| //===- Diagnostic.cpp - C Language Family Diagnostic Handling -------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the Diagnostic-related interfaces. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Basic/Diagnostic.h" |
| #include "clang/Basic/CharInfo.h" |
| #include "clang/Basic/DiagnosticError.h" |
| #include "clang/Basic/DiagnosticIDs.h" |
| #include "clang/Basic/DiagnosticOptions.h" |
| #include "clang/Basic/IdentifierTable.h" |
| #include "clang/Basic/PartialDiagnostic.h" |
| #include "clang/Basic/SourceLocation.h" |
| #include "clang/Basic/SourceManager.h" |
| #include "clang/Basic/Specifiers.h" |
| #include "clang/Basic/TokenKinds.h" |
| #include "llvm/ADT/SmallString.h" |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/Support/CrashRecoveryContext.h" |
| #include "llvm/Support/Locale.h" |
| #include "llvm/Support/raw_ostream.h" |
| #include <algorithm> |
| #include <cassert> |
| #include <cstddef> |
| #include <cstdint> |
| #include <cstring> |
| #include <limits> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| using namespace clang; |
| |
| const DiagnosticBuilder &clang::operator<<(const DiagnosticBuilder &DB, |
| DiagNullabilityKind nullability) { |
| StringRef string; |
| switch (nullability.first) { |
| case NullabilityKind::NonNull: |
| string = nullability.second ? "'nonnull'" : "'_Nonnull'"; |
| break; |
| |
| case NullabilityKind::Nullable: |
| string = nullability.second ? "'nullable'" : "'_Nullable'"; |
| break; |
| |
| case NullabilityKind::Unspecified: |
| string = nullability.second ? "'null_unspecified'" : "'_Null_unspecified'"; |
| break; |
| } |
| |
| DB.AddString(string); |
| return DB; |
| } |
| |
| static void DummyArgToStringFn(DiagnosticsEngine::ArgumentKind AK, intptr_t QT, |
| StringRef Modifier, StringRef Argument, |
| ArrayRef<DiagnosticsEngine::ArgumentValue> PrevArgs, |
| SmallVectorImpl<char> &Output, |
| void *Cookie, |
| ArrayRef<intptr_t> QualTypeVals) { |
| StringRef Str = "<can't format argument>"; |
| Output.append(Str.begin(), Str.end()); |
| } |
| |
| DiagnosticsEngine::DiagnosticsEngine( |
| IntrusiveRefCntPtr<DiagnosticIDs> diags, |
| IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts, DiagnosticConsumer *client, |
| bool ShouldOwnClient) |
| : Diags(std::move(diags)), DiagOpts(std::move(DiagOpts)) { |
| setClient(client, ShouldOwnClient); |
| ArgToStringFn = DummyArgToStringFn; |
| |
| Reset(); |
| } |
| |
| DiagnosticsEngine::~DiagnosticsEngine() { |
| // If we own the diagnostic client, destroy it first so that it can access the |
| // engine from its destructor. |
| setClient(nullptr); |
| } |
| |
| void DiagnosticsEngine::setClient(DiagnosticConsumer *client, |
| bool ShouldOwnClient) { |
| Owner.reset(ShouldOwnClient ? client : nullptr); |
| Client = client; |
| } |
| |
| void DiagnosticsEngine::pushMappings(SourceLocation Loc) { |
| DiagStateOnPushStack.push_back(GetCurDiagState()); |
| } |
| |
| bool DiagnosticsEngine::popMappings(SourceLocation Loc) { |
| if (DiagStateOnPushStack.empty()) |
| return false; |
| |
| if (DiagStateOnPushStack.back() != GetCurDiagState()) { |
| // State changed at some point between push/pop. |
| PushDiagStatePoint(DiagStateOnPushStack.back(), Loc); |
| } |
| DiagStateOnPushStack.pop_back(); |
| return true; |
| } |
| |
| void DiagnosticsEngine::Reset() { |
| ErrorOccurred = false; |
| UncompilableErrorOccurred = false; |
| FatalErrorOccurred = false; |
| UnrecoverableErrorOccurred = false; |
| |
| NumWarnings = 0; |
| NumErrors = 0; |
| TrapNumErrorsOccurred = 0; |
| TrapNumUnrecoverableErrorsOccurred = 0; |
| |
| CurDiagID = std::numeric_limits<unsigned>::max(); |
| LastDiagLevel = DiagnosticIDs::Ignored; |
| DelayedDiagID = 0; |
| |
| // Clear state related to #pragma diagnostic. |
| DiagStates.clear(); |
| DiagStatesByLoc.clear(); |
| DiagStateOnPushStack.clear(); |
| |
| // Create a DiagState and DiagStatePoint representing diagnostic changes |
| // through command-line. |
| DiagStates.emplace_back(); |
| DiagStatesByLoc.appendFirst(&DiagStates.back()); |
| } |
| |
| void DiagnosticsEngine::SetDelayedDiagnostic(unsigned DiagID, StringRef Arg1, |
| StringRef Arg2) { |
| if (DelayedDiagID) |
| return; |
| |
| DelayedDiagID = DiagID; |
| DelayedDiagArg1 = Arg1.str(); |
| DelayedDiagArg2 = Arg2.str(); |
| } |
| |
| void DiagnosticsEngine::ReportDelayed() { |
| unsigned ID = DelayedDiagID; |
| DelayedDiagID = 0; |
| Report(ID) << DelayedDiagArg1 << DelayedDiagArg2; |
| } |
| |
| void DiagnosticsEngine::DiagStateMap::appendFirst(DiagState *State) { |
| assert(Files.empty() && "not first"); |
| FirstDiagState = CurDiagState = State; |
| CurDiagStateLoc = SourceLocation(); |
| } |
| |
| void DiagnosticsEngine::DiagStateMap::append(SourceManager &SrcMgr, |
| SourceLocation Loc, |
| DiagState *State) { |
| CurDiagState = State; |
| CurDiagStateLoc = Loc; |
| |
| std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedLoc(Loc); |
| unsigned Offset = Decomp.second; |
