Update aosp/master Clang for rebase to r222490.
Change-Id: Ic557ac55e97fbf6ee08771c7b7c3594777b0aefd
diff --git a/lib/Rewrite/Core/Android.mk b/lib/Rewrite/Android.mk
similarity index 79%
rename from lib/Rewrite/Core/Android.mk
rename to lib/Rewrite/Android.mk
index 1dcd5cd..817f31b 100644
--- a/lib/Rewrite/Core/Android.mk
+++ b/lib/Rewrite/Android.mk
@@ -12,7 +12,7 @@
DiagnosticFrontendKinds.inc \
StmtNodes.inc
-clang_rewrite_core_SRC_FILES := \
+clang_rewrite_SRC_FILES := \
DeltaTree.cpp \
HTMLRewrite.cpp \
RewriteRope.cpp \
@@ -23,8 +23,8 @@
# =====================================================
include $(CLEAR_VARS)
-LOCAL_SRC_FILES := $(clang_rewrite_core_SRC_FILES)
-LOCAL_MODULE:= libclangRewriteCore
+LOCAL_SRC_FILES := $(clang_rewrite_SRC_FILES)
+LOCAL_MODULE:= libclangRewrite
LOCAL_MODULE_TAGS := optional
include $(CLANG_HOST_BUILD_MK)
@@ -35,8 +35,8 @@
# =====================================================
include $(CLEAR_VARS)
-LOCAL_SRC_FILES := $(clang_rewrite_core_SRC_FILES)
-LOCAL_MODULE:= libclangRewriteCore
+LOCAL_SRC_FILES := $(clang_rewrite_SRC_FILES)
+LOCAL_MODULE:= libclangRewrite
LOCAL_MODULE_TAGS := optional
include $(CLANG_DEVICE_BUILD_MK)
diff --git a/lib/Rewrite/CMakeLists.txt b/lib/Rewrite/CMakeLists.txt
index d3d7543..16550b1 100644
--- a/lib/Rewrite/CMakeLists.txt
+++ b/lib/Rewrite/CMakeLists.txt
@@ -1,2 +1,15 @@
-add_subdirectory(Core)
-add_subdirectory(Frontend)
+set(LLVM_LINK_COMPONENTS
+ Support
+ )
+
+add_clang_library(clangRewrite
+ DeltaTree.cpp
+ HTMLRewrite.cpp
+ RewriteRope.cpp
+ Rewriter.cpp
+ TokenRewriter.cpp
+
+ LINK_LIBS
+ clangBasic
+ clangLex
+ )
diff --git a/lib/Rewrite/Core/CMakeLists.txt b/lib/Rewrite/Core/CMakeLists.txt
deleted file mode 100644
index 896382c..0000000
--- a/lib/Rewrite/Core/CMakeLists.txt
+++ /dev/null
@@ -1,16 +0,0 @@
-set(LLVM_LINK_COMPONENTS
- Support
- )
-
-add_clang_library(clangRewriteCore
- DeltaTree.cpp
- HTMLRewrite.cpp
- RewriteRope.cpp
- Rewriter.cpp
- TokenRewriter.cpp
-
- LINK_LIBS
- clangAST
- clangBasic
- clangLex
- )
diff --git a/lib/Rewrite/Core/Makefile b/lib/Rewrite/Core/Makefile
deleted file mode 100644
index 8c8d2e4..0000000
--- a/lib/Rewrite/Core/Makefile
+++ /dev/null
@@ -1,18 +0,0 @@
-##===- 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 := clangRewriteCore
-
-include $(CLANG_LEVEL)/Makefile
-
diff --git a/lib/Rewrite/Core/DeltaTree.cpp b/lib/Rewrite/DeltaTree.cpp
similarity index 100%
rename from lib/Rewrite/Core/DeltaTree.cpp
rename to lib/Rewrite/DeltaTree.cpp
diff --git a/lib/Rewrite/Frontend/Android.mk b/lib/Rewrite/Frontend/Android.mk
deleted file mode 100644
index f23e746..0000000
--- a/lib/Rewrite/Frontend/Android.mk
+++ /dev/null
@@ -1,48 +0,0 @@
-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/Rewrite/Frontend/CMakeLists.txt b/lib/Rewrite/Frontend/CMakeLists.txt
deleted file mode 100644
index 85af97d..0000000
--- a/lib/Rewrite/Frontend/CMakeLists.txt
+++ /dev/null
@@ -1,22 +0,0 @@
-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
- clangRewriteCore
- )
diff --git a/lib/Rewrite/Frontend/FixItRewriter.cpp b/lib/Rewrite/Frontend/FixItRewriter.cpp
deleted file mode 100644
index 8b7af71..0000000
--- a/lib/Rewrite/Frontend/FixItRewriter.cpp
+++ /dev/null
@@ -1,200 +0,0 @@
-//===--- 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) {
- OwnsClient = Diags.ownsClient();
- Client = Diags.takeClient();
- Diags.setClient(this);
-}
-
