sol2/sol/stack_field.hpp
ThePhD 220ff5a475 Fixes the key value being left on the stack when using iterators (the other case that's not "and we're not actually using this for iteration", asides from the empty table case).
Closes #111 - fixed
Closes #110 - need to test exactly how much extra speed was gained
Closes #108 - seems to be fixed, albeit std::mutex is a butt on VC++
2016-06-07 20:32:10 -04:00

247 lines
8.6 KiB
C++

// The MIT License (MIT)
// Copyright (c) 2013-2016 Rapptz, ThePhD and contributors
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#ifndef SOL_STACK_FIELD_HPP
#define SOL_STACK_FIELD_HPP
#include "stack_core.hpp"
#include "stack_push.hpp"
#include "stack_get.hpp"
#include "stack_check_get.hpp"
namespace sol {
namespace stack {
template <typename T, bool, bool, typename>
struct field_getter {
template <typename Key>
void get(lua_State* L, Key&& key, int tableindex = -2) {
push( L, std::forward<Key>( key ) );
lua_gettable( L, tableindex );
}
};
template <bool b, bool raw, typename C>
struct field_getter<metatable_key_t, b, raw, C> {
void get(lua_State* L, metatable_key_t, int tableindex = -1) {
if (lua_getmetatable(L, tableindex) == 0)
push(L, nil);
}
};
template <typename T, bool raw>
struct field_getter<T, true, raw, std::enable_if_t<meta::is_c_str<T>::value>> {
template <typename Key>
void get(lua_State* L, Key&& key, int = -1) {
lua_getglobal(L, &key[0]);
}
};
template <typename T>
struct field_getter<T, false, false, std::enable_if_t<meta::is_c_str<T>::value>> {
template <typename Key>
void get(lua_State* L, Key&& key, int tableindex = -1) {
lua_getfield(L, tableindex, &key[0]);
}
};
#if SOL_LUA_VERSION >= 503
template <typename T>
struct field_getter<T, false, false, std::enable_if_t<std::is_integral<T>::value>> {
template <typename Key>
void get(lua_State* L, Key&& key, int tableindex = -1) {
lua_geti(L, tableindex, static_cast<lua_Integer>(key));
}
};
#endif // Lua 5.3.x
#if SOL_LUA_VERSION >= 502
template <typename C>
struct field_getter<void*, false, true, C> {
void get(lua_State* L, void* key, int tableindex = -1) {
lua_rawgetp(L, tableindex, key);
}
};
#endif // Lua 5.3.x
template <typename T>
struct field_getter<T, false, true, std::enable_if_t<std::is_integral<T>::value>> {
template <typename Key>
void get(lua_State* L, Key&& key, int tableindex = -1) {
lua_rawgeti(L, tableindex, static_cast<lua_Integer>(key));
}
};
template <typename... Args, bool b, bool raw, typename C>
struct field_getter<std::tuple<Args...>, b, raw, C> {
template <std::size_t... I, typename Keys>
void apply(std::index_sequence<0, I...>, lua_State* L, Keys&& keys, int tableindex) {
get_field<b, raw>(L, detail::forward_get<0>(keys), tableindex);
void(detail::swallow{ (get_field<false, raw>(L, detail::forward_get<I>(keys)), 0)... });
reference saved(L, -1);
lua_pop(L, static_cast<int>(sizeof...(I)));
saved.push();
}
template <typename Keys>
void get(lua_State* L, Keys&& keys) {
apply(std::make_index_sequence<sizeof...(Args)>(), L, std::forward<Keys>(keys), lua_absindex(L, -1));
}
template <typename Keys>
void get(lua_State* L, Keys&& keys, int tableindex) {
apply(std::make_index_sequence<sizeof...(Args)>(), L, std::forward<Keys>(keys), tableindex);
}
};
template <typename A, typename B, bool b, bool raw, typename C>
struct field_getter<std::pair<A, B>, b, raw, C> {
template <typename Keys>
void get(lua_State* L, Keys&& keys, int tableindex) {
get_field<b, raw>(L, detail::forward_get<0>(keys), tableindex);
get_field<false, raw>(L, detail::forward_get<1>(keys));
reference saved(L, -1);
lua_pop(L, static_cast<int>(2));
saved.push();
}
template <typename Keys>
void get(lua_State* L, Keys&& keys) {
get_field<b, raw>(L, detail::forward_get<0>(keys));
get_field<false, raw>(L, detail::forward_get<1>(keys));
reference saved(L, -1);
lua_pop(L, static_cast<int>(2));
saved.push();
}
};
template <typename T, bool, bool, typename>
struct field_setter {
