Implements an efficient mapping from strings to IdentifierInfo nodes. More...

#include "clang/Basic/IdentifierTable.h"

Public Types
using	iterator = HashTableTy::const_iterator

using	const_iterator = HashTableTy::const_iterator

Public Member Functions
	IdentifierTable (IdentifierInfoLookup *ExternalLookup=nullptr)
	Create the identifier table. More...

	IdentifierTable (const LangOptions &LangOpts, IdentifierInfoLookup *ExternalLookup=nullptr)
	Create the identifier table, populating it with info about the language keywords for the language specified by `LangOpts`. More...

void	setExternalIdentifierLookup (IdentifierInfoLookup *IILookup)
	Set the external identifier lookup mechanism. More...

IdentifierInfoLookup *	getExternalIdentifierLookup () const
	Retrieve the external identifier lookup object, if any. More...

llvm::BumpPtrAllocator &	getAllocator ()

IdentifierInfo &	get (StringRef Name)
	Return the identifier token info for the specified named identifier. More...

IdentifierInfo &	get (StringRef Name, tok::TokenKind TokenCode)

IdentifierInfo &	getOwn (StringRef Name)
	Gets an IdentifierInfo for the given name without consulting external sources. More...

iterator	begin () const

iterator	end () const

unsigned	size () const

iterator	find (StringRef Name) const

void	PrintStats () const
	Print some statistics to stderr that indicate how well the hashing is doing. More...

void	AddKeywords (const LangOptions &LangOpts)
	Populate the identifier table with info about the language keywords for the language specified by `LangOpts`. More...

Detailed Description

Implements an efficient mapping from strings to IdentifierInfo nodes.

This has no other purpose, but this is an extremely performance-critical piece of the code, as each occurrence of every identifier goes through here when lexed.

Definition at line 563 of file IdentifierTable.h.

Member Typedef Documentation

◆ const_iterator

using clang::IdentifierTable::const_iterator = HashTableTy::const_iterator

Definition at line 656 of file IdentifierTable.h.

◆ iterator

using clang::IdentifierTable::iterator = HashTableTy::const_iterator

Definition at line 655 of file IdentifierTable.h.

Constructor & Destructor Documentation

◆ IdentifierTable() [1/2]

IdentifierTable::IdentifierTable ( IdentifierInfoLookup * ExternalLookup = nullptr )

explicit

Create the identifier table.

Definition at line 66 of file IdentifierTable.cpp.

◆ IdentifierTable() [2/2]

IdentifierTable::IdentifierTable	(	const LangOptions &	LangOpts,
		IdentifierInfoLookup *	ExternalLookup = `nullptr`
	)

explicit

Create the identifier table, populating it with info about the language keywords for the language specified by LangOpts.

Definition at line 70 of file IdentifierTable.cpp.

Member Function Documentation

◆ AddKeywords()

void IdentifierTable::AddKeywords ( const LangOptions & LangOpts )

Populate the identifier table with info about the language keywords for the language specified by LangOpts.

AddKeywords - Add all keywords to the symbol table.

Definition at line 213 of file IdentifierTable.cpp.

Referenced by clang::Preprocessor::Initialize().

◆ begin()

iterator clang::IdentifierTable::begin ( ) const

inline

Definition at line 658 of file IdentifierTable.h.

◆ end()

iterator clang::IdentifierTable::end ( ) const

inline

Definition at line 659 of file IdentifierTable.h.

◆ find()

iterator clang::IdentifierTable::find ( StringRef Name ) const

inline

Definition at line 662 of file IdentifierTable.h.

◆ get() [1/2]

IdentifierInfo& clang::IdentifierTable::get ( StringRef Name )

inline

Return the identifier token info for the specified named identifier.

Definition at line 596 of file IdentifierTable.h.

