clang::IdentifierTable Class Reference

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
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 498 of file IdentifierTable.h.

Member Typedef Documentation

const_iterator

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

Definition at line 591 of file IdentifierTable.h.

iterator

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

Definition at line 590 of file IdentifierTable.h.

Constructor & Destructor Documentation

IdentifierTable() [1/2]

IdentifierTable::IdentifierTable ( IdentifierInfoLookup *  ExternalLookup = nullptr )

explicit

Create the identifier table.

Definition at line 82 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 86 of file IdentifierTable.cpp.

References AddKeywords().

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 218 of file IdentifierTable.cpp.

References AddKeyword().

Referenced by IdentifierTable(), and clang::Preprocessor::Initialize().

begin()

iterator clang::IdentifierTable::begin ( ) const

inline

Definition at line 593 of file IdentifierTable.h.

end()

iterator clang::IdentifierTable::end ( ) const

inline

Definition at line 594 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 531 of file IdentifierTable.h.

Referenced by AddCXXOperatorKeyword(), clang::format::AdditionalKeywords::AdditionalKeywords(), AddKeyword(), AllTrivialInitializers(), buildCapture(), buildMemcpyForAssignmentOp(), BuildNonArrayForRange(), clang::CodeGen::CGCXXABI::buildThisParam(), CheckKeyForObjCARCConversion(), cleanupDeallocOrFinalize(), configureBlocksRuntimeObject(), clang::Sema::DeclareGlobalNewDelete(), clang::CodeGen::CodeGenFunction::EmitBlockCopyAndAutorelease(), emitGlobalDtorWithCXAAtExit(), clang::CodeGen::CodeGenFunction::EmitObjCMRRAutoreleasePoolPop(), clang::CodeGen::CodeGenFunction::EmitObjCMRRAutoreleasePoolPush(), emitOutlinedFunctionPrologue(), emitReplacement(), clang::Builtin::Context::forgetBuiltin(), clang::format::FormatTokenLexer::FormatTokenLexer(), GCRewriteFinalize(), clang::CodeGen::CodeGenFunction::GenerateBlockFunction(), clang::CodeGen::CodeGenFunction::GenerateCopyHelperFunction(), clang::CodeGen::CodeGenFunction::GenerateDestroyHelperFunction(), clang::CodeGen::CodeGenFunction::GenerateObjCAtomicGetterCopyHelperFunction(), clang::CodeGen::CodeGenFunction::GenerateObjCAtomicSetterCopyHelperFunction(), clang::CodeGen::CodeGenModule::GetAddrOfConstantCFString(), clang::ASTContext::getBlockDescriptorExtendedType(), clang::ASTContext::getBlockDescriptorType(), getBlockLayoutInfoString(), clang::ASTContext::getBoolName(), GetCFNumberSize(), clang::ObjCPropertyDecl::getDefaultSynthIvarName(), clang::Sema::getFloat128Identifier(), getFunctionSourceLocation(), 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::getSuperIdentifier(), clang::ASTContext::getTypePackElementName(), clang::GetUnarySelector(), hasDefaultCXXMethodCC(), hasMRCWeakIvars(), hasSuperInitCall(), clang::ASTImporter::Import(), clang::Parser::Initialize(), clang::Sema::Initialize(), clang::Builtin::Context::initializeBuiltins(), isCFStringType(), clang::NSAPI::isMacroDefined(), clang::Preprocessor::isMacroDefined(), isNSStringType(), clang::NSAPI::isSubclassOfNSClass(), LookupMethodInReceiverType(), LookupStdInitializerList(), lookupStdNamespace(), lookupStdTypeTraitMember(), noteMemberDeclaredHere(), clang::ObjCNoReturn::ObjCNoReturn(), PropertyMemoryAttribute(), clang::TreeTransform< Derived >::RebuildShuffleVectorExpr(), ReplaceWithClasstype(), shouldRunOnFunctionOrMethod(), and transferARCOwnershipToDeclaratorChunk().

get() [2/2]

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

inline

Definition at line 555 of file IdentifierTable.h.

getAllocator()

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

inline

Definition at line 525 of file IdentifierTable.h.

getExternalIdentifierLookup()

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

inline

Retrieve the external identifier lookup object, if any.

Definition at line 521 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 568 of file IdentifierTable.h.

References clang::IdentifierInfo::setModulesImport().

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 342 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 516 of file IdentifierTable.h.

size()

unsigned clang::IdentifierTable::size ( ) const

inline

Definition at line 595 of file IdentifierTable.h.

---

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

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