| for (File *F = getFile(SrcMgr, Decomp.first); F; |
| Offset = F->ParentOffset, F = F->Parent) { |
| F->HasLocalTransitions = true; |
| auto &Last = F->StateTransitions.back(); |
| assert(Last.Offset <= Offset && "state transitions added out of order"); |
| |
| if (Last.Offset == Offset) { |
| if (Last.State == State) |
| break; |
| Last.State = State; |
| continue; |
| } |
| |
| F->StateTransitions.push_back({State, Offset}); |
| } |
| } |
| |
| DiagnosticsEngine::DiagState * |
| DiagnosticsEngine::DiagStateMap::lookup(SourceManager &SrcMgr, |
| SourceLocation Loc) const { |
| // Common case: we have not seen any diagnostic pragmas. |
| if (Files.empty()) |
| return FirstDiagState; |
| |
| std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedLoc(Loc); |
| const File *F = getFile(SrcMgr, Decomp.first); |
| return F->lookup(Decomp.second); |
| } |
| |
| DiagnosticsEngine::DiagState * |
| DiagnosticsEngine::DiagStateMap::File::lookup(unsigned Offset) const { |
| auto OnePastIt = std::upper_bound( |
| StateTransitions.begin(), StateTransitions.end(), Offset, |
| [](unsigned Offset, const DiagStatePoint &P) { |
| return Offset < P.Offset; |
| }); |
| assert(OnePastIt != StateTransitions.begin() && "missing initial state"); |
| return OnePastIt[-1].State; |
| } |
| |
| DiagnosticsEngine::DiagStateMap::File * |
| DiagnosticsEngine::DiagStateMap::getFile(SourceManager &SrcMgr, |
| FileID ID) const { |
| // Get or insert the File for this ID. |
| auto Range = Files.equal_range(ID); |
| if (Range.first != Range.second) |
| return &Range.first->second; |
| auto &F = Files.insert(Range.first, std::make_pair(ID, File()))->second; |
| |
| // We created a new File; look up the diagnostic state at the start of it and |
| // initialize it. |
| if (ID.isValid()) { |
| std::pair<FileID, unsigned> Decomp = SrcMgr.getDecomposedIncludedLoc(ID); |
| F.Parent = getFile(SrcMgr, Decomp.first); |
| F.ParentOffset = Decomp.second; |
| F.StateTransitions.push_back({F.Parent->lookup(Decomp.second), 0}); |
| } else { |
| // This is the (imaginary) root file into which we pretend all top-level |
| // files are included; it descends from the initial state. |
| // |
| // FIXME: This doesn't guarantee that we use the same ordering as |
| // isBeforeInTranslationUnit in the cases where someone invented another |
| // top-level file and added diagnostic pragmas to it. See the code at the |
| // end of isBeforeInTranslationUnit for the quirks it deals with. |
| F.StateTransitions.push_back({FirstDiagState, 0}); |
| } |
| return &F; |
| } |
| |
| void DiagnosticsEngine::DiagStateMap::dump(SourceManager &SrcMgr, |
| StringRef DiagName) const { |
| llvm::errs() << "diagnostic state at "; |
| CurDiagStateLoc.print(llvm::errs(), SrcMgr); |
| llvm::errs() << ": " << CurDiagState << "\n"; |
| |
| for (auto &F : Files) { |
| FileID ID = F.first; |
| File &File = F.second; |
| |
| bool PrintedOuterHeading = false; |
| auto PrintOuterHeading = [&] { |
| if (PrintedOuterHeading) return; |
| PrintedOuterHeading = true; |
| |
| llvm::errs() << "File " << &File << " <FileID " << ID.getHashValue() |
| << ">: " << SrcMgr.getBuffer(ID)->getBufferIdentifier(); |
| if (F.second.Parent) { |
| std::pair<FileID, unsigned> Decomp = |
| SrcMgr.getDecomposedIncludedLoc(ID); |
| assert(File.ParentOffset == Decomp.second); |
| llvm::errs() << " parent " << File.Parent << " <FileID " |
| << Decomp.first.getHashValue() << "> "; |
| SrcMgr.getLocForStartOfFile(Decomp.first) |
| .getLocWithOffset(Decomp.second) |
| .print(llvm::errs(), SrcMgr); |
| } |
| if (File.HasLocalTransitions) |
| llvm::errs() << " has_local_transitions"; |
| llvm::errs() << "\n"; |
| }; |
| |
| if (DiagName.empty()) |
| PrintOuterHeading(); |
| |
| for (DiagStatePoint &Transition : File.StateTransitions) { |
| bool PrintedInnerHeading = false; |
| auto PrintInnerHeading = [&] { |
| if (PrintedInnerHeading) return; |
| PrintedInnerHeading = true; |
| |
| PrintOuterHeading(); |
| llvm::errs() << " "; |
| SrcMgr.getLocForStartOfFile(ID) |
| .getLocWithOffset(Transition.Offset) |
| .print(llvm::errs(), SrcMgr); |
| llvm::errs() << ": state " << Transition.State << ":\n"; |
| }; |
| |
| if (DiagName.empty()) |
| PrintInnerHeading(); |
| |
| for (auto &Mapping : *Transition.State) { |
| StringRef Option = |
| DiagnosticIDs::getWarningOptionForDiag(Mapping.first); |
| if (!DiagName.empty() && DiagName != Option) |
| continue; |
| |
| PrintInnerHeading(); |
| llvm::errs() << " "; |
| if (Option.empty()) |
| llvm::errs() << "<unknown " << Mapping.first << ">"; |
| else |
| llvm::errs() << Option; |
| llvm::errs() << ": "; |
| |
| switch (Mapping.second.getSeverity()) { |
| case diag::Severity::Ignored: llvm::errs() << "ignored"; break; |
| case diag::Severity::Remark: llvm::errs() << "remark"; break; |
| case diag::Severity::Warning: llvm::errs() << "warning"; break; |
| case diag::Severity::Error: llvm::errs() << "error"; break; |
| case diag::Severity::Fatal: llvm::errs() << "fatal"; break; |
