diff options
Diffstat (limited to 'engines/sword25/util/lua_serialization_util.cpp')
-rw-r--r-- | engines/sword25/util/lua_serialization_util.cpp | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/engines/sword25/util/lua_serialization_util.cpp b/engines/sword25/util/lua_serialization_util.cpp new file mode 100644 index 0000000000..80009aff60 --- /dev/null +++ b/engines/sword25/util/lua_serialization_util.cpp @@ -0,0 +1,77 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distri8buted in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "sword25/util/lua_serialization_util.h" + +#include "common/scummsys.h" + +#include "lua/lobject.h" +#include "lua/lstate.h" +#include "lua/lgc.h" + + +namespace Lua { + +void pushObject(lua_State *luaState, TValue *obj) { + setobj2s(luaState, luaState->top, obj); + + api_check(luaState, luaState->top < luaState->ci->top); + luaState->top++; +} + +void pushProto(lua_State *luaState, Proto *proto) { + TValue obj; + setptvalue(luaState, &obj, proto); + + pushObject(luaState, &obj); +} + +void pushUpValue(lua_State *luaState, UpVal *upval) { + TValue obj; + + obj.value.gc = cast(GCObject *, upval); + obj.tt = LUA_TUPVAL; + checkliveness(G(L), obj); + + pushObject(luaState, &obj); +} + +void pushString(lua_State *luaState, TString *str) { + TValue o; + setsvalue(luaState, &o, str); + + pushObject(luaState, &o); +} + +/* A simple reimplementation of the unfortunately static function luaA_index. + * Does not support the global table, registry, or upvalues. */ +StkId getObject(lua_State *luaState, int stackpos) { + if(stackpos > 0) { + lua_assert(luaState->base+stackpos-1 < luaState->top); + return luaState->base+stackpos-1; + } else { + lua_assert(L->top-stackpos >= L->base); + return luaState->top+stackpos; + } +} + +} // End of namespace Lua |