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/* Copyright 2013 10gen Inc.
*
* Licensed 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.
*/
#pragma once
// NOTE(acm): Before gcc-4.7, __cplusplus is always defined to be 1,
// so we can't reliably detect C++11 support by exclusively checking
// the value of __cplusplus.
#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__)
#include <functional>
#define MONGO_HASH_NAMESPACE_START namespace std {
#define MONGO_HASH_NAMESPACE_END }
#define MONGO_HASH_NAMESPACE std
#elif defined(_MSC_VER) && _MSC_VER >= 1500
#if _MSC_VER >= 1600 /* Visual Studio 2010+ */
#include <functional>
#define MONGO_HASH_NAMESPACE_START namespace std {
#define MONGO_HASH_NAMESPACE_END }
#define MONGO_HASH_NAMESPACE std
#else /* Older Visual Studio */
#include <tr1/functional>
#define MONGO_HASH_NAMESPACE_START namespace std { namespace tr1 {
#define MONGO_HASH_NAMESPACE_END }}
#define MONGO_HASH_NAMESPACE std::tr1
#endif
#elif defined(__GNUC__)
#include <tr1/functional>
#define MONGO_HASH_NAMESPACE_START namespace std { namespace tr1 {
#define MONGO_HASH_NAMESPACE_END }}
#define MONGO_HASH_NAMESPACE std::tr1
#else
#error "Cannot determine namespace for 'hash'"
#endif
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