| } |
| |
| if (!Mapping.second.isUser()) |
| llvm::errs() << " default"; |
| if (Mapping.second.isPragma()) |
| llvm::errs() << " pragma"; |
| if (Mapping.second.hasNoWarningAsError()) |
| llvm::errs() << " no-error"; |
| if (Mapping.second.hasNoErrorAsFatal()) |
| llvm::errs() << " no-fatal"; |
| if (Mapping.second.wasUpgradedFromWarning()) |
| llvm::errs() << " overruled"; |
| llvm::errs() << "\n"; |
| } |
| } |
| } |
| } |
| |
| void DiagnosticsEngine::PushDiagStatePoint(DiagState *State, |
| SourceLocation Loc) { |
| assert(Loc.isValid() && "Adding invalid loc point"); |
| DiagStatesByLoc.append(*SourceMgr, Loc, State); |
| } |
| |
| void DiagnosticsEngine::setSeverity(diag::kind Diag, diag::Severity Map, |
| SourceLocation L) { |
| assert(Diag < diag::DIAG_UPPER_LIMIT && |
| "Can only map builtin diagnostics"); |
| assert((Diags->isBuiltinWarningOrExtension(Diag) || |
| (Map == diag::Severity::Fatal || Map == diag::Severity::Error)) && |
| "Cannot map errors into warnings!"); |
| assert((L.isInvalid() || SourceMgr) && "No SourceMgr for valid location"); |
| |
| // Don't allow a mapping to a warning override an error/fatal mapping. |
| bool WasUpgradedFromWarning = false; |
| if (Map == diag::Severity::Warning) { |
| DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag); |
| if (Info.getSeverity() == diag::Severity::Error || |
| Info.getSeverity() == diag::Severity::Fatal) { |
| Map = Info.getSeverity(); |
| WasUpgradedFromWarning = true; |
| } |
| } |
| DiagnosticMapping Mapping = makeUserMapping(Map, L); |
| Mapping.setUpgradedFromWarning(WasUpgradedFromWarning); |
| |
| // Common case; setting all the diagnostics of a group in one place. |
| if ((L.isInvalid() || L == DiagStatesByLoc.getCurDiagStateLoc()) && |
| DiagStatesByLoc.getCurDiagState()) { |
| // FIXME: This is theoretically wrong: if the current state is shared with |
| // some other location (via push/pop) we will change the state for that |
| // other location as well. This cannot currently happen, as we can't update |
| // the diagnostic state at the same location at which we pop. |
| DiagStatesByLoc.getCurDiagState()->setMapping(Diag, Mapping); |
| return; |
| } |
| |
| // A diagnostic pragma occurred, create a new DiagState initialized with |
| // the current one and a new DiagStatePoint to record at which location |
| // the new state became active. |
| DiagStates.push_back(*GetCurDiagState()); |
| DiagStates.back().setMapping(Diag, Mapping); |
| PushDiagStatePoint(&DiagStates.back(), L); |
| } |
| |
| bool DiagnosticsEngine::setSeverityForGroup(diag::Flavor Flavor, |
| StringRef Group, diag::Severity Map, |
| SourceLocation Loc) { |
| // Get the diagnostics in this group. |
| SmallVector<diag::kind, 256> GroupDiags; |
| if (Diags->getDiagnosticsInGroup(Flavor, Group, GroupDiags)) |
| return true; |
| |
| // Set the mapping. |
| for (diag::kind Diag : GroupDiags) |
| setSeverity(Diag, Map, Loc); |
| |
| return false; |
| } |
| |
| bool DiagnosticsEngine::setDiagnosticGroupWarningAsError(StringRef Group, |
| bool Enabled) { |
| // If we are enabling this feature, just set the diagnostic mappings to map to |
| // errors. |
| if (Enabled) |
| return setSeverityForGroup(diag::Flavor::WarningOrError, Group, |
| diag::Severity::Error); |
| |
| // Otherwise, we want to set the diagnostic mapping's "no Werror" bit, and |
| // potentially downgrade anything already mapped to be a warning. |
| |
| // Get the diagnostics in this group. |
| SmallVector<diag::kind, 8> GroupDiags; |
| if (Diags->getDiagnosticsInGroup(diag::Flavor::WarningOrError, Group, |
| GroupDiags)) |
| return true; |
| |
| // Perform the mapping change. |
| for (diag::kind Diag : GroupDiags) { |
| DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag); |
| |
| if (Info.getSeverity() == diag::Severity::Error || |
| Info.getSeverity() == diag::Severity::Fatal) |
| Info.setSeverity(diag::Severity::Warning); |
| |
| Info.setNoWarningAsError(true); |
| } |
| |
| return false; |
| } |
| |
| bool DiagnosticsEngine::setDiagnosticGroupErrorAsFatal(StringRef Group, |
| bool Enabled) { |
| // If we are enabling this feature, just set the diagnostic mappings to map to |
| // fatal errors. |
| if (Enabled) |
| return setSeverityForGroup(diag::Flavor::WarningOrError, Group, |
| diag::Severity::Fatal); |
| |
| // Otherwise, we want to set the diagnostic mapping's "no Wfatal-errors" bit, |
| // and potentially downgrade anything already mapped to be a fatal error. |
| |
| // Get the diagnostics in this group. |
| SmallVector<diag::kind, 8> GroupDiags; |
| if (Diags->getDiagnosticsInGroup(diag::Flavor::WarningOrError, Group, |
| GroupDiags)) |
| return true; |
| |
| // Perform the mapping change. |
| for (diag::kind Diag : GroupDiags) { |
| DiagnosticMapping &Info = GetCurDiagState()->getOrAddMapping(Diag); |
| |
| if (Info.getSeverity() == diag::Severity::Fatal) |
| Info.setSeverity(diag::Severity::Error); |
| |
| Info.setNoErrorAsFatal(true); |
