clang 22.0.0git
Classes | Functions | Variables
ASTUnit.cpp File Reference
#include "clang/Frontend/ASTUnit.h"
#include "clang/AST/ASTConsumer.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/CommentCommandTraits.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclGroup.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/DeclarationName.h"
#include "clang/AST/ExternalASTSource.h"
#include "clang/AST/PrettyPrinter.h"
#include "clang/AST/Type.h"
#include "clang/AST/TypeOrdering.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/IdentifierTable.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/LangOptions.h"
#include "clang/Basic/LangStandard.h"
#include "clang/Basic/Module.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/TargetOptions.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/CompilerInvocation.h"
#include "clang/Frontend/FrontendAction.h"
#include "clang/Frontend/FrontendActions.h"
#include "clang/Frontend/FrontendDiagnostic.h"
#include "clang/Frontend/FrontendOptions.h"
#include "clang/Frontend/MultiplexConsumer.h"
#include "clang/Frontend/PrecompiledPreamble.h"
#include "clang/Frontend/Utils.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Lex/HeaderSearchOptions.h"
#include "clang/Lex/Lexer.h"
#include "clang/Lex/PPCallbacks.h"
#include "clang/Lex/PreprocessingRecord.h"
#include "clang/Lex/Preprocessor.h"
#include "clang/Lex/PreprocessorOptions.h"
#include "clang/Lex/Token.h"
#include "clang/Sema/CodeCompleteConsumer.h"
#include "clang/Sema/CodeCompleteOptions.h"
#include "clang/Sema/Sema.h"
#include "clang/Sema/SemaCodeCompletion.h"
#include "clang/Serialization/ASTReader.h"
#include "clang/Serialization/ASTWriter.h"
#include "clang/Serialization/ModuleCache.h"
#include "clang/Serialization/ModuleFile.h"
#include "clang/Serialization/PCHContainerOperations.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/IntrusiveRefCntPtr.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/ScopeExit.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/ADT/StringSet.h"
#include "llvm/ADT/Twine.h"
#include "llvm/ADT/iterator_range.h"
#include "llvm/Bitstream/BitstreamWriter.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/CrashRecoveryContext.h"
#include "llvm/Support/DJB.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/SaveAndRestore.h"
#include "llvm/Support/Timer.h"
#include "llvm/Support/VirtualFileSystem.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <atomic>
#include <cassert>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <memory>
#include <mutex>
#include <optional>
#include <string>
#include <tuple>
#include <utility>
#include <vector>

Go to the source code of this file.

Classes

struct  clang::ASTUnit::ASTWriterData

Functions

template<class T>
static std::unique_ptr< T > valueOrNull (llvm::ErrorOr< std::unique_ptr< T > > Val)
template<class T>
static bool moveOnNoError (llvm::ErrorOr< T > Val, T &Output)
static std::unique_ptr< llvm::MemoryBuffer > getBufferForFileHandlingRemapping (const CompilerInvocation &Invocation, llvm::vfs::FileSystem *VFS, StringRef FilePath, bool isVolatile)
 Get a source buffer for MainFilePath, handling all file-to-file and file-to-buffer remappings inside Invocation.
static uint64_t getDeclShowContexts (const NamedDecl *ND, const LangOptions &LangOpts, bool &IsNestedNameSpecifier)
 Determine the set of code-completion contexts in which this declaration should be shown.
static ASTUnit::StandaloneDiagnostic makeStandaloneDiagnostic (const LangOptions &LangOpts, const StoredDiagnostic &InDiag)
static bool isInMainFile (const clang::Diagnostic &D)
static void AddDefinedMacroToHash (const Token &MacroNameTok, unsigned &Hash)
 Add the given macro to the hash of all top-level entities.
static void AddTopLevelDeclarationToHash (Decl *D, unsigned &Hash)
 Add the given declaration to the hash of all top-level entities.
static bool isNonDriverDiag (const StoredDiagnostic &StoredDiag)
static void checkAndRemoveNonDriverDiags (SmallVectorImpl< StoredDiagnostic > &StoredDiags)
static void checkAndSanitizeDiags (SmallVectorImpl< StoredDiagnostic > &StoredDiagnostics, SourceManager &SM)
static std::pair< unsigned, unsigned > makeStandaloneRange (CharSourceRange Range, const SourceManager &SM, const LangOptions &LangOpts)
static ASTUnit::StandaloneFixIt makeStandaloneFixIt (const SourceManager &SM, const LangOptions &LangOpts, const FixItHint &InFix)
static void CalculateHiddenNames (const CodeCompletionContext &Context, CodeCompletionResult *Results, unsigned NumResults, ASTContext &Ctx, llvm::StringSet< llvm::BumpPtrAllocator > &HiddenNames)
 Helper function that computes which global names are hidden by the local code-completion results.
static bool serializeUnit (ASTWriter &Writer, SmallVectorImpl< char > &Buffer, Sema &S, raw_ostream &OS)