Referenced by clang::Sema::ActOnCapturedRegionStart(), clang::Sema::ActOnCharacterConstant(), clang::Sema::ActOnCompoundRequirement(), clang::Sema::ActOnNumericConstant(), clang::Sema::ActOnObjCBoolLiteral(), clang::Sema::ActOnOpenMPTileDirective(), clang::Sema::ActOnOpenMPUnrollDirective(), clang::Sema::ActOnStringLiteral(), AddCXXOperatorKeyword(), clang::format::AdditionalKeywords::AdditionalKeywords(), clang::Sema::AddKnownFunctionAttributes(), BuildNonArrayForRange(), clang::Sema::BuildObjCArrayLiteral(), clang::Sema::BuildObjCBoxedExpr(), clang::Sema::BuildObjCDictionaryLiteral(), clang::CodeGen::CGCXXABI::buildThisParam(), checkMappableExpressionList(), clang::Sema::CheckObjCForCollectionOperand(), clang::Sema::checkOpenMPDeclareVariantFunction(), cleanupDeallocOrFinalize(), configureBlocksRuntimeObject(), CreateAAPCSABIBuiltinVaListDecl(), CreateAArch64ABIBuiltinVaListDecl(), clang::Sema::CreateBuiltinBinOp(), CreateHexagonBuiltinVaListDecl(), CreatePowerABIBuiltinVaListDecl(), CreateSystemZBuiltinVaListDecl(), CreateX86_64ABIBuiltinVaListDecl(), clang::Sema::DeclareGlobalNewDelete(), clang::Sema::DefaultLvalueConversion(), clang::CodeGen::CodeGenFunction::EmitBlockCopyAndAutorelease(), clang::CodeGen::CodeGenFunction::EmitObjCMRRAutoreleasePoolPop(), clang::CodeGen::CodeGenFunction::EmitObjCMRRAutoreleasePoolPush(), emitOutlinedFunctionPrologue(), GCRewriteFinalize(), clang::CodeGen::CodeGenFunction::GenerateBlockFunction(), clang::CodeGen::CodeGenFunction::GenerateObjCAtomicGetterCopyHelperFunction(), clang::CodeGen::CodeGenFunction::GenerateObjCAtomicSetterCopyHelperFunction(), clang::CodeGen::CodeGenModule::GetAddrOfConstantCFString(), clang::ASTContext::getBlockDescriptorExtendedType(), clang::ASTContext::getBlockDescriptorType(), clang::ASTContext::getBoolName(), clang::ObjCPropertyDecl::getDefaultSynthIvarName(), getErrnoFunc(), getErrnoVar(), clang::Sema::getFloat128Identifier(), clang::getKeywordSelector(), clang::ASTContext::getMakeIntegerSeqName(), clang::NSAPI::getNSArraySelector(), clang::NSAPI::getNSClassId(), clang::ASTContext::getNSCopyingName(), clang::NSAPI::getNSDictionarySelector(), clang::NSAPI::getNSNumberLiteralSelector(), clang::ASTContext::getNSObjectName(), clang::NSAPI::getNSSetSelector(), clang::NSAPI::getNSStringSelector(), clang::GetNullarySelector(), clang::ASTContext::getObjCProtocolDecl(), clang::Sema::getOrCreateStdNamespace(), clang::Sema::getSuperIdentifier(), clang::ASTContext::getTypePackElementName(), clang::GetUnarySelector(), clang::ASTImporter::Import(), clang::Parser::Initialize(), clang::Sema::Initialize(), isCFStringType(), clang::Sema::isKnownName(), clang::NSAPI::isMacroDefined(), clang::Preprocessor::isMacroDefined(), isNSStringType(), clang::Sema::isStdInitializerList(), isValidInteropVariable(), clang::Sema::lookupCoroutineTraits(), clang::Sema::LookupInlineAsmVarDeclField(), clang::Sema::lookupStdExperimentalNamespace(), lookupStdNamespace(), PropertyMemoryAttribute(), and shouldRunOnFunctionOrMethod().

◆ get() [2/2]

IdentifierInfo& clang::IdentifierTable::get	(	StringRef	Name,
		tok::TokenKind	TokenCode
	)

inline

Definition at line 620 of file IdentifierTable.h.

◆ getAllocator()

llvm::BumpPtrAllocator& clang::IdentifierTable::getAllocator ( )

inline

Definition at line 590 of file IdentifierTable.h.

◆ getExternalIdentifierLookup()

IdentifierInfoLookup* clang::IdentifierTable::getExternalIdentifierLookup ( ) const

inline

Retrieve the external identifier lookup object, if any.

Definition at line 586 of file IdentifierTable.h.

◆ getOwn()

IdentifierInfo& clang::IdentifierTable::getOwn ( StringRef Name )

inline

Gets an IdentifierInfo for the given name without consulting external sources.

This is a version of get() meant for external sources that want to introduce or modify an identifier. If they called get(), they would likely end up in a recursion.

Definition at line 633 of file IdentifierTable.h.

◆ PrintStats()

void IdentifierTable::PrintStats ( ) const

Print some statistics to stderr that indicate how well the hashing is doing.

PrintStats - Print statistics about how well the identifier table is doing at hashing identifiers.

Definition at line 383 of file IdentifierTable.cpp.

Referenced by clang::FrontendAction::EndSourceFile().

◆ setExternalIdentifierLookup()

void clang::IdentifierTable::setExternalIdentifierLookup ( IdentifierInfoLookup * IILookup )

inline

Set the external identifier lookup mechanism.

Definition at line 581 of file IdentifierTable.h.

◆ size()

unsigned clang::IdentifierTable::size ( ) const

inline

Definition at line 660 of file IdentifierTable.h.

The documentation for this class was generated from the following files:

include/clang/Basic/IdentifierTable.h
lib/Basic/IdentifierTable.cpp

Public Types

Public Member Functions

Detailed Description

Member Typedef Documentation

◆ const_iterator

◆ iterator

Constructor & Destructor Documentation

◆ IdentifierTable() [1/2]

◆ IdentifierTable() [2/2]

Member Function Documentation

◆ AddKeywords()

◆ begin()

◆ end()

◆ find()

◆ get() [1/2]

◆ get() [2/2]

◆ getAllocator()

◆ getExternalIdentifierLookup()

◆ getOwn()

◆ PrintStats()

◆ setExternalIdentifierLookup()

◆ size()