| } |
| |
| return false; |
| } |
| |
| void DiagnosticsEngine::setSeverityForAll(diag::Flavor Flavor, |
| diag::Severity Map, |
| SourceLocation Loc) { |
| // Get all the diagnostics. |
| std::vector<diag::kind> AllDiags; |
| DiagnosticIDs::getAllDiagnostics(Flavor, AllDiags); |
| |
| // Set the mapping. |
| for (diag::kind Diag : AllDiags) |
| if (Diags->isBuiltinWarningOrExtension(Diag)) |
| setSeverity(Diag, Map, Loc); |
| } |
| |
| void DiagnosticsEngine::Report(const StoredDiagnostic &storedDiag) { |
| assert(CurDiagID == std::numeric_limits<unsigned>::max() && |
| "Multiple diagnostics in flight at once!"); |
| |
| CurDiagLoc = storedDiag.getLocation(); |
| CurDiagID = storedDiag.getID(); |
| NumDiagArgs = 0; |
| |
| DiagRanges.clear(); |
| DiagRanges.append(storedDiag.range_begin(), storedDiag.range_end()); |
| |
| DiagFixItHints.clear(); |
| DiagFixItHints.append(storedDiag.fixit_begin(), storedDiag.fixit_end()); |
| |
| assert(Client && "DiagnosticConsumer not set!"); |
| Level DiagLevel = storedDiag.getLevel(); |
| Diagnostic Info(this, storedDiag.getMessage()); |
| Client->HandleDiagnostic(DiagLevel, Info); |
| if (Client->IncludeInDiagnosticCounts()) { |
| if (DiagLevel == DiagnosticsEngine::Warning) |
| ++NumWarnings; |
| } |
| |
| CurDiagID = std::numeric_limits<unsigned>::max(); |
| } |
| |
| bool DiagnosticsEngine::EmitCurrentDiagnostic(bool Force) { |
| assert(getClient() && "DiagnosticClient not set!"); |
| |
| bool Emitted; |
| if (Force) { |
| Diagnostic Info(this); |
| |
| // Figure out the diagnostic level of this message. |
| DiagnosticIDs::Level DiagLevel |
| = Diags->getDiagnosticLevel(Info.getID(), Info.getLocation(), *this); |
| |
| Emitted = (DiagLevel != DiagnosticIDs::Ignored); |
| if (Emitted) { |
| // Emit the diagnostic regardless of suppression level. |
| Diags->EmitDiag(*this, DiagLevel); |
| } |
| } else { |
| // Process the diagnostic, sending the accumulated information to the |
| // DiagnosticConsumer. |
| Emitted = ProcessDiag(); |
| } |
| |
| // Clear out the current diagnostic object. |
| Clear(); |
| |
| // If there was a delayed diagnostic, emit it now. |
| if (!Force && DelayedDiagID) |
| ReportDelayed(); |
| |
| return Emitted; |
| } |
| |
| DiagnosticConsumer::~DiagnosticConsumer() = default; |
| |
| void DiagnosticConsumer::HandleDiagnostic(DiagnosticsEngine::Level DiagLevel, |
| const Diagnostic &Info) { |
| if (!IncludeInDiagnosticCounts()) |
| return; |
| |
| if (DiagLevel == DiagnosticsEngine::Warning) |
| ++NumWarnings; |
| else if (DiagLevel >= DiagnosticsEngine::Error) |
| ++NumErrors; |
| } |
| |
| /// ModifierIs - Return true if the specified modifier matches specified string. |
| template <std::size_t StrLen> |
| static bool ModifierIs(const char *Modifier, unsigned ModifierLen, |
| const char (&Str)[StrLen]) { |
| return StrLen-1 == ModifierLen && memcmp(Modifier, Str, StrLen-1) == 0; |
| } |
| |
| /// ScanForward - Scans forward, looking for the given character, skipping |
| /// nested clauses and escaped characters. |
| static const char *ScanFormat(const char *I, const char *E, char Target) { |
| unsigned Depth = 0; |
| |
| for ( ; I != E; ++I) { |
| if (Depth == 0 && *I == Target) return I; |
| if (Depth != 0 && *I == '}') Depth--; |
| |
| if (*I == '%') { |
| I++; |
| if (I == E) break; |
| |
| // Escaped characters get implicitly skipped here. |
| |
| // Format specifier. |
| if (!isDigit(*I) && !isPunctuation(*I)) { |
| for (I++; I != E && !isDigit(*I) && *I != '{'; I++) ; |
| if (I == E) break; |
| if (*I == '{') |
| Depth++; |
| } |
| } |
| } |
| return E; |
| } |
| |
| /// HandleSelectModifier - Handle the integer 'select' modifier. This is used |
| /// like this: %select{foo|bar|baz}2. This means that the integer argument |
| /// "%2" has a value from 0-2. If the value is 0, the diagnostic prints 'foo'. |
| /// If the value is 1, it prints 'bar'. If it has the value 2, it prints 'baz'. |
| /// This is very useful for certain classes of variant diagnostics. |
| static void HandleSelectModifier(const Diagnostic &DInfo, unsigned ValNo, |
| const char *Argument, unsigned ArgumentLen, |
| SmallVectorImpl<char> &OutStr) { |
| const char *ArgumentEnd = Argument+ArgumentLen; |
| |
| // Skip over 'ValNo' |'s. |
| while (ValNo) { |
| const char *NextVal = ScanFormat(Argument, ArgumentEnd, '|'); |
| assert(NextVal != ArgumentEnd && "Value for integer select modifier was" |
| " larger than the number of options in the diagnostic string!"); |
| Argument = NextVal+1; // Skip this string. |
| --ValNo; |
| } |
| |
| // Get the end of the value. This is either the } or the |. |
| const char *EndPtr = ScanFormat(Argument, ArgumentEnd, '|'); |
| |
| // Recursively format the result of the select clause into the output string. |
| DInfo.FormatDiagnostic(Argument, EndPtr, OutStr); |
| } |
| |
| /// HandleIntegerSModifier - Handle the integer 's' modifier. This adds the |
| /// letter 's' to the string if the value is not 1. This is used in cases like |
