1 files changed, 32 insertions, 0 deletions
diff --git a/lib/AST/Comment.cpp b/lib/AST/Comment.cpp
index 4681d5a143..1520d13417 100644
--- a/lib/AST/Comment.cpp
+++ b/lib/AST/Comment.cpp
@@ -86,6 +86,38 @@ Comment::child_iterator Comment::child_end() const {
   llvm_unreachable("Unknown comment kind!");
 }
 
+bool TextComment::isWhitespace() const {
+  for (StringRef::const_iterator I = Text.begin(), E = Text.end();
+       I != E; ++I) {
+    const char C = *I;
+    if (C != ' ' && C != '\n' && C != '\r' &&
+        C != '\t' && C != '\f' && C != '\v')
+      return false;
+  }
+  return true;
+}
+
+bool ParagraphComment::isWhitespace() const {
+  for (child_iterator I = child_begin(), E = child_end(); I != E; ++I) {
+    if (const TextComment *TC = dyn_cast<TextComment>(*I)) {
+      if (!TC->isWhitespace())
+        return false;
+    }
+  }
+  return true;
+}
+
+const char *ParamCommandComment::getDirectionAsString(PassDirection D) {
+  switch (D) {
+  case ParamCommandComment::In:
+    return "[in]";
+  case ParamCommandComment::Out:
+    return "[out]";
+  case ParamCommandComment::InOut:
+    return "[in,out]";
+  }
+  llvm_unreachable("unknown PassDirection");
+}
 
 } // end namespace comments
 } // end namespace clang