-FixItRewriter::~FixItRewriter() {
- Diags.takeClient();
- Diags.setClient(Client, OwnsClient);
-}
-
-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::string Err;
- 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.c_str(), Err,
- llvm::sys::fs::F_None));
- }
- if (!Err.empty()) {
- Diags.Report(clang::diag::err_fe_unable_to_open_output)
- << Filename << Err;
- 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.takeClient();
- Diags.setClient(Client);
- Diags.Clear();
- Diags.Report(Loc, DiagID);
- Diags.takeClient();
- Diags.setClient(this);
-}
-
-FixItOptions::~FixItOptions() {}
diff --git a/lib/Rewrite/Frontend/FrontendActions.cpp b/lib/Rewrite/Frontend/FrontendActions.cpp
deleted file mode 100644
index 4394e99..0000000
--- a/lib/Rewrite/Frontend/FrontendActions.cpp
+++ /dev/null
@@ -1,192 +0,0 @@
-//===--- 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
-//===----------------------------------------------------------------------===//
-
-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() {}
-
-ASTConsumer *FixItAction::CreateASTConsumer(CompilerInstance &CI,
- StringRef InFile) {
- return new 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;
-}
-
-//===----------------------------------------------------------------------===//
-// Preprocessor Actions
-//===----------------------------------------------------------------------===//
-
-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;
-}
-
-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/Rewrite/Frontend/HTMLPrint.cpp b/lib/Rewrite/Frontend/HTMLPrint.cpp
deleted file mode 100644
index 64da05f..0000000
--- a/lib/Rewrite/Frontend/HTMLPrint.cpp
+++ /dev/null
@@ -1,94 +0,0 @@
-//===--- 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;
- };
-}
-
-ASTConsumer* clang::CreateHTMLPrinter(raw_ostream *OS,
- Preprocessor &PP,
- bool SyntaxHighlight,
- bool HighlightMacros) {
- return new 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/Rewrite/Frontend/InclusionRewriter.cpp b/lib/Rewrite/Frontend/InclusionRewriter.cpp
deleted file mode 100644
index aa7017b..0000000
--- a/lib/Rewrite/Frontend/InclusionRewriter.cpp
+++ /dev/null
@@ -1,547 +0,0 @@
-//===--- 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.
- 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;
- }
-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 EOL, StringRef Extra = StringRef());
- void WriteImplicitModuleImport(const Module *Mod, StringRef EOL);
- 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), 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 EOL, 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 << EOL;
-}
-
-void InclusionRewriter::WriteImplicitModuleImport(const Module *Mod,
- StringRef EOL) {
- OS << "@import " << Mod->getFullModuleName() << ";"
- << " /* clang -frewrite-includes: implicit import */" << EOL;
-}
-
-/// 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
- const char *Pos = strchr(FromFile.getBufferStart(), '\n');
- if (!Pos)
- return "\n";
- if (Pos + 1 < FromFile.getBufferEnd() && Pos[1] == '\r')
- return "\n\r";
- if (Pos - 1 >= FromFile.getBufferStart() && Pos[-1] == '\r')
- return "\r\n";
- return "\n";
-}
-
-/// 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 EOL, int &Line,
- bool EnsureNewline) {
- if (WriteTo <= WriteFrom)
- return;
- if (&FromFile == PredefinesBuffer) {
- // Ignore the #defines of the predefines buffer.
