[libclang] Support code-completion inside macro arguments.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137973 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/include/clang/Lex/CodeCompletionHandler.h b/include/clang/Lex/CodeCompletionHandler.h
index d28a3aa7d6..d876776c92 100644
--- a/include/clang/Lex/CodeCompletionHandler.h
+++ b/include/clang/Lex/CodeCompletionHandler.h
@@ -52,6 +52,10 @@ public:
   
   /// \brief Callback invoked when performing code completion inside a 
   /// function-like macro argument.
+  ///
+  /// There will be another callback invocation after the macro arguments are
+  /// parsed, so this callback should generally be used to note that the next
+  /// callback is invoked inside a macro argument.
   virtual void CodeCompleteMacroArgument(IdentifierInfo *Macro,
                                          MacroInfo *MacroInfo,
                                          unsigned ArgumentIndex) { }