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livetrax/libs/lua/LuaBridge/detail/ClassInfo.h

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//------------------------------------------------------------------------------
/*
https://github.com/vinniefalco/LuaBridge
2016-01-17 15:25:56 -05:00
Copyright 2012, Vinnie Falco <vinnie.falco@gmail.com>
License: The MIT License (http://www.opensource.org/licenses/mit-license.php)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
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 AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
//==============================================================================
#ifdef COMPILER_MSVC
#ifdef LIBARDOUR_DLL_EXPORTS
# define LuaBridge_API __declspec(dllexport)
#else
# define LuaBridge_API __declspec(dllimport)
#endif
#else
# define LuaBridge_API // mingw is sane WRT to static class members
#endif
/** Unique Lua registry keys for a class.
Each registered class inserts three keys into the registry, whose
values are the corresponding static, class, and const metatables. This
allows a quick and reliable lookup for a metatable from a template type.
*/
template <class T>
class LuaBridge_API ClassInfo
{
public:
#ifdef PLATFORM_WINDOWS
/* static symbols on windows (even identical symbols) are not
* mapped to the same address when mixing .dll + .exe.
* the implementation is moved to libardour/gtk2_ardour.
*/
static void const* getStaticKey ();
static void const* getClassKey ();
static void const* getConstKey ();
#else
/** Get the key for the static table.
The static table holds the static data members, static properties, and
static member functions for a class.
*/
static void const* getStaticKey ()
{
static char value;
return &value;
}
/** Get the key for the class table.
The class table holds the data members, properties, and member functions
of a class. Read-only data and properties, and const member functions are
also placed here (to save a lookup in the const table).
*/
static void const* getClassKey ()
{
static char value;
return &value;
}
/** Get the key for the const table.
The const table holds read-only data members and properties, and const
member functions of a class.
*/
static void const* getConstKey ()
{
static char value;
return &value;
}
#endif
};