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llvm-project/clang/tools/libclang/Indexing.cpp

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//===- CIndexHigh.cpp - Higher level API functions ------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "IndexingContext.h"
#include "CIndexDiagnostic.h"
#include "CIndexer.h"
#include "CLog.h"
#include "CXCursor.h"
#include "CXSourceLocation.h"
#include "CXString.h"
#include "CXTranslationUnit.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/DeclVisitor.h"
#include "clang/Frontend/ASTUnit.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/CompilerInvocation.h"
#include "clang/Frontend/FrontendAction.h"
#include "clang/Frontend/Utils.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Lex/PPCallbacks.h"
#include "clang/Lex/PPConditionalDirectiveRecord.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Sema/SemaConsumer.h"
#include "llvm/Support/CrashRecoveryContext.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Mutex.h"
#include "llvm/Support/MutexGuard.h"
#include <cstdio>
using namespace clang;
using namespace cxtu;
using namespace cxindex;
static void indexDiagnostics(CXTranslationUnit TU, IndexingContext &IdxCtx);
namespace {
//===----------------------------------------------------------------------===//
// Skip Parsed Bodies
//===----------------------------------------------------------------------===//
#ifdef LLVM_ON_WIN32
// FIXME: On windows it is disabled since current implementation depends on
// file inodes.
class SessionSkipBodyData { };
class TUSkipBodyControl {
public:
TUSkipBodyControl(SessionSkipBodyData &sessionData,
PPConditionalDirectiveRecord &ppRec,
Preprocessor &pp) { }
bool isParsed(SourceLocation Loc, FileID FID, const FileEntry *FE) {
return false;
}
void finished() { }
};
#else
/// \brief A "region" in source code identified by the file/offset of the
/// preprocessor conditional directive that it belongs to.
/// Multiple, non-consecutive ranges can be parts of the same region.
///
/// As an example of different regions separated by preprocessor directives:
///
/// \code
/// #1
/// #ifdef BLAH
/// #2
/// #ifdef CAKE
/// #3
/// #endif
/// #2
/// #endif
/// #1
/// \endcode
///
/// There are 3 regions, with non-consecutive parts:
/// #1 is identified as the beginning of the file
/// #2 is identified as the location of "#ifdef BLAH"
/// #3 is identified as the location of "#ifdef CAKE"
///
class PPRegion {
llvm::sys::fs::UniqueID UniqueID;
time_t ModTime;
unsigned Offset;
public:
PPRegion() : UniqueID(0, 0), ModTime(), Offset() {}
PPRegion(llvm::sys::fs::UniqueID UniqueID, unsigned offset, time_t modTime)
: UniqueID(UniqueID), ModTime(modTime), Offset(offset) {}
const llvm::sys::fs::UniqueID &getUniqueID() const { return UniqueID; }
unsigned getOffset() const { return Offset; }
time_t getModTime() const { return ModTime; }
bool isInvalid() const { return *this == PPRegion(); }
friend bool operator==(const PPRegion &lhs, const PPRegion &rhs) {
return lhs.UniqueID == rhs.UniqueID && lhs.Offset == rhs.Offset &&
lhs.ModTime == rhs.ModTime;
}
};
typedef llvm::DenseSet<PPRegion> PPRegionSetTy;
} // end anonymous namespace
namespace llvm {
template <> struct isPodLike<PPRegion> {
static const bool value = true;
};
template <>
struct DenseMapInfo<PPRegion> {
static inline PPRegion getEmptyKey() {
return PPRegion(llvm::sys::fs::UniqueID(0, 0), unsigned(-1), 0);
}
static inline PPRegion getTombstoneKey() {
return PPRegion(llvm::sys::fs::UniqueID(0, 0), unsigned(-2), 0);
}
static unsigned getHashValue(const PPRegion &S) {
llvm::FoldingSetNodeID ID;
const llvm::sys::fs::UniqueID &UniqueID = S.getUniqueID();
ID.AddInteger(UniqueID.getFile());
ID.AddInteger(UniqueID.getDevice());
ID.AddInteger(S.getOffset());
ID.AddInteger(S.getModTime());
return ID.ComputeHash();
}
static bool isEqual(const PPRegion &LHS, const PPRegion &RHS) {
return LHS == RHS;
}
};
}
namespace {
class SessionSkipBodyData {
llvm::sys::Mutex Mux;
PPRegionSetTy ParsedRegions;
public:
SessionSkipBodyData() : Mux(/*recursive=*/false) {}
~SessionSkipBodyData() {
//llvm::errs() << "RegionData: " << Skipped.size() << " - " << Skipped.getMemorySize() << "\n";
}
void copyTo(PPRegionSetTy &Set) {
llvm::MutexGuard MG(Mux);
Set = ParsedRegions;
}
void update(ArrayRef<PPRegion> Regions) {
llvm::MutexGuard MG(Mux);
ParsedRegions.insert(Regions.begin(), Regions.end());
}
};
class TUSkipBodyControl {
SessionSkipBodyData &SessionData;
PPConditionalDirectiveRecord &PPRec;
Preprocessor &PP;
PPRegionSetTy ParsedRegions;
SmallVector<PPRegion, 32> NewParsedRegions;
PPRegion LastRegion;
bool LastIsParsed;
public:
TUSkipBodyControl(SessionSkipBodyData &sessionData,
PPConditionalDirectiveRecord &ppRec,
Preprocessor &pp)
: SessionData(sessionData), PPRec(ppRec), PP(pp) {
SessionData.copyTo(ParsedRegions);
}
bool isParsed(SourceLocation Loc, FileID FID, const FileEntry *FE) {
PPRegion region = getRegion(Loc, FID, FE);
if (region.isInvalid())
return false;
// Check common case, consecutive functions in the same region.
