[libclang] Introduce clang_Cursor_getObjCSelectorIndex() function.

After getting a cursor with clang_getCursor for a particular source location,
allows querying the cursor in order to find out if the location points to a
selector identifier in an objc method or message expression, and which selector index it is.

rdar://11158946

llvm-svn: 153781

1 files changed, 14 insertions, 0 deletions

diff --git a/clang/include/clang-c/Index.h b/clang/include/clang-c/Index.h
index a65bb635b26..4568a764e0e 100644
--- a/clang/include/clang-c/Index.h
+++ b/clang/include/clang-c/Index.h
@@ -3001,6 +3001,20 @@ CINDEX_LINKAGE unsigned clang_isCursorDefinition(CXCursor);
  */
 CINDEX_LINKAGE CXCursor clang_getCanonicalCursor(CXCursor);
 
+
+/**
+ * \brief If the cursor points to a selector identifier in a objc method or
+ * message expression, this returns the selector index.
+ *
+ * After getting a cursor with \see clang_getCursor, this can be called to
+ * determine if the location points to a selector identifier.
+ *
+ * \returns The selector index if the cursor is an objc method or message
+ * expression and the cursor is pointing to a selector identifier, or -1
+ * otherwise.
+ */
+CINDEX_LINKAGE int clang_Cursor_getObjCSelectorIndex(CXCursor);
+
 /**
  * @}
  */