143 lines
4.7 KiB
C++
143 lines
4.7 KiB
C++
// sol2
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// The MIT License (MIT)
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// Copyright (c) 2013-2022 Rapptz, ThePhD and contributors
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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_FUNCTION_HPP
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#define SOL_FUNCTION_HPP
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#include <sol/stack.hpp>
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#include <sol/unsafe_function.hpp>
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#include <sol/protected_function.hpp>
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#include <sol/bytecode.hpp>
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#include <functional>
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namespace sol {
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template <typename... Ret, typename... Args>
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decltype(auto) stack_proxy::call(Args&&... args) {
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stack_function sf(this->lua_state(), this->stack_index());
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return sf.template call<Ret...>(std::forward<Args>(args)...);
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}
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inline protected_function_result::protected_function_result(unsafe_function_result&& o) noexcept
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: L(o.lua_state()), index(o.stack_index()), returncount(o.return_count()), popcount(o.return_count()), err(o.status()) {
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// Must be manual, otherwise destructor will screw us
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// return count being 0 is enough to keep things clean
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// but we will be thorough
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o.abandon();
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}
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inline protected_function_result& protected_function_result::operator=(unsafe_function_result&& o) noexcept {
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L = o.lua_state();
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index = o.stack_index();
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returncount = o.return_count();
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popcount = o.return_count();
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err = o.status();
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// Must be manual, otherwise destructor will screw us
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// return count being 0 is enough to keep things clean
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// but we will be thorough
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o.abandon();
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return *this;
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}
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inline unsafe_function_result::unsafe_function_result(protected_function_result&& o) noexcept
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: L(o.lua_state()), index(o.stack_index()), returncount(o.return_count()) {
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// Must be manual, otherwise destructor will screw us
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// return count being 0 is enough to keep things clean
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// but we will be thorough
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o.abandon();
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}
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inline unsafe_function_result& unsafe_function_result::operator=(protected_function_result&& o) noexcept {
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L = o.lua_state();
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index = o.stack_index();
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returncount = o.return_count();
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// Must be manual, otherwise destructor will screw us
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// return count being 0 is enough to keep things clean
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// but we will be thorough
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o.abandon();
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return *this;
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}
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namespace detail {
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template <typename... R>
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struct std_shim {
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unsafe_function lua_func_;
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std_shim(unsafe_function lua_func) : lua_func_(std::move(lua_func)) {
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}
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template <typename... Args>
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meta::return_type_t<R...> operator()(Args&&... args) {
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return lua_func_.call<R...>(std::forward<Args>(args)...);
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}
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};
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template <>
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struct std_shim<void> {
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unsafe_function lua_func_;
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std_shim(unsafe_function lua_func) : lua_func_(std::move(lua_func)) {
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}
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template <typename... Args>
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void operator()(Args&&... args) {
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lua_func_.call<void>(std::forward<Args>(args)...);
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}
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};
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} // namespace detail
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namespace stack {
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template <typename Signature>
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struct unqualified_getter<std::function<Signature>> {
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typedef meta::bind_traits<Signature> fx_t;
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typedef typename fx_t::args_list args_lists;
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typedef meta::tuple_types<typename fx_t::return_type> return_types;
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template <typename... R>
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static std::function<Signature> get_std_func(types<R...>, lua_State* L, int index) {
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detail::std_shim<R...> fx(unsafe_function(L, index));
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return fx;
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}
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static std::function<Signature> get(lua_State* L, int index, record& tracking) {
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tracking.use(1);
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type t = type_of(L, index);
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if (t == type::none || t == type::lua_nil) {
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return nullptr;
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}
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return get_std_func(return_types(), L, index);
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}
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};
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template <typename Allocator>
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struct unqualified_getter<basic_bytecode<Allocator>> {
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static basic_bytecode<Allocator> get(lua_State* L, int index, record& tracking) {
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tracking.use(1);
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stack_function sf(L, index);
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return sf.dump(&dump_panic_on_error);
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}
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};
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} // namespace stack
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} // namespace sol
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#endif // SOL_FUNCTION_HPP
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