TheCloud/libSDL2pp
1
0
Fork 0
mirror of https://github.com/libSDL2pp/libSDL2pp.git synced 2025-08-04 03:15:59 -04:00
Code Issues Packages Projects Releases Wiki Activity

Added Private/Utility.hh with Or for template metaprogramming

Browse Source
This commit is contained in:
Vraiment 2017-07-30 12:03:57 -07:00
parent 7cfc30970b
commit 8489103f6a
3 changed files with 73 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
CMakeLists.txt
View File

@ -158,6 +158,7 @@ SET(LIBRARY_HEADERS
SDL2pp/Texture.hh
SDL2pp/Wav.hh
SDL2pp/Window.hh
SDL2pp/Private/Utility.hh
)
SET(LIBRARY_EXTERNAL_HEADERS

3
Doxyfile.in
View File

@ -21,7 +21,8 @@ INPUT = "@CMAKE_CURRENT_SOURCE_DIR@/SDL2pp" \
RECURSIVE = YES
# Exclude foreign files
EXCLUDE = "@CMAKE_CURRENT_SOURCE_DIR@/SDL2pp/external"
EXCLUDE = "@CMAKE_CURRENT_SOURCE_DIR@/SDL2pp/external" \
"@CMAKE_CURRENT_SOURCE_DIR@/SDL2pp/Private"
# Examples (doesn't work atm)
EXAMPLE_PATH = "@CMAKE_CURRENT_SOURCE_DIR@/examples"

70
SDL2pp/Private/Utility.hh Normal file
View File

@ -0,0 +1,70 @@
/*
libSDL2pp - C++11 bindings/wrapper for SDL2
Copyright (C) 2017 Vraiment <jemc44@gmail.com>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#ifndef SDL2PP_PRIVATE_UTILITY_HH
#define SDL2PP_PRIVATE_UTILITY_HH
#if __cplusplus > 201703L
// No need to include utility, until C++17 there
// is no definition for std::disjuntion before
#include <utility>
#endif
#include <type_traits>
namespace SDL2pp {
/*
* This is code not to be used directly by users of SDL2pp.
*/
namespace Private {
/*
* Templated class to perform an "OR" operation on any amount of types.
*
* Usage is as follows:
* template <typename T,
* typename = typename Or<HasFeatureOne<T>, HasFeatureTwo<T>>
* void UseFeatureOneOrFeatureTwo(T t) {
* // The code will be only compiled if either
* // HasFeatureOne<T> or HasFeatureTwo<T> are type_true
* }
*/
#if __cplusplus >= 201703L
// Use the standard definitions if they are available
template <typename T, typename... Tx>
using Or = typename std::disjunction<T, Tx...>::type;
#else
template <typename...>
struct OrOperation : std::false_type { };
template <typename T>
struct OrOperation<T> : T { };
template <typename T, typename... Tx>
struct OrOperation<T, Tx...> : std::conditional<bool(T::value), T, OrOperation<Tx...>> { };
template <typename T, typename... Tx>
using Or = typename OrOperation<T, Tx...>::type;
#endif
}
}
#endif