStart, HF);
+ }
+ std::string BD = SynthesizeBlockDescriptor(DescTag, ImplTag, i, FunName,
+ ImportedBlockDecls.size() > 0);
+ InsertText(FunLocStart, BD);
+
+ BlockDeclRefs.clear();
+ BlockByRefDecls.clear();
+ BlockByRefDeclsPtrSet.clear();
+ BlockByCopyDecls.clear();
+ BlockByCopyDeclsPtrSet.clear();
+ ImportedBlockDecls.clear();
+ }
+ if (RewriteSC) {
+ // Must insert any 'const/volatile/static here. Since it has been
+ // removed as result of rewriting of block literals.
+ std::string SC;
+ if (GlobalVarDecl->getStorageClass() == SC_Static)
+ SC = "static ";
+ if (GlobalVarDecl->getType().isConstQualified())
+ SC += "const ";
+ if (GlobalVarDecl->getType().isVolatileQualified())
+ SC += "volatile ";
+ if (GlobalVarDecl->getType().isRestrictQualified())
+ SC += "restrict ";
+ InsertText(FunLocStart, SC);
+ }
+ if (GlobalConstructionExp) {
+ // extra fancy dance for global literal expression.
+
+ // Always the latest block expression on the block stack.
+ std::string Tag = "__";
+ Tag += FunName;
+ Tag += "_block_impl_";
+ Tag += utostr(Blocks.size()-1);
+ std::string globalBuf = "static ";
+ globalBuf += Tag; globalBuf += " ";
+ std::string SStr;
+
+ llvm::raw_string_ostream constructorExprBuf(SStr);
+ GlobalConstructionExp->printPretty(constructorExprBuf, nullptr,
+ PrintingPolicy(LangOpts));
+ globalBuf += constructorExprBuf.str();
+ globalBuf += ";\n";
+ InsertText(FunLocStart, globalBuf);
+ GlobalConstructionExp = nullptr;
+ }
+
+ Blocks.clear();
+ InnerDeclRefsCount.clear();
+ InnerDeclRefs.clear();
+ RewrittenBlockExprs.clear();
+}
+
+void RewriteModernObjC::InsertBlockLiteralsWithinFunction(FunctionDecl *FD) {
+ SourceLocation FunLocStart =
+ (!Blocks.empty()) ? getFunctionSourceLocation(*this, FD)
+ : FD->getTypeSpecStartLoc();
+ StringRef FuncName = FD->getName();
+
+ SynthesizeBlockLiterals(FunLocStart, FuncName);
+}
+
+static void BuildUniqueMethodName(std::string &Name,
+ ObjCMethodDecl *MD) {
+ ObjCInterfaceDecl *IFace = MD->getClassInterface();
+ Name = IFace->getName();
+ Name += "__" + MD->getSelector().getAsString();
+ // Convert colons to underscores.
+ std::string::size_type loc = 0;
+ while ((loc = Name.find(":", loc)) != std::string::npos)
+ Name.replace(loc, 1, "_");
+}
+
+void RewriteModernObjC::InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD) {
+ //fprintf(stderr,"In InsertBlockLiteralsWitinMethod\n");
+ //SourceLocation FunLocStart = MD->getLocStart();
+ SourceLocation FunLocStart = MD->getLocStart();
+ std::string FuncName;
+ BuildUniqueMethodName(FuncName, MD);
+ SynthesizeBlockLiterals(FunLocStart, FuncName);
+}
+
+void RewriteModernObjC::GetBlockDeclRefExprs(Stmt *S) {
+ for (Stmt::child_range CI = S->children(); CI; ++CI)
+ if (*CI) {
+ if (BlockExpr *CBE = dyn_cast<BlockExpr>(*CI))
+ GetBlockDeclRefExprs(CBE->getBody());
+ else
+ GetBlockDeclRefExprs(*CI);
+ }
+ // Handle specific things.
+ if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
+ if (DRE->refersToEnclosingLocal()) {
+ // FIXME: Handle enums.
+ if (!isa<FunctionDecl>(DRE->getDecl()))
+ BlockDeclRefs.push_back(DRE);
+ if (HasLocalVariableExternalStorage(DRE->getDecl()))
+ BlockDeclRefs.push_back(DRE);
+ }
+ }
+
+ return;
+}
+
+void RewriteModernObjC::GetInnerBlockDeclRefExprs(Stmt *S,
+ SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs,
+ llvm::SmallPtrSetImpl<const DeclContext *> &InnerContexts) {
+ for (Stmt::child_range CI = S->children(); CI; ++CI)
+ if (*CI) {
+ if (BlockExpr *CBE = dyn_cast<BlockExpr>(*CI)) {
+ InnerContexts.insert(cast<DeclContext>(CBE->getBlockDecl()));
+ GetInnerBlockDeclRefExprs(CBE->getBody(),
+ InnerBlockDeclRefs,
+ InnerContexts);
+ }
+ else
+ GetInnerBlockDeclRefExprs(*CI,
+ InnerBlockDeclRefs,
+ InnerContexts);
+
+ }
+ // Handle specific things.
+ if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
+ if (DRE->refersToEnclosingLocal()) {
+ if (!isa<FunctionDecl>(DRE->getDecl()) &&
+ !InnerContexts.count(DRE->getDecl()->getDeclContext()))
+ InnerBlockDeclRefs.push_back(DRE);
+ if (VarDecl *Var = dyn_cast<VarDecl>(DRE->getDecl()))
+ if (Var->isFunctionOrMethodVarDecl())
+ ImportedLocalExternalDecls.insert(Var);
+ }
+ }
+
+ return;
+}
+
+/// convertObjCTypeToCStyleType - This routine converts such objc types
+/// as qualified objects, and blocks to their closest c/c++ types that
+/// it can. It returns true if input type was modified.
+bool RewriteModernObjC::convertObjCTypeToCStyleType(QualType &T) {
+ QualType oldT = T;
+ convertBlockPointerToFunctionPointer(T);
+ if (T->isFunctionPointerType()) {
+ QualType PointeeTy;
+ if (const PointerType* PT = T->getAs<PointerType>()) {
+ PointeeTy = PT->getPointeeType();
+ if (const FunctionType *FT = PointeeTy->getAs<FunctionType>()) {
+ T = convertFunctionTypeOfBlocks(FT);
+ T = Context->getPointerType(T);
+ }
+ }
+ }
+
+ convertToUnqualifiedObjCType(T);
+ return T != oldT;
+}
+
+/// convertFunctionTypeOfBlocks - This routine converts a function type
+/// whose result type may be a block pointer or whose argument type(s)
+/// might be block pointers to an equivalent function type replacing
+/// all block pointers to function pointers.
+QualType RewriteModernObjC::convertFunctionTypeOfBlocks(const FunctionType *FT) {
+ const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT);
+ // FTP will be null for closures that don't take arguments.
+ // Generate a funky cast.
+ SmallVector<QualType, 8> ArgTypes;
+ QualType Res = FT->getReturnType();
+ bool modified = convertObjCTypeToCStyleType(Res);
+
+ if (FTP) {
+ for (auto &I : FTP->param_types()) {
+ QualType t = I;
+ // Make sure we convert "t (^)(...)" to "t (*)(...)".
+ if (convertObjCTypeToCStyleType(t))
+ modified = true;
+ ArgTypes.push_back(t);
+ }
+ }
+ QualType FuncType;
+ if (modified)
+ FuncType = getSimpleFunctionType(Res, ArgTypes);
+ else FuncType = QualType(FT, 0);
+ return FuncType;
+}
+
+Stmt *RewriteModernObjC::SynthesizeBlockCall(CallExpr *Exp, const Expr *BlockExp) {
+ // Navigate to relevant type information.
+ const BlockPointerType *CPT = nullptr;
+
+ if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(BlockExp)) {
+ CPT = DRE->getType()->getAs<BlockPointerType>();
+ } else if (const MemberExpr *MExpr = dyn_cast<MemberExpr>(BlockExp)) {
+ CPT = MExpr->getType()->getAs<BlockPointerType>();
+ }
+ else if (const ParenExpr *PRE = dyn_cast<ParenExpr>(BlockExp)) {
+ return SynthesizeBlockCall(Exp, PRE->getSubExpr());
+ }
+ else if (const ImplicitCastExpr *IEXPR = dyn_cast<ImplicitCastExpr>(BlockExp))
+ CPT = IEXPR->getType()->getAs<BlockPointerType>();
+ else if (const ConditionalOperator *CEXPR =
+ dyn_cast<ConditionalOperator>(BlockExp)) {
+ Expr *LHSExp = CEXPR->getLHS();
+ Stmt *LHSStmt = SynthesizeBlockCall(Exp, LHSExp);
+ Expr *RHSExp = CEXPR->getRHS();
+ Stmt *RHSStmt = SynthesizeBlockCall(Exp, RHSExp);
+ Expr *CONDExp = CEXPR->getCond();
+ ConditionalOperator *CondExpr =
+ new (Context) ConditionalOperator(CONDExp,
+ SourceLocation(), cast<Expr>(LHSStmt),
+ SourceLocation(), cast<Expr>(RHSStmt),
+ Exp->getType(), VK_RValue, OK_Ordinary);
+ return CondExpr;
+ } else if (const ObjCIvarRefExpr *IRE = dyn_cast<ObjCIvarRefExpr>(BlockExp)) {
+ CPT = IRE->getType()->getAs<BlockPointerType>();
+ } else if (const PseudoObjectExpr *POE
+ = dyn_cast<PseudoObjectExpr>(BlockExp)) {
+ CPT = POE->getType()->castAs<BlockPointerType>();
+ } else {
+ assert(1 && "RewriteBlockClass: Bad type");
+ }
+ assert(CPT && "RewriteBlockClass: Bad type");
+ const FunctionType *FT = CPT->getPointeeType()->getAs<FunctionType>();
+ assert(FT && "RewriteBlockClass: Bad type");
+ const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT);
+ // FTP will be null for closures that don't take arguments.
+
+ RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get("__block_impl"));
+ QualType PtrBlock = Context->getPointerType(Context->getTagDeclType(RD));
+
+ // Generate a funky cast.
+ SmallVector<QualType, 8> ArgTypes;
+
+ // Push the block argument type.
+ ArgTypes.push_back(PtrBlock);
+ if (FTP) {
+ for (auto &I : FTP->param_types()) {
+ QualType t = I;
+ // Make sure we convert "t (^)(...)" to "t (*)(...)".
+ if (!convertBlockPointerToFunctionPointer(t))
+ convertToUnqualifiedObjCType(t);
+ ArgTypes.push_back(t);
+ }
+ }
+ // Now do the pointer to function cast.
+ QualType PtrToFuncCastType = getSimpleFunctionType(Exp->getType(), ArgTypes);
+
+ PtrToFuncCastType = Context->getPointerType(PtrToFuncCastType);
+
+ CastExpr *BlkCast = NoTypeInfoCStyleCastExpr(Context, PtrBlock,
+ CK_BitCast,
+ const_cast<Expr*>(BlockExp));
+ // Don't forget the parens to enforce the proper binding.
+ ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
+ BlkCast);
+ //PE->dump();
+
+ FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
+ SourceLocation(),
+ &Context->Idents.get("FuncPtr"),
+ Context->VoidPtrTy, nullptr,
+ /*BitWidth=*/nullptr, /*Mutable=*/true,
+ ICIS_NoInit);
+ MemberExpr *ME = new (Context) MemberExpr(PE, true, FD, SourceLocation(),
+ FD->getType(), VK_LValue,
+ OK_Ordinary);
+
+
+ CastExpr *FunkCast = NoTypeInfoCStyleCastExpr(Context, PtrToFuncCastType,
+ CK_BitCast, ME);
+ PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), FunkCast);
+
+ SmallVector<Expr*, 8> BlkExprs;
+ // Add the implicit argument.
+ BlkExprs.push_back(BlkCast);
+ // Add the user arguments.
+ for (CallExpr::arg_iterator I = Exp->arg_begin(),
+ E = Exp->arg_end(); I != E; ++I) {
+ BlkExprs.push_back(*I);
+ }
+ CallExpr *CE = new (Context) CallExpr(*Context, PE, BlkExprs,
+ Exp->getType(), VK_RValue,
+ SourceLocation());
+ return CE;
+}
+
+// We need to return the rewritten expression to handle cases where the
+// DeclRefExpr is embedded in another expression being rewritten.
+// For example:
+//
+// int main() {
+// __block Foo *f;
+// __block int i;
+//
+// void (^myblock)() = ^() {
+// [f test]; // f is a DeclRefExpr embedded in a message (which is being rewritten).
+// i = 77;
+// };
+//}
+Stmt *RewriteModernObjC::RewriteBlockDeclRefExpr(DeclRefExpr *DeclRefExp) {
+ // Rewrite the byref variable into BYREFVAR->__forwarding->BYREFVAR
+ // for each DeclRefExp where BYREFVAR is name of the variable.
+ ValueDecl *VD = DeclRefExp->getDecl();
+ bool isArrow = DeclRefExp->refersToEnclosingLocal();
+
+ FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
+ SourceLocation(),
+ &Context->Idents.get("__forwarding"),
+ Context->VoidPtrTy, nullptr,
+ /*BitWidth=*/nullptr, /*Mutable=*/true,
+ ICIS_NoInit);
+ MemberExpr *ME = new (Context) MemberExpr(DeclRefExp, isArrow,
+ FD, SourceLocation(),
+ FD->getType(), VK_LValue,
+ OK_Ordinary);
+
+ StringRef Name = VD->getName();
+ FD = FieldDecl::Create(*Context, nullptr, SourceLocation(), SourceLocation(),
+ &Context->Idents.get(Name),
+ Context->VoidPtrTy, nullptr,
+ /*BitWidth=*/nullptr, /*Mutable=*/true,
+ ICIS_NoInit);
+ ME = new (Context) MemberExpr(ME, true, FD, SourceLocation(),
+ DeclRefExp->getType(), VK_LValue, OK_Ordinary);
+
+
+
+ // Need parens to enforce precedence.
+ ParenExpr *PE = new (Context) ParenExpr(DeclRefExp->getExprLoc(),
+ DeclRefExp->getExprLoc(),
+ ME);
+ ReplaceStmt(DeclRefExp, PE);
+ return PE;
+}
+
+// Rewrites the imported local variable V with external storage
+// (static, extern, etc.) as *V
+//
+Stmt *RewriteModernObjC::RewriteLocalVariableExternalStorage(DeclRefExpr *DRE) {
+ ValueDecl *VD = DRE->getDecl();
+ if (VarDecl *Var = dyn_cast<VarDecl>(VD))
+ if (!ImportedLocalExternalDecls.count(Var))
+ return DRE;
+ Expr *Exp = new (Context) UnaryOperator(DRE, UO_Deref, DRE->getType(),
+ VK_LValue, OK_Ordinary,
+ DRE->getLocation());
+ // Need parens to enforce precedence.
+ ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
+ Exp);
+ ReplaceStmt(DRE, PE);
+ return PE;
+}
+
+void RewriteModernObjC::RewriteCastExpr(CStyleCastExpr *CE) {
+ SourceLocation LocStart = CE->getLParenLoc();
+ SourceLocation LocEnd = CE->getRParenLoc();
+
+ // Need to avoid trying to rewrite synthesized casts.
+ if (LocStart.isInvalid())
+ return;
+ // Need to avoid trying to rewrite casts contained in macros.
+ if (!Rewriter::isRewritable(LocStart) || !Rewriter::isRewritable(LocEnd))
+ return;
+
+ const char *startBuf = SM->getCharacterData(LocStart);
+ const char *endBuf = SM->getCharacterData(LocEnd);
+ QualType QT = CE->getType();
+ const Type* TypePtr = QT->getAs<Type>();
+ if (isa<TypeOfExprType>(TypePtr)) {
+ const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr);
+ QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType();
+ std::string TypeAsString = "(";
+ RewriteBlockPointerType(TypeAsString, QT);
+ TypeAsString += ")";
+ ReplaceText(LocStart, endBuf-startBuf+1, TypeAsString);
+ return;
+ }
+ // advance the location to startArgList.
+ const char *argPtr = startBuf;
+
+ while (*argPtr++ && (argPtr < endBuf)) {
+ switch (*argPtr) {
+ case '^':
+ // Replace the '^' with '*'.
+ LocStart = LocStart.getLocWithOffset(argPtr-startBuf);
+ ReplaceText(LocStart, 1, "*");
+ break;
+ }
+ }
+ return;
+}
+
+void RewriteModernObjC::RewriteImplicitCastObjCExpr(CastExpr *IC) {
+ CastKind CastKind = IC->getCastKind();
+ if (CastKind != CK_BlockPointerToObjCPointerCast &&
+ CastKind != CK_AnyPointerToBlockPointerCast)
+ return;
+
+ QualType QT = IC->getType();
+ (void)convertBlockPointerToFunctionPointer(QT);
+ std::string TypeString(QT.getAsString(Context->getPrintingPolicy()));
+ std::string Str = "(";
+ Str += TypeString;
+ Str += ")";
+ InsertText(IC->getSubExpr()->getLocStart(), &Str[0], Str.size());
+
+ return;
+}
+
+void RewriteModernObjC::RewriteBlockPointerFunctionArgs(FunctionDecl *FD) {
+ SourceLocation DeclLoc = FD->getLocation();
+ unsigned parenCount = 0;
+
+ // We have 1 or more arguments that have closure pointers.
+ const char *startBuf = SM->getCharacterData(DeclLoc);
+ const char *startArgList = strchr(startBuf, '(');
+
+ assert((*startArgList == '(') && "Rewriter fuzzy parser confused");
+
+ parenCount++;
+ // advance the location to startArgList.
+ DeclLoc = DeclLoc.getLocWithOffset(startArgList-startBuf);
+ assert((DeclLoc.isValid()) && "Invalid DeclLoc");
+
+ const char *argPtr = startArgList;
+
+ while (*argPtr++ && parenCount) {
+ switch (*argPtr) {
+ case '^':
+ // Replace the '^' with '*'.
+ DeclLoc = DeclLoc.getLocWithOffset(argPtr-startArgList);
+ ReplaceText(DeclLoc, 1, "*");
+ break;
+ case '(':
+ parenCount++;
+ break;
+ case ')':
+ parenCount--;
+ break;
+ }
+ }
+ return;
+}
+
+bool RewriteModernObjC::PointerTypeTakesAnyBlockArguments(QualType QT) {
+ const FunctionProtoType *FTP;
+ const PointerType *PT = QT->getAs<PointerType>();
+ if (PT) {
+ FTP = PT->getPointeeType()->getAs<FunctionProtoType>();
+ } else {
+ const BlockPointerType *BPT = QT->getAs<BlockPointerType>();
+ assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type");
+ FTP = BPT->getPointeeType()->getAs<FunctionProtoType>();
+ }
+ if (FTP) {
+ for (const auto &I : FTP->param_types())
+ if (isTopLevelBlockPointerType(I))
+ return true;
+ }
+ return false;
+}
+
+bool RewriteModernObjC::PointerTypeTakesAnyObjCQualifiedType(QualType QT) {
+ const FunctionProtoType *FTP;
+ const PointerType *PT = QT->getAs<PointerType>();
+ if (PT) {
+ FTP = PT->getPointeeType()->getAs<FunctionProtoType>();
+ } else {
+ const BlockPointerType *BPT = QT->getAs<BlockPointerType>();
+ assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type");
+ FTP = BPT->getPointeeType()->getAs<FunctionProtoType>();
+ }
+ if (FTP) {
+ for (const auto &I : FTP->param_types()) {
+ if (I->isObjCQualifiedIdType())
+ return true;
+ if (I->isObjCObjectPointerType() &&
+ I->getPointeeType()->isObjCQualifiedInterfaceType())
+ return true;
+ }
+
+ }
+ return false;
+}
+
+void RewriteModernObjC::GetExtentOfArgList(const char *Name, const char *&LParen,
+ const char *&RParen) {
+ const char *argPtr = strchr(Name, '(');
+ assert((*argPtr == '(') && "Rewriter fuzzy parser confused");
+
+ LParen = argPtr; // output the start.
+ argPtr++; // skip past the left paren.
+ unsigned parenCount = 1;
+
+ while (*argPtr && parenCount) {
+ switch (*argPtr) {
+ case '(': parenCount++; break;
+ case ')': parenCount--; break;
+ default: break;
+ }
+ if (parenCount) argPtr++;
+ }
+ assert((*argPtr == ')') && "Rewriter fuzzy parser confused");
+ RParen = argPtr; // output the end
+}
+
+void RewriteModernObjC::RewriteBlockPointerDecl(NamedDecl *ND) {
+ if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
+ RewriteBlockPointerFunctionArgs(FD);
+ return;
+ }
+ // Handle Variables and Typedefs.
+ SourceLocation DeclLoc = ND->getLocation();
+ QualType DeclT;
+ if (VarDecl *VD = dyn_cast<VarDecl>(ND))
+ DeclT = VD->getType();
+ else if (TypedefNameDecl *TDD = dyn_cast<TypedefNameDecl>(ND))
+ DeclT = TDD->getUnderlyingType();
+ else if (FieldDecl *FD = dyn_cast<FieldDecl>(ND))
+ DeclT = FD->getType();
+ else
+ llvm_unreachable("RewriteBlockPointerDecl(): Decl type not yet handled");
+
+ const char *startBuf = SM->getCharacterData(DeclLoc);
+ const char *endBuf = startBuf;
+ // scan backward (from the decl location) for the end of the previous decl.
+ while (*startBuf != '^' && *startBuf != ';' && startBuf != MainFileStart)
+ startBuf--;
+ SourceLocation Start = DeclLoc.getLocWithOffset(startBuf-endBuf);
+ std::string buf;
+ unsigned OrigLength=0;
+ // *startBuf != '^' if we are dealing with a pointer to function that
+ // may take block argument types (which will be handled below).
+ if (*startBuf == '^') {
+ // Replace the '^' with '*', computing a negative offset.
+ buf = '*';
+ startBuf++;
+ OrigLength++;
+ }
+ while (*startBuf != ')') {
+ buf += *startBuf;
+ startBuf++;
+ OrigLength++;
+ }
+ buf += ')';
+ OrigLength++;
+
+ if (PointerTypeTakesAnyBlockArguments(DeclT) ||
+ PointerTypeTakesAnyObjCQualifiedType(DeclT)) {
+ // Replace the '^' with '*' for arguments.
+ // Replace id<P> with id/*<>*/
+ DeclLoc = ND->getLocation();
+ startBuf = SM->getCharacterData(DeclLoc);
+ const char *argListBegin, *argListEnd;
+ GetExtentOfArgList(startBuf, argListBegin, argListEnd);
+ while (argListBegin < argListEnd) {
+ if (*argListBegin == '^')
+ buf += '*';
+ else if (*argListBegin == '<') {
+ buf += "/*";
+ buf += *argListBegin++;
+ OrigLength++;
+ while (*argListBegin != '>') {
+ buf += *argListBegin++;
+ OrigLength++;
+ }
+ buf += *argListBegin;
+ buf += "*/";
+ }
+ else
+ buf += *argListBegin;
+ argListBegin++;
+ OrigLength++;
+ }
+ buf += ')';
+ OrigLength++;
+ }
+ ReplaceText(Start, OrigLength, buf);
+
+ return;
+}
+
+
+/// SynthesizeByrefCopyDestroyHelper - This routine synthesizes:
+/// void __Block_byref_id_object_copy(struct Block_byref_id_object *dst,
+/// struct Block_byref_id_object *src) {
+/// _Block_object_assign (&_dest->object, _src->object,
+/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT
+/// [|BLOCK_FIELD_IS_WEAK]) // object
+/// _Block_object_assign(&_dest->object, _src->object,
+/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK
+/// [|BLOCK_FIELD_IS_WEAK]) // block
+/// }
+/// And:
+/// void __Block_byref_id_object_dispose(struct Block_byref_id_object *_src) {
+/// _Block_object_dispose(_src->object,
+/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT
+/// [|BLOCK_FIELD_IS_WEAK]) // object
+/// _Block_object_dispose(_src->object,
+/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK
+/// [|BLOCK_FIELD_IS_WEAK]) // block
+/// }
+
+std::string RewriteModernObjC::SynthesizeByrefCopyDestroyHelper(VarDecl *VD,
+ int flag) {
+ std::string S;
+ if (CopyDestroyCache.count(flag))
+ return S;
+ CopyDestroyCache.insert(flag);
+ S = "static void __Block_byref_id_object_copy_";
+ S += utostr(flag);
+ S += "(void *dst, void *src) {\n";
+
+ // offset into the object pointer is computed as:
+ // void * + void* + int + int + void* + void *
+ unsigned IntSize =
+ static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
+ unsigned VoidPtrSize =
+ static_cast<unsigned>(Context->getTypeSize(Context->VoidPtrTy));
+
+ unsigned offset = (VoidPtrSize*4 + IntSize + IntSize)/Context->getCharWidth();
+ S += " _Block_object_assign((char*)dst + ";
+ S += utostr(offset);
+ S += ", *(void * *) ((char*)src + ";
+ S += utostr(offset);
+ S += "), ";
+ S += utostr(flag);
+ S += ");\n}\n";
+
+ S += "static void __Block_byref_id_object_dispose_";
+ S += utostr(flag);
+ S += "(void *src) {\n";
+ S += " _Block_object_dispose(*(void * *) ((char*)src + ";
+ S += utostr(offset);
+ S += "), ";
+ S += utostr(flag);
+ S += ");\n}\n";
+ return S;
+}
+
+/// RewriteByRefVar - For each __block typex ND variable this routine transforms
+/// the declaration into:
+/// struct __Block_byref_ND {
+/// void *__isa; // NULL for everything except __weak pointers
+/// struct __Block_byref_ND *__forwarding;
+/// int32_t __flags;
+/// int32_t __size;
+/// void *__Block_byref_id_object_copy; // If variable is __block ObjC object
+/// void *__Block_byref_id_object_dispose; // If variable is __block ObjC object
+/// typex ND;
+/// };
+///
+/// It then replaces declaration of ND variable with:
+/// struct __Block_byref_ND ND = {__isa=0B, __forwarding=&ND, __flags=some_flag,
+/// __size=sizeof(struct __Block_byref_ND),
+/// ND=initializer-if-any};
+///
+///
+void RewriteModernObjC::RewriteByRefVar(VarDecl *ND, bool firstDecl,
+ bool lastDecl) {
+ int flag = 0;
+ int isa = 0;
+ SourceLocation DeclLoc = ND->getTypeSpecStartLoc();
+ if (DeclLoc.isInvalid())
+ // If type location is missing, it is because of missing type (a warning).
+ // Use variable's location which is good for this case.
+ DeclLoc = ND->getLocation();
+ const char *startBuf = SM->getCharacterData(DeclLoc);
+ SourceLocation X = ND->getLocEnd();
+ X = SM->getExpansionLoc(X);
+ const char *endBuf = SM->getCharacterData(X);
+ std::string Name(ND->getNameAsString());
+ std::string ByrefType;
+ RewriteByRefString(ByrefType, Name, ND, true);
+ ByrefType += " {\n";
+ ByrefType += " void *__isa;\n";
+ RewriteByRefString(ByrefType, Name, ND);
+ ByrefType += " *__forwarding;\n";
+ ByrefType += " int __flags;\n";
+ ByrefType += " int __size;\n";
+ // Add void *__Block_byref_id_object_copy;
+ // void *__Block_byref_id_object_dispose; if needed.
+ QualType Ty = ND->getType();
+ bool HasCopyAndDispose = Context->BlockRequiresCopying(Ty, ND);
+ if (HasCopyAndDispose) {
+ ByrefType += " void (*__Block_byref_id_object_copy)(void*, void*);\n";
+ ByrefType += " void (*__Block_byref_id_object_dispose)(void*);\n";
+ }
+
+ QualType T = Ty;
+ (void)convertBlockPointerToFunctionPointer(T);
+ T.getAsStringInternal(Name, Context->getPrintingPolicy());
+
+ ByrefType += " " + Name + ";\n";
+ ByrefType += "};\n";
+ // Insert this type in global scope. It is needed by helper function.
+ SourceLocation FunLocStart;
+ if (CurFunctionDef)
+ FunLocStart = getFunctionSourceLocation(*this, CurFunctionDef);
+ else {
+ assert(CurMethodDef && "RewriteByRefVar - CurMethodDef is null");
+ FunLocStart = CurMethodDef->getLocStart();
+ }
+ InsertText(FunLocStart, ByrefType);
+
+ if (Ty.isObjCGCWeak()) {
+ flag |= BLOCK_FIELD_IS_WEAK;
+ isa = 1;
+ }
+ if (HasCopyAndDispose) {
+ flag = BLOCK_BYREF_CALLER;
+ QualType Ty = ND->getType();
+ // FIXME. Handle __weak variable (BLOCK_FIELD_IS_WEAK) as well.
+ if (Ty->isBlockPointerType())
+ flag |= BLOCK_FIELD_IS_BLOCK;
+ else
+ flag |= BLOCK_FIELD_IS_OBJECT;
+ std::string HF = SynthesizeByrefCopyDestroyHelper(ND, flag);
+ if (!HF.empty())
+ Preamble += HF;
+ }
+
+ // struct __Block_byref_ND ND =
+ // {0, &ND, some_flag, __size=sizeof(struct __Block_byref_ND),
+ // initializer-if-any};
+ bool hasInit = (ND->getInit() != nullptr);
+ // FIXME. rewriter does not support __block c++ objects which
+ // require construction.
+ if (hasInit)
+ if (CXXConstructExpr *CExp = dyn_cast<CXXConstructExpr>(ND->getInit())) {
+ CXXConstructorDecl *CXXDecl = CExp->getConstructor();
+ if (CXXDecl && CXXDecl->isDefaultConstructor())
+ hasInit = false;
+ }
+
+ unsigned flags = 0;
+ if (HasCopyAndDispose)
+ flags |= BLOCK_HAS_COPY_DISPOSE;
+ Name = ND->getNameAsString();
+ ByrefType.clear();
+ RewriteByRefString(ByrefType, Name, ND);
+ std::string ForwardingCastType("(");
+ ForwardingCastType += ByrefType + " *)";
+ ByrefType += " " + Name + " = {(void*)";
+ ByrefType += utostr(isa);
+ ByrefType += "," + ForwardingCastType + "&" + Name + ", ";
+ ByrefType += utostr(flags);
+ ByrefType += ", ";
+ ByrefType += "sizeof(";
+ RewriteByRefString(ByrefType, Name, ND);
+ ByrefType += ")";
+ if (HasCopyAndDispose) {
+ ByrefType += ", __Block_byref_id_object_copy_";
+ ByrefType += utostr(flag);
+ ByrefType += ", __Block_byref_id_object_dispose_";
+ ByrefType += utostr(flag);
+ }
+
+ if (!firstDecl) {
+ // In multiple __block declarations, and for all but 1st declaration,
+ // find location of the separating comma. This would be start location
+ // where new text is to be inserted.
+ DeclLoc = ND->getLocation();
+ const char *startDeclBuf = SM->getCharacterData(DeclLoc);
+ const char *commaBuf = startDeclBuf;
+ while (*commaBuf != ',')
+ commaBuf--;
+ assert((*commaBuf == ',') && "RewriteByRefVar: can't find ','");
+ DeclLoc = DeclLoc.getLocWithOffset(commaBuf - startDeclBuf);
+ startBuf = commaBuf;
+ }
+
+ if (!hasInit) {
+ ByrefType += "};\n";
+ unsigned nameSize = Name.size();
+ // for block or function pointer declaration. Name is aleady
+ // part of the declaration.
+ if (Ty->isBlockPointerType() || Ty->isFunctionPointerType())
+ nameSize = 1;
+ ReplaceText(DeclLoc, endBuf-startBuf+nameSize, ByrefType);
+ }
+ else {
+ ByrefType += ", ";
+ SourceLocation startLoc;
+ Expr *E = ND->getInit();
+ if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E))
+ startLoc = ECE->getLParenLoc();
+ else
+ startLoc = E->getLocStart();
+ startLoc = SM->getExpansionLoc(startLoc);
+ endBuf = SM->getCharacterData(startLoc);
+ ReplaceText(DeclLoc, endBuf-startBuf, ByrefType);
+
+ const char separator = lastDecl ? ';' : ',';
+ const char *startInitializerBuf = SM->getCharacterData(startLoc);
+ const char *separatorBuf = strchr(startInitializerBuf, separator);
+ assert((*separatorBuf == separator) &&
+ "RewriteByRefVar: can't find ';' or ','");
+ SourceLocation separatorLoc =
+ startLoc.getLocWithOffset(separatorBuf-startInitializerBuf);
+
+ InsertText(separatorLoc, lastDecl ? "}" : "};\n");
+ }
+ return;
+}
+
+void RewriteModernObjC::CollectBlockDeclRefInfo(BlockExpr *Exp) {
+ // Add initializers for any closure decl refs.
+ GetBlockDeclRefExprs(Exp->getBody());
+ if (BlockDeclRefs.size()) {
+ // Unique all "by copy" declarations.
+ for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
+ if (!BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>()) {
+ if (!BlockByCopyDeclsPtrSet.count(BlockDeclRefs[i]->getDecl())) {
+ BlockByCopyDeclsPtrSet.insert(BlockDeclRefs[i]->getDecl());
+ BlockByCopyDecls.push_back(BlockDeclRefs[i]->getDecl());
+ }
+ }
+ // Unique all "by ref" declarations.
+ for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
+ if (BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>()) {
+ if (!BlockByRefDeclsPtrSet.count(BlockDeclRefs[i]->getDecl())) {
+ BlockByRefDeclsPtrSet.insert(BlockDeclRefs[i]->getDecl());
+ BlockByRefDecls.push_back(BlockDeclRefs[i]->getDecl());
+ }
+ }
+ // Find any imported blocks...they will need special attention.
+ for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
+ if (BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>() ||
+ BlockDeclRefs[i]->getType()->isObjCObjectPointerType() ||
+ BlockDeclRefs[i]->getType()->isBlockPointerType())
+ ImportedBlockDecls.insert(BlockDeclRefs[i]->getDecl());
+ }
+}
+
+FunctionDecl *RewriteModernObjC::SynthBlockInitFunctionDecl(StringRef name) {
+ IdentifierInfo *ID = &Context->Idents.get(name);
+ QualType FType = Context->getFunctionNoProtoType(Context->VoidPtrTy);
+ return FunctionDecl::Create(*Context, TUDecl, SourceLocation(),
+ SourceLocation(), ID, FType, nullptr, SC_Extern,
+ false, false);
+}
+
+Stmt *RewriteModernObjC::SynthBlockInitExpr(BlockExpr *Exp,
+ const SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs) {
+
+ const BlockDecl *block = Exp->getBlockDecl();
+
+ Blocks.push_back(Exp);
+
+ CollectBlockDeclRefInfo(Exp);
+
+ // Add inner imported variables now used in current block.
+ int countOfInnerDecls = 0;
+ if (!InnerBlockDeclRefs.empty()) {
+ for (unsigned i = 0; i < InnerBlockDeclRefs.size(); i++) {
+ DeclRefExpr *Exp = InnerBlockDeclRefs[i];
+ ValueDecl *VD = Exp->getDecl();
+ if (!VD->hasAttr<BlocksAttr>() && !BlockByCopyDeclsPtrSet.count(VD)) {
+ // We need to save the copied-in variables in nested
+ // blocks because it is needed at the end for some of the API generations.
+ // See SynthesizeBlockLiterals routine.
+ InnerDeclRefs.push_back(Exp); countOfInnerDecls++;
+ BlockDeclRefs.push_back(Exp);
+ BlockByCopyDeclsPtrSet.insert(VD);
+ BlockByCopyDecls.push_back(VD);
+ }
+ if (VD->hasAttr<BlocksAttr>() && !BlockByRefDeclsPtrSet.count(VD)) {
+ InnerDeclRefs.push_back(Exp); countOfInnerDecls++;
+ BlockDeclRefs.push_back(Exp);
+ BlockByRefDeclsPtrSet.insert(VD);
+ BlockByRefDecls.push_back(VD);
+ }
+ }
+ // Find any imported blocks...they will need special attention.
+ for (unsigned i = 0; i < InnerBlockDeclRefs.size(); i++)
+ if (InnerBlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>() ||
+ InnerBlockDeclRefs[i]->getType()->isObjCObjectPointerType() ||
+ InnerBlockDeclRefs[i]->getType()->isBlockPointerType())
+ ImportedBlockDecls.insert(InnerBlockDeclRefs[i]->getDecl());
+ }
+ InnerDeclRefsCount.push_back(countOfInnerDecls);
+
+ std::string FuncName;
+
+ if (CurFunctionDef)
+ FuncName = CurFunctionDef->getNameAsString();
+ else if (CurMethodDef)
+ BuildUniqueMethodName(FuncName, CurMethodDef);
+ else if (GlobalVarDecl)
+ FuncName = std::string(GlobalVarDecl->getNameAsString());
+
+ bool GlobalBlockExpr =
+ block->getDeclContext()->getRedeclContext()->isFileContext();
+
+ if (GlobalBlockExpr && !GlobalVarDecl) {
+ Diags.Report(block->getLocation(), GlobalBlockRewriteFailedDiag);
+ GlobalBlockExpr = false;
+ }
+
+ std::string BlockNumber = utostr(Blocks.size()-1);
+
+ std::string Func = "__" + FuncName + "_block_func_" + BlockNumber;
+
+ // Get a pointer to the function type so we can cast appropriately.
+ QualType BFT = convertFunctionTypeOfBlocks(Exp->getFunctionType());
+ QualType FType = Context->getPointerType(BFT);
+
+ FunctionDecl *FD;
+ Expr *NewRep;
+
+ // Simulate a constructor call...
+ std::string Tag;
+
+ if (GlobalBlockExpr)
+ Tag = "__global_";
+ else
+ Tag = "__";
+ Tag += FuncName + "_block_impl_" + BlockNumber;
+
+ FD = SynthBlockInitFunctionDecl(Tag);
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(FD, false, FType, VK_RValue,
+ SourceLocation());
+
+ SmallVector<Expr*, 4> InitExprs;
+
+ // Initialize the block function.
+ FD = SynthBlockInitFunctionDecl(Func);
+ DeclRefExpr *Arg = new (Context) DeclRefExpr(FD, false, FD->getType(),
+ VK_LValue, SourceLocation());
+ CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy,
+ CK_BitCast, Arg);
+ InitExprs.push_back(castExpr);
+
+ // Initialize the block descriptor.
+ std::string DescData = "__" + FuncName + "_block_desc_" + BlockNumber + "_DATA";
+
+ VarDecl *NewVD = VarDecl::Create(*Context, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get(DescData.c_str()),
+ Context->VoidPtrTy, nullptr,
+ SC_Static);
+ UnaryOperator *DescRefExpr =
+ new (Context) UnaryOperator(new (Context) DeclRefExpr(NewVD, false,
+ Context->VoidPtrTy,
+ VK_LValue,
+ SourceLocation()),
+ UO_AddrOf,
+ Context->getPointerType(Context->VoidPtrTy),
+ VK_RValue, OK_Ordinary,
+ SourceLocation());
+ InitExprs.push_back(DescRefExpr);
+
+ // Add initializers for any closure decl refs.
+ if (BlockDeclRefs.size()) {
+ Expr *Exp;
+ // Output all "by copy" declarations.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
+ E = BlockByCopyDecls.end(); I != E; ++I) {
+ if (isObjCType((*I)->getType())) {
+ // FIXME: Conform to ABI ([[obj retain] autorelease]).
+ FD = SynthBlockInitFunctionDecl((*I)->getName());
+ Exp = new (Context) DeclRefExpr(FD, false, FD->getType(),
+ VK_LValue, SourceLocation());
+ if (HasLocalVariableExternalStorage(*I)) {
+ QualType QT = (*I)->getType();
+ QT = Context->getPointerType(QT);
+ Exp = new (Context) UnaryOperator(Exp, UO_AddrOf, QT, VK_RValue,
+ OK_Ordinary, SourceLocation());
+ }
+ } else if (isTopLevelBlockPointerType((*I)->getType())) {
+ FD = SynthBlockInitFunctionDecl((*I)->getName());
+ Arg = new (Context) DeclRefExpr(FD, false, FD->getType(),
+ VK_LValue, SourceLocation());
+ Exp = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy,
+ CK_BitCast, Arg);
+ } else {
+ FD = SynthBlockInitFunctionDecl((*I)->getName());
+ Exp = new (Context) DeclRefExpr(FD, false, FD->getType(),
+ VK_LValue, SourceLocation());
+ if (HasLocalVariableExternalStorage(*I)) {
+ QualType QT = (*I)->getType();
+ QT = Context->getPointerType(QT);
+ Exp = new (Context) UnaryOperator(Exp, UO_AddrOf, QT, VK_RValue,
+ OK_Ordinary, SourceLocation());
+ }
+
+ }
+ InitExprs.push_back(Exp);
+ }
+ // Output all "by ref" declarations.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
+ E = BlockByRefDecls.end(); I != E; ++I) {
+ ValueDecl *ND = (*I);
+ std::string Name(ND->getNameAsString());
+ std::string RecName;
+ RewriteByRefString(RecName, Name, ND, true);
+ IdentifierInfo *II = &Context->Idents.get(RecName.c_str()
+ + sizeof("struct"));
+ RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ II);
+ assert(RD && "SynthBlockInitExpr(): Can't find RecordDecl");
+ QualType castT = Context->getPointerType(Context->getTagDeclType(RD));
+
+ FD = SynthBlockInitFunctionDecl((*I)->getName());
+ Exp = new (Context) DeclRefExpr(FD, false, FD->getType(), VK_LValue,
+ SourceLocation());
+ bool isNestedCapturedVar = false;
+ if (block)
+ for (const auto &CI : block->captures()) {
+ const VarDecl *variable = CI.getVariable();
+ if (variable == ND && CI.isNested()) {
+ assert (CI.isByRef() &&
+ "SynthBlockInitExpr - captured block variable is not byref");
+ isNestedCapturedVar = true;
+ break;
+ }
+ }
+ // captured nested byref variable has its address passed. Do not take
+ // its address again.
+ if (!isNestedCapturedVar)
+ Exp = new (Context) UnaryOperator(Exp, UO_AddrOf,
+ Context->getPointerType(Exp->getType()),
+ VK_RValue, OK_Ordinary, SourceLocation());
+ Exp = NoTypeInfoCStyleCastExpr(Context, castT, CK_BitCast, Exp);
+ InitExprs.push_back(Exp);
+ }
+ }
+ if (ImportedBlockDecls.size()) {
+ // generate BLOCK_HAS_COPY_DISPOSE(have helper funcs) | BLOCK_HAS_DESCRIPTOR
+ int flag = (BLOCK_HAS_COPY_DISPOSE | BLOCK_HAS_DESCRIPTOR);
+ unsigned IntSize =
+ static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
+ Expr *FlagExp = IntegerLiteral::Create(*Context, llvm::APInt(IntSize, flag),
+ Context->IntTy, SourceLocation());
+ InitExprs.push_back(FlagExp);
+ }
+ NewRep = new (Context) CallExpr(*Context, DRE, InitExprs,
+ FType, VK_LValue, SourceLocation());
+
+ if (GlobalBlockExpr) {
+ assert (!GlobalConstructionExp &&
+ "SynthBlockInitExpr - GlobalConstructionExp must be null");
+ GlobalConstructionExp = NewRep;
+ NewRep = DRE;
+ }
+
+ NewRep = new (Context) UnaryOperator(NewRep, UO_AddrOf,
+ Context->getPointerType(NewRep->getType()),
+ VK_RValue, OK_Ordinary, SourceLocation());
+ NewRep = NoTypeInfoCStyleCastExpr(Context, FType, CK_BitCast,
+ NewRep);
+ // Put Paren around the call.
+ NewRep = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
+ NewRep);
+
+ BlockDeclRefs.clear();
+ BlockByRefDecls.clear();
+ BlockByRefDeclsPtrSet.clear();
+ BlockByCopyDecls.clear();
+ BlockByCopyDeclsPtrSet.clear();
+ ImportedBlockDecls.clear();
+ return NewRep;
+}
+
+bool RewriteModernObjC::IsDeclStmtInForeachHeader(DeclStmt *DS) {
+ if (const ObjCForCollectionStmt * CS =
+ dyn_cast<ObjCForCollectionStmt>(Stmts.back()))
+ return CS->getElement() == DS;
+ return false;
+}
+
+//===----------------------------------------------------------------------===//
+// Function Body / Expression rewriting
+//===----------------------------------------------------------------------===//
+
+Stmt *RewriteModernObjC::RewriteFunctionBodyOrGlobalInitializer(Stmt *S) {
+ if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
+ isa<DoStmt>(S) || isa<ForStmt>(S))
+ Stmts.push_back(S);
+ else if (isa<ObjCForCollectionStmt>(S)) {
+ Stmts.push_back(S);
+ ObjCBcLabelNo.push_back(++BcLabelCount);
+ }
+
+ // Pseudo-object operations and ivar references need special
+ // treatment because we're going to recursively rewrite them.
+ if (PseudoObjectExpr *PseudoOp = dyn_cast<PseudoObjectExpr>(S)) {
+ if (isa<BinaryOperator>(PseudoOp->getSyntacticForm())) {
+ return RewritePropertyOrImplicitSetter(PseudoOp);
+ } else {
+ return RewritePropertyOrImplicitGetter(PseudoOp);
+ }
+ } else if (ObjCIvarRefExpr *IvarRefExpr = dyn_cast<ObjCIvarRefExpr>(S)) {
+ return RewriteObjCIvarRefExpr(IvarRefExpr);
+ }
+ else if (isa<OpaqueValueExpr>(S))
+ S = cast<OpaqueValueExpr>(S)->getSourceExpr();
+
+ SourceRange OrigStmtRange = S->getSourceRange();
+
+ // Perform a bottom up rewrite of all children.
+ for (Stmt::child_range CI = S->children(); CI; ++CI)
+ if (*CI) {
+ Stmt *childStmt = (*CI);
+ Stmt *newStmt = RewriteFunctionBodyOrGlobalInitializer(childStmt);
+ if (newStmt) {
+ *CI = newStmt;
+ }
+ }
+
+ if (BlockExpr *BE = dyn_cast<BlockExpr>(S)) {
+ SmallVector<DeclRefExpr *, 8> InnerBlockDeclRefs;
+ llvm::SmallPtrSet<const DeclContext *, 8> InnerContexts;
+ InnerContexts.insert(BE->getBlockDecl());
+ ImportedLocalExternalDecls.clear();
+ GetInnerBlockDeclRefExprs(BE->getBody(),
+ InnerBlockDeclRefs, InnerContexts);
+ // Rewrite the block body in place.
+ Stmt *SaveCurrentBody = CurrentBody;
+ CurrentBody = BE->getBody();
+ PropParentMap = nullptr;
+ // block literal on rhs of a property-dot-sytax assignment
+ // must be replaced by its synthesize ast so getRewrittenText
+ // works as expected. In this case, what actually ends up on RHS
+ // is the blockTranscribed which is the helper function for the
+ // block literal; as in: self.c = ^() {[ace ARR];};
+ bool saveDisableReplaceStmt = DisableReplaceStmt;
+ DisableReplaceStmt = false;
+ RewriteFunctionBodyOrGlobalInitializer(BE->getBody());
+ DisableReplaceStmt = saveDisableReplaceStmt;
+ CurrentBody = SaveCurrentBody;
+ PropParentMap = nullptr;
+ ImportedLocalExternalDecls.clear();
+ // Now we snarf the rewritten text and stash it away for later use.
+ std::string Str = Rewrite.getRewrittenText(BE->getSourceRange());
+ RewrittenBlockExprs[BE] = Str;
+
+ Stmt *blockTranscribed = SynthBlockInitExpr(BE, InnerBlockDeclRefs);
+
+ //blockTranscribed->dump();
+ ReplaceStmt(S, blockTranscribed);
+ return blockTranscribed;
+ }
+ // Handle specific things.
+ if (ObjCEncodeExpr *AtEncode = dyn_cast<ObjCEncodeExpr>(S))
+ return RewriteAtEncode(AtEncode);
+
+ if (ObjCSelectorExpr *AtSelector = dyn_cast<ObjCSelectorExpr>(S))
+ return RewriteAtSelector(AtSelector);
+
+ if (ObjCStringLiteral *AtString = dyn_cast<ObjCStringLiteral>(S))
+ return RewriteObjCStringLiteral(AtString);
+
+ if (ObjCBoolLiteralExpr *BoolLitExpr = dyn_cast<ObjCBoolLiteralExpr>(S))
+ return RewriteObjCBoolLiteralExpr(BoolLitExpr);
+
+ if (ObjCBoxedExpr *BoxedExpr = dyn_cast<ObjCBoxedExpr>(S))
+ return RewriteObjCBoxedExpr(BoxedExpr);
+
+ if (ObjCArrayLiteral *ArrayLitExpr = dyn_cast<ObjCArrayLiteral>(S))
+ return RewriteObjCArrayLiteralExpr(ArrayLitExpr);
+
+ if (ObjCDictionaryLiteral *DictionaryLitExpr =
+ dyn_cast<ObjCDictionaryLiteral>(S))
+ return RewriteObjCDictionaryLiteralExpr(DictionaryLitExpr);
+
+ if (ObjCMessageExpr *MessExpr = dyn_cast<ObjCMessageExpr>(S)) {
+#if 0
+ // Before we rewrite it, put the original message expression in a comment.
+ SourceLocation startLoc = MessExpr->getLocStart();
+ SourceLocation endLoc = MessExpr->getLocEnd();
+
+ const char *startBuf = SM->getCharacterData(startLoc);
+ const char *endBuf = SM->getCharacterData(endLoc);
+
+ std::string messString;
+ messString += "// ";
+ messString.append(startBuf, endBuf-startBuf+1);
+ messString += "\n";
+
+ // FIXME: Missing definition of
+ // InsertText(clang::SourceLocation, char const*, unsigned int).
+ // InsertText(startLoc, messString.c_str(), messString.size());
+ // Tried this, but it didn't work either...
+ // ReplaceText(startLoc, 0, messString.c_str(), messString.size());
+#endif
+ return RewriteMessageExpr(MessExpr);
+ }
+
+ if (ObjCAutoreleasePoolStmt *StmtAutoRelease =
+ dyn_cast<ObjCAutoreleasePoolStmt>(S)) {
+ return RewriteObjCAutoreleasePoolStmt(StmtAutoRelease);
+ }
+
+ if (ObjCAtTryStmt *StmtTry = dyn_cast<ObjCAtTryStmt>(S))
+ return RewriteObjCTryStmt(StmtTry);
+
+ if (ObjCAtSynchronizedStmt *StmtTry = dyn_cast<ObjCAtSynchronizedStmt>(S))
+ return RewriteObjCSynchronizedStmt(StmtTry);
+
+ if (ObjCAtThrowStmt *StmtThrow = dyn_cast<ObjCAtThrowStmt>(S))
+ return RewriteObjCThrowStmt(StmtThrow);
+
+ if (ObjCProtocolExpr *ProtocolExp = dyn_cast<ObjCProtocolExpr>(S))
+ return RewriteObjCProtocolExpr(ProtocolExp);
+
+ if (ObjCForCollectionStmt *StmtForCollection =
+ dyn_cast<ObjCForCollectionStmt>(S))
+ return RewriteObjCForCollectionStmt(StmtForCollection,
+ OrigStmtRange.getEnd());
+ if (BreakStmt *StmtBreakStmt =
+ dyn_cast<BreakStmt>(S))
+ return RewriteBreakStmt(StmtBreakStmt);
+ if (ContinueStmt *StmtContinueStmt =
+ dyn_cast<ContinueStmt>(S))
+ return RewriteContinueStmt(StmtContinueStmt);
+
+ // Need to check for protocol refs (id <P>, Foo <P> *) in variable decls
+ // and cast exprs.
+ if (DeclStmt *DS = dyn_cast<DeclStmt>(S)) {
+ // FIXME: What we're doing here is modifying the type-specifier that
+ // precedes the first Decl. In the future the DeclGroup should have
+ // a separate type-specifier that we can rewrite.
+ // NOTE: We need to avoid rewriting the DeclStmt if it is within
+ // the context of an ObjCForCollectionStmt. For example:
+ // NSArray *someArray;
+ // for (id <FooProtocol> index in someArray) ;
+ // This is because RewriteObjCForCollectionStmt() does textual rewriting
+ // and it depends on the original text locations/positions.
+ if (Stmts.empty() || !IsDeclStmtInForeachHeader(DS))
+ RewriteObjCQualifiedInterfaceTypes(*DS->decl_begin());
+
+ // Blocks rewrite rules.