if (LastRegion == region)
return LastIsParsed;
LastRegion = region;
LastIsParsed = ParsedRegions.count(region);
if (!LastIsParsed)
NewParsedRegions.push_back(region);
return LastIsParsed;
}
void finished() {
SessionData.update(NewParsedRegions);
}
private:
PPRegion getRegion(SourceLocation Loc, FileID FID, const FileEntry *FE) {
SourceLocation RegionLoc = PPRec.findConditionalDirectiveRegionLoc(Loc);
if (RegionLoc.isInvalid()) {
if (isParsedOnceInclude(FE)) {
const llvm::sys::fs::UniqueID &ID = FE->getUniqueID();
return PPRegion(ID, 0, FE->getModificationTime());
}
return PPRegion();
}
const SourceManager &SM = PPRec.getSourceManager();
assert(RegionLoc.isFileID());
FileID RegionFID;
unsigned RegionOffset;
std::tie(RegionFID, RegionOffset) = SM.getDecomposedLoc(RegionLoc);
if (RegionFID != FID) {
if (isParsedOnceInclude(FE)) {
const llvm::sys::fs::UniqueID &ID = FE->getUniqueID();
return PPRegion(ID, 0, FE->getModificationTime());
}
return PPRegion();
}
const llvm::sys::fs::UniqueID &ID = FE->getUniqueID();
return PPRegion(ID, RegionOffset, FE->getModificationTime());
}
bool isParsedOnceInclude(const FileEntry *FE) {
return PP.getHeaderSearchInfo().isFileMultipleIncludeGuarded(FE);
}
};
#endif
//===----------------------------------------------------------------------===//
// IndexPPCallbacks
//===----------------------------------------------------------------------===//
class IndexPPCallbacks : public PPCallbacks {
Preprocessor &PP;
IndexingContext &IndexCtx;
bool IsMainFileEntered;
public:
IndexPPCallbacks(Preprocessor &PP, IndexingContext &indexCtx)
: PP(PP), IndexCtx(indexCtx), IsMainFileEntered(false) { }
void FileChanged(SourceLocation Loc, FileChangeReason Reason,
SrcMgr::CharacteristicKind FileType, FileID PrevFID) override {
if (IsMainFileEntered)
return;
SourceManager &SM = PP.getSourceManager();
SourceLocation MainFileLoc = SM.getLocForStartOfFile(SM.getMainFileID());
if (Loc == MainFileLoc && Reason == PPCallbacks::EnterFile) {
IsMainFileEntered = true;
IndexCtx.enteredMainFile(SM.getFileEntryForID(SM.getMainFileID()));
}
}
void InclusionDirective(SourceLocation HashLoc, const Token &IncludeTok,
StringRef FileName, bool IsAngled,
CharSourceRange FilenameRange, const FileEntry *File,
StringRef SearchPath, StringRef RelativePath,
const Module *Imported) override {
bool isImport = (IncludeTok.is(tok::identifier) &&
IncludeTok.getIdentifierInfo()->getPPKeywordID() == tok::pp_import);
IndexCtx.ppIncludedFile(HashLoc, FileName, File, isImport, IsAngled,
Imported);
}
/// MacroDefined - This hook is called whenever a macro definition is seen.
void MacroDefined(const Token &Id, const MacroDirective *MD) override {}
/// MacroUndefined - This hook is called whenever a macro #undef is seen.
/// MI is released immediately following this callback.
void MacroUndefined(const Token &MacroNameTok,
const MacroDefinition &MD) override {}
/// MacroExpands - This is called by when a macro invocation is found.
void MacroExpands(const Token &MacroNameTok, const MacroDefinition &MD,
SourceRange Range, const MacroArgs *Args) override {}
/// SourceRangeSkipped - This hook is called when a source range is skipped.
