80 Zeilen
2.1 KiB
C++
80 Zeilen
2.1 KiB
C++
/**
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* server/test/lua/protect.hpp
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*
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* This file is part of the traintastic test suite.
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*
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* Copyright (C) 2021 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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#ifndef TRAINTASTIC_SERVER_TEST_LUA_PROTECT_HPP
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#define TRAINTASTIC_SERVER_TEST_LUA_PROTECT_HPP
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#include <csetjmp>
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#include <lua.hpp>
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inline lua_State* newStateWithProtect()
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{
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lua_State* L = luaL_newstate();
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*static_cast<void**>(lua_getextraspace(L)) = malloc(sizeof(jmp_buf));
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return L;
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}
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inline void closeStateWithProtect(lua_State* L)
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{
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free(*static_cast<void**>(lua_getextraspace(L)));
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lua_close(L);
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}
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inline int protectPanic(lua_State* L)
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{
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longjmp(*static_cast<jmp_buf*>(*static_cast<void**>(lua_getextraspace(L))), 1); // will never return
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}
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template<auto Func, class... Args>
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bool protect(lua_State* L, Args... args)
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{
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auto* oldPanic = lua_atpanic(L, protectPanic);
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bool success = true;
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if(setjmp(*static_cast<jmp_buf*>(*static_cast<void**>(lua_getextraspace(L)))) == 0)
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Func(L, args...);
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else
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success = false;
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lua_atpanic(L, oldPanic);
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return success;
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}
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template<auto Func, class R, class... Args>
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bool protect(R& result, lua_State* L, Args... args)
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{
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auto* oldPanic = lua_atpanic(L, protectPanic);
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bool success = true;
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if(setjmp(*static_cast<jmp_buf*>(*static_cast<void**>(lua_getextraspace(L)))) == 0)
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result = Func(L, args...);
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else
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success = false;
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lua_atpanic(L, oldPanic);
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return success;
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}
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#endif
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