+ for (DeclStmt::decl_iterator DI = DS->decl_begin(), DE = DS->decl_end();
+ DI != DE; ++DI) {
+ Decl *SD = *DI;
+ if (ValueDecl *ND = dyn_cast<ValueDecl>(SD)) {
+ if (isTopLevelBlockPointerType(ND->getType()))
+ RewriteBlockPointerDecl(ND);
+ else if (ND->getType()->isFunctionPointerType())
+ CheckFunctionPointerDecl(ND->getType(), ND);
+ if (VarDecl *VD = dyn_cast<VarDecl>(SD)) {
+ if (VD->hasAttr<BlocksAttr>()) {
+ static unsigned uniqueByrefDeclCount = 0;
+ assert(!BlockByRefDeclNo.count(ND) &&
+ "RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl");
+ BlockByRefDeclNo[ND] = uniqueByrefDeclCount++;
+ RewriteByRefVar(VD, (DI == DS->decl_begin()), ((DI+1) == DE));
+ }
+ else
+ RewriteTypeOfDecl(VD);
+ }
+ }
+ if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(SD)) {
+ if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
+ RewriteBlockPointerDecl(TD);
+ else if (TD->getUnderlyingType()->isFunctionPointerType())
+ CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
+ }
+ }
+ }
+
+ if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S))
+ RewriteObjCQualifiedInterfaceTypes(CE);
+
+ if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
+ isa<DoStmt>(S) || isa<ForStmt>(S)) {
+ assert(!Stmts.empty() && "Statement stack is empty");
+ assert ((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) ||
+ isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back()))
+ && "Statement stack mismatch");
+ Stmts.pop_back();
+ }
+ // Handle blocks rewriting.
+ if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
+ ValueDecl *VD = DRE->getDecl();
+ if (VD->hasAttr<BlocksAttr>())
+ return RewriteBlockDeclRefExpr(DRE);
+ if (HasLocalVariableExternalStorage(VD))
+ return RewriteLocalVariableExternalStorage(DRE);
+ }
+
+ if (CallExpr *CE = dyn_cast<CallExpr>(S)) {
+ if (CE->getCallee()->getType()->isBlockPointerType()) {
+ Stmt *BlockCall = SynthesizeBlockCall(CE, CE->getCallee());
+ ReplaceStmt(S, BlockCall);
+ return BlockCall;
+ }
+ }
+ if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S)) {
+ RewriteCastExpr(CE);
+ }
+ if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(S)) {
+ RewriteImplicitCastObjCExpr(ICE);
+ }
+#if 0
+
+ if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(S)) {
+ CastExpr *Replacement = new (Context) CastExpr(ICE->getType(),
+ ICE->getSubExpr(),
+ SourceLocation());
+ // Get the new text.
+ std::string SStr;
+ llvm::raw_string_ostream Buf(SStr);
+ Replacement->printPretty(Buf);
+ const std::string &Str = Buf.str();
+
+ printf("CAST = %s\n", &Str[0]);
+ InsertText(ICE->getSubExpr()->getLocStart(), &Str[0], Str.size());
+ delete S;
+ return Replacement;
+ }
+#endif
+ // Return this stmt unmodified.
+ return S;
+}
+
+void RewriteModernObjC::RewriteRecordBody(RecordDecl *RD) {
+ for (auto *FD : RD->fields()) {
+ if (isTopLevelBlockPointerType(FD->getType()))
+ RewriteBlockPointerDecl(FD);
+ if (FD->getType()->isObjCQualifiedIdType() ||
+ FD->getType()->isObjCQualifiedInterfaceType())
+ RewriteObjCQualifiedInterfaceTypes(FD);
+ }
+}
+
+/// HandleDeclInMainFile - This is called for each top-level decl defined in the
+/// main file of the input.
+void RewriteModernObjC::HandleDeclInMainFile(Decl *D) {
+ switch (D->getKind()) {
+ case Decl::Function: {
+ FunctionDecl *FD = cast<FunctionDecl>(D);
+ if (FD->isOverloadedOperator())
+ return;
+
+ // Since function prototypes don't have ParmDecl's, we check the function
+ // prototype. This enables us to rewrite function declarations and
+ // definitions using the same code.
+ RewriteBlocksInFunctionProtoType(FD->getType(), FD);
+
+ if (!FD->isThisDeclarationADefinition())
+ break;
+
+ // FIXME: If this should support Obj-C++, support CXXTryStmt
+ if (CompoundStmt *Body = dyn_cast_or_null<CompoundStmt>(FD->getBody())) {
+ CurFunctionDef = FD;
+ CurrentBody = Body;
+ Body =
+ cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body));
+ FD->setBody(Body);
+ CurrentBody = nullptr;
+ if (PropParentMap) {
+ delete PropParentMap;
+ PropParentMap = nullptr;
+ }
+ // This synthesizes and inserts the block "impl" struct, invoke function,
+ // and any copy/dispose helper functions.
+ InsertBlockLiteralsWithinFunction(FD);
+ RewriteLineDirective(D);
+ CurFunctionDef = nullptr;
+ }
+ break;
+ }
+ case Decl::ObjCMethod: {
+ ObjCMethodDecl *MD = cast<ObjCMethodDecl>(D);
+ if (CompoundStmt *Body = MD->getCompoundBody()) {
+ CurMethodDef = MD;
+ CurrentBody = Body;
+ Body =
+ cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body));
+ MD->setBody(Body);
+ CurrentBody = nullptr;
+ if (PropParentMap) {
+ delete PropParentMap;
+ PropParentMap = nullptr;
+ }
+ InsertBlockLiteralsWithinMethod(MD);
+ RewriteLineDirective(D);
+ CurMethodDef = nullptr;
+ }
+ break;
+ }
+ case Decl::ObjCImplementation: {
+ ObjCImplementationDecl *CI = cast<ObjCImplementationDecl>(D);
+ ClassImplementation.push_back(CI);
+ break;
+ }
+ case Decl::ObjCCategoryImpl: {
+ ObjCCategoryImplDecl *CI = cast<ObjCCategoryImplDecl>(D);
+ CategoryImplementation.push_back(CI);
+ break;
+ }
+ case Decl::Var: {
+ VarDecl *VD = cast<VarDecl>(D);
+ RewriteObjCQualifiedInterfaceTypes(VD);
+ if (isTopLevelBlockPointerType(VD->getType()))
+ RewriteBlockPointerDecl(VD);
+ else if (VD->getType()->isFunctionPointerType()) {
+ CheckFunctionPointerDecl(VD->getType(), VD);
+ if (VD->getInit()) {
+ if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
+ RewriteCastExpr(CE);
+ }
+ }
+ } else if (VD->getType()->isRecordType()) {
+ RecordDecl *RD = VD->getType()->getAs<RecordType>()->getDecl();
+ if (RD->isCompleteDefinition())
+ RewriteRecordBody(RD);
+ }
+ if (VD->getInit()) {
+ GlobalVarDecl = VD;
+ CurrentBody = VD->getInit();
+ RewriteFunctionBodyOrGlobalInitializer(VD->getInit());
+ CurrentBody = nullptr;
+ if (PropParentMap) {
+ delete PropParentMap;
+ PropParentMap = nullptr;
+ }
+ SynthesizeBlockLiterals(VD->getTypeSpecStartLoc(), VD->getName());
+ GlobalVarDecl = nullptr;
+
+ // This is needed for blocks.
+ if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
+ RewriteCastExpr(CE);
+ }
+ }
+ break;
+ }
+ case Decl::TypeAlias:
+ case Decl::Typedef: {
+ if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D)) {
+ if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
+ RewriteBlockPointerDecl(TD);
+ else if (TD->getUnderlyingType()->isFunctionPointerType())
+ CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
+ else
+ RewriteObjCQualifiedInterfaceTypes(TD);
+ }
+ break;
+ }
+ case Decl::CXXRecord:
+ case Decl::Record: {
+ RecordDecl *RD = cast<RecordDecl>(D);
+ if (RD->isCompleteDefinition())
+ RewriteRecordBody(RD);
+ break;
+ }
+ default:
+ break;
+ }
+ // Nothing yet.
+}
+
+/// Write_ProtocolExprReferencedMetadata - This routine writer out the
+/// protocol reference symbols in the for of:
+/// struct _protocol_t *PROTOCOL_REF = &PROTOCOL_METADATA.
+static void Write_ProtocolExprReferencedMetadata(ASTContext *Context,
+ ObjCProtocolDecl *PDecl,
+ std::string &Result) {
+ // Also output .objc_protorefs$B section and its meta-data.
+ if (Context->getLangOpts().MicrosoftExt)
+ Result += "static ";
+ Result += "struct _protocol_t *";
+ Result += "_OBJC_PROTOCOL_REFERENCE_$_";
+ Result += PDecl->getNameAsString();
+ Result += " = &";
+ Result += "_OBJC_PROTOCOL_"; Result += PDecl->getNameAsString();
+ Result += ";\n";
+}
+
+void RewriteModernObjC::HandleTranslationUnit(ASTContext &C) {
+ if (Diags.hasErrorOccurred())
+ return;
+
+ RewriteInclude();
+
+ for (unsigned i = 0, e = FunctionDefinitionsSeen.size(); i < e; i++) {
+ // translation of function bodies were postponed until all class and
+ // their extensions and implementations are seen. This is because, we
+ // cannot build grouping structs for bitfields until they are all seen.
+ FunctionDecl *FDecl = FunctionDefinitionsSeen[i];
+ HandleTopLevelSingleDecl(FDecl);
+ }
+
+ // Here's a great place to add any extra declarations that may be needed.
+ // Write out meta data for each @protocol(<expr>).
+ for (ObjCProtocolDecl *ProtDecl : ProtocolExprDecls) {
+ RewriteObjCProtocolMetaData(ProtDecl, Preamble);
+ Write_ProtocolExprReferencedMetadata(Context, ProtDecl, Preamble);
+ }
+
+ InsertText(SM->getLocForStartOfFile(MainFileID), Preamble, false);
+
+ if (ClassImplementation.size() || CategoryImplementation.size())
+ RewriteImplementations();
+
+ for (unsigned i = 0, e = ObjCInterfacesSeen.size(); i < e; i++) {
+ ObjCInterfaceDecl *CDecl = ObjCInterfacesSeen[i];
+ // Write struct declaration for the class matching its ivar declarations.
+ // Note that for modern abi, this is postponed until the end of TU
+ // because class extensions and the implementation might declare their own
+ // private ivars.
+ RewriteInterfaceDecl(CDecl);
+ }
+
+ // Get the buffer corresponding to MainFileID. If we haven't changed it, then
+ // we are done.
+ if (const RewriteBuffer *RewriteBuf =
+ Rewrite.getRewriteBufferFor(MainFileID)) {
+ //printf("Changed:\n");
+ *OutFile << std::string(RewriteBuf->begin(), RewriteBuf->end());
+ } else {
+ llvm::errs() << "No changes\n";
+ }
+
+ if (ClassImplementation.size() || CategoryImplementation.size() ||
+ ProtocolExprDecls.size()) {
+ // Rewrite Objective-c meta data*
+ std::string ResultStr;
+ RewriteMetaDataIntoBuffer(ResultStr);
+ // Emit metadata.
+ *OutFile << ResultStr;
+ }
+ // Emit ImageInfo;
+ {
+ std::string ResultStr;
+ WriteImageInfo(ResultStr);
+ *OutFile << ResultStr;
+ }
+ OutFile->flush();
+}
+
+void RewriteModernObjC::Initialize(ASTContext &context) {
+ InitializeCommon(context);
+
+ Preamble += "#ifndef __OBJC2__\n";
+ Preamble += "#define __OBJC2__\n";
+ Preamble += "#endif\n";
+
+ // declaring objc_selector outside the parameter list removes a silly
+ // scope related warning...
+ if (IsHeader)
+ Preamble = "#pragma once\n";
+ Preamble += "struct objc_selector; struct objc_class;\n";
+ Preamble += "struct __rw_objc_super { \n\tstruct objc_object *object; ";
+ Preamble += "\n\tstruct objc_object *superClass; ";
+ // Add a constructor for creating temporary objects.
+ Preamble += "\n\t__rw_objc_super(struct objc_object *o, struct objc_object *s) ";
+ Preamble += ": object(o), superClass(s) {} ";
+ Preamble += "\n};\n";
+
+ if (LangOpts.MicrosoftExt) {
+ // Define all sections using syntax that makes sense.
+ // These are currently generated.
+ Preamble += "\n#pragma section(\".objc_classlist$B\", long, read, write)\n";
+ Preamble += "#pragma section(\".objc_catlist$B\", long, read, write)\n";
+ Preamble += "#pragma section(\".objc_imageinfo$B\", long, read, write)\n";
+ Preamble += "#pragma section(\".objc_nlclslist$B\", long, read, write)\n";
+ Preamble += "#pragma section(\".objc_nlcatlist$B\", long, read, write)\n";
+ // These are generated but not necessary for functionality.
+ Preamble += "#pragma section(\".cat_cls_meth$B\", long, read, write)\n";
+ Preamble += "#pragma section(\".inst_meth$B\", long, read, write)\n";
+ Preamble += "#pragma section(\".cls_meth$B\", long, read, write)\n";
+ Preamble += "#pragma section(\".objc_ivar$B\", long, read, write)\n";
+
+ // These need be generated for performance. Currently they are not,
+ // using API calls instead.
+ Preamble += "#pragma section(\".objc_selrefs$B\", long, read, write)\n";
+ Preamble += "#pragma section(\".objc_classrefs$B\", long, read, write)\n";
+ Preamble += "#pragma section(\".objc_superrefs$B\", long, read, write)\n";
+
+ }
+ Preamble += "#ifndef _REWRITER_typedef_Protocol\n";
+ Preamble += "typedef struct objc_object Protocol;\n";
+ Preamble += "#define _REWRITER_typedef_Protocol\n";
+ Preamble += "#endif\n";
+ if (LangOpts.MicrosoftExt) {
+ Preamble += "#define __OBJC_RW_DLLIMPORT extern \"C\" __declspec(dllimport)\n";
+ Preamble += "#define __OBJC_RW_STATICIMPORT extern \"C\"\n";
+ }
+ else
+ Preamble += "#define __OBJC_RW_DLLIMPORT extern\n";
+
+ Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSend(void);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSendSuper(void);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSend_stret(void);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSendSuper_stret(void);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void objc_msgSend_fpret(void);\n";
+
+ Preamble += "__OBJC_RW_DLLIMPORT struct objc_class *objc_getClass";
+ Preamble += "(const char *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT struct objc_class *class_getSuperclass";
+ Preamble += "(struct objc_class *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT struct objc_class *objc_getMetaClass";
+ Preamble += "(const char *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_throw( struct objc_object *);\n";
+ // @synchronized hooks.
+ Preamble += "__OBJC_RW_DLLIMPORT int objc_sync_enter( struct objc_object *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT int objc_sync_exit( struct objc_object *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT Protocol *objc_getProtocol(const char *);\n";
+ Preamble += "#ifdef _WIN64\n";
+ Preamble += "typedef unsigned long long _WIN_NSUInteger;\n";
+ Preamble += "#else\n";
+ Preamble += "typedef unsigned int _WIN_NSUInteger;\n";
+ Preamble += "#endif\n";
+ Preamble += "#ifndef __FASTENUMERATIONSTATE\n";
+ Preamble += "struct __objcFastEnumerationState {\n\t";
+ Preamble += "unsigned long state;\n\t";
+ Preamble += "void **itemsPtr;\n\t";
+ Preamble += "unsigned long *mutationsPtr;\n\t";
+ Preamble += "unsigned long extra[5];\n};\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void objc_enumerationMutation(struct objc_object *);\n";
+ Preamble += "#define __FASTENUMERATIONSTATE\n";
+ Preamble += "#endif\n";
+ Preamble += "#ifndef __NSCONSTANTSTRINGIMPL\n";
+ Preamble += "struct __NSConstantStringImpl {\n";
+ Preamble += " int *isa;\n";
+ Preamble += " int flags;\n";
+ Preamble += " char *str;\n";
+ Preamble += "#if _WIN64\n";
+ Preamble += " long long length;\n";
+ Preamble += "#else\n";
+ Preamble += " long length;\n";
+ Preamble += "#endif\n";
+ Preamble += "};\n";
+ Preamble += "#ifdef CF_EXPORT_CONSTANT_STRING\n";
+ Preamble += "extern \"C\" __declspec(dllexport) int __CFConstantStringClassReference[];\n";
+ Preamble += "#else\n";
+ Preamble += "__OBJC_RW_DLLIMPORT int __CFConstantStringClassReference[];\n";
+ Preamble += "#endif\n";
+ Preamble += "#define __NSCONSTANTSTRINGIMPL\n";
+ Preamble += "#endif\n";
+ // Blocks preamble.
+ Preamble += "#ifndef BLOCK_IMPL\n";
+ Preamble += "#define BLOCK_IMPL\n";
+ Preamble += "struct __block_impl {\n";
+ Preamble += " void *isa;\n";
+ Preamble += " int Flags;\n";
+ Preamble += " int Reserved;\n";
+ Preamble += " void *FuncPtr;\n";
+ Preamble += "};\n";
+ Preamble += "// Runtime copy/destroy helper functions (from Block_private.h)\n";
+ Preamble += "#ifdef __OBJC_EXPORT_BLOCKS\n";
+ Preamble += "extern \"C\" __declspec(dllexport) "
+ "void _Block_object_assign(void *, const void *, const int);\n";
+ Preamble += "extern \"C\" __declspec(dllexport) void _Block_object_dispose(const void *, const int);\n";
+ Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteGlobalBlock[32];\n";
+ Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteStackBlock[32];\n";
+ Preamble += "#else\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_assign(void *, const void *, const int);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_dispose(const void *, const int);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteGlobalBlock[32];\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteStackBlock[32];\n";
+ Preamble += "#endif\n";
+ Preamble += "#endif\n";
+ if (LangOpts.MicrosoftExt) {
+ Preamble += "#undef __OBJC_RW_DLLIMPORT\n";
+ Preamble += "#undef __OBJC_RW_STATICIMPORT\n";
+ Preamble += "#ifndef KEEP_ATTRIBUTES\n"; // We use this for clang tests.
+ Preamble += "#define __attribute__(X)\n";
+ Preamble += "#endif\n";
+ Preamble += "#ifndef __weak\n";
+ Preamble += "#define __weak\n";
+ Preamble += "#endif\n";
+ Preamble += "#ifndef __block\n";
+ Preamble += "#define __block\n";
+ Preamble += "#endif\n";
+ }
+ else {
+ Preamble += "#define __block\n";
+ Preamble += "#define __weak\n";
+ }
+
+ // Declarations required for modern objective-c array and dictionary literals.
+ Preamble += "\n#include <stdarg.h>\n";
+ Preamble += "struct __NSContainer_literal {\n";
+ Preamble += " void * *arr;\n";
+ Preamble += " __NSContainer_literal (unsigned int count, ...) {\n";
+ Preamble += "\tva_list marker;\n";
+ Preamble += "\tva_start(marker, count);\n";
+ Preamble += "\tarr = new void *[count];\n";
+ Preamble += "\tfor (unsigned i = 0; i < count; i++)\n";
+ Preamble += "\t arr[i] = va_arg(marker, void *);\n";
+ Preamble += "\tva_end( marker );\n";
+ Preamble += " };\n";
+ Preamble += " ~__NSContainer_literal() {\n";
+ Preamble += "\tdelete[] arr;\n";
+ Preamble += " }\n";
+ Preamble += "};\n";
+
+ // Declaration required for implementation of @autoreleasepool statement.
+ Preamble += "extern \"C\" __declspec(dllimport) void * objc_autoreleasePoolPush(void);\n";
+ Preamble += "extern \"C\" __declspec(dllimport) void objc_autoreleasePoolPop(void *);\n\n";
+ Preamble += "struct __AtAutoreleasePool {\n";
+ Preamble += " __AtAutoreleasePool() {atautoreleasepoolobj = objc_autoreleasePoolPush();}\n";
+ Preamble += " ~__AtAutoreleasePool() {objc_autoreleasePoolPop(atautoreleasepoolobj);}\n";
+ Preamble += " void * atautoreleasepoolobj;\n";
+ Preamble += "};\n";
+
+ // NOTE! Windows uses LLP64 for 64bit mode. So, cast pointer to long long
+ // as this avoids warning in any 64bit/32bit compilation model.
+ Preamble += "\n#define __OFFSETOFIVAR__(TYPE, MEMBER) ((long long) &((TYPE *)0)->MEMBER)\n";
+}
+
+/// RewriteIvarOffsetComputation - This rutine synthesizes computation of
+/// ivar offset.
+void RewriteModernObjC::RewriteIvarOffsetComputation(ObjCIvarDecl *ivar,
+ std::string &Result) {
+ Result += "__OFFSETOFIVAR__(struct ";
+ Result += ivar->getContainingInterface()->getNameAsString();
+ if (LangOpts.MicrosoftExt)
+ Result += "_IMPL";
+ Result += ", ";
+ if (ivar->isBitField())
+ ObjCIvarBitfieldGroupDecl(ivar, Result);
+ else
+ Result += ivar->getNameAsString();
+ Result += ")";
+}
+
+/// WriteModernMetadataDeclarations - Writes out metadata declarations for modern ABI.
+/// struct _prop_t {
+/// const char *name;
+/// char *attributes;
+/// }
+
+/// struct _prop_list_t {
+/// uint32_t entsize; // sizeof(struct _prop_t)
+/// uint32_t count_of_properties;
+/// struct _prop_t prop_list[count_of_properties];
+/// }
+
+/// struct _protocol_t;
+
+/// struct _protocol_list_t {
+/// long protocol_count; // Note, this is 32/64 bit
+/// struct _protocol_t * protocol_list[protocol_count];
+/// }
+
+/// struct _objc_method {
+/// SEL _cmd;
+/// const char *method_type;
+/// char *_imp;
+/// }
+
+/// struct _method_list_t {
+/// uint32_t entsize; // sizeof(struct _objc_method)
+/// uint32_t method_count;
+/// struct _objc_method method_list[method_count];
+/// }
+
+/// struct _protocol_t {
+/// id isa; // NULL
+/// const char *protocol_name;
+/// const struct _protocol_list_t * protocol_list; // super protocols
+/// const struct method_list_t *instance_methods;
+/// const struct method_list_t *class_methods;
+/// const struct method_list_t *optionalInstanceMethods;
+/// const struct method_list_t *optionalClassMethods;
+/// const struct _prop_list_t * properties;
+/// const uint32_t size; // sizeof(struct _protocol_t)
+/// const uint32_t flags; // = 0
+/// const char ** extendedMethodTypes;
+/// }
+
+/// struct _ivar_t {
+/// unsigned long int *offset; // pointer to ivar offset location
+/// const char *name;
+/// const char *type;
+/// uint32_t alignment;
+/// uint32_t size;
+/// }
+
+/// struct _ivar_list_t {
+/// uint32 entsize; // sizeof(struct _ivar_t)
+/// uint32 count;
+/// struct _ivar_t list[count];
+/// }
+
+/// struct _class_ro_t {
+/// uint32_t flags;
+/// uint32_t instanceStart;
+/// uint32_t instanceSize;
+/// uint32_t reserved; // only when building for 64bit targets
+/// const uint8_t *ivarLayout;
+/// const char *name;
+/// const struct _method_list_t *baseMethods;
+/// const struct _protocol_list_t *baseProtocols;
+/// const struct _ivar_list_t *ivars;
+/// const uint8_t *weakIvarLayout;
+/// const struct _prop_list_t *properties;
+/// }
+
+/// struct _class_t {
+/// struct _class_t *isa;
+/// struct _class_t *superclass;
+/// void *cache;
+/// IMP *vtable;
+/// struct _class_ro_t *ro;
+/// }
+
+/// struct _category_t {
+/// const char *name;
+/// struct _class_t *cls;
+/// const struct _method_list_t *instance_methods;
+/// const struct _method_list_t *class_methods;
+/// const struct _protocol_list_t *protocols;
+/// const struct _prop_list_t *properties;
+/// }
+
+/// MessageRefTy - LLVM for:
+/// struct _message_ref_t {
+/// IMP messenger;
+/// SEL name;
+/// };
+
+/// SuperMessageRefTy - LLVM for:
+/// struct _super_message_ref_t {
+/// SUPER_IMP messenger;
+/// SEL name;
+/// };
+
+static void WriteModernMetadataDeclarations(ASTContext *Context, std::string &Result) {
+ static bool meta_data_declared = false;
+ if (meta_data_declared)
+ return;
+
+ Result += "\nstruct _prop_t {\n";
+ Result += "\tconst char *name;\n";
+ Result += "\tconst char *attributes;\n";
+ Result += "};\n";
+
+ Result += "\nstruct _protocol_t;\n";
+
+ Result += "\nstruct _objc_method {\n";
+ Result += "\tstruct objc_selector * _cmd;\n";
+ Result += "\tconst char *method_type;\n";
+ Result += "\tvoid *_imp;\n";
+ Result += "};\n";
+
+ Result += "\nstruct _protocol_t {\n";
+ Result += "\tvoid * isa; // NULL\n";
+ Result += "\tconst char *protocol_name;\n";
+ Result += "\tconst struct _protocol_list_t * protocol_list; // super protocols\n";
+ Result += "\tconst struct method_list_t *instance_methods;\n";
+ Result += "\tconst struct method_list_t *class_methods;\n";
+ Result += "\tconst struct method_list_t *optionalInstanceMethods;\n";
+ Result += "\tconst struct method_list_t *optionalClassMethods;\n";
+ Result += "\tconst struct _prop_list_t * properties;\n";
+ Result += "\tconst unsigned int size; // sizeof(struct _protocol_t)\n";
+ Result += "\tconst unsigned int flags; // = 0\n";
+ Result += "\tconst char ** extendedMethodTypes;\n";
+ Result += "};\n";
+
+ Result += "\nstruct _ivar_t {\n";
+ Result += "\tunsigned long int *offset; // pointer to ivar offset location\n";
+ Result += "\tconst char *name;\n";
+ Result += "\tconst char *type;\n";
+ Result += "\tunsigned int alignment;\n";
+ Result += "\tunsigned int size;\n";
+ Result += "};\n";
+
+ Result += "\nstruct _class_ro_t {\n";
+ Result += "\tunsigned int flags;\n";
+ Result += "\tunsigned int instanceStart;\n";
+ Result += "\tunsigned int instanceSize;\n";
+ const llvm::Triple &Triple(Context->getTargetInfo().getTriple());
+ if (Triple.getArch() == llvm::Triple::x86_64)
+ Result += "\tunsigned int reserved;\n";
+ Result += "\tconst unsigned char *ivarLayout;\n";
+ Result += "\tconst char *name;\n";
+ Result += "\tconst struct _method_list_t *baseMethods;\n";
+ Result += "\tconst struct _objc_protocol_list *baseProtocols;\n";
+ Result += "\tconst struct _ivar_list_t *ivars;\n";
+ Result += "\tconst unsigned char *weakIvarLayout;\n";
+ Result += "\tconst struct _prop_list_t *properties;\n";
+ Result += "};\n";
+
+ Result += "\nstruct _class_t {\n";
+ Result += "\tstruct _class_t *isa;\n";
+ Result += "\tstruct _class_t *superclass;\n";
+ Result += "\tvoid *cache;\n";
+ Result += "\tvoid *vtable;\n";
+ Result += "\tstruct _class_ro_t *ro;\n";
+ Result += "};\n";
+
+ Result += "\nstruct _category_t {\n";
+ Result += "\tconst char *name;\n";
+ Result += "\tstruct _class_t *cls;\n";
+ Result += "\tconst struct _method_list_t *instance_methods;\n";
+ Result += "\tconst struct _method_list_t *class_methods;\n";
+ Result += "\tconst struct _protocol_list_t *protocols;\n";
+ Result += "\tconst struct _prop_list_t *properties;\n";
+ Result += "};\n";
+
+ Result += "extern \"C\" __declspec(dllimport) struct objc_cache _objc_empty_cache;\n";
+ Result += "#pragma warning(disable:4273)\n";
+ meta_data_declared = true;
+}
+
+static void Write_protocol_list_t_TypeDecl(std::string &Result,
+ long super_protocol_count) {
+ Result += "struct /*_protocol_list_t*/"; Result += " {\n";
+ Result += "\tlong protocol_count; // Note, this is 32/64 bit\n";
+ Result += "\tstruct _protocol_t *super_protocols[";
+ Result += utostr(super_protocol_count); Result += "];\n";
+ Result += "}";
+}
+
+static void Write_method_list_t_TypeDecl(std::string &Result,
+ unsigned int method_count) {
+ Result += "struct /*_method_list_t*/"; Result += " {\n";
+ Result += "\tunsigned int entsize; // sizeof(struct _objc_method)\n";
+ Result += "\tunsigned int method_count;\n";
+ Result += "\tstruct _objc_method method_list[";
+ Result += utostr(method_count); Result += "];\n";
+ Result += "}";
+}
+
+static void Write__prop_list_t_TypeDecl(std::string &Result,
+ unsigned int property_count) {
+ Result += "struct /*_prop_list_t*/"; Result += " {\n";
+ Result += "\tunsigned int entsize; // sizeof(struct _prop_t)\n";
+ Result += "\tunsigned int count_of_properties;\n";
+ Result += "\tstruct _prop_t prop_list[";
+ Result += utostr(property_count); Result += "];\n";
+ Result += "}";
+}
+
+static void Write__ivar_list_t_TypeDecl(std::string &Result,
+ unsigned int ivar_count) {
+ Result += "struct /*_ivar_list_t*/"; Result += " {\n";
+ Result += "\tunsigned int entsize; // sizeof(struct _prop_t)\n";
+ Result += "\tunsigned int count;\n";
+ Result += "\tstruct _ivar_t ivar_list[";
+ Result += utostr(ivar_count); Result += "];\n";
+ Result += "}";
+}
+
+static void Write_protocol_list_initializer(ASTContext *Context, std::string &Result,
+ ArrayRef<ObjCProtocolDecl *> SuperProtocols,
+ StringRef VarName,
+ StringRef ProtocolName) {
+ if (SuperProtocols.size() > 0) {
+ Result += "\nstatic ";
+ Write_protocol_list_t_TypeDecl(Result, SuperProtocols.size());
+ Result += " "; Result += VarName;
+ Result += ProtocolName;
+ Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
+ Result += "\t"; Result += utostr(SuperProtocols.size()); Result += ",\n";
+ for (unsigned i = 0, e = SuperProtocols.size(); i < e; i++) {
+ ObjCProtocolDecl *SuperPD = SuperProtocols[i];
+ Result += "\t&"; Result += "_OBJC_PROTOCOL_";
+ Result += SuperPD->getNameAsString();
+ if (i == e-1)
+ Result += "\n};\n";
+ else
+ Result += ",\n";
+ }
+ }
+}
+
+static void Write_method_list_t_initializer(RewriteModernObjC &RewriteObj,
+ ASTContext *Context, std::string &Result,
+ ArrayRef<ObjCMethodDecl *> Methods,
+ StringRef VarName,
+ StringRef TopLevelDeclName,
+ bool MethodImpl) {
+ if (Methods.size() > 0) {
+ Result += "\nstatic ";
+ Write_method_list_t_TypeDecl(Result, Methods.size());
+ Result += " "; Result += VarName;
+ Result += TopLevelDeclName;
+ Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
+ Result += "\t"; Result += "sizeof(_objc_method)"; Result += ",\n";
+ Result += "\t"; Result += utostr(Methods.size()); Result += ",\n";
+ for (unsigned i = 0, e = Methods.size(); i < e; i++) {
+ ObjCMethodDecl *MD = Methods[i];
+ if (i == 0)
+ Result += "\t{{(struct objc_selector *)\"";
+ else
+ Result += "\t{(struct objc_selector *)\"";
+ Result += (MD)->getSelector().getAsString(); Result += "\"";
+ Result += ", ";
+ std::string MethodTypeString;
+ Context->getObjCEncodingForMethodDecl(MD, MethodTypeString);
+ Result += "\""; Result += MethodTypeString; Result += "\"";
+ Result += ", ";
+ if (!MethodImpl)
+ Result += "0";
+ else {
+ Result += "(void *)";
+ Result += RewriteObj.MethodInternalNames[MD];
+ }
+ if (i == e-1)
+ Result += "}}\n";
+ else
+ Result += "},\n";
+ }
+ Result += "};\n";
+ }
+}
+
+static void Write_prop_list_t_initializer(RewriteModernObjC &RewriteObj,
+ ASTContext *Context, std::string &Result,
+ ArrayRef<ObjCPropertyDecl *> Properties,
+ const Decl *Container,
+ StringRef VarName,
+ StringRef ProtocolName) {
+ if (Properties.size() > 0) {
+ Result += "\nstatic ";
+ Write__prop_list_t_TypeDecl(Result, Properties.size());
+ Result += " "; Result += VarName;
+ Result += ProtocolName;
+ Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
+ Result += "\t"; Result += "sizeof(_prop_t)"; Result += ",\n";
+ Result += "\t"; Result += utostr(Properties.size()); Result += ",\n";
+ for (unsigned i = 0, e = Properties.size(); i < e; i++) {
+ ObjCPropertyDecl *PropDecl = Properties[i];
+ if (i == 0)
+ Result += "\t{{\"";
+ else
+ Result += "\t{\"";
+ Result += PropDecl->getName(); Result += "\",";
+ std::string PropertyTypeString, QuotePropertyTypeString;
+ Context->getObjCEncodingForPropertyDecl(PropDecl, Container, PropertyTypeString);
+ RewriteObj.QuoteDoublequotes(PropertyTypeString, QuotePropertyTypeString);
+ Result += "\""; Result += QuotePropertyTypeString; Result += "\"";
+ if (i == e-1)
+ Result += "}}\n";
+ else
+ Result += "},\n";
+ }
+ Result += "};\n";
+ }
+}
+
+// Metadata flags
+enum MetaDataDlags {
+ CLS = 0x0,
+ CLS_META = 0x1,
+ CLS_ROOT = 0x2,
+ OBJC2_CLS_HIDDEN = 0x10,
+ CLS_EXCEPTION = 0x20,
+
+ /// (Obsolete) ARC-specific: this class has a .release_ivars method
+ CLS_HAS_IVAR_RELEASER = 0x40,
+ /// class was compiled with -fobjc-arr
+ CLS_COMPILED_BY_ARC = 0x80 // (1<<7)
+};
+
+static void Write__class_ro_t_initializer(ASTContext *Context, std::string &Result,
+ unsigned int flags,
+ const std::string &InstanceStart,
+ const std::string &InstanceSize,
+ ArrayRef<ObjCMethodDecl *>baseMethods,
+ ArrayRef<ObjCProtocolDecl *>baseProtocols,
+ ArrayRef<ObjCIvarDecl *>ivars,
+ ArrayRef<ObjCPropertyDecl *>Properties,
+ StringRef VarName,
+ StringRef ClassName) {
+ Result += "\nstatic struct _class_ro_t ";
+ Result += VarName; Result += ClassName;
+ Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
+ Result += "\t";
+ Result += llvm::utostr(flags); Result += ", ";
+ Result += InstanceStart; Result += ", ";
+ Result += InstanceSize; Result += ", \n";
+ Result += "\t";
+ const llvm::Triple &Triple(Context->getTargetInfo().getTriple());
+ if (Triple.getArch() == llvm::Triple::x86_64)
+ // uint32_t const reserved; // only when building for 64bit targets
+ Result += "(unsigned int)0, \n\t";
+ // const uint8_t * const ivarLayout;
+ Result += "0, \n\t";
+ Result += "\""; Result += ClassName; Result += "\",\n\t";
+ bool metaclass = ((flags & CLS_META) != 0);
+ if (baseMethods.size() > 0) {
+ Result += "(const struct _method_list_t *)&";
+ if (metaclass)
+ Result += "_OBJC_$_CLASS_METHODS_";
+ else
+ Result += "_OBJC_$_INSTANCE_METHODS_";
+ Result += ClassName;
+ Result += ",\n\t";
+ }
+ else
+ Result += "0, \n\t";
+
+ if (!metaclass && baseProtocols.size() > 0) {
+ Result += "(const struct _objc_protocol_list *)&";
+ Result += "_OBJC_CLASS_PROTOCOLS_$_"; Result += ClassName;
+ Result += ",\n\t";
+ }
+ else
+ Result += "0, \n\t";
+
+ if (!metaclass && ivars.size() > 0) {
+ Result += "(const struct _ivar_list_t *)&";
+ Result += "_OBJC_$_INSTANCE_VARIABLES_"; Result += ClassName;
+ Result += ",\n\t";
+ }
+ else
+ Result += "0, \n\t";
+
+ // weakIvarLayout
+ Result += "0, \n\t";
+ if (!metaclass && Properties.size() > 0) {
+ Result += "(const struct _prop_list_t *)&";
+ Result += "_OBJC_$_PROP_LIST_"; Result += ClassName;
+ Result += ",\n";
+ }
+ else
+ Result += "0, \n";
+
+ Result += "};\n";
+}
+
+static void Write_class_t(ASTContext *Context, std::string &Result,
+ StringRef VarName,
+ const ObjCInterfaceDecl *CDecl, bool metaclass) {
+ bool rootClass = (!CDecl->getSuperClass());
+ const ObjCInterfaceDecl *RootClass = CDecl;
+
+ if (!rootClass) {
+ // Find the Root class
+ RootClass = CDecl->getSuperClass();
+ while (RootClass->getSuperClass()) {
+ RootClass = RootClass->getSuperClass();
+ }
+ }
+
+ if (metaclass && rootClass) {
+ // Need to handle a case of use of forward declaration.
+ Result += "\n";
+ Result += "extern \"C\" ";
+ if (CDecl->getImplementation())
+ Result += "__declspec(dllexport) ";
+ else
+ Result += "__declspec(dllimport) ";
+
+ Result += "struct _class_t OBJC_CLASS_$_";
+ Result += CDecl->getNameAsString();
+ Result += ";\n";
+ }
+ // Also, for possibility of 'super' metadata class not having been defined yet.
+ if (!rootClass) {
+ ObjCInterfaceDecl *SuperClass = CDecl->getSuperClass();
+ Result += "\n";
+ Result += "extern \"C\" ";
+ if (SuperClass->getImplementation())
+ Result += "__declspec(dllexport) ";
+ else
+ Result += "__declspec(dllimport) ";
+
+ Result += "struct _class_t ";
+ Result += VarName;
+ Result += SuperClass->getNameAsString();
+ Result += ";\n";
+
+ if (metaclass && RootClass != SuperClass) {
+ Result += "extern \"C\" ";
+ if (RootClass->getImplementation())
+ Result += "__declspec(dllexport) ";
+ else
+ Result += "__declspec(dllimport) ";
+
+ Result += "struct _class_t ";
+ Result += VarName;
+ Result += RootClass->getNameAsString();
+ Result += ";\n";
+ }
+ }
+
+ Result += "\nextern \"C\" __declspec(dllexport) struct _class_t ";
+ Result += VarName; Result += CDecl->getNameAsString();
+ Result += " __attribute__ ((used, section (\"__DATA,__objc_data\"))) = {\n";
+ Result += "\t";
+ if (metaclass) {
+ if (!rootClass) {
+ Result += "0, // &"; Result += VarName;
+ Result += RootClass->getNameAsString();
+ Result += ",\n\t";
+ Result += "0, // &"; Result += VarName;
+ Result += CDecl->getSuperClass()->getNameAsString();
+ Result += ",\n\t";
+ }
+ else {
+ Result += "0, // &"; Result += VarName;
+ Result += CDecl->getNameAsString();
+ Result += ",\n\t";
+ Result += "0, // &OBJC_CLASS_$_"; Result += CDecl->getNameAsString();
+ Result += ",\n\t";
+ }
+ }
+ else {
+ Result += "0, // &OBJC_METACLASS_$_";
+ Result += CDecl->getNameAsString();
+ Result += ",\n\t";
+ if (!rootClass) {
+ Result += "0, // &"; Result += VarName;
+ Result += CDecl->getSuperClass()->getNameAsString();
+ Result += ",\n\t";
+ }
+ else
+ Result += "0,\n\t";
+ }
+ Result += "0, // (void *)&_objc_empty_cache,\n\t";
+ Result += "0, // unused, was (void *)&_objc_empty_vtable,\n\t";
+ if (metaclass)
+ Result += "&_OBJC_METACLASS_RO_$_";
+ else
+ Result += "&_OBJC_CLASS_RO_$_";
+ Result += CDecl->getNameAsString();
+ Result += ",\n};\n";
+
+ // Add static function to initialize some of the meta-data fields.
+ // avoid doing it twice.
+ if (metaclass)
+ return;
+
+ const ObjCInterfaceDecl *SuperClass =
+ rootClass ? CDecl : CDecl->getSuperClass();
+
+ Result += "static void OBJC_CLASS_SETUP_$_";
+ Result += CDecl->getNameAsString();
+ Result += "(void ) {\n";
+ Result += "\tOBJC_METACLASS_$_"; Result += CDecl->getNameAsString();
+ Result += ".isa = "; Result += "&OBJC_METACLASS_$_";
+ Result += RootClass->getNameAsString(); Result += ";\n";
+
+ Result += "\tOBJC_METACLASS_$_"; Result += CDecl->getNameAsString();
+ Result += ".superclass = ";
+ if (rootClass)
+ Result += "&OBJC_CLASS_$_";
+ else
+ Result += "&OBJC_METACLASS_$_";
+
+ Result += SuperClass->getNameAsString(); Result += ";\n";
+
+ Result += "\tOBJC_METACLASS_$_"; Result += CDecl->getNameAsString();
+ Result += ".cache = "; Result += "&_objc_empty_cache"; Result += ";\n";
+
+ Result += "\tOBJC_CLASS_$_"; Result += CDecl->getNameAsString();
+ Result += ".isa = "; Result += "&OBJC_METACLASS_$_";
+ Result += CDecl->getNameAsString(); Result += ";\n";
+
+ if (!rootClass) {
+ Result += "\tOBJC_CLASS_$_"; Result += CDecl->getNameAsString();
+ Result += ".superclass = "; Result += "&OBJC_CLASS_$_";
+ Result += SuperClass->getNameAsString(); Result += ";\n";
+ }
+
+ Result += "\tOBJC_CLASS_$_"; Result += CDecl->getNameAsString();
+ Result += ".cache = "; Result += "&_objc_empty_cache"; Result += ";\n";
+ Result += "}\n";
+}
+
+static void Write_category_t(RewriteModernObjC &RewriteObj, ASTContext *Context,
+ std::string &Result,
+ ObjCCategoryDecl *CatDecl,
+ ObjCInterfaceDecl *ClassDecl,
+ ArrayRef<ObjCMethodDecl *> InstanceMethods,
+ ArrayRef<ObjCMethodDecl *> ClassMethods,
+ ArrayRef<ObjCProtocolDecl *> RefedProtocols,
+ ArrayRef<ObjCPropertyDecl *> ClassProperties) {
+ StringRef CatName = CatDecl->getName();
+ StringRef ClassName = ClassDecl->getName();
+ // must declare an extern class object in case this class is not implemented
+ // in this TU.
+ Result += "\n";
+ Result += "extern \"C\" ";
+ if (ClassDecl->getImplementation())
+ Result += "__declspec(dllexport) ";
+ else
+ Result += "__declspec(dllimport) ";
+
+ Result += "struct _class_t ";
+ Result += "OBJC_CLASS_$_"; Result += ClassName;
+ Result += ";\n";
+
+ Result += "\nstatic struct _category_t ";
+ Result += "_OBJC_$_CATEGORY_";
+ Result += ClassName; Result += "_$_"; Result += CatName;
+ Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = \n";
+ Result += "{\n";
+ Result += "\t\""; Result += ClassName; Result += "\",\n";
+ Result += "\t0, // &"; Result += "OBJC_CLASS_$_"; Result += ClassName;
+ Result += ",\n";
+ if (InstanceMethods.size() > 0) {
+ Result += "\t(const struct _method_list_t *)&";
+ Result += "_OBJC_$_CATEGORY_INSTANCE_METHODS_";
+ Result += ClassName; Result += "_$_"; Result += CatName;
+ Result += ",\n";
+ }
+ else
+ Result += "\t0,\n";
+
+ if (ClassMethods.size() > 0) {
+ Result += "\t(const struct _method_list_t *)&";
+ Result += "_OBJC_$_CATEGORY_CLASS_METHODS_";
+ Result += ClassName; Result += "_$_"; Result += CatName;
+ Result += ",\n";
+ }
+ else
+ Result += "\t0,\n";
+
+ if (RefedProtocols.size() > 0) {
+ Result += "\t(const struct _protocol_list_t *)&";
+ Result += "_OBJC_CATEGORY_PROTOCOLS_$_";
+ Result += ClassName; Result += "_$_"; Result += CatName;
+ Result += ",\n";
+ }
+ else
+ Result += "\t0,\n";
+
+ if (ClassProperties.size() > 0) {
+ Result += "\t(const struct _prop_list_t *)&"; Result += "_OBJC_$_PROP_LIST_";
+ Result += ClassName; Result += "_$_"; Result += CatName;
+ Result += ",\n";
+ }
+ else
+ Result += "\t0,\n";
+
+ Result += "};\n";
+
+ // Add static function to initialize the class pointer in the category structure.
+ Result += "static void OBJC_CATEGORY_SETUP_$_";
+ Result += ClassDecl->getNameAsString();
+ Result += "_$_";
+ Result += CatName;
+ Result += "(void ) {\n";
+ Result += "\t_OBJC_$_CATEGORY_";
+ Result += ClassDecl->getNameAsString();
+ Result += "_$_";
+ Result += CatName;
+ Result += ".cls = "; Result += "&OBJC_CLASS_$_"; Result += ClassName;
+ Result += ";\n}\n";
+}
+
+static void Write__extendedMethodTypes_initializer(RewriteModernObjC &RewriteObj,
+ ASTContext *Context, std::string &Result,
+ ArrayRef<ObjCMethodDecl *> Methods,
+ StringRef VarName,
+ StringRef ProtocolName) {
+ if (Methods.size() == 0)
+ return;
+
+ Result += "\nstatic const char *";
+ Result += VarName; Result += ProtocolName;
+ Result += " [] __attribute__ ((used, section (\"__DATA,__objc_const\"))) = \n";
+ Result += "{\n";
+ for (unsigned i = 0, e = Methods.size(); i < e; i++) {
+ ObjCMethodDecl *MD = Methods[i];
+ std::string MethodTypeString, QuoteMethodTypeString;
+ Context->getObjCEncodingForMethodDecl(MD, MethodTypeString, true);
+ RewriteObj.QuoteDoublequotes(MethodTypeString, QuoteMethodTypeString);
+ Result += "\t\""; Result += QuoteMethodTypeString; Result += "\"";
+ if (i == e-1)
+ Result += "\n};\n";
+ else {
+ Result += ",\n";
+ }
+ }
+}
+
+static void Write_IvarOffsetVar(RewriteModernObjC &RewriteObj,
+ ASTContext *Context,
+ std::string &Result,
+ ArrayRef<ObjCIvarDecl *> Ivars,
+ ObjCInterfaceDecl *CDecl) {
+ // FIXME. visibilty of offset symbols may have to be set; for Darwin
+ // this is what happens:
+ /**
+ if (Ivar->getAccessControl() == ObjCIvarDecl::Private ||
+ Ivar->getAccessControl() == ObjCIvarDecl::Package ||
+ Class->getVisibility() == HiddenVisibility)
+ Visibility shoud be: HiddenVisibility;
+ else
+ Visibility shoud be: DefaultVisibility;
+ */
+
+ Result += "\n";
+ for (unsigned i =0, e = Ivars.size(); i < e; i++) {
+ ObjCIvarDecl *IvarDecl = Ivars[i];
+ if (Context->getLangOpts().MicrosoftExt)
+ Result += "__declspec(allocate(\".objc_ivar$B\")) ";
+
+ if (!Context->getLangOpts().MicrosoftExt ||
+ IvarDecl->getAccessControl() == ObjCIvarDecl::Private ||
+ IvarDecl->getAccessControl() == ObjCIvarDecl::Package)
+ Result += "extern \"C\" unsigned long int ";
+ else
+ Result += "extern \"C\" __declspec(dllexport) unsigned long int ";
+ if (Ivars[i]->isBitField())
+ RewriteObj.ObjCIvarBitfieldGroupOffset(IvarDecl, Result);
+ else
+ WriteInternalIvarName(CDecl, IvarDecl, Result);
+ Result += " __attribute__ ((used, section (\"__DATA,__objc_ivar\")))";
+ Result += " = ";
+ RewriteObj.RewriteIvarOffsetComputation(IvarDecl, Result);
+ Result += ";\n";
+ if (Ivars[i]->isBitField()) {
+ // skip over rest of the ivar bitfields.
+ SKIP_BITFIELDS(i , e, Ivars);
+ }
+ }
+}
+
+static void Write__ivar_list_t_initializer(RewriteModernObjC &RewriteObj,
+ ASTContext *Context, std::string &Result,
+ ArrayRef<ObjCIvarDecl *> OriginalIvars,
+ StringRef VarName,
+ ObjCInterfaceDecl *CDecl) {
+ if (OriginalIvars.size() > 0) {
+ Write_IvarOffsetVar(RewriteObj, Context, Result, OriginalIvars, CDecl);
+ SmallVector<ObjCIvarDecl *, 8> Ivars;
+ // strip off all but the first ivar bitfield from each group of ivars.
+ // Such ivars in the ivar list table will be replaced by their grouping struct
+ // 'ivar'.
+ for (unsigned i = 0, e = OriginalIvars.size(); i < e; i++) {
+ if (OriginalIvars[i]->isBitField()) {
+ Ivars.push_back(OriginalIvars[i]);
+ // skip over rest of the ivar bitfields.
+ SKIP_BITFIELDS(i , e, OriginalIvars);
+ }
+ else
+ Ivars.push_back(OriginalIvars[i]);
+ }
+
+ Result += "\nstatic ";
+ Write__ivar_list_t_TypeDecl(Result, Ivars.size());
+ Result += " "; Result += VarName;
+ Result += CDecl->getNameAsString();
+ Result += " __attribute__ ((used, section (\"__DATA,__objc_const\"))) = {\n";
+ Result += "\t"; Result += "sizeof(_ivar_t)"; Result += ",\n";
+ Result += "\t"; Result += utostr(Ivars.size()); Result += ",\n";
+ for (unsigned i =0, e = Ivars.size(); i < e; i++) {
+ ObjCIvarDecl *IvarDecl = Ivars[i];
+ if (i == 0)
+ Result += "\t{{";
+ else
+ Result += "\t {";
+ Result += "(unsigned long int *)&";
+ if (Ivars[i]->isBitField())
+ RewriteObj.ObjCIvarBitfieldGroupOffset(IvarDecl, Result);
+ else
+ WriteInternalIvarName(CDecl, IvarDecl, Result);
+ Result += ", ";
+
+ Result += "\"";
+ if (Ivars[i]->isBitField())
+ RewriteObj.ObjCIvarBitfieldGroupDecl(Ivars[i], Result);
+ else
+ Result += IvarDecl->getName();
+ Result += "\", ";
+
+ QualType IVQT = IvarDecl->getType();
+ if (IvarDecl->isBitField())
+ IVQT = RewriteObj.GetGroupRecordTypeForObjCIvarBitfield(IvarDecl);
+
+ std::string IvarTypeString, QuoteIvarTypeString;
+ Context->getObjCEncodingForType(IVQT, IvarTypeString,
+ IvarDecl);
+ RewriteObj.QuoteDoublequotes(IvarTypeString, QuoteIvarTypeString);
+ Result += "\""; Result += QuoteIvarTypeString; Result += "\", ";
+
+ // FIXME. this alignment represents the host alignment and need be changed to
+ // represent the target alignment.
+ unsigned Align = Context->getTypeAlign(IVQT)/8;
+ Align = llvm::Log2_32(Align);
+ Result += llvm::utostr(Align); Result += ", ";
+ CharUnits Size = Context->getTypeSizeInChars(IVQT);
+ Result += llvm::utostr(Size.getQuantity());
+ if (i == e-1)
+ Result += "}}\n";
+ else
+ Result += "},\n";
+ }
+ Result += "};\n";
+ }
+}
+
+/// RewriteObjCProtocolMetaData - Rewrite protocols meta-data.
+void RewriteModernObjC::RewriteObjCProtocolMetaData(ObjCProtocolDecl *PDecl,
+ std::string &Result) {
+
+ // Do not synthesize the protocol more than once.
+ if (ObjCSynthesizedProtocols.count(PDecl->getCanonicalDecl()))
+ return;
+ WriteModernMetadataDeclarations(Context, Result);
+
+ if (ObjCProtocolDecl *Def = PDecl->getDefinition())
+ PDecl = Def;
+ // Must write out all protocol definitions in current qualifier list,
+ // and in their nested qualifiers before writing out current definition.
+ for (auto *I : PDecl->protocols())
+ RewriteObjCProtocolMetaData(I, Result);
+
+ // Construct method lists.
