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author | samantharitter <samantha.ritter@10gen.com> | 2016-03-02 17:06:51 -0500 |
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committer | samantharitter <samantha.ritter@10gen.com> | 2016-03-10 18:01:57 -0500 |
commit | 25f28a35d6a02a11c39c0be454169fc93baf4bf9 (patch) | |
tree | 12473cdd1ffcef021ba76494b5992eb8961094d0 /src/mongo/stdx | |
parent | 335e647e165950a080cb2a5effdab64abd898be0 (diff) | |
download | mongo-25f28a35d6a02a11c39c0be454169fc93baf4bf9.tar.gz |
SERVER-22686 Add C++14 enable_if_t to stdx
Diffstat (limited to 'src/mongo/stdx')
-rw-r--r-- | src/mongo/stdx/type_traits.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/mongo/stdx/type_traits.h b/src/mongo/stdx/type_traits.h new file mode 100644 index 00000000000..9fc95279b98 --- /dev/null +++ b/src/mongo/stdx/type_traits.h @@ -0,0 +1,56 @@ +/** + * Copyright (C) 2016 MongoDB Inc. + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU Affero General Public License, version 3, + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * As a special exception, the copyright holders give permission to link the + * code of portions of this program with the OpenSSL library under certain + * conditions as described in each individual source file and distribute + * linked combinations including the program with the OpenSSL library. You + * must comply with the GNU Affero General Public License in all respects for + * all of the code used other than as permitted herein. If you modify file(s) + * with this exception, you may extend this exception to your version of the + * file(s), but you are not obligated to do so. If you do not wish to do so, + * delete this exception statement from your version. If you delete this + * exception statement from all source files in the program, then also delete + * it in the license file. + */ + +#pragma once + +#include <type_traits> + +#include "mongo/config.h" + +#if defined(MONGO_CONFIG_HAVE_STD_ENABLE_IF_T) + +namespace mongo { +namespace stdx { + +using ::std::enable_if_t; + +} // namespace stdx +} // namespace mongo + +#else + +namespace mongo { +namespace stdx { + +template <bool B, class T = void> +using enable_if_t = typename std::enable_if<B, T>::type; + +} // namespace stdx +} // namespace mongo + +#endif |