/// \param Range The SourceRange that was skipped. The range begins at the
/// #if/#else directive and ends after the #endif/#else directive.
void SourceRangeSkipped(SourceRange Range) override {}
};
//===----------------------------------------------------------------------===//
// IndexingConsumer
//===----------------------------------------------------------------------===//
class IndexingConsumer : public ASTConsumer {
IndexingContext &IndexCtx;
TUSkipBodyControl *SKCtrl;
public:
IndexingConsumer(IndexingContext &indexCtx, TUSkipBodyControl *skCtrl)
: IndexCtx(indexCtx), SKCtrl(skCtrl) { }
// ASTConsumer Implementation
void Initialize(ASTContext &Context) override {
IndexCtx.setASTContext(Context);
IndexCtx.startedTranslationUnit();
}
void HandleTranslationUnit(ASTContext &Ctx) override {
if (SKCtrl)
SKCtrl->finished();
}
bool HandleTopLevelDecl(DeclGroupRef DG) override {
IndexCtx.indexDeclGroupRef(DG);
return !IndexCtx.shouldAbort();
}
/// \brief Handle the specified top-level declaration that occurred inside
/// and ObjC container.
void HandleTopLevelDeclInObjCContainer(DeclGroupRef D) override {
// They will be handled after the interface is seen first.
IndexCtx.addTUDeclInObjCContainer(D);
}
/// \brief This is called by the AST reader when deserializing things.
/// The default implementation forwards to HandleTopLevelDecl but we don't
/// care about them when indexing, so have an empty definition.
void HandleInterestingDecl(DeclGroupRef D) override {}
void HandleTagDeclDefinition(TagDecl *D) override {
if (!IndexCtx.shouldIndexImplicitTemplateInsts())
return;
if (IndexCtx.isTemplateImplicitInstantiation(D))
IndexCtx.indexDecl(D);
}
void HandleCXXImplicitFunctionInstantiation(FunctionDecl *D) override {
if (!IndexCtx.shouldIndexImplicitTemplateInsts())
return;
IndexCtx.indexDecl(D);
}
bool shouldSkipFunctionBody(Decl *D) override {
if (!SKCtrl) {
// Always skip bodies.
return true;
}
const SourceManager &SM = IndexCtx.getASTContext().getSourceManager();
SourceLocation Loc = D->getLocation();
if (Loc.isMacroID())
return false;
if (SM.isInSystemHeader(Loc))
return true; // always skip bodies from system headers.
FileID FID;
unsigned Offset;
std::tie(FID, Offset) = SM.getDecomposedLoc(Loc);
// Don't skip bodies from main files; this may be revisited.
if (SM.getMainFileID() == FID)
return false;
const FileEntry *FE = SM.getFileEntryForID(FID);
if (!FE)
return false;
return SKCtrl->isParsed(Loc, FID, FE);
}
};
//===----------------------------------------------------------------------===//
// CaptureDiagnosticConsumer
//===----------------------------------------------------------------------===//
class CaptureDiagnosticConsumer : public DiagnosticConsumer {
SmallVector<StoredDiagnostic, 4> Errors;
public:
void HandleDiagnostic(DiagnosticsEngine::Level level,
const Diagnostic &Info) override {
if (level >= DiagnosticsEngine::Error)
Errors.push_back(StoredDiagnostic(level, Info));
}
};
//===----------------------------------------------------------------------===//
// IndexingFrontendAction
//===----------------------------------------------------------------------===//
class IndexingFrontendAction : public ASTFrontendAction {
IndexingContext IndexCtx;
CXTranslationUnit CXTU;
SessionSkipBodyData *SKData;
std::unique_ptr<TUSkipBodyControl> SKCtrl;
public:
IndexingFrontendAction(CXClientData clientData,
IndexerCallbacks &indexCallbacks,
unsigned indexOptions,
CXTranslationUnit cxTU,
SessionSkipBodyData *skData)
: IndexCtx(clientData, indexCallbacks, indexOptions, cxTU),
CXTU(cxTU), SKData(skData) { }
std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
StringRef InFile) override {
PreprocessorOptions &PPOpts = CI.getPreprocessorOpts();
if (!PPOpts.ImplicitPCHInclude.empty()) {
IndexCtx.importedPCH(
CI.getFileManager().getFile(PPOpts.ImplicitPCHInclude));
}
IndexCtx.setASTContext(CI.getASTContext());