+ std::vector<ObjCMethodDecl *> InstanceMethods, ClassMethods;
+ std::vector<ObjCMethodDecl *> OptInstanceMethods, OptClassMethods;
+ for (auto *MD : PDecl->instance_methods()) {
+ if (MD->getImplementationControl() == ObjCMethodDecl::Optional) {
+ OptInstanceMethods.push_back(MD);
+ } else {
+ InstanceMethods.push_back(MD);
+ }
+ }
+
+ for (auto *MD : PDecl->class_methods()) {
+ if (MD->getImplementationControl() == ObjCMethodDecl::Optional) {
+ OptClassMethods.push_back(MD);
+ } else {
+ ClassMethods.push_back(MD);
+ }
+ }
+ std::vector<ObjCMethodDecl *> AllMethods;
+ for (unsigned i = 0, e = InstanceMethods.size(); i < e; i++)
+ AllMethods.push_back(InstanceMethods[i]);
+ for (unsigned i = 0, e = ClassMethods.size(); i < e; i++)
+ AllMethods.push_back(ClassMethods[i]);
+ for (unsigned i = 0, e = OptInstanceMethods.size(); i < e; i++)
+ AllMethods.push_back(OptInstanceMethods[i]);
+ for (unsigned i = 0, e = OptClassMethods.size(); i < e; i++)
+ AllMethods.push_back(OptClassMethods[i]);
+
+ Write__extendedMethodTypes_initializer(*this, Context, Result,
+ AllMethods,
+ "_OBJC_PROTOCOL_METHOD_TYPES_",
+ PDecl->getNameAsString());
+ // Protocol's super protocol list
+ SmallVector<ObjCProtocolDecl *, 8> SuperProtocols(PDecl->protocols());
+ Write_protocol_list_initializer(Context, Result, SuperProtocols,
+ "_OBJC_PROTOCOL_REFS_",
+ PDecl->getNameAsString());
+
+ Write_method_list_t_initializer(*this, Context, Result, InstanceMethods,
+ "_OBJC_PROTOCOL_INSTANCE_METHODS_",
+ PDecl->getNameAsString(), false);
+
+ Write_method_list_t_initializer(*this, Context, Result, ClassMethods,
+ "_OBJC_PROTOCOL_CLASS_METHODS_",
+ PDecl->getNameAsString(), false);
+
+ Write_method_list_t_initializer(*this, Context, Result, OptInstanceMethods,
+ "_OBJC_PROTOCOL_OPT_INSTANCE_METHODS_",
+ PDecl->getNameAsString(), false);
+
+ Write_method_list_t_initializer(*this, Context, Result, OptClassMethods,
+ "_OBJC_PROTOCOL_OPT_CLASS_METHODS_",
+ PDecl->getNameAsString(), false);
+
+ // Protocol's property metadata.
+ SmallVector<ObjCPropertyDecl *, 8> ProtocolProperties(PDecl->properties());
+ Write_prop_list_t_initializer(*this, Context, Result, ProtocolProperties,
+ /* Container */nullptr,
+ "_OBJC_PROTOCOL_PROPERTIES_",
+ PDecl->getNameAsString());
+
+ // Writer out root metadata for current protocol: struct _protocol_t
+ Result += "\n";
+ if (LangOpts.MicrosoftExt)
+ Result += "static ";
+ Result += "struct _protocol_t _OBJC_PROTOCOL_";
+ Result += PDecl->getNameAsString();
+ Result += " __attribute__ ((used, section (\"__DATA,__datacoal_nt,coalesced\"))) = {\n";
+ Result += "\t0,\n"; // id is; is null
+ Result += "\t\""; Result += PDecl->getNameAsString(); Result += "\",\n";
+ if (SuperProtocols.size() > 0) {
+ Result += "\t(const struct _protocol_list_t *)&"; Result += "_OBJC_PROTOCOL_REFS_";
+ Result += PDecl->getNameAsString(); Result += ",\n";
+ }
+ else
+ Result += "\t0,\n";
+ if (InstanceMethods.size() > 0) {
+ Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_INSTANCE_METHODS_";
+ Result += PDecl->getNameAsString(); Result += ",\n";
+ }
+ else
+ Result += "\t0,\n";
+
+ if (ClassMethods.size() > 0) {
+ Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_CLASS_METHODS_";
+ Result += PDecl->getNameAsString(); Result += ",\n";
+ }
+ else
+ Result += "\t0,\n";
+
+ if (OptInstanceMethods.size() > 0) {
+ Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_OPT_INSTANCE_METHODS_";
+ Result += PDecl->getNameAsString(); Result += ",\n";
+ }
+ else
+ Result += "\t0,\n";
+
+ if (OptClassMethods.size() > 0) {
+ Result += "\t(const struct method_list_t *)&_OBJC_PROTOCOL_OPT_CLASS_METHODS_";
+ Result += PDecl->getNameAsString(); Result += ",\n";
+ }
+ else
+ Result += "\t0,\n";
+
+ if (ProtocolProperties.size() > 0) {
+ Result += "\t(const struct _prop_list_t *)&_OBJC_PROTOCOL_PROPERTIES_";
+ Result += PDecl->getNameAsString(); Result += ",\n";
+ }
+ else
+ Result += "\t0,\n";
+
+ Result += "\t"; Result += "sizeof(_protocol_t)"; Result += ",\n";
+ Result += "\t0,\n";
+
+ if (AllMethods.size() > 0) {
+ Result += "\t(const char **)&"; Result += "_OBJC_PROTOCOL_METHOD_TYPES_";
+ Result += PDecl->getNameAsString();
+ Result += "\n};\n";
+ }
+ else
+ Result += "\t0\n};\n";
+
+ if (LangOpts.MicrosoftExt)
+ Result += "static ";
+ Result += "struct _protocol_t *";
+ Result += "_OBJC_LABEL_PROTOCOL_$_"; Result += PDecl->getNameAsString();
+ Result += " = &_OBJC_PROTOCOL_"; Result += PDecl->getNameAsString();
+ Result += ";\n";
+
+ // Mark this protocol as having been generated.
+ if (!ObjCSynthesizedProtocols.insert(PDecl->getCanonicalDecl()).second)
+ llvm_unreachable("protocol already synthesized");
+
+}
+
+void RewriteModernObjC::RewriteObjCProtocolListMetaData(
+ const ObjCList<ObjCProtocolDecl> &Protocols,
+ StringRef prefix, StringRef ClassName,
+ std::string &Result) {
+ if (Protocols.empty()) return;
+
+ for (unsigned i = 0; i != Protocols.size(); i++)
+ RewriteObjCProtocolMetaData(Protocols[i], Result);
+
+ // Output the top lovel protocol meta-data for the class.
+ /* struct _objc_protocol_list {
+ struct _objc_protocol_list *next;
+ int protocol_count;
+ struct _objc_protocol *class_protocols[];
+ }
+ */
+ Result += "\n";
+ if (LangOpts.MicrosoftExt)
+ Result += "__declspec(allocate(\".cat_cls_meth$B\")) ";
+ Result += "static struct {\n";
+ Result += "\tstruct _objc_protocol_list *next;\n";
+ Result += "\tint protocol_count;\n";
+ Result += "\tstruct _objc_protocol *class_protocols[";
+ Result += utostr(Protocols.size());
+ Result += "];\n} _OBJC_";
+ Result += prefix;
+ Result += "_PROTOCOLS_";
+ Result += ClassName;
+ Result += " __attribute__ ((used, section (\"__OBJC, __cat_cls_meth\")))= "
+ "{\n\t0, ";
+ Result += utostr(Protocols.size());
+ Result += "\n";
+
+ Result += "\t,{&_OBJC_PROTOCOL_";
+ Result += Protocols[0]->getNameAsString();
+ Result += " \n";
+
+ for (unsigned i = 1; i != Protocols.size(); i++) {
+ Result += "\t ,&_OBJC_PROTOCOL_";
+ Result += Protocols[i]->getNameAsString();
+ Result += "\n";
+ }
+ Result += "\t }\n};\n";
+}
+
+/// hasObjCExceptionAttribute - Return true if this class or any super
+/// class has the __objc_exception__ attribute.
+/// FIXME. Move this to ASTContext.cpp as it is also used for IRGen.
+static bool hasObjCExceptionAttribute(ASTContext &Context,
+ const ObjCInterfaceDecl *OID) {
+ if (OID->hasAttr<ObjCExceptionAttr>())
+ return true;
+ if (const ObjCInterfaceDecl *Super = OID->getSuperClass())
+ return hasObjCExceptionAttribute(Context, Super);
+ return false;
+}
+
+void RewriteModernObjC::RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
+ std::string &Result) {
+ ObjCInterfaceDecl *CDecl = IDecl->getClassInterface();
+
+ // Explicitly declared @interface's are already synthesized.
+ if (CDecl->isImplicitInterfaceDecl())
+ assert(false &&
+ "Legacy implicit interface rewriting not supported in moder abi");
+
+ WriteModernMetadataDeclarations(Context, Result);
+ SmallVector<ObjCIvarDecl *, 8> IVars;
+
+ for (ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
+ IVD; IVD = IVD->getNextIvar()) {
+ // Ignore unnamed bit-fields.
+ if (!IVD->getDeclName())
+ continue;
+ IVars.push_back(IVD);
+ }
+
+ Write__ivar_list_t_initializer(*this, Context, Result, IVars,
+ "_OBJC_$_INSTANCE_VARIABLES_",
+ CDecl);
+
+ // Build _objc_method_list for class's instance methods if needed
+ SmallVector<ObjCMethodDecl *, 32> InstanceMethods(IDecl->instance_methods());
+
+ // If any of our property implementations have associated getters or
+ // setters, produce metadata for them as well.
+ for (const auto *Prop : IDecl->property_impls()) {
+ if (Prop->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
+ continue;
+ if (!Prop->getPropertyIvarDecl())
+ continue;
+ ObjCPropertyDecl *PD = Prop->getPropertyDecl();
+ if (!PD)
+ continue;
+ if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl())
+ if (mustSynthesizeSetterGetterMethod(IDecl, PD, true /*getter*/))
+ InstanceMethods.push_back(Getter);
+ if (PD->isReadOnly())
+ continue;
+ if (ObjCMethodDecl *Setter = PD->getSetterMethodDecl())
+ if (mustSynthesizeSetterGetterMethod(IDecl, PD, false /*setter*/))
+ InstanceMethods.push_back(Setter);
+ }
+
+ Write_method_list_t_initializer(*this, Context, Result, InstanceMethods,
+ "_OBJC_$_INSTANCE_METHODS_",
+ IDecl->getNameAsString(), true);
+
+ SmallVector<ObjCMethodDecl *, 32> ClassMethods(IDecl->class_methods());
+
+ Write_method_list_t_initializer(*this, Context, Result, ClassMethods,
+ "_OBJC_$_CLASS_METHODS_",
+ IDecl->getNameAsString(), true);
+
+ // Protocols referenced in class declaration?
+ // Protocol's super protocol list
+ std::vector<ObjCProtocolDecl *> RefedProtocols;
+ const ObjCList<ObjCProtocolDecl> &Protocols = CDecl->getReferencedProtocols();
+ for (ObjCList<ObjCProtocolDecl>::iterator I = Protocols.begin(),
+ E = Protocols.end();
+ I != E; ++I) {
+ RefedProtocols.push_back(*I);
+ // Must write out all protocol definitions in current qualifier list,
+ // and in their nested qualifiers before writing out current definition.
+ RewriteObjCProtocolMetaData(*I, Result);
+ }
+
+ Write_protocol_list_initializer(Context, Result,
+ RefedProtocols,
+ "_OBJC_CLASS_PROTOCOLS_$_",
+ IDecl->getNameAsString());
+
+ // Protocol's property metadata.
+ SmallVector<ObjCPropertyDecl *, 8> ClassProperties(CDecl->properties());
+ Write_prop_list_t_initializer(*this, Context, Result, ClassProperties,
+ /* Container */IDecl,
+ "_OBJC_$_PROP_LIST_",
+ CDecl->getNameAsString());
+
+
+ // Data for initializing _class_ro_t metaclass meta-data
+ uint32_t flags = CLS_META;
+ std::string InstanceSize;
+ std::string InstanceStart;
+
+
+ bool classIsHidden = CDecl->getVisibility() == HiddenVisibility;
+ if (classIsHidden)
+ flags |= OBJC2_CLS_HIDDEN;
+
+ if (!CDecl->getSuperClass())
+ // class is root
+ flags |= CLS_ROOT;
+ InstanceSize = "sizeof(struct _class_t)";
+ InstanceStart = InstanceSize;
+ Write__class_ro_t_initializer(Context, Result, flags,
+ InstanceStart, InstanceSize,
+ ClassMethods,
+ nullptr,
+ nullptr,
+ nullptr,
+ "_OBJC_METACLASS_RO_$_",
+ CDecl->getNameAsString());
+
+ // Data for initializing _class_ro_t meta-data
+ flags = CLS;
+ if (classIsHidden)
+ flags |= OBJC2_CLS_HIDDEN;
+
+ if (hasObjCExceptionAttribute(*Context, CDecl))
+ flags |= CLS_EXCEPTION;
+
+ if (!CDecl->getSuperClass())
+ // class is root
+ flags |= CLS_ROOT;
+
+ InstanceSize.clear();
+ InstanceStart.clear();
+ if (!ObjCSynthesizedStructs.count(CDecl)) {
+ InstanceSize = "0";
+ InstanceStart = "0";
+ }
+ else {
+ InstanceSize = "sizeof(struct ";
+ InstanceSize += CDecl->getNameAsString();
+ InstanceSize += "_IMPL)";
+
+ ObjCIvarDecl *IVD = CDecl->all_declared_ivar_begin();
+ if (IVD) {
+ RewriteIvarOffsetComputation(IVD, InstanceStart);
+ }
+ else
+ InstanceStart = InstanceSize;
+ }
+ Write__class_ro_t_initializer(Context, Result, flags,
+ InstanceStart, InstanceSize,
+ InstanceMethods,
+ RefedProtocols,
+ IVars,
+ ClassProperties,
+ "_OBJC_CLASS_RO_$_",
+ CDecl->getNameAsString());
+
+ Write_class_t(Context, Result,
+ "OBJC_METACLASS_$_",
+ CDecl, /*metaclass*/true);
+
+ Write_class_t(Context, Result,
+ "OBJC_CLASS_$_",
+ CDecl, /*metaclass*/false);
+
+ if (ImplementationIsNonLazy(IDecl))
+ DefinedNonLazyClasses.push_back(CDecl);
+
+}
+
+void RewriteModernObjC::RewriteClassSetupInitHook(std::string &Result) {
+ int ClsDefCount = ClassImplementation.size();
+ if (!ClsDefCount)
+ return;
+ Result += "#pragma section(\".objc_inithooks$B\", long, read, write)\n";
+ Result += "__declspec(allocate(\".objc_inithooks$B\")) ";
+ Result += "static void *OBJC_CLASS_SETUP[] = {\n";
+ for (int i = 0; i < ClsDefCount; i++) {
+ ObjCImplementationDecl *IDecl = ClassImplementation[i];
+ ObjCInterfaceDecl *CDecl = IDecl->getClassInterface();
+ Result += "\t(void *)&OBJC_CLASS_SETUP_$_";
+ Result += CDecl->getName(); Result += ",\n";
+ }
+ Result += "};\n";
+}
+
+void RewriteModernObjC::RewriteMetaDataIntoBuffer(std::string &Result) {
+ int ClsDefCount = ClassImplementation.size();
+ int CatDefCount = CategoryImplementation.size();
+
+ // For each implemented class, write out all its meta data.
+ for (int i = 0; i < ClsDefCount; i++)
+ RewriteObjCClassMetaData(ClassImplementation[i], Result);
+
+ RewriteClassSetupInitHook(Result);
+
+ // For each implemented category, write out all its meta data.
+ for (int i = 0; i < CatDefCount; i++)
+ RewriteObjCCategoryImplDecl(CategoryImplementation[i], Result);
+
+ RewriteCategorySetupInitHook(Result);
+
+ if (ClsDefCount > 0) {
+ if (LangOpts.MicrosoftExt)
+ Result += "__declspec(allocate(\".objc_classlist$B\")) ";
+ Result += "static struct _class_t *L_OBJC_LABEL_CLASS_$ [";
+ Result += llvm::utostr(ClsDefCount); Result += "]";
+ Result +=
+ " __attribute__((used, section (\"__DATA, __objc_classlist,"
+ "regular,no_dead_strip\")))= {\n";
+ for (int i = 0; i < ClsDefCount; i++) {
+ Result += "\t&OBJC_CLASS_$_";
+ Result += ClassImplementation[i]->getNameAsString();
+ Result += ",\n";
+ }
+ Result += "};\n";
+
+ if (!DefinedNonLazyClasses.empty()) {
+ if (LangOpts.MicrosoftExt)
+ Result += "__declspec(allocate(\".objc_nlclslist$B\")) \n";
+ Result += "static struct _class_t *_OBJC_LABEL_NONLAZY_CLASS_$[] = {\n\t";
+ for (unsigned i = 0, e = DefinedNonLazyClasses.size(); i < e; i++) {
+ Result += "\t&OBJC_CLASS_$_"; Result += DefinedNonLazyClasses[i]->getNameAsString();
+ Result += ",\n";
+ }
+ Result += "};\n";
+ }
+ }
+
+ if (CatDefCount > 0) {
+ if (LangOpts.MicrosoftExt)
+ Result += "__declspec(allocate(\".objc_catlist$B\")) ";
+ Result += "static struct _category_t *L_OBJC_LABEL_CATEGORY_$ [";
+ Result += llvm::utostr(CatDefCount); Result += "]";
+ Result +=
+ " __attribute__((used, section (\"__DATA, __objc_catlist,"
+ "regular,no_dead_strip\")))= {\n";
+ for (int i = 0; i < CatDefCount; i++) {
+ Result += "\t&_OBJC_$_CATEGORY_";
+ Result +=
+ CategoryImplementation[i]->getClassInterface()->getNameAsString();
+ Result += "_$_";
+ Result += CategoryImplementation[i]->getNameAsString();
+ Result += ",\n";
+ }
+ Result += "};\n";
+ }
+
+ if (!DefinedNonLazyCategories.empty()) {
+ if (LangOpts.MicrosoftExt)
+ Result += "__declspec(allocate(\".objc_nlcatlist$B\")) \n";
+ Result += "static struct _category_t *_OBJC_LABEL_NONLAZY_CATEGORY_$[] = {\n\t";
+ for (unsigned i = 0, e = DefinedNonLazyCategories.size(); i < e; i++) {
+ Result += "\t&_OBJC_$_CATEGORY_";
+ Result +=
+ DefinedNonLazyCategories[i]->getClassInterface()->getNameAsString();
+ Result += "_$_";
+ Result += DefinedNonLazyCategories[i]->getNameAsString();
+ Result += ",\n";
+ }
+ Result += "};\n";
+ }
+}
+
+void RewriteModernObjC::WriteImageInfo(std::string &Result) {
+ if (LangOpts.MicrosoftExt)
+ Result += "__declspec(allocate(\".objc_imageinfo$B\")) \n";
+
+ Result += "static struct IMAGE_INFO { unsigned version; unsigned flag; } ";
+ // version 0, ObjCABI is 2
+ Result += "_OBJC_IMAGE_INFO = { 0, 2 };\n";
+}
+
+/// RewriteObjCCategoryImplDecl - Rewrite metadata for each category
+/// implementation.
+void RewriteModernObjC::RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *IDecl,
+ std::string &Result) {
+ WriteModernMetadataDeclarations(Context, Result);
+ ObjCInterfaceDecl *ClassDecl = IDecl->getClassInterface();
+ // Find category declaration for this implementation.
+ ObjCCategoryDecl *CDecl
+ = ClassDecl->FindCategoryDeclaration(IDecl->getIdentifier());
+
+ std::string FullCategoryName = ClassDecl->getNameAsString();
+ FullCategoryName += "_$_";
+ FullCategoryName += CDecl->getNameAsString();
+
+ // Build _objc_method_list for class's instance methods if needed
+ SmallVector<ObjCMethodDecl *, 32> InstanceMethods(IDecl->instance_methods());
+
+ // If any of our property implementations have associated getters or
+ // setters, produce metadata for them as well.
+ for (const auto *Prop : IDecl->property_impls()) {
+ if (Prop->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
+ continue;
+ if (!Prop->getPropertyIvarDecl())
+ continue;
+ ObjCPropertyDecl *PD = Prop->getPropertyDecl();
+ if (!PD)
+ continue;
+ if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl())
+ InstanceMethods.push_back(Getter);
+ if (PD->isReadOnly())
+ continue;
+ if (ObjCMethodDecl *Setter = PD->getSetterMethodDecl())
+ InstanceMethods.push_back(Setter);
+ }
+
+ Write_method_list_t_initializer(*this, Context, Result, InstanceMethods,
+ "_OBJC_$_CATEGORY_INSTANCE_METHODS_",
+ FullCategoryName, true);
+
+ SmallVector<ObjCMethodDecl *, 32> ClassMethods(IDecl->class_methods());
+
+ Write_method_list_t_initializer(*this, Context, Result, ClassMethods,
+ "_OBJC_$_CATEGORY_CLASS_METHODS_",
+ FullCategoryName, true);
+
+ // Protocols referenced in class declaration?
+ // Protocol's super protocol list
+ SmallVector<ObjCProtocolDecl *, 8> RefedProtocols(CDecl->protocols());
+ for (auto *I : CDecl->protocols())
+ // Must write out all protocol definitions in current qualifier list,
+ // and in their nested qualifiers before writing out current definition.
+ RewriteObjCProtocolMetaData(I, Result);
+
+ Write_protocol_list_initializer(Context, Result,
+ RefedProtocols,
+ "_OBJC_CATEGORY_PROTOCOLS_$_",
+ FullCategoryName);
+
+ // Protocol's property metadata.
+ SmallVector<ObjCPropertyDecl *, 8> ClassProperties(CDecl->properties());
+ Write_prop_list_t_initializer(*this, Context, Result, ClassProperties,
+ /* Container */IDecl,
+ "_OBJC_$_PROP_LIST_",
+ FullCategoryName);
+
+ Write_category_t(*this, Context, Result,
+ CDecl,
+ ClassDecl,
+ InstanceMethods,
+ ClassMethods,
+ RefedProtocols,
+ ClassProperties);
+
+ // Determine if this category is also "non-lazy".
+ if (ImplementationIsNonLazy(IDecl))
+ DefinedNonLazyCategories.push_back(CDecl);
+
+}
+
+void RewriteModernObjC::RewriteCategorySetupInitHook(std::string &Result) {
+ int CatDefCount = CategoryImplementation.size();
+ if (!CatDefCount)
+ return;
+ Result += "#pragma section(\".objc_inithooks$B\", long, read, write)\n";
+ Result += "__declspec(allocate(\".objc_inithooks$B\")) ";
+ Result += "static void *OBJC_CATEGORY_SETUP[] = {\n";
+ for (int i = 0; i < CatDefCount; i++) {
+ ObjCCategoryImplDecl *IDecl = CategoryImplementation[i];
+ ObjCCategoryDecl *CatDecl= IDecl->getCategoryDecl();
+ ObjCInterfaceDecl *ClassDecl = IDecl->getClassInterface();
+ Result += "\t(void *)&OBJC_CATEGORY_SETUP_$_";
+ Result += ClassDecl->getName();
+ Result += "_$_";
+ Result += CatDecl->getName();
+ Result += ",\n";
+ }
+ Result += "};\n";
+}
+
+// RewriteObjCMethodsMetaData - Rewrite methods metadata for instance or
+/// class methods.
+template<typename MethodIterator>
+void RewriteModernObjC::RewriteObjCMethodsMetaData(MethodIterator MethodBegin,
+ MethodIterator MethodEnd,
+ bool IsInstanceMethod,
+ StringRef prefix,
+ StringRef ClassName,
+ std::string &Result) {
+ if (MethodBegin == MethodEnd) return;
+
+ if (!objc_impl_method) {
+ /* struct _objc_method {
+ SEL _cmd;
+ char *method_types;
+ void *_imp;
+ }
+ */
+ Result += "\nstruct _objc_method {\n";
+ Result += "\tSEL _cmd;\n";
+ Result += "\tchar *method_types;\n";
+ Result += "\tvoid *_imp;\n";
+ Result += "};\n";
+
+ objc_impl_method = true;
+ }
+
+ // Build _objc_method_list for class's methods if needed
+
+ /* struct {
+ struct _objc_method_list *next_method;
+ int method_count;
+ struct _objc_method method_list[];
+ }
+ */
+ unsigned NumMethods = std::distance(MethodBegin, MethodEnd);
+ Result += "\n";
+ if (LangOpts.MicrosoftExt) {
+ if (IsInstanceMethod)
+ Result += "__declspec(allocate(\".inst_meth$B\")) ";
+ else
+ Result += "__declspec(allocate(\".cls_meth$B\")) ";
+ }
+ Result += "static struct {\n";
+ Result += "\tstruct _objc_method_list *next_method;\n";
+ Result += "\tint method_count;\n";
+ Result += "\tstruct _objc_method method_list[";
+ Result += utostr(NumMethods);
+ Result += "];\n} _OBJC_";
+ Result += prefix;
+ Result += IsInstanceMethod ? "INSTANCE" : "CLASS";
+ Result += "_METHODS_";
+ Result += ClassName;
+ Result += " __attribute__ ((used, section (\"__OBJC, __";
+ Result += IsInstanceMethod ? "inst" : "cls";
+ Result += "_meth\")))= ";
+ Result += "{\n\t0, " + utostr(NumMethods) + "\n";
+
+ Result += "\t,{{(SEL)\"";
+ Result += (*MethodBegin)->getSelector().getAsString().c_str();
+ std::string MethodTypeString;
+ Context->getObjCEncodingForMethodDecl(*MethodBegin, MethodTypeString);
+ Result += "\", \"";
+ Result += MethodTypeString;
+ Result += "\", (void *)";
+ Result += MethodInternalNames[*MethodBegin];
+ Result += "}\n";
+ for (++MethodBegin; MethodBegin != MethodEnd; ++MethodBegin) {
+ Result += "\t ,{(SEL)\"";
+ Result += (*MethodBegin)->getSelector().getAsString().c_str();
+ std::string MethodTypeString;
+ Context->getObjCEncodingForMethodDecl(*MethodBegin, MethodTypeString);
+ Result += "\", \"";
+ Result += MethodTypeString;
+ Result += "\", (void *)";
+ Result += MethodInternalNames[*MethodBegin];
+ Result += "}\n";
+ }
+ Result += "\t }\n};\n";
+}
+
+Stmt *RewriteModernObjC::RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV) {
+ SourceRange OldRange = IV->getSourceRange();
+ Expr *BaseExpr = IV->getBase();
+
+ // Rewrite the base, but without actually doing replaces.
+ {
+ DisableReplaceStmtScope S(*this);
+ BaseExpr = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(BaseExpr));
+ IV->setBase(BaseExpr);
+ }
+
+ ObjCIvarDecl *D = IV->getDecl();
+
+ Expr *Replacement = IV;
+
+ if (BaseExpr->getType()->isObjCObjectPointerType()) {
+ const ObjCInterfaceType *iFaceDecl =
+ dyn_cast<ObjCInterfaceType>(BaseExpr->getType()->getPointeeType());
+ assert(iFaceDecl && "RewriteObjCIvarRefExpr - iFaceDecl is null");
+ // lookup which class implements the instance variable.
+ ObjCInterfaceDecl *clsDeclared = nullptr;
+ iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(),
+ clsDeclared);
+ assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class");
+
+ // Build name of symbol holding ivar offset.
+ std::string IvarOffsetName;
+ if (D->isBitField())
+ ObjCIvarBitfieldGroupOffset(D, IvarOffsetName);
+ else
+ WriteInternalIvarName(clsDeclared, D, IvarOffsetName);
+
+ ReferencedIvars[clsDeclared].insert(D);
+
+ // cast offset to "char *".
+ CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(Context->CharTy),
+ CK_BitCast,
+ BaseExpr);
+ VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
+ SourceLocation(), &Context->Idents.get(IvarOffsetName),
+ Context->UnsignedLongTy, nullptr,
+ SC_Extern);
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(NewVD, false,
+ Context->UnsignedLongTy, VK_LValue,
+ SourceLocation());
+ BinaryOperator *addExpr =
+ new (Context) BinaryOperator(castExpr, DRE, BO_Add,
+ Context->getPointerType(Context->CharTy),
+ VK_RValue, OK_Ordinary, SourceLocation(), false);
+ // Don't forget the parens to enforce the proper binding.
+ ParenExpr *PE = new (Context) ParenExpr(SourceLocation(),
+ SourceLocation(),
+ addExpr);
+ QualType IvarT = D->getType();
+ if (D->isBitField())
+ IvarT = GetGroupRecordTypeForObjCIvarBitfield(D);
+
+ if (!isa<TypedefType>(IvarT) && IvarT->isRecordType()) {
+ RecordDecl *RD = IvarT->getAs<RecordType>()->getDecl();
+ RD = RD->getDefinition();
+ if (RD && !RD->getDeclName().getAsIdentifierInfo()) {
+ // decltype(((Foo_IMPL*)0)->bar) *
+ ObjCContainerDecl *CDecl =
+ dyn_cast<ObjCContainerDecl>(D->getDeclContext());
+ // ivar in class extensions requires special treatment.
+ if (ObjCCategoryDecl *CatDecl = dyn_cast<ObjCCategoryDecl>(CDecl))
+ CDecl = CatDecl->getClassInterface();
+ std::string RecName = CDecl->getName();
+ RecName += "_IMPL";
+ RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get(RecName.c_str()));
+ QualType PtrStructIMPL = Context->getPointerType(Context->getTagDeclType(RD));
+ unsigned UnsignedIntSize =
+ static_cast<unsigned>(Context->getTypeSize(Context->UnsignedIntTy));
+ Expr *Zero = IntegerLiteral::Create(*Context,
+ llvm::APInt(UnsignedIntSize, 0),
+ Context->UnsignedIntTy, SourceLocation());
+ Zero = NoTypeInfoCStyleCastExpr(Context, PtrStructIMPL, CK_BitCast, Zero);
+ ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
+ Zero);
+ FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
+ SourceLocation(),
+ &Context->Idents.get(D->getNameAsString()),
+ IvarT, nullptr,
+ /*BitWidth=*/nullptr,
+ /*Mutable=*/true, ICIS_NoInit);
+ MemberExpr *ME = new (Context) MemberExpr(PE, true, FD, SourceLocation(),
+ FD->getType(), VK_LValue,
+ OK_Ordinary);
+ IvarT = Context->getDecltypeType(ME, ME->getType());
+ }
+ }
+ convertObjCTypeToCStyleType(IvarT);
+ QualType castT = Context->getPointerType(IvarT);
+
+ castExpr = NoTypeInfoCStyleCastExpr(Context,
+ castT,
+ CK_BitCast,
+ PE);
+
+
+ Expr *Exp = new (Context) UnaryOperator(castExpr, UO_Deref, IvarT,
+ VK_LValue, OK_Ordinary,
+ SourceLocation());
+ PE = new (Context) ParenExpr(OldRange.getBegin(),
+ OldRange.getEnd(),
+ Exp);
+
+ if (D->isBitField()) {
+ FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
+ SourceLocation(),
+ &Context->Idents.get(D->getNameAsString()),
+ D->getType(), nullptr,
+ /*BitWidth=*/D->getBitWidth(),
+ /*Mutable=*/true, ICIS_NoInit);
+ MemberExpr *ME = new (Context) MemberExpr(PE, /*isArrow*/false, FD, SourceLocation(),
+ FD->getType(), VK_LValue,
+ OK_Ordinary);
+ Replacement = ME;
+
+ }
+ else
+ Replacement = PE;
+ }
+
+ ReplaceStmtWithRange(IV, Replacement, OldRange);
+ return Replacement;
+}
+
+#endif
diff --git a/lib/Frontend/Rewrite/RewriteObjC.cpp b/lib/Frontend/Rewrite/RewriteObjC.cpp
new file mode 100644
index 0000000..5fb2374
--- /dev/null
+++ b/lib/Frontend/Rewrite/RewriteObjC.cpp
@@ -0,0 +1,5935 @@
+//===--- RewriteObjC.cpp - Playground for the code rewriter ---------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Hacks and fun related to the code rewriter.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Rewrite/Frontend/ASTConsumers.h"
+#include "clang/AST/AST.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/AST/Attr.h"
+#include "clang/AST/ParentMap.h"
+#include "clang/Basic/CharInfo.h"
+#include "clang/Basic/Diagnostic.h"
+#include "clang/Basic/IdentifierTable.h"
+#include "clang/Basic/SourceManager.h"
+#include "clang/Lex/Lexer.h"
+#include "clang/Rewrite/Core/Rewriter.h"
+#include "llvm/ADT/DenseSet.h"
+#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/raw_ostream.h"
+#include <memory>
+
+#ifdef CLANG_ENABLE_OBJC_REWRITER
+
+using namespace clang;
+using llvm::utostr;
+
+namespace {
+ class RewriteObjC : public ASTConsumer {
+ protected:
+
+ enum {
+ BLOCK_FIELD_IS_OBJECT = 3, /* id, NSObject, __attribute__((NSObject)),
+ block, ... */
+ BLOCK_FIELD_IS_BLOCK = 7, /* a block variable */
+ BLOCK_FIELD_IS_BYREF = 8, /* the on stack structure holding the
+ __block variable */
+ BLOCK_FIELD_IS_WEAK = 16, /* declared __weak, only used in byref copy
+ helpers */
+ BLOCK_BYREF_CALLER = 128, /* called from __block (byref) copy/dispose
+ support routines */
+ BLOCK_BYREF_CURRENT_MAX = 256
+ };
+
+ enum {
+ BLOCK_NEEDS_FREE = (1 << 24),
+ BLOCK_HAS_COPY_DISPOSE = (1 << 25),
+ BLOCK_HAS_CXX_OBJ = (1 << 26),
+ BLOCK_IS_GC = (1 << 27),
+ BLOCK_IS_GLOBAL = (1 << 28),
+ BLOCK_HAS_DESCRIPTOR = (1 << 29)
+ };
+ static const int OBJC_ABI_VERSION = 7;
+
+ Rewriter Rewrite;
+ DiagnosticsEngine &Diags;
+ const LangOptions &LangOpts;
+ ASTContext *Context;
+ SourceManager *SM;
+ TranslationUnitDecl *TUDecl;
+ FileID MainFileID;
+ const char *MainFileStart, *MainFileEnd;
+ Stmt *CurrentBody;
+ ParentMap *PropParentMap; // created lazily.
+ std::string InFileName;
+ raw_ostream* OutFile;
+ std::string Preamble;
+
+ TypeDecl *ProtocolTypeDecl;
+ VarDecl *GlobalVarDecl;
+ unsigned RewriteFailedDiag;
+ // ObjC string constant support.
+ unsigned NumObjCStringLiterals;
+ VarDecl *ConstantStringClassReference;
+ RecordDecl *NSStringRecord;
+
+ // ObjC foreach break/continue generation support.
+ int BcLabelCount;
+
+ unsigned TryFinallyContainsReturnDiag;
+ // Needed for super.
+ ObjCMethodDecl *CurMethodDef;
+ RecordDecl *SuperStructDecl;
+ RecordDecl *ConstantStringDecl;
+
+ FunctionDecl *MsgSendFunctionDecl;
+ FunctionDecl *MsgSendSuperFunctionDecl;
+ FunctionDecl *MsgSendStretFunctionDecl;
+ FunctionDecl *MsgSendSuperStretFunctionDecl;
+ FunctionDecl *MsgSendFpretFunctionDecl;
+ FunctionDecl *GetClassFunctionDecl;
+ FunctionDecl *GetMetaClassFunctionDecl;
+ FunctionDecl *GetSuperClassFunctionDecl;
+ FunctionDecl *SelGetUidFunctionDecl;
+ FunctionDecl *CFStringFunctionDecl;
+ FunctionDecl *SuperConstructorFunctionDecl;
+ FunctionDecl *CurFunctionDef;
+ FunctionDecl *CurFunctionDeclToDeclareForBlock;
+
+ /* Misc. containers needed for meta-data rewrite. */
+ SmallVector<ObjCImplementationDecl *, 8> ClassImplementation;
+ SmallVector<ObjCCategoryImplDecl *, 8> CategoryImplementation;
+ llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCSynthesizedStructs;
+ llvm::SmallPtrSet<ObjCProtocolDecl*, 8> ObjCSynthesizedProtocols;
+ llvm::SmallPtrSet<ObjCInterfaceDecl*, 8> ObjCForwardDecls;
+ llvm::DenseMap<ObjCMethodDecl*, std::string> MethodInternalNames;
+ SmallVector<Stmt *, 32> Stmts;
+ SmallVector<int, 8> ObjCBcLabelNo;
+ // Remember all the @protocol(<expr>) expressions.
+ llvm::SmallPtrSet<ObjCProtocolDecl *, 32> ProtocolExprDecls;
+
+ llvm::DenseSet<uint64_t> CopyDestroyCache;
+
+ // Block expressions.
+ SmallVector<BlockExpr *, 32> Blocks;
+ SmallVector<int, 32> InnerDeclRefsCount;
+ SmallVector<DeclRefExpr *, 32> InnerDeclRefs;
+
+ SmallVector<DeclRefExpr *, 32> BlockDeclRefs;
+
+ // Block related declarations.
+ SmallVector<ValueDecl *, 8> BlockByCopyDecls;
+ llvm::SmallPtrSet<ValueDecl *, 8> BlockByCopyDeclsPtrSet;
+ SmallVector<ValueDecl *, 8> BlockByRefDecls;
+ llvm::SmallPtrSet<ValueDecl *, 8> BlockByRefDeclsPtrSet;
+ llvm::DenseMap<ValueDecl *, unsigned> BlockByRefDeclNo;
+ llvm::SmallPtrSet<ValueDecl *, 8> ImportedBlockDecls;
+ llvm::SmallPtrSet<VarDecl *, 8> ImportedLocalExternalDecls;
+
+ llvm::DenseMap<BlockExpr *, std::string> RewrittenBlockExprs;
+
+ // This maps an original source AST to it's rewritten form. This allows
+ // us to avoid rewriting the same node twice (which is very uncommon).
+ // This is needed to support some of the exotic property rewriting.
+ llvm::DenseMap<Stmt *, Stmt *> ReplacedNodes;
+
+ // Needed for header files being rewritten
+ bool IsHeader;
+ bool SilenceRewriteMacroWarning;
+ bool objc_impl_method;
+
+ bool DisableReplaceStmt;
+ class DisableReplaceStmtScope {
+ RewriteObjC &R;
+ bool SavedValue;
+
+ public:
+ DisableReplaceStmtScope(RewriteObjC &R)
+ : R(R), SavedValue(R.DisableReplaceStmt) {
+ R.DisableReplaceStmt = true;
+ }
+ ~DisableReplaceStmtScope() {
+ R.DisableReplaceStmt = SavedValue;
+ }
+ };
+ void InitializeCommon(ASTContext &context);
+
+ public:
+
+ // Top Level Driver code.
+ bool HandleTopLevelDecl(DeclGroupRef D) override {
+ for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) {
+ if (ObjCInterfaceDecl *Class = dyn_cast<ObjCInterfaceDecl>(*I)) {
+ if (!Class->isThisDeclarationADefinition()) {
+ RewriteForwardClassDecl(D);
+ break;
+ }
+ }
+
+ if (ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>(*I)) {
+ if (!Proto->isThisDeclarationADefinition()) {
+ RewriteForwardProtocolDecl(D);
+ break;
+ }
+ }
+
+ HandleTopLevelSingleDecl(*I);
+ }
+ return true;
+ }
+ void HandleTopLevelSingleDecl(Decl *D);
+ void HandleDeclInMainFile(Decl *D);
+ RewriteObjC(std::string inFile, raw_ostream *OS,
+ DiagnosticsEngine &D, const LangOptions &LOpts,
+ bool silenceMacroWarn);
+
+ ~RewriteObjC() {}
+
+ void HandleTranslationUnit(ASTContext &C) override;
+
+ void ReplaceStmt(Stmt *Old, Stmt *New) {
+ ReplaceStmtWithRange(Old, New, Old->getSourceRange());
+ }
+
+ void ReplaceStmtWithRange(Stmt *Old, Stmt *New, SourceRange SrcRange) {
+ assert(Old != nullptr && New != nullptr && "Expected non-null Stmt's");
+
+ Stmt *ReplacingStmt = ReplacedNodes[Old];
+ if (ReplacingStmt)
+ return; // We can't rewrite the same node twice.
+
+ if (DisableReplaceStmt)
+ return;
+
+ // Measure the old text.
+ int Size = Rewrite.getRangeSize(SrcRange);
+ if (Size == -1) {
+ Diags.Report(Context->getFullLoc(Old->getLocStart()), RewriteFailedDiag)
+ << Old->getSourceRange();
+ return;
+ }
+ // Get the new text.
+ std::string SStr;
+ llvm::raw_string_ostream S(SStr);
+ New->printPretty(S, nullptr, PrintingPolicy(LangOpts));
+ const std::string &Str = S.str();
+
+ // If replacement succeeded or warning disabled return with no warning.
+ if (!Rewrite.ReplaceText(SrcRange.getBegin(), Size, Str)) {
+ ReplacedNodes[Old] = New;
+ return;
+ }
+ if (SilenceRewriteMacroWarning)
+ return;
+ Diags.Report(Context->getFullLoc(Old->getLocStart()), RewriteFailedDiag)
+ << Old->getSourceRange();
+ }
+
+ void InsertText(SourceLocation Loc, StringRef Str,
+ bool InsertAfter = true) {
+ // If insertion succeeded or warning disabled return with no warning.
+ if (!Rewrite.InsertText(Loc, Str, InsertAfter) ||
+ SilenceRewriteMacroWarning)
+ return;
+
+ Diags.Report(Context->getFullLoc(Loc), RewriteFailedDiag);
+ }
+
+ void ReplaceText(SourceLocation Start, unsigned OrigLength,
+ StringRef Str) {
+ // If removal succeeded or warning disabled return with no warning.
+ if (!Rewrite.ReplaceText(Start, OrigLength, Str) ||
+ SilenceRewriteMacroWarning)
+ return;
+
+ Diags.Report(Context->getFullLoc(Start), RewriteFailedDiag);
+ }
+
+ // Syntactic Rewriting.
+ void RewriteRecordBody(RecordDecl *RD);
+ void RewriteInclude();
+ void RewriteForwardClassDecl(DeclGroupRef D);
+ void RewriteForwardClassDecl(const SmallVectorImpl<Decl *> &DG);
+ void RewriteForwardClassEpilogue(ObjCInterfaceDecl *ClassDecl,
+ const std::string &typedefString);
+ void RewriteImplementations();
+ void RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
+ ObjCImplementationDecl *IMD,
+ ObjCCategoryImplDecl *CID);
+ void RewriteInterfaceDecl(ObjCInterfaceDecl *Dcl);
+ void RewriteImplementationDecl(Decl *Dcl);
+ void RewriteObjCMethodDecl(const ObjCInterfaceDecl *IDecl,
+ ObjCMethodDecl *MDecl, std::string &ResultStr);
+ void RewriteTypeIntoString(QualType T, std::string &ResultStr,
+ const FunctionType *&FPRetType);
+ void RewriteByRefString(std::string &ResultStr, const std::string &Name,
+ ValueDecl *VD, bool def=false);
+ void RewriteCategoryDecl(ObjCCategoryDecl *Dcl);
+ void RewriteProtocolDecl(ObjCProtocolDecl *Dcl);
+ void RewriteForwardProtocolDecl(DeclGroupRef D);
+ void RewriteForwardProtocolDecl(const SmallVectorImpl<Decl *> &DG);
+ void RewriteMethodDeclaration(ObjCMethodDecl *Method);
+ void RewriteProperty(ObjCPropertyDecl *prop);
+ void RewriteFunctionDecl(FunctionDecl *FD);
+ void RewriteBlockPointerType(std::string& Str, QualType Type);
+ void RewriteBlockPointerTypeVariable(std::string& Str, ValueDecl *VD);
+ void RewriteBlockLiteralFunctionDecl(FunctionDecl *FD);
+ void RewriteObjCQualifiedInterfaceTypes(Decl *Dcl);
+ void RewriteTypeOfDecl(VarDecl *VD);
+ void RewriteObjCQualifiedInterfaceTypes(Expr *E);
+
+ // Expression Rewriting.
+ Stmt *RewriteFunctionBodyOrGlobalInitializer(Stmt *S);
+ Stmt *RewriteAtEncode(ObjCEncodeExpr *Exp);
+ Stmt *RewritePropertyOrImplicitGetter(PseudoObjectExpr *Pseudo);
+ Stmt *RewritePropertyOrImplicitSetter(PseudoObjectExpr *Pseudo);
+ Stmt *RewriteAtSelector(ObjCSelectorExpr *Exp);
+ Stmt *RewriteMessageExpr(ObjCMessageExpr *Exp);
+ Stmt *RewriteObjCStringLiteral(ObjCStringLiteral *Exp);
+ Stmt *RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp);
+ void RewriteTryReturnStmts(Stmt *S);
+ void RewriteSyncReturnStmts(Stmt *S, std::string buf);
+ Stmt *RewriteObjCTryStmt(ObjCAtTryStmt *S);
+ Stmt *RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S);
+ Stmt *RewriteObjCThrowStmt(ObjCAtThrowStmt *S);
+ Stmt *RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S,
+ SourceLocation OrigEnd);
+ Stmt *RewriteBreakStmt(BreakStmt *S);
+ Stmt *RewriteContinueStmt(ContinueStmt *S);
+ void RewriteCastExpr(CStyleCastExpr *CE);
+
+ // Block rewriting.
+ void RewriteBlocksInFunctionProtoType(QualType funcType, NamedDecl *D);
+
+ // Block specific rewrite rules.
+ void RewriteBlockPointerDecl(NamedDecl *VD);
+ void RewriteByRefVar(VarDecl *VD);
+ Stmt *RewriteBlockDeclRefExpr(DeclRefExpr *VD);
+ Stmt *RewriteLocalVariableExternalStorage(DeclRefExpr *DRE);
+ void RewriteBlockPointerFunctionArgs(FunctionDecl *FD);
+
+ void RewriteObjCInternalStruct(ObjCInterfaceDecl *CDecl,
+ std::string &Result);
+
+ void Initialize(ASTContext &context) override = 0;
+
+ // Metadata Rewriting.
+ virtual void RewriteMetaDataIntoBuffer(std::string &Result) = 0;
+ virtual void RewriteObjCProtocolListMetaData(const ObjCList<ObjCProtocolDecl> &Prots,
+ StringRef prefix,
+ StringRef ClassName,
+ std::string &Result) = 0;
+ virtual void RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *CDecl,
+ std::string &Result) = 0;
+ virtual void RewriteObjCProtocolMetaData(ObjCProtocolDecl *Protocol,
+ StringRef prefix,
+ StringRef ClassName,
+ std::string &Result) = 0;
+ virtual void RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
+ std::string &Result) = 0;
+
+ // Rewriting ivar access
+ virtual Stmt *RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV) = 0;
+ virtual void RewriteIvarOffsetComputation(ObjCIvarDecl *ivar,
+ std::string &Result) = 0;
+
+ // Misc. AST transformation routines. Sometimes they end up calling
+ // rewriting routines on the new ASTs.
+ CallExpr *SynthesizeCallToFunctionDecl(FunctionDecl *FD,
+ Expr **args, unsigned nargs,
+ SourceLocation StartLoc=SourceLocation(),
+ SourceLocation EndLoc=SourceLocation());
+ CallExpr *SynthMsgSendStretCallExpr(FunctionDecl *MsgSendStretFlavor,
+ QualType msgSendType,
+ QualType returnType,
+ SmallVectorImpl<QualType> &ArgTypes,
+ SmallVectorImpl<Expr*> &MsgExprs,
+ ObjCMethodDecl *Method);
+ Stmt *SynthMessageExpr(ObjCMessageExpr *Exp,
+ SourceLocation StartLoc=SourceLocation(),
+ SourceLocation EndLoc=SourceLocation());
+
+ void SynthCountByEnumWithState(std::string &buf);
+ void SynthMsgSendFunctionDecl();
+ void SynthMsgSendSuperFunctionDecl();
+ void SynthMsgSendStretFunctionDecl();
+ void SynthMsgSendFpretFunctionDecl();
+ void SynthMsgSendSuperStretFunctionDecl();
+ void SynthGetClassFunctionDecl();
+ void SynthGetMetaClassFunctionDecl();
+ void SynthGetSuperClassFunctionDecl();
+ void SynthSelGetUidFunctionDecl();
+ void SynthSuperConstructorFunctionDecl();
+
+ std::string SynthesizeByrefCopyDestroyHelper(VarDecl *VD, int flag);
+ std::string SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
+ StringRef funcName, std::string Tag);
+ std::string SynthesizeBlockFunc(BlockExpr *CE, int i,
+ StringRef funcName, std::string Tag);
+ std::string SynthesizeBlockImpl(BlockExpr *CE,
+ std::string Tag, std::string Desc);
+ std::string SynthesizeBlockDescriptor(std::string DescTag,
+ std::string ImplTag,
+ int i, StringRef funcName,
+ unsigned hasCopy);
+ Stmt *SynthesizeBlockCall(CallExpr *Exp, const Expr* BlockExp);
+ void SynthesizeBlockLiterals(SourceLocation FunLocStart,
+ StringRef FunName);
+ FunctionDecl *SynthBlockInitFunctionDecl(StringRef name);
+ Stmt *SynthBlockInitExpr(BlockExpr *Exp,
+ const SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs);
+
+ // Misc. helper routines.
+ QualType getProtocolType();
+ void WarnAboutReturnGotoStmts(Stmt *S);
+ void HasReturnStmts(Stmt *S, bool &hasReturns);
+ void CheckFunctionPointerDecl(QualType dType, NamedDecl *ND);
+ void InsertBlockLiteralsWithinFunction(FunctionDecl *FD);
+ void InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD);
+
+ bool IsDeclStmtInForeachHeader(DeclStmt *DS);
+ void CollectBlockDeclRefInfo(BlockExpr *Exp);
+ void GetBlockDeclRefExprs(Stmt *S);
+ void GetInnerBlockDeclRefExprs(Stmt *S,
+ SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs,
+ llvm::SmallPtrSetImpl<const DeclContext *> &InnerContexts);
+
+ // We avoid calling Type::isBlockPointerType(), since it operates on the
+ // canonical type. We only care if the top-level type is a closure pointer.
+ bool isTopLevelBlockPointerType(QualType T) {
+ return isa<BlockPointerType>(T);
+ }
+
+ /// convertBlockPointerToFunctionPointer - Converts a block-pointer type
+ /// to a function pointer type and upon success, returns true; false
+ /// otherwise.
+ bool convertBlockPointerToFunctionPointer(QualType &T) {
+ if (isTopLevelBlockPointerType(T)) {
+ const BlockPointerType *BPT = T->getAs<BlockPointerType>();
+ T = Context->getPointerType(BPT->getPointeeType());
+ return true;
+ }
+ return false;
+ }
+
+ bool needToScanForQualifiers(QualType T);
+ QualType getSuperStructType();
+ QualType getConstantStringStructType();
+ QualType convertFunctionTypeOfBlocks(const FunctionType *FT);
+ bool BufferContainsPPDirectives(const char *startBuf, const char *endBuf);
+
+ void convertToUnqualifiedObjCType(QualType &T) {
+ if (T->isObjCQualifiedIdType())
+ T = Context->getObjCIdType();
+ else if (T->isObjCQualifiedClassType())
+ T = Context->getObjCClassType();
+ else if (T->isObjCObjectPointerType() &&
+ T->getPointeeType()->isObjCQualifiedInterfaceType()) {
+ if (const ObjCObjectPointerType * OBJPT =
+ T->getAsObjCInterfacePointerType()) {
+ const ObjCInterfaceType *IFaceT = OBJPT->getInterfaceType();
+ T = QualType(IFaceT, 0);
+ T = Context->getPointerType(T);
+ }
+ }
+ }
+
+ // FIXME: This predicate seems like it would be useful to add to ASTContext.
+ bool isObjCType(QualType T) {
+ if (!LangOpts.ObjC1 && !LangOpts.ObjC2)
+ return false;
+
+ QualType OCT = Context->getCanonicalType(T).getUnqualifiedType();
+
+ if (OCT == Context->getCanonicalType(Context->getObjCIdType()) ||
+ OCT == Context->getCanonicalType(Context->getObjCClassType()))
+ return true;
+
+ if (const PointerType *PT = OCT->getAs<PointerType>()) {
+ if (isa<ObjCInterfaceType>(PT->getPointeeType()) ||
+ PT->getPointeeType()->isObjCQualifiedIdType())
+ return true;
+ }
+ return false;
+ }
+ bool PointerTypeTakesAnyBlockArguments(QualType QT);
+ bool PointerTypeTakesAnyObjCQualifiedType(QualType QT);
+ void GetExtentOfArgList(const char *Name, const char *&LParen,
+ const char *&RParen);
+
+ void QuoteDoublequotes(std::string &From, std::string &To) {
+ for (unsigned i = 0; i < From.length(); i++) {
+ if (From[i] == '"')
+ To += "\\\"";
+ else
+ To += From[i];
+ }
+ }
+
+ QualType getSimpleFunctionType(QualType result,
+ ArrayRef<QualType> args,
+ bool variadic = false) {
+ if (result == Context->getObjCInstanceType())
+ result = Context->getObjCIdType();
+ FunctionProtoType::ExtProtoInfo fpi;
+ fpi.Variadic = variadic;
+ return Context->getFunctionType(result, args, fpi);
+ }
+
+ // Helper function: create a CStyleCastExpr with trivial type source info.
