mirror of
https://github.com/ThePhD/sol2.git
synced 2024-03-22 13:10:44 +08:00
85 lines
2.9 KiB
C++
85 lines
2.9 KiB
C++
// The MIT License (MIT)
|
|
|
|
// Copyright (c) 2013 Danny Y., Rapptz
|
|
|
|
// 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.
|
|
|
|
#ifndef SOL_FUNCTION_HPP
|
|
#define SOL_FUNCTION_HPP
|
|
|
|
#include "reference.hpp"
|
|
#include "tuple.hpp"
|
|
#include "stack.hpp"
|
|
|
|
namespace sol {
|
|
class function : virtual public reference {
|
|
private:
|
|
template<typename... Args>
|
|
void push_args(Args&&... args) const {
|
|
auto L = state();
|
|
using swallow = char[ ];
|
|
void(swallow{ (stack::push(L, std::forward<Args>(args)), '\0')... });
|
|
}
|
|
|
|
template<typename... Ret>
|
|
struct invoker {
|
|
template<typename... Args>
|
|
static std::tuple<Ret...> call( const function& ref, Args&&... args ) {
|
|
ref.push( );
|
|
ref.push_args( std::forward<Args>( args )... );
|
|
lua_pcall( ref.state( ), sizeof...( Args ), sizeof...( Ret ), 0 );
|
|
return std::make_tuple( stack::pop<Ret>( ref.state( ) )... );
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct invoker<> {
|
|
template<typename... Args>
|
|
static void call( const function& ref, Args&&... args ) {
|
|
ref.push( );
|
|
ref.push_args( std::forward<Args>( args )... );
|
|
lua_pcall( ref.state( ), sizeof...( Args ), 0, 0 );
|
|
}
|
|
};
|
|
|
|
template<typename T>
|
|
struct invoker<T> {
|
|
template<typename... Args>
|
|
static T call( const function& ref, Args&&... args ) {
|
|
ref.push( );
|
|
ref.push_args( std::forward<Args>( args )... );
|
|
lua_pcall( ref.state( ), sizeof...( Args ), 1, 0 );
|
|
return stack::pop<T>( ref.state( ) );
|
|
}
|
|
};
|
|
|
|
public:
|
|
function() : reference() {}
|
|
function(lua_State* L, int index = -1) : reference(L, index) {
|
|
type_assert(L, index, type::function);
|
|
}
|
|
|
|
template<typename... Ret, typename... Args>
|
|
auto invoke( Args&&... args ) {
|
|
return invoker<Ret...>::call( *this, std::forward<Args>( args )... );
|
|
}
|
|
};
|
|
} // sol
|
|
|
|
#endif // SOL_FUNCTION_HPP
|