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131 lines
3.6 KiB
C++
131 lines
3.6 KiB
C++
// Copyright (c) 2003 Daniel Wallin and Arvid Norberg
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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// ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
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// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
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// PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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// SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
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// OR OTHER DEALINGS IN THE SOFTWARE.
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#ifndef LUABIND_CONTAINER_POLICY_HPP_INCLUDED
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#define LUABIND_CONTAINER_POLICY_HPP_INCLUDED
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#include <luabind/config.hpp>
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#include <luabind/detail/policy.hpp>
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#include <luabind/detail/decorate_type.hpp> // for decorated_type
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#include <luabind/detail/primitives.hpp> // for null_type (ptr only), etc
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namespace luabind {
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namespace detail {
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template<class Policies>
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struct container_converter_lua_to_cpp
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{
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enum { consumed_args = 1 };
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template<class T>
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T to_cpp(lua_State* L, by_const_reference<T>, int index)
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{
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using value_type = typename T::value_type;
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specialized_converter_policy_n<1, Policies, value_type, lua_to_cpp> converter;
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T container;
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lua_pushnil(L);
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while(lua_next(L, index - 1))
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{
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container.push_back(converter.apply(L, decorated_type<value_type>(), -1));
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lua_pop(L, 1); // pop value
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}
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return container;
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}
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template<class T>
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T to_cpp(lua_State* L, by_value<T>, int index)
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{
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return to_cpp(L, by_const_reference<T>(), index);
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}
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template<class T>
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static int match(lua_State* L, by_const_reference<T>, int index)
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{
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if(lua_istable(L, index)) return 0; else return no_match;
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}
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template<class T>
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static int match(lua_State* L, by_value<T>, int index)
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{
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return match(L, by_const_reference<T>(), index);
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}
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template<class T>
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void converter_postcall(lua_State*, T, int) {}
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};
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template<class Policies>
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struct container_converter_cpp_to_lua
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{
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template<class T>
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void to_lua(lua_State* L, const T& container)
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{
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using value_type = typename T::value_type;
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specialized_converter_policy_n<1, Policies, value_type, lua_to_cpp> converter;
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lua_newtable(L);
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int index = 1;
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for(const auto& element : container)
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{
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converter.apply(L, element);
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lua_rawseti(L, -2, index);
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++index;
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}
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}
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};
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template<class Policies = no_policies>
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struct container_policy
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{
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struct only_accepts_nonconst_pointers {};
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template<class T, class Direction>
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struct specialize;
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template<class T>
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struct specialize<T, lua_to_cpp> {
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using type = container_converter_lua_to_cpp<Policies>;
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};
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template<class T>
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struct specialize<T, cpp_to_lua> {
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using type = container_converter_cpp_to_lua<Policies>;
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};
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};
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}
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}
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namespace luabind
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{
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template<unsigned int N, typename ElementPolicies = no_policies >
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using container_policy = meta::type_list<converter_policy_injector<N, detail::container_policy<ElementPolicies>>>;
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}
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#endif // LUABIND_CONTAINER_POLICY_HPP_INCLUDED
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