+ CStyleCastExpr* NoTypeInfoCStyleCastExpr(ASTContext *Ctx, QualType Ty,
+ CastKind Kind, Expr *E) {
+ TypeSourceInfo *TInfo = Ctx->getTrivialTypeSourceInfo(Ty, SourceLocation());
+ return CStyleCastExpr::Create(*Ctx, Ty, VK_RValue, Kind, E, nullptr,
+ TInfo, SourceLocation(), SourceLocation());
+ }
+
+ StringLiteral *getStringLiteral(StringRef Str) {
+ QualType StrType = Context->getConstantArrayType(
+ Context->CharTy, llvm::APInt(32, Str.size() + 1), ArrayType::Normal,
+ 0);
+ return StringLiteral::Create(*Context, Str, StringLiteral::Ascii,
+ /*Pascal=*/false, StrType, SourceLocation());
+ }
+ };
+
+ class RewriteObjCFragileABI : public RewriteObjC {
+ public:
+
+ RewriteObjCFragileABI(std::string inFile, raw_ostream *OS,
+ DiagnosticsEngine &D, const LangOptions &LOpts,
+ bool silenceMacroWarn) : RewriteObjC(inFile, OS,
+ D, LOpts,
+ silenceMacroWarn) {}
+
+ ~RewriteObjCFragileABI() {}
+ void Initialize(ASTContext &context) override;
+
+ // Rewriting metadata
+ template<typename MethodIterator>
+ void RewriteObjCMethodsMetaData(MethodIterator MethodBegin,
+ MethodIterator MethodEnd,
+ bool IsInstanceMethod,
+ StringRef prefix,
+ StringRef ClassName,
+ std::string &Result);
+ void RewriteObjCProtocolMetaData(ObjCProtocolDecl *Protocol,
+ StringRef prefix, StringRef ClassName,
+ std::string &Result) override;
+ void RewriteObjCProtocolListMetaData(
+ const ObjCList<ObjCProtocolDecl> &Prots,
+ StringRef prefix, StringRef ClassName, std::string &Result) override;
+ void RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
+ std::string &Result) override;
+ void RewriteMetaDataIntoBuffer(std::string &Result) override;
+ void RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *CDecl,
+ std::string &Result) override;
+
+ // Rewriting ivar
+ void RewriteIvarOffsetComputation(ObjCIvarDecl *ivar,
+ std::string &Result) override;
+ Stmt *RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV) override;
+ };
+}
+
+void RewriteObjC::RewriteBlocksInFunctionProtoType(QualType funcType,
+ NamedDecl *D) {
+ if (const FunctionProtoType *fproto
+ = dyn_cast<FunctionProtoType>(funcType.IgnoreParens())) {
+ for (const auto &I : fproto->param_types())
+ if (isTopLevelBlockPointerType(I)) {
+ // All the args are checked/rewritten. Don't call twice!
+ RewriteBlockPointerDecl(D);
+ break;
+ }
+ }
+}
+
+void RewriteObjC::CheckFunctionPointerDecl(QualType funcType, NamedDecl *ND) {
+ const PointerType *PT = funcType->getAs<PointerType>();
+ if (PT && PointerTypeTakesAnyBlockArguments(funcType))
+ RewriteBlocksInFunctionProtoType(PT->getPointeeType(), ND);
+}
+
+static bool IsHeaderFile(const std::string &Filename) {
+ std::string::size_type DotPos = Filename.rfind('.');
+
+ if (DotPos == std::string::npos) {
+ // no file extension
+ return false;
+ }
+
+ std::string Ext = std::string(Filename.begin()+DotPos+1, Filename.end());
+ // C header: .h
+ // C++ header: .hh or .H;
+ return Ext == "h" || Ext == "hh" || Ext == "H";
+}
+
+RewriteObjC::RewriteObjC(std::string inFile, raw_ostream* OS,
+ DiagnosticsEngine &D, const LangOptions &LOpts,
+ bool silenceMacroWarn)
+ : Diags(D), LangOpts(LOpts), InFileName(inFile), OutFile(OS),
+ SilenceRewriteMacroWarning(silenceMacroWarn) {
+ IsHeader = IsHeaderFile(inFile);
+ RewriteFailedDiag = Diags.getCustomDiagID(DiagnosticsEngine::Warning,
+ "rewriting sub-expression within a macro (may not be correct)");
+ TryFinallyContainsReturnDiag = Diags.getCustomDiagID(
+ DiagnosticsEngine::Warning,
+ "rewriter doesn't support user-specified control flow semantics "
+ "for @try/@finally (code may not execute properly)");
+}
+
+std::unique_ptr<ASTConsumer>
+clang::CreateObjCRewriter(const std::string &InFile, raw_ostream *OS,
+ DiagnosticsEngine &Diags, const LangOptions &LOpts,
+ bool SilenceRewriteMacroWarning) {
+ return llvm::make_unique<RewriteObjCFragileABI>(InFile, OS, Diags, LOpts,
+ SilenceRewriteMacroWarning);
+}
+
+void RewriteObjC::InitializeCommon(ASTContext &context) {
+ Context = &context;
+ SM = &Context->getSourceManager();
+ TUDecl = Context->getTranslationUnitDecl();
+ MsgSendFunctionDecl = nullptr;
+ MsgSendSuperFunctionDecl = nullptr;
+ MsgSendStretFunctionDecl = nullptr;
+ MsgSendSuperStretFunctionDecl = nullptr;
+ MsgSendFpretFunctionDecl = nullptr;
+ GetClassFunctionDecl = nullptr;
+ GetMetaClassFunctionDecl = nullptr;
+ GetSuperClassFunctionDecl = nullptr;
+ SelGetUidFunctionDecl = nullptr;
+ CFStringFunctionDecl = nullptr;
+ ConstantStringClassReference = nullptr;
+ NSStringRecord = nullptr;
+ CurMethodDef = nullptr;
+ CurFunctionDef = nullptr;
+ CurFunctionDeclToDeclareForBlock = nullptr;
+ GlobalVarDecl = nullptr;
+ SuperStructDecl = nullptr;
+ ProtocolTypeDecl = nullptr;
+ ConstantStringDecl = nullptr;
+ BcLabelCount = 0;
+ SuperConstructorFunctionDecl = nullptr;
+ NumObjCStringLiterals = 0;
+ PropParentMap = nullptr;
+ CurrentBody = nullptr;
+ DisableReplaceStmt = false;
+ objc_impl_method = false;
+
+ // Get the ID and start/end of the main file.
+ MainFileID = SM->getMainFileID();
+ const llvm::MemoryBuffer *MainBuf = SM->getBuffer(MainFileID);
+ MainFileStart = MainBuf->getBufferStart();
+ MainFileEnd = MainBuf->getBufferEnd();
+
+ Rewrite.setSourceMgr(Context->getSourceManager(), Context->getLangOpts());
+}
+
+//===----------------------------------------------------------------------===//
+// Top Level Driver Code
+//===----------------------------------------------------------------------===//
+
+void RewriteObjC::HandleTopLevelSingleDecl(Decl *D) {
+ if (Diags.hasErrorOccurred())
+ return;
+
+ // Two cases: either the decl could be in the main file, or it could be in a
+ // #included file. If the former, rewrite it now. If the later, check to see
+ // if we rewrote the #include/#import.
+ SourceLocation Loc = D->getLocation();
+ Loc = SM->getExpansionLoc(Loc);
+
+ // If this is for a builtin, ignore it.
+ if (Loc.isInvalid()) return;
+
+ // Look for built-in declarations that we need to refer during the rewrite.
+ if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
+ RewriteFunctionDecl(FD);
+ } else if (VarDecl *FVD = dyn_cast<VarDecl>(D)) {
+ // declared in <Foundation/NSString.h>
+ if (FVD->getName() == "_NSConstantStringClassReference") {
+ ConstantStringClassReference = FVD;
+ return;
+ }
+ } else if (ObjCInterfaceDecl *ID = dyn_cast<ObjCInterfaceDecl>(D)) {
+ if (ID->isThisDeclarationADefinition())
+ RewriteInterfaceDecl(ID);
+ } else if (ObjCCategoryDecl *CD = dyn_cast<ObjCCategoryDecl>(D)) {
+ RewriteCategoryDecl(CD);
+ } else if (ObjCProtocolDecl *PD = dyn_cast<ObjCProtocolDecl>(D)) {
+ if (PD->isThisDeclarationADefinition())
+ RewriteProtocolDecl(PD);
+ } else if (LinkageSpecDecl *LSD = dyn_cast<LinkageSpecDecl>(D)) {
+ // Recurse into linkage specifications
+ for (DeclContext::decl_iterator DI = LSD->decls_begin(),
+ DIEnd = LSD->decls_end();
+ DI != DIEnd; ) {
+ if (ObjCInterfaceDecl *IFace = dyn_cast<ObjCInterfaceDecl>((*DI))) {
+ if (!IFace->isThisDeclarationADefinition()) {
+ SmallVector<Decl *, 8> DG;
+ SourceLocation StartLoc = IFace->getLocStart();
+ do {
+ if (isa<ObjCInterfaceDecl>(*DI) &&
+ !cast<ObjCInterfaceDecl>(*DI)->isThisDeclarationADefinition() &&
+ StartLoc == (*DI)->getLocStart())
+ DG.push_back(*DI);
+ else
+ break;
+
+ ++DI;
+ } while (DI != DIEnd);
+ RewriteForwardClassDecl(DG);
+ continue;
+ }
+ }
+
+ if (ObjCProtocolDecl *Proto = dyn_cast<ObjCProtocolDecl>((*DI))) {
+ if (!Proto->isThisDeclarationADefinition()) {
+ SmallVector<Decl *, 8> DG;
+ SourceLocation StartLoc = Proto->getLocStart();
+ do {
+ if (isa<ObjCProtocolDecl>(*DI) &&
+ !cast<ObjCProtocolDecl>(*DI)->isThisDeclarationADefinition() &&
+ StartLoc == (*DI)->getLocStart())
+ DG.push_back(*DI);
+ else
+ break;
+
+ ++DI;
+ } while (DI != DIEnd);
+ RewriteForwardProtocolDecl(DG);
+ continue;
+ }
+ }
+
+ HandleTopLevelSingleDecl(*DI);
+ ++DI;
+ }
+ }
+ // If we have a decl in the main file, see if we should rewrite it.
+ if (SM->isWrittenInMainFile(Loc))
+ return HandleDeclInMainFile(D);
+}
+
+//===----------------------------------------------------------------------===//
+// Syntactic (non-AST) Rewriting Code
+//===----------------------------------------------------------------------===//
+
+void RewriteObjC::RewriteInclude() {
+ SourceLocation LocStart = SM->getLocForStartOfFile(MainFileID);
+ StringRef MainBuf = SM->getBufferData(MainFileID);
+ const char *MainBufStart = MainBuf.begin();
+ const char *MainBufEnd = MainBuf.end();
+ size_t ImportLen = strlen("import");
+
+ // Loop over the whole file, looking for includes.
+ for (const char *BufPtr = MainBufStart; BufPtr < MainBufEnd; ++BufPtr) {
+ if (*BufPtr == '#') {
+ if (++BufPtr == MainBufEnd)
+ return;
+ while (*BufPtr == ' ' || *BufPtr == '\t')
+ if (++BufPtr == MainBufEnd)
+ return;
+ if (!strncmp(BufPtr, "import", ImportLen)) {
+ // replace import with include
+ SourceLocation ImportLoc =
+ LocStart.getLocWithOffset(BufPtr-MainBufStart);
+ ReplaceText(ImportLoc, ImportLen, "include");
+ BufPtr += ImportLen;
+ }
+ }
+ }
+}
+
+static std::string getIvarAccessString(ObjCIvarDecl *OID) {
+ const ObjCInterfaceDecl *ClassDecl = OID->getContainingInterface();
+ std::string S;
+ S = "((struct ";
+ S += ClassDecl->getIdentifier()->getName();
+ S += "_IMPL *)self)->";
+ S += OID->getName();
+ return S;
+}
+
+void RewriteObjC::RewritePropertyImplDecl(ObjCPropertyImplDecl *PID,
+ ObjCImplementationDecl *IMD,
+ ObjCCategoryImplDecl *CID) {
+ static bool objcGetPropertyDefined = false;
+ static bool objcSetPropertyDefined = false;
+ SourceLocation startLoc = PID->getLocStart();
+ InsertText(startLoc, "// ");
+ const char *startBuf = SM->getCharacterData(startLoc);
+ assert((*startBuf == '@') && "bogus @synthesize location");
+ const char *semiBuf = strchr(startBuf, ';');
+ assert((*semiBuf == ';') && "@synthesize: can't find ';'");
+ SourceLocation onePastSemiLoc =
+ startLoc.getLocWithOffset(semiBuf-startBuf+1);
+
+ if (PID->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
+ return; // FIXME: is this correct?
+
+ // Generate the 'getter' function.
+ ObjCPropertyDecl *PD = PID->getPropertyDecl();
+ ObjCIvarDecl *OID = PID->getPropertyIvarDecl();
+
+ if (!OID)
+ return;
+ unsigned Attributes = PD->getPropertyAttributes();
+ if (!PD->getGetterMethodDecl()->isDefined()) {
+ bool GenGetProperty = !(Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic) &&
+ (Attributes & (ObjCPropertyDecl::OBJC_PR_retain |
+ ObjCPropertyDecl::OBJC_PR_copy));
+ std::string Getr;
+ if (GenGetProperty && !objcGetPropertyDefined) {
+ objcGetPropertyDefined = true;
+ // FIXME. Is this attribute correct in all cases?
+ Getr = "\nextern \"C\" __declspec(dllimport) "
+ "id objc_getProperty(id, SEL, long, bool);\n";
+ }
+ RewriteObjCMethodDecl(OID->getContainingInterface(),
+ PD->getGetterMethodDecl(), Getr);
+ Getr += "{ ";
+ // Synthesize an explicit cast to gain access to the ivar.
+ // See objc-act.c:objc_synthesize_new_getter() for details.
+ if (GenGetProperty) {
+ // return objc_getProperty(self, _cmd, offsetof(ClassDecl, OID), 1)
+ Getr += "typedef ";
+ const FunctionType *FPRetType = nullptr;
+ RewriteTypeIntoString(PD->getGetterMethodDecl()->getReturnType(), Getr,
+ FPRetType);
+ Getr += " _TYPE";
+ if (FPRetType) {
+ Getr += ")"; // close the precedence "scope" for "*".
+
+ // Now, emit the argument types (if any).
+ if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)){
+ Getr += "(";
+ for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
+ if (i) Getr += ", ";
+ std::string ParamStr =
+ FT->getParamType(i).getAsString(Context->getPrintingPolicy());
+ Getr += ParamStr;
+ }
+ if (FT->isVariadic()) {
+ if (FT->getNumParams())
+ Getr += ", ";
+ Getr += "...";
+ }
+ Getr += ")";
+ } else
+ Getr += "()";
+ }
+ Getr += ";\n";
+ Getr += "return (_TYPE)";
+ Getr += "objc_getProperty(self, _cmd, ";
+ RewriteIvarOffsetComputation(OID, Getr);
+ Getr += ", 1)";
+ }
+ else
+ Getr += "return " + getIvarAccessString(OID);
+ Getr += "; }";
+ InsertText(onePastSemiLoc, Getr);
+ }
+
+ if (PD->isReadOnly() || PD->getSetterMethodDecl()->isDefined())
+ return;
+
+ // Generate the 'setter' function.
+ std::string Setr;
+ bool GenSetProperty = Attributes & (ObjCPropertyDecl::OBJC_PR_retain |
+ ObjCPropertyDecl::OBJC_PR_copy);
+ if (GenSetProperty && !objcSetPropertyDefined) {
+ objcSetPropertyDefined = true;
+ // FIXME. Is this attribute correct in all cases?
+ Setr = "\nextern \"C\" __declspec(dllimport) "
+ "void objc_setProperty (id, SEL, long, id, bool, bool);\n";
+ }
+
+ RewriteObjCMethodDecl(OID->getContainingInterface(),
+ PD->getSetterMethodDecl(), Setr);
+ Setr += "{ ";
+ // Synthesize an explicit cast to initialize the ivar.
+ // See objc-act.c:objc_synthesize_new_setter() for details.
+ if (GenSetProperty) {
+ Setr += "objc_setProperty (self, _cmd, ";
+ RewriteIvarOffsetComputation(OID, Setr);
+ Setr += ", (id)";
+ Setr += PD->getName();
+ Setr += ", ";
+ if (Attributes & ObjCPropertyDecl::OBJC_PR_nonatomic)
+ Setr += "0, ";
+ else
+ Setr += "1, ";
+ if (Attributes & ObjCPropertyDecl::OBJC_PR_copy)
+ Setr += "1)";
+ else
+ Setr += "0)";
+ }
+ else {
+ Setr += getIvarAccessString(OID) + " = ";
+ Setr += PD->getName();
+ }
+ Setr += "; }";
+ InsertText(onePastSemiLoc, Setr);
+}
+
+static void RewriteOneForwardClassDecl(ObjCInterfaceDecl *ForwardDecl,
+ std::string &typedefString) {
+ typedefString += "#ifndef _REWRITER_typedef_";
+ typedefString += ForwardDecl->getNameAsString();
+ typedefString += "\n";
+ typedefString += "#define _REWRITER_typedef_";
+ typedefString += ForwardDecl->getNameAsString();
+ typedefString += "\n";
+ typedefString += "typedef struct objc_object ";
+ typedefString += ForwardDecl->getNameAsString();
+ typedefString += ";\n#endif\n";
+}
+
+void RewriteObjC::RewriteForwardClassEpilogue(ObjCInterfaceDecl *ClassDecl,
+ const std::string &typedefString) {
+ SourceLocation startLoc = ClassDecl->getLocStart();
+ const char *startBuf = SM->getCharacterData(startLoc);
+ const char *semiPtr = strchr(startBuf, ';');
+ // Replace the @class with typedefs corresponding to the classes.
+ ReplaceText(startLoc, semiPtr-startBuf+1, typedefString);
+}
+
+void RewriteObjC::RewriteForwardClassDecl(DeclGroupRef D) {
+ std::string typedefString;
+ for (DeclGroupRef::iterator I = D.begin(), E = D.end(); I != E; ++I) {
+ ObjCInterfaceDecl *ForwardDecl = cast<ObjCInterfaceDecl>(*I);
+ if (I == D.begin()) {
+ // Translate to typedef's that forward reference structs with the same name
+ // as the class. As a convenience, we include the original declaration
+ // as a comment.
+ typedefString += "// @class ";
+ typedefString += ForwardDecl->getNameAsString();
+ typedefString += ";\n";
+ }
+ RewriteOneForwardClassDecl(ForwardDecl, typedefString);
+ }
+ DeclGroupRef::iterator I = D.begin();
+ RewriteForwardClassEpilogue(cast<ObjCInterfaceDecl>(*I), typedefString);
+}
+
+void RewriteObjC::RewriteForwardClassDecl(const SmallVectorImpl<Decl *> &D) {
+ std::string typedefString;
+ for (unsigned i = 0; i < D.size(); i++) {
+ ObjCInterfaceDecl *ForwardDecl = cast<ObjCInterfaceDecl>(D[i]);
+ if (i == 0) {
+ typedefString += "// @class ";
+ typedefString += ForwardDecl->getNameAsString();
+ typedefString += ";\n";
+ }
+ RewriteOneForwardClassDecl(ForwardDecl, typedefString);
+ }
+ RewriteForwardClassEpilogue(cast<ObjCInterfaceDecl>(D[0]), typedefString);
+}
+
+void RewriteObjC::RewriteMethodDeclaration(ObjCMethodDecl *Method) {
+ // When method is a synthesized one, such as a getter/setter there is
+ // nothing to rewrite.
+ if (Method->isImplicit())
+ return;
+ SourceLocation LocStart = Method->getLocStart();
+ SourceLocation LocEnd = Method->getLocEnd();
+
+ if (SM->getExpansionLineNumber(LocEnd) >
+ SM->getExpansionLineNumber(LocStart)) {
+ InsertText(LocStart, "#if 0\n");
+ ReplaceText(LocEnd, 1, ";\n#endif\n");
+ } else {
+ InsertText(LocStart, "// ");
+ }
+}
+
+void RewriteObjC::RewriteProperty(ObjCPropertyDecl *prop) {
+ SourceLocation Loc = prop->getAtLoc();
+
+ ReplaceText(Loc, 0, "// ");
+ // FIXME: handle properties that are declared across multiple lines.
+}
+
+void RewriteObjC::RewriteCategoryDecl(ObjCCategoryDecl *CatDecl) {
+ SourceLocation LocStart = CatDecl->getLocStart();
+
+ // FIXME: handle category headers that are declared across multiple lines.
+ ReplaceText(LocStart, 0, "// ");
+
+ for (auto *I : CatDecl->properties())
+ RewriteProperty(I);
+ for (auto *I : CatDecl->instance_methods())
+ RewriteMethodDeclaration(I);
+ for (auto *I : CatDecl->class_methods())
+ RewriteMethodDeclaration(I);
+
+ // Lastly, comment out the @end.
+ ReplaceText(CatDecl->getAtEndRange().getBegin(),
+ strlen("@end"), "/* @end */");
+}
+
+void RewriteObjC::RewriteProtocolDecl(ObjCProtocolDecl *PDecl) {
+ SourceLocation LocStart = PDecl->getLocStart();
+ assert(PDecl->isThisDeclarationADefinition());
+
+ // FIXME: handle protocol headers that are declared across multiple lines.
+ ReplaceText(LocStart, 0, "// ");
+
+ for (auto *I : PDecl->instance_methods())
+ RewriteMethodDeclaration(I);
+ for (auto *I : PDecl->class_methods())
+ RewriteMethodDeclaration(I);
+ for (auto *I : PDecl->properties())
+ RewriteProperty(I);
+
+ // Lastly, comment out the @end.
+ SourceLocation LocEnd = PDecl->getAtEndRange().getBegin();
+ ReplaceText(LocEnd, strlen("@end"), "/* @end */");
+
+ // Must comment out @optional/@required
+ const char *startBuf = SM->getCharacterData(LocStart);
+ const char *endBuf = SM->getCharacterData(LocEnd);
+ for (const char *p = startBuf; p < endBuf; p++) {
+ if (*p == '@' && !strncmp(p+1, "optional", strlen("optional"))) {
+ SourceLocation OptionalLoc = LocStart.getLocWithOffset(p-startBuf);
+ ReplaceText(OptionalLoc, strlen("@optional"), "/* @optional */");
+
+ }
+ else if (*p == '@' && !strncmp(p+1, "required", strlen("required"))) {
+ SourceLocation OptionalLoc = LocStart.getLocWithOffset(p-startBuf);
+ ReplaceText(OptionalLoc, strlen("@required"), "/* @required */");
+
+ }
+ }
+}
+
+void RewriteObjC::RewriteForwardProtocolDecl(DeclGroupRef D) {
+ SourceLocation LocStart = (*D.begin())->getLocStart();
+ if (LocStart.isInvalid())
+ llvm_unreachable("Invalid SourceLocation");
+ // FIXME: handle forward protocol that are declared across multiple lines.
+ ReplaceText(LocStart, 0, "// ");
+}
+
+void
+RewriteObjC::RewriteForwardProtocolDecl(const SmallVectorImpl<Decl *> &DG) {
+ SourceLocation LocStart = DG[0]->getLocStart();
+ if (LocStart.isInvalid())
+ llvm_unreachable("Invalid SourceLocation");
+ // FIXME: handle forward protocol that are declared across multiple lines.
+ ReplaceText(LocStart, 0, "// ");
+}
+
+void RewriteObjC::RewriteTypeIntoString(QualType T, std::string &ResultStr,
+ const FunctionType *&FPRetType) {
+ if (T->isObjCQualifiedIdType())
+ ResultStr += "id";
+ else if (T->isFunctionPointerType() ||
+ T->isBlockPointerType()) {
+ // needs special handling, since pointer-to-functions have special
+ // syntax (where a decaration models use).
+ QualType retType = T;
+ QualType PointeeTy;
+ if (const PointerType* PT = retType->getAs<PointerType>())
+ PointeeTy = PT->getPointeeType();
+ else if (const BlockPointerType *BPT = retType->getAs<BlockPointerType>())
+ PointeeTy = BPT->getPointeeType();
+ if ((FPRetType = PointeeTy->getAs<FunctionType>())) {
+ ResultStr +=
+ FPRetType->getReturnType().getAsString(Context->getPrintingPolicy());
+ ResultStr += "(*";
+ }
+ } else
+ ResultStr += T.getAsString(Context->getPrintingPolicy());
+}
+
+void RewriteObjC::RewriteObjCMethodDecl(const ObjCInterfaceDecl *IDecl,
+ ObjCMethodDecl *OMD,
+ std::string &ResultStr) {
+ //fprintf(stderr,"In RewriteObjCMethodDecl\n");
+ const FunctionType *FPRetType = nullptr;
+ ResultStr += "\nstatic ";
+ RewriteTypeIntoString(OMD->getReturnType(), ResultStr, FPRetType);
+ ResultStr += " ";
+
+ // Unique method name
+ std::string NameStr;
+
+ if (OMD->isInstanceMethod())
+ NameStr += "_I_";
+ else
+ NameStr += "_C_";
+
+ NameStr += IDecl->getNameAsString();
+ NameStr += "_";
+
+ if (ObjCCategoryImplDecl *CID =
+ dyn_cast<ObjCCategoryImplDecl>(OMD->getDeclContext())) {
+ NameStr += CID->getNameAsString();
+ NameStr += "_";
+ }
+ // Append selector names, replacing ':' with '_'
+ {
+ std::string selString = OMD->getSelector().getAsString();
+ int len = selString.size();
+ for (int i = 0; i < len; i++)
+ if (selString[i] == ':')
+ selString[i] = '_';
+ NameStr += selString;
+ }
+ // Remember this name for metadata emission
+ MethodInternalNames[OMD] = NameStr;
+ ResultStr += NameStr;
+
+ // Rewrite arguments
+ ResultStr += "(";
+
+ // invisible arguments
+ if (OMD->isInstanceMethod()) {
+ QualType selfTy = Context->getObjCInterfaceType(IDecl);
+ selfTy = Context->getPointerType(selfTy);
+ if (!LangOpts.MicrosoftExt) {
+ if (ObjCSynthesizedStructs.count(const_cast<ObjCInterfaceDecl*>(IDecl)))
+ ResultStr += "struct ";
+ }
+ // When rewriting for Microsoft, explicitly omit the structure name.
+ ResultStr += IDecl->getNameAsString();
+ ResultStr += " *";
+ }
+ else
+ ResultStr += Context->getObjCClassType().getAsString(
+ Context->getPrintingPolicy());
+
+ ResultStr += " self, ";
+ ResultStr += Context->getObjCSelType().getAsString(Context->getPrintingPolicy());
+ ResultStr += " _cmd";
+
+ // Method arguments.
+ for (const auto *PDecl : OMD->params()) {
+ ResultStr += ", ";
+ if (PDecl->getType()->isObjCQualifiedIdType()) {
+ ResultStr += "id ";
+ ResultStr += PDecl->getNameAsString();
+ } else {
+ std::string Name = PDecl->getNameAsString();
+ QualType QT = PDecl->getType();
+ // Make sure we convert "t (^)(...)" to "t (*)(...)".
+ (void)convertBlockPointerToFunctionPointer(QT);
+ QT.getAsStringInternal(Name, Context->getPrintingPolicy());
+ ResultStr += Name;
+ }
+ }
+ if (OMD->isVariadic())
+ ResultStr += ", ...";
+ ResultStr += ") ";
+
+ if (FPRetType) {
+ ResultStr += ")"; // close the precedence "scope" for "*".
+
+ // Now, emit the argument types (if any).
+ if (const FunctionProtoType *FT = dyn_cast<FunctionProtoType>(FPRetType)) {
+ ResultStr += "(";
+ for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) {
+ if (i) ResultStr += ", ";
+ std::string ParamStr =
+ FT->getParamType(i).getAsString(Context->getPrintingPolicy());
+ ResultStr += ParamStr;
+ }
+ if (FT->isVariadic()) {
+ if (FT->getNumParams())
+ ResultStr += ", ";
+ ResultStr += "...";
+ }
+ ResultStr += ")";
+ } else {
+ ResultStr += "()";
+ }
+ }
+}
+void RewriteObjC::RewriteImplementationDecl(Decl *OID) {
+ ObjCImplementationDecl *IMD = dyn_cast<ObjCImplementationDecl>(OID);
+ ObjCCategoryImplDecl *CID = dyn_cast<ObjCCategoryImplDecl>(OID);
+
+ InsertText(IMD ? IMD->getLocStart() : CID->getLocStart(), "// ");
+
+ for (auto *OMD : IMD ? IMD->instance_methods() : CID->instance_methods()) {
+ std::string ResultStr;
+ RewriteObjCMethodDecl(OMD->getClassInterface(), OMD, ResultStr);
+ SourceLocation LocStart = OMD->getLocStart();
+ SourceLocation LocEnd = OMD->getCompoundBody()->getLocStart();
+
+ const char *startBuf = SM->getCharacterData(LocStart);
+ const char *endBuf = SM->getCharacterData(LocEnd);
+ ReplaceText(LocStart, endBuf-startBuf, ResultStr);
+ }
+
+ for (auto *OMD : IMD ? IMD->class_methods() : CID->class_methods()) {
+ std::string ResultStr;
+ RewriteObjCMethodDecl(OMD->getClassInterface(), OMD, ResultStr);
+ SourceLocation LocStart = OMD->getLocStart();
+ SourceLocation LocEnd = OMD->getCompoundBody()->getLocStart();
+
+ const char *startBuf = SM->getCharacterData(LocStart);
+ const char *endBuf = SM->getCharacterData(LocEnd);
+ ReplaceText(LocStart, endBuf-startBuf, ResultStr);
+ }
+ for (auto *I : IMD ? IMD->property_impls() : CID->property_impls())
+ RewritePropertyImplDecl(I, IMD, CID);
+
+ InsertText(IMD ? IMD->getLocEnd() : CID->getLocEnd(), "// ");
+}
+
+void RewriteObjC::RewriteInterfaceDecl(ObjCInterfaceDecl *ClassDecl) {
+ std::string ResultStr;
+ if (!ObjCForwardDecls.count(ClassDecl->getCanonicalDecl())) {
+ // we haven't seen a forward decl - generate a typedef.
+ ResultStr = "#ifndef _REWRITER_typedef_";
+ ResultStr += ClassDecl->getNameAsString();
+ ResultStr += "\n";
+ ResultStr += "#define _REWRITER_typedef_";
+ ResultStr += ClassDecl->getNameAsString();
+ ResultStr += "\n";
+ ResultStr += "typedef struct objc_object ";
+ ResultStr += ClassDecl->getNameAsString();
+ ResultStr += ";\n#endif\n";
+ // Mark this typedef as having been generated.
+ ObjCForwardDecls.insert(ClassDecl->getCanonicalDecl());
+ }
+ RewriteObjCInternalStruct(ClassDecl, ResultStr);
+
+ for (auto *I : ClassDecl->properties())
+ RewriteProperty(I);
+ for (auto *I : ClassDecl->instance_methods())
+ RewriteMethodDeclaration(I);
+ for (auto *I : ClassDecl->class_methods())
+ RewriteMethodDeclaration(I);
+
+ // Lastly, comment out the @end.
+ ReplaceText(ClassDecl->getAtEndRange().getBegin(), strlen("@end"),
+ "/* @end */");
+}
+
+Stmt *RewriteObjC::RewritePropertyOrImplicitSetter(PseudoObjectExpr *PseudoOp) {
+ SourceRange OldRange = PseudoOp->getSourceRange();
+
+ // We just magically know some things about the structure of this
+ // expression.
+ ObjCMessageExpr *OldMsg =
+ cast<ObjCMessageExpr>(PseudoOp->getSemanticExpr(
+ PseudoOp->getNumSemanticExprs() - 1));
+
+ // Because the rewriter doesn't allow us to rewrite rewritten code,
+ // we need to suppress rewriting the sub-statements.
+ Expr *Base, *RHS;
+ {
+ DisableReplaceStmtScope S(*this);
+
+ // Rebuild the base expression if we have one.
+ Base = nullptr;
+ if (OldMsg->getReceiverKind() == ObjCMessageExpr::Instance) {
+ Base = OldMsg->getInstanceReceiver();
+ Base = cast<OpaqueValueExpr>(Base)->getSourceExpr();
+ Base = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Base));
+ }
+
+ // Rebuild the RHS.
+ RHS = cast<BinaryOperator>(PseudoOp->getSyntacticForm())->getRHS();
+ RHS = cast<OpaqueValueExpr>(RHS)->getSourceExpr();
+ RHS = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(RHS));
+ }
+
+ // TODO: avoid this copy.
+ SmallVector<SourceLocation, 1> SelLocs;
+ OldMsg->getSelectorLocs(SelLocs);
+
+ ObjCMessageExpr *NewMsg = nullptr;
+ switch (OldMsg->getReceiverKind()) {
+ case ObjCMessageExpr::Class:
+ NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
+ OldMsg->getValueKind(),
+ OldMsg->getLeftLoc(),
+ OldMsg->getClassReceiverTypeInfo(),
+ OldMsg->getSelector(),
+ SelLocs,
+ OldMsg->getMethodDecl(),
+ RHS,
+ OldMsg->getRightLoc(),
+ OldMsg->isImplicit());
+ break;
+
+ case ObjCMessageExpr::Instance:
+ NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
+ OldMsg->getValueKind(),
+ OldMsg->getLeftLoc(),
+ Base,
+ OldMsg->getSelector(),
+ SelLocs,
+ OldMsg->getMethodDecl(),
+ RHS,
+ OldMsg->getRightLoc(),
+ OldMsg->isImplicit());
+ break;
+
+ case ObjCMessageExpr::SuperClass:
+ case ObjCMessageExpr::SuperInstance:
+ NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
+ OldMsg->getValueKind(),
+ OldMsg->getLeftLoc(),
+ OldMsg->getSuperLoc(),
+ OldMsg->getReceiverKind() == ObjCMessageExpr::SuperInstance,
+ OldMsg->getSuperType(),
+ OldMsg->getSelector(),
+ SelLocs,
+ OldMsg->getMethodDecl(),
+ RHS,
+ OldMsg->getRightLoc(),
+ OldMsg->isImplicit());
+ break;
+ }
+
+ Stmt *Replacement = SynthMessageExpr(NewMsg);
+ ReplaceStmtWithRange(PseudoOp, Replacement, OldRange);
+ return Replacement;
+}
+
+Stmt *RewriteObjC::RewritePropertyOrImplicitGetter(PseudoObjectExpr *PseudoOp) {
+ SourceRange OldRange = PseudoOp->getSourceRange();
+
+ // We just magically know some things about the structure of this
+ // expression.
+ ObjCMessageExpr *OldMsg =
+ cast<ObjCMessageExpr>(PseudoOp->getResultExpr()->IgnoreImplicit());
+
+ // Because the rewriter doesn't allow us to rewrite rewritten code,
+ // we need to suppress rewriting the sub-statements.
+ Expr *Base = nullptr;
+ {
+ DisableReplaceStmtScope S(*this);
+
+ // Rebuild the base expression if we have one.
+ if (OldMsg->getReceiverKind() == ObjCMessageExpr::Instance) {
+ Base = OldMsg->getInstanceReceiver();
+ Base = cast<OpaqueValueExpr>(Base)->getSourceExpr();
+ Base = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(Base));
+ }
+ }
+
+ // Intentionally empty.
+ SmallVector<SourceLocation, 1> SelLocs;
+ SmallVector<Expr*, 1> Args;
+
+ ObjCMessageExpr *NewMsg = nullptr;
+ switch (OldMsg->getReceiverKind()) {
+ case ObjCMessageExpr::Class:
+ NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
+ OldMsg->getValueKind(),
+ OldMsg->getLeftLoc(),
+ OldMsg->getClassReceiverTypeInfo(),
+ OldMsg->getSelector(),
+ SelLocs,
+ OldMsg->getMethodDecl(),
+ Args,
+ OldMsg->getRightLoc(),
+ OldMsg->isImplicit());
+ break;
+
+ case ObjCMessageExpr::Instance:
+ NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
+ OldMsg->getValueKind(),
+ OldMsg->getLeftLoc(),
+ Base,
+ OldMsg->getSelector(),
+ SelLocs,
+ OldMsg->getMethodDecl(),
+ Args,
+ OldMsg->getRightLoc(),
+ OldMsg->isImplicit());
+ break;
+
+ case ObjCMessageExpr::SuperClass:
+ case ObjCMessageExpr::SuperInstance:
+ NewMsg = ObjCMessageExpr::Create(*Context, OldMsg->getType(),
+ OldMsg->getValueKind(),
+ OldMsg->getLeftLoc(),
+ OldMsg->getSuperLoc(),
+ OldMsg->getReceiverKind() == ObjCMessageExpr::SuperInstance,
+ OldMsg->getSuperType(),
+ OldMsg->getSelector(),
+ SelLocs,
+ OldMsg->getMethodDecl(),
+ Args,
+ OldMsg->getRightLoc(),
+ OldMsg->isImplicit());
+ break;
+ }
+
+ Stmt *Replacement = SynthMessageExpr(NewMsg);
+ ReplaceStmtWithRange(PseudoOp, Replacement, OldRange);
+ return Replacement;
+}
+
+/// SynthCountByEnumWithState - To print:
+/// ((unsigned int (*)
+/// (id, SEL, struct __objcFastEnumerationState *, id *, unsigned int))
+/// (void *)objc_msgSend)((id)l_collection,
+/// sel_registerName(
+/// "countByEnumeratingWithState:objects:count:"),
+/// &enumState,
+/// (id *)__rw_items, (unsigned int)16)
+///
+void RewriteObjC::SynthCountByEnumWithState(std::string &buf) {
+ buf += "((unsigned int (*) (id, SEL, struct __objcFastEnumerationState *, "
+ "id *, unsigned int))(void *)objc_msgSend)";
+ buf += "\n\t\t";
+ buf += "((id)l_collection,\n\t\t";
+ buf += "sel_registerName(\"countByEnumeratingWithState:objects:count:\"),";
+ buf += "\n\t\t";
+ buf += "&enumState, "
+ "(id *)__rw_items, (unsigned int)16)";
+}
+
+/// RewriteBreakStmt - Rewrite for a break-stmt inside an ObjC2's foreach
+/// statement to exit to its outer synthesized loop.
+///
+Stmt *RewriteObjC::RewriteBreakStmt(BreakStmt *S) {
+ if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
+ return S;
+ // replace break with goto __break_label
+ std::string buf;
+
+ SourceLocation startLoc = S->getLocStart();
+ buf = "goto __break_label_";
+ buf += utostr(ObjCBcLabelNo.back());
+ ReplaceText(startLoc, strlen("break"), buf);
+
+ return nullptr;
+}
+
+/// RewriteContinueStmt - Rewrite for a continue-stmt inside an ObjC2's foreach
+/// statement to continue with its inner synthesized loop.
+///
+Stmt *RewriteObjC::RewriteContinueStmt(ContinueStmt *S) {
+ if (Stmts.empty() || !isa<ObjCForCollectionStmt>(Stmts.back()))
+ return S;
+ // replace continue with goto __continue_label
+ std::string buf;
+
+ SourceLocation startLoc = S->getLocStart();
+ buf = "goto __continue_label_";
+ buf += utostr(ObjCBcLabelNo.back());
+ ReplaceText(startLoc, strlen("continue"), buf);
+
+ return nullptr;
+}
+
+/// RewriteObjCForCollectionStmt - Rewriter for ObjC2's foreach statement.
+/// It rewrites:
+/// for ( type elem in collection) { stmts; }
+
+/// Into:
+/// {
+/// type elem;
+/// struct __objcFastEnumerationState enumState = { 0 };
+/// id __rw_items[16];
+/// id l_collection = (id)collection;
+/// unsigned long limit = [l_collection countByEnumeratingWithState:&enumState
+/// objects:__rw_items count:16];
+/// if (limit) {
+/// unsigned long startMutations = *enumState.mutationsPtr;
+/// do {
+/// unsigned long counter = 0;
+/// do {
+/// if (startMutations != *enumState.mutationsPtr)
+/// objc_enumerationMutation(l_collection);
+/// elem = (type)enumState.itemsPtr[counter++];
+/// stmts;
+/// __continue_label: ;
+/// } while (counter < limit);
+/// } while (limit = [l_collection countByEnumeratingWithState:&enumState
+/// objects:__rw_items count:16]);
+/// elem = nil;
+/// __break_label: ;
+/// }
+/// else
+/// elem = nil;
+/// }
+///
+Stmt *RewriteObjC::RewriteObjCForCollectionStmt(ObjCForCollectionStmt *S,
+ SourceLocation OrigEnd) {
+ assert(!Stmts.empty() && "ObjCForCollectionStmt - Statement stack empty");
+ assert(isa<ObjCForCollectionStmt>(Stmts.back()) &&
+ "ObjCForCollectionStmt Statement stack mismatch");
+ assert(!ObjCBcLabelNo.empty() &&
+ "ObjCForCollectionStmt - Label No stack empty");
+
+ SourceLocation startLoc = S->getLocStart();
+ const char *startBuf = SM->getCharacterData(startLoc);
+ StringRef elementName;
+ std::string elementTypeAsString;
+ std::string buf;
+ buf = "\n{\n\t";
+ if (DeclStmt *DS = dyn_cast<DeclStmt>(S->getElement())) {
+ // type elem;
+ NamedDecl* D = cast<NamedDecl>(DS->getSingleDecl());
+ QualType ElementType = cast<ValueDecl>(D)->getType();
+ if (ElementType->isObjCQualifiedIdType() ||
+ ElementType->isObjCQualifiedInterfaceType())
+ // Simply use 'id' for all qualified types.
+ elementTypeAsString = "id";
+ else
+ elementTypeAsString = ElementType.getAsString(Context->getPrintingPolicy());
+ buf += elementTypeAsString;
+ buf += " ";
+ elementName = D->getName();
+ buf += elementName;
+ buf += ";\n\t";
+ }
+ else {
+ DeclRefExpr *DR = cast<DeclRefExpr>(S->getElement());
+ elementName = DR->getDecl()->getName();
+ ValueDecl *VD = cast<ValueDecl>(DR->getDecl());
+ if (VD->getType()->isObjCQualifiedIdType() ||
+ VD->getType()->isObjCQualifiedInterfaceType())
+ // Simply use 'id' for all qualified types.
+ elementTypeAsString = "id";
+ else
+ elementTypeAsString = VD->getType().getAsString(Context->getPrintingPolicy());
+ }
+
+ // struct __objcFastEnumerationState enumState = { 0 };
+ buf += "struct __objcFastEnumerationState enumState = { 0 };\n\t";
+ // id __rw_items[16];
+ buf += "id __rw_items[16];\n\t";
+ // id l_collection = (id)
+ buf += "id l_collection = (id)";
+ // Find start location of 'collection' the hard way!
+ const char *startCollectionBuf = startBuf;
+ startCollectionBuf += 3; // skip 'for'
+ startCollectionBuf = strchr(startCollectionBuf, '(');
+ startCollectionBuf++; // skip '('
+ // find 'in' and skip it.
+ while (*startCollectionBuf != ' ' ||
+ *(startCollectionBuf+1) != 'i' || *(startCollectionBuf+2) != 'n' ||
+ (*(startCollectionBuf+3) != ' ' &&
+ *(startCollectionBuf+3) != '[' && *(startCollectionBuf+3) != '('))
+ startCollectionBuf++;
+ startCollectionBuf += 3;
+
+ // Replace: "for (type element in" with string constructed thus far.
+ ReplaceText(startLoc, startCollectionBuf - startBuf, buf);
+ // Replace ')' in for '(' type elem in collection ')' with ';'
+ SourceLocation rightParenLoc = S->getRParenLoc();
+ const char *rparenBuf = SM->getCharacterData(rightParenLoc);
+ SourceLocation lparenLoc = startLoc.getLocWithOffset(rparenBuf-startBuf);
+ buf = ";\n\t";
+
+ // unsigned long limit = [l_collection countByEnumeratingWithState:&enumState
+ // objects:__rw_items count:16];
+ // which is synthesized into:
+ // unsigned int limit =
+ // ((unsigned int (*)
+ // (id, SEL, struct __objcFastEnumerationState *, id *, unsigned int))
+ // (void *)objc_msgSend)((id)l_collection,
+ // sel_registerName(
+ // "countByEnumeratingWithState:objects:count:"),
+ // (struct __objcFastEnumerationState *)&state,
+ // (id *)__rw_items, (unsigned int)16);
+ buf += "unsigned long limit =\n\t\t";
+ SynthCountByEnumWithState(buf);
+ buf += ";\n\t";
+ /// if (limit) {
+ /// unsigned long startMutations = *enumState.mutationsPtr;
+ /// do {
+ /// unsigned long counter = 0;
+ /// do {
+ /// if (startMutations != *enumState.mutationsPtr)
+ /// objc_enumerationMutation(l_collection);
+ /// elem = (type)enumState.itemsPtr[counter++];
+ buf += "if (limit) {\n\t";
+ buf += "unsigned long startMutations = *enumState.mutationsPtr;\n\t";
+ buf += "do {\n\t\t";
+ buf += "unsigned long counter = 0;\n\t\t";
+ buf += "do {\n\t\t\t";
+ buf += "if (startMutations != *enumState.mutationsPtr)\n\t\t\t\t";
+ buf += "objc_enumerationMutation(l_collection);\n\t\t\t";
+ buf += elementName;
+ buf += " = (";
+ buf += elementTypeAsString;
+ buf += ")enumState.itemsPtr[counter++];";
+ // Replace ')' in for '(' type elem in collection ')' with all of these.
+ ReplaceText(lparenLoc, 1, buf);
+
+ /// __continue_label: ;
+ /// } while (counter < limit);
+ /// } while (limit = [l_collection countByEnumeratingWithState:&enumState
+ /// objects:__rw_items count:16]);
+ /// elem = nil;
+ /// __break_label: ;
+ /// }
+ /// else
+ /// elem = nil;
+ /// }
+ ///
+ buf = ";\n\t";
+ buf += "__continue_label_";
+ buf += utostr(ObjCBcLabelNo.back());
+ buf += ": ;";
+ buf += "\n\t\t";
+ buf += "} while (counter < limit);\n\t";
+ buf += "} while (limit = ";
+ SynthCountByEnumWithState(buf);
+ buf += ");\n\t";
+ buf += elementName;
+ buf += " = ((";
+ buf += elementTypeAsString;
+ buf += ")0);\n\t";
+ buf += "__break_label_";
+ buf += utostr(ObjCBcLabelNo.back());
+ buf += ": ;\n\t";
+ buf += "}\n\t";
+ buf += "else\n\t\t";
+ buf += elementName;
+ buf += " = ((";
+ buf += elementTypeAsString;
+ buf += ")0);\n\t";
+ buf += "}\n";
+
+ // Insert all these *after* the statement body.
+ // FIXME: If this should support Obj-C++, support CXXTryStmt
+ if (isa<CompoundStmt>(S->getBody())) {
+ SourceLocation endBodyLoc = OrigEnd.getLocWithOffset(1);
+ InsertText(endBodyLoc, buf);
+ } else {
+ /* Need to treat single statements specially. For example:
+ *
+ * for (A *a in b) if (stuff()) break;
+ * for (A *a in b) xxxyy;
+ *
+ * The following code simply scans ahead to the semi to find the actual end.
+ */
+ const char *stmtBuf = SM->getCharacterData(OrigEnd);
+ const char *semiBuf = strchr(stmtBuf, ';');
+ assert(semiBuf && "Can't find ';'");
+ SourceLocation endBodyLoc = OrigEnd.getLocWithOffset(semiBuf-stmtBuf+1);
+ InsertText(endBodyLoc, buf);
+ }
+ Stmts.pop_back();
+ ObjCBcLabelNo.pop_back();
+ return nullptr;
+}
+
+/// RewriteObjCSynchronizedStmt -
+/// This routine rewrites @synchronized(expr) stmt;
+/// into:
+/// objc_sync_enter(expr);
+/// @try stmt @finally { objc_sync_exit(expr); }
+///
+Stmt *RewriteObjC::RewriteObjCSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
+ // Get the start location and compute the semi location.
+ SourceLocation startLoc = S->getLocStart();
+ const char *startBuf = SM->getCharacterData(startLoc);
+
+ assert((*startBuf == '@') && "bogus @synchronized location");
+
+ std::string buf;
+ buf = "objc_sync_enter((id)";
+ const char *lparenBuf = startBuf;
+ while (*lparenBuf != '(') lparenBuf++;
+ ReplaceText(startLoc, lparenBuf-startBuf+1, buf);
+ // We can't use S->getSynchExpr()->getLocEnd() to find the end location, since
+ // the sync expression is typically a message expression that's already
+ // been rewritten! (which implies the SourceLocation's are invalid).
+ SourceLocation endLoc = S->getSynchBody()->getLocStart();
+ const char *endBuf = SM->getCharacterData(endLoc);
+ while (*endBuf != ')') endBuf--;
+ SourceLocation rparenLoc = startLoc.getLocWithOffset(endBuf-startBuf);
+ buf = ");\n";
+ // declare a new scope with two variables, _stack and _rethrow.
+ buf += "/* @try scope begin */ \n{ struct _objc_exception_data {\n";
+ buf += "int buf[18/*32-bit i386*/];\n";
+ buf += "char *pointers[4];} _stack;\n";
+ buf += "id volatile _rethrow = 0;\n";
+ buf += "objc_exception_try_enter(&_stack);\n";
+ buf += "if (!_setjmp(_stack.buf)) /* @try block continue */\n";
+ ReplaceText(rparenLoc, 1, buf);
+ startLoc = S->getSynchBody()->getLocEnd();
+ startBuf = SM->getCharacterData(startLoc);
+
+ assert((*startBuf == '}') && "bogus @synchronized block");
+ SourceLocation lastCurlyLoc = startLoc;
+ buf = "}\nelse {\n";
+ buf += " _rethrow = objc_exception_extract(&_stack);\n";
+ buf += "}\n";
+ buf += "{ /* implicit finally clause */\n";
+ buf += " if (!_rethrow) objc_exception_try_exit(&_stack);\n";
+
+ std::string syncBuf;
+ syncBuf += " objc_sync_exit(";
+
+ Expr *syncExpr = S->getSynchExpr();
+ CastKind CK = syncExpr->getType()->isObjCObjectPointerType()
+ ? CK_BitCast :
+ syncExpr->getType()->isBlockPointerType()
+ ? CK_BlockPointerToObjCPointerCast
+ : CK_CPointerToObjCPointerCast;
+ syncExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
+ CK, syncExpr);
+ std::string syncExprBufS;
+ llvm::raw_string_ostream syncExprBuf(syncExprBufS);
+ assert(syncExpr != nullptr && "Expected non-null Expr");
+ syncExpr->printPretty(syncExprBuf, nullptr, PrintingPolicy(LangOpts));
+ syncBuf += syncExprBuf.str();
+ syncBuf += ");";
+
+ buf += syncBuf;
+ buf += "\n if (_rethrow) objc_exception_throw(_rethrow);\n";
+ buf += "}\n";
+ buf += "}";
+
+ ReplaceText(lastCurlyLoc, 1, buf);
+
+ bool hasReturns = false;
+ HasReturnStmts(S->getSynchBody(), hasReturns);
+ if (hasReturns)
+ RewriteSyncReturnStmts(S->getSynchBody(), syncBuf);
+
+ return nullptr;
+}
+
+void RewriteObjC::WarnAboutReturnGotoStmts(Stmt *S)
+{
+ // Perform a bottom up traversal of all children.
+ for (Stmt::child_range CI = S->children(); CI; ++CI)
+ if (*CI)
+ WarnAboutReturnGotoStmts(*CI);
+
+ if (isa<ReturnStmt>(S) || isa<GotoStmt>(S)) {
+ Diags.Report(Context->getFullLoc(S->getLocStart()),
+ TryFinallyContainsReturnDiag);
+ }
+ return;
+}
+
+void RewriteObjC::HasReturnStmts(Stmt *S, bool &hasReturns)
+{
+ // Perform a bottom up traversal of all children.
+ for (Stmt::child_range CI = S->children(); CI; ++CI)
+ if (*CI)
+ HasReturnStmts(*CI, hasReturns);
+
+ if (isa<ReturnStmt>(S))
+ hasReturns = true;
+ return;
+}
+
+void RewriteObjC::RewriteTryReturnStmts(Stmt *S) {
+ // Perform a bottom up traversal of all children.
+ for (Stmt::child_range CI = S->children(); CI; ++CI)
+ if (*CI) {
+ RewriteTryReturnStmts(*CI);
+ }
+ if (isa<ReturnStmt>(S)) {
+ SourceLocation startLoc = S->getLocStart();
+ const char *startBuf = SM->getCharacterData(startLoc);
+
+ const char *semiBuf = strchr(startBuf, ';');
+ assert((*semiBuf == ';') && "RewriteTryReturnStmts: can't find ';'");
+ SourceLocation onePastSemiLoc = startLoc.getLocWithOffset(semiBuf-startBuf+1);
+
+ std::string buf;
+ buf = "{ objc_exception_try_exit(&_stack); return";
+
+ ReplaceText(startLoc, 6, buf);
+ InsertText(onePastSemiLoc, "}");
+ }
+ return;
+}
+
+void RewriteObjC::RewriteSyncReturnStmts(Stmt *S, std::string syncExitBuf) {
+ // Perform a bottom up traversal of all children.