| /// this: "you idiot, you have %4 parameter%s4!". |
| static void HandleIntegerSModifier(unsigned ValNo, |
| SmallVectorImpl<char> &OutStr) { |
| if (ValNo != 1) |
| OutStr.push_back('s'); |
| } |
| |
| /// HandleOrdinalModifier - Handle the integer 'ord' modifier. This |
| /// prints the ordinal form of the given integer, with 1 corresponding |
| /// to the first ordinal. Currently this is hard-coded to use the |
| /// English form. |
| static void HandleOrdinalModifier(unsigned ValNo, |
| SmallVectorImpl<char> &OutStr) { |
| assert(ValNo != 0 && "ValNo must be strictly positive!"); |
| |
| llvm::raw_svector_ostream Out(OutStr); |
| |
| // We could use text forms for the first N ordinals, but the numeric |
| // forms are actually nicer in diagnostics because they stand out. |
| Out << ValNo << llvm::getOrdinalSuffix(ValNo); |
| } |
| |
| /// PluralNumber - Parse an unsigned integer and advance Start. |
| static unsigned PluralNumber(const char *&Start, const char *End) { |
| // Programming 101: Parse a decimal number :-) |
| unsigned Val = 0; |
| while (Start != End && *Start >= '0' && *Start <= '9') { |
| Val *= 10; |
| Val += *Start - '0'; |
| ++Start; |
| } |
| return Val; |
| } |
| |
| /// TestPluralRange - Test if Val is in the parsed range. Modifies Start. |
| static bool TestPluralRange(unsigned Val, const char *&Start, const char *End) { |
| if (*Start != '[') { |
| unsigned Ref = PluralNumber(Start, End); |
| return Ref == Val; |
| } |
| |
| ++Start; |
| unsigned Low = PluralNumber(Start, End); |
| assert(*Start == ',' && "Bad plural expression syntax: expected ,"); |
| ++Start; |
| unsigned High = PluralNumber(Start, End); |
| assert(*Start == ']' && "Bad plural expression syntax: expected )"); |
| ++Start; |
| return Low <= Val && Val <= High; |
| } |
| |
| /// EvalPluralExpr - Actual expression evaluator for HandlePluralModifier. |
| static bool EvalPluralExpr(unsigned ValNo, const char *Start, const char *End) { |
| // Empty condition? |
| if (*Start == ':') |
| return true; |
| |
| while (true) { |
| char C = *Start; |
| if (C == '%') { |
| // Modulo expression |
| ++Start; |
| unsigned Arg = PluralNumber(Start, End); |
| assert(*Start == '=' && "Bad plural expression syntax: expected ="); |
| ++Start; |
| unsigned ValMod = ValNo % Arg; |
| if (TestPluralRange(ValMod, Start, End)) |
| return true; |
| } else { |
| assert((C == '[' || (C >= '0' && C <= '9')) && |
| "Bad plural expression syntax: unexpected character"); |
| // Range expression |
| if (TestPluralRange(ValNo, Start, End)) |
| return true; |
| } |
| |
| // Scan for next or-expr part. |
| Start = std::find(Start, End, ','); |
| if (Start == End) |
| break; |
| ++Start; |
| } |
| return false; |
| } |
| |
| /// HandlePluralModifier - Handle the integer 'plural' modifier. This is used |
| /// for complex plural forms, or in languages where all plurals are complex. |
| /// The syntax is: %plural{cond1:form1|cond2:form2|:form3}, where condn are |
| /// conditions that are tested in order, the form corresponding to the first |
| /// that applies being emitted. The empty condition is always true, making the |
| /// last form a default case. |
| /// Conditions are simple boolean expressions, where n is the number argument. |
| /// Here are the rules. |
| /// condition := expression | empty |
| /// empty := -> always true |
| /// expression := numeric [',' expression] -> logical or |
| /// numeric := range -> true if n in range |
| /// | '%' number '=' range -> true if n % number in range |
| /// range := number |
| /// | '[' number ',' number ']' -> ranges are inclusive both ends |
| /// |
| /// Here are some examples from the GNU gettext manual written in this form: |
| /// English: |
| /// {1:form0|:form1} |
| /// Latvian: |
| /// {0:form2|%100=11,%10=0,%10=[2,9]:form1|:form0} |
| /// Gaeilge: |
| /// {1:form0|2:form1|:form2} |
| /// Romanian: |
| /// {1:form0|0,%100=[1,19]:form1|:form2} |
| /// Lithuanian: |
| /// {%10=0,%100=[10,19]:form2|%10=1:form0|:form1} |
| /// Russian (requires repeated form): |
| /// {%100=[11,14]:form2|%10=1:form0|%10=[2,4]:form1|:form2} |
| /// Slovak |
| /// {1:form0|[2,4]:form1|:form2} |
| /// Polish (requires repeated form): |
| /// {1:form0|%100=[10,20]:form2|%10=[2,4]:form1|:form2} |
| static void HandlePluralModifier(const Diagnostic &DInfo, unsigned ValNo, |
| const char *Argument, unsigned ArgumentLen, |
| SmallVectorImpl<char> &OutStr) { |
| const char *ArgumentEnd = Argument + ArgumentLen; |
| while (true) { |
| assert(Argument < ArgumentEnd && "Plural expression didn't match."); |
| const char *ExprEnd = Argument; |
| while (*ExprEnd != ':') { |
| assert(ExprEnd != ArgumentEnd && "Plural missing expression end"); |
| ++ExprEnd; |
| } |
| if (EvalPluralExpr(ValNo, Argument, ExprEnd)) { |
| Argument = ExprEnd + 1; |
| ExprEnd = ScanFormat(Argument, ArgumentEnd, '|'); |
| |
| // Recursively format the result of the plural clause into the |
