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be98a4fdd4
It'll be up to @Rapptz's to make further changes to make sure GCC compiles, but the core of the functionality is there and my work is essentially done. Class bindings are up next, but really I don't want to even touch those. :c
139 lines
4.4 KiB
C++
139 lines
4.4 KiB
C++
// The MIT License (MIT)
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// Copyright (c) 2013 Danny Y., Rapptz
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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// the Software, and to permit persons to whom the Software is furnished to do so,
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// subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef SOL_LUA_FUNC_HPP
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#define SOL_LUA_FUNC_HPP
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#include "functional.hpp"
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#include "stack.hpp"
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namespace sol {
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namespace detail {
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struct lua_func {
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virtual int operator () (lua_State* L) {
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throw sol_error("Failure to call specialized wrapped C++ function from lua");
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}
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virtual ~lua_func() {};
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};
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template<typename TFx>
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struct lambda_lua_func : public lua_func {
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typedef decltype(&TFx::operator()) fx_t;
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typedef function_traits<fx_t> fx_traits;
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TFx fx;
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template<typename... TFxn>
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lambda_lua_func(TFxn&&... fxn) : fx(std::forward<TFxn>(fxn)...) {
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}
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virtual int operator () (lua_State* L) override {
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return (*this)(tuple_types<fx_traits::return_t>(), fx_traits::args_t(), L);
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}
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template<typename... Tn>
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int operator()(types<void>, types<Tn...> t, lua_State* L) {
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stack::pop_call(L, fx, t);
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return 0;
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}
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template<typename... TRn, typename... Tn>
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int operator()(types<TRn...>, types<Tn...> t, lua_State* L) {
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auto r = stack::pop_call(L, fx, t);
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stack::push(L, r);
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return sizeof...(TRn);
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}
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};
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template<typename TFx, typename T = TFx, bool is_member_pointer = std::is_member_function_pointer<TFx>::value>
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struct explicit_lua_func : public lua_func {
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typedef typename std::remove_pointer<typename std::decay<TFx>::type>::type fx_t;
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typedef function_traits<fx_t> fx_traits;
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TFx fx;
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template<typename... TFxn>
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explicit_lua_func(TFxn&&... fxn) : fx(std::forward<TFxn>(fxn)...) {
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}
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virtual int operator () (lua_State* L) override {
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return (*this)(tuple_types<fx_traits::return_t>(), fx_traits::args_t(), L);
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}
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template<typename... Tn>
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int operator () (types<void>, types<Tn...> t, lua_State* L) {
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stack::pop_call(L, fx, t);
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return 0;
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}
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template<typename... TRn, typename... Tn>
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int operator () (types<TRn...>, types<Tn...> t, lua_State* L) {
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auto r = stack::pop_call(L, fx, t);
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stack::push(L, r);
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return sizeof...(TRn);
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}
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};
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template<typename TFx, typename T>
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struct explicit_lua_func<TFx, T, true> : public lua_func {
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typedef typename std::remove_pointer<typename std::decay<TFx>::type>::type fx_t;
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typedef function_traits<fx_t> fx_traits;
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T* member;
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TFx fx;
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template<typename... TFxn>
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explicit_lua_func(T* m, TFxn&&... fxn) : member(m), fx(std::forward<TFxn>(fxn)...) {
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}
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virtual int operator () (lua_State* L) override {
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return (*this)(tuple_types<fx_traits::return_t>(), fx_traits::args_t(), L);
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}
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template<typename... Tn>
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int operator () (types<void>, types<Tn...>, lua_State* L) {
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stack::pop_call(L, fx, t);
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return 0;
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}
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template<typename... TRn, typename... Tn>
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int operator () (types<TRn...>, types<Tn...> t, lua_State* L) {
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auto r = stack::pop_call(L, fx, t);
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stack::push(L, r);
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return sizeof...(TRn);
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}
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};
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int lua_cfun(lua_State* L) {
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void* bridgedata = lua_touserdata(L, lua_upvalueindex(1));
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auto* fx = static_cast<lua_func*>(bridgedata);
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int r = fx->operator()(L);
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return r;
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}
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} // detail
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} // sol
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#endif // SOL_LUA_FUNC_HPP
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