mirror of
https://github.com/ThePhD/sol2.git
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113 lines
4.2 KiB
C++
113 lines
4.2 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_TABLE_HPP
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#define SOL_TABLE_HPP
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#include "stack.hpp"
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#include "lua_function.hpp"
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#include <unordered_map>
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#include <memory>
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namespace sol {
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class table : virtual public reference {
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private:
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std::unordered_map<std::string, std::shared_ptr<detail::lua_func>> funcs;
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public:
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table() noexcept: reference{} {}
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table(lua_State* L, int index = -1): reference(L, index) {
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type_assert(L, index, type::table);
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}
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template<typename T, typename U>
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T get(U&& key) const {
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push();
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stack::push(state(), std::forward<U>(key));
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lua_gettable(state(), -2);
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type_assert(state(), -1, type_of<T>());
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auto result = stack::pop<T>(state());
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lua_pop(state(), 1);
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return result;
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}
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template<typename T, typename U>
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table& set(T&& key, U&& value) {
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push();
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stack::push(state(), std::forward<T>(key));
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stack::push(state(), std::forward<U>(value));
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lua_settable(state(), -3);
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lua_pop(state(), 1);
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return *this;
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}
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template<typename T, typename TFx>
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table& set_function( T&& key, TFx&& fx ) {
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typedef typename std::remove_pointer<typename std::decay<TFx>::type>::type clean_fx;
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const static bool isfunction = std::is_function<clean_fx>::value;
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return set_function( std::integral_constant<bool, !isfunction>( ),
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std::forward<T>( key ), std::forward<TFx>( fx ) );
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}
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template<typename T, typename TFx>
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table& set_function( std::true_type, T&& key, TFx&& fx ) {
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typedef typename std::decay<TFx>::type clean_fx;
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std::string fkey( key );
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lua_CFunction freefunc = &detail::lua_cfun;
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auto hint = funcs.find( fkey );
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detail::lua_func* target = nullptr;
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if ( hint == funcs.end( ) ) {
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std::shared_ptr<detail::lua_func> sptr( new detail::lambda_lua_func<clean_fx>( std::forward<TFx>( fx ) ) );
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hint = funcs.emplace_hint( hint, fkey, std::move( sptr ) );
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}
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target = hint->second.get( );
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lua_pushlightuserdata( state( ), static_cast<void*>( target ) );
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lua_pushcclosure( state( ), freefunc, 1 );
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lua_setglobal( state( ), fkey.c_str( ) );
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return *this;
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}
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template <typename T, typename TFx>
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table& set_function( std::false_type, T&& key, TFx&& fx ) {
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typedef typename std::decay<TFx>::type clean_fx;
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std::string fkey( key );
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lua_CFunction freefunc = &detail::lua_cfun;
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auto hint = funcs.find( fkey );
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detail::lua_func* target = nullptr;
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if ( hint == funcs.end( ) ) {
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std::shared_ptr<detail::lua_func> sptr( new detail::explicit_lua_func<TFx>( std::forward<TFx>( fx ) ) );
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hint = funcs.emplace_hint( hint, fkey, std::move( sptr ) );
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}
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target = hint->second.get( );
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lua_pushlightuserdata( state( ), static_cast<void*>( target ) );
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lua_pushcclosure( state( ), freefunc, 1 );
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lua_setglobal( state( ), fkey.c_str( ) );
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return *this;
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}
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size_t size() const {
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push();
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return lua_rawlen(state(), -1);
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}
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};
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} // sol
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#endif // SOL_TABLE_HPP
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