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94 lines
3.4 KiB
C++
94 lines
3.4 KiB
C++
// sol2
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// The MIT License (MIT)
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// Copyright (c) 2013-2021 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_STACK_PROBE_HPP
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#define SOL_STACK_PROBE_HPP
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#include <sol/stack_core.hpp>
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#include <sol/stack_field.hpp>
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#include <sol/stack_check.hpp>
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namespace sol { namespace stack {
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template <typename T, typename P, bool b, bool raw, typename>
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struct probe_field_getter {
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template <typename Key>
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probe get(lua_State* L, Key&& key, int tableindex = -2) {
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if constexpr (!b) {
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if (!maybe_indexable(L, tableindex)) {
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return probe(false, 0);
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}
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}
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get_field<b, raw>(L, std::forward<Key>(key), tableindex);
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return probe(check<P>(L), 1);
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}
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};
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template <typename A, typename B, typename P, bool b, bool raw, typename C>
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struct probe_field_getter<std::pair<A, B>, P, b, raw, C> {
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template <typename Keys>
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probe get(lua_State* L, Keys&& keys, int tableindex = -2) {
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if (!b && !maybe_indexable(L, tableindex)) {
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return probe(false, 0);
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}
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get_field<b, raw>(L, std::get<0>(keys), tableindex);
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if (!maybe_indexable(L)) {
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return probe(false, 1);
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}
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get_field<false, raw>(L, std::get<1>(keys), tableindex);
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return probe(check<P>(L), 2);
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}
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};
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template <typename... Args, typename P, bool b, bool raw, typename C>
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struct probe_field_getter<std::tuple<Args...>, P, b, raw, C> {
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template <std::size_t I, typename Keys>
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probe apply(std::index_sequence<I>, int sofar, lua_State* L, Keys&& keys, int tableindex) {
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get_field<(I < 1) && b, raw>(L, std::get<I>(keys), tableindex);
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return probe(check<P>(L), sofar);
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}
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template <std::size_t I, std::size_t I1, std::size_t... In, typename Keys>
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probe apply(std::index_sequence<I, I1, In...>, int sofar, lua_State* L, Keys&& keys, int tableindex) {
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get_field < I<1 && b, raw>(L, std::get<I>(keys), tableindex);
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if (!maybe_indexable(L)) {
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return probe(false, sofar);
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}
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return apply(std::index_sequence<I1, In...>(), sofar + 1, L, std::forward<Keys>(keys), -1);
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}
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template <typename Keys>
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probe get(lua_State* L, Keys&& keys, int tableindex = -2) {
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if constexpr (!b) {
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if (!maybe_indexable(L, tableindex)) {
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return probe(false, 0);
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}
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return apply(std::index_sequence_for<Args...>(), 1, L, std::forward<Keys>(keys), tableindex);
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}
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else {
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return apply(std::index_sequence_for<Args...>(), 1, L, std::forward<Keys>(keys), tableindex);
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}
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}
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};
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}} // namespace sol::stack
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#endif // SOL_STACK_PROBE_HPP
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