Preprocessor &PP = CI.getPreprocessor();
PP.addPPCallbacks(llvm::make_unique<IndexPPCallbacks>(PP, IndexCtx));
IndexCtx.setPreprocessor(PP);
if (SKData) {
auto *PPRec = new PPConditionalDirectiveRecord(PP.getSourceManager());
PP.addPPCallbacks(std::unique_ptr<PPCallbacks>(PPRec));
SKCtrl = llvm::make_unique<TUSkipBodyControl>(*SKData, *PPRec, PP);
}
return llvm::make_unique<IndexingConsumer>(IndexCtx, SKCtrl.get());
}
void EndSourceFileAction() override {
indexDiagnostics(CXTU, IndexCtx);
}
TranslationUnitKind getTranslationUnitKind() override {
if (IndexCtx.shouldIndexImplicitTemplateInsts())
return TU_Complete;
else
return TU_Prefix;
}
bool hasCodeCompletionSupport() const override { return false; }
};
//===----------------------------------------------------------------------===//
// clang_indexSourceFileUnit Implementation
//===----------------------------------------------------------------------===//
struct IndexSessionData {
CXIndex CIdx;
std::unique_ptr<SessionSkipBodyData> SkipBodyData;
explicit IndexSessionData(CXIndex cIdx)
: CIdx(cIdx), SkipBodyData(new SessionSkipBodyData) {}
};
struct IndexSourceFileInfo {
CXIndexAction idxAction;
CXClientData client_data;
IndexerCallbacks *index_callbacks;
unsigned index_callbacks_size;
unsigned index_options;
const char *source_filename;
const char *const *command_line_args;
int num_command_line_args;
ArrayRef<CXUnsavedFile> unsaved_files;
CXTranslationUnit *out_TU;
unsigned TU_options;
CXErrorCode &result;
};
} // anonymous namespace
static void clang_indexSourceFile_Impl(void *UserData) {
const IndexSourceFileInfo *ITUI =
static_cast<IndexSourceFileInfo *>(UserData);
CXIndexAction cxIdxAction = ITUI->idxAction;
CXClientData client_data = ITUI->client_data;
IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
unsigned index_callbacks_size = ITUI->index_callbacks_size;
unsigned index_options = ITUI->index_options;
const char *source_filename = ITUI->source_filename;
const char * const *command_line_args = ITUI->command_line_args;
int num_command_line_args = ITUI->num_command_line_args;
CXTranslationUnit *out_TU = ITUI->out_TU;
unsigned TU_options = ITUI->TU_options;
if (out_TU)
*out_TU = nullptr;
bool requestedToGetTU = (out_TU != nullptr);
if (!cxIdxAction) {
ITUI->result = CXError_InvalidArguments;
return;
}
if (!client_index_callbacks || index_callbacks_size == 0) {
ITUI->result = CXError_InvalidArguments;
return;
}
IndexerCallbacks CB;
memset(&CB, 0, sizeof(CB));
unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
? index_callbacks_size : sizeof(CB);
memcpy(&CB, client_index_callbacks, ClientCBSize);
IndexSessionData *IdxSession = static_cast<IndexSessionData *>(cxIdxAction);
CIndexer *CXXIdx = static_cast<CIndexer *>(IdxSession->CIdx);
if (CXXIdx->isOptEnabled(CXGlobalOpt_ThreadBackgroundPriorityForIndexing))
setThreadBackgroundPriority();
bool CaptureDiagnostics = !Logger::isLoggingEnabled();
CaptureDiagnosticConsumer *CaptureDiag = nullptr;
if (CaptureDiagnostics)
CaptureDiag = new CaptureDiagnosticConsumer();
// Configure the diagnostics.
IntrusiveRefCntPtr<DiagnosticsEngine>
Diags(CompilerInstance::createDiagnostics(new DiagnosticOptions,
CaptureDiag,
/*ShouldOwnClient=*/true));
// Recover resources if we crash before exiting this function.
llvm::CrashRecoveryContextCleanupRegistrar<DiagnosticsEngine,
llvm::CrashRecoveryContextReleaseRefCleanup<DiagnosticsEngine> >
DiagCleanup(Diags.get());
std::unique_ptr<std::vector<const char *>> Args(
new std::vector<const char *>());
// Recover resources if we crash before exiting this method.
llvm::CrashRecoveryContextCleanupRegistrar<std::vector<const char*> >
ArgsCleanup(Args.get());
Args->insert(Args->end(), command_line_args,
command_line_args + num_command_line_args);
// The 'source_filename' argument is optional. If the caller does not
// specify it then it is assumed that the source file is specified
// in the actual argument list.
