MongoDB C++ Driver legacy-1.1.2
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unordered_set.h
1/* Copyright 2012 10gen Inc.
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#pragma once
17
18// We need to drag in a C++ header so we can examine __GXX_EXPERIMENTAL_CXX0X__ or
19// _LIBCPP_VERSION meaningfully. The <new> header is pretty lightweight, mostly unavoidable,
20// and almost certain to bring in the standard library configuration macros.
21#include <new>
22
23// NOTE(acm): Before gcc-4.7, __cplusplus is always defined to be 1, so we can't reliably
24// detect C++11 support by exclusively checking the value of __cplusplus. Additionaly, libc++,
25// whether in C++11 or C++03 mode, doesn't use TR1 and drops things into std instead.
26#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__) || defined(_LIBCPP_VERSION)
27
28#include <unordered_set>
29
30namespace mongo {
31
32using std::unordered_set;
33
34} // namespace mongo
35
36#elif defined(_MSC_VER) && _MSC_VER >= 1500
37
38#include <unordered_set>
39
40namespace mongo {
41
42#if _MSC_VER >= 1600 /* Visual Studio 2010+ */
43using std::unordered_set;
44#else
45using std::tr1::unordered_set;
46#endif
47
48} // namespace mongo
49
50#elif defined(__GNUC__)
51
52#include <tr1/unordered_set>
53
54namespace mongo {
55
56using std::tr1::unordered_set;
57
58} // namespace mongo
59
60#else
61#error "Compiler's standard library does not provide a C++ unordered_set implementation."
62#endif
Utility functions for parsing numbers from strings.
Definition compare_numbers.h:20