template <typename Key, typename Value>
void set(lua_State* L, Key&& key, Value&& value, int tableindex = -3) {
push(L, std::forward<Key>(key));
push(L, std::forward<Value>(value));
lua_settable(L, tableindex);
}
};
template <typename T, bool b, typename C>
struct field_setter<T, b, true, C> {
template <typename Key, typename Value>
void set(lua_State* L, Key&& key, Value&& value, int tableindex = -3) {
push(L, std::forward<Key>(key));
push(L, std::forward<Value>(value));
lua_rawset(L, tableindex);
}
};
template <bool b, bool raw, typename C>
struct field_setter<metatable_key_t, b, raw, C> {
template <typename Value>
void set(lua_State* L, metatable_key_t, Value&& value, int tableindex = -2) {
push(L, std::forward<Value>(value));
lua_setmetatable(L, tableindex);
}
};
template <typename T, bool raw>
struct field_setter<T, true, raw, std::enable_if_t<meta::is_c_str<T>::value>> {
template <typename Key, typename Value>
void set(lua_State* L, Key&& key, Value&& value, int = -2) {
push(L, std::forward<Value>(value));
lua_setglobal(L, &key[0]);
}
};
template <typename T>
struct field_setter<T, false, false, std::enable_if_t<meta::is_c_str<T>::value>> {
template <typename Key, typename Value>
void set(lua_State* L, Key&& key, Value&& value, int tableindex = -2) {
push(L, std::forward<Value>(value));
lua_setfield(L, tableindex, &key[0]);
}
};
#if SOL_LUA_VERSION >= 503
template <typename T>
struct field_setter<T, false, false, std::enable_if_t<std::is_integral<T>::value>> {
template <typename Key, typename Value>
void set(lua_State* L, Key&& key, Value&& value, int tableindex = -2) {
push(L, std::forward<Value>(value));
lua_seti(L, tableindex, static_cast<lua_Integer>(key));
}
};
#endif // Lua 5.3.x
template <typename T>
struct field_setter<T, false, true, std::enable_if_t<std::is_integral<T>::value>> {
template <typename Key, typename Value>
void set(lua_State* L, Key&& key, Value&& value, int tableindex = -2) {
push(L, std::forward<Value>(value));
lua_rawseti(L, tableindex, static_cast<lua_Integer>(key));
}
};
#if SOL_LUA_VERSION >= 502
template <typename C>
struct field_setter<void*, false, true, C> {
template <typename Key, typename Value>
void set(lua_State* L, void* key, Value&& value, int tableindex = -2) {
push(L, std::forward<Value>(value));
lua_rawsetp(L, tableindex, key);
}
};
#endif // Lua 5.2.x
template <typename... Args, bool b, bool raw, typename C>
struct field_setter<std::tuple<Args...>, b, raw, C> {
template <bool g, std::size_t I, typename Key, typename Value>
void apply(std::index_sequence<I>, lua_State* L, Key&& keys, Value&& value, int tableindex) {
I < 1 ?
set_field<g, raw>(L, detail::forward_get<I>(keys), std::forward<Value>(value), tableindex) :
set_field<g, raw>(L, detail::forward_get<I>(keys), std::forward<Value>(value));
}
template <bool g, std::size_t I0, std::size_t I1, std::size_t... I, typename Keys, typename Value>
void apply(std::index_sequence<I0, I1, I...>, lua_State* L, Keys&& keys, Value&& value, int tableindex) {
I0 < 1 ? get_field<g, raw>(L, detail::forward_get<I0>(keys), tableindex) : get_field<g, raw>(L, detail::forward_get<I0>(keys), -1);
apply<false>(std::index_sequence<I1, I...>(), L, std::forward<Keys>(keys), std::forward<Value>(value), -1);
}
template <typename Keys, typename Value>
void set(lua_State* L, Keys&& keys, Value&& value, int tableindex = -3) {
apply<b>(std::make_index_sequence<sizeof...(Args)>(), L, std::forward<Keys>(keys), std::forward<Value>(value), tableindex);
}
};
template <typename A, typename B, bool b, bool raw, typename C>
struct field_setter<std::pair<A, B>, b, raw, C> {
template <typename Keys, typename Value>
void set(lua_State* L, Keys&& keys, Value&& value, int tableindex = -1) {
get_field<b, raw>(L, detail::forward_get<0>(keys), tableindex);
set_field<false, raw>(L, detail::forward_get<1>(keys), std::forward<Value>(value));
}
};
} // stack
} // sol
#endif // SOL_STACK_FIELD_HPP