// Put the source file after command_line_args otherwise if '-x' flag is
// present it will be unused.
if (source_filename)
Args->push_back(source_filename);
IntrusiveRefCntPtr<CompilerInvocation>
CInvok(createInvocationFromCommandLine(*Args, Diags));
if (!CInvok)
return;
// Recover resources if we crash before exiting this function.
llvm::CrashRecoveryContextCleanupRegistrar<CompilerInvocation,
llvm::CrashRecoveryContextReleaseRefCleanup<CompilerInvocation> >
CInvokCleanup(CInvok.get());
if (CInvok->getFrontendOpts().Inputs.empty())
return;
typedef SmallVector<std::unique_ptr<llvm::MemoryBuffer>, 8> MemBufferOwner;
std::unique_ptr<MemBufferOwner> BufOwner(new MemBufferOwner);
// Recover resources if we crash before exiting this method.
llvm::CrashRecoveryContextCleanupRegistrar<MemBufferOwner> BufOwnerCleanup(
BufOwner.get());
for (auto &UF : ITUI->unsaved_files) {
std::unique_ptr<llvm::MemoryBuffer> MB =
llvm::MemoryBuffer::getMemBufferCopy(getContents(UF), UF.Filename);
CInvok->getPreprocessorOpts().addRemappedFile(UF.Filename, MB.get());
BufOwner->push_back(std::move(MB));
}
// Since libclang is primarily used by batch tools dealing with
// (often very broken) source code, where spell-checking can have a
// significant negative impact on performance (particularly when
// precompiled headers are involved), we disable it.
CInvok->getLangOpts()->SpellChecking = false;
if (index_options & CXIndexOpt_SuppressWarnings)
CInvok->getDiagnosticOpts().IgnoreWarnings = true;
ASTUnit *Unit = ASTUnit::create(CInvok.get(), Diags, CaptureDiagnostics,
/*UserFilesAreVolatile=*/true);
if (!Unit) {
ITUI->result = CXError_InvalidArguments;
return;
}
std::unique_ptr<CXTUOwner> CXTU(
new CXTUOwner(MakeCXTranslationUnit(CXXIdx, Unit)));
// Recover resources if we crash before exiting this method.
llvm::CrashRecoveryContextCleanupRegistrar<CXTUOwner>
CXTUCleanup(CXTU.get());
// Enable the skip-parsed-bodies optimization only for C++; this may be
// revisited.
bool SkipBodies = (index_options & CXIndexOpt_SkipParsedBodiesInSession) &&
CInvok->getLangOpts()->CPlusPlus;
if (SkipBodies)
CInvok->getFrontendOpts().SkipFunctionBodies = true;
std::unique_ptr<IndexingFrontendAction> IndexAction;
IndexAction.reset(new IndexingFrontendAction(client_data, CB,
index_options, CXTU->getTU(),
SkipBodies ? IdxSession->SkipBodyData.get() : nullptr));
// Recover resources if we crash before exiting this method.
llvm::CrashRecoveryContextCleanupRegistrar<IndexingFrontendAction>
IndexActionCleanup(IndexAction.get());
bool Persistent = requestedToGetTU;
bool OnlyLocalDecls = false;
bool PrecompilePreamble = false;
bool CacheCodeCompletionResults = false;
PreprocessorOptions &PPOpts = CInvok->getPreprocessorOpts();
PPOpts.AllowPCHWithCompilerErrors = true;
if (requestedToGetTU) {
OnlyLocalDecls = CXXIdx->getOnlyLocalDecls();
PrecompilePreamble = TU_options & CXTranslationUnit_PrecompiledPreamble;
// FIXME: Add a flag for modules.
CacheCodeCompletionResults
= TU_options & CXTranslationUnit_CacheCompletionResults;
}
if (TU_options & CXTranslationUnit_DetailedPreprocessingRecord) {
PPOpts.DetailedRecord = true;
}
if (!requestedToGetTU && !CInvok->getLangOpts()->Modules)
PPOpts.DetailedRecord = false;
DiagnosticErrorTrap DiagTrap(*Diags);
bool Success = ASTUnit::LoadFromCompilerInvocationAction(
CInvok.get(), CXXIdx->getPCHContainerOperations(), Diags,
IndexAction.get(), Unit, Persistent, CXXIdx->getClangResourcesPath(),
OnlyLocalDecls, CaptureDiagnostics, PrecompilePreamble,
CacheCodeCompletionResults,
/*IncludeBriefCommentsInCodeCompletion=*/false,
/*UserFilesAreVolatile=*/true);
if (DiagTrap.hasErrorOccurred() && CXXIdx->getDisplayDiagnostics())
printDiagsToStderr(Unit);
if (isASTReadError(Unit)) {
ITUI->result = CXError_ASTReadError;
return;
}
if (!Success)
return;
if (out_TU)
*out_TU = CXTU->takeTU();
ITUI->result = CXError_Success;
}
//===----------------------------------------------------------------------===//
// clang_indexTranslationUnit Implementation
//===----------------------------------------------------------------------===//
namespace {
struct IndexTranslationUnitInfo {
CXIndexAction idxAction;
CXClientData client_data;
IndexerCallbacks *index_callbacks;
unsigned index_callbacks_size;
unsigned index_options;
CXTranslationUnit TU;
int result;
};
} // anonymous namespace
static void indexPreprocessingRecord(ASTUnit &Unit, IndexingContext &IdxCtx) {
Preprocessor &PP = Unit.getPreprocessor();
if (!PP.getPreprocessingRecord())
return;
// FIXME: Only deserialize inclusion directives.
