Smart pointer class that efficiently represents Objective-C method names. More...

#include "clang/Basic/IdentifierTable.h"

Public Member Functions
	Selector ()=default
	The default ctor should only be used when creating data structures that will contain selectors.
	Selector (uintptr_t V)
bool	operator== (Selector RHS) const
	operator==/!= - Indicate whether the specified selectors are identical.
bool	operator!= (Selector RHS) const
void *	getAsOpaquePtr () const
bool	isNull () const
	Determine whether this is the empty selector.
bool	isKeywordSelector () const
bool	isUnarySelector () const
bool	isKeywordSelector (ArrayRef< StringRef > Names) const
	If this selector is the specific keyword selector described by Names.
bool	isUnarySelector (StringRef Name) const
	If this selector is the specific unary selector described by Name.
unsigned	getNumArgs () const
const IdentifierInfo *	getIdentifierInfoForSlot (unsigned argIndex) const
	Retrieve the identifier at a given position in the selector.
StringRef	getNameForSlot (unsigned argIndex) const
	Retrieve the name at a given position in the selector.
std::string	getAsString () const
	Derive the full selector name (e.g.
void	print (llvm::raw_ostream &OS) const
	Prints the full selector name (e.g. "foo:bar:").
void	dump () const
ObjCMethodFamily	getMethodFamily () const
	Derive the conventional family of this method.
ObjCStringFormatFamily	getStringFormatFamily () const

Static Public Member Functions
static Selector	getEmptyMarker ()
static Selector	getTombstoneMarker ()
static ObjCInstanceTypeFamily	getInstTypeMethodFamily (Selector sel)

Friends
class	Diagnostic
class	SelectorTable
class	DeclarationName

Detailed Description

Smart pointer class that efficiently represents Objective-C method names.

This class will either point to an IdentifierInfo or a MultiKeywordSelector (which is private). This enables us to optimize selectors that take no arguments and selectors that take 1 argument, which accounts for 78% of all selectors in Cocoa.h.

Definition at line 1044 of file IdentifierTable.h.

Constructor & Destructor Documentation

◆ Selector() [1/2]

clang::Selector::Selector ( )

default

The default ctor should only be used when creating data structures that will contain selectors.

◆ Selector() [2/2]

clang::Selector::Selector ( uintptr_t V )

inlineexplicit

Definition at line 1114 of file IdentifierTable.h.

References V.

Member Function Documentation

◆ dump()

LLVM_DUMP_METHOD void Selector::dump ( ) const

Definition at line 592 of file IdentifierTable.cpp.

References print().

◆ getAsOpaquePtr()

void * clang::Selector::getAsOpaquePtr ( ) const

inline

Definition at line 1126 of file IdentifierTable.h.

Referenced by clang::serialization::DeclarationNameKey::DeclarationNameKey(), llvm::PointerLikeTypeTraits< clang::Selector >::getAsVoidPointer(), llvm::DenseMapInfo< clang::Selector >::getHashValue(), clang::ASTWriter::getSelectorRef(), and clang::ObjCMessageExpr::setSelector().

◆ getAsString()

std::string Selector::getAsString ( ) const

Derive the full selector name (e.g.

"foo:bar:") and return it as an std::string.

Definition at line 565 of file IdentifierTable.cpp.

References clang::IdentifierInfo::getName(), getNumArgs(), and isNull().

Referenced by clang::SemaObjC::ActOnMethodDeclaration(), clang::ast_matchers::AST_MATCHER_P(), clang::SemaObjC::CheckMessageArgumentTypes(), clang::ASTContext::getObjCEncodingForPropertyDecl(), clang::SemaObjC::ParseObjCSelectorExpression(), print(), and clang::SemaObjC::SelectorsForTypoCorrection().

◆ getEmptyMarker()

Selector clang::Selector::getEmptyMarker ( )

inlinestatic

Definition at line 1187 of file IdentifierTable.h.

Referenced by llvm::DenseMapInfo< clang::Selector >::getEmptyKey().

◆ getIdentifierInfoForSlot()

const IdentifierInfo * Selector::getIdentifierInfoForSlot ( unsigned argIndex ) const

Retrieve the identifier at a given position in the selector.

Note that the identifier pointer returned may be NULL. Clients that only care about the text of the identifier string, and not the specific, uniqued identifier pointer, should use getNameForSlot(), which returns an empty string when the identifier pointer would be NULL.

Parameters

argIndex The index for which we want to retrieve the identifier. This index shall be less than getNumArgs() unless this is a keyword selector, in which case 0 is the only permissible value.

Returns: the uniqued identifier for this slot, or NULL if this slot has no corresponding identifier.

Definition at line 537 of file IdentifierTable.cpp.

References clang::MultiKeywordSelector::getIdentifierInfoForSlot().

Referenced by clang::ento::ObjCMethodCall::argumentsMayEscape(), clang::serialization::ComputeHash(), clang::CodeCompletionResult::createCodeCompletionStringForDecl(), GetAssumedMessageSendExprType(), getInstTypeMethodFamily(), getNameForSlot(), clang::CodeCompletionResult::getOrderedName(), getStandardSelLoc(), clang::ASTImporter::Import(), isAcceptableObjCSelector(), IsStructurallyEquivalent(), and clang::CodeGen::CodeGenFunction::StartObjCMethod().

◆ getInstTypeMethodFamily()

ObjCInstanceTypeFamily Selector::getInstTypeMethodFamily ( Selector sel )

static

Definition at line 650 of file IdentifierTable.cpp.

References getIdentifierInfoForSlot(), clang::IdentifierInfo::getName(), clang::OIT_Array, clang::OIT_Dictionary, clang::OIT_Init, clang::OIT_None, clang::OIT_ReturnsSelf, clang::OIT_Singleton, and startsWithWord().

◆ getMethodFamily()

ObjCMethodFamily clang::Selector::getMethodFamily ( ) const

inline

Derive the conventional family of this method.

Definition at line 1179 of file IdentifierTable.h.

Referenced by clang::SemaObjC::ActOnMethodDeclaration(), clang::SemaObjC::BuildInstanceMessage(), clang::ObjCMessageExpr::getMethodFamily(), clang::ObjCMethodDecl::getMethodFamily(), clang::SemaObjC::ParseObjCSelectorExpression(), and tryGenerateSpecializedMessageSend().

◆ getNameForSlot()

StringRef Selector::getNameForSlot ( unsigned argIndex ) const

Retrieve the name at a given position in the selector.

Parameters

argIndex The index for which we want to retrieve the name. This index shall be less than getNumArgs() unless this is a keyword selector, in which case 0 is the only permissible value.