[libclang] Introduce clang_File_isEqual for comparing CXFile handles.

llvm-svn: 215796

2 files changed, 13 insertions, 0 deletions

diff --git a/clang/tools/libclang/CIndex.cpp b/clang/tools/libclang/CIndex.cpp
index 716f79ac33e..97a27591cf7 100644
--- a/clang/tools/libclang/CIndex.cpp
+++ b/clang/tools/libclang/CIndex.cpp
@@ -3283,6 +3283,18 @@ int clang_getFileUniqueID(CXFile file, CXFileUniqueID *outID) {
   return 0;
 }
 
+int clang_File_isEqual(CXFile file1, CXFile file2) {
+  if (file1 == file2)
+    return true;
+
+  if (!file1 || !file2)
+    return false;
+
+  FileEntry *FEnt1 = static_cast<FileEntry *>(file1);
+  FileEntry *FEnt2 = static_cast<FileEntry *>(file2);
+  return FEnt1->getUniqueID() == FEnt2->getUniqueID();
+}
+
 } // end: extern "C"
 
 //===----------------------------------------------------------------------===//
diff --git a/clang/tools/libclang/libclang.exports b/clang/tools/libclang/libclang.exports
index ad0d585c850..5a029f7e4f9 100644
--- a/clang/tools/libclang/libclang.exports
+++ b/clang/tools/libclang/libclang.exports
@@ -25,6 +25,7 @@ clang_Cursor_isNull
 clang_Cursor_isObjCOptional
 clang_Cursor_isVariadic
 clang_Cursor_getModule
+clang_File_isEqual
 clang_Module_getASTFile
 clang_Module_getParent
 clang_Module_getName