[cfe-dev] [PATCH] : Proper name lookup for namespaces

[Argiris Kirtzidis]

Hi,

The attached patch contains changes to support proper name lookup for 
namespaces.
It is mostly an overhaul of the IdentifierResolver:

-It exposes an iterator interface to get all decls through the scope chain:
  for (IdentifierResolver::iterator
       I = IdResolver.begin(II, CurContext), E = IdResolver.end(II); I 
!= E; ++I)
    if ((*I)->getIdentifierNamespace() & NS)
      return *I;

-The semantic staff (checking IdentifierNamespace and Doug's checking 
for shadowed tags were moved out of IdentifierResolver and back into 
Sema. IdentifierResolver just gives an iterator for iterating over all 
reachable decls of an identifier.

-Fixes bug: http://llvm.org/bugs/show_bug.cgi?id=2275


-Argiris
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