Variables

const unsigned DefaultPreambleRebuildInterval = 5
 After failing to build a precompiled preamble (due to errors in the source that occurs in the preamble), the number of reparses during which we'll skip even trying to precompile the preamble.
static std::atomic< unsigned > ActiveASTUnitObjects
 Tracks the number of ASTUnit objects that are currently active.

Function Documentation

◆ AddDefinedMacroToHash()

void AddDefinedMacroToHash ( const Token & MacroNameTok,
unsigned & Hash )
static

Add the given macro to the hash of all top-level entities.

Definition at line 929 of file ASTUnit.cpp.

References clang::Token::getIdentifierInfo(), and clang::IdentifierInfo::getName().

◆ AddTopLevelDeclarationToHash()

void AddTopLevelDeclarationToHash ( Decl * D,
unsigned & Hash )
static

Add the given declaration to the hash of all top-level entities.

Definition at line 952 of file ASTUnit.cpp.

References clang::Decl::getDeclContext(), clang::DeclContext::getLookupParent(), and clang::DeclContext::isTranslationUnit().

◆ CalculateHiddenNames()

void CalculateHiddenNames ( const CodeCompletionContext & Context,
CodeCompletionResult * Results,
unsigned NumResults,
ASTContext & Ctx,
llvm::StringSet< llvm::BumpPtrAllocator > & HiddenNames )
static

Helper function that computes which global names are hidden by the local code-completion results.

Definition at line 2033 of file ASTUnit.cpp.

References clang::CodeCompletionContext::CCC_ArrowMemberAccess, clang::CodeCompletionContext::CCC_Attribute, clang::CodeCompletionContext::CCC_ClassOrStructTag, clang::CodeCompletionContext::CCC_ClassStructUnion, clang::CodeCompletionContext::CCC_DotMemberAccess, clang::CodeCompletionContext::CCC_EnumTag, clang::CodeCompletionContext::CCC_Expression, clang::CodeCompletionContext::CCC_IncludedFile, clang::CodeCompletionContext::CCC_MacroName, clang::CodeCompletionContext::CCC_MacroNameUse, clang::CodeCompletionContext::CCC_Namespace, clang::CodeCompletionContext::CCC_NaturalLanguage, clang::CodeCompletionContext::CCC_NewName, clang::CodeCompletionContext::CCC_ObjCCategoryName, clang::CodeCompletionContext::CCC_ObjCClassForwardDecl, clang::CodeCompletionContext::CCC_ObjCClassMessage, clang::CodeCompletionContext::CCC_ObjCImplementation, clang::CodeCompletionContext::CCC_ObjCInstanceMessage, clang::CodeCompletionContext::CCC_ObjCInterface, clang::CodeCompletionContext::CCC_ObjCInterfaceName, clang::CodeCompletionContext::CCC_ObjCIvarList, clang::CodeCompletionContext::CCC_ObjCMessageReceiver, clang::CodeCompletionContext::CCC_ObjCPropertyAccess, clang::CodeCompletionContext::CCC_ObjCProtocolName, clang::CodeCompletionContext::CCC_Other, clang::CodeCompletionContext::CCC_OtherWithMacros, clang::CodeCompletionContext::CCC_ParenthesizedExpression, clang::CodeCompletionContext::CCC_PreprocessorDirective, clang::CodeCompletionContext::CCC_PreprocessorExpression, clang::CodeCompletionContext::CCC_Recovery, clang::CodeCompletionContext::CCC_SelectorName, clang::CodeCompletionContext::CCC_Statement, clang::CodeCompletionContext::CCC_Symbol, clang::CodeCompletionContext::CCC_SymbolOrNewName, clang::CodeCompletionContext::CCC_TopLevel, clang::CodeCompletionContext::CCC_TopLevelOrExpression, clang::CodeCompletionContext::CCC_Type, clang::CodeCompletionContext::CCC_TypeQualifiers, clang::CodeCompletionContext::CCC_UnionTag, clang::CodeCompletionResult::Declaration, clang::DeclarationName::getAsIdentifierInfo(), clang::DeclarationName::getAsString(), clang::NamedDecl::getDeclName(), clang::Decl::getIdentifierNamespace(), clang::ASTContext::getLangOpts(), clang::NamedDecl::getUnderlyingDecl(), clang::Decl::IDNS_Member, clang::Decl::IDNS_Namespace, clang::Decl::IDNS_NonMemberOperator, clang::Decl::IDNS_Ordinary, clang::Decl::IDNS_Tag, and clang::Decl::IDNS_Type.

