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//===--- DeclReferenceMap.h - Map Decls to their references -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// DeclReferenceMap creates a mapping from Decls to the ASTNodes that
// reference them.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_DECLREFERENCEMAP_H
#define LLVM_CLANG_AST_DECLREFERENCEMAP_H
#include "clang/AST/ASTNode.h"
#include <map>
namespace clang {
class ASTContext;
class NamedDecl;
/// \brief Maps NamedDecls with the ASTNodes that reference them.
///
/// References are mapped and retrieved using the primary decls
/// (see Decl::getPrimaryDecl()).
class DeclReferenceMap {
public:
explicit DeclReferenceMap(ASTContext &Ctx);
typedef std::multimap<NamedDecl*, ASTNode> MapTy;
class astnode_iterator {
MapTy::iterator I;
astnode_iterator(MapTy::iterator i) : I(i) { }
friend class DeclReferenceMap;
public:
typedef ASTNode value_type;
typedef ASTNode& reference;
typedef ASTNode* pointer;
typedef MapTy::iterator::iterator_category iterator_category;
typedef MapTy::iterator::difference_type difference_type;
astnode_iterator() { }
reference operator*() const { return I->second; }
pointer operator->() const { return &I->second; }
astnode_iterator& operator++() {
++I;
return *this;
}
astnode_iterator operator++(int) {
astnode_iterator tmp(*this);
++(*this);
return tmp;
}
friend bool operator==(astnode_iterator L, astnode_iterator R) {
return L.I == R.I;
}
friend bool operator!=(astnode_iterator L, astnode_iterator R) {
return L.I != R.I;
}
};
astnode_iterator refs_begin(NamedDecl *D) const;
astnode_iterator refs_end(NamedDecl *D) const;
bool refs_empty(NamedDecl *D) const;
private:
mutable MapTy Map;
};
} // end clang namespace
#endif
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