From: Douglas Gregor <dgregor@apple.com>
Date: Tue, 15 Feb 2011 19:17:31 +0000 (+0000)
Subject: When we encounter an Objective-C class name in an expression, followed
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=97d7ff0e514793cb305a1595914f3c91833b4d8f;p=clang

When we encounter an Objective-C class name in an expression, followed
by the code completion token, treat this as a class message send where
the opening square bracket is missing. Fixes <rdar://problem/6970911>.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@125587 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Parse/ParseExpr.cpp b/lib/Parse/ParseExpr.cpp
index 55d2ba222f..4113c4fac2 100644
--- a/lib/Parse/ParseExpr.cpp
+++ b/lib/Parse/ParseExpr.cpp
@@ -669,12 +669,17 @@ ExprResult Parser::ParseCastExpression(bool isUnaryExpression,
       break;
     }
     
-    // If we have an Objective-C class name followed by an identifier and
-    // either ':' or ']', this is an Objective-C class message send that's
-    // missing the opening '['. Recovery appropriately.
-    if (getLang().ObjC1 && Tok.is(tok::identifier) && !InMessageExpression) {
+    // If we have an Objective-C class name followed by an identifier
+    // and either ':' or ']', this is an Objective-C class message
+    // send that's missing the opening '['. Recovery
+    // appropriately. Also take this path if we're performing code
+    // completion after an Objective-C class name.
+    if (getLang().ObjC1 && 
+        ((Tok.is(tok::identifier) && !InMessageExpression) || 
+         Tok.is(tok::code_completion))) {
       const Token& Next = NextToken();
-      if (Next.is(tok::colon) || Next.is(tok::r_square))
+      if (Tok.is(tok::code_completion) || 
+          Next.is(tok::colon) || Next.is(tok::r_square))
         if (ParsedType Typ = Actions.getTypeName(II, ILoc, getCurScope()))
           if (Typ.get()->isObjCObjectOrInterfaceType()) {
             // Fake up a Declarator to use with ActOnTypeName.
diff --git a/test/Index/complete-objc-message.m b/test/Index/complete-objc-message.m
index 4e662b32ec..0658d53c65 100644
--- a/test/Index/complete-objc-message.m
+++ b/test/Index/complete-objc-message.m
@@ -171,6 +171,10 @@ void test_redundancy(C *c) {
 }
 @end
 
+void test_missing_open_more() {
+  A *a = A class_method3];
+}
+
 // RUN: c-index-test -code-completion-at=%s:23:19 %s | FileCheck -check-prefix=CHECK-CC1 %s
 // CHECK-CC1: {TypedText categoryClassMethod}
 // CHECK-CC1: {TypedText classMethod1:}{Placeholder (id)}{HorizontalSpace  }{TypedText withKeyword:}{Placeholder (int)}
@@ -294,3 +298,4 @@ void test_redundancy(C *c) {
 // RUN: c-index-test -code-completion-at=%s:141:23 %s | FileCheck -check-prefix=CHECK-CCD %s
 // RUN: c-index-test -code-completion-at=%s:141:30 %s | FileCheck -check-prefix=CHECK-CCE %s
 
+// RUN: c-index-test -code-completion-at=%s:175:12 %s | FileCheck -check-prefix=CHECK-CLASS-RESULT %s