Add: Optional implementation of std::optional for pre-C++17 compilers.
Sourced from https://github.com/akrzemi1/Optional, Boost Software License, Version 1.0.desync-debugging
Michael Lutz
4 years ago
parent
63ccb36ef3
commit
8aef14386f
@ -0,0 +1,23 @@
|
||||
Boost Software License - Version 1.0 - August 17th, 2003
|
||||
|
||||
Permission is hereby granted, free of charge, to any person or organization
|
||||
obtaining a copy of the software and accompanying documentation covered by
|
||||
this license (the "Software") to use, reproduce, display, distribute,
|
||||
execute, and transmit the Software, and to prepare derivative works of the
|
||||
Software, and to permit third-parties to whom the Software is furnished to
|
||||
do so, all subject to the following:
|
||||
|
||||
The copyright notices in the Software and this entire statement, including
|
||||
the above license grant, this restriction and the following disclaimer,
|
||||
must be included in all copies of the Software, in whole or in part, and
|
||||
all derivative works of the Software, unless such copies or derivative
|
||||
works are solely in the form of machine-executable object code generated by
|
||||
a source language processor.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
|
||||
SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
|
||||
FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
|
||||
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
||||
DEALINGS IN THE SOFTWARE.
|
||||
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,33 @@
|
||||
/*
|
||||
* This file is part of OpenTTD.
|
||||
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
|
||||
* OpenTTD 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 General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
/** @file ottd_optional.h Header to select between native. */
|
||||
|
||||
#ifndef OTTD_OPTIONAL_H
|
||||
#define OTTD_OPTIONAL_H
|
||||
|
||||
#if defined(__has_include)
|
||||
# if __has_include(<version>)
|
||||
# include <version>
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if (__cplusplus >= 201703L) || (defined(__cpp_lib_optional) && __cpp_lib_optional >= 201606L)
|
||||
|
||||
/* Native std::optional. */
|
||||
#include <optional>
|
||||
namespace opt = std;
|
||||
|
||||
#else
|
||||
|
||||
/* No std::optional, use local copy instead. */
|
||||
#include "optional.hpp"
|
||||
namespace opt = std::experimental;
|
||||
|
||||
#endif
|
||||
|
||||
#endif /* OTTD_OPTIONAL_H */
|
||||
Loading…
Reference in New Issue