Introduce the 'Index' library.
Its purpose is to provide the basic infrastructure for cross-translation-unit analysis like indexing, refactoring, etc.
Currently it is very "primitive" and with no type-names support. It can provide functionality like
"show me all references of this function from these translation units".
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74802 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Index/ProgramImpl.h b/lib/Index/ProgramImpl.h
new file mode 100644
index 0000000..52f153f
--- /dev/null
+++ b/lib/Index/ProgramImpl.h
@@ -0,0 +1,53 @@
+//===--- 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 "clang/Index/Entity.h"
+#include "llvm/ADT/StringSet.h"
+
+namespace clang {
+
+namespace idx {
+ class EntityListener;
+
+class ProgramImpl {
+public:
+ typedef llvm::FoldingSet<Entity> EntitySetTy;
+ typedef llvm::StringMapEntry<char> IdEntryTy;
+
+private:
+ llvm::FoldingSet<Entity> Entities;
+ llvm::StringSet<> Idents;
+ llvm::BumpPtrAllocator BumpAlloc;
+
+ ProgramImpl(const ProgramImpl&); // do not implement
+ ProgramImpl &operator=(const ProgramImpl &); // do not implement
+
+public:
+ ProgramImpl() { }
+
+ llvm::FoldingSet<Entity> &getEntities() { return Entities; }
+ llvm::StringSet<> &getIdents() { return Idents; }
+
+ void *Allocate(unsigned Size, unsigned Align = 8) {
+ return BumpAlloc.Allocate(Size, Align);
+ }
+};
+
+} // namespace idx
+
+} // namespace clang
+
+#endif