Add basic code completion support for ObjC messages.

Still a work in progress...


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@86323 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeCompletion/objc-message.m b/test/CodeCompletion/objc-message.m
new file mode 100644
index 0000000..d95a36d
--- /dev/null
+++ b/test/CodeCompletion/objc-message.m
@@ -0,0 +1,35 @@
+// Note: the run lines follow their respective tests, since line/column
+// matter in this test.
+
+@protocol FooTestProtocol
++ protocolClassMethod;
+- protocolInstanceMethod;
+@end
+@interface Foo <FooTestProtocol> {
+  void *isa;
+}
++ (int)classMethod1:a withKeyword:b;
++ (void)classMethod2;
++ new;
+- instanceMethod1;
+@end
+
+@interface Foo (FooTestCategory)
++ categoryClassMethod;
+- categoryInstanceMethod;
+@end
+
+void func() {
+  Foo *obj = [Foo new];
+  [obj xx];
+}
+// RUN: clang-cc -fsyntax-only -code-completion-at=%s:23:19 %s -o - | FileCheck -check-prefix=CHECK-CC1 %s &&
+// CHECK-CC1: categoryClassMethod : 0
+// CHECK-CC1: classMethod2 : 0
+// CHECK-CC1: new : 0
+// CHECK-CC1: protocolClassMethod : 0
+// CHECK-CC1: classMethod1:withKeyword: : 0
+// RUN: clang-cc -fsyntax-only -code-completion-at=%s:24:8 %s -o - | FileCheck -check-prefix=CHECK-CC2 %s
+// CHECK-CC2: categoryInstanceMethod : 0
+// CHECK-CC2: instanceMethod1 : 0
+// CHECK-CC2: protocolInstanceMethod : 0