- WriteFrom = WriteTo;
- return;
- }
- OS.write(FromFile.getBufferStart() + WriteFrom, WriteTo - WriteFrom);
- // count lines manually, it's faster than getPresumedLoc()
- Line += std::count(FromFile.getBufferStart() + WriteFrom,
- FromFile.getBufferStart() + WriteTo, '\n');
- if (EnsureNewline) {
- char LastChar = FromFile.getBufferStart()[WriteTo - 1];
- if (LastChar != '\n' && LastChar != '\r')
- OS << EOL;
- }
- 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 EOL,
- unsigned &NextToWrite, int &Line) {
- OutputContentUpTo(FromFile, NextToWrite,
- SM.getFileOffset(StartToken.getLocation()), EOL, 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 */" << EOL;
- OutputContentUpTo(FromFile, NextToWrite,
- SM.getFileOffset(DirectiveToken.getLocation()) + DirectiveToken.getLength(),
- EOL, Line, true);
- OS << "#endif /* expanded by -frewrite-includes */" << EOL;
-}
-
-/// 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 *File = PP.getHeaderSearchInfo().LookupFile(
- Filename, SourceLocation(), isAngled, nullptr, CurDir,
- PP.getSourceManager().getFileEntryForID(FileId), 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 EOL = DetectEOL(FromFile);
-
- // Per the GNU docs: "1" indicates entering a new file.
- if (FileId == SM.getMainFileID() || FileId == PP.getPredefinesFileID())
- WriteLineInfo(FileName, 1, FileType, EOL, "");
- else
- WriteLineInfo(FileName, 1, FileType, EOL, " 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, EOL, NextToWrite,
- Line);
- if (FileId != PP.getPredefinesFileID())
- WriteLineInfo(FileName, Line - 1, FileType, EOL, "");
- StringRef LineInfoExtra;
- if (const FileChange *Change = FindFileChangeLocation(
- HashToken.getLocation())) {
- if (Change->Mod) {
- WriteImplicitModuleImport(Change->Mod, EOL);
-
- // 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, EOL, 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, EOL,
- NextToWrite, Line);
- // update our own type
- FileType = SM.getFileCharacteristic(RawToken.getLocation());
- WriteLineInfo(FileName, Line, FileType, EOL);
- }
- } else if (Identifier == "once") {
- // keep the directive in, commented out
- CommentOutDirective(RawLex, HashToken, FromFile, EOL,
- NextToWrite, Line);
- WriteLineInfo(FileName, Line, FileType, EOL);
- }
- 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),
- EOL, Line, false);
- OS << '(' << (int) HasFile << ")/*";
- OutputContentUpTo(FromFile, NextToWrite,
- SM.getFileOffset(RawToken.getLocation()) +
- RawToken.getLength(),
- EOL, Line, false);
- OS << "*/";
- }
- } while (RawToken.isNot(tok::eod));
- if (elif) {
- OutputContentUpTo(FromFile, NextToWrite,
- SM.getFileOffset(RawToken.getLocation()) +
- RawToken.getLength(),
- EOL, Line, /*EnsureNewLine*/ true);
- WriteLineInfo(FileName, Line, FileType, EOL);
- }
- 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(),
- EOL, Line, /*EnsureNewLine*/ true);
- WriteLineInfo(FileName, Line, FileType, EOL);
- RawLex.SetKeepWhitespaceMode(false);
- }
- default:
- break;
- }
- }
- RawLex.setParsingPreprocessorDirective(false);
- }
- RawLex.LexFromRawLexer(RawToken);
- }
- OutputContentUpTo(FromFile, NextToWrite,
- SM.getFileOffset(SM.getLocForEndOfFile(FileId)), EOL, 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);
- PP.addPPCallbacks(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/Rewrite/Frontend/Makefile b/lib/Rewrite/Frontend/Makefile
deleted file mode 100644
index ac97d40..0000000
--- a/lib/Rewrite/Frontend/Makefile
+++ /dev/null
@@ -1,18 +0,0 @@
-##===- 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
-
diff --git a/lib/Rewrite/Frontend/RewriteMacros.cpp b/lib/Rewrite/Frontend/RewriteMacros.cpp
deleted file mode 100644
index 0d0a991..0000000
--- a/lib/Rewrite/Frontend/RewriteMacros.cpp
+++ /dev/null
@@ -1,217 +0,0 @@
-//===--- 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/Rewrite/Frontend/RewriteModernObjC.cpp b/lib/Rewrite/Frontend/RewriteModernObjC.cpp
deleted file mode 100644
index 43de31c..0000000
--- a/lib/Rewrite/Frontend/RewriteModernObjC.cpp
+++ /dev/null
@@ -1,7756 +0,0 @@
-//===--- 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>
-
-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) {
- Stmt *ReplacingStmt = ReplacedNodes[Old];
-
- if (ReplacingStmt)
- return; // We can't rewrite the same node twice.
