[ceph.git] / ceph / src / rocksdb / util / cast_util.h

//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
//  This source code is licensed under both the GPLv2 (found in the
//  COPYING file in the root directory) and Apache 2.0 License
//  (found in the LICENSE.Apache file in the root directory).

#pragma once

namespace ROCKSDB_NAMESPACE {
// The helper function to assert the move from dynamic_cast<> to
// static_cast<> is correct. This function is to deal with legacy code.
// It is not recommanded to add new code to issue class casting. The preferred
// solution is to implement the functionality without a need of casting.
template <class DestClass, class SrcClass>
inline DestClass* static_cast_with_check(SrcClass* x) {
  DestClass* ret = static_cast<DestClass*>(x);
#ifdef ROCKSDB_USE_RTTI
  assert(ret == dynamic_cast<DestClass*>(x));
#endif
  return ret;
}
}  // namespace ROCKSDB_NAMESPACE
Commit	Line	Data
11fdf7f2 TL	1	// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
	2	// This source code is licensed under both the GPLv2 (found in the
	3	// COPYING file in the root directory) and Apache 2.0 License
	4	// (found in the LICENSE.Apache file in the root directory).
	5
	6	#pragma once
	7
f67539c2	8	namespace ROCKSDB_NAMESPACE {
11fdf7f2 TL	9	// The helper function to assert the move from dynamic_cast<> to
	10	// static_cast<> is correct. This function is to deal with legacy code.
	11	// It is not recommanded to add new code to issue class casting. The preferred
	12	// solution is to implement the functionality without a need of casting.
	13	template <class DestClass, class SrcClass>
	14	inline DestClass* static_cast_with_check(SrcClass* x) {
	15	DestClass* ret = static_cast<DestClass*>(x);
	16	#ifdef ROCKSDB_USE_RTTI
	17	assert(ret == dynamic_cast<DestClass*>(x));
	18	#endif
	19	return ret;
	20	}
f67539c2	21	} // namespace ROCKSDB_NAMESPACE