Check in LLVM r95781.
diff --git a/lib/Index/ProgramImpl.h b/lib/Index/ProgramImpl.h
new file mode 100644
index 0000000..57b9ce3
--- /dev/null
+++ b/lib/Index/ProgramImpl.h
@@ -0,0 +1,56 @@
+//===--- ProgramImpl.h - Internal Program implementation---------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Internal implementation for the Program class
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_INDEX_PROGRAMIMPL_H
+#define LLVM_CLANG_INDEX_PROGRAMIMPL_H
+
+#include "EntityImpl.h"
+#include "clang/Basic/IdentifierTable.h"
+#include "clang/Basic/LangOptions.h"
+
+namespace clang {
+
+namespace idx {
+ class EntityListener;
+
+class ProgramImpl {
+public:
+ typedef llvm::FoldingSet<EntityImpl> EntitySetTy;
+
+private:
+ EntitySetTy Entities;
+ llvm::BumpPtrAllocator BumpAlloc;
+
+ IdentifierTable Identifiers;
+ SelectorTable Selectors;
+
+ ProgramImpl(const ProgramImpl&); // do not implement
+ ProgramImpl &operator=(const ProgramImpl &); // do not implement
+
+public:
+ ProgramImpl() : Identifiers(LangOptions()) { }
+
+ EntitySetTy &getEntities() { return Entities; }
+ IdentifierTable &getIdents() { return Identifiers; }
+ SelectorTable &getSelectors() { return Selectors; }
+
+ void *Allocate(unsigned Size, unsigned Align = 8) {
+ return BumpAlloc.Allocate(Size, Align);
+ }
+};
+
+} // namespace idx
+
+} // namespace clang
+
+#endif