1 files changed, 52 insertions, 0 deletions
diff --git a/clang/lib/Sema/IdentifierResolver.h b/clang/lib/Sema/IdentifierResolver.h
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+++ b/clang/lib/Sema/IdentifierResolver.h
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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