+ for (Stmt::child_range CI = S->children(); CI; ++CI)
+ if (*CI) {
+ RewriteSyncReturnStmts(*CI, syncExitBuf);
+ }
+ if (isa<ReturnStmt>(S)) {
+ SourceLocation startLoc = S->getLocStart();
+ const char *startBuf = SM->getCharacterData(startLoc);
+
+ const char *semiBuf = strchr(startBuf, ';');
+ assert((*semiBuf == ';') && "RewriteSyncReturnStmts: can't find ';'");
+ SourceLocation onePastSemiLoc = startLoc.getLocWithOffset(semiBuf-startBuf+1);
+
+ std::string buf;
+ buf = "{ objc_exception_try_exit(&_stack);";
+ buf += syncExitBuf;
+ buf += " return";
+
+ ReplaceText(startLoc, 6, buf);
+ InsertText(onePastSemiLoc, "}");
+ }
+ return;
+}
+
+Stmt *RewriteObjC::RewriteObjCTryStmt(ObjCAtTryStmt *S) {
+ // Get the start location and compute the semi location.
+ SourceLocation startLoc = S->getLocStart();
+ const char *startBuf = SM->getCharacterData(startLoc);
+
+ assert((*startBuf == '@') && "bogus @try location");
+
+ std::string buf;
+ // declare a new scope with two variables, _stack and _rethrow.
+ buf = "/* @try scope begin */ { struct _objc_exception_data {\n";
+ buf += "int buf[18/*32-bit i386*/];\n";
+ buf += "char *pointers[4];} _stack;\n";
+ buf += "id volatile _rethrow = 0;\n";
+ buf += "objc_exception_try_enter(&_stack);\n";
+ buf += "if (!_setjmp(_stack.buf)) /* @try block continue */\n";
+
+ ReplaceText(startLoc, 4, buf);
+
+ startLoc = S->getTryBody()->getLocEnd();
+ startBuf = SM->getCharacterData(startLoc);
+
+ assert((*startBuf == '}') && "bogus @try block");
+
+ SourceLocation lastCurlyLoc = startLoc;
+ if (S->getNumCatchStmts()) {
+ startLoc = startLoc.getLocWithOffset(1);
+ buf = " /* @catch begin */ else {\n";
+ buf += " id _caught = objc_exception_extract(&_stack);\n";
+ buf += " objc_exception_try_enter (&_stack);\n";
+ buf += " if (_setjmp(_stack.buf))\n";
+ buf += " _rethrow = objc_exception_extract(&_stack);\n";
+ buf += " else { /* @catch continue */";
+
+ InsertText(startLoc, buf);
+ } else { /* no catch list */
+ buf = "}\nelse {\n";
+ buf += " _rethrow = objc_exception_extract(&_stack);\n";
+ buf += "}";
+ ReplaceText(lastCurlyLoc, 1, buf);
+ }
+ Stmt *lastCatchBody = nullptr;
+ for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I) {
+ ObjCAtCatchStmt *Catch = S->getCatchStmt(I);
+ VarDecl *catchDecl = Catch->getCatchParamDecl();
+
+ if (I == 0)
+ buf = "if ("; // we are generating code for the first catch clause
+ else
+ buf = "else if (";
+ startLoc = Catch->getLocStart();
+ startBuf = SM->getCharacterData(startLoc);
+
+ assert((*startBuf == '@') && "bogus @catch location");
+
+ const char *lParenLoc = strchr(startBuf, '(');
+
+ if (Catch->hasEllipsis()) {
+ // Now rewrite the body...
+ lastCatchBody = Catch->getCatchBody();
+ SourceLocation bodyLoc = lastCatchBody->getLocStart();
+ const char *bodyBuf = SM->getCharacterData(bodyLoc);
+ assert(*SM->getCharacterData(Catch->getRParenLoc()) == ')' &&
+ "bogus @catch paren location");
+ assert((*bodyBuf == '{') && "bogus @catch body location");
+
+ buf += "1) { id _tmp = _caught;";
+ Rewrite.ReplaceText(startLoc, bodyBuf-startBuf+1, buf);
+ } else if (catchDecl) {
+ QualType t = catchDecl->getType();
+ if (t == Context->getObjCIdType()) {
+ buf += "1) { ";
+ ReplaceText(startLoc, lParenLoc-startBuf+1, buf);
+ } else if (const ObjCObjectPointerType *Ptr =
+ t->getAs<ObjCObjectPointerType>()) {
+ // Should be a pointer to a class.
+ ObjCInterfaceDecl *IDecl = Ptr->getObjectType()->getInterface();
+ if (IDecl) {
+ buf += "objc_exception_match((struct objc_class *)objc_getClass(\"";
+ buf += IDecl->getNameAsString();
+ buf += "\"), (struct objc_object *)_caught)) { ";
+ ReplaceText(startLoc, lParenLoc-startBuf+1, buf);
+ }
+ }
+ // Now rewrite the body...
+ lastCatchBody = Catch->getCatchBody();
+ SourceLocation rParenLoc = Catch->getRParenLoc();
+ SourceLocation bodyLoc = lastCatchBody->getLocStart();
+ const char *bodyBuf = SM->getCharacterData(bodyLoc);
+ const char *rParenBuf = SM->getCharacterData(rParenLoc);
+ assert((*rParenBuf == ')') && "bogus @catch paren location");
+ assert((*bodyBuf == '{') && "bogus @catch body location");
+
+ // Here we replace ") {" with "= _caught;" (which initializes and
+ // declares the @catch parameter).
+ ReplaceText(rParenLoc, bodyBuf-rParenBuf+1, " = _caught;");
+ } else {
+ llvm_unreachable("@catch rewrite bug");
+ }
+ }
+ // Complete the catch list...
+ if (lastCatchBody) {
+ SourceLocation bodyLoc = lastCatchBody->getLocEnd();
+ assert(*SM->getCharacterData(bodyLoc) == '}' &&
+ "bogus @catch body location");
+
+ // Insert the last (implicit) else clause *before* the right curly brace.
+ bodyLoc = bodyLoc.getLocWithOffset(-1);
+ buf = "} /* last catch end */\n";
+ buf += "else {\n";
+ buf += " _rethrow = _caught;\n";
+ buf += " objc_exception_try_exit(&_stack);\n";
+ buf += "} } /* @catch end */\n";
+ if (!S->getFinallyStmt())
+ buf += "}\n";
+ InsertText(bodyLoc, buf);
+
+ // Set lastCurlyLoc
+ lastCurlyLoc = lastCatchBody->getLocEnd();
+ }
+ if (ObjCAtFinallyStmt *finalStmt = S->getFinallyStmt()) {
+ startLoc = finalStmt->getLocStart();
+ startBuf = SM->getCharacterData(startLoc);
+ assert((*startBuf == '@') && "bogus @finally start");
+
+ ReplaceText(startLoc, 8, "/* @finally */");
+
+ Stmt *body = finalStmt->getFinallyBody();
+ SourceLocation startLoc = body->getLocStart();
+ SourceLocation endLoc = body->getLocEnd();
+ assert(*SM->getCharacterData(startLoc) == '{' &&
+ "bogus @finally body location");
+ assert(*SM->getCharacterData(endLoc) == '}' &&
+ "bogus @finally body location");
+
+ startLoc = startLoc.getLocWithOffset(1);
+ InsertText(startLoc, " if (!_rethrow) objc_exception_try_exit(&_stack);\n");
+ endLoc = endLoc.getLocWithOffset(-1);
+ InsertText(endLoc, " if (_rethrow) objc_exception_throw(_rethrow);\n");
+
+ // Set lastCurlyLoc
+ lastCurlyLoc = body->getLocEnd();
+
+ // Now check for any return/continue/go statements within the @try.
+ WarnAboutReturnGotoStmts(S->getTryBody());
+ } else { /* no finally clause - make sure we synthesize an implicit one */
+ buf = "{ /* implicit finally clause */\n";
+ buf += " if (!_rethrow) objc_exception_try_exit(&_stack);\n";
+ buf += " if (_rethrow) objc_exception_throw(_rethrow);\n";
+ buf += "}";
+ ReplaceText(lastCurlyLoc, 1, buf);
+
+ // Now check for any return/continue/go statements within the @try.
+ // The implicit finally clause won't called if the @try contains any
+ // jump statements.
+ bool hasReturns = false;
+ HasReturnStmts(S->getTryBody(), hasReturns);
+ if (hasReturns)
+ RewriteTryReturnStmts(S->getTryBody());
+ }
+ // Now emit the final closing curly brace...
+ lastCurlyLoc = lastCurlyLoc.getLocWithOffset(1);
+ InsertText(lastCurlyLoc, " } /* @try scope end */\n");
+ return nullptr;
+}
+
+// This can't be done with ReplaceStmt(S, ThrowExpr), since
+// the throw expression is typically a message expression that's already
+// been rewritten! (which implies the SourceLocation's are invalid).
+Stmt *RewriteObjC::RewriteObjCThrowStmt(ObjCAtThrowStmt *S) {
+ // Get the start location and compute the semi location.
+ SourceLocation startLoc = S->getLocStart();
+ const char *startBuf = SM->getCharacterData(startLoc);
+
+ assert((*startBuf == '@') && "bogus @throw location");
+
+ std::string buf;
+ /* void objc_exception_throw(id) __attribute__((noreturn)); */
+ if (S->getThrowExpr())
+ buf = "objc_exception_throw(";
+ else // add an implicit argument
+ buf = "objc_exception_throw(_caught";
+
+ // handle "@ throw" correctly.
+ const char *wBuf = strchr(startBuf, 'w');
+ assert((*wBuf == 'w') && "@throw: can't find 'w'");
+ ReplaceText(startLoc, wBuf-startBuf+1, buf);
+
+ const char *semiBuf = strchr(startBuf, ';');
+ assert((*semiBuf == ';') && "@throw: can't find ';'");
+ SourceLocation semiLoc = startLoc.getLocWithOffset(semiBuf-startBuf);
+ ReplaceText(semiLoc, 1, ");");
+ return nullptr;
+}
+
+Stmt *RewriteObjC::RewriteAtEncode(ObjCEncodeExpr *Exp) {
+ // Create a new string expression.
+ std::string StrEncoding;
+ Context->getObjCEncodingForType(Exp->getEncodedType(), StrEncoding);
+ Expr *Replacement = getStringLiteral(StrEncoding);
+ ReplaceStmt(Exp, Replacement);
+
+ // Replace this subexpr in the parent.
+ // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
+ return Replacement;
+}
+
+Stmt *RewriteObjC::RewriteAtSelector(ObjCSelectorExpr *Exp) {
+ if (!SelGetUidFunctionDecl)
+ SynthSelGetUidFunctionDecl();
+ assert(SelGetUidFunctionDecl && "Can't find sel_registerName() decl");
+ // Create a call to sel_registerName("selName").
+ SmallVector<Expr*, 8> SelExprs;
+ SelExprs.push_back(getStringLiteral(Exp->getSelector().getAsString()));
+ CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
+ &SelExprs[0], SelExprs.size());
+ ReplaceStmt(Exp, SelExp);
+ // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
+ return SelExp;
+}
+
+CallExpr *RewriteObjC::SynthesizeCallToFunctionDecl(
+ FunctionDecl *FD, Expr **args, unsigned nargs, SourceLocation StartLoc,
+ SourceLocation EndLoc) {
+ // Get the type, we will need to reference it in a couple spots.
+ QualType msgSendType = FD->getType();
+
+ // Create a reference to the objc_msgSend() declaration.
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(FD, false, msgSendType,
+ VK_LValue, SourceLocation());
+
+ // Now, we cast the reference to a pointer to the objc_msgSend type.
+ QualType pToFunc = Context->getPointerType(msgSendType);
+ ImplicitCastExpr *ICE =
+ ImplicitCastExpr::Create(*Context, pToFunc, CK_FunctionToPointerDecay,
+ DRE, nullptr, VK_RValue);
+
+ const FunctionType *FT = msgSendType->getAs<FunctionType>();
+
+ CallExpr *Exp =
+ new (Context) CallExpr(*Context, ICE, llvm::makeArrayRef(args, nargs),
+ FT->getCallResultType(*Context),
+ VK_RValue, EndLoc);
+ return Exp;
+}
+
+static bool scanForProtocolRefs(const char *startBuf, const char *endBuf,
+ const char *&startRef, const char *&endRef) {
+ while (startBuf < endBuf) {
+ if (*startBuf == '<')
+ startRef = startBuf; // mark the start.
+ if (*startBuf == '>') {
+ if (startRef && *startRef == '<') {
+ endRef = startBuf; // mark the end.
+ return true;
+ }
+ return false;
+ }
+ startBuf++;
+ }
+ return false;
+}
+
+static void scanToNextArgument(const char *&argRef) {
+ int angle = 0;
+ while (*argRef != ')' && (*argRef != ',' || angle > 0)) {
+ if (*argRef == '<')
+ angle++;
+ else if (*argRef == '>')
+ angle--;
+ argRef++;
+ }
+ assert(angle == 0 && "scanToNextArgument - bad protocol type syntax");
+}
+
+bool RewriteObjC::needToScanForQualifiers(QualType T) {
+ if (T->isObjCQualifiedIdType())
+ return true;
+ if (const PointerType *PT = T->getAs<PointerType>()) {
+ if (PT->getPointeeType()->isObjCQualifiedIdType())
+ return true;
+ }
+ if (T->isObjCObjectPointerType()) {
+ T = T->getPointeeType();
+ return T->isObjCQualifiedInterfaceType();
+ }
+ if (T->isArrayType()) {
+ QualType ElemTy = Context->getBaseElementType(T);
+ return needToScanForQualifiers(ElemTy);
+ }
+ return false;
+}
+
+void RewriteObjC::RewriteObjCQualifiedInterfaceTypes(Expr *E) {
+ QualType Type = E->getType();
+ if (needToScanForQualifiers(Type)) {
+ SourceLocation Loc, EndLoc;
+
+ if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E)) {
+ Loc = ECE->getLParenLoc();
+ EndLoc = ECE->getRParenLoc();
+ } else {
+ Loc = E->getLocStart();
+ EndLoc = E->getLocEnd();
+ }
+ // This will defend against trying to rewrite synthesized expressions.
+ if (Loc.isInvalid() || EndLoc.isInvalid())
+ return;
+
+ const char *startBuf = SM->getCharacterData(Loc);
+ const char *endBuf = SM->getCharacterData(EndLoc);
+ const char *startRef = nullptr, *endRef = nullptr;
+ if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
+ // Get the locations of the startRef, endRef.
+ SourceLocation LessLoc = Loc.getLocWithOffset(startRef-startBuf);
+ SourceLocation GreaterLoc = Loc.getLocWithOffset(endRef-startBuf+1);
+ // Comment out the protocol references.
+ InsertText(LessLoc, "/*");
+ InsertText(GreaterLoc, "*/");
+ }
+ }
+}
+
+void RewriteObjC::RewriteObjCQualifiedInterfaceTypes(Decl *Dcl) {
+ SourceLocation Loc;
+ QualType Type;
+ const FunctionProtoType *proto = nullptr;
+ if (VarDecl *VD = dyn_cast<VarDecl>(Dcl)) {
+ Loc = VD->getLocation();
+ Type = VD->getType();
+ }
+ else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(Dcl)) {
+ Loc = FD->getLocation();
+ // Check for ObjC 'id' and class types that have been adorned with protocol
+ // information (id<p>, C<p>*). The protocol references need to be rewritten!
+ const FunctionType *funcType = FD->getType()->getAs<FunctionType>();
+ assert(funcType && "missing function type");
+ proto = dyn_cast<FunctionProtoType>(funcType);
+ if (!proto)
+ return;
+ Type = proto->getReturnType();
+ }
+ else if (FieldDecl *FD = dyn_cast<FieldDecl>(Dcl)) {
+ Loc = FD->getLocation();
+ Type = FD->getType();
+ }
+ else
+ return;
+
+ if (needToScanForQualifiers(Type)) {
+ // Since types are unique, we need to scan the buffer.
+
+ const char *endBuf = SM->getCharacterData(Loc);
+ const char *startBuf = endBuf;
+ while (*startBuf != ';' && *startBuf != '<' && startBuf != MainFileStart)
+ startBuf--; // scan backward (from the decl location) for return type.
+ const char *startRef = nullptr, *endRef = nullptr;
+ if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
+ // Get the locations of the startRef, endRef.
+ SourceLocation LessLoc = Loc.getLocWithOffset(startRef-endBuf);
+ SourceLocation GreaterLoc = Loc.getLocWithOffset(endRef-endBuf+1);
+ // Comment out the protocol references.
+ InsertText(LessLoc, "/*");
+ InsertText(GreaterLoc, "*/");
+ }
+ }
+ if (!proto)
+ return; // most likely, was a variable
+ // Now check arguments.
+ const char *startBuf = SM->getCharacterData(Loc);
+ const char *startFuncBuf = startBuf;
+ for (unsigned i = 0; i < proto->getNumParams(); i++) {
+ if (needToScanForQualifiers(proto->getParamType(i))) {
+ // Since types are unique, we need to scan the buffer.
+
+ const char *endBuf = startBuf;
+ // scan forward (from the decl location) for argument types.
+ scanToNextArgument(endBuf);
+ const char *startRef = nullptr, *endRef = nullptr;
+ if (scanForProtocolRefs(startBuf, endBuf, startRef, endRef)) {
+ // Get the locations of the startRef, endRef.
+ SourceLocation LessLoc =
+ Loc.getLocWithOffset(startRef-startFuncBuf);
+ SourceLocation GreaterLoc =
+ Loc.getLocWithOffset(endRef-startFuncBuf+1);
+ // Comment out the protocol references.
+ InsertText(LessLoc, "/*");
+ InsertText(GreaterLoc, "*/");
+ }
+ startBuf = ++endBuf;
+ }
+ else {
+ // If the function name is derived from a macro expansion, then the
+ // argument buffer will not follow the name. Need to speak with Chris.
+ while (*startBuf && *startBuf != ')' && *startBuf != ',')
+ startBuf++; // scan forward (from the decl location) for argument types.
+ startBuf++;
+ }
+ }
+}
+
+void RewriteObjC::RewriteTypeOfDecl(VarDecl *ND) {
+ QualType QT = ND->getType();
+ const Type* TypePtr = QT->getAs<Type>();
+ if (!isa<TypeOfExprType>(TypePtr))
+ return;
+ while (isa<TypeOfExprType>(TypePtr)) {
+ const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr);
+ QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType();
+ TypePtr = QT->getAs<Type>();
+ }
+ // FIXME. This will not work for multiple declarators; as in:
+ // __typeof__(a) b,c,d;
+ std::string TypeAsString(QT.getAsString(Context->getPrintingPolicy()));
+ SourceLocation DeclLoc = ND->getTypeSpecStartLoc();
+ const char *startBuf = SM->getCharacterData(DeclLoc);
+ if (ND->getInit()) {
+ std::string Name(ND->getNameAsString());
+ TypeAsString += " " + Name + " = ";
+ Expr *E = ND->getInit();
+ SourceLocation startLoc;
+ if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E))
+ startLoc = ECE->getLParenLoc();
+ else
+ startLoc = E->getLocStart();
+ startLoc = SM->getExpansionLoc(startLoc);
+ const char *endBuf = SM->getCharacterData(startLoc);
+ ReplaceText(DeclLoc, endBuf-startBuf-1, TypeAsString);
+ }
+ else {
+ SourceLocation X = ND->getLocEnd();
+ X = SM->getExpansionLoc(X);
+ const char *endBuf = SM->getCharacterData(X);
+ ReplaceText(DeclLoc, endBuf-startBuf-1, TypeAsString);
+ }
+}
+
+// SynthSelGetUidFunctionDecl - SEL sel_registerName(const char *str);
+void RewriteObjC::SynthSelGetUidFunctionDecl() {
+ IdentifierInfo *SelGetUidIdent = &Context->Idents.get("sel_registerName");
+ SmallVector<QualType, 16> ArgTys;
+ ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
+ QualType getFuncType =
+ getSimpleFunctionType(Context->getObjCSelType(), ArgTys);
+ SelGetUidFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ SelGetUidIdent, getFuncType,
+ nullptr, SC_Extern);
+}
+
+void RewriteObjC::RewriteFunctionDecl(FunctionDecl *FD) {
+ // declared in <objc/objc.h>
+ if (FD->getIdentifier() &&
+ FD->getName() == "sel_registerName") {
+ SelGetUidFunctionDecl = FD;
+ return;
+ }
+ RewriteObjCQualifiedInterfaceTypes(FD);
+}
+
+void RewriteObjC::RewriteBlockPointerType(std::string& Str, QualType Type) {
+ std::string TypeString(Type.getAsString(Context->getPrintingPolicy()));
+ const char *argPtr = TypeString.c_str();
+ if (!strchr(argPtr, '^')) {
+ Str += TypeString;
+ return;
+ }
+ while (*argPtr) {
+ Str += (*argPtr == '^' ? '*' : *argPtr);
+ argPtr++;
+ }
+}
+
+// FIXME. Consolidate this routine with RewriteBlockPointerType.
+void RewriteObjC::RewriteBlockPointerTypeVariable(std::string& Str,
+ ValueDecl *VD) {
+ QualType Type = VD->getType();
+ std::string TypeString(Type.getAsString(Context->getPrintingPolicy()));
+ const char *argPtr = TypeString.c_str();
+ int paren = 0;
+ while (*argPtr) {
+ switch (*argPtr) {
+ case '(':
+ Str += *argPtr;
+ paren++;
+ break;
+ case ')':
+ Str += *argPtr;
+ paren--;
+ break;
+ case '^':
+ Str += '*';
+ if (paren == 1)
+ Str += VD->getNameAsString();
+ break;
+ default:
+ Str += *argPtr;
+ break;
+ }
+ argPtr++;
+ }
+}
+
+
+void RewriteObjC::RewriteBlockLiteralFunctionDecl(FunctionDecl *FD) {
+ SourceLocation FunLocStart = FD->getTypeSpecStartLoc();
+ const FunctionType *funcType = FD->getType()->getAs<FunctionType>();
+ const FunctionProtoType *proto = dyn_cast<FunctionProtoType>(funcType);
+ if (!proto)
+ return;
+ QualType Type = proto->getReturnType();
+ std::string FdStr = Type.getAsString(Context->getPrintingPolicy());
+ FdStr += " ";
+ FdStr += FD->getName();
+ FdStr += "(";
+ unsigned numArgs = proto->getNumParams();
+ for (unsigned i = 0; i < numArgs; i++) {
+ QualType ArgType = proto->getParamType(i);
+ RewriteBlockPointerType(FdStr, ArgType);
+ if (i+1 < numArgs)
+ FdStr += ", ";
+ }
+ FdStr += ");\n";
+ InsertText(FunLocStart, FdStr);
+ CurFunctionDeclToDeclareForBlock = nullptr;
+}
+
+// SynthSuperConstructorFunctionDecl - id objc_super(id obj, id super);
+void RewriteObjC::SynthSuperConstructorFunctionDecl() {
+ if (SuperConstructorFunctionDecl)
+ return;
+ IdentifierInfo *msgSendIdent = &Context->Idents.get("__rw_objc_super");
+ SmallVector<QualType, 16> ArgTys;
+ QualType argT = Context->getObjCIdType();
+ assert(!argT.isNull() && "Can't find 'id' type");
+ ArgTys.push_back(argT);
+ ArgTys.push_back(argT);
+ QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
+ ArgTys);
+ SuperConstructorFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ msgSendIdent, msgSendType,
+ nullptr, SC_Extern);
+}
+
+// SynthMsgSendFunctionDecl - id objc_msgSend(id self, SEL op, ...);
+void RewriteObjC::SynthMsgSendFunctionDecl() {
+ IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend");
+ SmallVector<QualType, 16> ArgTys;
+ QualType argT = Context->getObjCIdType();
+ assert(!argT.isNull() && "Can't find 'id' type");
+ ArgTys.push_back(argT);
+ argT = Context->getObjCSelType();
+ assert(!argT.isNull() && "Can't find 'SEL' type");
+ ArgTys.push_back(argT);
+ QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
+ ArgTys, /*isVariadic=*/true);
+ MsgSendFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ msgSendIdent, msgSendType,
+ nullptr, SC_Extern);
+}
+
+// SynthMsgSendSuperFunctionDecl - id objc_msgSendSuper(struct objc_super *, SEL op, ...);
+void RewriteObjC::SynthMsgSendSuperFunctionDecl() {
+ IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSendSuper");
+ SmallVector<QualType, 16> ArgTys;
+ RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get("objc_super"));
+ QualType argT = Context->getPointerType(Context->getTagDeclType(RD));
+ assert(!argT.isNull() && "Can't build 'struct objc_super *' type");
+ ArgTys.push_back(argT);
+ argT = Context->getObjCSelType();
+ assert(!argT.isNull() && "Can't find 'SEL' type");
+ ArgTys.push_back(argT);
+ QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
+ ArgTys, /*isVariadic=*/true);
+ MsgSendSuperFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ msgSendIdent, msgSendType,
+ nullptr, SC_Extern);
+}
+
+// SynthMsgSendStretFunctionDecl - id objc_msgSend_stret(id self, SEL op, ...);
+void RewriteObjC::SynthMsgSendStretFunctionDecl() {
+ IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_stret");
+ SmallVector<QualType, 16> ArgTys;
+ QualType argT = Context->getObjCIdType();
+ assert(!argT.isNull() && "Can't find 'id' type");
+ ArgTys.push_back(argT);
+ argT = Context->getObjCSelType();
+ assert(!argT.isNull() && "Can't find 'SEL' type");
+ ArgTys.push_back(argT);
+ QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
+ ArgTys, /*isVariadic=*/true);
+ MsgSendStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ msgSendIdent, msgSendType,
+ nullptr, SC_Extern);
+}
+
+// SynthMsgSendSuperStretFunctionDecl -
+// id objc_msgSendSuper_stret(struct objc_super *, SEL op, ...);
+void RewriteObjC::SynthMsgSendSuperStretFunctionDecl() {
+ IdentifierInfo *msgSendIdent =
+ &Context->Idents.get("objc_msgSendSuper_stret");
+ SmallVector<QualType, 16> ArgTys;
+ RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get("objc_super"));
+ QualType argT = Context->getPointerType(Context->getTagDeclType(RD));
+ assert(!argT.isNull() && "Can't build 'struct objc_super *' type");
+ ArgTys.push_back(argT);
+ argT = Context->getObjCSelType();
+ assert(!argT.isNull() && "Can't find 'SEL' type");
+ ArgTys.push_back(argT);
+ QualType msgSendType = getSimpleFunctionType(Context->getObjCIdType(),
+ ArgTys, /*isVariadic=*/true);
+ MsgSendSuperStretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ msgSendIdent,
+ msgSendType, nullptr,
+ SC_Extern);
+}
+
+// SynthMsgSendFpretFunctionDecl - double objc_msgSend_fpret(id self, SEL op, ...);
+void RewriteObjC::SynthMsgSendFpretFunctionDecl() {
+ IdentifierInfo *msgSendIdent = &Context->Idents.get("objc_msgSend_fpret");
+ SmallVector<QualType, 16> ArgTys;
+ QualType argT = Context->getObjCIdType();
+ assert(!argT.isNull() && "Can't find 'id' type");
+ ArgTys.push_back(argT);
+ argT = Context->getObjCSelType();
+ assert(!argT.isNull() && "Can't find 'SEL' type");
+ ArgTys.push_back(argT);
+ QualType msgSendType = getSimpleFunctionType(Context->DoubleTy,
+ ArgTys, /*isVariadic=*/true);
+ MsgSendFpretFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ msgSendIdent, msgSendType,
+ nullptr, SC_Extern);
+}
+
+// SynthGetClassFunctionDecl - id objc_getClass(const char *name);
+void RewriteObjC::SynthGetClassFunctionDecl() {
+ IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getClass");
+ SmallVector<QualType, 16> ArgTys;
+ ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
+ QualType getClassType = getSimpleFunctionType(Context->getObjCIdType(),
+ ArgTys);
+ GetClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ getClassIdent, getClassType,
+ nullptr, SC_Extern);
+}
+
+// SynthGetSuperClassFunctionDecl - Class class_getSuperclass(Class cls);
+void RewriteObjC::SynthGetSuperClassFunctionDecl() {
+ IdentifierInfo *getSuperClassIdent =
+ &Context->Idents.get("class_getSuperclass");
+ SmallVector<QualType, 16> ArgTys;
+ ArgTys.push_back(Context->getObjCClassType());
+ QualType getClassType = getSimpleFunctionType(Context->getObjCClassType(),
+ ArgTys);
+ GetSuperClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ getSuperClassIdent,
+ getClassType, nullptr,
+ SC_Extern);
+}
+
+// SynthGetMetaClassFunctionDecl - id objc_getMetaClass(const char *name);
+void RewriteObjC::SynthGetMetaClassFunctionDecl() {
+ IdentifierInfo *getClassIdent = &Context->Idents.get("objc_getMetaClass");
+ SmallVector<QualType, 16> ArgTys;
+ ArgTys.push_back(Context->getPointerType(Context->CharTy.withConst()));
+ QualType getClassType = getSimpleFunctionType(Context->getObjCIdType(),
+ ArgTys);
+ GetMetaClassFunctionDecl = FunctionDecl::Create(*Context, TUDecl,
+ SourceLocation(),
+ SourceLocation(),
+ getClassIdent, getClassType,
+ nullptr, SC_Extern);
+}
+
+Stmt *RewriteObjC::RewriteObjCStringLiteral(ObjCStringLiteral *Exp) {
+ assert(Exp != nullptr && "Expected non-null ObjCStringLiteral");
+ QualType strType = getConstantStringStructType();
+
+ std::string S = "__NSConstantStringImpl_";
+
+ std::string tmpName = InFileName;
+ unsigned i;
+ for (i=0; i < tmpName.length(); i++) {
+ char c = tmpName.at(i);
+ // replace any non-alphanumeric characters with '_'.
+ if (!isAlphanumeric(c))
+ tmpName[i] = '_';
+ }
+ S += tmpName;
+ S += "_";
+ S += utostr(NumObjCStringLiterals++);
+
+ Preamble += "static __NSConstantStringImpl " + S;
+ Preamble += " __attribute__ ((section (\"__DATA, __cfstring\"))) = {__CFConstantStringClassReference,";
+ Preamble += "0x000007c8,"; // utf8_str
+ // The pretty printer for StringLiteral handles escape characters properly.
+ std::string prettyBufS;
+ llvm::raw_string_ostream prettyBuf(prettyBufS);
+ Exp->getString()->printPretty(prettyBuf, nullptr, PrintingPolicy(LangOpts));
+ Preamble += prettyBuf.str();
+ Preamble += ",";
+ Preamble += utostr(Exp->getString()->getByteLength()) + "};\n";
+
+ VarDecl *NewVD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
+ SourceLocation(), &Context->Idents.get(S),
+ strType, nullptr, SC_Static);
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(NewVD, false, strType, VK_LValue,
+ SourceLocation());
+ Expr *Unop = new (Context) UnaryOperator(DRE, UO_AddrOf,
+ Context->getPointerType(DRE->getType()),
+ VK_RValue, OK_Ordinary,
+ SourceLocation());
+ // cast to NSConstantString *
+ CastExpr *cast = NoTypeInfoCStyleCastExpr(Context, Exp->getType(),
+ CK_CPointerToObjCPointerCast, Unop);
+ ReplaceStmt(Exp, cast);
+ // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
+ return cast;
+}
+
+// struct objc_super { struct objc_object *receiver; struct objc_class *super; };
+QualType RewriteObjC::getSuperStructType() {
+ if (!SuperStructDecl) {
+ SuperStructDecl = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get("objc_super"));
+ QualType FieldTypes[2];
+
+ // struct objc_object *receiver;
+ FieldTypes[0] = Context->getObjCIdType();
+ // struct objc_class *super;
+ FieldTypes[1] = Context->getObjCClassType();
+
+ // Create fields
+ for (unsigned i = 0; i < 2; ++i) {
+ SuperStructDecl->addDecl(FieldDecl::Create(*Context, SuperStructDecl,
+ SourceLocation(),
+ SourceLocation(), nullptr,
+ FieldTypes[i], nullptr,
+ /*BitWidth=*/nullptr,
+ /*Mutable=*/false,
+ ICIS_NoInit));
+ }
+
+ SuperStructDecl->completeDefinition();
+ }
+ return Context->getTagDeclType(SuperStructDecl);
+}
+
+QualType RewriteObjC::getConstantStringStructType() {
+ if (!ConstantStringDecl) {
+ ConstantStringDecl = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get("__NSConstantStringImpl"));
+ QualType FieldTypes[4];
+
+ // struct objc_object *receiver;
+ FieldTypes[0] = Context->getObjCIdType();
+ // int flags;
+ FieldTypes[1] = Context->IntTy;
+ // char *str;
+ FieldTypes[2] = Context->getPointerType(Context->CharTy);
+ // long length;
+ FieldTypes[3] = Context->LongTy;
+
+ // Create fields
+ for (unsigned i = 0; i < 4; ++i) {
+ ConstantStringDecl->addDecl(FieldDecl::Create(*Context,
+ ConstantStringDecl,
+ SourceLocation(),
+ SourceLocation(), nullptr,
+ FieldTypes[i], nullptr,
+ /*BitWidth=*/nullptr,
+ /*Mutable=*/true,
+ ICIS_NoInit));
+ }
+
+ ConstantStringDecl->completeDefinition();
+ }
+ return Context->getTagDeclType(ConstantStringDecl);
+}
+
+CallExpr *RewriteObjC::SynthMsgSendStretCallExpr(FunctionDecl *MsgSendStretFlavor,
+ QualType msgSendType,
+ QualType returnType,
+ SmallVectorImpl<QualType> &ArgTypes,
+ SmallVectorImpl<Expr*> &MsgExprs,
+ ObjCMethodDecl *Method) {
+ // Create a reference to the objc_msgSend_stret() declaration.
+ DeclRefExpr *STDRE = new (Context) DeclRefExpr(MsgSendStretFlavor,
+ false, msgSendType,
+ VK_LValue, SourceLocation());
+ // Need to cast objc_msgSend_stret to "void *" (see above comment).
+ CastExpr *cast = NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(Context->VoidTy),
+ CK_BitCast, STDRE);
+ // Now do the "normal" pointer to function cast.
+ QualType castType = getSimpleFunctionType(returnType, ArgTypes,
+ Method ? Method->isVariadic()
+ : false);
+ castType = Context->getPointerType(castType);
+ cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
+ cast);
+
+ // Don't forget the parens to enforce the proper binding.
+ ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), cast);
+
+ const FunctionType *FT = msgSendType->getAs<FunctionType>();
+ CallExpr *STCE = new (Context) CallExpr(
+ *Context, PE, MsgExprs, FT->getReturnType(), VK_RValue, SourceLocation());
+ return STCE;
+
+}
+
+
+Stmt *RewriteObjC::SynthMessageExpr(ObjCMessageExpr *Exp,
+ SourceLocation StartLoc,
+ SourceLocation EndLoc) {
+ if (!SelGetUidFunctionDecl)
+ SynthSelGetUidFunctionDecl();
+ if (!MsgSendFunctionDecl)
+ SynthMsgSendFunctionDecl();
+ if (!MsgSendSuperFunctionDecl)
+ SynthMsgSendSuperFunctionDecl();
+ if (!MsgSendStretFunctionDecl)
+ SynthMsgSendStretFunctionDecl();
+ if (!MsgSendSuperStretFunctionDecl)
+ SynthMsgSendSuperStretFunctionDecl();
+ if (!MsgSendFpretFunctionDecl)
+ SynthMsgSendFpretFunctionDecl();
+ if (!GetClassFunctionDecl)
+ SynthGetClassFunctionDecl();
+ if (!GetSuperClassFunctionDecl)
+ SynthGetSuperClassFunctionDecl();
+ if (!GetMetaClassFunctionDecl)
+ SynthGetMetaClassFunctionDecl();
+
+ // default to objc_msgSend().
+ FunctionDecl *MsgSendFlavor = MsgSendFunctionDecl;
+ // May need to use objc_msgSend_stret() as well.
+ FunctionDecl *MsgSendStretFlavor = nullptr;
+ if (ObjCMethodDecl *mDecl = Exp->getMethodDecl()) {
+ QualType resultType = mDecl->getReturnType();
+ if (resultType->isRecordType())
+ MsgSendStretFlavor = MsgSendStretFunctionDecl;
+ else if (resultType->isRealFloatingType())
+ MsgSendFlavor = MsgSendFpretFunctionDecl;
+ }
+
+ // Synthesize a call to objc_msgSend().
+ SmallVector<Expr*, 8> MsgExprs;
+ switch (Exp->getReceiverKind()) {
+ case ObjCMessageExpr::SuperClass: {
+ MsgSendFlavor = MsgSendSuperFunctionDecl;
+ if (MsgSendStretFlavor)
+ MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
+ assert(MsgSendFlavor && "MsgSendFlavor is NULL!");
+
+ ObjCInterfaceDecl *ClassDecl = CurMethodDef->getClassInterface();
+
+ SmallVector<Expr*, 4> InitExprs;
+
+ // set the receiver to self, the first argument to all methods.
+ InitExprs.push_back(
+ NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
+ CK_BitCast,
+ new (Context) DeclRefExpr(CurMethodDef->getSelfDecl(),
+ false,
+ Context->getObjCIdType(),
+ VK_RValue,
+ SourceLocation()))
+ ); // set the 'receiver'.
+
+ // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
+ SmallVector<Expr*, 8> ClsExprs;
+ ClsExprs.push_back(getStringLiteral(ClassDecl->getIdentifier()->getName()));
+ CallExpr *Cls = SynthesizeCallToFunctionDecl(GetMetaClassFunctionDecl,
+ &ClsExprs[0],
+ ClsExprs.size(),
+ StartLoc,
+ EndLoc);
+ // (Class)objc_getClass("CurrentClass")
+ CastExpr *ArgExpr = NoTypeInfoCStyleCastExpr(Context,
+ Context->getObjCClassType(),
+ CK_BitCast, Cls);
+ ClsExprs.clear();
+ ClsExprs.push_back(ArgExpr);
+ Cls = SynthesizeCallToFunctionDecl(GetSuperClassFunctionDecl,
+ &ClsExprs[0], ClsExprs.size(),
+ StartLoc, EndLoc);
+
+ // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
+ // To turn off a warning, type-cast to 'id'
+ InitExprs.push_back( // set 'super class', using class_getSuperclass().
+ NoTypeInfoCStyleCastExpr(Context,
+ Context->getObjCIdType(),
+ CK_BitCast, Cls));
+ // struct objc_super
+ QualType superType = getSuperStructType();
+ Expr *SuperRep;
+
+ if (LangOpts.MicrosoftExt) {
+ SynthSuperConstructorFunctionDecl();
+ // Simulate a constructor call...
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(SuperConstructorFunctionDecl,
+ false, superType, VK_LValue,
+ SourceLocation());
+ SuperRep = new (Context) CallExpr(*Context, DRE, InitExprs,
+ superType, VK_LValue,
+ SourceLocation());
+ // The code for super is a little tricky to prevent collision with
+ // the structure definition in the header. The rewriter has it's own
+ // internal definition (__rw_objc_super) that is uses. This is why
+ // we need the cast below. For example:
+ // (struct objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
+ //
+ SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
+ Context->getPointerType(SuperRep->getType()),
+ VK_RValue, OK_Ordinary,
+ SourceLocation());
+ SuperRep = NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(superType),
+ CK_BitCast, SuperRep);
+ } else {
+ // (struct objc_super) { <exprs from above> }
+ InitListExpr *ILE =
+ new (Context) InitListExpr(*Context, SourceLocation(), InitExprs,
+ SourceLocation());
+ TypeSourceInfo *superTInfo
+ = Context->getTrivialTypeSourceInfo(superType);
+ SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo,
+ superType, VK_LValue,
+ ILE, false);
+ // struct objc_super *
+ SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
+ Context->getPointerType(SuperRep->getType()),
+ VK_RValue, OK_Ordinary,
+ SourceLocation());
+ }
+ MsgExprs.push_back(SuperRep);
+ break;
+ }
+
+ case ObjCMessageExpr::Class: {
+ SmallVector<Expr*, 8> ClsExprs;
+ ObjCInterfaceDecl *Class
+ = Exp->getClassReceiver()->getAs<ObjCObjectType>()->getInterface();
+ IdentifierInfo *clsName = Class->getIdentifier();
+ ClsExprs.push_back(getStringLiteral(clsName->getName()));
+ CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
+ &ClsExprs[0],
+ ClsExprs.size(),
+ StartLoc, EndLoc);
+ MsgExprs.push_back(Cls);
+ break;
+ }
+
+ case ObjCMessageExpr::SuperInstance:{
+ MsgSendFlavor = MsgSendSuperFunctionDecl;
+ if (MsgSendStretFlavor)
+ MsgSendStretFlavor = MsgSendSuperStretFunctionDecl;
+ assert(MsgSendFlavor && "MsgSendFlavor is NULL!");
+ ObjCInterfaceDecl *ClassDecl = CurMethodDef->getClassInterface();
+ SmallVector<Expr*, 4> InitExprs;
+
+ InitExprs.push_back(
+ NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
+ CK_BitCast,
+ new (Context) DeclRefExpr(CurMethodDef->getSelfDecl(),
+ false,
+ Context->getObjCIdType(),
+ VK_RValue, SourceLocation()))
+ ); // set the 'receiver'.
+
+ // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
+ SmallVector<Expr*, 8> ClsExprs;
+ ClsExprs.push_back(getStringLiteral(ClassDecl->getIdentifier()->getName()));
+ CallExpr *Cls = SynthesizeCallToFunctionDecl(GetClassFunctionDecl,
+ &ClsExprs[0],
+ ClsExprs.size(),
+ StartLoc, EndLoc);
+ // (Class)objc_getClass("CurrentClass")
+ CastExpr *ArgExpr = NoTypeInfoCStyleCastExpr(Context,
+ Context->getObjCClassType(),
+ CK_BitCast, Cls);
+ ClsExprs.clear();
+ ClsExprs.push_back(ArgExpr);
+ Cls = SynthesizeCallToFunctionDecl(GetSuperClassFunctionDecl,
+ &ClsExprs[0], ClsExprs.size(),
+ StartLoc, EndLoc);
+
+ // (id)class_getSuperclass((Class)objc_getClass("CurrentClass"))
+ // To turn off a warning, type-cast to 'id'
+ InitExprs.push_back(
+ // set 'super class', using class_getSuperclass().
+ NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
+ CK_BitCast, Cls));
+ // struct objc_super
+ QualType superType = getSuperStructType();
+ Expr *SuperRep;
+
+ if (LangOpts.MicrosoftExt) {
+ SynthSuperConstructorFunctionDecl();
+ // Simulate a constructor call...
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(SuperConstructorFunctionDecl,
+ false, superType, VK_LValue,
+ SourceLocation());
+ SuperRep = new (Context) CallExpr(*Context, DRE, InitExprs,
+ superType, VK_LValue, SourceLocation());
+ // The code for super is a little tricky to prevent collision with
+ // the structure definition in the header. The rewriter has it's own
+ // internal definition (__rw_objc_super) that is uses. This is why
+ // we need the cast below. For example:
+ // (struct objc_super *)&__rw_objc_super((id)self, (id)objc_getClass("SUPER"))
+ //
+ SuperRep = new (Context) UnaryOperator(SuperRep, UO_AddrOf,
+ Context->getPointerType(SuperRep->getType()),
+ VK_RValue, OK_Ordinary,
+ SourceLocation());
+ SuperRep = NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(superType),
+ CK_BitCast, SuperRep);
+ } else {
+ // (struct objc_super) { <exprs from above> }
+ InitListExpr *ILE =
+ new (Context) InitListExpr(*Context, SourceLocation(), InitExprs,
+ SourceLocation());
+ TypeSourceInfo *superTInfo
+ = Context->getTrivialTypeSourceInfo(superType);
+ SuperRep = new (Context) CompoundLiteralExpr(SourceLocation(), superTInfo,
+ superType, VK_RValue, ILE,
+ false);
+ }
+ MsgExprs.push_back(SuperRep);
+ break;
+ }
+
+ case ObjCMessageExpr::Instance: {
+ // Remove all type-casts because it may contain objc-style types; e.g.
+ // Foo<Proto> *.
+ Expr *recExpr = Exp->getInstanceReceiver();
+ while (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(recExpr))
+ recExpr = CE->getSubExpr();
+ CastKind CK = recExpr->getType()->isObjCObjectPointerType()
+ ? CK_BitCast : recExpr->getType()->isBlockPointerType()
+ ? CK_BlockPointerToObjCPointerCast
+ : CK_CPointerToObjCPointerCast;
+
+ recExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
+ CK, recExpr);
+ MsgExprs.push_back(recExpr);
+ break;
+ }
+ }
+
+ // Create a call to sel_registerName("selName"), it will be the 2nd argument.
+ SmallVector<Expr*, 8> SelExprs;
+ SelExprs.push_back(getStringLiteral(Exp->getSelector().getAsString()));
+ CallExpr *SelExp = SynthesizeCallToFunctionDecl(SelGetUidFunctionDecl,
+ &SelExprs[0], SelExprs.size(),
+ StartLoc,
+ EndLoc);
+ MsgExprs.push_back(SelExp);
+
+ // Now push any user supplied arguments.
+ for (unsigned i = 0; i < Exp->getNumArgs(); i++) {
+ Expr *userExpr = Exp->getArg(i);
+ // Make all implicit casts explicit...ICE comes in handy:-)
+ if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(userExpr)) {
+ // Reuse the ICE type, it is exactly what the doctor ordered.
+ QualType type = ICE->getType();
+ if (needToScanForQualifiers(type))
+ type = Context->getObjCIdType();
+ // Make sure we convert "type (^)(...)" to "type (*)(...)".
+ (void)convertBlockPointerToFunctionPointer(type);
+ const Expr *SubExpr = ICE->IgnoreParenImpCasts();
+ CastKind CK;
+ if (SubExpr->getType()->isIntegralType(*Context) &&
+ type->isBooleanType()) {
+ CK = CK_IntegralToBoolean;
+ } else if (type->isObjCObjectPointerType()) {
+ if (SubExpr->getType()->isBlockPointerType()) {
+ CK = CK_BlockPointerToObjCPointerCast;
+ } else if (SubExpr->getType()->isPointerType()) {
+ CK = CK_CPointerToObjCPointerCast;
+ } else {
+ CK = CK_BitCast;
+ }
+ } else {
+ CK = CK_BitCast;
+ }
+
+ userExpr = NoTypeInfoCStyleCastExpr(Context, type, CK, userExpr);
+ }
+ // Make id<P...> cast into an 'id' cast.
+ else if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(userExpr)) {
+ if (CE->getType()->isObjCQualifiedIdType()) {
+ while ((CE = dyn_cast<CStyleCastExpr>(userExpr)))
+ userExpr = CE->getSubExpr();
+ CastKind CK;
+ if (userExpr->getType()->isIntegralType(*Context)) {
+ CK = CK_IntegralToPointer;
+ } else if (userExpr->getType()->isBlockPointerType()) {
+ CK = CK_BlockPointerToObjCPointerCast;
+ } else if (userExpr->getType()->isPointerType()) {
+ CK = CK_CPointerToObjCPointerCast;
+ } else {
+ CK = CK_BitCast;
+ }
+ userExpr = NoTypeInfoCStyleCastExpr(Context, Context->getObjCIdType(),
+ CK, userExpr);
+ }
+ }
+ MsgExprs.push_back(userExpr);
+ // We've transferred the ownership to MsgExprs. For now, we *don't* null
+ // out the argument in the original expression (since we aren't deleting
+ // the ObjCMessageExpr). See RewritePropertyOrImplicitSetter() usage for more info.
+ //Exp->setArg(i, 0);
+ }
+ // Generate the funky cast.
+ CastExpr *cast;
+ SmallVector<QualType, 8> ArgTypes;
+ QualType returnType;
+
+ // Push 'id' and 'SEL', the 2 implicit arguments.
+ if (MsgSendFlavor == MsgSendSuperFunctionDecl)
+ ArgTypes.push_back(Context->getPointerType(getSuperStructType()));
+ else
+ ArgTypes.push_back(Context->getObjCIdType());
+ ArgTypes.push_back(Context->getObjCSelType());
+ if (ObjCMethodDecl *OMD = Exp->getMethodDecl()) {
+ // Push any user argument types.
+ for (const auto *PI : OMD->params()) {
+ QualType t = PI->getType()->isObjCQualifiedIdType()
+ ? Context->getObjCIdType()
+ : PI->getType();
+ // Make sure we convert "t (^)(...)" to "t (*)(...)".
+ (void)convertBlockPointerToFunctionPointer(t);
+ ArgTypes.push_back(t);
+ }
+ returnType = Exp->getType();
+ convertToUnqualifiedObjCType(returnType);
+ (void)convertBlockPointerToFunctionPointer(returnType);
+ } else {
+ returnType = Context->getObjCIdType();
+ }
+ // Get the type, we will need to reference it in a couple spots.
+ QualType msgSendType = MsgSendFlavor->getType();
+
+ // Create a reference to the objc_msgSend() declaration.
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(MsgSendFlavor, false, msgSendType,
+ VK_LValue, SourceLocation());
+
+ // Need to cast objc_msgSend to "void *" (to workaround a GCC bandaid).
+ // If we don't do this cast, we get the following bizarre warning/note:
+ // xx.m:13: warning: function called through a non-compatible type
+ // xx.m:13: note: if this code is reached, the program will abort
+ cast = NoTypeInfoCStyleCastExpr(Context,
+ Context->getPointerType(Context->VoidTy),
+ CK_BitCast, DRE);
+
+ // Now do the "normal" pointer to function cast.
+ // If we don't have a method decl, force a variadic cast.
+ const ObjCMethodDecl *MD = Exp->getMethodDecl();
+ QualType castType =
+ getSimpleFunctionType(returnType, ArgTypes, MD ? MD->isVariadic() : true);
+ castType = Context->getPointerType(castType);
+ cast = NoTypeInfoCStyleCastExpr(Context, castType, CK_BitCast,
+ cast);
+
+ // Don't forget the parens to enforce the proper binding.
+ ParenExpr *PE = new (Context) ParenExpr(StartLoc, EndLoc, cast);
+
+ const FunctionType *FT = msgSendType->getAs<FunctionType>();
+ CallExpr *CE = new (Context)
+ CallExpr(*Context, PE, MsgExprs, FT->getReturnType(), VK_RValue, EndLoc);
+ Stmt *ReplacingStmt = CE;
+ if (MsgSendStretFlavor) {
+ // We have the method which returns a struct/union. Must also generate
+ // call to objc_msgSend_stret and hang both varieties on a conditional
+ // expression which dictate which one to envoke depending on size of
+ // method's return type.
+
+ CallExpr *STCE = SynthMsgSendStretCallExpr(MsgSendStretFlavor,
+ msgSendType, returnType,
+ ArgTypes, MsgExprs,
+ Exp->getMethodDecl());
+
+ // Build sizeof(returnType)
+ UnaryExprOrTypeTraitExpr *sizeofExpr =
+ new (Context) UnaryExprOrTypeTraitExpr(UETT_SizeOf,
+ Context->getTrivialTypeSourceInfo(returnType),
+ Context->getSizeType(), SourceLocation(),
+ SourceLocation());
+ // (sizeof(returnType) <= 8 ? objc_msgSend(...) : objc_msgSend_stret(...))
+ // FIXME: Value of 8 is base on ppc32/x86 ABI for the most common cases.
+ // For X86 it is more complicated and some kind of target specific routine
+ // is needed to decide what to do.
+ unsigned IntSize =
+ static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
+ IntegerLiteral *limit = IntegerLiteral::Create(*Context,
+ llvm::APInt(IntSize, 8),
+ Context->IntTy,
+ SourceLocation());
+ BinaryOperator *lessThanExpr =
+ new (Context) BinaryOperator(sizeofExpr, limit, BO_LE, Context->IntTy,
+ VK_RValue, OK_Ordinary, SourceLocation(),
+ false);
+ // (sizeof(returnType) <= 8 ? objc_msgSend(...) : objc_msgSend_stret(...))
+ ConditionalOperator *CondExpr =
+ new (Context) ConditionalOperator(lessThanExpr,
+ SourceLocation(), CE,
+ SourceLocation(), STCE,
+ returnType, VK_RValue, OK_Ordinary);
+ ReplacingStmt = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
+ CondExpr);
+ }
+ // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
+ return ReplacingStmt;
+}
+
+Stmt *RewriteObjC::RewriteMessageExpr(ObjCMessageExpr *Exp) {
+ Stmt *ReplacingStmt = SynthMessageExpr(Exp, Exp->getLocStart(),
+ Exp->getLocEnd());
+
+ // Now do the actual rewrite.
