A dynamically typed AST node container. More...

#include "clang/AST/ASTTypeTraits.h"

Classes
struct	BaseConverter< CXXBaseSpecifier, void >

struct	BaseConverter< CXXCtorInitializer, void >

struct	BaseConverter< NestedNameSpecifier, void >

struct	BaseConverter< NestedNameSpecifierLoc, void >

struct	BaseConverter< QualType, void >

struct	BaseConverter< T, std::enable_if_t< std::is_base_of< Decl, T >::value > >

struct	BaseConverter< T, std::enable_if_t< std::is_base_of< OMPClause, T >::value > >

struct	BaseConverter< T, std::enable_if_t< std::is_base_of< Stmt, T >::value > >

struct	BaseConverter< T, std::enable_if_t< std::is_base_of< Type, T >::value > >

struct	BaseConverter< TemplateArgument, void >

struct	BaseConverter< TemplateArgumentLoc, void >

struct	BaseConverter< TemplateName, void >

struct	BaseConverter< TypeLoc, void >

struct	DenseMapInfo
	Hooks for using DynTypedNode as a key in a DenseMap. More...

Public Member Functions
template<typename T >
const T *	get () const
	Retrieve the stored node as type `T`. More...

template<typename T >
const T &	getUnchecked () const
	Retrieve the stored node as type `T`. More...

ASTNodeKind	getNodeKind () const

const void *	getMemoizationData () const
	Returns a pointer that identifies the stored AST node. More...

void	print (llvm::raw_ostream &OS, const PrintingPolicy &PP) const
	Prints the node to the given output stream. More...

void	dump (llvm::raw_ostream &OS, const ASTContext &Context) const
	Dumps the node to the given output stream. More...

SourceRange	getSourceRange () const
	For nodes which represent textual entities in the source code, return their SourceRange. More...


bool	operator< (const DynTypedNode &Other) const

bool	operator== (const DynTypedNode &Other) const

bool	operator!= (const DynTypedNode &Other) const

Static Public Member Functions
template<typename T >
static DynTypedNode	create (const T &Node)
	Creates a `DynTypedNode` from `Node`. More...

Detailed Description

A dynamically typed AST node container.

Stores an AST node in a type safe way. This allows writing code that works with different kinds of AST nodes, despite the fact that they don't have a common base class.

Use create(Node) to create a DynTypedNode from an AST node, and get<T>() to retrieve the node as type T if the types match.

See ASTNodeKind for which node base types are currently supported; You can create DynTypedNodes for all nodes in the inheritance hierarchy of the supported base types.

Definition at line 233 of file ASTTypeTraits.h.

Member Function Documentation

◆ create()

template<typename T >

static DynTypedNode clang::DynTypedNode::create ( const T & Node )

inlinestatic

Creates a DynTypedNode from Node.

Definition at line 237 of file ASTTypeTraits.h.

References clang::serialized_diags::create(), and Node.

Referenced by clang::ast_matchers::AST_POLYMORPHIC_MATCHER_P(), createDynTypedNode(), clang::ParentMapContext::getParents(), clang::ast_matchers::MatchFinder::match(), and clang::ParentMapContext::traverseIgnored().

◆ dump()

void DynTypedNode::dump	(	llvm::raw_ostream &	OS,
		const ASTContext &	Context
	)		const

Dumps the node to the given output stream.

Definition at line 169 of file ASTTypeTraits.cpp.

◆ get()

template<typename T >

const T* clang::DynTypedNode::get ( ) const

inline

Retrieve the stored node as type T.

Returns NULL if the stored node does not have a type that is convertible to T.

For types that have identity via their pointer in the AST (like Stmt, Decl, Type and NestedNameSpecifier) the returned pointer points to the referenced AST node. For other types (like QualType) the value is stored directly in the DynTypedNode, and the returned pointer points at the storage inside DynTypedNode. For those nodes, do not use the pointer outside the scope of the DynTypedNode.

Definition at line 253 of file ASTTypeTraits.h.

Referenced by dump(), clang::tooling::CodeRangeASTSelection::getFunctionLikeNearestParent(), clang::CallGraph::getOrInsertNode(), clang::tooling::CodeRangeASTSelection::isInFunctionLikeBodyOfCode(), clang::transformer::member(), clang::transformer::name(), clang::transformer::node(), clang::transformer::detail::rewriteDescendants(), clang::ParentMapContext::traverseIgnored(), clang::ASTNodeTraverser< ASTDumper, TextNodeDumper >::Visit(), and clang::ParentMapContext::ParentMap::~ParentMap().

◆ getMemoizationData()

const void* clang::DynTypedNode::getMemoizationData ( ) const

inline

Returns a pointer that identifies the stored AST node.

Note that this is not supported by all AST nodes. For AST nodes that don't have a pointer-defined identity inside the AST, this method returns NULL.

Definition at line 272 of file ASTTypeTraits.h.

References clang::ASTNodeKind::hasPointerIdentity().

Referenced by clang::DynTypedNode::DenseMapInfo::getHashValue(), operator<(), and operator==().

◆ getNodeKind()

ASTNodeKind clang::DynTypedNode::getNodeKind ( ) const

inline

Definition at line 265 of file ASTTypeTraits.h.

Referenced by clang::transformer::member(), clang::transformer::name(), and clang::transformer::detail::rewriteDescendants().

◆ getSourceRange()

SourceRange DynTypedNode::getSourceRange ( ) const

For nodes which represent textual entities in the source code, return their SourceRange.

For all other nodes, return SourceRange().

Definition at line 181 of file ASTTypeTraits.cpp.

Referenced by clang::transformer::node(), and clang::TextNodeDumper::Visit().

◆ getUnchecked()

template<typename T >

const T& clang::DynTypedNode::getUnchecked ( ) const

inline

Retrieve the stored node as type T.

Similar to get(), but asserts that the type is what we are expecting.

Definition at line 261 of file ASTTypeTraits.h.

Referenced by clang::DynTypedNode::DenseMapInfo::getHashValue(), operator<(), and operator==().

◆ operator!=()

bool clang::DynTypedNode::operator!= ( const DynTypedNode & Other ) const

inline

Definition at line 344 of file ASTTypeTraits.h.

References operator==().

◆ operator<()

bool clang::DynTypedNode::operator< ( const DynTypedNode & Other ) const

inline

Imposes an order on DynTypedNode.

Supports comparison of nodes that support memoization. FIXME: Implement comparison for other node types (currently only Stmt, Decl, Type and NestedNameSpecifier return memoization data).

Definition at line 294 of file ASTTypeTraits.h.

References getMemoizationData(), getUnchecked(), and clang::ASTNodeKind::isSame().