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//===- IdentifierResolver.h - Lexical Scope Name lookup ---------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the IdentifierResolver class,which is used for lexical
// scoped lookup, based on identifier.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_SEMA_IDENTIFIERRESOLVER_H
#define LLVM_CLANG_AST_SEMA_IDENTIFIERRESOLVER_H
namespace clang {
class IdentifierInfo;
class NamedDecl;
class Scope;
/// IdentifierResolver - Keeps track of shadowed decls on enclosing scopes.
/// it manages the shadowing chains of identifiers and implements efficent decl
/// lookup based on an identifier.
class IdentifierResolver {
public:
IdentifierResolver();
~IdentifierResolver();
/// AddDecl - Link the decl to its shadowed decl chain
void AddDecl(NamedDecl *D, Scope *S);
/// AddGlobalDecl - Link the decl at the top of the shadowed decl chain
void AddGlobalDecl(NamedDecl *D);
/// RemoveDecl - Unlink the decl from its shadowed decl chain
/// The decl must already be part of the decl chain.
void RemoveDecl(NamedDecl *D);
/// Lookup - Find the non-shadowed decl that belongs to a particular
/// Decl::IdentifierNamespace.
NamedDecl *Lookup(const IdentifierInfo *II, unsigned NSI);
private:
class IdDeclInfoMap;
IdDeclInfoMap &IdDeclInfos;
};
} // end namespace clang
#endif
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