| // output string. |
| DInfo.FormatDiagnostic(Argument, ExprEnd, OutStr); |
| return; |
| } |
| Argument = ScanFormat(Argument, ArgumentEnd - 1, '|') + 1; |
| } |
| } |
| |
| /// Returns the friendly description for a token kind that will appear |
| /// without quotes in diagnostic messages. These strings may be translatable in |
| /// future. |
| static const char *getTokenDescForDiagnostic(tok::TokenKind Kind) { |
| switch (Kind) { |
| case tok::identifier: |
| return "identifier"; |
| default: |
| return nullptr; |
| } |
| } |
| |
| /// FormatDiagnostic - Format this diagnostic into a string, substituting the |
| /// formal arguments into the %0 slots. The result is appended onto the Str |
| /// array. |
| void Diagnostic:: |
| FormatDiagnostic(SmallVectorImpl<char> &OutStr) const { |
| if (!StoredDiagMessage.empty()) { |
| OutStr.append(StoredDiagMessage.begin(), StoredDiagMessage.end()); |
| return; |
| } |
| |
| StringRef Diag = |
| getDiags()->getDiagnosticIDs()->getDescription(getID()); |
| |
| FormatDiagnostic(Diag.begin(), Diag.end(), OutStr); |
| } |
| |
| void Diagnostic:: |
| FormatDiagnostic(const char *DiagStr, const char *DiagEnd, |
| SmallVectorImpl<char> &OutStr) const { |
| // When the diagnostic string is only "%0", the entire string is being given |
| // by an outside source. Remove unprintable characters from this string |
| // and skip all the other string processing. |
| if (DiagEnd - DiagStr == 2 && |
| StringRef(DiagStr, DiagEnd - DiagStr).equals("%0") && |
| getArgKind(0) == DiagnosticsEngine::ak_std_string) { |
| const std::string &S = getArgStdStr(0); |
| for (char c : S) { |
| if (llvm::sys::locale::isPrint(c) || c == '\t') { |
| OutStr.push_back(c); |
| } |
| } |
| return; |
| } |
| |
| /// FormattedArgs - Keep track of all of the arguments formatted by |
| /// ConvertArgToString and pass them into subsequent calls to |
| /// ConvertArgToString, allowing the implementation to avoid redundancies in |
| /// obvious cases. |
| SmallVector<DiagnosticsEngine::ArgumentValue, 8> FormattedArgs; |
| |
| /// QualTypeVals - Pass a vector of arrays so that QualType names can be |
| /// compared to see if more information is needed to be printed. |
| SmallVector<intptr_t, 2> QualTypeVals; |
| SmallVector<char, 64> Tree; |
| |
| for (unsigned i = 0, e = getNumArgs(); i < e; ++i) |
| if (getArgKind(i) == DiagnosticsEngine::ak_qualtype) |
| QualTypeVals.push_back(getRawArg(i)); |
| |
| while (DiagStr != DiagEnd) { |
| if (DiagStr[0] != '%') { |
| // Append non-%0 substrings to Str if we have one. |
| const char *StrEnd = std::find(DiagStr, DiagEnd, '%'); |
| OutStr.append(DiagStr, StrEnd); |
| DiagStr = StrEnd; |
| continue; |
| } else if (isPunctuation(DiagStr[1])) { |
| OutStr.push_back(DiagStr[1]); // %% -> %. |
| DiagStr += 2; |
| continue; |
| } |
| |
| // Skip the %. |
| ++DiagStr; |
| |
| // This must be a placeholder for a diagnostic argument. The format for a |
| // placeholder is one of "%0", "%modifier0", or "%modifier{arguments}0". |
| // The digit is a number from 0-9 indicating which argument this comes from. |
| // The modifier is a string of digits from the set [-a-z]+, arguments is a |
| // brace enclosed string. |
| const char *Modifier = nullptr, *Argument = nullptr; |
| unsigned ModifierLen = 0, ArgumentLen = 0; |
| |
| // Check to see if we have a modifier. If so eat it. |
| if (!isDigit(DiagStr[0])) { |
| Modifier = DiagStr; |
| while (DiagStr[0] == '-' || |
| (DiagStr[0] >= 'a' && DiagStr[0] <= 'z')) |
| ++DiagStr; |
| ModifierLen = DiagStr-Modifier; |
| |
| // If we have an argument, get it next. |
| if (DiagStr[0] == '{') { |
| ++DiagStr; // Skip {. |
| Argument = DiagStr; |
| |
| DiagStr = ScanFormat(DiagStr, DiagEnd, '}'); |
| assert(DiagStr != DiagEnd && "Mismatched {}'s in diagnostic string!"); |
| ArgumentLen = DiagStr-Argument; |
| ++DiagStr; // Skip }. |
| } |
| } |
| |
| assert(isDigit(*DiagStr) && "Invalid format for argument in diagnostic"); |
| unsigned ArgNo = *DiagStr++ - '0'; |
| |
| // Only used for type diffing. |
| unsigned ArgNo2 = ArgNo; |
| |
| DiagnosticsEngine::ArgumentKind Kind = getArgKind(ArgNo); |
| if (ModifierIs(Modifier, ModifierLen, "diff")) { |
| assert(*DiagStr == ',' && isDigit(*(DiagStr + 1)) && |
| "Invalid format for diff modifier"); |
| ++DiagStr; // Comma. |
| ArgNo2 = *DiagStr++ - '0'; |
| DiagnosticsEngine::ArgumentKind Kind2 = getArgKind(ArgNo2); |
| if (Kind == DiagnosticsEngine::ak_qualtype && |
| Kind2 == DiagnosticsEngine::ak_qualtype) |
| Kind = DiagnosticsEngine::ak_qualtype_pair; |
| else { |
| // %diff only supports QualTypes. For other kinds of arguments, |
| // use the default printing. For example, if the modifier is: |
| // "%diff{compare $ to $|other text}1,2" |
| // treat it as: |
| // "compare %1 to %2" |
| const char *ArgumentEnd = Argument + ArgumentLen; |
| const char *Pipe = ScanFormat(Argument, ArgumentEnd, '|'); |
| assert(ScanFormat(Pipe + 1, ArgumentEnd, '|') == ArgumentEnd && |