+ ReplaceStmt(Exp, ReplacingStmt);
+
+ // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
+ return ReplacingStmt;
+}
+
+// typedef struct objc_object Protocol;
+QualType RewriteObjC::getProtocolType() {
+ if (!ProtocolTypeDecl) {
+ TypeSourceInfo *TInfo
+ = Context->getTrivialTypeSourceInfo(Context->getObjCIdType());
+ ProtocolTypeDecl = TypedefDecl::Create(*Context, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get("Protocol"),
+ TInfo);
+ }
+ return Context->getTypeDeclType(ProtocolTypeDecl);
+}
+
+/// RewriteObjCProtocolExpr - Rewrite a protocol expression into
+/// a synthesized/forward data reference (to the protocol's metadata).
+/// The forward references (and metadata) are generated in
+/// RewriteObjC::HandleTranslationUnit().
+Stmt *RewriteObjC::RewriteObjCProtocolExpr(ObjCProtocolExpr *Exp) {
+ std::string Name = "_OBJC_PROTOCOL_" + Exp->getProtocol()->getNameAsString();
+ IdentifierInfo *ID = &Context->Idents.get(Name);
+ VarDecl *VD = VarDecl::Create(*Context, TUDecl, SourceLocation(),
+ SourceLocation(), ID, getProtocolType(),
+ nullptr, SC_Extern);
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(VD, false, getProtocolType(),
+ VK_LValue, SourceLocation());
+ Expr *DerefExpr = new (Context) UnaryOperator(DRE, UO_AddrOf,
+ Context->getPointerType(DRE->getType()),
+ VK_RValue, OK_Ordinary, SourceLocation());
+ CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, DerefExpr->getType(),
+ CK_BitCast,
+ DerefExpr);
+ ReplaceStmt(Exp, castExpr);
+ ProtocolExprDecls.insert(Exp->getProtocol()->getCanonicalDecl());
+ // delete Exp; leak for now, see RewritePropertyOrImplicitSetter() usage for more info.
+ return castExpr;
+
+}
+
+bool RewriteObjC::BufferContainsPPDirectives(const char *startBuf,
+ const char *endBuf) {
+ while (startBuf < endBuf) {
+ if (*startBuf == '#') {
+ // Skip whitespace.
+ for (++startBuf; startBuf[0] == ' ' || startBuf[0] == '\t'; ++startBuf)
+ ;
+ if (!strncmp(startBuf, "if", strlen("if")) ||
+ !strncmp(startBuf, "ifdef", strlen("ifdef")) ||
+ !strncmp(startBuf, "ifndef", strlen("ifndef")) ||
+ !strncmp(startBuf, "define", strlen("define")) ||
+ !strncmp(startBuf, "undef", strlen("undef")) ||
+ !strncmp(startBuf, "else", strlen("else")) ||
+ !strncmp(startBuf, "elif", strlen("elif")) ||
+ !strncmp(startBuf, "endif", strlen("endif")) ||
+ !strncmp(startBuf, "pragma", strlen("pragma")) ||
+ !strncmp(startBuf, "include", strlen("include")) ||
+ !strncmp(startBuf, "import", strlen("import")) ||
+ !strncmp(startBuf, "include_next", strlen("include_next")))
+ return true;
+ }
+ startBuf++;
+ }
+ return false;
+}
+
+/// RewriteObjCInternalStruct - Rewrite one internal struct corresponding to
+/// an objective-c class with ivars.
+void RewriteObjC::RewriteObjCInternalStruct(ObjCInterfaceDecl *CDecl,
+ std::string &Result) {
+ assert(CDecl && "Class missing in SynthesizeObjCInternalStruct");
+ assert(CDecl->getName() != "" &&
+ "Name missing in SynthesizeObjCInternalStruct");
+ // Do not synthesize more than once.
+ if (ObjCSynthesizedStructs.count(CDecl))
+ return;
+ ObjCInterfaceDecl *RCDecl = CDecl->getSuperClass();
+ int NumIvars = CDecl->ivar_size();
+ SourceLocation LocStart = CDecl->getLocStart();
+ SourceLocation LocEnd = CDecl->getEndOfDefinitionLoc();
+
+ const char *startBuf = SM->getCharacterData(LocStart);
+ const char *endBuf = SM->getCharacterData(LocEnd);
+
+ // If no ivars and no root or if its root, directly or indirectly,
+ // have no ivars (thus not synthesized) then no need to synthesize this class.
+ if ((!CDecl->isThisDeclarationADefinition() || NumIvars == 0) &&
+ (!RCDecl || !ObjCSynthesizedStructs.count(RCDecl))) {
+ endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts);
+ ReplaceText(LocStart, endBuf-startBuf, Result);
+ return;
+ }
+
+ // FIXME: This has potential of causing problem. If
+ // SynthesizeObjCInternalStruct is ever called recursively.
+ Result += "\nstruct ";
+ Result += CDecl->getNameAsString();
+ if (LangOpts.MicrosoftExt)
+ Result += "_IMPL";
+
+ if (NumIvars > 0) {
+ const char *cursor = strchr(startBuf, '{');
+ assert((cursor && endBuf)
+ && "SynthesizeObjCInternalStruct - malformed @interface");
+ // If the buffer contains preprocessor directives, we do more fine-grained
+ // rewrites. This is intended to fix code that looks like (which occurs in
+ // NSURL.h, for example):
+ //
+ // #ifdef XYZ
+ // @interface Foo : NSObject
+ // #else
+ // @interface FooBar : NSObject
+ // #endif
+ // {
+ // int i;
+ // }
+ // @end
+ //
+ // This clause is segregated to avoid breaking the common case.
+ if (BufferContainsPPDirectives(startBuf, cursor)) {
+ SourceLocation L = RCDecl ? CDecl->getSuperClassLoc() :
+ CDecl->getAtStartLoc();
+ const char *endHeader = SM->getCharacterData(L);
+ endHeader += Lexer::MeasureTokenLength(L, *SM, LangOpts);
+
+ if (CDecl->protocol_begin() != CDecl->protocol_end()) {
+ // advance to the end of the referenced protocols.
+ while (endHeader < cursor && *endHeader != '>') endHeader++;
+ endHeader++;
+ }
+ // rewrite the original header
+ ReplaceText(LocStart, endHeader-startBuf, Result);
+ } else {
+ // rewrite the original header *without* disturbing the '{'
+ ReplaceText(LocStart, cursor-startBuf, Result);
+ }
+ if (RCDecl && ObjCSynthesizedStructs.count(RCDecl)) {
+ Result = "\n struct ";
+ Result += RCDecl->getNameAsString();
+ Result += "_IMPL ";
+ Result += RCDecl->getNameAsString();
+ Result += "_IVARS;\n";
+
+ // insert the super class structure definition.
+ SourceLocation OnePastCurly =
+ LocStart.getLocWithOffset(cursor-startBuf+1);
+ InsertText(OnePastCurly, Result);
+ }
+ cursor++; // past '{'
+
+ // Now comment out any visibility specifiers.
+ while (cursor < endBuf) {
+ if (*cursor == '@') {
+ SourceLocation atLoc = LocStart.getLocWithOffset(cursor-startBuf);
+ // Skip whitespace.
+ for (++cursor; cursor[0] == ' ' || cursor[0] == '\t'; ++cursor)
+ /*scan*/;
+
+ // FIXME: presence of @public, etc. inside comment results in
+ // this transformation as well, which is still correct c-code.
+ if (!strncmp(cursor, "public", strlen("public")) ||
+ !strncmp(cursor, "private", strlen("private")) ||
+ !strncmp(cursor, "package", strlen("package")) ||
+ !strncmp(cursor, "protected", strlen("protected")))
+ InsertText(atLoc, "// ");
+ }
+ // FIXME: If there are cases where '<' is used in ivar declaration part
+ // of user code, then scan the ivar list and use needToScanForQualifiers
+ // for type checking.
+ else if (*cursor == '<') {
+ SourceLocation atLoc = LocStart.getLocWithOffset(cursor-startBuf);
+ InsertText(atLoc, "/* ");
+ cursor = strchr(cursor, '>');
+ cursor++;
+ atLoc = LocStart.getLocWithOffset(cursor-startBuf);
+ InsertText(atLoc, " */");
+ } else if (*cursor == '^') { // rewrite block specifier.
+ SourceLocation caretLoc = LocStart.getLocWithOffset(cursor-startBuf);
+ ReplaceText(caretLoc, 1, "*");
+ }
+ cursor++;
+ }
+ // Don't forget to add a ';'!!
+ InsertText(LocEnd.getLocWithOffset(1), ";");
+ } else { // we don't have any instance variables - insert super struct.
+ endBuf += Lexer::MeasureTokenLength(LocEnd, *SM, LangOpts);
+ Result += " {\n struct ";
+ Result += RCDecl->getNameAsString();
+ Result += "_IMPL ";
+ Result += RCDecl->getNameAsString();
+ Result += "_IVARS;\n};\n";
+ ReplaceText(LocStart, endBuf-startBuf, Result);
+ }
+ // Mark this struct as having been generated.
+ if (!ObjCSynthesizedStructs.insert(CDecl).second)
+ llvm_unreachable("struct already synthesize- SynthesizeObjCInternalStruct");
+}
+
+//===----------------------------------------------------------------------===//
+// Meta Data Emission
+//===----------------------------------------------------------------------===//
+
+
+/// RewriteImplementations - This routine rewrites all method implementations
+/// and emits meta-data.
+
+void RewriteObjC::RewriteImplementations() {
+ int ClsDefCount = ClassImplementation.size();
+ int CatDefCount = CategoryImplementation.size();
+
+ // Rewrite implemented methods
+ for (int i = 0; i < ClsDefCount; i++)
+ RewriteImplementationDecl(ClassImplementation[i]);
+
+ for (int i = 0; i < CatDefCount; i++)
+ RewriteImplementationDecl(CategoryImplementation[i]);
+}
+
+void RewriteObjC::RewriteByRefString(std::string &ResultStr,
+ const std::string &Name,
+ ValueDecl *VD, bool def) {
+ assert(BlockByRefDeclNo.count(VD) &&
+ "RewriteByRefString: ByRef decl missing");
+ if (def)
+ ResultStr += "struct ";
+ ResultStr += "__Block_byref_" + Name +
+ "_" + utostr(BlockByRefDeclNo[VD]) ;
+}
+
+static bool HasLocalVariableExternalStorage(ValueDecl *VD) {
+ if (VarDecl *Var = dyn_cast<VarDecl>(VD))
+ return (Var->isFunctionOrMethodVarDecl() && !Var->hasLocalStorage());
+ return false;
+}
+
+std::string RewriteObjC::SynthesizeBlockFunc(BlockExpr *CE, int i,
+ StringRef funcName,
+ std::string Tag) {
+ const FunctionType *AFT = CE->getFunctionType();
+ QualType RT = AFT->getReturnType();
+ std::string StructRef = "struct " + Tag;
+ std::string S = "static " + RT.getAsString(Context->getPrintingPolicy()) + " __" +
+ funcName.str() + "_" + "block_func_" + utostr(i);
+
+ BlockDecl *BD = CE->getBlockDecl();
+
+ if (isa<FunctionNoProtoType>(AFT)) {
+ // No user-supplied arguments. Still need to pass in a pointer to the
+ // block (to reference imported block decl refs).
+ S += "(" + StructRef + " *__cself)";
+ } else if (BD->param_empty()) {
+ S += "(" + StructRef + " *__cself)";
+ } else {
+ const FunctionProtoType *FT = cast<FunctionProtoType>(AFT);
+ assert(FT && "SynthesizeBlockFunc: No function proto");
+ S += '(';
+ // first add the implicit argument.
+ S += StructRef + " *__cself, ";
+ std::string ParamStr;
+ for (BlockDecl::param_iterator AI = BD->param_begin(),
+ E = BD->param_end(); AI != E; ++AI) {
+ if (AI != BD->param_begin()) S += ", ";
+ ParamStr = (*AI)->getNameAsString();
+ QualType QT = (*AI)->getType();
+ (void)convertBlockPointerToFunctionPointer(QT);
+ QT.getAsStringInternal(ParamStr, Context->getPrintingPolicy());
+ S += ParamStr;
+ }
+ if (FT->isVariadic()) {
+ if (!BD->param_empty()) S += ", ";
+ S += "...";
+ }
+ S += ')';
+ }
+ S += " {\n";
+
+ // Create local declarations to avoid rewriting all closure decl ref exprs.
+ // First, emit a declaration for all "by ref" decls.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
+ E = BlockByRefDecls.end(); I != E; ++I) {
+ S += " ";
+ std::string Name = (*I)->getNameAsString();
+ std::string TypeString;
+ RewriteByRefString(TypeString, Name, (*I));
+ TypeString += " *";
+ Name = TypeString + Name;
+ S += Name + " = __cself->" + (*I)->getNameAsString() + "; // bound by ref\n";
+ }
+ // Next, emit a declaration for all "by copy" declarations.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
+ E = BlockByCopyDecls.end(); I != E; ++I) {
+ S += " ";
+ // Handle nested closure invocation. For example:
+ //
+ // void (^myImportedClosure)(void);
+ // myImportedClosure = ^(void) { setGlobalInt(x + y); };
+ //
+ // void (^anotherClosure)(void);
+ // anotherClosure = ^(void) {
+ // myImportedClosure(); // import and invoke the closure
+ // };
+ //
+ if (isTopLevelBlockPointerType((*I)->getType())) {
+ RewriteBlockPointerTypeVariable(S, (*I));
+ S += " = (";
+ RewriteBlockPointerType(S, (*I)->getType());
+ S += ")";
+ S += "__cself->" + (*I)->getNameAsString() + "; // bound by copy\n";
+ }
+ else {
+ std::string Name = (*I)->getNameAsString();
+ QualType QT = (*I)->getType();
+ if (HasLocalVariableExternalStorage(*I))
+ QT = Context->getPointerType(QT);
+ QT.getAsStringInternal(Name, Context->getPrintingPolicy());
+ S += Name + " = __cself->" +
+ (*I)->getNameAsString() + "; // bound by copy\n";
+ }
+ }
+ std::string RewrittenStr = RewrittenBlockExprs[CE];
+ const char *cstr = RewrittenStr.c_str();
+ while (*cstr++ != '{') ;
+ S += cstr;
+ S += "\n";
+ return S;
+}
+
+std::string RewriteObjC::SynthesizeBlockHelperFuncs(BlockExpr *CE, int i,
+ StringRef funcName,
+ std::string Tag) {
+ std::string StructRef = "struct " + Tag;
+ std::string S = "static void __";
+
+ S += funcName;
+ S += "_block_copy_" + utostr(i);
+ S += "(" + StructRef;
+ S += "*dst, " + StructRef;
+ S += "*src) {";
+ for (ValueDecl *VD : ImportedBlockDecls) {
+ S += "_Block_object_assign((void*)&dst->";
+ S += VD->getNameAsString();
+ S += ", (void*)src->";
+ S += VD->getNameAsString();
+ if (BlockByRefDeclsPtrSet.count(VD))
+ S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);";
+ else if (VD->getType()->isBlockPointerType())
+ S += ", " + utostr(BLOCK_FIELD_IS_BLOCK) + "/*BLOCK_FIELD_IS_BLOCK*/);";
+ else
+ S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);";
+ }
+ S += "}\n";
+
+ S += "\nstatic void __";
+ S += funcName;
+ S += "_block_dispose_" + utostr(i);
+ S += "(" + StructRef;
+ S += "*src) {";
+ for (ValueDecl *VD : ImportedBlockDecls) {
+ S += "_Block_object_dispose((void*)src->";
+ S += VD->getNameAsString();
+ if (BlockByRefDeclsPtrSet.count(VD))
+ S += ", " + utostr(BLOCK_FIELD_IS_BYREF) + "/*BLOCK_FIELD_IS_BYREF*/);";
+ else if (VD->getType()->isBlockPointerType())
+ S += ", " + utostr(BLOCK_FIELD_IS_BLOCK) + "/*BLOCK_FIELD_IS_BLOCK*/);";
+ else
+ S += ", " + utostr(BLOCK_FIELD_IS_OBJECT) + "/*BLOCK_FIELD_IS_OBJECT*/);";
+ }
+ S += "}\n";
+ return S;
+}
+
+std::string RewriteObjC::SynthesizeBlockImpl(BlockExpr *CE, std::string Tag,
+ std::string Desc) {
+ std::string S = "\nstruct " + Tag;
+ std::string Constructor = " " + Tag;
+
+ S += " {\n struct __block_impl impl;\n";
+ S += " struct " + Desc;
+ S += "* Desc;\n";
+
+ Constructor += "(void *fp, "; // Invoke function pointer.
+ Constructor += "struct " + Desc; // Descriptor pointer.
+ Constructor += " *desc";
+
+ if (BlockDeclRefs.size()) {
+ // Output all "by copy" declarations.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
+ E = BlockByCopyDecls.end(); I != E; ++I) {
+ S += " ";
+ std::string FieldName = (*I)->getNameAsString();
+ std::string ArgName = "_" + FieldName;
+ // Handle nested closure invocation. For example:
+ //
+ // void (^myImportedBlock)(void);
+ // myImportedBlock = ^(void) { setGlobalInt(x + y); };
+ //
+ // void (^anotherBlock)(void);
+ // anotherBlock = ^(void) {
+ // myImportedBlock(); // import and invoke the closure
+ // };
+ //
+ if (isTopLevelBlockPointerType((*I)->getType())) {
+ S += "struct __block_impl *";
+ Constructor += ", void *" + ArgName;
+ } else {
+ QualType QT = (*I)->getType();
+ if (HasLocalVariableExternalStorage(*I))
+ QT = Context->getPointerType(QT);
+ QT.getAsStringInternal(FieldName, Context->getPrintingPolicy());
+ QT.getAsStringInternal(ArgName, Context->getPrintingPolicy());
+ Constructor += ", " + ArgName;
+ }
+ S += FieldName + ";\n";
+ }
+ // Output all "by ref" declarations.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
+ E = BlockByRefDecls.end(); I != E; ++I) {
+ S += " ";
+ std::string FieldName = (*I)->getNameAsString();
+ std::string ArgName = "_" + FieldName;
+ {
+ std::string TypeString;
+ RewriteByRefString(TypeString, FieldName, (*I));
+ TypeString += " *";
+ FieldName = TypeString + FieldName;
+ ArgName = TypeString + ArgName;
+ Constructor += ", " + ArgName;
+ }
+ S += FieldName + "; // by ref\n";
+ }
+ // Finish writing the constructor.
+ Constructor += ", int flags=0)";
+ // Initialize all "by copy" arguments.
+ bool firsTime = true;
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
+ E = BlockByCopyDecls.end(); I != E; ++I) {
+ std::string Name = (*I)->getNameAsString();
+ if (firsTime) {
+ Constructor += " : ";
+ firsTime = false;
+ }
+ else
+ Constructor += ", ";
+ if (isTopLevelBlockPointerType((*I)->getType()))
+ Constructor += Name + "((struct __block_impl *)_" + Name + ")";
+ else
+ Constructor += Name + "(_" + Name + ")";
+ }
+ // Initialize all "by ref" arguments.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
+ E = BlockByRefDecls.end(); I != E; ++I) {
+ std::string Name = (*I)->getNameAsString();
+ if (firsTime) {
+ Constructor += " : ";
+ firsTime = false;
+ }
+ else
+ Constructor += ", ";
+ Constructor += Name + "(_" + Name + "->__forwarding)";
+ }
+
+ Constructor += " {\n";
+ if (GlobalVarDecl)
+ Constructor += " impl.isa = &_NSConcreteGlobalBlock;\n";
+ else
+ Constructor += " impl.isa = &_NSConcreteStackBlock;\n";
+ Constructor += " impl.Flags = flags;\n impl.FuncPtr = fp;\n";
+
+ Constructor += " Desc = desc;\n";
+ } else {
+ // Finish writing the constructor.
+ Constructor += ", int flags=0) {\n";
+ if (GlobalVarDecl)
+ Constructor += " impl.isa = &_NSConcreteGlobalBlock;\n";
+ else
+ Constructor += " impl.isa = &_NSConcreteStackBlock;\n";
+ Constructor += " impl.Flags = flags;\n impl.FuncPtr = fp;\n";
+ Constructor += " Desc = desc;\n";
+ }
+ Constructor += " ";
+ Constructor += "}\n";
+ S += Constructor;
+ S += "};\n";
+ return S;
+}
+
+std::string RewriteObjC::SynthesizeBlockDescriptor(std::string DescTag,
+ std::string ImplTag, int i,
+ StringRef FunName,
+ unsigned hasCopy) {
+ std::string S = "\nstatic struct " + DescTag;
+
+ S += " {\n unsigned long reserved;\n";
+ S += " unsigned long Block_size;\n";
+ if (hasCopy) {
+ S += " void (*copy)(struct ";
+ S += ImplTag; S += "*, struct ";
+ S += ImplTag; S += "*);\n";
+
+ S += " void (*dispose)(struct ";
+ S += ImplTag; S += "*);\n";
+ }
+ S += "} ";
+
+ S += DescTag + "_DATA = { 0, sizeof(struct ";
+ S += ImplTag + ")";
+ if (hasCopy) {
+ S += ", __" + FunName.str() + "_block_copy_" + utostr(i);
+ S += ", __" + FunName.str() + "_block_dispose_" + utostr(i);
+ }
+ S += "};\n";
+ return S;
+}
+
+void RewriteObjC::SynthesizeBlockLiterals(SourceLocation FunLocStart,
+ StringRef FunName) {
+ // Insert declaration for the function in which block literal is used.
+ if (CurFunctionDeclToDeclareForBlock && !Blocks.empty())
+ RewriteBlockLiteralFunctionDecl(CurFunctionDeclToDeclareForBlock);
+ bool RewriteSC = (GlobalVarDecl &&
+ !Blocks.empty() &&
+ GlobalVarDecl->getStorageClass() == SC_Static &&
+ GlobalVarDecl->getType().getCVRQualifiers());
+ if (RewriteSC) {
+ std::string SC(" void __");
+ SC += GlobalVarDecl->getNameAsString();
+ SC += "() {}";
+ InsertText(FunLocStart, SC);
+ }
+
+ // Insert closures that were part of the function.
+ for (unsigned i = 0, count=0; i < Blocks.size(); i++) {
+ CollectBlockDeclRefInfo(Blocks[i]);
+ // Need to copy-in the inner copied-in variables not actually used in this
+ // block.
+ for (int j = 0; j < InnerDeclRefsCount[i]; j++) {
+ DeclRefExpr *Exp = InnerDeclRefs[count++];
+ ValueDecl *VD = Exp->getDecl();
+ BlockDeclRefs.push_back(Exp);
+ if (!VD->hasAttr<BlocksAttr>() && !BlockByCopyDeclsPtrSet.count(VD)) {
+ BlockByCopyDeclsPtrSet.insert(VD);
+ BlockByCopyDecls.push_back(VD);
+ }
+ if (VD->hasAttr<BlocksAttr>() && !BlockByRefDeclsPtrSet.count(VD)) {
+ BlockByRefDeclsPtrSet.insert(VD);
+ BlockByRefDecls.push_back(VD);
+ }
+ // imported objects in the inner blocks not used in the outer
+ // blocks must be copied/disposed in the outer block as well.
+ if (VD->hasAttr<BlocksAttr>() ||
+ VD->getType()->isObjCObjectPointerType() ||
+ VD->getType()->isBlockPointerType())
+ ImportedBlockDecls.insert(VD);
+ }
+
+ std::string ImplTag = "__" + FunName.str() + "_block_impl_" + utostr(i);
+ std::string DescTag = "__" + FunName.str() + "_block_desc_" + utostr(i);
+
+ std::string CI = SynthesizeBlockImpl(Blocks[i], ImplTag, DescTag);
+
+ InsertText(FunLocStart, CI);
+
+ std::string CF = SynthesizeBlockFunc(Blocks[i], i, FunName, ImplTag);
+
+ InsertText(FunLocStart, CF);
+
+ if (ImportedBlockDecls.size()) {
+ std::string HF = SynthesizeBlockHelperFuncs(Blocks[i], i, FunName, ImplTag);
+ InsertText(FunLocStart, HF);
+ }
+ std::string BD = SynthesizeBlockDescriptor(DescTag, ImplTag, i, FunName,
+ ImportedBlockDecls.size() > 0);
+ InsertText(FunLocStart, BD);
+
+ BlockDeclRefs.clear();
+ BlockByRefDecls.clear();
+ BlockByRefDeclsPtrSet.clear();
+ BlockByCopyDecls.clear();
+ BlockByCopyDeclsPtrSet.clear();
+ ImportedBlockDecls.clear();
+ }
+ if (RewriteSC) {
+ // Must insert any 'const/volatile/static here. Since it has been
+ // removed as result of rewriting of block literals.
+ std::string SC;
+ if (GlobalVarDecl->getStorageClass() == SC_Static)
+ SC = "static ";
+ if (GlobalVarDecl->getType().isConstQualified())
+ SC += "const ";
+ if (GlobalVarDecl->getType().isVolatileQualified())
+ SC += "volatile ";
+ if (GlobalVarDecl->getType().isRestrictQualified())
+ SC += "restrict ";
+ InsertText(FunLocStart, SC);
+ }
+
+ Blocks.clear();
+ InnerDeclRefsCount.clear();
+ InnerDeclRefs.clear();
+ RewrittenBlockExprs.clear();
+}
+
+void RewriteObjC::InsertBlockLiteralsWithinFunction(FunctionDecl *FD) {
+ SourceLocation FunLocStart = FD->getTypeSpecStartLoc();
+ StringRef FuncName = FD->getName();
+
+ SynthesizeBlockLiterals(FunLocStart, FuncName);
+}
+
+static void BuildUniqueMethodName(std::string &Name,
+ ObjCMethodDecl *MD) {
+ ObjCInterfaceDecl *IFace = MD->getClassInterface();
+ Name = IFace->getName();
+ Name += "__" + MD->getSelector().getAsString();
+ // Convert colons to underscores.
+ std::string::size_type loc = 0;
+ while ((loc = Name.find(":", loc)) != std::string::npos)
+ Name.replace(loc, 1, "_");
+}
+
+void RewriteObjC::InsertBlockLiteralsWithinMethod(ObjCMethodDecl *MD) {
+ //fprintf(stderr,"In InsertBlockLiteralsWitinMethod\n");
+ //SourceLocation FunLocStart = MD->getLocStart();
+ SourceLocation FunLocStart = MD->getLocStart();
+ std::string FuncName;
+ BuildUniqueMethodName(FuncName, MD);
+ SynthesizeBlockLiterals(FunLocStart, FuncName);
+}
+
+void RewriteObjC::GetBlockDeclRefExprs(Stmt *S) {
+ for (Stmt::child_range CI = S->children(); CI; ++CI)
+ if (*CI) {
+ if (BlockExpr *CBE = dyn_cast<BlockExpr>(*CI))
+ GetBlockDeclRefExprs(CBE->getBody());
+ else
+ GetBlockDeclRefExprs(*CI);
+ }
+ // Handle specific things.
+ if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
+ if (DRE->refersToEnclosingLocal()) {
+ // FIXME: Handle enums.
+ if (!isa<FunctionDecl>(DRE->getDecl()))
+ BlockDeclRefs.push_back(DRE);
+ if (HasLocalVariableExternalStorage(DRE->getDecl()))
+ BlockDeclRefs.push_back(DRE);
+ }
+ }
+
+ return;
+}
+
+void RewriteObjC::GetInnerBlockDeclRefExprs(Stmt *S,
+ SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs,
+ llvm::SmallPtrSetImpl<const DeclContext *> &InnerContexts) {
+ for (Stmt::child_range CI = S->children(); CI; ++CI)
+ if (*CI) {
+ if (BlockExpr *CBE = dyn_cast<BlockExpr>(*CI)) {
+ InnerContexts.insert(cast<DeclContext>(CBE->getBlockDecl()));
+ GetInnerBlockDeclRefExprs(CBE->getBody(),
+ InnerBlockDeclRefs,
+ InnerContexts);
+ }
+ else
+ GetInnerBlockDeclRefExprs(*CI,
+ InnerBlockDeclRefs,
+ InnerContexts);
+
+ }
+ // Handle specific things.
+ if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
+ if (DRE->refersToEnclosingLocal()) {
+ if (!isa<FunctionDecl>(DRE->getDecl()) &&
+ !InnerContexts.count(DRE->getDecl()->getDeclContext()))
+ InnerBlockDeclRefs.push_back(DRE);
+ if (VarDecl *Var = dyn_cast<VarDecl>(DRE->getDecl()))
+ if (Var->isFunctionOrMethodVarDecl())
+ ImportedLocalExternalDecls.insert(Var);
+ }
+ }
+
+ return;
+}
+
+/// convertFunctionTypeOfBlocks - This routine converts a function type
+/// whose result type may be a block pointer or whose argument type(s)
+/// might be block pointers to an equivalent function type replacing
+/// all block pointers to function pointers.
+QualType RewriteObjC::convertFunctionTypeOfBlocks(const FunctionType *FT) {
+ const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT);
+ // FTP will be null for closures that don't take arguments.
+ // Generate a funky cast.
+ SmallVector<QualType, 8> ArgTypes;
+ QualType Res = FT->getReturnType();
+ bool HasBlockType = convertBlockPointerToFunctionPointer(Res);
+
+ if (FTP) {
+ for (auto &I : FTP->param_types()) {
+ QualType t = I;
+ // Make sure we convert "t (^)(...)" to "t (*)(...)".
+ if (convertBlockPointerToFunctionPointer(t))
+ HasBlockType = true;
+ ArgTypes.push_back(t);
+ }
+ }
+ QualType FuncType;
+ // FIXME. Does this work if block takes no argument but has a return type
+ // which is of block type?
+ if (HasBlockType)
+ FuncType = getSimpleFunctionType(Res, ArgTypes);
+ else FuncType = QualType(FT, 0);
+ return FuncType;
+}
+
+Stmt *RewriteObjC::SynthesizeBlockCall(CallExpr *Exp, const Expr *BlockExp) {
+ // Navigate to relevant type information.
+ const BlockPointerType *CPT = nullptr;
+
+ if (const DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(BlockExp)) {
+ CPT = DRE->getType()->getAs<BlockPointerType>();
+ } else if (const MemberExpr *MExpr = dyn_cast<MemberExpr>(BlockExp)) {
+ CPT = MExpr->getType()->getAs<BlockPointerType>();
+ }
+ else if (const ParenExpr *PRE = dyn_cast<ParenExpr>(BlockExp)) {
+ return SynthesizeBlockCall(Exp, PRE->getSubExpr());
+ }
+ else if (const ImplicitCastExpr *IEXPR = dyn_cast<ImplicitCastExpr>(BlockExp))
+ CPT = IEXPR->getType()->getAs<BlockPointerType>();
+ else if (const ConditionalOperator *CEXPR =
+ dyn_cast<ConditionalOperator>(BlockExp)) {
+ Expr *LHSExp = CEXPR->getLHS();
+ Stmt *LHSStmt = SynthesizeBlockCall(Exp, LHSExp);
+ Expr *RHSExp = CEXPR->getRHS();
+ Stmt *RHSStmt = SynthesizeBlockCall(Exp, RHSExp);
+ Expr *CONDExp = CEXPR->getCond();
+ ConditionalOperator *CondExpr =
+ new (Context) ConditionalOperator(CONDExp,
+ SourceLocation(), cast<Expr>(LHSStmt),
+ SourceLocation(), cast<Expr>(RHSStmt),
+ Exp->getType(), VK_RValue, OK_Ordinary);
+ return CondExpr;
+ } else if (const ObjCIvarRefExpr *IRE = dyn_cast<ObjCIvarRefExpr>(BlockExp)) {
+ CPT = IRE->getType()->getAs<BlockPointerType>();
+ } else if (const PseudoObjectExpr *POE
+ = dyn_cast<PseudoObjectExpr>(BlockExp)) {
+ CPT = POE->getType()->castAs<BlockPointerType>();
+ } else {
+ assert(1 && "RewriteBlockClass: Bad type");
+ }
+ assert(CPT && "RewriteBlockClass: Bad type");
+ const FunctionType *FT = CPT->getPointeeType()->getAs<FunctionType>();
+ assert(FT && "RewriteBlockClass: Bad type");
+ const FunctionProtoType *FTP = dyn_cast<FunctionProtoType>(FT);
+ // FTP will be null for closures that don't take arguments.
+
+ RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get("__block_impl"));
+ QualType PtrBlock = Context->getPointerType(Context->getTagDeclType(RD));
+
+ // Generate a funky cast.
+ SmallVector<QualType, 8> ArgTypes;
+
+ // Push the block argument type.
+ ArgTypes.push_back(PtrBlock);
+ if (FTP) {
+ for (auto &I : FTP->param_types()) {
+ QualType t = I;
+ // Make sure we convert "t (^)(...)" to "t (*)(...)".
+ if (!convertBlockPointerToFunctionPointer(t))
+ convertToUnqualifiedObjCType(t);
+ ArgTypes.push_back(t);
+ }
+ }
+ // Now do the pointer to function cast.
+ QualType PtrToFuncCastType = getSimpleFunctionType(Exp->getType(), ArgTypes);
+
+ PtrToFuncCastType = Context->getPointerType(PtrToFuncCastType);
+
+ CastExpr *BlkCast = NoTypeInfoCStyleCastExpr(Context, PtrBlock,
+ CK_BitCast,
+ const_cast<Expr*>(BlockExp));
+ // Don't forget the parens to enforce the proper binding.
+ ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
+ BlkCast);
+ //PE->dump();
+
+ FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
+ SourceLocation(),
+ &Context->Idents.get("FuncPtr"),
+ Context->VoidPtrTy, nullptr,
+ /*BitWidth=*/nullptr, /*Mutable=*/true,
+ ICIS_NoInit);
+ MemberExpr *ME = new (Context) MemberExpr(PE, true, FD, SourceLocation(),
+ FD->getType(), VK_LValue,
+ OK_Ordinary);
+
+
+ CastExpr *FunkCast = NoTypeInfoCStyleCastExpr(Context, PtrToFuncCastType,
+ CK_BitCast, ME);
+ PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(), FunkCast);
+
+ SmallVector<Expr*, 8> BlkExprs;
+ // Add the implicit argument.
+ BlkExprs.push_back(BlkCast);
+ // Add the user arguments.
+ for (CallExpr::arg_iterator I = Exp->arg_begin(),
+ E = Exp->arg_end(); I != E; ++I) {
+ BlkExprs.push_back(*I);
+ }
+ CallExpr *CE = new (Context) CallExpr(*Context, PE, BlkExprs,
+ Exp->getType(), VK_RValue,
+ SourceLocation());
+ return CE;
+}
+
+// We need to return the rewritten expression to handle cases where the
+// BlockDeclRefExpr is embedded in another expression being rewritten.
+// For example:
+//
+// int main() {
+// __block Foo *f;
+// __block int i;
+//
+// void (^myblock)() = ^() {
+// [f test]; // f is a BlockDeclRefExpr embedded in a message (which is being rewritten).
+// i = 77;
+// };
+//}
+Stmt *RewriteObjC::RewriteBlockDeclRefExpr(DeclRefExpr *DeclRefExp) {
+ // Rewrite the byref variable into BYREFVAR->__forwarding->BYREFVAR
+ // for each DeclRefExp where BYREFVAR is name of the variable.
+ ValueDecl *VD = DeclRefExp->getDecl();
+ bool isArrow = DeclRefExp->refersToEnclosingLocal();
+
+ FieldDecl *FD = FieldDecl::Create(*Context, nullptr, SourceLocation(),
+ SourceLocation(),
+ &Context->Idents.get("__forwarding"),
+ Context->VoidPtrTy, nullptr,
+ /*BitWidth=*/nullptr, /*Mutable=*/true,
+ ICIS_NoInit);
+ MemberExpr *ME = new (Context) MemberExpr(DeclRefExp, isArrow,
+ FD, SourceLocation(),
+ FD->getType(), VK_LValue,
+ OK_Ordinary);
+
+ StringRef Name = VD->getName();
+ FD = FieldDecl::Create(*Context, nullptr, SourceLocation(), SourceLocation(),
+ &Context->Idents.get(Name),
+ Context->VoidPtrTy, nullptr,
+ /*BitWidth=*/nullptr, /*Mutable=*/true,
+ ICIS_NoInit);
+ ME = new (Context) MemberExpr(ME, true, FD, SourceLocation(),
+ DeclRefExp->getType(), VK_LValue, OK_Ordinary);
+
+
+
+ // Need parens to enforce precedence.
+ ParenExpr *PE = new (Context) ParenExpr(DeclRefExp->getExprLoc(),
+ DeclRefExp->getExprLoc(),
+ ME);
+ ReplaceStmt(DeclRefExp, PE);
+ return PE;
+}
+
+// Rewrites the imported local variable V with external storage
+// (static, extern, etc.) as *V
+//
+Stmt *RewriteObjC::RewriteLocalVariableExternalStorage(DeclRefExpr *DRE) {
+ ValueDecl *VD = DRE->getDecl();
+ if (VarDecl *Var = dyn_cast<VarDecl>(VD))
+ if (!ImportedLocalExternalDecls.count(Var))
+ return DRE;
+ Expr *Exp = new (Context) UnaryOperator(DRE, UO_Deref, DRE->getType(),
+ VK_LValue, OK_Ordinary,
+ DRE->getLocation());
+ // Need parens to enforce precedence.
+ ParenExpr *PE = new (Context) ParenExpr(SourceLocation(), SourceLocation(),
+ Exp);
+ ReplaceStmt(DRE, PE);
+ return PE;
+}
+
+void RewriteObjC::RewriteCastExpr(CStyleCastExpr *CE) {
+ SourceLocation LocStart = CE->getLParenLoc();
+ SourceLocation LocEnd = CE->getRParenLoc();
+
+ // Need to avoid trying to rewrite synthesized casts.
+ if (LocStart.isInvalid())
+ return;
+ // Need to avoid trying to rewrite casts contained in macros.
+ if (!Rewriter::isRewritable(LocStart) || !Rewriter::isRewritable(LocEnd))
+ return;
+
+ const char *startBuf = SM->getCharacterData(LocStart);
+ const char *endBuf = SM->getCharacterData(LocEnd);
+ QualType QT = CE->getType();
+ const Type* TypePtr = QT->getAs<Type>();
+ if (isa<TypeOfExprType>(TypePtr)) {
+ const TypeOfExprType *TypeOfExprTypePtr = cast<TypeOfExprType>(TypePtr);
+ QT = TypeOfExprTypePtr->getUnderlyingExpr()->getType();
+ std::string TypeAsString = "(";
+ RewriteBlockPointerType(TypeAsString, QT);
+ TypeAsString += ")";
+ ReplaceText(LocStart, endBuf-startBuf+1, TypeAsString);
+ return;
+ }
+ // advance the location to startArgList.
+ const char *argPtr = startBuf;
+
+ while (*argPtr++ && (argPtr < endBuf)) {
+ switch (*argPtr) {
+ case '^':
+ // Replace the '^' with '*'.
+ LocStart = LocStart.getLocWithOffset(argPtr-startBuf);
+ ReplaceText(LocStart, 1, "*");
+ break;
+ }
+ }
+ return;
+}
+
+void RewriteObjC::RewriteBlockPointerFunctionArgs(FunctionDecl *FD) {
+ SourceLocation DeclLoc = FD->getLocation();
+ unsigned parenCount = 0;
+
+ // We have 1 or more arguments that have closure pointers.
+ const char *startBuf = SM->getCharacterData(DeclLoc);
+ const char *startArgList = strchr(startBuf, '(');
+
+ assert((*startArgList == '(') && "Rewriter fuzzy parser confused");
+
+ parenCount++;
+ // advance the location to startArgList.
+ DeclLoc = DeclLoc.getLocWithOffset(startArgList-startBuf);
+ assert((DeclLoc.isValid()) && "Invalid DeclLoc");
+
+ const char *argPtr = startArgList;
+
+ while (*argPtr++ && parenCount) {
+ switch (*argPtr) {
+ case '^':
+ // Replace the '^' with '*'.
+ DeclLoc = DeclLoc.getLocWithOffset(argPtr-startArgList);
+ ReplaceText(DeclLoc, 1, "*");
+ break;
+ case '(':
+ parenCount++;
+ break;
+ case ')':
+ parenCount--;
+ break;
+ }
+ }
+ return;
+}
+
+bool RewriteObjC::PointerTypeTakesAnyBlockArguments(QualType QT) {
+ const FunctionProtoType *FTP;
+ const PointerType *PT = QT->getAs<PointerType>();
+ if (PT) {
+ FTP = PT->getPointeeType()->getAs<FunctionProtoType>();
+ } else {
+ const BlockPointerType *BPT = QT->getAs<BlockPointerType>();
+ assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type");
+ FTP = BPT->getPointeeType()->getAs<FunctionProtoType>();
+ }
+ if (FTP) {
+ for (const auto &I : FTP->param_types())
+ if (isTopLevelBlockPointerType(I))
+ return true;
+ }
+ return false;
+}
+
+bool RewriteObjC::PointerTypeTakesAnyObjCQualifiedType(QualType QT) {
+ const FunctionProtoType *FTP;
+ const PointerType *PT = QT->getAs<PointerType>();
+ if (PT) {
+ FTP = PT->getPointeeType()->getAs<FunctionProtoType>();
+ } else {
+ const BlockPointerType *BPT = QT->getAs<BlockPointerType>();
+ assert(BPT && "BlockPointerTypeTakeAnyBlockArguments(): not a block pointer type");
+ FTP = BPT->getPointeeType()->getAs<FunctionProtoType>();
+ }
+ if (FTP) {
+ for (const auto &I : FTP->param_types()) {
+ if (I->isObjCQualifiedIdType())
+ return true;
+ if (I->isObjCObjectPointerType() &&
+ I->getPointeeType()->isObjCQualifiedInterfaceType())
+ return true;
+ }
+
+ }
+ return false;
+}
+
+void RewriteObjC::GetExtentOfArgList(const char *Name, const char *&LParen,
+ const char *&RParen) {
+ const char *argPtr = strchr(Name, '(');
+ assert((*argPtr == '(') && "Rewriter fuzzy parser confused");
+
+ LParen = argPtr; // output the start.
+ argPtr++; // skip past the left paren.
+ unsigned parenCount = 1;
+
+ while (*argPtr && parenCount) {
+ switch (*argPtr) {
+ case '(': parenCount++; break;
+ case ')': parenCount--; break;
+ default: break;
+ }
+ if (parenCount) argPtr++;
+ }
+ assert((*argPtr == ')') && "Rewriter fuzzy parser confused");
+ RParen = argPtr; // output the end
+}
+
+void RewriteObjC::RewriteBlockPointerDecl(NamedDecl *ND) {
+ if (FunctionDecl *FD = dyn_cast<FunctionDecl>(ND)) {
+ RewriteBlockPointerFunctionArgs(FD);
+ return;
+ }
+ // Handle Variables and Typedefs.
+ SourceLocation DeclLoc = ND->getLocation();
+ QualType DeclT;
+ if (VarDecl *VD = dyn_cast<VarDecl>(ND))
+ DeclT = VD->getType();
+ else if (TypedefNameDecl *TDD = dyn_cast<TypedefNameDecl>(ND))
+ DeclT = TDD->getUnderlyingType();
+ else if (FieldDecl *FD = dyn_cast<FieldDecl>(ND))
+ DeclT = FD->getType();
+ else
+ llvm_unreachable("RewriteBlockPointerDecl(): Decl type not yet handled");
+
+ const char *startBuf = SM->getCharacterData(DeclLoc);
+ const char *endBuf = startBuf;
+ // scan backward (from the decl location) for the end of the previous decl.
+ while (*startBuf != '^' && *startBuf != ';' && startBuf != MainFileStart)
+ startBuf--;
+ SourceLocation Start = DeclLoc.getLocWithOffset(startBuf-endBuf);
+ std::string buf;
+ unsigned OrigLength=0;
+ // *startBuf != '^' if we are dealing with a pointer to function that
+ // may take block argument types (which will be handled below).
+ if (*startBuf == '^') {
+ // Replace the '^' with '*', computing a negative offset.
+ buf = '*';
+ startBuf++;
+ OrigLength++;
+ }
+ while (*startBuf != ')') {
+ buf += *startBuf;
+ startBuf++;
+ OrigLength++;
+ }
+ buf += ')';
+ OrigLength++;
+
+ if (PointerTypeTakesAnyBlockArguments(DeclT) ||
+ PointerTypeTakesAnyObjCQualifiedType(DeclT)) {
+ // Replace the '^' with '*' for arguments.
+ // Replace id<P> with id/*<>*/
+ DeclLoc = ND->getLocation();
+ startBuf = SM->getCharacterData(DeclLoc);
+ const char *argListBegin, *argListEnd;
+ GetExtentOfArgList(startBuf, argListBegin, argListEnd);
+ while (argListBegin < argListEnd) {
+ if (*argListBegin == '^')
+ buf += '*';
+ else if (*argListBegin == '<') {
+ buf += "/*";
+ buf += *argListBegin++;
+ OrigLength++;
+ while (*argListBegin != '>') {
+ buf += *argListBegin++;
+ OrigLength++;
+ }
+ buf += *argListBegin;
+ buf += "*/";
+ }
+ else
+ buf += *argListBegin;
+ argListBegin++;
+ OrigLength++;
+ }
+ buf += ')';
+ OrigLength++;
+ }
+ ReplaceText(Start, OrigLength, buf);
+
+ return;
+}
+
+
+/// SynthesizeByrefCopyDestroyHelper - This routine synthesizes:
+/// void __Block_byref_id_object_copy(struct Block_byref_id_object *dst,
+/// struct Block_byref_id_object *src) {
+/// _Block_object_assign (&_dest->object, _src->object,
+/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT
+/// [|BLOCK_FIELD_IS_WEAK]) // object
+/// _Block_object_assign(&_dest->object, _src->object,
+/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK
+/// [|BLOCK_FIELD_IS_WEAK]) // block
+/// }
+/// And:
+/// void __Block_byref_id_object_dispose(struct Block_byref_id_object *_src) {
+/// _Block_object_dispose(_src->object,
+/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_OBJECT
+/// [|BLOCK_FIELD_IS_WEAK]) // object
+/// _Block_object_dispose(_src->object,
+/// BLOCK_BYREF_CALLER | BLOCK_FIELD_IS_BLOCK
+/// [|BLOCK_FIELD_IS_WEAK]) // block
+/// }
+
+std::string RewriteObjC::SynthesizeByrefCopyDestroyHelper(VarDecl *VD,
+ int flag) {
+ std::string S;
+ if (CopyDestroyCache.count(flag))
+ return S;
+ CopyDestroyCache.insert(flag);
+ S = "static void __Block_byref_id_object_copy_";
+ S += utostr(flag);
+ S += "(void *dst, void *src) {\n";
+
+ // offset into the object pointer is computed as:
+ // void * + void* + int + int + void* + void *
+ unsigned IntSize =
+ static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
+ unsigned VoidPtrSize =
+ static_cast<unsigned>(Context->getTypeSize(Context->VoidPtrTy));
+
+ unsigned offset = (VoidPtrSize*4 + IntSize + IntSize)/Context->getCharWidth();
+ S += " _Block_object_assign((char*)dst + ";
+ S += utostr(offset);
+ S += ", *(void * *) ((char*)src + ";
+ S += utostr(offset);
+ S += "), ";
+ S += utostr(flag);
+ S += ");\n}\n";
+
+ S += "static void __Block_byref_id_object_dispose_";
+ S += utostr(flag);
+ S += "(void *src) {\n";
+ S += " _Block_object_dispose(*(void * *) ((char*)src + ";
+ S += utostr(offset);
+ S += "), ";
+ S += utostr(flag);
+ S += ");\n}\n";
+ return S;
+}
+
+/// RewriteByRefVar - For each __block typex ND variable this routine transforms
+/// the declaration into:
+/// struct __Block_byref_ND {
+/// void *__isa; // NULL for everything except __weak pointers
+/// struct __Block_byref_ND *__forwarding;
+/// int32_t __flags;
+/// int32_t __size;
+/// void *__Block_byref_id_object_copy; // If variable is __block ObjC object
+/// void *__Block_byref_id_object_dispose; // If variable is __block ObjC object
+/// typex ND;
+/// };
+///
+/// It then replaces declaration of ND variable with:
+/// struct __Block_byref_ND ND = {__isa=0B, __forwarding=&ND, __flags=some_flag,
+/// __size=sizeof(struct __Block_byref_ND),
+/// ND=initializer-if-any};
+///
+///
+void RewriteObjC::RewriteByRefVar(VarDecl *ND) {
+ // Insert declaration for the function in which block literal is
+ // used.
+ if (CurFunctionDeclToDeclareForBlock)
+ RewriteBlockLiteralFunctionDecl(CurFunctionDeclToDeclareForBlock);
+ int flag = 0;
+ int isa = 0;
+ SourceLocation DeclLoc = ND->getTypeSpecStartLoc();
+ if (DeclLoc.isInvalid())
+ // If type location is missing, it is because of missing type (a warning).
+ // Use variable's location which is good for this case.
+ DeclLoc = ND->getLocation();
+ const char *startBuf = SM->getCharacterData(DeclLoc);
+ SourceLocation X = ND->getLocEnd();
+ X = SM->getExpansionLoc(X);
+ const char *endBuf = SM->getCharacterData(X);
+ std::string Name(ND->getNameAsString());
+ std::string ByrefType;
+ RewriteByRefString(ByrefType, Name, ND, true);
+ ByrefType += " {\n";
+ ByrefType += " void *__isa;\n";
+ RewriteByRefString(ByrefType, Name, ND);
+ ByrefType += " *__forwarding;\n";
+ ByrefType += " int __flags;\n";
+ ByrefType += " int __size;\n";
+ // Add void *__Block_byref_id_object_copy;
+ // void *__Block_byref_id_object_dispose; if needed.
+ QualType Ty = ND->getType();
+ bool HasCopyAndDispose = Context->BlockRequiresCopying(Ty, ND);
+ if (HasCopyAndDispose) {
+ ByrefType += " void (*__Block_byref_id_object_copy)(void*, void*);\n";
+ ByrefType += " void (*__Block_byref_id_object_dispose)(void*);\n";
+ }
+
+ QualType T = Ty;
+ (void)convertBlockPointerToFunctionPointer(T);
+ T.getAsStringInternal(Name, Context->getPrintingPolicy());
+
+ ByrefType += " " + Name + ";\n";
+ ByrefType += "};\n";
+ // Insert this type in global scope. It is needed by helper function.
+ SourceLocation FunLocStart;
+ if (CurFunctionDef)
+ FunLocStart = CurFunctionDef->getTypeSpecStartLoc();
+ else {
+ assert(CurMethodDef && "RewriteByRefVar - CurMethodDef is null");
+ FunLocStart = CurMethodDef->getLocStart();
+ }
+ InsertText(FunLocStart, ByrefType);
+ if (Ty.isObjCGCWeak()) {
+ flag |= BLOCK_FIELD_IS_WEAK;
+ isa = 1;
+ }
+
+ if (HasCopyAndDispose) {
+ flag = BLOCK_BYREF_CALLER;
+ QualType Ty = ND->getType();
+ // FIXME. Handle __weak variable (BLOCK_FIELD_IS_WEAK) as well.
+ if (Ty->isBlockPointerType())
+ flag |= BLOCK_FIELD_IS_BLOCK;
+ else
+ flag |= BLOCK_FIELD_IS_OBJECT;
+ std::string HF = SynthesizeByrefCopyDestroyHelper(ND, flag);
+ if (!HF.empty())
+ InsertText(FunLocStart, HF);
+ }
+
+ // struct __Block_byref_ND ND =
+ // {0, &ND, some_flag, __size=sizeof(struct __Block_byref_ND),
+ // initializer-if-any};
+ bool hasInit = (ND->getInit() != nullptr);
+ unsigned flags = 0;
+ if (HasCopyAndDispose)
+ flags |= BLOCK_HAS_COPY_DISPOSE;
+ Name = ND->getNameAsString();
+ ByrefType.clear();
+ RewriteByRefString(ByrefType, Name, ND);
+ std::string ForwardingCastType("(");
+ ForwardingCastType += ByrefType + " *)";
+ if (!hasInit) {
+ ByrefType += " " + Name + " = {(void*)";
+ ByrefType += utostr(isa);
+ ByrefType += "," + ForwardingCastType + "&" + Name + ", ";
+ ByrefType += utostr(flags);
+ ByrefType += ", ";
+ ByrefType += "sizeof(";
+ RewriteByRefString(ByrefType, Name, ND);
+ ByrefType += ")";
+ if (HasCopyAndDispose) {
+ ByrefType += ", __Block_byref_id_object_copy_";
+ ByrefType += utostr(flag);
+ ByrefType += ", __Block_byref_id_object_dispose_";
+ ByrefType += utostr(flag);
+ }
+ ByrefType += "};\n";
+ unsigned nameSize = Name.size();
+ // for block or function pointer declaration. Name is aleady
+ // part of the declaration.
