Fix <rdar://problem/6619539> incompatible pointer types sending 'XCElementSpacer *', expected 'XCElement *' (not handling protocol signatures correctly?).
- Reworked ASTContext::canAssignObjCInterfaces().
- Added ObjCProtocolDecl::lookupProtocolNamed().
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@65773 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/DeclObjC.cpp b/lib/AST/DeclObjC.cpp
index bdbcce7..4d2fcb6 100644
--- a/lib/AST/DeclObjC.cpp
+++ b/lib/AST/DeclObjC.cpp
@@ -412,6 +412,19 @@
ObjCContainerDecl::Destroy(C);
}
+ObjCProtocolDecl *ObjCProtocolDecl::lookupProtocolNamed(IdentifierInfo *Name) {
+ ObjCProtocolDecl *PDecl = this;
+
+ if (Name == getIdentifier())
+ return PDecl;
+
+ for (protocol_iterator I = protocol_begin(), E = protocol_end(); I != E; ++I)
+ if ((PDecl = (*I)->lookupProtocolNamed(Name)))
+ return PDecl;
+
+ return NULL;
+}
+
// lookupInstanceMethod - Lookup a instance method in the protocol and protocols
// it inherited.
ObjCMethodDecl *ObjCProtocolDecl::lookupInstanceMethod(Selector Sel) {