◆ checkAndRemoveNonDriverDiags()

void checkAndRemoveNonDriverDiags ( SmallVectorImpl< StoredDiagnostic > & StoredDiags)
static

Definition at line 1127 of file ASTUnit.cpp.

References isNonDriverDiag().

◆ checkAndSanitizeDiags()

void checkAndSanitizeDiags ( SmallVectorImpl< StoredDiagnostic > & StoredDiagnostics,
SourceManager & SM )
static

Definition at line 1133 of file ASTUnit.cpp.

References SM.

◆ getBufferForFileHandlingRemapping()

std::unique_ptr< llvm::MemoryBuffer > getBufferForFileHandlingRemapping ( const CompilerInvocation & Invocation,
llvm::vfs::FileSystem * VFS,
StringRef FilePath,
bool isVolatile )
static

Get a source buffer for MainFilePath, handling all file-to-file and file-to-buffer remappings inside Invocation.

Definition at line 154 of file ASTUnit.cpp.

References clang::CompilerInvocation::getPreprocessorOpts(), and valueOrNull().

◆ getDeclShowContexts()

uint64_t getDeclShowContexts ( const NamedDecl * ND,
const LangOptions & LangOpts,
bool & IsNestedNameSpecifier )
static

Determine the set of code-completion contexts in which this declaration should be shown.

Definition at line 283 of file ASTUnit.cpp.

References clang::CodeCompletionContext::CCC_ClassOrStructTag, clang::CodeCompletionContext::CCC_ClassStructUnion, clang::CodeCompletionContext::CCC_EnumTag, clang::CodeCompletionContext::CCC_Expression, clang::CodeCompletionContext::CCC_Namespace, clang::CodeCompletionContext::CCC_ObjCCategoryName, clang::CodeCompletionContext::CCC_ObjCClassForwardDecl, clang::CodeCompletionContext::CCC_ObjCInterfaceName, clang::CodeCompletionContext::CCC_ObjCIvarList, clang::CodeCompletionContext::CCC_ObjCMessageReceiver, clang::CodeCompletionContext::CCC_ObjCProtocolName, clang::CodeCompletionContext::CCC_ParenthesizedExpression, clang::CodeCompletionContext::CCC_Statement, clang::CodeCompletionContext::CCC_TopLevel, clang::CodeCompletionContext::CCC_Type, clang::CodeCompletionContext::CCC_UnionTag, clang::NamedDecl::getUnderlyingDecl(), and clang::isa().

◆ isInMainFile()

bool isInMainFile ( const clang::Diagnostic & D)
static

Definition at line 731 of file ASTUnit.cpp.

References clang::Diagnostic::getLocation(), clang::Diagnostic::getSourceManager(), clang::Diagnostic::hasSourceManager(), clang::SourceLocation::isValid(), and clang::SourceManager::isWrittenInMainFile().

◆ isNonDriverDiag()

bool isNonDriverDiag ( const StoredDiagnostic & StoredDiag)
static

Definition at line 1122 of file ASTUnit.cpp.