-
- if (DisableReplaceStmt)
- return;
-
- // If replacement succeeded or warning disabled return with no warning.
- if (!Rewrite.ReplaceStmt(Old, New)) {
- ReplacedNodes[Old] = New;
- return;
- }
- if (SilenceRewriteMacroWarning)
- return;
- Diags.Report(Context->getFullLoc(Old->getLocStart()), RewriteFailedDiag)
- << Old->getSourceRange();
- }
-
- void ReplaceStmtWithRange(Stmt *Old, Stmt *New, SourceRange SrcRange) {
- assert(Old != nullptr && New != nullptr && "Expected non-null Stmt's");
- 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::SmallPtrSet<const DeclContext *, 8> &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)");
-}
-
-ASTConsumer *clang::CreateModernObjCRewriter(const std::string& InFile,
- raw_ostream* OS,
- DiagnosticsEngine &Diags,
- const LangOptions &LOpts,
- bool SilenceRewriteMacroWarning,
- bool LineInfo) {
- return new 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))
- 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 (llvm::SmallPtrSet<ObjCIvarDecl *, 8>::iterator i = Ivars.begin(),
- e = Ivars.end(); i != e; i++) {
- ObjCIvarDecl *IvarDecl = (*i);
- 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 (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = ImportedBlockDecls.begin(),
- E = ImportedBlockDecls.end(); I != E; ++I) {
- ValueDecl *VD = (*I);
- S += "_Block_object_assign((void*)&dst->";
- S += (*I)->getNameAsString();
- S += ", (void*)src->";
- S += (*I)->getNameAsString();
- if (BlockByRefDeclsPtrSet.count((*I)))
- 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 (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = ImportedBlockDecls.begin(),
- E = ImportedBlockDecls.end(); I != E; ++I) {
- ValueDecl *VD = (*I);
- S += "_Block_object_dispose((void*)src->";
- S += (*I)->getNameAsString();
- if (BlockByRefDeclsPtrSet.count((*I)))
- 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::SmallPtrSet<const DeclContext *, 8> &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);
- 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 (llvm::SmallPtrSet<ObjCProtocolDecl *,8>::iterator I = ProtocolExprDecls.begin(),
- E = ProtocolExprDecls.end(); I != E; ++I) {
- RewriteObjCProtocolMetaData(*I, Preamble);
- Write_ProtocolExprReferencedMetadata(Context, (*I), 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()))
- 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;
-}
diff --git a/lib/Rewrite/Frontend/RewriteObjC.cpp b/lib/Rewrite/Frontend/RewriteObjC.cpp
deleted file mode 100644
index dfeb11a..0000000
--- a/lib/Rewrite/Frontend/RewriteObjC.cpp
+++ /dev/null
@@ -1,5948 +0,0 @@
-//===--- 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>
-
-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) {
- Stmt *ReplacingStmt = ReplacedNodes[Old];
-
- if (ReplacingStmt)
- return; // We can't rewrite the same node twice.
