r181093 - Added a function to check whether a Decl is in

[Sean Callanan]

Author: spyffe
Date: Fri May  3 21:04:27 2013
New Revision: 181093

URL: http://llvm.org/viewvc/llvm-project?rev=181093&view=rev
Log:
Added a function to check whether a Decl is in
the list of Decls for a given DeclContext.  This
is useful for LLDB's implementation of
FindExternalLexicalDecls.

Modified:
    cfe/trunk/include/clang/AST/DeclBase.h
    cfe/trunk/lib/AST/DeclBase.cpp

Modified: cfe/trunk/include/clang/AST/DeclBase.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/DeclBase.h?rev=181093&r1=181092&r2=181093&view=diff
==============================================================================
--- cfe/trunk/include/clang/AST/DeclBase.h (original)
+++ cfe/trunk/include/clang/AST/DeclBase.h Fri May  3 21:04:27 2013
@@ -1412,6 +1412,9 @@ public:
 
   /// @brief Removes a declaration from this context.
   void removeDecl(Decl *D);
+    
+  /// @brief Checks whether a declaration is in this context.
+  bool containsDecl(Decl *D) const;
 
   /// lookup_iterator - An iterator that provides access to the results
   /// of looking up a name within this context.

Modified: cfe/trunk/lib/AST/DeclBase.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/DeclBase.cpp?rev=181093&r1=181092&r2=181093&view=diff
==============================================================================
--- cfe/trunk/lib/AST/DeclBase.cpp (original)
+++ cfe/trunk/lib/AST/DeclBase.cpp Fri May  3 21:04:27 2013
@@ -1064,6 +1064,11 @@ bool DeclContext::decls_empty() const {
   return !FirstDecl;
 }
 
+bool DeclContext::containsDecl(Decl *D) const {
+  return (D->getLexicalDeclContext() == this &&
+          (D->NextInContextAndBits.getPointer() || D == LastDecl));
+}
+
 void DeclContext::removeDecl(Decl *D) {
   assert(D->getLexicalDeclContext() == this &&
          "decl being removed from non-lexical context");