| "Found too many '|'s in a %diff modifier!"); |
| const char *FirstDollar = ScanFormat(Argument, Pipe, '$'); |
| const char *SecondDollar = ScanFormat(FirstDollar + 1, Pipe, '$'); |
| const char ArgStr1[] = { '%', static_cast<char>('0' + ArgNo) }; |
| const char ArgStr2[] = { '%', static_cast<char>('0' + ArgNo2) }; |
| FormatDiagnostic(Argument, FirstDollar, OutStr); |
| FormatDiagnostic(ArgStr1, ArgStr1 + 2, OutStr); |
| FormatDiagnostic(FirstDollar + 1, SecondDollar, OutStr); |
| FormatDiagnostic(ArgStr2, ArgStr2 + 2, OutStr); |
| FormatDiagnostic(SecondDollar + 1, Pipe, OutStr); |
| continue; |
| } |
| } |
| |
| switch (Kind) { |
| // ---- STRINGS ---- |
| case DiagnosticsEngine::ak_std_string: { |
| const std::string &S = getArgStdStr(ArgNo); |
| assert(ModifierLen == 0 && "No modifiers for strings yet"); |
| OutStr.append(S.begin(), S.end()); |
| break; |
| } |
| case DiagnosticsEngine::ak_c_string: { |
| const char *S = getArgCStr(ArgNo); |
| assert(ModifierLen == 0 && "No modifiers for strings yet"); |
| |
| // Don't crash if get passed a null pointer by accident. |
| if (!S) |
| S = "(null)"; |
| |
| OutStr.append(S, S + strlen(S)); |
| break; |
| } |
| // ---- INTEGERS ---- |
| case DiagnosticsEngine::ak_sint: { |
| int Val = getArgSInt(ArgNo); |
| |
| if (ModifierIs(Modifier, ModifierLen, "select")) { |
| HandleSelectModifier(*this, (unsigned)Val, Argument, ArgumentLen, |
| OutStr); |
| } else if (ModifierIs(Modifier, ModifierLen, "s")) { |
| HandleIntegerSModifier(Val, OutStr); |
| } else if (ModifierIs(Modifier, ModifierLen, "plural")) { |
| HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen, |
| OutStr); |
| } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) { |
| HandleOrdinalModifier((unsigned)Val, OutStr); |
| } else { |
| assert(ModifierLen == 0 && "Unknown integer modifier"); |
| llvm::raw_svector_ostream(OutStr) << Val; |
| } |
| break; |
| } |
| case DiagnosticsEngine::ak_uint: { |
| unsigned Val = getArgUInt(ArgNo); |
| |
| if (ModifierIs(Modifier, ModifierLen, "select")) { |
| HandleSelectModifier(*this, Val, Argument, ArgumentLen, OutStr); |
| } else if (ModifierIs(Modifier, ModifierLen, "s")) { |
| HandleIntegerSModifier(Val, OutStr); |
| } else if (ModifierIs(Modifier, ModifierLen, "plural")) { |
| HandlePluralModifier(*this, (unsigned)Val, Argument, ArgumentLen, |
| OutStr); |
| } else if (ModifierIs(Modifier, ModifierLen, "ordinal")) { |
| HandleOrdinalModifier(Val, OutStr); |
| } else { |
| assert(ModifierLen == 0 && "Unknown integer modifier"); |
| llvm::raw_svector_ostream(OutStr) << Val; |
| } |
| break; |
| } |
| // ---- TOKEN SPELLINGS ---- |
| case DiagnosticsEngine::ak_tokenkind: { |
| tok::TokenKind Kind = static_cast<tok::TokenKind>(getRawArg(ArgNo)); |
| assert(ModifierLen == 0 && "No modifiers for token kinds yet"); |
| |
| llvm::raw_svector_ostream Out(OutStr); |
| if (const char *S = tok::getPunctuatorSpelling(Kind)) |
| // Quoted token spelling for punctuators. |
| Out << '\'' << S << '\''; |
| else if (const char *S = tok::getKeywordSpelling(Kind)) |
| // Unquoted token spelling for keywords. |
| Out << S; |
| else if (const char *S = getTokenDescForDiagnostic(Kind)) |
| // Unquoted translatable token name. |
| Out << S; |
| else if (const char *S = tok::getTokenName(Kind)) |
| // Debug name, shouldn't appear in user-facing diagnostics. |
| Out << '<' << S << '>'; |
| else |
| Out << "(null)"; |
| break; |
| } |
| // ---- NAMES and TYPES ---- |
| case DiagnosticsEngine::ak_identifierinfo: { |
| const IdentifierInfo *II = getArgIdentifier(ArgNo); |
| assert(ModifierLen == 0 && "No modifiers for strings yet"); |
| |
| // Don't crash if get passed a null pointer by accident. |
| if (!II) { |
| const char *S = "(null)"; |
| OutStr.append(S, S + strlen(S)); |
| continue; |
| } |
| |
| llvm::raw_svector_ostream(OutStr) << '\'' << II->getName() << '\''; |
| break; |
| } |
| case DiagnosticsEngine::ak_qualtype: |
| case DiagnosticsEngine::ak_declarationname: |
| case DiagnosticsEngine::ak_nameddecl: |
| case DiagnosticsEngine::ak_nestednamespec: |
| case DiagnosticsEngine::ak_declcontext: |
| case DiagnosticsEngine::ak_attr: |
| getDiags()->ConvertArgToString(Kind, getRawArg(ArgNo), |
| StringRef(Modifier, ModifierLen), |
| StringRef(Argument, ArgumentLen), |
| FormattedArgs, |
| OutStr, QualTypeVals); |
| break; |
| case DiagnosticsEngine::ak_qualtype_pair: { |
| // Create a struct with all the info needed for printing. |
| TemplateDiffTypes TDT; |
| TDT.FromType = getRawArg(ArgNo); |
| TDT.ToType = getRawArg(ArgNo2); |
| TDT.ElideType = getDiags()->ElideType; |
| TDT.ShowColors = getDiags()->ShowColors; |
| TDT.TemplateDiffUsed = false; |
| intptr_t val = reinterpret_cast<intptr_t>(&TDT); |
| |
| const char *ArgumentEnd = Argument + ArgumentLen; |
| const char *Pipe = ScanFormat(Argument, ArgumentEnd, '|'); |
| |
| // Print the tree. If this diagnostic already has a tree, skip the |
| // second tree. |
