| /*************************************************************************** |
| * |
| * This is an internal header file used to implement the C++ Standard |
| * Library. It should never be #included directly by a program. |
| * |
| * $Id$ |
| * |
| *************************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed |
| * with this work for additional information regarding copyright |
| * ownership. The ASF licenses this file to you under the Apache |
| * License, Version 2.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| * |
| * Copyright 2008 Rogue Wave Software, Inc. |
| * |
| **************************************************************************/ |
| |
| #ifndef _RWSTD_RW_META_HELP_H_INCLUDED |
| #define _RWSTD_RW_META_HELP_H_INCLUDED |
| |
| #include <rw/_defs.h> |
| |
| _RWSTD_NAMESPACE (__rw) { |
| |
| // |
| // A compile-time integral constant wrapper. This class template |
| // encapsulates an integer constant value for metaprogramming. |
| // |
| template <class _TypeT, _TypeT _Value> |
| struct __rw_integral_constant |
| { |
| typedef __rw_integral_constant<_TypeT,_Value> type; |
| typedef _TypeT value_type; |
| |
| static const _TypeT value = _Value; |
| }; |
| |
| #ifndef _RWSTD_NO_STATIC_CONST_MEMBER_DEFINITION |
| |
| template<class _TypeT, _TypeT _Value> |
| const _TypeT __rw_integral_constant<_TypeT, _Value>::value; |
| |
| #endif // _RWSTD_NO_STATIC_CONST_MEMBER_DEFINITION |
| |
| // |
| // Synonym for __rw_integral_constant<bool, true> type. |
| // |
| typedef __rw_integral_constant<bool, true> __rw_true_type; |
| |
| // |
| // Synonym for __rw_integral_constant<bool, false> type. |
| // |
| typedef __rw_integral_constant<bool, false> __rw_false_type; |
| |
| // convenience macros |
| |
| #define _RWSTD_BOOL_CONST(B) _RW::__rw_integral_constant<bool, B> |
| |
| } // namespace __rw |
| |
| |
| #endif // _RWSTD_RW_META_HELP_H_INCLUDED |
| |