[Parse] Document Parser::SkipFunctionBodies

Reviewers: erikjv, doug.gregor

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D36531

llvm-svn: 310627

clang/include/clang/Parse/Parser.h

@@ -253,6 +253,10 @@ class Parser : public CodeCompletionHandler {
   /// be NULL.
   bool ParsingInObjCContainer;
 
+  /// Whether to skip parsing of function bodies.
+  ///
+  /// This option can be used, for example, to speed up searches for
+  /// delcarations/definitions when indexing.
   bool SkipFunctionBodies;
 
   /// The location of the expression statement that is being parsed right now.