Add support for Microsoft __if_exists, __if_not_exists extension at class scope.

Example:

typedef int TYPE;
class C {
  __if_exists(TYPE) {
     TYPE a;
  }
  __if_not_exists(TYPE) {
     this will never be parsed.
  }
};

llvm-svn: 132052

1 files changed, 26 insertions, 1 deletions

diff --git a/clang/test/Parser/MicrosoftExtensions.cpp b/clang/test/Parser/MicrosoftExtensions.cpp
index adf93b62d1a..3a72ea0234c 100644
--- a/clang/test/Parser/MicrosoftExtensions.cpp
+++ b/clang/test/Parser/MicrosoftExtensions.cpp
@@ -168,7 +168,7 @@ __interface MicrosoftInterface {
 __int64 x7 = __int64(0);
 
 
-
+namespace If_exists_test {
 
 class IF_EXISTS {
 private:
@@ -210,6 +210,31 @@ __if_not_exists(IF_EXISTS::Type_not) {
   int var244;
 }
 
+class IF_EXISTS_CLASS_TEST {
+  __if_exists(IF_EXISTS::Type) {
+    // __if_exists, __if_not_exists can nest
+    __if_not_exists(IF_EXISTS::Type_not) {
+      int var123;
+    }
+    int var23;
+  }
+
+  __if_exists(IF_EXISTS::Type_not) {
+   this wont compile.
+  }
+
+  __if_not_exists(IF_EXISTS::Type) {
+   this wont compile.
+  }
+
+  __if_not_exists(IF_EXISTS::Type_not) {
+    int var244;
+  }
+};
+
+}
+
+
 int __identifier(generic) = 3;
 
 class inline_definition_pure_spec {