+ if (Ty->isBlockPointerType() || Ty->isFunctionPointerType())
+ nameSize = 1;
+ ReplaceText(DeclLoc, endBuf-startBuf+nameSize, ByrefType);
+ }
+ else {
+ SourceLocation startLoc;
+ Expr *E = ND->getInit();
+ if (const CStyleCastExpr *ECE = dyn_cast<CStyleCastExpr>(E))
+ startLoc = ECE->getLParenLoc();
+ else
+ startLoc = E->getLocStart();
+ startLoc = SM->getExpansionLoc(startLoc);
+ endBuf = SM->getCharacterData(startLoc);
+ ByrefType += " " + Name;
+ ByrefType += " = {(void*)";
+ ByrefType += utostr(isa);
+ ByrefType += "," + ForwardingCastType + "&" + Name + ", ";
+ ByrefType += utostr(flags);
+ ByrefType += ", ";
+ ByrefType += "sizeof(";
+ RewriteByRefString(ByrefType, Name, ND);
+ ByrefType += "), ";
+ if (HasCopyAndDispose) {
+ ByrefType += "__Block_byref_id_object_copy_";
+ ByrefType += utostr(flag);
+ ByrefType += ", __Block_byref_id_object_dispose_";
+ ByrefType += utostr(flag);
+ ByrefType += ", ";
+ }
+ ReplaceText(DeclLoc, endBuf-startBuf, ByrefType);
+
+ // Complete the newly synthesized compound expression by inserting a right
+ // curly brace before the end of the declaration.
+ // FIXME: This approach avoids rewriting the initializer expression. It
+ // also assumes there is only one declarator. For example, the following
+ // isn't currently supported by this routine (in general):
+ //
+ // double __block BYREFVAR = 1.34, BYREFVAR2 = 1.37;
+ //
+ const char *startInitializerBuf = SM->getCharacterData(startLoc);
+ const char *semiBuf = strchr(startInitializerBuf, ';');
+ assert((*semiBuf == ';') && "RewriteByRefVar: can't find ';'");
+ SourceLocation semiLoc =
+ startLoc.getLocWithOffset(semiBuf-startInitializerBuf);
+
+ InsertText(semiLoc, "}");
+ }
+ return;
+}
+
+void RewriteObjC::CollectBlockDeclRefInfo(BlockExpr *Exp) {
+ // Add initializers for any closure decl refs.
+ GetBlockDeclRefExprs(Exp->getBody());
+ if (BlockDeclRefs.size()) {
+ // Unique all "by copy" declarations.
+ for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
+ if (!BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>()) {
+ if (!BlockByCopyDeclsPtrSet.count(BlockDeclRefs[i]->getDecl())) {
+ BlockByCopyDeclsPtrSet.insert(BlockDeclRefs[i]->getDecl());
+ BlockByCopyDecls.push_back(BlockDeclRefs[i]->getDecl());
+ }
+ }
+ // Unique all "by ref" declarations.
+ for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
+ if (BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>()) {
+ if (!BlockByRefDeclsPtrSet.count(BlockDeclRefs[i]->getDecl())) {
+ BlockByRefDeclsPtrSet.insert(BlockDeclRefs[i]->getDecl());
+ BlockByRefDecls.push_back(BlockDeclRefs[i]->getDecl());
+ }
+ }
+ // Find any imported blocks...they will need special attention.
+ for (unsigned i = 0; i < BlockDeclRefs.size(); i++)
+ if (BlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>() ||
+ BlockDeclRefs[i]->getType()->isObjCObjectPointerType() ||
+ BlockDeclRefs[i]->getType()->isBlockPointerType())
+ ImportedBlockDecls.insert(BlockDeclRefs[i]->getDecl());
+ }
+}
+
+FunctionDecl *RewriteObjC::SynthBlockInitFunctionDecl(StringRef name) {
+ IdentifierInfo *ID = &Context->Idents.get(name);
+ QualType FType = Context->getFunctionNoProtoType(Context->VoidPtrTy);
+ return FunctionDecl::Create(*Context, TUDecl, SourceLocation(),
+ SourceLocation(), ID, FType, nullptr, SC_Extern,
+ false, false);
+}
+
+Stmt *RewriteObjC::SynthBlockInitExpr(BlockExpr *Exp,
+ const SmallVectorImpl<DeclRefExpr *> &InnerBlockDeclRefs) {
+ const BlockDecl *block = Exp->getBlockDecl();
+ Blocks.push_back(Exp);
+
+ CollectBlockDeclRefInfo(Exp);
+
+ // Add inner imported variables now used in current block.
+ int countOfInnerDecls = 0;
+ if (!InnerBlockDeclRefs.empty()) {
+ for (unsigned i = 0; i < InnerBlockDeclRefs.size(); i++) {
+ DeclRefExpr *Exp = InnerBlockDeclRefs[i];
+ ValueDecl *VD = Exp->getDecl();
+ if (!VD->hasAttr<BlocksAttr>() && !BlockByCopyDeclsPtrSet.count(VD)) {
+ // We need to save the copied-in variables in nested
+ // blocks because it is needed at the end for some of the API generations.
+ // See SynthesizeBlockLiterals routine.
+ InnerDeclRefs.push_back(Exp); countOfInnerDecls++;
+ BlockDeclRefs.push_back(Exp);
+ BlockByCopyDeclsPtrSet.insert(VD);
+ BlockByCopyDecls.push_back(VD);
+ }
+ if (VD->hasAttr<BlocksAttr>() && !BlockByRefDeclsPtrSet.count(VD)) {
+ InnerDeclRefs.push_back(Exp); countOfInnerDecls++;
+ BlockDeclRefs.push_back(Exp);
+ BlockByRefDeclsPtrSet.insert(VD);
+ BlockByRefDecls.push_back(VD);
+ }
+ }
+ // Find any imported blocks...they will need special attention.
+ for (unsigned i = 0; i < InnerBlockDeclRefs.size(); i++)
+ if (InnerBlockDeclRefs[i]->getDecl()->hasAttr<BlocksAttr>() ||
+ InnerBlockDeclRefs[i]->getType()->isObjCObjectPointerType() ||
+ InnerBlockDeclRefs[i]->getType()->isBlockPointerType())
+ ImportedBlockDecls.insert(InnerBlockDeclRefs[i]->getDecl());
+ }
+ InnerDeclRefsCount.push_back(countOfInnerDecls);
+
+ std::string FuncName;
+
+ if (CurFunctionDef)
+ FuncName = CurFunctionDef->getNameAsString();
+ else if (CurMethodDef)
+ BuildUniqueMethodName(FuncName, CurMethodDef);
+ else if (GlobalVarDecl)
+ FuncName = std::string(GlobalVarDecl->getNameAsString());
+
+ std::string BlockNumber = utostr(Blocks.size()-1);
+
+ std::string Tag = "__" + FuncName + "_block_impl_" + BlockNumber;
+ std::string Func = "__" + FuncName + "_block_func_" + BlockNumber;
+
+ // Get a pointer to the function type so we can cast appropriately.
+ QualType BFT = convertFunctionTypeOfBlocks(Exp->getFunctionType());
+ QualType FType = Context->getPointerType(BFT);
+
+ FunctionDecl *FD;
+ Expr *NewRep;
+
+ // Simulate a constructor call...
+ FD = SynthBlockInitFunctionDecl(Tag);
+ DeclRefExpr *DRE = new (Context) DeclRefExpr(FD, false, FType, VK_RValue,
+ SourceLocation());
+
+ SmallVector<Expr*, 4> InitExprs;
+
+ // Initialize the block function.
+ FD = SynthBlockInitFunctionDecl(Func);
+ DeclRefExpr *Arg = new (Context) DeclRefExpr(FD, false, FD->getType(),
+ VK_LValue, SourceLocation());
+ CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy,
+ CK_BitCast, Arg);
+ InitExprs.push_back(castExpr);
+
+ // Initialize the block descriptor.
+ std::string DescData = "__" + FuncName + "_block_desc_" + BlockNumber + "_DATA";
+
+ VarDecl *NewVD = VarDecl::Create(*Context, TUDecl,
+ SourceLocation(), SourceLocation(),
+ &Context->Idents.get(DescData.c_str()),
+ Context->VoidPtrTy, nullptr,
+ SC_Static);
+ UnaryOperator *DescRefExpr =
+ new (Context) UnaryOperator(new (Context) DeclRefExpr(NewVD, false,
+ Context->VoidPtrTy,
+ VK_LValue,
+ SourceLocation()),
+ UO_AddrOf,
+ Context->getPointerType(Context->VoidPtrTy),
+ VK_RValue, OK_Ordinary,
+ SourceLocation());
+ InitExprs.push_back(DescRefExpr);
+
+ // Add initializers for any closure decl refs.
+ if (BlockDeclRefs.size()) {
+ Expr *Exp;
+ // Output all "by copy" declarations.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByCopyDecls.begin(),
+ E = BlockByCopyDecls.end(); I != E; ++I) {
+ if (isObjCType((*I)->getType())) {
+ // FIXME: Conform to ABI ([[obj retain] autorelease]).
+ FD = SynthBlockInitFunctionDecl((*I)->getName());
+ Exp = new (Context) DeclRefExpr(FD, false, FD->getType(), VK_LValue,
+ SourceLocation());
+ if (HasLocalVariableExternalStorage(*I)) {
+ QualType QT = (*I)->getType();
+ QT = Context->getPointerType(QT);
+ Exp = new (Context) UnaryOperator(Exp, UO_AddrOf, QT, VK_RValue,
+ OK_Ordinary, SourceLocation());
+ }
+ } else if (isTopLevelBlockPointerType((*I)->getType())) {
+ FD = SynthBlockInitFunctionDecl((*I)->getName());
+ Arg = new (Context) DeclRefExpr(FD, false, FD->getType(), VK_LValue,
+ SourceLocation());
+ Exp = NoTypeInfoCStyleCastExpr(Context, Context->VoidPtrTy,
+ CK_BitCast, Arg);
+ } else {
+ FD = SynthBlockInitFunctionDecl((*I)->getName());
+ Exp = new (Context) DeclRefExpr(FD, false, FD->getType(), VK_LValue,
+ SourceLocation());
+ if (HasLocalVariableExternalStorage(*I)) {
+ QualType QT = (*I)->getType();
+ QT = Context->getPointerType(QT);
+ Exp = new (Context) UnaryOperator(Exp, UO_AddrOf, QT, VK_RValue,
+ OK_Ordinary, SourceLocation());
+ }
+
+ }
+ InitExprs.push_back(Exp);
+ }
+ // Output all "by ref" declarations.
+ for (SmallVectorImpl<ValueDecl *>::iterator I = BlockByRefDecls.begin(),
+ E = BlockByRefDecls.end(); I != E; ++I) {
+ ValueDecl *ND = (*I);
+ std::string Name(ND->getNameAsString());
+ std::string RecName;
+ RewriteByRefString(RecName, Name, ND, true);
+ IdentifierInfo *II = &Context->Idents.get(RecName.c_str()
+ + sizeof("struct"));
+ RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ II);
+ assert(RD && "SynthBlockInitExpr(): Can't find RecordDecl");
+ QualType castT = Context->getPointerType(Context->getTagDeclType(RD));
+
+ FD = SynthBlockInitFunctionDecl((*I)->getName());
+ Exp = new (Context) DeclRefExpr(FD, false, FD->getType(), VK_LValue,
+ SourceLocation());
+ bool isNestedCapturedVar = false;
+ if (block)
+ for (const auto &CI : block->captures()) {
+ const VarDecl *variable = CI.getVariable();
+ if (variable == ND && CI.isNested()) {
+ assert (CI.isByRef() &&
+ "SynthBlockInitExpr - captured block variable is not byref");
+ isNestedCapturedVar = true;
+ break;
+ }
+ }
+ // captured nested byref variable has its address passed. Do not take
+ // its address again.
+ if (!isNestedCapturedVar)
+ Exp = new (Context) UnaryOperator(Exp, UO_AddrOf,
+ Context->getPointerType(Exp->getType()),
+ VK_RValue, OK_Ordinary, SourceLocation());
+ Exp = NoTypeInfoCStyleCastExpr(Context, castT, CK_BitCast, Exp);
+ InitExprs.push_back(Exp);
+ }
+ }
+ if (ImportedBlockDecls.size()) {
+ // generate BLOCK_HAS_COPY_DISPOSE(have helper funcs) | BLOCK_HAS_DESCRIPTOR
+ int flag = (BLOCK_HAS_COPY_DISPOSE | BLOCK_HAS_DESCRIPTOR);
+ unsigned IntSize =
+ static_cast<unsigned>(Context->getTypeSize(Context->IntTy));
+ Expr *FlagExp = IntegerLiteral::Create(*Context, llvm::APInt(IntSize, flag),
+ Context->IntTy, SourceLocation());
+ InitExprs.push_back(FlagExp);
+ }
+ NewRep = new (Context) CallExpr(*Context, DRE, InitExprs,
+ FType, VK_LValue, SourceLocation());
+ NewRep = new (Context) UnaryOperator(NewRep, UO_AddrOf,
+ Context->getPointerType(NewRep->getType()),
+ VK_RValue, OK_Ordinary, SourceLocation());
+ NewRep = NoTypeInfoCStyleCastExpr(Context, FType, CK_BitCast,
+ NewRep);
+ BlockDeclRefs.clear();
+ BlockByRefDecls.clear();
+ BlockByRefDeclsPtrSet.clear();
+ BlockByCopyDecls.clear();
+ BlockByCopyDeclsPtrSet.clear();
+ ImportedBlockDecls.clear();
+ return NewRep;
+}
+
+bool RewriteObjC::IsDeclStmtInForeachHeader(DeclStmt *DS) {
+ if (const ObjCForCollectionStmt * CS =
+ dyn_cast<ObjCForCollectionStmt>(Stmts.back()))
+ return CS->getElement() == DS;
+ return false;
+}
+
+//===----------------------------------------------------------------------===//
+// Function Body / Expression rewriting
+//===----------------------------------------------------------------------===//
+
+Stmt *RewriteObjC::RewriteFunctionBodyOrGlobalInitializer(Stmt *S) {
+ if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
+ isa<DoStmt>(S) || isa<ForStmt>(S))
+ Stmts.push_back(S);
+ else if (isa<ObjCForCollectionStmt>(S)) {
+ Stmts.push_back(S);
+ ObjCBcLabelNo.push_back(++BcLabelCount);
+ }
+
+ // Pseudo-object operations and ivar references need special
+ // treatment because we're going to recursively rewrite them.
+ if (PseudoObjectExpr *PseudoOp = dyn_cast<PseudoObjectExpr>(S)) {
+ if (isa<BinaryOperator>(PseudoOp->getSyntacticForm())) {
+ return RewritePropertyOrImplicitSetter(PseudoOp);
+ } else {
+ return RewritePropertyOrImplicitGetter(PseudoOp);
+ }
+ } else if (ObjCIvarRefExpr *IvarRefExpr = dyn_cast<ObjCIvarRefExpr>(S)) {
+ return RewriteObjCIvarRefExpr(IvarRefExpr);
+ }
+
+ SourceRange OrigStmtRange = S->getSourceRange();
+
+ // Perform a bottom up rewrite of all children.
+ for (Stmt::child_range CI = S->children(); CI; ++CI)
+ if (*CI) {
+ Stmt *childStmt = (*CI);
+ Stmt *newStmt = RewriteFunctionBodyOrGlobalInitializer(childStmt);
+ if (newStmt) {
+ *CI = newStmt;
+ }
+ }
+
+ if (BlockExpr *BE = dyn_cast<BlockExpr>(S)) {
+ SmallVector<DeclRefExpr *, 8> InnerBlockDeclRefs;
+ llvm::SmallPtrSet<const DeclContext *, 8> InnerContexts;
+ InnerContexts.insert(BE->getBlockDecl());
+ ImportedLocalExternalDecls.clear();
+ GetInnerBlockDeclRefExprs(BE->getBody(),
+ InnerBlockDeclRefs, InnerContexts);
+ // Rewrite the block body in place.
+ Stmt *SaveCurrentBody = CurrentBody;
+ CurrentBody = BE->getBody();
+ PropParentMap = nullptr;
+ // block literal on rhs of a property-dot-sytax assignment
+ // must be replaced by its synthesize ast so getRewrittenText
+ // works as expected. In this case, what actually ends up on RHS
+ // is the blockTranscribed which is the helper function for the
+ // block literal; as in: self.c = ^() {[ace ARR];};
+ bool saveDisableReplaceStmt = DisableReplaceStmt;
+ DisableReplaceStmt = false;
+ RewriteFunctionBodyOrGlobalInitializer(BE->getBody());
+ DisableReplaceStmt = saveDisableReplaceStmt;
+ CurrentBody = SaveCurrentBody;
+ PropParentMap = nullptr;
+ ImportedLocalExternalDecls.clear();
+ // Now we snarf the rewritten text and stash it away for later use.
+ std::string Str = Rewrite.getRewrittenText(BE->getSourceRange());
+ RewrittenBlockExprs[BE] = Str;
+
+ Stmt *blockTranscribed = SynthBlockInitExpr(BE, InnerBlockDeclRefs);
+
+ //blockTranscribed->dump();
+ ReplaceStmt(S, blockTranscribed);
+ return blockTranscribed;
+ }
+ // Handle specific things.
+ if (ObjCEncodeExpr *AtEncode = dyn_cast<ObjCEncodeExpr>(S))
+ return RewriteAtEncode(AtEncode);
+
+ if (ObjCSelectorExpr *AtSelector = dyn_cast<ObjCSelectorExpr>(S))
+ return RewriteAtSelector(AtSelector);
+
+ if (ObjCStringLiteral *AtString = dyn_cast<ObjCStringLiteral>(S))
+ return RewriteObjCStringLiteral(AtString);
+
+ if (ObjCMessageExpr *MessExpr = dyn_cast<ObjCMessageExpr>(S)) {
+#if 0
+ // Before we rewrite it, put the original message expression in a comment.
+ SourceLocation startLoc = MessExpr->getLocStart();
+ SourceLocation endLoc = MessExpr->getLocEnd();
+
+ const char *startBuf = SM->getCharacterData(startLoc);
+ const char *endBuf = SM->getCharacterData(endLoc);
+
+ std::string messString;
+ messString += "// ";
+ messString.append(startBuf, endBuf-startBuf+1);
+ messString += "\n";
+
+ // FIXME: Missing definition of
+ // InsertText(clang::SourceLocation, char const*, unsigned int).
+ // InsertText(startLoc, messString.c_str(), messString.size());
+ // Tried this, but it didn't work either...
+ // ReplaceText(startLoc, 0, messString.c_str(), messString.size());
+#endif
+ return RewriteMessageExpr(MessExpr);
+ }
+
+ if (ObjCAtTryStmt *StmtTry = dyn_cast<ObjCAtTryStmt>(S))
+ return RewriteObjCTryStmt(StmtTry);
+
+ if (ObjCAtSynchronizedStmt *StmtTry = dyn_cast<ObjCAtSynchronizedStmt>(S))
+ return RewriteObjCSynchronizedStmt(StmtTry);
+
+ if (ObjCAtThrowStmt *StmtThrow = dyn_cast<ObjCAtThrowStmt>(S))
+ return RewriteObjCThrowStmt(StmtThrow);
+
+ if (ObjCProtocolExpr *ProtocolExp = dyn_cast<ObjCProtocolExpr>(S))
+ return RewriteObjCProtocolExpr(ProtocolExp);
+
+ if (ObjCForCollectionStmt *StmtForCollection =
+ dyn_cast<ObjCForCollectionStmt>(S))
+ return RewriteObjCForCollectionStmt(StmtForCollection,
+ OrigStmtRange.getEnd());
+ if (BreakStmt *StmtBreakStmt =
+ dyn_cast<BreakStmt>(S))
+ return RewriteBreakStmt(StmtBreakStmt);
+ if (ContinueStmt *StmtContinueStmt =
+ dyn_cast<ContinueStmt>(S))
+ return RewriteContinueStmt(StmtContinueStmt);
+
+ // Need to check for protocol refs (id <P>, Foo <P> *) in variable decls
+ // and cast exprs.
+ if (DeclStmt *DS = dyn_cast<DeclStmt>(S)) {
+ // FIXME: What we're doing here is modifying the type-specifier that
+ // precedes the first Decl. In the future the DeclGroup should have
+ // a separate type-specifier that we can rewrite.
+ // NOTE: We need to avoid rewriting the DeclStmt if it is within
+ // the context of an ObjCForCollectionStmt. For example:
+ // NSArray *someArray;
+ // for (id <FooProtocol> index in someArray) ;
+ // This is because RewriteObjCForCollectionStmt() does textual rewriting
+ // and it depends on the original text locations/positions.
+ if (Stmts.empty() || !IsDeclStmtInForeachHeader(DS))
+ RewriteObjCQualifiedInterfaceTypes(*DS->decl_begin());
+
+ // Blocks rewrite rules.
+ for (auto *SD : DS->decls()) {
+ if (ValueDecl *ND = dyn_cast<ValueDecl>(SD)) {
+ if (isTopLevelBlockPointerType(ND->getType()))
+ RewriteBlockPointerDecl(ND);
+ else if (ND->getType()->isFunctionPointerType())
+ CheckFunctionPointerDecl(ND->getType(), ND);
+ if (VarDecl *VD = dyn_cast<VarDecl>(SD)) {
+ if (VD->hasAttr<BlocksAttr>()) {
+ static unsigned uniqueByrefDeclCount = 0;
+ assert(!BlockByRefDeclNo.count(ND) &&
+ "RewriteFunctionBodyOrGlobalInitializer: Duplicate byref decl");
+ BlockByRefDeclNo[ND] = uniqueByrefDeclCount++;
+ RewriteByRefVar(VD);
+ }
+ else
+ RewriteTypeOfDecl(VD);
+ }
+ }
+ if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(SD)) {
+ if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
+ RewriteBlockPointerDecl(TD);
+ else if (TD->getUnderlyingType()->isFunctionPointerType())
+ CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
+ }
+ }
+ }
+
+ if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S))
+ RewriteObjCQualifiedInterfaceTypes(CE);
+
+ if (isa<SwitchStmt>(S) || isa<WhileStmt>(S) ||
+ isa<DoStmt>(S) || isa<ForStmt>(S)) {
+ assert(!Stmts.empty() && "Statement stack is empty");
+ assert ((isa<SwitchStmt>(Stmts.back()) || isa<WhileStmt>(Stmts.back()) ||
+ isa<DoStmt>(Stmts.back()) || isa<ForStmt>(Stmts.back()))
+ && "Statement stack mismatch");
+ Stmts.pop_back();
+ }
+ // Handle blocks rewriting.
+ if (DeclRefExpr *DRE = dyn_cast<DeclRefExpr>(S)) {
+ ValueDecl *VD = DRE->getDecl();
+ if (VD->hasAttr<BlocksAttr>())
+ return RewriteBlockDeclRefExpr(DRE);
+ if (HasLocalVariableExternalStorage(VD))
+ return RewriteLocalVariableExternalStorage(DRE);
+ }
+
+ if (CallExpr *CE = dyn_cast<CallExpr>(S)) {
+ if (CE->getCallee()->getType()->isBlockPointerType()) {
+ Stmt *BlockCall = SynthesizeBlockCall(CE, CE->getCallee());
+ ReplaceStmt(S, BlockCall);
+ return BlockCall;
+ }
+ }
+ if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(S)) {
+ RewriteCastExpr(CE);
+ }
+#if 0
+ if (ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(S)) {
+ CastExpr *Replacement = new (Context) CastExpr(ICE->getType(),
+ ICE->getSubExpr(),
+ SourceLocation());
+ // Get the new text.
+ std::string SStr;
+ llvm::raw_string_ostream Buf(SStr);
+ Replacement->printPretty(Buf);
+ const std::string &Str = Buf.str();
+
+ printf("CAST = %s\n", &Str[0]);
+ InsertText(ICE->getSubExpr()->getLocStart(), &Str[0], Str.size());
+ delete S;
+ return Replacement;
+ }
+#endif
+ // Return this stmt unmodified.
+ return S;
+}
+
+void RewriteObjC::RewriteRecordBody(RecordDecl *RD) {
+ for (auto *FD : RD->fields()) {
+ if (isTopLevelBlockPointerType(FD->getType()))
+ RewriteBlockPointerDecl(FD);
+ if (FD->getType()->isObjCQualifiedIdType() ||
+ FD->getType()->isObjCQualifiedInterfaceType())
+ RewriteObjCQualifiedInterfaceTypes(FD);
+ }
+}
+
+/// HandleDeclInMainFile - This is called for each top-level decl defined in the
+/// main file of the input.
+void RewriteObjC::HandleDeclInMainFile(Decl *D) {
+ switch (D->getKind()) {
+ case Decl::Function: {
+ FunctionDecl *FD = cast<FunctionDecl>(D);
+ if (FD->isOverloadedOperator())
+ return;
+
+ // Since function prototypes don't have ParmDecl's, we check the function
+ // prototype. This enables us to rewrite function declarations and
+ // definitions using the same code.
+ RewriteBlocksInFunctionProtoType(FD->getType(), FD);
+
+ if (!FD->isThisDeclarationADefinition())
+ break;
+
+ // FIXME: If this should support Obj-C++, support CXXTryStmt
+ if (CompoundStmt *Body = dyn_cast_or_null<CompoundStmt>(FD->getBody())) {
+ CurFunctionDef = FD;
+ CurFunctionDeclToDeclareForBlock = FD;
+ CurrentBody = Body;
+ Body =
+ cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body));
+ FD->setBody(Body);
+ CurrentBody = nullptr;
+ if (PropParentMap) {
+ delete PropParentMap;
+ PropParentMap = nullptr;
+ }
+ // This synthesizes and inserts the block "impl" struct, invoke function,
+ // and any copy/dispose helper functions.
+ InsertBlockLiteralsWithinFunction(FD);
+ CurFunctionDef = nullptr;
+ CurFunctionDeclToDeclareForBlock = nullptr;
+ }
+ break;
+ }
+ case Decl::ObjCMethod: {
+ ObjCMethodDecl *MD = cast<ObjCMethodDecl>(D);
+ if (CompoundStmt *Body = MD->getCompoundBody()) {
+ CurMethodDef = MD;
+ CurrentBody = Body;
+ Body =
+ cast_or_null<CompoundStmt>(RewriteFunctionBodyOrGlobalInitializer(Body));
+ MD->setBody(Body);
+ CurrentBody = nullptr;
+ if (PropParentMap) {
+ delete PropParentMap;
+ PropParentMap = nullptr;
+ }
+ InsertBlockLiteralsWithinMethod(MD);
+ CurMethodDef = nullptr;
+ }
+ break;
+ }
+ case Decl::ObjCImplementation: {
+ ObjCImplementationDecl *CI = cast<ObjCImplementationDecl>(D);
+ ClassImplementation.push_back(CI);
+ break;
+ }
+ case Decl::ObjCCategoryImpl: {
+ ObjCCategoryImplDecl *CI = cast<ObjCCategoryImplDecl>(D);
+ CategoryImplementation.push_back(CI);
+ break;
+ }
+ case Decl::Var: {
+ VarDecl *VD = cast<VarDecl>(D);
+ RewriteObjCQualifiedInterfaceTypes(VD);
+ if (isTopLevelBlockPointerType(VD->getType()))
+ RewriteBlockPointerDecl(VD);
+ else if (VD->getType()->isFunctionPointerType()) {
+ CheckFunctionPointerDecl(VD->getType(), VD);
+ if (VD->getInit()) {
+ if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
+ RewriteCastExpr(CE);
+ }
+ }
+ } else if (VD->getType()->isRecordType()) {
+ RecordDecl *RD = VD->getType()->getAs<RecordType>()->getDecl();
+ if (RD->isCompleteDefinition())
+ RewriteRecordBody(RD);
+ }
+ if (VD->getInit()) {
+ GlobalVarDecl = VD;
+ CurrentBody = VD->getInit();
+ RewriteFunctionBodyOrGlobalInitializer(VD->getInit());
+ CurrentBody = nullptr;
+ if (PropParentMap) {
+ delete PropParentMap;
+ PropParentMap = nullptr;
+ }
+ SynthesizeBlockLiterals(VD->getTypeSpecStartLoc(), VD->getName());
+ GlobalVarDecl = nullptr;
+
+ // This is needed for blocks.
+ if (CStyleCastExpr *CE = dyn_cast<CStyleCastExpr>(VD->getInit())) {
+ RewriteCastExpr(CE);
+ }
+ }
+ break;
+ }
+ case Decl::TypeAlias:
+ case Decl::Typedef: {
+ if (TypedefNameDecl *TD = dyn_cast<TypedefNameDecl>(D)) {
+ if (isTopLevelBlockPointerType(TD->getUnderlyingType()))
+ RewriteBlockPointerDecl(TD);
+ else if (TD->getUnderlyingType()->isFunctionPointerType())
+ CheckFunctionPointerDecl(TD->getUnderlyingType(), TD);
+ }
+ break;
+ }
+ case Decl::CXXRecord:
+ case Decl::Record: {
+ RecordDecl *RD = cast<RecordDecl>(D);
+ if (RD->isCompleteDefinition())
+ RewriteRecordBody(RD);
+ break;
+ }
+ default:
+ break;
+ }
+ // Nothing yet.
+}
+
+void RewriteObjC::HandleTranslationUnit(ASTContext &C) {
+ if (Diags.hasErrorOccurred())
+ return;
+
+ RewriteInclude();
+
+ // Here's a great place to add any extra declarations that may be needed.
+ // Write out meta data for each @protocol(<expr>).
+ for (ObjCProtocolDecl *ProtDecl : ProtocolExprDecls)
+ RewriteObjCProtocolMetaData(ProtDecl, "", "", Preamble);
+
+ InsertText(SM->getLocForStartOfFile(MainFileID), Preamble, false);
+ if (ClassImplementation.size() || CategoryImplementation.size())
+ RewriteImplementations();
+
+ // Get the buffer corresponding to MainFileID. If we haven't changed it, then
+ // we are done.
+ if (const RewriteBuffer *RewriteBuf =
+ Rewrite.getRewriteBufferFor(MainFileID)) {
+ //printf("Changed:\n");
+ *OutFile << std::string(RewriteBuf->begin(), RewriteBuf->end());
+ } else {
+ llvm::errs() << "No changes\n";
+ }
+
+ if (ClassImplementation.size() || CategoryImplementation.size() ||
+ ProtocolExprDecls.size()) {
+ // Rewrite Objective-c meta data*
+ std::string ResultStr;
+ RewriteMetaDataIntoBuffer(ResultStr);
+ // Emit metadata.
+ *OutFile << ResultStr;
+ }
+ OutFile->flush();
+}
+
+void RewriteObjCFragileABI::Initialize(ASTContext &context) {
+ InitializeCommon(context);
+
+ // declaring objc_selector outside the parameter list removes a silly
+ // scope related warning...
+ if (IsHeader)
+ Preamble = "#pragma once\n";
+ Preamble += "struct objc_selector; struct objc_class;\n";
+ Preamble += "struct __rw_objc_super { struct objc_object *object; ";
+ Preamble += "struct objc_object *superClass; ";
+ if (LangOpts.MicrosoftExt) {
+ // Add a constructor for creating temporary objects.
+ Preamble += "__rw_objc_super(struct objc_object *o, struct objc_object *s) "
+ ": ";
+ Preamble += "object(o), superClass(s) {} ";
+ }
+ Preamble += "};\n";
+ Preamble += "#ifndef _REWRITER_typedef_Protocol\n";
+ Preamble += "typedef struct objc_object Protocol;\n";
+ Preamble += "#define _REWRITER_typedef_Protocol\n";
+ Preamble += "#endif\n";
+ if (LangOpts.MicrosoftExt) {
+ Preamble += "#define __OBJC_RW_DLLIMPORT extern \"C\" __declspec(dllimport)\n";
+ Preamble += "#define __OBJC_RW_STATICIMPORT extern \"C\"\n";
+ } else
+ Preamble += "#define __OBJC_RW_DLLIMPORT extern\n";
+ Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSend";
+ Preamble += "(struct objc_object *, struct objc_selector *, ...);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_msgSendSuper";
+ Preamble += "(struct objc_super *, struct objc_selector *, ...);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT struct objc_object* objc_msgSend_stret";
+ Preamble += "(struct objc_object *, struct objc_selector *, ...);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT struct objc_object* objc_msgSendSuper_stret";
+ Preamble += "(struct objc_super *, struct objc_selector *, ...);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT double objc_msgSend_fpret";
+ Preamble += "(struct objc_object *, struct objc_selector *, ...);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_getClass";
+ Preamble += "(const char *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT struct objc_class *class_getSuperclass";
+ Preamble += "(struct objc_class *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_getMetaClass";
+ Preamble += "(const char *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_throw(struct objc_object *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_try_enter(void *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void objc_exception_try_exit(void *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT struct objc_object *objc_exception_extract(void *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT int objc_exception_match";
+ Preamble += "(struct objc_class *, struct objc_object *);\n";
+ // @synchronized hooks.
+ Preamble += "__OBJC_RW_DLLIMPORT int objc_sync_enter(struct objc_object *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT int objc_sync_exit(struct objc_object *);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT Protocol *objc_getProtocol(const char *);\n";
+ Preamble += "#ifndef __FASTENUMERATIONSTATE\n";
+ Preamble += "struct __objcFastEnumerationState {\n\t";
+ Preamble += "unsigned long state;\n\t";
+ Preamble += "void **itemsPtr;\n\t";
+ Preamble += "unsigned long *mutationsPtr;\n\t";
+ Preamble += "unsigned long extra[5];\n};\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void objc_enumerationMutation(struct objc_object *);\n";
+ Preamble += "#define __FASTENUMERATIONSTATE\n";
+ Preamble += "#endif\n";
+ Preamble += "#ifndef __NSCONSTANTSTRINGIMPL\n";
+ Preamble += "struct __NSConstantStringImpl {\n";
+ Preamble += " int *isa;\n";
+ Preamble += " int flags;\n";
+ Preamble += " char *str;\n";
+ Preamble += " long length;\n";
+ Preamble += "};\n";
+ Preamble += "#ifdef CF_EXPORT_CONSTANT_STRING\n";
+ Preamble += "extern \"C\" __declspec(dllexport) int __CFConstantStringClassReference[];\n";
+ Preamble += "#else\n";
+ Preamble += "__OBJC_RW_DLLIMPORT int __CFConstantStringClassReference[];\n";
+ Preamble += "#endif\n";
+ Preamble += "#define __NSCONSTANTSTRINGIMPL\n";
+ Preamble += "#endif\n";
+ // Blocks preamble.
+ Preamble += "#ifndef BLOCK_IMPL\n";
+ Preamble += "#define BLOCK_IMPL\n";
+ Preamble += "struct __block_impl {\n";
+ Preamble += " void *isa;\n";
+ Preamble += " int Flags;\n";
+ Preamble += " int Reserved;\n";
+ Preamble += " void *FuncPtr;\n";
+ Preamble += "};\n";
+ Preamble += "// Runtime copy/destroy helper functions (from Block_private.h)\n";
+ Preamble += "#ifdef __OBJC_EXPORT_BLOCKS\n";
+ Preamble += "extern \"C\" __declspec(dllexport) "
+ "void _Block_object_assign(void *, const void *, const int);\n";
+ Preamble += "extern \"C\" __declspec(dllexport) void _Block_object_dispose(const void *, const int);\n";
+ Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteGlobalBlock[32];\n";
+ Preamble += "extern \"C\" __declspec(dllexport) void *_NSConcreteStackBlock[32];\n";
+ Preamble += "#else\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_assign(void *, const void *, const int);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void _Block_object_dispose(const void *, const int);\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteGlobalBlock[32];\n";
+ Preamble += "__OBJC_RW_DLLIMPORT void *_NSConcreteStackBlock[32];\n";
+ Preamble += "#endif\n";
+ Preamble += "#endif\n";
+ if (LangOpts.MicrosoftExt) {
+ Preamble += "#undef __OBJC_RW_DLLIMPORT\n";
+ Preamble += "#undef __OBJC_RW_STATICIMPORT\n";
+ Preamble += "#ifndef KEEP_ATTRIBUTES\n"; // We use this for clang tests.
+ Preamble += "#define __attribute__(X)\n";
+ Preamble += "#endif\n";
+ Preamble += "#define __weak\n";
+ }
+ else {
+ Preamble += "#define __block\n";
+ Preamble += "#define __weak\n";
+ }
+ // NOTE! Windows uses LLP64 for 64bit mode. So, cast pointer to long long
+ // as this avoids warning in any 64bit/32bit compilation model.
+ Preamble += "\n#define __OFFSETOFIVAR__(TYPE, MEMBER) ((long long) &((TYPE *)0)->MEMBER)\n";
+}
+
+/// RewriteIvarOffsetComputation - This rutine synthesizes computation of
+/// ivar offset.
+void RewriteObjCFragileABI::RewriteIvarOffsetComputation(ObjCIvarDecl *ivar,
+ std::string &Result) {
+ if (ivar->isBitField()) {
+ // FIXME: The hack below doesn't work for bitfields. For now, we simply
+ // place all bitfields at offset 0.
+ Result += "0";
+ } else {
+ Result += "__OFFSETOFIVAR__(struct ";
+ Result += ivar->getContainingInterface()->getNameAsString();
+ if (LangOpts.MicrosoftExt)
+ Result += "_IMPL";
+ Result += ", ";
+ Result += ivar->getNameAsString();
+ Result += ")";
+ }
+}
+
+/// RewriteObjCProtocolMetaData - Rewrite protocols meta-data.
+void RewriteObjCFragileABI::RewriteObjCProtocolMetaData(
+ ObjCProtocolDecl *PDecl, StringRef prefix,
+ StringRef ClassName, std::string &Result) {
+ static bool objc_protocol_methods = false;
+
+ // Output struct protocol_methods holder of method selector and type.
+ if (!objc_protocol_methods && PDecl->hasDefinition()) {
+ /* struct protocol_methods {
+ SEL _cmd;
+ char *method_types;
+ }
+ */
+ Result += "\nstruct _protocol_methods {\n";
+ Result += "\tstruct objc_selector *_cmd;\n";
+ Result += "\tchar *method_types;\n";
+ Result += "};\n";
+
+ objc_protocol_methods = true;
+ }
+ // Do not synthesize the protocol more than once.
+ if (ObjCSynthesizedProtocols.count(PDecl->getCanonicalDecl()))
+ return;
+
+ if (ObjCProtocolDecl *Def = PDecl->getDefinition())
+ PDecl = Def;
+
+ if (PDecl->instmeth_begin() != PDecl->instmeth_end()) {
+ unsigned NumMethods = std::distance(PDecl->instmeth_begin(),
+ PDecl->instmeth_end());
+ /* struct _objc_protocol_method_list {
+ int protocol_method_count;
+ struct protocol_methods protocols[];
+ }
+ */
+ Result += "\nstatic struct {\n";
+ Result += "\tint protocol_method_count;\n";
+ Result += "\tstruct _protocol_methods protocol_methods[";
+ Result += utostr(NumMethods);
+ Result += "];\n} _OBJC_PROTOCOL_INSTANCE_METHODS_";
+ Result += PDecl->getNameAsString();
+ Result += " __attribute__ ((used, section (\"__OBJC, __cat_inst_meth\")))= "
+ "{\n\t" + utostr(NumMethods) + "\n";
+
+ // Output instance methods declared in this protocol.
+ for (ObjCProtocolDecl::instmeth_iterator
+ I = PDecl->instmeth_begin(), E = PDecl->instmeth_end();
+ I != E; ++I) {
+ if (I == PDecl->instmeth_begin())
+ Result += "\t ,{{(struct objc_selector *)\"";
+ else
+ Result += "\t ,{(struct objc_selector *)\"";
+ Result += (*I)->getSelector().getAsString();
+ std::string MethodTypeString;
+ Context->getObjCEncodingForMethodDecl((*I), MethodTypeString);
+ Result += "\", \"";
+ Result += MethodTypeString;
+ Result += "\"}\n";
+ }
+ Result += "\t }\n};\n";
+ }
+
+ // Output class methods declared in this protocol.
+ unsigned NumMethods = std::distance(PDecl->classmeth_begin(),
+ PDecl->classmeth_end());
+ if (NumMethods > 0) {
+ /* struct _objc_protocol_method_list {
+ int protocol_method_count;
+ struct protocol_methods protocols[];
+ }
+ */
+ Result += "\nstatic struct {\n";
+ Result += "\tint protocol_method_count;\n";
+ Result += "\tstruct _protocol_methods protocol_methods[";
+ Result += utostr(NumMethods);
+ Result += "];\n} _OBJC_PROTOCOL_CLASS_METHODS_";
+ Result += PDecl->getNameAsString();
+ Result += " __attribute__ ((used, section (\"__OBJC, __cat_cls_meth\")))= "
+ "{\n\t";
+ Result += utostr(NumMethods);
+ Result += "\n";
+
+ // Output instance methods declared in this protocol.
+ for (ObjCProtocolDecl::classmeth_iterator
+ I = PDecl->classmeth_begin(), E = PDecl->classmeth_end();
+ I != E; ++I) {
+ if (I == PDecl->classmeth_begin())
+ Result += "\t ,{{(struct objc_selector *)\"";
+ else
+ Result += "\t ,{(struct objc_selector *)\"";
+ Result += (*I)->getSelector().getAsString();
+ std::string MethodTypeString;
+ Context->getObjCEncodingForMethodDecl((*I), MethodTypeString);
+ Result += "\", \"";
+ Result += MethodTypeString;
+ Result += "\"}\n";
+ }
+ Result += "\t }\n};\n";
+ }
+
+ // Output:
+ /* struct _objc_protocol {
+ // Objective-C 1.0 extensions
+ struct _objc_protocol_extension *isa;
+ char *protocol_name;
+ struct _objc_protocol **protocol_list;
+ struct _objc_protocol_method_list *instance_methods;
+ struct _objc_protocol_method_list *class_methods;
+ };
+ */
+ static bool objc_protocol = false;
+ if (!objc_protocol) {
+ Result += "\nstruct _objc_protocol {\n";
+ Result += "\tstruct _objc_protocol_extension *isa;\n";
+ Result += "\tchar *protocol_name;\n";
+ Result += "\tstruct _objc_protocol **protocol_list;\n";
+ Result += "\tstruct _objc_protocol_method_list *instance_methods;\n";
+ Result += "\tstruct _objc_protocol_method_list *class_methods;\n";
+ Result += "};\n";
+
+ objc_protocol = true;
+ }
+
+ Result += "\nstatic struct _objc_protocol _OBJC_PROTOCOL_";
+ Result += PDecl->getNameAsString();
+ Result += " __attribute__ ((used, section (\"__OBJC, __protocol\")))= "
+ "{\n\t0, \"";
+ Result += PDecl->getNameAsString();
+ Result += "\", 0, ";
+ if (PDecl->instmeth_begin() != PDecl->instmeth_end()) {
+ Result += "(struct _objc_protocol_method_list *)&_OBJC_PROTOCOL_INSTANCE_METHODS_";
+ Result += PDecl->getNameAsString();
+ Result += ", ";
+ }
+ else
+ Result += "0, ";
+ if (PDecl->classmeth_begin() != PDecl->classmeth_end()) {
+ Result += "(struct _objc_protocol_method_list *)&_OBJC_PROTOCOL_CLASS_METHODS_";
+ Result += PDecl->getNameAsString();
+ Result += "\n";
+ }
+ else
+ Result += "0\n";
+ Result += "};\n";
+
+ // Mark this protocol as having been generated.
+ if (!ObjCSynthesizedProtocols.insert(PDecl->getCanonicalDecl()).second)
+ llvm_unreachable("protocol already synthesized");
+
+}
+
+void RewriteObjCFragileABI::RewriteObjCProtocolListMetaData(
+ const ObjCList<ObjCProtocolDecl> &Protocols,
+ StringRef prefix, StringRef ClassName,
+ std::string &Result) {
+ if (Protocols.empty()) return;
+
+ for (unsigned i = 0; i != Protocols.size(); i++)
+ RewriteObjCProtocolMetaData(Protocols[i], prefix, ClassName, Result);
+
+ // Output the top lovel protocol meta-data for the class.
+ /* struct _objc_protocol_list {
+ struct _objc_protocol_list *next;
+ int protocol_count;
+ struct _objc_protocol *class_protocols[];
+ }
+ */
+ Result += "\nstatic struct {\n";
+ Result += "\tstruct _objc_protocol_list *next;\n";
+ Result += "\tint protocol_count;\n";
+ Result += "\tstruct _objc_protocol *class_protocols[";
+ Result += utostr(Protocols.size());
+ Result += "];\n} _OBJC_";
+ Result += prefix;
+ Result += "_PROTOCOLS_";
+ Result += ClassName;
+ Result += " __attribute__ ((used, section (\"__OBJC, __cat_cls_meth\")))= "
+ "{\n\t0, ";
+ Result += utostr(Protocols.size());
+ Result += "\n";
+
+ Result += "\t,{&_OBJC_PROTOCOL_";
+ Result += Protocols[0]->getNameAsString();
+ Result += " \n";
+
+ for (unsigned i = 1; i != Protocols.size(); i++) {
+ Result += "\t ,&_OBJC_PROTOCOL_";
+ Result += Protocols[i]->getNameAsString();
+ Result += "\n";
+ }
+ Result += "\t }\n};\n";
+}
+
+void RewriteObjCFragileABI::RewriteObjCClassMetaData(ObjCImplementationDecl *IDecl,
+ std::string &Result) {
+ ObjCInterfaceDecl *CDecl = IDecl->getClassInterface();
+
+ // Explicitly declared @interface's are already synthesized.
+ if (CDecl->isImplicitInterfaceDecl()) {
+ // FIXME: Implementation of a class with no @interface (legacy) does not
+ // produce correct synthesis as yet.
+ RewriteObjCInternalStruct(CDecl, Result);
+ }
+
+ // Build _objc_ivar_list metadata for classes ivars if needed
+ unsigned NumIvars = !IDecl->ivar_empty()
+ ? IDecl->ivar_size()
+ : (CDecl ? CDecl->ivar_size() : 0);
+ if (NumIvars > 0) {
+ static bool objc_ivar = false;
+ if (!objc_ivar) {
+ /* struct _objc_ivar {
+ char *ivar_name;
+ char *ivar_type;
+ int ivar_offset;
+ };
+ */
+ Result += "\nstruct _objc_ivar {\n";
+ Result += "\tchar *ivar_name;\n";
+ Result += "\tchar *ivar_type;\n";
+ Result += "\tint ivar_offset;\n";
+ Result += "};\n";
+
+ objc_ivar = true;
+ }
+
+ /* struct {
+ int ivar_count;
+ struct _objc_ivar ivar_list[nIvars];
+ };
+ */
+ Result += "\nstatic struct {\n";
+ Result += "\tint ivar_count;\n";
+ Result += "\tstruct _objc_ivar ivar_list[";
+ Result += utostr(NumIvars);
+ Result += "];\n} _OBJC_INSTANCE_VARIABLES_";
+ Result += IDecl->getNameAsString();
+ Result += " __attribute__ ((used, section (\"__OBJC, __instance_vars\")))= "
+ "{\n\t";
+ Result += utostr(NumIvars);
+ Result += "\n";
+
+ ObjCInterfaceDecl::ivar_iterator IVI, IVE;
+ SmallVector<ObjCIvarDecl *, 8> IVars;
+ if (!IDecl->ivar_empty()) {
+ for (auto *IV : IDecl->ivars())
+ IVars.push_back(IV);
+ IVI = IDecl->ivar_begin();
+ IVE = IDecl->ivar_end();
+ } else {
+ IVI = CDecl->ivar_begin();
+ IVE = CDecl->ivar_end();
+ }
+ Result += "\t,{{\"";
+ Result += IVI->getNameAsString();
+ Result += "\", \"";
+ std::string TmpString, StrEncoding;
+ Context->getObjCEncodingForType(IVI->getType(), TmpString, *IVI);
+ QuoteDoublequotes(TmpString, StrEncoding);
+ Result += StrEncoding;
+ Result += "\", ";
+ RewriteIvarOffsetComputation(*IVI, Result);
+ Result += "}\n";
+ for (++IVI; IVI != IVE; ++IVI) {
+ Result += "\t ,{\"";
+ Result += IVI->getNameAsString();
+ Result += "\", \"";
+ std::string TmpString, StrEncoding;
+ Context->getObjCEncodingForType(IVI->getType(), TmpString, *IVI);
+ QuoteDoublequotes(TmpString, StrEncoding);
+ Result += StrEncoding;
+ Result += "\", ";
+ RewriteIvarOffsetComputation(*IVI, Result);
+ Result += "}\n";
+ }
+
+ Result += "\t }\n};\n";
+ }
+
+ // Build _objc_method_list for class's instance methods if needed
+ SmallVector<ObjCMethodDecl *, 32> InstanceMethods(IDecl->instance_methods());
+
+ // If any of our property implementations have associated getters or
+ // setters, produce metadata for them as well.
+ for (const auto *Prop : IDecl->property_impls()) {
+ if (Prop->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
+ continue;
+ if (!Prop->getPropertyIvarDecl())
+ continue;
+ ObjCPropertyDecl *PD = Prop->getPropertyDecl();
+ if (!PD)
+ continue;
+ if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl())
+ if (!Getter->isDefined())
+ InstanceMethods.push_back(Getter);
+ if (PD->isReadOnly())
+ continue;
+ if (ObjCMethodDecl *Setter = PD->getSetterMethodDecl())
+ if (!Setter->isDefined())
+ InstanceMethods.push_back(Setter);
+ }
+ RewriteObjCMethodsMetaData(InstanceMethods.begin(), InstanceMethods.end(),
+ true, "", IDecl->getName(), Result);
+
+ // Build _objc_method_list for class's class methods if needed
+ RewriteObjCMethodsMetaData(IDecl->classmeth_begin(), IDecl->classmeth_end(),
+ false, "", IDecl->getName(), Result);
+
+ // Protocols referenced in class declaration?
+ RewriteObjCProtocolListMetaData(CDecl->getReferencedProtocols(),
+ "CLASS", CDecl->getName(), Result);
+
+ // Declaration of class/meta-class metadata
+ /* struct _objc_class {
+ struct _objc_class *isa; // or const char *root_class_name when metadata
+ const char *super_class_name;
+ char *name;
+ long version;
+ long info;
+ long instance_size;
+ struct _objc_ivar_list *ivars;
+ struct _objc_method_list *methods;
+ struct objc_cache *cache;
+ struct objc_protocol_list *protocols;
+ const char *ivar_layout;
+ struct _objc_class_ext *ext;
+ };
+ */
+ static bool objc_class = false;
+ if (!objc_class) {
+ Result += "\nstruct _objc_class {\n";
+ Result += "\tstruct _objc_class *isa;\n";
+ Result += "\tconst char *super_class_name;\n";
+ Result += "\tchar *name;\n";
+ Result += "\tlong version;\n";
+ Result += "\tlong info;\n";
+ Result += "\tlong instance_size;\n";
+ Result += "\tstruct _objc_ivar_list *ivars;\n";
+ Result += "\tstruct _objc_method_list *methods;\n";
+ Result += "\tstruct objc_cache *cache;\n";
+ Result += "\tstruct _objc_protocol_list *protocols;\n";
+ Result += "\tconst char *ivar_layout;\n";
+ Result += "\tstruct _objc_class_ext *ext;\n";
+ Result += "};\n";
+ objc_class = true;
+ }
+
+ // Meta-class metadata generation.
+ ObjCInterfaceDecl *RootClass = nullptr;
+ ObjCInterfaceDecl *SuperClass = CDecl->getSuperClass();
+ while (SuperClass) {
+ RootClass = SuperClass;
+ SuperClass = SuperClass->getSuperClass();
+ }
+ SuperClass = CDecl->getSuperClass();
+
+ Result += "\nstatic struct _objc_class _OBJC_METACLASS_";
+ Result += CDecl->getNameAsString();
+ Result += " __attribute__ ((used, section (\"__OBJC, __meta_class\")))= "
+ "{\n\t(struct _objc_class *)\"";
+ Result += (RootClass ? RootClass->getNameAsString() : CDecl->getNameAsString());
+ Result += "\"";
+
+ if (SuperClass) {
+ Result += ", \"";
+ Result += SuperClass->getNameAsString();
+ Result += "\", \"";
+ Result += CDecl->getNameAsString();
+ Result += "\"";
+ }
+ else {
+ Result += ", 0, \"";
+ Result += CDecl->getNameAsString();
+ Result += "\"";
+ }
+ // Set 'ivars' field for root class to 0. ObjC1 runtime does not use it.
+ // 'info' field is initialized to CLS_META(2) for metaclass
+ Result += ", 0,2, sizeof(struct _objc_class), 0";
+ if (IDecl->classmeth_begin() != IDecl->classmeth_end()) {
+ Result += "\n\t, (struct _objc_method_list *)&_OBJC_CLASS_METHODS_";
+ Result += IDecl->getNameAsString();
+ Result += "\n";
+ }
+ else
+ Result += ", 0\n";
+ if (CDecl->protocol_begin() != CDecl->protocol_end()) {
+ Result += "\t,0, (struct _objc_protocol_list *)&_OBJC_CLASS_PROTOCOLS_";
+ Result += CDecl->getNameAsString();
+ Result += ",0,0\n";
+ }
+ else
+ Result += "\t,0,0,0,0\n";
+ Result += "};\n";
+
+ // class metadata generation.
