1 files changed, 9 insertions, 0 deletions
diff --git a/include/clang/AST/ExternalASTSource.h b/include/clang/AST/ExternalASTSource.h
index 4219bd507a90..6f862a55d4ba 100644
--- a/include/clang/AST/ExternalASTSource.h
+++ b/include/clang/AST/ExternalASTSource.h
@@ -18,6 +18,7 @@
 #include "clang/AST/Type.h"
 #include "llvm/ADT/SmallVector.h"
 #include <cassert>
+#include <vector>
 namespace clang {
 
 class ASTConsumer;
@@ -57,6 +58,14 @@ public:
 
   virtual ~ExternalASTSource();
 
+  /// \brief Reads the source ranges that correspond to comments from
+  /// an external AST source.
+  ///
+  /// \param Comments the contents of this vector will be
+  /// replaced with the sorted set of source ranges corresponding to
+  /// comments in the source code.
+  virtual void ReadComments(std::vector<SourceRange> &Comments) = 0;
+  
   /// \brief Resolve a type ID into a type, potentially building a new
   /// type.
   virtual QualType GetType(uint32_t ID) = 0;