bool isModuleFile = Unit.isModuleFile();
for (PreprocessedEntity *PPE : Unit.getLocalPreprocessingEntities()) {
if (InclusionDirective *ID = dyn_cast<InclusionDirective>(PPE)) {
SourceLocation Loc = ID->getSourceRange().getBegin();
// Modules have synthetic main files as input, give an invalid location
// if the location points to such a file.
if (isModuleFile && Unit.isInMainFileID(Loc))
Loc = SourceLocation();
IdxCtx.ppIncludedFile(Loc, ID->getFileName(),
ID->getFile(),
ID->getKind() == InclusionDirective::Import,
!ID->wasInQuotes(), ID->importedModule());
}
}
}
static bool topLevelDeclVisitor(void *context, const Decl *D) {
IndexingContext &IdxCtx = *static_cast<IndexingContext*>(context);
IdxCtx.indexTopLevelDecl(D);
if (IdxCtx.shouldAbort())
return false;
return true;
}
static void indexTranslationUnit(ASTUnit &Unit, IndexingContext &IdxCtx) {
Unit.visitLocalTopLevelDecls(&IdxCtx, topLevelDeclVisitor);
}
static void indexDiagnostics(CXTranslationUnit TU, IndexingContext &IdxCtx) {
if (!IdxCtx.hasDiagnosticCallback())
return;
CXDiagnosticSetImpl *DiagSet = cxdiag::lazyCreateDiags(TU);
IdxCtx.handleDiagnosticSet(DiagSet);
}
static void clang_indexTranslationUnit_Impl(void *UserData) {
IndexTranslationUnitInfo *ITUI =
static_cast<IndexTranslationUnitInfo*>(UserData);
CXTranslationUnit TU = ITUI->TU;
CXClientData client_data = ITUI->client_data;
IndexerCallbacks *client_index_callbacks = ITUI->index_callbacks;
unsigned index_callbacks_size = ITUI->index_callbacks_size;
unsigned index_options = ITUI->index_options;
// Set up the initial return value.
ITUI->result = CXError_Failure;
// Check arguments.
if (isNotUsableTU(TU)) {
LOG_BAD_TU(TU);
ITUI->result = CXError_InvalidArguments;
return;
}
if (!client_index_callbacks || index_callbacks_size == 0) {
ITUI->result = CXError_InvalidArguments;
return;
}
CIndexer *CXXIdx = TU->CIdx;
if (CXXIdx->isOptEnabled(CXGlobalOpt_ThreadBackgroundPriorityForIndexing))
setThreadBackgroundPriority();
IndexerCallbacks CB;
memset(&CB, 0, sizeof(CB));
unsigned ClientCBSize = index_callbacks_size < sizeof(CB)
? index_callbacks_size : sizeof(CB);
memcpy(&CB, client_index_callbacks, ClientCBSize);
std::unique_ptr<IndexingContext> IndexCtx;
IndexCtx.reset(new IndexingContext(client_data, CB, index_options, TU));
// Recover resources if we crash before exiting this method.
llvm::CrashRecoveryContextCleanupRegistrar<IndexingContext>
IndexCtxCleanup(IndexCtx.get());
std::unique_ptr<IndexingConsumer> IndexConsumer;
IndexConsumer.reset(new IndexingConsumer(*IndexCtx, nullptr));
// Recover resources if we crash before exiting this method.
llvm::CrashRecoveryContextCleanupRegistrar<IndexingConsumer>
IndexConsumerCleanup(IndexConsumer.get());
ASTUnit *Unit = cxtu::getASTUnit(TU);
if (!Unit)
return;
ASTUnit::ConcurrencyCheck Check(*Unit);
if (const FileEntry *PCHFile = Unit->getPCHFile())
IndexCtx->importedPCH(PCHFile);
FileManager &FileMgr = Unit->getFileManager();
if (Unit->getOriginalSourceFileName().empty())
IndexCtx->enteredMainFile(nullptr);
else
IndexCtx->enteredMainFile(FileMgr.getFile(Unit->getOriginalSourceFileName()));
IndexConsumer->Initialize(Unit->getASTContext());
indexPreprocessingRecord(*Unit, *IndexCtx);
indexTranslationUnit(*Unit, *IndexCtx);
indexDiagnostics(TU, *IndexCtx);
ITUI->result = CXError_Success;
}
//===----------------------------------------------------------------------===//
// libclang public APIs.
