[libclang] Introduce clang_Cursor_getReceiverType which returns the CXType for

the receiver of an ObjC message expression.

rdar://12578643

llvm-svn: 167201

2 files changed, 14 insertions, 0 deletions

diff --git a/clang/tools/libclang/CXCursor.cpp b/clang/tools/libclang/CXCursor.cpp
index ce517023f40..8d3e1690edc 100644
--- a/clang/tools/libclang/CXCursor.cpp
+++ b/clang/tools/libclang/CXCursor.cpp
@@ -15,6 +15,7 @@
 
 #include "CXTranslationUnit.h"
 #include "CXCursor.h"
+#include "CXType.h"
 #include "CXString.h"
 #include "clang/Frontend/ASTUnit.h"
 #include "clang/AST/Decl.h"
@@ -1172,4 +1173,16 @@ int clang_Cursor_isDynamicCall(CXCursor C) {
   return 0;
 }
 
+CXType clang_Cursor_getReceiverType(CXCursor C) {
+  CXTranslationUnit TU = cxcursor::getCursorTU(C);
+  const Expr *E = 0;
+  if (clang_isExpression(C.kind))
+    E = getCursorExpr(C);
+
+  if (const ObjCMessageExpr *MsgE = dyn_cast_or_null<ObjCMessageExpr>(E))
+    return cxtype::MakeCXType(MsgE->getReceiverType(), TU);
+
+  return cxtype::MakeCXType(QualType(), TU);
+}
+
 } // end: extern "C"
diff --git a/clang/tools/libclang/libclang.exports b/clang/tools/libclang/libclang.exports
index ec77fafa7b6..4495b66bdc1 100644
--- a/clang/tools/libclang/libclang.exports
+++ b/clang/tools/libclang/libclang.exports
@@ -13,6 +13,7 @@ clang_Cursor_getNumArguments
 clang_Cursor_getObjCSelectorIndex
 clang_Cursor_getSpellingNameRange
 clang_Cursor_getTranslationUnit
+clang_Cursor_getReceiverType
 clang_Cursor_isDynamicCall
 clang_Cursor_isNull
 clang_Cursor_getModule