References clang::StoredDiagnostic::getLocation(), and clang::SourceLocation::isValid().

Referenced by checkAndRemoveNonDriverDiags().

◆ makeStandaloneDiagnostic()

ASTUnit::StandaloneDiagnostic makeStandaloneDiagnostic ( const LangOptions & LangOpts,
const StoredDiagnostic & InDiag )
static

Definition at line 1308 of file ASTUnit.cpp.

References clang::ASTUnit::StandaloneDiagnostic::Filename, clang::ASTUnit::StandaloneDiagnostic::FixIts, clang::StoredDiagnostic::getFixIts(), clang::StoredDiagnostic::getID(), clang::StoredDiagnostic::getLevel(), clang::StoredDiagnostic::getLocation(), clang::FullSourceLoc::getManager(), clang::StoredDiagnostic::getMessage(), clang::StoredDiagnostic::getRanges(), clang::ASTUnit::StandaloneDiagnostic::ID, clang::SourceLocation::isInvalid(), clang::ASTUnit::StandaloneDiagnostic::Level, clang::ASTUnit::StandaloneDiagnostic::LocOffset, makeStandaloneFixIt(), makeStandaloneRange(), clang::ASTUnit::StandaloneDiagnostic::Message, clang::ASTUnit::StandaloneDiagnostic::Ranges, and SM.

◆ makeStandaloneFixIt()

ASTUnit::StandaloneFixIt makeStandaloneFixIt ( const SourceManager & SM,
const LangOptions & LangOpts,
const FixItHint & InFix )
static

Definition at line 1295 of file ASTUnit.cpp.

References clang::ASTUnit::StandaloneFixIt::BeforePreviousInsertions, clang::FixItHint::BeforePreviousInsertions, clang::ASTUnit::StandaloneFixIt::CodeToInsert, clang::FixItHint::CodeToInsert, clang::ASTUnit::StandaloneFixIt::InsertFromRange, clang::FixItHint::InsertFromRange, makeStandaloneRange(), clang::ASTUnit::StandaloneFixIt::RemoveRange, clang::FixItHint::RemoveRange, and SM.

Referenced by makeStandaloneDiagnostic().

◆ makeStandaloneRange()

std::pair< unsigned, unsigned > makeStandaloneRange ( CharSourceRange Range,
const SourceManager & SM,
const LangOptions & LangOpts )
static

Definition at line 1287 of file ASTUnit.cpp.

References clang::CharSourceRange::getBegin(), clang::CharSourceRange::getEnd(), clang::Lexer::makeFileCharRange(), and SM.

Referenced by makeStandaloneDiagnostic(), and makeStandaloneFixIt().

◆ moveOnNoError()

template<class T>
bool moveOnNoError ( llvm::ErrorOr< T > Val,
T & Output )
static

Definition at line 144 of file ASTUnit.cpp.

References clang::T.

Referenced by clang::PrecompiledPreamble::CanReuse().

◆ serializeUnit()

bool serializeUnit ( ASTWriter & Writer,
SmallVectorImpl< char > & Buffer,
Sema & S,
raw_ostream & OS )
static

Definition at line 2389 of file ASTUnit.cpp.

References clang::ASTWriter::WriteAST().

Referenced by clang::ASTUnit::serialize().

◆ valueOrNull()

template<class T>
std::unique_ptr< T > valueOrNull ( llvm::ErrorOr< std::unique_ptr< T > > Val)
static

Definition at line 137 of file ASTUnit.cpp.

Referenced by getBufferForFileHandlingRemapping().

Variable Documentation

◆ ActiveASTUnitObjects

std::atomic<unsigned> ActiveASTUnitObjects
static

Tracks the number of ASTUnit objects that are currently active.

Used for debugging purposes only.

Definition at line 235 of file ASTUnit.cpp.

Referenced by clang::ASTUnit::~ASTUnit().

◆ DefaultPreambleRebuildInterval

const unsigned DefaultPreambleRebuildInterval = 5

After failing to build a precompiled preamble (due to errors in the source that occurs in the preamble), the number of reparses during which we'll skip even trying to precompile the preamble.

Definition at line 230 of file ASTUnit.cpp.

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