| if (getDiags()->PrintTemplateTree && Tree.empty()) { |
| TDT.PrintFromType = true; |
| TDT.PrintTree = true; |
| getDiags()->ConvertArgToString(Kind, val, |
| StringRef(Modifier, ModifierLen), |
| StringRef(Argument, ArgumentLen), |
| FormattedArgs, |
| Tree, QualTypeVals); |
| // If there is no tree information, fall back to regular printing. |
| if (!Tree.empty()) { |
| FormatDiagnostic(Pipe + 1, ArgumentEnd, OutStr); |
| break; |
| } |
| } |
| |
| // Non-tree printing, also the fall-back when tree printing fails. |
| // The fall-back is triggered when the types compared are not templates. |
| const char *FirstDollar = ScanFormat(Argument, ArgumentEnd, '$'); |
| const char *SecondDollar = ScanFormat(FirstDollar + 1, ArgumentEnd, '$'); |
| |
| // Append before text |
| FormatDiagnostic(Argument, FirstDollar, OutStr); |
| |
| // Append first type |
| TDT.PrintTree = false; |
| TDT.PrintFromType = true; |
| getDiags()->ConvertArgToString(Kind, val, |
| StringRef(Modifier, ModifierLen), |
| StringRef(Argument, ArgumentLen), |
| FormattedArgs, |
| OutStr, QualTypeVals); |
| if (!TDT.TemplateDiffUsed) |
| FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_qualtype, |
| TDT.FromType)); |
| |
| // Append middle text |
| FormatDiagnostic(FirstDollar + 1, SecondDollar, OutStr); |
| |
| // Append second type |
| TDT.PrintFromType = false; |
| getDiags()->ConvertArgToString(Kind, val, |
| StringRef(Modifier, ModifierLen), |
| StringRef(Argument, ArgumentLen), |
| FormattedArgs, |
| OutStr, QualTypeVals); |
| if (!TDT.TemplateDiffUsed) |
| FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_qualtype, |
| TDT.ToType)); |
| |
| // Append end text |
| FormatDiagnostic(SecondDollar + 1, Pipe, OutStr); |
| break; |
| } |
| } |
| |
| // Remember this argument info for subsequent formatting operations. Turn |
| // std::strings into a null terminated string to make it be the same case as |
| // all the other ones. |
| if (Kind == DiagnosticsEngine::ak_qualtype_pair) |
| continue; |
| else if (Kind != DiagnosticsEngine::ak_std_string) |
| FormattedArgs.push_back(std::make_pair(Kind, getRawArg(ArgNo))); |
| else |
| FormattedArgs.push_back(std::make_pair(DiagnosticsEngine::ak_c_string, |
| (intptr_t)getArgStdStr(ArgNo).c_str())); |
| } |
| |
| // Append the type tree to the end of the diagnostics. |
| OutStr.append(Tree.begin(), Tree.end()); |
| } |
| |
| StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID, |
| StringRef Message) |
| : ID(ID), Level(Level), Message(Message) {} |
| |
| StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, |
| const Diagnostic &Info) |
| : ID(Info.getID()), Level(Level) { |
| assert((Info.getLocation().isInvalid() || Info.hasSourceManager()) && |
| "Valid source location without setting a source manager for diagnostic"); |
| if (Info.getLocation().isValid()) |
| Loc = FullSourceLoc(Info.getLocation(), Info.getSourceManager()); |
| SmallString<64> Message; |
| Info.FormatDiagnostic(Message); |
| this->Message.assign(Message.begin(), Message.end()); |
| this->Ranges.assign(Info.getRanges().begin(), Info.getRanges().end()); |
| this->FixIts.assign(Info.getFixItHints().begin(), Info.getFixItHints().end()); |
| } |
| |
| StoredDiagnostic::StoredDiagnostic(DiagnosticsEngine::Level Level, unsigned ID, |
| StringRef Message, FullSourceLoc Loc, |
| ArrayRef<CharSourceRange> Ranges, |
| ArrayRef<FixItHint> FixIts) |
| : ID(ID), Level(Level), Loc(Loc), Message(Message), |
| Ranges(Ranges.begin(), Ranges.end()), FixIts(FixIts.begin(), FixIts.end()) |
| { |
| } |
| |
| /// IncludeInDiagnosticCounts - This method (whose default implementation |
| /// returns true) indicates whether the diagnostics handled by this |
| /// DiagnosticConsumer should be included in the number of diagnostics |
| /// reported by DiagnosticsEngine. |
| bool DiagnosticConsumer::IncludeInDiagnosticCounts() const { return true; } |
| |
| void IgnoringDiagConsumer::anchor() {} |
| |
| ForwardingDiagnosticConsumer::~ForwardingDiagnosticConsumer() = default; |
| |
| void ForwardingDiagnosticConsumer::HandleDiagnostic( |
| DiagnosticsEngine::Level DiagLevel, |
| const Diagnostic &Info) { |
| Target.HandleDiagnostic(DiagLevel, Info); |
| } |
| |
| void ForwardingDiagnosticConsumer::clear() { |
| DiagnosticConsumer::clear(); |
| Target.clear(); |
| } |
| |
| bool ForwardingDiagnosticConsumer::IncludeInDiagnosticCounts() const { |
| return Target.IncludeInDiagnosticCounts(); |
| } |
| |
| PartialDiagnostic::StorageAllocator::StorageAllocator() { |
| for (unsigned I = 0; I != NumCached; ++I) |
| FreeList[I] = Cached + I; |
| NumFreeListEntries = NumCached; |
| } |
| |
| PartialDiagnostic::StorageAllocator::~StorageAllocator() { |
| // Don't assert if we are in a CrashRecovery context, as this invariant may |
| // be invalidated during a crash. |
| assert((NumFreeListEntries == NumCached || |
| llvm::CrashRecoveryContext::isRecoveringFromCrash()) && |
| "A partial is on the lam"); |
| } |
| |
| char DiagnosticError::ID; |