+ Result += "\nstatic struct _objc_class _OBJC_CLASS_";
+ Result += CDecl->getNameAsString();
+ Result += " __attribute__ ((used, section (\"__OBJC, __class\")))= "
+ "{\n\t&_OBJC_METACLASS_";
+ Result += CDecl->getNameAsString();
+ if (SuperClass) {
+ Result += ", \"";
+ Result += SuperClass->getNameAsString();
+ Result += "\", \"";
+ Result += CDecl->getNameAsString();
+ Result += "\"";
+ }
+ else {
+ Result += ", 0, \"";
+ Result += CDecl->getNameAsString();
+ Result += "\"";
+ }
+ // 'info' field is initialized to CLS_CLASS(1) for class
+ Result += ", 0,1";
+ if (!ObjCSynthesizedStructs.count(CDecl))
+ Result += ",0";
+ else {
+ // class has size. Must synthesize its size.
+ Result += ",sizeof(struct ";
+ Result += CDecl->getNameAsString();
+ if (LangOpts.MicrosoftExt)
+ Result += "_IMPL";
+ Result += ")";
+ }
+ if (NumIvars > 0) {
+ Result += ", (struct _objc_ivar_list *)&_OBJC_INSTANCE_VARIABLES_";
+ Result += CDecl->getNameAsString();
+ Result += "\n\t";
+ }
+ else
+ Result += ",0";
+ if (IDecl->instmeth_begin() != IDecl->instmeth_end()) {
+ Result += ", (struct _objc_method_list *)&_OBJC_INSTANCE_METHODS_";
+ Result += CDecl->getNameAsString();
+ Result += ", 0\n\t";
+ }
+ else
+ Result += ",0,0";
+ if (CDecl->protocol_begin() != CDecl->protocol_end()) {
+ Result += ", (struct _objc_protocol_list*)&_OBJC_CLASS_PROTOCOLS_";
+ Result += CDecl->getNameAsString();
+ Result += ", 0,0\n";
+ }
+ else
+ Result += ",0,0,0\n";
+ Result += "};\n";
+}
+
+void RewriteObjCFragileABI::RewriteMetaDataIntoBuffer(std::string &Result) {
+ int ClsDefCount = ClassImplementation.size();
+ int CatDefCount = CategoryImplementation.size();
+
+ // For each implemented class, write out all its meta data.
+ for (int i = 0; i < ClsDefCount; i++)
+ RewriteObjCClassMetaData(ClassImplementation[i], Result);
+
+ // For each implemented category, write out all its meta data.
+ for (int i = 0; i < CatDefCount; i++)
+ RewriteObjCCategoryImplDecl(CategoryImplementation[i], Result);
+
+ // Write objc_symtab metadata
+ /*
+ struct _objc_symtab
+ {
+ long sel_ref_cnt;
+ SEL *refs;
+ short cls_def_cnt;
+ short cat_def_cnt;
+ void *defs[cls_def_cnt + cat_def_cnt];
+ };
+ */
+
+ Result += "\nstruct _objc_symtab {\n";
+ Result += "\tlong sel_ref_cnt;\n";
+ Result += "\tSEL *refs;\n";
+ Result += "\tshort cls_def_cnt;\n";
+ Result += "\tshort cat_def_cnt;\n";
+ Result += "\tvoid *defs[" + utostr(ClsDefCount + CatDefCount)+ "];\n";
+ Result += "};\n\n";
+
+ Result += "static struct _objc_symtab "
+ "_OBJC_SYMBOLS __attribute__((used, section (\"__OBJC, __symbols\")))= {\n";
+ Result += "\t0, 0, " + utostr(ClsDefCount)
+ + ", " + utostr(CatDefCount) + "\n";
+ for (int i = 0; i < ClsDefCount; i++) {
+ Result += "\t,&_OBJC_CLASS_";
+ Result += ClassImplementation[i]->getNameAsString();
+ Result += "\n";
+ }
+
+ for (int i = 0; i < CatDefCount; i++) {
+ Result += "\t,&_OBJC_CATEGORY_";
+ Result += CategoryImplementation[i]->getClassInterface()->getNameAsString();
+ Result += "_";
+ Result += CategoryImplementation[i]->getNameAsString();
+ Result += "\n";
+ }
+
+ Result += "};\n\n";
+
+ // Write objc_module metadata
+
+ /*
+ struct _objc_module {
+ long version;
+ long size;
+ const char *name;
+ struct _objc_symtab *symtab;
+ }
+ */
+
+ Result += "\nstruct _objc_module {\n";
+ Result += "\tlong version;\n";
+ Result += "\tlong size;\n";
+ Result += "\tconst char *name;\n";
+ Result += "\tstruct _objc_symtab *symtab;\n";
+ Result += "};\n\n";
+ Result += "static struct _objc_module "
+ "_OBJC_MODULES __attribute__ ((used, section (\"__OBJC, __module_info\")))= {\n";
+ Result += "\t" + utostr(OBJC_ABI_VERSION) +
+ ", sizeof(struct _objc_module), \"\", &_OBJC_SYMBOLS\n";
+ Result += "};\n\n";
+
+ if (LangOpts.MicrosoftExt) {
+ if (ProtocolExprDecls.size()) {
+ Result += "#pragma section(\".objc_protocol$B\",long,read,write)\n";
+ Result += "#pragma data_seg(push, \".objc_protocol$B\")\n";
+ for (ObjCProtocolDecl *ProtDecl : ProtocolExprDecls) {
+ Result += "static struct _objc_protocol *_POINTER_OBJC_PROTOCOL_";
+ Result += ProtDecl->getNameAsString();
+ Result += " = &_OBJC_PROTOCOL_";
+ Result += ProtDecl->getNameAsString();
+ Result += ";\n";
+ }
+ Result += "#pragma data_seg(pop)\n\n";
+ }
+ Result += "#pragma section(\".objc_module_info$B\",long,read,write)\n";
+ Result += "#pragma data_seg(push, \".objc_module_info$B\")\n";
+ Result += "static struct _objc_module *_POINTER_OBJC_MODULES = ";
+ Result += "&_OBJC_MODULES;\n";
+ Result += "#pragma data_seg(pop)\n\n";
+ }
+}
+
+/// RewriteObjCCategoryImplDecl - Rewrite metadata for each category
+/// implementation.
+void RewriteObjCFragileABI::RewriteObjCCategoryImplDecl(ObjCCategoryImplDecl *IDecl,
+ std::string &Result) {
+ ObjCInterfaceDecl *ClassDecl = IDecl->getClassInterface();
+ // Find category declaration for this implementation.
+ ObjCCategoryDecl *CDecl
+ = ClassDecl->FindCategoryDeclaration(IDecl->getIdentifier());
+
+ std::string FullCategoryName = ClassDecl->getNameAsString();
+ FullCategoryName += '_';
+ FullCategoryName += IDecl->getNameAsString();
+
+ // Build _objc_method_list for class's instance methods if needed
+ SmallVector<ObjCMethodDecl *, 32> InstanceMethods(IDecl->instance_methods());
+
+ // If any of our property implementations have associated getters or
+ // setters, produce metadata for them as well.
+ for (const auto *Prop : IDecl->property_impls()) {
+ if (Prop->getPropertyImplementation() == ObjCPropertyImplDecl::Dynamic)
+ continue;
+ if (!Prop->getPropertyIvarDecl())
+ continue;
+ ObjCPropertyDecl *PD = Prop->getPropertyDecl();
+ if (!PD)
+ continue;
+ if (ObjCMethodDecl *Getter = PD->getGetterMethodDecl())
+ InstanceMethods.push_back(Getter);
+ if (PD->isReadOnly())
+ continue;
+ if (ObjCMethodDecl *Setter = PD->getSetterMethodDecl())
+ InstanceMethods.push_back(Setter);
+ }
+ RewriteObjCMethodsMetaData(InstanceMethods.begin(), InstanceMethods.end(),
+ true, "CATEGORY_", FullCategoryName.c_str(),
+ Result);
+
+ // Build _objc_method_list for class's class methods if needed
+ RewriteObjCMethodsMetaData(IDecl->classmeth_begin(), IDecl->classmeth_end(),
+ false, "CATEGORY_", FullCategoryName.c_str(),
+ Result);
+
+ // Protocols referenced in class declaration?
+ // Null CDecl is case of a category implementation with no category interface
+ if (CDecl)
+ RewriteObjCProtocolListMetaData(CDecl->getReferencedProtocols(), "CATEGORY",
+ FullCategoryName, Result);
+ /* struct _objc_category {
+ char *category_name;
+ char *class_name;
+ struct _objc_method_list *instance_methods;
+ struct _objc_method_list *class_methods;
+ struct _objc_protocol_list *protocols;
+ // Objective-C 1.0 extensions
+ uint32_t size; // sizeof (struct _objc_category)
+ struct _objc_property_list *instance_properties; // category's own
+ // @property decl.
+ };
+ */
+
+ static bool objc_category = false;
+ if (!objc_category) {
+ Result += "\nstruct _objc_category {\n";
+ Result += "\tchar *category_name;\n";
+ Result += "\tchar *class_name;\n";
+ Result += "\tstruct _objc_method_list *instance_methods;\n";
+ Result += "\tstruct _objc_method_list *class_methods;\n";
+ Result += "\tstruct _objc_protocol_list *protocols;\n";
+ Result += "\tunsigned int size;\n";
+ Result += "\tstruct _objc_property_list *instance_properties;\n";
+ Result += "};\n";
+ objc_category = true;
+ }
+ Result += "\nstatic struct _objc_category _OBJC_CATEGORY_";
+ Result += FullCategoryName;
+ Result += " __attribute__ ((used, section (\"__OBJC, __category\")))= {\n\t\"";
+ Result += IDecl->getNameAsString();
+ Result += "\"\n\t, \"";
+ Result += ClassDecl->getNameAsString();
+ Result += "\"\n";
+
+ if (IDecl->instmeth_begin() != IDecl->instmeth_end()) {
+ Result += "\t, (struct _objc_method_list *)"
+ "&_OBJC_CATEGORY_INSTANCE_METHODS_";
+ Result += FullCategoryName;
+ Result += "\n";
+ }
+ else
+ Result += "\t, 0\n";
+ if (IDecl->classmeth_begin() != IDecl->classmeth_end()) {
+ Result += "\t, (struct _objc_method_list *)"
+ "&_OBJC_CATEGORY_CLASS_METHODS_";
+ Result += FullCategoryName;
+ Result += "\n";
+ }
+ else
+ Result += "\t, 0\n";
+
+ if (CDecl && CDecl->protocol_begin() != CDecl->protocol_end()) {
+ Result += "\t, (struct _objc_protocol_list *)&_OBJC_CATEGORY_PROTOCOLS_";
+ Result += FullCategoryName;
+ Result += "\n";
+ }
+ else
+ Result += "\t, 0\n";
+ Result += "\t, sizeof(struct _objc_category), 0\n};\n";
+}
+
+// RewriteObjCMethodsMetaData - Rewrite methods metadata for instance or
+/// class methods.
+template<typename MethodIterator>
+void RewriteObjCFragileABI::RewriteObjCMethodsMetaData(MethodIterator MethodBegin,
+ MethodIterator MethodEnd,
+ bool IsInstanceMethod,
+ StringRef prefix,
+ StringRef ClassName,
+ std::string &Result) {
+ if (MethodBegin == MethodEnd) return;
+
+ if (!objc_impl_method) {
+ /* struct _objc_method {
+ SEL _cmd;
+ char *method_types;
+ void *_imp;
+ }
+ */
+ Result += "\nstruct _objc_method {\n";
+ Result += "\tSEL _cmd;\n";
+ Result += "\tchar *method_types;\n";
+ Result += "\tvoid *_imp;\n";
+ Result += "};\n";
+
+ objc_impl_method = true;
+ }
+
+ // Build _objc_method_list for class's methods if needed
+
+ /* struct {
+ struct _objc_method_list *next_method;
+ int method_count;
+ struct _objc_method method_list[];
+ }
+ */
+ unsigned NumMethods = std::distance(MethodBegin, MethodEnd);
+ Result += "\nstatic struct {\n";
+ Result += "\tstruct _objc_method_list *next_method;\n";
+ Result += "\tint method_count;\n";
+ Result += "\tstruct _objc_method method_list[";
+ Result += utostr(NumMethods);
+ Result += "];\n} _OBJC_";
+ Result += prefix;
+ Result += IsInstanceMethod ? "INSTANCE" : "CLASS";
+ Result += "_METHODS_";
+ Result += ClassName;
+ Result += " __attribute__ ((used, section (\"__OBJC, __";
+ Result += IsInstanceMethod ? "inst" : "cls";
+ Result += "_meth\")))= ";
+ Result += "{\n\t0, " + utostr(NumMethods) + "\n";
+
+ Result += "\t,{{(SEL)\"";
+ Result += (*MethodBegin)->getSelector().getAsString().c_str();
+ std::string MethodTypeString;
+ Context->getObjCEncodingForMethodDecl(*MethodBegin, MethodTypeString);
+ Result += "\", \"";
+ Result += MethodTypeString;
+ Result += "\", (void *)";
+ Result += MethodInternalNames[*MethodBegin];
+ Result += "}\n";
+ for (++MethodBegin; MethodBegin != MethodEnd; ++MethodBegin) {
+ Result += "\t ,{(SEL)\"";
+ Result += (*MethodBegin)->getSelector().getAsString().c_str();
+ std::string MethodTypeString;
+ Context->getObjCEncodingForMethodDecl(*MethodBegin, MethodTypeString);
+ Result += "\", \"";
+ Result += MethodTypeString;
+ Result += "\", (void *)";
+ Result += MethodInternalNames[*MethodBegin];
+ Result += "}\n";
+ }
+ Result += "\t }\n};\n";
+}
+
+Stmt *RewriteObjCFragileABI::RewriteObjCIvarRefExpr(ObjCIvarRefExpr *IV) {
+ SourceRange OldRange = IV->getSourceRange();
+ Expr *BaseExpr = IV->getBase();
+
+ // Rewrite the base, but without actually doing replaces.
+ {
+ DisableReplaceStmtScope S(*this);
+ BaseExpr = cast<Expr>(RewriteFunctionBodyOrGlobalInitializer(BaseExpr));
+ IV->setBase(BaseExpr);
+ }
+
+ ObjCIvarDecl *D = IV->getDecl();
+
+ Expr *Replacement = IV;
+ if (CurMethodDef) {
+ if (BaseExpr->getType()->isObjCObjectPointerType()) {
+ const ObjCInterfaceType *iFaceDecl =
+ dyn_cast<ObjCInterfaceType>(BaseExpr->getType()->getPointeeType());
+ assert(iFaceDecl && "RewriteObjCIvarRefExpr - iFaceDecl is null");
+ // lookup which class implements the instance variable.
+ ObjCInterfaceDecl *clsDeclared = nullptr;
+ iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(),
+ clsDeclared);
+ assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class");
+
+ // Synthesize an explicit cast to gain access to the ivar.
+ std::string RecName = clsDeclared->getIdentifier()->getName();
+ RecName += "_IMPL";
+ IdentifierInfo *II = &Context->Idents.get(RecName);
+ RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ II);
+ assert(RD && "RewriteObjCIvarRefExpr(): Can't find RecordDecl");
+ QualType castT = Context->getPointerType(Context->getTagDeclType(RD));
+ CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, castT,
+ CK_BitCast,
+ IV->getBase());
+ // Don't forget the parens to enforce the proper binding.
+ ParenExpr *PE = new (Context) ParenExpr(OldRange.getBegin(),
+ OldRange.getEnd(),
+ castExpr);
+ if (IV->isFreeIvar() &&
+ declaresSameEntity(CurMethodDef->getClassInterface(), iFaceDecl->getDecl())) {
+ MemberExpr *ME = new (Context) MemberExpr(PE, true, D,
+ IV->getLocation(),
+ D->getType(),
+ VK_LValue, OK_Ordinary);
+ Replacement = ME;
+ } else {
+ IV->setBase(PE);
+ }
+ }
+ } else { // we are outside a method.
+ assert(!IV->isFreeIvar() && "Cannot have a free standing ivar outside a method");
+
+ // Explicit ivar refs need to have a cast inserted.
+ // FIXME: consider sharing some of this code with the code above.
+ if (BaseExpr->getType()->isObjCObjectPointerType()) {
+ const ObjCInterfaceType *iFaceDecl =
+ dyn_cast<ObjCInterfaceType>(BaseExpr->getType()->getPointeeType());
+ // lookup which class implements the instance variable.
+ ObjCInterfaceDecl *clsDeclared = nullptr;
+ iFaceDecl->getDecl()->lookupInstanceVariable(D->getIdentifier(),
+ clsDeclared);
+ assert(clsDeclared && "RewriteObjCIvarRefExpr(): Can't find class");
+
+ // Synthesize an explicit cast to gain access to the ivar.
+ std::string RecName = clsDeclared->getIdentifier()->getName();
+ RecName += "_IMPL";
+ IdentifierInfo *II = &Context->Idents.get(RecName);
+ RecordDecl *RD = RecordDecl::Create(*Context, TTK_Struct, TUDecl,
+ SourceLocation(), SourceLocation(),
+ II);
+ assert(RD && "RewriteObjCIvarRefExpr(): Can't find RecordDecl");
+ QualType castT = Context->getPointerType(Context->getTagDeclType(RD));
+ CastExpr *castExpr = NoTypeInfoCStyleCastExpr(Context, castT,
+ CK_BitCast,
+ IV->getBase());
+ // Don't forget the parens to enforce the proper binding.
+ ParenExpr *PE = new (Context) ParenExpr(IV->getBase()->getLocStart(),
+ IV->getBase()->getLocEnd(), castExpr);
+ // Cannot delete IV->getBase(), since PE points to it.
+ // Replace the old base with the cast. This is important when doing
+ // embedded rewrites. For example, [newInv->_container addObject:0].
+ IV->setBase(PE);
+ }
+ }
+
+ ReplaceStmtWithRange(IV, Replacement, OldRange);
+ return Replacement;
+}
+
+#endif
diff --git a/lib/Frontend/Rewrite/RewriteTest.cpp b/lib/Frontend/Rewrite/RewriteTest.cpp
new file mode 100644
index 0000000..722c5e8
--- /dev/null
+++ b/lib/Frontend/Rewrite/RewriteTest.cpp
@@ -0,0 +1,39 @@
+//===--- RewriteTest.cpp - Rewriter playground ----------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a testbed.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Rewrite/Frontend/Rewriters.h"
+#include "clang/Lex/Preprocessor.h"
+#include "clang/Rewrite/Core/TokenRewriter.h"
+#include "llvm/Support/raw_ostream.h"
+
+void clang::DoRewriteTest(Preprocessor &PP, raw_ostream* OS) {
+ SourceManager &SM = PP.getSourceManager();
+ const LangOptions &LangOpts = PP.getLangOpts();
+
+ TokenRewriter Rewriter(SM.getMainFileID(), SM, LangOpts);
+
+ // Throw <i> </i> tags around comments.
+ for (TokenRewriter::token_iterator I = Rewriter.token_begin(),
+ E = Rewriter.token_end(); I != E; ++I) {
+ if (I->isNot(tok::comment)) continue;
+
+ Rewriter.AddTokenBefore(I, "<i>");
+ Rewriter.AddTokenAfter(I, "</i>");
+ }
+
+
+ // Print out the output.
+ for (TokenRewriter::token_iterator I = Rewriter.token_begin(),
+ E = Rewriter.token_end(); I != E; ++I)
+ *OS << PP.getSpelling(*I);
+}
diff --git a/lib/Frontend/SerializedDiagnosticPrinter.cpp b/lib/Frontend/SerializedDiagnosticPrinter.cpp
index db89f25..2ab8fbf 100644
--- a/lib/Frontend/SerializedDiagnosticPrinter.cpp
+++ b/lib/Frontend/SerializedDiagnosticPrinter.cpp
@@ -8,12 +8,16 @@
//===----------------------------------------------------------------------===//
#include "clang/Frontend/SerializedDiagnosticPrinter.h"
+#include "clang/Frontend/SerializedDiagnosticReader.h"
+#include "clang/Frontend/SerializedDiagnostics.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/Version.h"
#include "clang/Frontend/DiagnosticRenderer.h"
+#include "clang/Frontend/FrontendDiagnostic.h"
+#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/Lex/Lexer.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/SmallString.h"
@@ -86,20 +90,70 @@
void endDiagnostic(DiagOrStoredDiag D,
DiagnosticsEngine::Level Level) override;
};
-
+
+typedef llvm::DenseMap<unsigned, unsigned> AbbrevLookup;
+
+class SDiagsMerger : SerializedDiagnosticReader {
+ SDiagsWriter &Writer;
+ AbbrevLookup FileLookup;
+ AbbrevLookup CategoryLookup;
+ AbbrevLookup DiagFlagLookup;
+
+public:
+ SDiagsMerger(SDiagsWriter &Writer)
+ : SerializedDiagnosticReader(), Writer(Writer) {}
+
+ std::error_code mergeRecordsFromFile(const char *File) {
+ return readDiagnostics(File);
+ }
+
+protected:
+ std::error_code visitStartOfDiagnostic() override;
+ std::error_code visitEndOfDiagnostic() override;
+ std::error_code visitCategoryRecord(unsigned ID, StringRef Name) override;
+ std::error_code visitDiagFlagRecord(unsigned ID, StringRef Name) override;
+ std::error_code visitDiagnosticRecord(
+ unsigned Severity, const serialized_diags::Location &Location,
+ unsigned Category, unsigned Flag, StringRef Message) override;
+ std::error_code visitFilenameRecord(unsigned ID, unsigned Size,
+ unsigned Timestamp,
+ StringRef Name) override;
+ std::error_code visitFixitRecord(const serialized_diags::Location &Start,
+ const serialized_diags::Location &End,
+ StringRef CodeToInsert) override;
+ std::error_code
+ visitSourceRangeRecord(const serialized_diags::Location &Start,
+ const serialized_diags::Location &End) override;
+
+private:
+ std::error_code adjustSourceLocFilename(RecordData &Record,
+ unsigned int offset);
+
+ void adjustAbbrevID(RecordData &Record, AbbrevLookup &Lookup,
+ unsigned NewAbbrev);
+
+ void writeRecordWithAbbrev(unsigned ID, RecordData &Record);
+
+ void writeRecordWithBlob(unsigned ID, RecordData &Record, StringRef Blob);
+};
+
class SDiagsWriter : public DiagnosticConsumer {
friend class SDiagsRenderer;
+ friend class SDiagsMerger;
struct SharedState;
explicit SDiagsWriter(IntrusiveRefCntPtr<SharedState> State)
- : LangOpts(nullptr), OriginalInstance(false), State(State) {}
+ : LangOpts(nullptr), OriginalInstance(false), MergeChildRecords(false),
+ State(State) {}
public:
- SDiagsWriter(raw_ostream *os, DiagnosticOptions *diags)
- : LangOpts(nullptr), OriginalInstance(true),
- State(new SharedState(os, diags))
- {
+ SDiagsWriter(StringRef File, DiagnosticOptions *Diags, bool MergeChildRecords)
+ : LangOpts(nullptr), OriginalInstance(true),
+ MergeChildRecords(MergeChildRecords),
+ State(new SharedState(File, Diags)) {
+ if (MergeChildRecords)
+ RemoveOldDiagnostics();
EmitPreamble();
}
@@ -115,6 +169,14 @@
void finish() override;
private:
+ /// \brief Build a DiagnosticsEngine to emit diagnostics about the diagnostics
+ DiagnosticsEngine *getMetaDiags();
+
+ /// \brief Remove old copies of the serialized diagnostics. This is necessary
+ /// so that we can detect when subprocesses write diagnostics that we should
+ /// merge into our own.
+ void RemoveOldDiagnostics();
+
/// \brief Emit the preamble for the serialized diagnostics.
void EmitPreamble();
@@ -152,7 +214,9 @@
/// \brief Emit the string information for diagnostic flags.
unsigned getEmitDiagnosticFlag(DiagnosticsEngine::Level DiagLevel,
unsigned DiagID = 0);
-
+
+ unsigned getEmitDiagnosticFlag(StringRef DiagName);
+
/// \brief Emit (lazily) the file string and retrieved the file identifier.
unsigned getEmitFile(const char *Filename);
@@ -173,9 +237,6 @@
void AddCharSourceRangeToRecord(CharSourceRange R, RecordDataImpl &Record,
const SourceManager &SM);
- /// \brief The version of the diagnostics file.
- enum { Version = 2 };
-
/// \brief Language options, which can differ from one clone of this client
/// to another.
const LangOptions *LangOpts;
@@ -184,11 +245,16 @@
/// clones), responsible for writing the file at the end.
bool OriginalInstance;
+ /// \brief Whether this instance should aggregate diagnostics that are
+ /// generated from child processes.
+ bool MergeChildRecords;
+
/// \brief State that is shared among the various clones of this diagnostic
/// consumer.
struct SharedState : RefCountedBase<SharedState> {
- SharedState(raw_ostream *os, DiagnosticOptions *diags)
- : DiagOpts(diags), Stream(Buffer), OS(os), EmittedAnyDiagBlocks(false) { }
+ SharedState(StringRef File, DiagnosticOptions *Diags)
+ : DiagOpts(Diags), Stream(Buffer), OutputFile(File.str()),
+ EmittedAnyDiagBlocks(false) {}
/// \brief Diagnostic options.
IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts;
@@ -200,7 +266,7 @@
llvm::BitstreamWriter Stream;
/// \brief The name of the diagnostics file.
- std::unique_ptr<raw_ostream> OS;
+ std::string OutputFile;
/// \brief The set of constructed record abbreviations.
AbbreviationMap Abbrevs;
@@ -227,6 +293,9 @@
/// this becomes \c true, we never close a DIAG block until we know that we're
/// starting another one or we're done.
bool EmittedAnyDiagBlocks;
+
+ /// \brief Engine for emitting diagnostics about the diagnostics.
+ std::unique_ptr<DiagnosticsEngine> MetaDiagnostics;
};
/// \brief State shared among the various clones of this diagnostic consumer.
@@ -236,9 +305,11 @@
namespace clang {
namespace serialized_diags {
-DiagnosticConsumer *create(raw_ostream *OS, DiagnosticOptions *diags) {
- return new SDiagsWriter(OS, diags);
+std::unique_ptr<DiagnosticConsumer>
+create(StringRef OutputFile, DiagnosticOptions *Diags, bool MergeChildRecords) {
+ return llvm::make_unique<SDiagsWriter>(OutputFile, Diags, MergeChildRecords);
}
+
} // end namespace serialized_diags
} // end namespace clang
@@ -465,17 +536,15 @@
Stream.EnterSubblock(BLOCK_META, 3);
Record.clear();
Record.push_back(RECORD_VERSION);
- Record.push_back(Version);
+ Record.push_back(VersionNumber);
Stream.EmitRecordWithAbbrev(Abbrevs.get(RECORD_VERSION), Record);
Stream.ExitBlock();
}
unsigned SDiagsWriter::getEmitCategory(unsigned int category) {
- if (State->Categories.count(category))
+ if (!State->Categories.insert(category).second)
return category;
-
- State->Categories.insert(category);
-
+
// We use a local version of 'Record' so that we can be generating
// another record when we lazily generate one for the category entry.
RecordData Record;
@@ -495,6 +564,10 @@
return 0; // No flag for notes.
StringRef FlagName = DiagnosticIDs::getWarningOptionForDiag(DiagID);
+ return getEmitDiagnosticFlag(FlagName);
+}
+
+unsigned SDiagsWriter::getEmitDiagnosticFlag(StringRef FlagName) {
if (FlagName.empty())
return 0;
@@ -689,6 +762,40 @@
Writer.ExitDiagBlock();
}
+DiagnosticsEngine *SDiagsWriter::getMetaDiags() {
+ // FIXME: It's slightly absurd to create a new diagnostics engine here, but
+ // the other options that are available today are worse:
+ //
+ // 1. Teach DiagnosticsConsumers to emit diagnostics to the engine they are a
+ // part of. The DiagnosticsEngine would need to know not to send
+ // diagnostics back to the consumer that failed. This would require us to
+ // rework ChainedDiagnosticsConsumer and teach the engine about multiple
+ // consumers, which is difficult today because most APIs interface with
+ // consumers rather than the engine itself.
+ //
+ // 2. Pass a DiagnosticsEngine to SDiagsWriter on creation - this would need
+ // to be distinct from the engine the writer was being added to and would
+ // normally not be used.
+ if (!State->MetaDiagnostics) {
+ IntrusiveRefCntPtr<DiagnosticIDs> IDs(new DiagnosticIDs());
+ auto Client =
+ new TextDiagnosticPrinter(llvm::errs(), State->DiagOpts.get());
+ State->MetaDiagnostics = llvm::make_unique<DiagnosticsEngine>(
+ IDs, State->DiagOpts.get(), Client);
+ }
+ return State->MetaDiagnostics.get();
+}
+
+void SDiagsWriter::RemoveOldDiagnostics() {
+ if (!llvm::sys::fs::remove(State->OutputFile))
+ return;
+
+ getMetaDiags()->Report(diag::warn_fe_serialized_diag_merge_failure);
+ // Disable merging child records, as whatever is in this file may be
+ // misleading.
+ MergeChildRecords = false;
+}
+
void SDiagsWriter::finish() {
// The original instance is responsible for writing the file.
if (!OriginalInstance)
@@ -698,9 +805,113 @@
if (State->EmittedAnyDiagBlocks)
ExitDiagBlock();
- // Write the generated bitstream to "Out".
- State->OS->write((char *)&State->Buffer.front(), State->Buffer.size());
- State->OS->flush();
+ if (MergeChildRecords) {
+ if (!State->EmittedAnyDiagBlocks)
+ // We have no diagnostics of our own, so we can just leave the child
+ // process' output alone
+ return;
- State->OS.reset(nullptr);
+ if (llvm::sys::fs::exists(State->OutputFile))
+ if (SDiagsMerger(*this).mergeRecordsFromFile(State->OutputFile.c_str()))
+ getMetaDiags()->Report(diag::warn_fe_serialized_diag_merge_failure);
+ }
+
+ std::error_code EC;
+ auto OS = llvm::make_unique<llvm::raw_fd_ostream>(State->OutputFile.c_str(),
+ EC, llvm::sys::fs::F_None);
+ if (EC) {
+ getMetaDiags()->Report(diag::warn_fe_serialized_diag_failure)
+ << State->OutputFile << EC.message();
+ return;
+ }
+
+ // Write the generated bitstream to "Out".
+ OS->write((char *)&State->Buffer.front(), State->Buffer.size());
+ OS->flush();
+}
+
+std::error_code SDiagsMerger::visitStartOfDiagnostic() {
+ Writer.EnterDiagBlock();
+ return std::error_code();
+}
+
+std::error_code SDiagsMerger::visitEndOfDiagnostic() {
+ Writer.ExitDiagBlock();
+ return std::error_code();
+}
+
+std::error_code
+SDiagsMerger::visitSourceRangeRecord(const serialized_diags::Location &Start,
+ const serialized_diags::Location &End) {
+ RecordData Record;
+ Record.push_back(RECORD_SOURCE_RANGE);
+ Record.push_back(FileLookup[Start.FileID]);
+ Record.push_back(Start.Line);
+ Record.push_back(Start.Col);
+ Record.push_back(Start.Offset);
+ Record.push_back(FileLookup[End.FileID]);
+ Record.push_back(End.Line);
+ Record.push_back(End.Col);
+ Record.push_back(End.Offset);
+
+ Writer.State->Stream.EmitRecordWithAbbrev(
+ Writer.State->Abbrevs.get(RECORD_SOURCE_RANGE), Record);
+ return std::error_code();
+}
+
+std::error_code SDiagsMerger::visitDiagnosticRecord(
+ unsigned Severity, const serialized_diags::Location &Location,
+ unsigned Category, unsigned Flag, StringRef Message) {
+ RecordData MergedRecord;
+ MergedRecord.push_back(RECORD_DIAG);
+ MergedRecord.push_back(Severity);
+ MergedRecord.push_back(FileLookup[Location.FileID]);
+ MergedRecord.push_back(Location.Line);
+ MergedRecord.push_back(Location.Col);
+ MergedRecord.push_back(Location.Offset);
+ MergedRecord.push_back(CategoryLookup[Category]);
+ MergedRecord.push_back(Flag ? DiagFlagLookup[Flag] : 0);
+ MergedRecord.push_back(Message.size());
+
+ Writer.State->Stream.EmitRecordWithBlob(
+ Writer.State->Abbrevs.get(RECORD_DIAG), MergedRecord, Message);
+ return std::error_code();
+}
+
+std::error_code
+SDiagsMerger::visitFixitRecord(const serialized_diags::Location &Start,
+ const serialized_diags::Location &End,
+ StringRef Text) {
+ RecordData Record;
+ Record.push_back(RECORD_FIXIT);
+ Record.push_back(FileLookup[Start.FileID]);
+ Record.push_back(Start.Line);
+ Record.push_back(Start.Col);
+ Record.push_back(Start.Offset);
+ Record.push_back(FileLookup[End.FileID]);
+ Record.push_back(End.Line);
+ Record.push_back(End.Col);
+ Record.push_back(End.Offset);
+ Record.push_back(Text.size());
+
+ Writer.State->Stream.EmitRecordWithBlob(
+ Writer.State->Abbrevs.get(RECORD_FIXIT), Record, Text);
+ return std::error_code();
+}
+
+std::error_code SDiagsMerger::visitFilenameRecord(unsigned ID, unsigned Size,
+ unsigned Timestamp,
+ StringRef Name) {
+ FileLookup[ID] = Writer.getEmitFile(Name.str().c_str());
+ return std::error_code();
+}
+
+std::error_code SDiagsMerger::visitCategoryRecord(unsigned ID, StringRef Name) {
+ CategoryLookup[ID] = Writer.getEmitCategory(ID);
+ return std::error_code();
+}
+
+std::error_code SDiagsMerger::visitDiagFlagRecord(unsigned ID, StringRef Name) {
+ DiagFlagLookup[ID] = Writer.getEmitDiagnosticFlag(Name);
+ return std::error_code();
}
diff --git a/lib/Frontend/SerializedDiagnosticReader.cpp b/lib/Frontend/SerializedDiagnosticReader.cpp
new file mode 100644
index 0000000..c8faef3
--- /dev/null
+++ b/lib/Frontend/SerializedDiagnosticReader.cpp
@@ -0,0 +1,295 @@
+//===--- SerializedDiagnosticReader.cpp - Reads diagnostics ---------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Frontend/SerializedDiagnosticReader.h"
+#include "clang/Frontend/SerializedDiagnostics.h"
+#include "clang/Basic/FileManager.h"
+#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MemoryBuffer.h"
+
+using namespace clang;
+using namespace clang::serialized_diags;
+
+std::error_code SerializedDiagnosticReader::readDiagnostics(StringRef File) {
+ // Open the diagnostics file.
+ FileSystemOptions FO;
+ FileManager FileMgr(FO);
+
+ auto Buffer = FileMgr.getBufferForFile(File);
+ if (!Buffer)
+ return SDError::CouldNotLoad;
+
+ llvm::BitstreamReader StreamFile;
+ StreamFile.init((const unsigned char *)(*Buffer)->getBufferStart(),
+ (const unsigned char *)(*Buffer)->getBufferEnd());
+
+ llvm::BitstreamCursor Stream(StreamFile);
+
+ // Sniff for the signature.
+ if (Stream.Read(8) != 'D' ||
+ Stream.Read(8) != 'I' ||
+ Stream.Read(8) != 'A' ||
+ Stream.Read(8) != 'G')
+ return SDError::InvalidSignature;
+
+ // Read the top level blocks.
+ while (!Stream.AtEndOfStream()) {
+ if (Stream.ReadCode() != llvm::bitc::ENTER_SUBBLOCK)
+ return SDError::InvalidDiagnostics;
+
+ std::error_code EC;
+ switch (Stream.ReadSubBlockID()) {
+ case llvm::bitc::BLOCKINFO_BLOCK_ID:
+ if (Stream.ReadBlockInfoBlock())
+ return SDError::MalformedBlockInfoBlock;
+ continue;
+ case BLOCK_META:
+ if ((EC = readMetaBlock(Stream)))
+ return EC;
+ continue;
+ case BLOCK_DIAG:
+ if ((EC = readDiagnosticBlock(Stream)))
+ return EC;
+ continue;
+ default:
+ if (!Stream.SkipBlock())
+ return SDError::MalformedTopLevelBlock;
+ continue;
+ }
+ }
+ return std::error_code();
+}
+
+enum class SerializedDiagnosticReader::Cursor {
+ Record = 1,
+ BlockEnd,
+ BlockBegin
+};
+
+llvm::ErrorOr<SerializedDiagnosticReader::Cursor>
+SerializedDiagnosticReader::skipUntilRecordOrBlock(
+ llvm::BitstreamCursor &Stream, unsigned &BlockOrRecordID) {
+ BlockOrRecordID = 0;
+
+ while (!Stream.AtEndOfStream()) {
+ unsigned Code = Stream.ReadCode();
+
+ switch ((llvm::bitc::FixedAbbrevIDs)Code) {
+ case llvm::bitc::ENTER_SUBBLOCK:
+ BlockOrRecordID = Stream.ReadSubBlockID();
+ return Cursor::BlockBegin;
+
+ case llvm::bitc::END_BLOCK:
+ if (Stream.ReadBlockEnd())
+ return SDError::InvalidDiagnostics;
+ return Cursor::BlockEnd;
+
+ case llvm::bitc::DEFINE_ABBREV:
+ Stream.ReadAbbrevRecord();
+ continue;
+
+ case llvm::bitc::UNABBREV_RECORD:
+ return SDError::UnsupportedConstruct;
+
+ default:
+ // We found a record.
+ BlockOrRecordID = Code;
+ return Cursor::Record;
+ }
+ }
+
+ return SDError::InvalidDiagnostics;
+}
+
+std::error_code
+SerializedDiagnosticReader::readMetaBlock(llvm::BitstreamCursor &Stream) {
+ if (Stream.EnterSubBlock(clang::serialized_diags::BLOCK_META))
+ return SDError::MalformedMetadataBlock;
+
+ bool VersionChecked = false;
+
+ while (true) {
+ unsigned BlockOrCode = 0;
+ llvm::ErrorOr<Cursor> Res = skipUntilRecordOrBlock(Stream, BlockOrCode);
+ if (!Res)
+ Res.getError();
+
+ switch (Res.get()) {
+ case Cursor::Record:
+ break;
+ case Cursor::BlockBegin:
+ if (Stream.SkipBlock())
+ return SDError::MalformedMetadataBlock;
+ case Cursor::BlockEnd:
+ if (!VersionChecked)
+ return SDError::MissingVersion;
+ return std::error_code();
+ }
+
+ SmallVector<uint64_t, 1> Record;
+ unsigned RecordID = Stream.readRecord(BlockOrCode, Record);
+
+ if (RecordID == RECORD_VERSION) {
+ if (Record.size() < 1)
+ return SDError::MissingVersion;
+ if (Record[0] > VersionNumber)
+ return SDError::VersionMismatch;
+ VersionChecked = true;
+ }
+ }
+}
+
+std::error_code
+SerializedDiagnosticReader::readDiagnosticBlock(llvm::BitstreamCursor &Stream) {
+ if (Stream.EnterSubBlock(clang::serialized_diags::BLOCK_DIAG))
+ return SDError::MalformedDiagnosticBlock;
+
+ std::error_code EC;
+ if ((EC = visitStartOfDiagnostic()))
+ return EC;
+
+ SmallVector<uint64_t, 16> Record;
+ while (true) {
+ unsigned BlockOrCode = 0;
+ llvm::ErrorOr<Cursor> Res = skipUntilRecordOrBlock(Stream, BlockOrCode);
+ if (!Res)
+ Res.getError();
+
+ switch (Res.get()) {
+ case Cursor::BlockBegin:
+ // The only blocks we care about are subdiagnostics.
+ if (BlockOrCode == serialized_diags::BLOCK_DIAG) {
+ if ((EC = readDiagnosticBlock(Stream)))
+ return EC;
+ } else if (!Stream.SkipBlock())
+ return SDError::MalformedSubBlock;
+ continue;
+ case Cursor::BlockEnd:
+ if ((EC = visitEndOfDiagnostic()))
+ return EC;
+ return std::error_code();
+ case Cursor::Record:
+ break;
+ }
+
+ // Read the record.
+ Record.clear();
+ StringRef Blob;
+ unsigned RecID = Stream.readRecord(BlockOrCode, Record, &Blob);
+
+ if (RecID < serialized_diags::RECORD_FIRST ||
+ RecID > serialized_diags::RECORD_LAST)
+ continue;
+
+ switch ((RecordIDs)RecID) {
+ case RECORD_CATEGORY:
+ // A category has ID and name size.
+ if (Record.size() != 2)
+ return SDError::MalformedDiagnosticRecord;
+ if ((EC = visitCategoryRecord(Record[0], Blob)))
+ return EC;
+ continue;
+ case RECORD_DIAG:
+ // A diagnostic has severity, location (4), category, flag, and message
+ // size.
+ if (Record.size() != 8)
+ return SDError::MalformedDiagnosticRecord;
+ if ((EC = visitDiagnosticRecord(
+ Record[0], Location(Record[1], Record[2], Record[3], Record[4]),
+ Record[5], Record[6], Blob)))
+ return EC;
+ continue;
+ case RECORD_DIAG_FLAG:
+ // A diagnostic flag has ID and name size.
+ if (Record.size() != 2)
+ return SDError::MalformedDiagnosticRecord;
+ if ((EC = visitDiagFlagRecord(Record[0], Blob)))
+ return EC;
+ continue;
+ case RECORD_FILENAME:
+ // A filename has ID, size, timestamp, and name size. The size and
+ // timestamp are legacy fields that are always zero these days.
+ if (Record.size() != 4)
+ return SDError::MalformedDiagnosticRecord;
+ if ((EC = visitFilenameRecord(Record[0], Record[1], Record[2], Blob)))
+ return EC;
+ continue;
+ case RECORD_FIXIT:
+ // A fixit has two locations (4 each) and message size.
+ if (Record.size() != 9)
+ return SDError::MalformedDiagnosticRecord;
+ if ((EC = visitFixitRecord(
+ Location(Record[0], Record[1], Record[2], Record[3]),
+ Location(Record[4], Record[5], Record[6], Record[7]), Blob)))
+ return EC;
+ continue;
+ case RECORD_SOURCE_RANGE:
+ // A source range is two locations (4 each).
+ if (Record.size() != 8)
+ return SDError::MalformedDiagnosticRecord;
+ if ((EC = visitSourceRangeRecord(
+ Location(Record[0], Record[1], Record[2], Record[3]),
+ Location(Record[4], Record[5], Record[6], Record[7]))))
+ return EC;
+ continue;
+ case RECORD_VERSION:
+ // A version is just a number.
+ if (Record.size() != 1)
+ return SDError::MalformedDiagnosticRecord;
+ if ((EC = visitVersionRecord(Record[0])))
+ return EC;
+ continue;
+ }
+ }
+}
+
+namespace {
+class SDErrorCategoryType final : public std::error_category {
+ const char *name() const LLVM_NOEXCEPT override {
+ return "clang.serialized_diags";
+ }
+ std::string message(int IE) const override {
+ SDError E = static_cast<SDError>(IE);
+ switch (E) {
+ case SDError::CouldNotLoad:
+ return "Failed to open diagnostics file";
+ case SDError::InvalidSignature:
+ return "Invalid diagnostics signature";
+ case SDError::InvalidDiagnostics:
+ return "Parse error reading diagnostics";
+ case SDError::MalformedTopLevelBlock:
+ return "Malformed block at top-level of diagnostics";
+ case SDError::MalformedSubBlock:
+ return "Malformed sub-block in a diagnostic";
+ case SDError::MalformedBlockInfoBlock:
+ return "Malformed BlockInfo block";
+ case SDError::MalformedMetadataBlock:
+ return "Malformed Metadata block";
+ case SDError::MalformedDiagnosticBlock:
+ return "Malformed Diagnostic block";
+ case SDError::MalformedDiagnosticRecord:
+ return "Malformed Diagnostic record";
+ case SDError::MissingVersion:
+ return "No version provided in diagnostics";
+ case SDError::VersionMismatch:
+ return "Unsupported diagnostics version";
+ case SDError::UnsupportedConstruct:
+ return "Bitcode constructs that are not supported in diagnostics appear";
+ case SDError::HandlerFailed:
+ return "Generic error occurred while handling a record";
+ }
+ llvm_unreachable("Unknown error type!");
+ }
+};
+}
+
+static llvm::ManagedStatic<SDErrorCategoryType> ErrorCategory;
+const std::error_category &clang::serialized_diags::SDErrorCategory() {
+ return *ErrorCategory;
+}
diff --git a/lib/Frontend/TextDiagnostic.cpp b/lib/Frontend/TextDiagnostic.cpp
index dc67d68..6e6f3dd 100644
--- a/lib/Frontend/TextDiagnostic.cpp
+++ b/lib/Frontend/TextDiagnostic.cpp
@@ -808,7 +808,8 @@
if (DiagOpts->getFormat() == DiagnosticOptions::Msvc) {
OS << ',';
// Visual Studio 2010 or earlier expects column number to be off by one
- if (LangOpts.MSCVersion && LangOpts.MSCVersion < 170000000)
+ if (LangOpts.MSCompatibilityVersion &&
+ LangOpts.MSCompatibilityVersion < 170000000)
ColNo--;
} else
OS << ':';
diff --git a/lib/Frontend/TextDiagnosticPrinter.cpp b/lib/Frontend/TextDiagnosticPrinter.cpp
index 6271509..66b46b7 100644
--- a/lib/Frontend/TextDiagnosticPrinter.cpp
+++ b/lib/Frontend/TextDiagnosticPrinter.cpp
@@ -43,7 +43,7 @@
}
void TextDiagnosticPrinter::EndSourceFile() {
- TextDiag.reset(nullptr);
+ TextDiag.reset();
}
/// \brief Print any diagnostic option information to a raw_ostream.
diff --git a/lib/Frontend/VerifyDiagnosticConsumer.cpp b/lib/Frontend/VerifyDiagnosticConsumer.cpp
index b50950e..3ff6b18 100644
--- a/lib/Frontend/VerifyDiagnosticConsumer.cpp
+++ b/lib/Frontend/VerifyDiagnosticConsumer.cpp
@@ -27,14 +27,13 @@
typedef VerifyDiagnosticConsumer::DirectiveList DirectiveList;
typedef VerifyDiagnosticConsumer::ExpectedData ExpectedData;
-VerifyDiagnosticConsumer::VerifyDiagnosticConsumer(DiagnosticsEngine &_Diags)
- : Diags(_Diags),
- PrimaryClient(Diags.getClient()), OwnsPrimaryClient(Diags.ownsClient()),
+VerifyDiagnosticConsumer::VerifyDiagnosticConsumer(DiagnosticsEngine &Diags_)
+ : Diags(Diags_),
+ PrimaryClient(Diags.getClient()), PrimaryClientOwner(Diags.takeClient()),
Buffer(new TextDiagnosticBuffer()), CurrentPreprocessor(nullptr),
LangOpts(nullptr), SrcManager(nullptr), ActiveSourceFiles(0),
Status(HasNoDirectives)
{
- Diags.takeClient();
if (Diags.hasSourceManager())
setSourceManager(Diags.getSourceManager());
}
@@ -43,10 +42,8 @@
assert(!ActiveSourceFiles && "Incomplete parsing of source files!");
assert(!CurrentPreprocessor && "CurrentPreprocessor should be invalid!");
SrcManager = nullptr;
- CheckDiagnostics();
- Diags.takeClient();
- if (OwnsPrimaryClient)
- delete PrimaryClient;
+ CheckDiagnostics();
+ Diags.takeClient().release();
}
#ifndef NDEBUG
@@ -84,8 +81,8 @@
const_cast<Preprocessor*>(PP)->addCommentHandler(this);
#ifndef NDEBUG
// Debug build tracks parsed files.
- VerifyFileTracker *V = new VerifyFileTracker(*this, *SrcManager);
- const_cast<Preprocessor*>(PP)->addPPCallbacks(V);
+ const_cast<Preprocessor*>(PP)->addPPCallbacks(
+ llvm::make_unique<VerifyFileTracker>(*this, *SrcManager));
#endif
}
}
@@ -402,8 +399,9 @@
// Lookup file via Preprocessor, like a #include.
const DirectoryLookup *CurDir;
- const FileEntry *FE = PP->LookupFile(Pos, Filename, false, nullptr,
- CurDir, nullptr, nullptr, nullptr);
+ const FileEntry *FE =
+ PP->LookupFile(Pos, Filename, false, nullptr, nullptr, CurDir,
+ nullptr, nullptr, nullptr);
if (!FE) {
Diags.Report(Pos.getLocWithOffset(PH.C-PH.Begin),
diag::err_verify_missing_file) << Filename << KindStr;
@@ -502,13 +500,12 @@
}
// Construct new directive.
- std::unique_ptr<Directive> D(
- Directive::create(RegexKind, Pos, ExpectedLoc, MatchAnyLine, Text,
- Min, Max));
+ std::unique_ptr<Directive> D = Directive::create(
+ RegexKind, Pos, ExpectedLoc, MatchAnyLine, Text, Min, Max);
std::string Error;
if (D->isValid(Error)) {
- DL->push_back(D.release());
+ DL->push_back(std::move(D));
FoundDirective = true;
} else {
Diags.Report(Pos.getLocWithOffset(ContentBegin-PH.Begin),
@@ -644,15 +641,16 @@
/// \brief Takes a list of diagnostics that were expected to have been generated
/// but were not and produces a diagnostic to the user from this.
-static unsigned PrintExpected(DiagnosticsEngine &Diags, SourceManager &SourceMgr,
- DirectiveList &DL, const char *Kind) {
+static unsigned PrintExpected(DiagnosticsEngine &Diags,
+ SourceManager &SourceMgr,
+ std::vector<Directive *> &DL, const char *Kind) {
if (DL.empty())
return 0;
SmallString<256> Fmt;
llvm::raw_svector_ostream OS(Fmt);
- for (DirectiveList::iterator I = DL.begin(), E = DL.end(); I != E; ++I) {
- Directive &D = **I;
+ for (auto *DirPtr : DL) {
+ Directive &D = *DirPtr;
OS << "\n File " << SourceMgr.getFilename(D.DiagnosticLoc);
if (D.MatchAnyLine)
OS << " Line *";
@@ -694,11 +692,11 @@
DirectiveList &Left,
const_diag_iterator d2_begin,
const_diag_iterator d2_end) {
- DirectiveList LeftOnly;
+ std::vector<Directive *> LeftOnly;
DiagList Right(d2_begin, d2_end);
- for (DirectiveList::iterator I = Left.begin(), E = Left.end(); I != E; ++I) {
- Directive& D = **I;
+ for (auto &Owner : Left) {
+ Directive &D = *Owner;
unsigned LineNo1 = SourceMgr.getPresumedLineNumber(D.DiagnosticLoc);
for (unsigned i = 0; i < D.Max; ++i) {
@@ -720,7 +718,7 @@
if (II == IE) {
// Not found.
if (i >= D.Min) break;
- LeftOnly.push_back(*I);
+ LeftOnly.push_back(&D);
} else {
// Found. The same cannot be found twice.
Right.erase(II);
@@ -801,8 +799,8 @@
void VerifyDiagnosticConsumer::CheckDiagnostics() {
// Ensure any diagnostics go to the primary client.
- bool OwnsCurClient = Diags.ownsClient();
- DiagnosticConsumer *CurClient = Diags.takeClient();
+ DiagnosticConsumer *CurClient = Diags.getClient();
+ std::unique_ptr<DiagnosticConsumer> Owner = Diags.takeClient();
Diags.setClient(PrimaryClient, false);
#ifndef NDEBUG
@@ -864,20 +862,21 @@
Buffer->note_end(), "note"));
}
- Diags.takeClient();
- Diags.setClient(CurClient, OwnsCurClient);
+ Diags.setClient(CurClient, Owner.release() != nullptr);
// Reset the buffer, we have processed all the diagnostics in it.
Buffer.reset(new TextDiagnosticBuffer());
ED.Reset();
}
-Directive *Directive::create(bool RegexKind, SourceLocation DirectiveLoc,
- SourceLocation DiagnosticLoc, bool MatchAnyLine,
- StringRef Text, unsigned Min, unsigned Max) {
+std::unique_ptr<Directive> Directive::create(bool RegexKind,
+ SourceLocation DirectiveLoc,
+ SourceLocation DiagnosticLoc,
+ bool MatchAnyLine, StringRef Text,
+ unsigned Min, unsigned Max) {
if (!RegexKind)
- return new StandardDirective(DirectiveLoc, DiagnosticLoc, MatchAnyLine,
- Text, Min, Max);
+ return llvm::make_unique<StandardDirective>(DirectiveLoc, DiagnosticLoc,
+ MatchAnyLine, Text, Min, Max);
// Parse the directive into a regular expression.
std::string RegexStr;
@@ -902,6 +901,6 @@
}
}
- return new RegexDirective(DirectiveLoc, DiagnosticLoc, MatchAnyLine, Text,
- Min, Max, RegexStr);
+ return llvm::make_unique<RegexDirective>(
+ DirectiveLoc, DiagnosticLoc, MatchAnyLine, Text, Min, Max, RegexStr);
}