//===----------------------------------------------------------------------===//
extern "C" {
int clang_index_isEntityObjCContainerKind(CXIdxEntityKind K) {
return CXIdxEntity_ObjCClass <= K && K <= CXIdxEntity_ObjCCategory;
}
const CXIdxObjCContainerDeclInfo *
clang_index_getObjCContainerDeclInfo(const CXIdxDeclInfo *DInfo) {
if (!DInfo)
return nullptr;
const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
if (const ObjCContainerDeclInfo *
ContInfo = dyn_cast<ObjCContainerDeclInfo>(DI))
return &ContInfo->ObjCContDeclInfo;
return nullptr;
}
const CXIdxObjCInterfaceDeclInfo *
clang_index_getObjCInterfaceDeclInfo(const CXIdxDeclInfo *DInfo) {
if (!DInfo)
return nullptr;
const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
if (const ObjCInterfaceDeclInfo *
InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
return &InterInfo->ObjCInterDeclInfo;
return nullptr;
}
const CXIdxObjCCategoryDeclInfo *
clang_index_getObjCCategoryDeclInfo(const CXIdxDeclInfo *DInfo){
if (!DInfo)
return nullptr;
const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
if (const ObjCCategoryDeclInfo *
CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
return &CatInfo->ObjCCatDeclInfo;
return nullptr;
}
const CXIdxObjCProtocolRefListInfo *
clang_index_getObjCProtocolRefListInfo(const CXIdxDeclInfo *DInfo) {
if (!DInfo)
return nullptr;
const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
if (const ObjCInterfaceDeclInfo *
InterInfo = dyn_cast<ObjCInterfaceDeclInfo>(DI))
return InterInfo->ObjCInterDeclInfo.protocols;
if (const ObjCProtocolDeclInfo *
ProtInfo = dyn_cast<ObjCProtocolDeclInfo>(DI))
return &ProtInfo->ObjCProtoRefListInfo;
if (const ObjCCategoryDeclInfo *CatInfo = dyn_cast<ObjCCategoryDeclInfo>(DI))
return CatInfo->ObjCCatDeclInfo.protocols;
return nullptr;
}
const CXIdxObjCPropertyDeclInfo *
clang_index_getObjCPropertyDeclInfo(const CXIdxDeclInfo *DInfo) {
if (!DInfo)
return nullptr;
const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
if (const ObjCPropertyDeclInfo *PropInfo = dyn_cast<ObjCPropertyDeclInfo>(DI))
return &PropInfo->ObjCPropDeclInfo;
return nullptr;
}
const CXIdxIBOutletCollectionAttrInfo *
clang_index_getIBOutletCollectionAttrInfo(const CXIdxAttrInfo *AInfo) {
if (!AInfo)
return nullptr;
const AttrInfo *DI = static_cast<const AttrInfo *>(AInfo);
if (const IBOutletCollectionInfo *
IBInfo = dyn_cast<IBOutletCollectionInfo>(DI))
return &IBInfo->IBCollInfo;
return nullptr;
}
const CXIdxCXXClassDeclInfo *
clang_index_getCXXClassDeclInfo(const CXIdxDeclInfo *DInfo) {
if (!DInfo)
return nullptr;
const DeclInfo *DI = static_cast<const DeclInfo *>(DInfo);
if (const CXXClassDeclInfo *ClassInfo = dyn_cast<CXXClassDeclInfo>(DI))
return &ClassInfo->CXXClassInfo;
return nullptr;
}
CXIdxClientContainer
clang_index_getClientContainer(const CXIdxContainerInfo *info) {
if (!info)
return nullptr;
const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
return Container->IndexCtx->getClientContainerForDC(Container->DC);
}
void clang_index_setClientContainer(const CXIdxContainerInfo *info,
CXIdxClientContainer client) {
if (!info)
return;
const ContainerInfo *Container = static_cast<const ContainerInfo *>(info);
Container->IndexCtx->addContainerInMap(Container->DC, client);
}
CXIdxClientEntity clang_index_getClientEntity(const CXIdxEntityInfo *info) {
if (!info)
return nullptr;
const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
return Entity->IndexCtx->getClientEntity(Entity->Dcl);
}
void clang_index_setClientEntity(const CXIdxEntityInfo *info,
CXIdxClientEntity client) {
if (!info)
return;
const EntityInfo *Entity = static_cast<const EntityInfo *>(info);
Entity->IndexCtx->setClientEntity(Entity->Dcl, client);
}