-
- if (DisableReplaceStmt)
- return;
-
- // If replacement succeeded or warning disabled return with no warning.
- if (!Rewrite.ReplaceStmt(Old, New)) {
- ReplacedNodes[Old] = New;
- return;
- }
- if (SilenceRewriteMacroWarning)
- return;
- Diags.Report(Context->getFullLoc(Old->getLocStart()), RewriteFailedDiag)
- << Old->getSourceRange();
- }
-
- void ReplaceStmtWithRange(Stmt *Old, Stmt *New, SourceRange SrcRange) {
- assert(Old != nullptr && New != nullptr && "Expected non-null Stmt's");
- 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);
-
- virtual 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::SmallPtrSet<const DeclContext *, 8> &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() {}
- virtual 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)");
-}
-
-ASTConsumer *clang::CreateObjCRewriter(const std::string& InFile,
- raw_ostream* OS,
- DiagnosticsEngine &Diags,
- const LangOptions &LOpts,
- bool SilenceRewriteMacroWarning) {
- return new 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))
- 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 (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = ImportedBlockDecls.begin(),
- E = ImportedBlockDecls.end(); I != E; ++I) {
- ValueDecl *VD = (*I);
- S += "_Block_object_assign((void*)&dst->";
- S += (*I)->getNameAsString();
- S += ", (void*)src->";
- S += (*I)->getNameAsString();
- if (BlockByRefDeclsPtrSet.count((*I)))
- 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 (llvm::SmallPtrSet<ValueDecl*,8>::iterator I = ImportedBlockDecls.begin(),
- E = ImportedBlockDecls.end(); I != E; ++I) {
- ValueDecl *VD = (*I);
- S += "_Block_object_dispose((void*)src->";
- S += (*I)->getNameAsString();
- if (BlockByRefDeclsPtrSet.count((*I)))
- 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::SmallPtrSet<const DeclContext *, 8> &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 (llvm::SmallPtrSet<ObjCProtocolDecl *,8>::iterator I = ProtocolExprDecls.begin(),
- E = ProtocolExprDecls.end(); I != E; ++I)
- RewriteObjCProtocolMetaData(*I, "", "", 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()))
- 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 (llvm::SmallPtrSet<ObjCProtocolDecl *,8>::iterator I = ProtocolExprDecls.begin(),
- E = ProtocolExprDecls.end(); I != E; ++I) {
- Result += "static struct _objc_protocol *_POINTER_OBJC_PROTOCOL_";
- Result += (*I)->getNameAsString();
- Result += " = &_OBJC_PROTOCOL_";
- Result += (*I)->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;
-}
diff --git a/lib/Rewrite/Frontend/RewriteTest.cpp b/lib/Rewrite/Frontend/RewriteTest.cpp
deleted file mode 100644
index 722c5e8..0000000
--- a/lib/Rewrite/Frontend/RewriteTest.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-//===--- 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/Rewrite/Core/HTMLRewrite.cpp b/lib/Rewrite/HTMLRewrite.cpp
similarity index 100%
rename from lib/Rewrite/Core/HTMLRewrite.cpp
rename to lib/Rewrite/HTMLRewrite.cpp
diff --git a/lib/Rewrite/Makefile b/lib/Rewrite/Makefile
index 0be84d4..5fef9b2 100644
--- a/lib/Rewrite/Makefile
+++ b/lib/Rewrite/Makefile
@@ -1,4 +1,4 @@
-##===- clang/lib/StaticAnalyzer/Makefile -------------------*- Makefile -*-===##
+##===- clang/lib/Rewrite/Makefile --------------------------*- Makefile -*-===##
#
# The LLVM Compiler Infrastructure
#
@@ -6,9 +6,13 @@
# License. See LICENSE.TXT for details.
#
##===----------------------------------------------------------------------===##
+#
+# This implements code transformation / rewriting facilities.
+#
+##===----------------------------------------------------------------------===##
CLANG_LEVEL := ../..
