Introduce ObjCProtocolListType type subclass.

This is used only for keeping detailed type source information for protocol references,
it should not participate in the semantics of the type system.

Its protocol list is not canonicalized.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@83093 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 23 insertions, 0 deletions

diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index e0223b009f..1fa492c874 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -551,6 +551,10 @@ ASTContext::getTypeInfo(const Type *T) {
     assert(false && "Should not see dependent types");
     break;
 
+  case Type::ObjCProtocolList:
+    assert(false && "Should not see protocol list types");
+    break;
+
   case Type::FunctionNoProto:
   case Type::FunctionProto:
     // GCC extension: alignof(function) = 32 bits
@@ -1989,6 +1993,25 @@ QualType ASTContext::getObjCInterfaceType(const ObjCInterfaceDecl *Decl,
   return QualType(QType, 0);
 }
 
+QualType ASTContext::getObjCProtocolListType(QualType T,
+                                             ObjCProtocolDecl **Protocols,
+                                             unsigned NumProtocols) {
+  llvm::FoldingSetNodeID ID;
+  ObjCProtocolListType::Profile(ID, T, Protocols, NumProtocols);
+
+  void *InsertPos = 0;
+  if (ObjCProtocolListType *QT =
+      ObjCProtocolListTypes.FindNodeOrInsertPos(ID, InsertPos))
+    return QualType(QT, 0);
+
+  // No Match;
+  ObjCProtocolListType *QType = new (*this, TypeAlignment)
+    ObjCProtocolListType(T, Protocols, NumProtocols);
+  Types.push_back(QType);
+  ObjCProtocolListTypes.InsertNode(QType, InsertPos);
+  return QualType(QType, 0);
+}
+
 /// getTypeOfExprType - Unlike many "get<Type>" functions, we can't unique
 /// TypeOfExprType AST's (since expression's are never shared). For example,
 /// multiple declarations that refer to "typeof(x)" all contain different