clang::PackExpansionType Class Reference

Represents a pack expansion of types. More...

#include <Type.h>

Inheritance diagram for clang::PackExpansionType:

Collaboration diagram for clang::PackExpansionType:

List of all members.

Public Member Functions
QualType	getPattern () const
	Retrieve the pattern of this pack expansion, which is the type that will be repeatedly instantiated when instantiating the pack expansion itself.
Optional< unsigned >	getNumExpansions () const
	Retrieve the number of expansions that this pack expansion will generate, if known.
bool	isSugared () const
QualType	desugar () const
void	Profile (llvm::FoldingSetNodeID &ID)
Static Public Member Functions
static void	Profile (llvm::FoldingSetNodeID &ID, QualType Pattern, Optional< unsigned > NumExpansions)
static bool	classof (const Type *T)
Friends
class	ASTContext

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Detailed Description

Represents a pack expansion of types.

Pack expansions are part of C++0x variadic templates. A pack expansion contains a pattern, which itself contains one or more "unexpanded" parameter packs. When instantiated, a pack expansion produces a series of types, each instantiated from the pattern of the expansion, where the Ith instantiation of the pattern uses the Ith arguments bound to each of the unexpanded parameter packs. The pack expansion is considered to "expand" these unexpanded parameter packs.

 template<typename ...Types> struct tuple;

 template<typename ...Types>
 struct tuple_of_references {
   typedef tuple<Types&...> type;
 };

Here, the pack expansion Types&... is represented via a PackExpansionType whose pattern is Types&.

Definition at line 4230 of file Type.h.

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Member Function Documentation

static bool clang::PackExpansionType::classof

(

const Type *

T

)

[inline, static]

Definition at line 4283 of file Type.h.

References clang::Type::getTypeClass().

QualType clang::PackExpansionType::desugar

(

)

const [inline]

Definition at line 4269 of file Type.h.

Optional<unsigned> clang::PackExpansionType::getNumExpansions

(

)

const [inline]

Retrieve the number of expansions that this pack expansion will generate, if known.

Definition at line 4261 of file Type.h.

Referenced by clang::Sema::getTemplateArgumentPackExpansionPattern(), and clang::TreeTransform< Derived >::TransformFunctionTypeParams().

QualType clang::PackExpansionType::getPattern

(

)

const [inline]

Retrieve the pattern of this pack expansion, which is the type that will be repeatedly instantiated when instantiating the pack expansion itself.

Definition at line 4257 of file Type.h.

Referenced by DeduceTemplateArguments(), and clang::Sema::DeduceTemplateArguments().

bool clang::PackExpansionType::isSugared

(

)

const [inline]

Definition at line 4268 of file Type.h.

References clang::Type::isDependentType().

void clang::PackExpansionType::Profile

(

llvm::FoldingSetNodeID &

ID

)

[inline]

Definition at line 4271 of file Type.h.

Referenced by clang::ASTContext::getPackExpansionType().

static void clang::PackExpansionType::Profile	(	llvm::FoldingSetNodeID &	ID,
		QualType	Pattern,
		Optional< unsigned >	NumExpansions
	)		[inline, static]

Definition at line 4275 of file Type.h.

References clang::QualType::getAsOpaquePtr().

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Friends And Related Function Documentation

friend class ASTContext [friend]

Reimplemented from clang::Type.

Definition at line 4251 of file Type.h.

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

• Type.h