Substantially alter the design of the Objective C type AST by introducing

ObjCObjectType, which is basically just a pair of
  one of {primitive-id, primitive-Class, user-defined @class}
with
  a list of protocols.
An ObjCObjectPointerType is therefore just a pointer which always points to
one of these types (possibly sugared).  ObjCInterfaceType is now just a kind
of ObjCObjectType which happens to not carry any protocols.

Alter a rather large number of use sites to use ObjCObjectType instead of
ObjCInterfaceType.  Store an ObjCInterfaceType as a pointer on the decl rather
than hashing them in a FoldingSet.  Remove some number of methods that are no
longer used, at least after this patch.

By simplifying ObjCObjectPointerType, we are now able to easily remove and apply
pointers to Objective-C types, which is crucial for a certain kind of ObjC++
metaprogramming common in WebKit.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@103870 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 3 insertions, 0 deletions

diff --git a/tools/libclang/CXTypes.cpp b/tools/libclang/CXTypes.cpp
index 28dc12a344..137370adb2 100644
--- a/tools/libclang/CXTypes.cpp
+++ b/tools/libclang/CXTypes.cpp
@@ -173,6 +173,9 @@ CXCursor clang_getTypeDeclaration(CXType CT) {
     case Type::Typedef:
       D = cast<TypedefType>(TP)->getDecl();
       break;
+    case Type::ObjCObject:
+      D = cast<ObjCObjectType>(TP)->getInterface();
+      break;
     case Type::ObjCInterface:
       D = cast<ObjCInterfaceType>(TP)->getDecl();
       break;