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95 Zeilen
2.8 KiB
C++
95 Zeilen
2.8 KiB
C++
/**
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* This file is part of Traintastic,
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* see <https://github.com/traintastic/traintastic>.
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*
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* Copyright (C) 2019-2026 Reinder Feenstra
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "object.hpp"
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#include "object/object.hpp"
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#include "object/objectlist.hpp"
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#include "object/interface.hpp"
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#include "object/cbusinterface.hpp"
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#include "object/loconetinterface.hpp"
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#include "object/scriptthrottle.hpp"
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namespace Lua::Object {
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constexpr char const* objectsGlobal = "objects";
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void registerTypes(lua_State* L)
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{
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Object::registerType(L);
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ObjectList::registerType(L);
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Interface::registerType(L);
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CBUSInterface::registerType(L);
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LocoNetInterface::registerType(L);
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ScriptThrottle::registerType(L);
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// weak table for object userdata:
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lua_newtable(L);
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lua_newtable(L); // metatable
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lua_pushliteral(L, "__mode");
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lua_pushliteral(L, "v");
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lua_rawset(L, -3);
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lua_setmetatable(L, -2);
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lua_setglobal(L, objectsGlobal);
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}
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void push(lua_State* L, ::Object& value)
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{
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push(L, value.shared_from_this());
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}
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void push(lua_State* L, const ObjectPtr& value)
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{
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if(value)
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{
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lua_getglobal(L, objectsGlobal);
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lua_rawgetp(L, -1, value.get());
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if(lua_isnil(L, -1)) // object not in table
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{
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lua_pop(L, 1); // remove nil
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new(lua_newuserdata(L, sizeof(ObjectPtrWeak))) ObjectPtrWeak(value);
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if(dynamic_cast<::CBUSInterface*>(value.get()))
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{
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luaL_setmetatable(L, CBUSInterface::metaTableName);
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}
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else if(dynamic_cast<::LocoNetInterface*>(value.get()))
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luaL_setmetatable(L, LocoNetInterface::metaTableName);
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else if(dynamic_cast<AbstractObjectList*>(value.get()))
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luaL_setmetatable(L, ObjectList::metaTableName);
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else if(dynamic_cast<::ScriptThrottle*>(value.get()))
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{
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luaL_setmetatable(L, ScriptThrottle::metaTableName);
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}
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else
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luaL_setmetatable(L, Object::metaTableName);
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lua_pushvalue(L, -1); // copy userdata on stack
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lua_rawsetp(L, -3, value.get()); // add object to table
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}
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lua_insert(L, lua_gettop(L) - 1); // swap table and userdata
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lua_pop(L, 1); // remove table
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}
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else
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lua_pushnil(L);
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}
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}
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