CXIndexAction clang_IndexAction_create(CXIndex CIdx) {
return new IndexSessionData(CIdx);
}
void clang_IndexAction_dispose(CXIndexAction idxAction) {
if (idxAction)
delete static_cast<IndexSessionData *>(idxAction);
}
int clang_indexSourceFile(CXIndexAction idxAction,
CXClientData client_data,
IndexerCallbacks *index_callbacks,
unsigned index_callbacks_size,
unsigned index_options,
const char *source_filename,
const char * const *command_line_args,
int num_command_line_args,
struct CXUnsavedFile *unsaved_files,
unsigned num_unsaved_files,
CXTranslationUnit *out_TU,
unsigned TU_options) {
LOG_FUNC_SECTION {
*Log << source_filename << ": ";
for (int i = 0; i != num_command_line_args; ++i)
*Log << command_line_args[i] << " ";
}
if (num_unsaved_files && !unsaved_files)
return CXError_InvalidArguments;
CXErrorCode result = CXError_Failure;
IndexSourceFileInfo ITUI = {
idxAction,
client_data,
index_callbacks,
index_callbacks_size,
index_options,
source_filename,
command_line_args,
num_command_line_args,
llvm::makeArrayRef(unsaved_files, num_unsaved_files),
out_TU,
TU_options,
result};
if (getenv("LIBCLANG_NOTHREADS")) {
clang_indexSourceFile_Impl(&ITUI);
return result;
}
llvm::CrashRecoveryContext CRC;
if (!RunSafely(CRC, clang_indexSourceFile_Impl, &ITUI)) {
fprintf(stderr, "libclang: crash detected during indexing source file: {\n");
fprintf(stderr, " 'source_filename' : '%s'\n", source_filename);
fprintf(stderr, " 'command_line_args' : [");
for (int i = 0; i != num_command_line_args; ++i) {
if (i)
fprintf(stderr, ", ");
fprintf(stderr, "'%s'", command_line_args[i]);
}
fprintf(stderr, "],\n");
fprintf(stderr, " 'unsaved_files' : [");
for (unsigned i = 0; i != num_unsaved_files; ++i) {
if (i)
fprintf(stderr, ", ");
fprintf(stderr, "('%s', '...', %ld)", unsaved_files[i].Filename,
unsaved_files[i].Length);
}
fprintf(stderr, "],\n");
fprintf(stderr, " 'options' : %d,\n", TU_options);
fprintf(stderr, "}\n");
return 1;
} else if (getenv("LIBCLANG_RESOURCE_USAGE")) {
if (out_TU)
PrintLibclangResourceUsage(*out_TU);
}
return result;
}
int clang_indexTranslationUnit(CXIndexAction idxAction,
CXClientData client_data,
IndexerCallbacks *index_callbacks,
unsigned index_callbacks_size,
unsigned index_options,
CXTranslationUnit TU) {
LOG_FUNC_SECTION {
*Log << TU;
}
IndexTranslationUnitInfo ITUI = { idxAction, client_data, index_callbacks,
index_callbacks_size, index_options, TU,
0 };
if (getenv("LIBCLANG_NOTHREADS")) {
clang_indexTranslationUnit_Impl(&ITUI);
return ITUI.result;
}
llvm::CrashRecoveryContext CRC;
if (!RunSafely(CRC, clang_indexTranslationUnit_Impl, &ITUI)) {
fprintf(stderr, "libclang: crash detected during indexing TU\n");
return 1;
}
return ITUI.result;
}
void clang_indexLoc_getFileLocation(CXIdxLoc location,
CXIdxClientFile *indexFile,
CXFile *file,
unsigned *line,
unsigned *column,
unsigned *offset) {
if (indexFile) *indexFile = nullptr;
if (file) *file = nullptr;
if (line) *line = 0;
if (column) *column = 0;
if (offset) *offset = 0;
SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
if (!location.ptr_data[0] || Loc.isInvalid())
return;
IndexingContext &IndexCtx =
*static_cast<IndexingContext*>(location.ptr_data[0]);
IndexCtx.translateLoc(Loc, indexFile, file, line, column, offset);
}
CXSourceLocation clang_indexLoc_getCXSourceLocation(CXIdxLoc location) {
SourceLocation Loc = SourceLocation::getFromRawEncoding(location.int_data);
if (!location.ptr_data[0] || Loc.isInvalid())
return clang_getNullLocation();
IndexingContext &IndexCtx =
*static_cast<IndexingContext*>(location.ptr_data[0]);
return cxloc::translateSourceLocation(IndexCtx.getASTContext(), Loc);
}
} // end: extern "C"
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