[completion] Add completions for @"..." and @(...), and tidy up @[] and @{}.

Specifically, @[] and @{} didn't have a type associated with them; we now
use "NSArray *" and "NSDictionary *", respectively. @"" has the type
"NSString *". @(), unfortunately, has type "id", since it (currently) may
be either an NSNumber or an NSString.

Add a test for all the Objective-C at-expression completions.

<rdar://problem/11507708&11507668&11507711>

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158533 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 20 insertions, 2 deletions

diff --git a/lib/Sema/SemaCodeComplete.cpp b/lib/Sema/SemaCodeComplete.cpp
index ca5ee3b226..bfe9fea058 100644
--- a/lib/Sema/SemaCodeComplete.cpp
+++ b/lib/Sema/SemaCodeComplete.cpp
@@ -4411,7 +4411,7 @@ static void AddObjCExpressionResults(ResultBuilder &Results, bool NeedAt) {
   const char *EncodeType = "char[]";
   if (Results.getSema().getLangOpts().CPlusPlus ||
       Results.getSema().getLangOpts().ConstStrings)
-    EncodeType = " const char[]";
+    EncodeType = "const char[]";
   Builder.AddResultTypeChunk(EncodeType);
   Builder.AddTypedTextChunk(OBJC_AT_KEYWORD_NAME(NeedAt,"encode"));
   Builder.AddChunk(CodeCompletionString::CK_LeftParen);
@@ -4434,8 +4434,16 @@ static void AddObjCExpressionResults(ResultBuilder &Results, bool NeedAt) {
   Builder.AddPlaceholderChunk("selector");
   Builder.AddChunk(CodeCompletionString::CK_RightParen);
   Results.AddResult(Result(Builder.TakeString()));
-  
+
+  // @"string"
+  Builder.AddResultTypeChunk("NSString *");
+  Builder.AddTypedTextChunk(OBJC_AT_KEYWORD_NAME(NeedAt,"\""));
+  Builder.AddPlaceholderChunk("string");
+  Builder.AddTextChunk("\"");
+  Results.AddResult(Result(Builder.TakeString()));
+
   // @[ objects, ... ]
+  Builder.AddResultTypeChunk("NSArray *");
   Builder.AddTypedTextChunk(OBJC_AT_KEYWORD_NAME(NeedAt,"["));
   Builder.AddChunk(CodeCompletionString::CK_HorizontalSpace);
   Builder.AddPlaceholderChunk("objects, ...");
@@ -4444,6 +4452,7 @@ static void AddObjCExpressionResults(ResultBuilder &Results, bool NeedAt) {
   Results.AddResult(Result(Builder.TakeString()));
 
   // @{ key : object, ... }
+  Builder.AddResultTypeChunk("NSDictionary *");
   Builder.AddTypedTextChunk(OBJC_AT_KEYWORD_NAME(NeedAt,"{"));
   Builder.AddChunk(CodeCompletionString::CK_HorizontalSpace);
   Builder.AddPlaceholderChunk("key");
@@ -4454,6 +4463,15 @@ static void AddObjCExpressionResults(ResultBuilder &Results, bool NeedAt) {
   Builder.AddChunk(CodeCompletionString::CK_HorizontalSpace);
   Builder.AddChunk(CodeCompletionString::CK_RightBrace);
   Results.AddResult(Result(Builder.TakeString()));
+
+  // @( expression )
+  Builder.AddResultTypeChunk("id");
+  Builder.AddTypedTextChunk(OBJC_AT_KEYWORD_NAME(NeedAt, "("));
+  Builder.AddChunk(CodeCompletionString::CK_HorizontalSpace);
+  Builder.AddPlaceholderChunk("expression");
+  Builder.AddChunk(CodeCompletionString::CK_HorizontalSpace);
+  Builder.AddChunk(CodeCompletionString::CK_RightParen);
+  Results.AddResult(Result(Builder.TakeString()));
 }
 
 static void AddObjCStatementResults(ResultBuilder &Results, bool NeedAt) {