two new files for previous patch, by Argiris Kirtzidis
llvm-svn: 49521
diff --git a/clang/lib/Sema/IdentifierResolver.h b/clang/lib/Sema/IdentifierResolver.h
new file mode 100644
index 0000000..8db4615
--- /dev/null
+++ b/clang/lib/Sema/IdentifierResolver.h
@@ -0,0 +1,52 @@
+//===- 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