From: Douglas Gregor <dgregor@apple.com>
Date: Fri, 23 Sep 2011 19:19:41 +0000 (+0000)
Subject: Clean up parsing the category names in interfaces slightly, using
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=13d05ac08974ccb41f7da7595d769c158f58fbd6;p=clang

Clean up parsing the category names in interfaces slightly, using
MatchRHSPunctuation appropriately and giving a useful source location
for the complaint about attributes being added to a category.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140404 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Parse/ParseObjc.cpp b/lib/Parse/ParseObjc.cpp
index a9c2a755f9..1d60062602 100644
--- a/lib/Parse/ParseObjc.cpp
+++ b/lib/Parse/ParseObjc.cpp
@@ -164,9 +164,7 @@ Decl *Parser::ParseObjCAtInterfaceDeclaration(SourceLocation atLoc,
   SourceLocation nameLoc = ConsumeToken();
   if (Tok.is(tok::l_paren) && 
       !isKnownToBeTypeSpecifier(GetLookAheadToken(1))) { // we have a category.
-    // TODO(dgregor): Use the return value from the next line to provide better
-    // recovery.
-    ConsumeParen();
+    SourceLocation LParenLoc = ConsumeParen();
     SourceLocation categoryLoc, rparenLoc;
     IdentifierInfo *categoryId = 0;
     if (Tok.is(tok::code_completion)) {
@@ -184,12 +182,16 @@ Decl *Parser::ParseObjCAtInterfaceDeclaration(SourceLocation atLoc,
       Diag(Tok, diag::err_expected_ident); // missing category name.
       return 0;
     }
-    if (Tok.isNot(tok::r_paren)) {
-      Diag(Tok, diag::err_expected_rparen);
-      SkipUntil(tok::r_paren, false); // don't stop at ';'
+    
+    rparenLoc = MatchRHSPunctuation(tok::r_paren, LParenLoc);
+    if (rparenLoc.isInvalid())
       return 0;
+    
+    if (!attrs.empty()) { // categories don't support attributes.
+      Diag(nameLoc, diag::err_objc_no_attributes_on_category);
+      attrs.clear();
     }
-    rparenLoc = ConsumeParen();
+    
     // Next, we need to check for any protocol references.
     SourceLocation LAngleLoc, EndProtoLoc;
     SmallVector<Decl *, 8> ProtocolRefs;
@@ -199,9 +201,6 @@ Decl *Parser::ParseObjCAtInterfaceDeclaration(SourceLocation atLoc,
                                     LAngleLoc, EndProtoLoc))
       return 0;
 
-    if (!attrs.empty()) // categories don't support attributes.
-      Diag(Tok, diag::err_objc_no_attributes_on_category);
-
     Decl *CategoryType =
     Actions.ActOnStartCategoryInterface(atLoc,
                                         nameId, nameLoc,
diff --git a/test/SemaObjC/attr-deprecated.m b/test/SemaObjC/attr-deprecated.m
index d3d5f9537b..0152aca934 100644
--- a/test/SemaObjC/attr-deprecated.m
+++ b/test/SemaObjC/attr-deprecated.m
@@ -108,3 +108,7 @@ void test(Test2 *foo) {
   foo.test2 = x; // expected-warning {{'test2' is deprecated}}
   [foo setTest2: x]; // expected-warning {{'setTest2:' is deprecated}}
 }
+
+__attribute__((deprecated))
+@interface A(Blah) // expected-error{{attributes may not be specified on a category}}
+@end