-DIRS := Frontend
-PARALLEL_DIRS := Core
+LIBRARYNAME := clangRewrite
include $(CLANG_LEVEL)/Makefile
+
diff --git a/lib/Rewrite/Core/RewriteRope.cpp b/lib/Rewrite/RewriteRope.cpp
similarity index 98%
rename from lib/Rewrite/Core/RewriteRope.cpp
rename to lib/Rewrite/RewriteRope.cpp
index ef8abfc..1c82ee4 100644
--- a/lib/Rewrite/Core/RewriteRope.cpp
+++ b/lib/Rewrite/RewriteRope.cpp
@@ -788,18 +788,14 @@
// Otherwise, this was a small request but we just don't have space for it
// Make a new chunk and share it with later allocations.
- if (AllocBuffer)
- AllocBuffer->dropRef();
-
unsigned AllocSize = offsetof(RopeRefCountString, Data) + AllocChunkSize;
- AllocBuffer = reinterpret_cast<RopeRefCountString *>(new char[AllocSize]);
- AllocBuffer->RefCount = 0;
- memcpy(AllocBuffer->Data, Start, Len);
+ RopeRefCountString *Res =
+ reinterpret_cast<RopeRefCountString *>(new char[AllocSize]);
+ Res->RefCount = 0;
+ memcpy(Res->Data, Start, Len);
+ AllocBuffer = Res;
AllocOffs = Len;
- // Start out the new allocation with a refcount of 1, since we have an
- // internal reference to it.
- AllocBuffer->addRef();
return RopePiece(AllocBuffer, 0, Len);
}
diff --git a/lib/Rewrite/Core/Rewriter.cpp b/lib/Rewrite/Rewriter.cpp
similarity index 93%
rename from lib/Rewrite/Core/Rewriter.cpp
rename to lib/Rewrite/Rewriter.cpp
index eab4ccf..60cdcf7 100644
--- a/lib/Rewrite/Core/Rewriter.cpp
+++ b/lib/Rewrite/Rewriter.cpp
@@ -13,9 +13,7 @@
//===----------------------------------------------------------------------===//
#include "clang/Rewrite/Core/Rewriter.h"
-#include "clang/AST/Decl.h"
-#include "clang/AST/PrettyPrinter.h"
-#include "clang/AST/Stmt.h"
+#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/DiagnosticIDs.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceManager.h"
@@ -328,35 +326,6 @@
return ReplaceText(start, origLength, MB.substr(newOffs, newLength));
}
-/// ReplaceStmt - This replaces a Stmt/Expr with another, using the pretty
-/// printer to generate the replacement code. This returns true if the input
-/// could not be rewritten, or false if successful.
-bool Rewriter::ReplaceStmt(Stmt *From, Stmt *To) {
- assert(From != nullptr && To != nullptr && "Expected non-null Stmt's");
-
- // Measaure the old text.
- int Size = getRangeSize(From->getSourceRange());
- if (Size == -1)
- return true;
-
- // Get the new text.
- std::string SStr;
- llvm::raw_string_ostream S(SStr);
- To->printPretty(S, nullptr, PrintingPolicy(*LangOpts));
- const std::string &Str = S.str();
-
- ReplaceText(From->getLocStart(), Size, Str);
- return false;
-}
-
-std::string Rewriter::ConvertToString(Stmt *From) {
- assert(From != nullptr && "Expected non-null Stmt");
- std::string SStr;
- llvm::raw_string_ostream S(SStr);
- From->printPretty(S, nullptr, PrintingPolicy(*LangOpts));
- return S.str();
-}
-
bool Rewriter::IncreaseIndentation(CharSourceRange range,
SourceLocation parentIndent) {
if (range.isInvalid()) return true;
diff --git a/lib/Rewrite/Core/TokenRewriter.cpp b/lib/Rewrite/TokenRewriter.cpp
similarity index 100%
rename from lib/Rewrite/Core/TokenRewriter.cpp
rename to lib/Rewrite/TokenRewriter.cpp