| | 1 | // ---------------------------------------------------------------------------\r |
| | 2 | // FILE NAME : LuaThis.h\r |
| | 3 | // ---------------------------------------------------------------------------\r |
| | 4 | // DESCRIPTION :\r |
| | 5 | //\r |
| | 6 | // Controls the "this" table\r |
| | 7 | // \r |
| | 8 | // ---------------------------------------------------------------------------\r |
| | 9 | // VERSION : 1.01\r |
| | 10 | // DATE : 1-Sep-2005\r |
| | 11 | // AUTHOR : Richard Shephard\r |
| | 12 | // ---------------------------------------------------------------------------\r |
| | 13 | // LIBRARY INCLUDE FILES\r |
| | 14 | #ifndef __LUA_THIS_H__\r |
| | 15 | #define __LUA_THIS_H__\r |
| | 16 | \r |
| | 17 | #include "luainc.h"\r |
| | 18 | #include "luavirtualmachine.h"\r |
| | 19 | \r |
| | 20 | // Sets the "this" global table that scripts use\r |
| | 21 | \r |
| | 22 | class CLuaThis\r |
| | 23 | {\r |
| | 24 | public:\r |
| | 25 | CLuaThis (CLuaVirtualMachine& vm, int iRef) : m_iOldRef (0), m_vm (vm)\r |
| | 26 | {\r |
| | 27 | lua_State *state = (lua_State *) vm;\r |
| | 28 | if (vm.Ok ())\r |
| | 29 | {\r |
| | 30 | // Save the old "this" table\r |
| | 31 | lua_getglobal (state, "this");\r |
| | 32 | m_iOldRef = luaL_ref (state, LUA_REGISTRYINDEX);\r |
| | 33 | \r |
| | 34 | // replace it with our new one\r |
| | 35 | lua_rawgeti(state, LUA_REGISTRYINDEX, iRef);\r |
| | 36 | lua_setglobal (state, "this");\r |
| | 37 | }\r |
| | 38 | }\r |
| | 39 | \r |
| | 40 | virtual ~CLuaThis (void)\r |
| | 41 | {\r |
| | 42 | lua_State *state = (lua_State *) m_vm;\r |
| | 43 | if (m_iOldRef > 0 && m_vm.Ok ())\r |
| | 44 | {\r |
| | 45 | // Replace the old "this" table\r |
| | 46 | lua_rawgeti(state, LUA_REGISTRYINDEX, m_iOldRef);\r |
| | 47 | lua_setglobal (state, "this");\r |
| | 48 | luaL_unref (state, LUA_REGISTRYINDEX, m_iOldRef);\r |
| | 49 | }\r |
| | 50 | }\r |
| | 51 | \r |
| | 52 | \r |
| | 53 | protected:\r |
| | 54 | int m_iOldRef;\r |
| | 55 | CLuaVirtualMachine& m_vm;\r |
| | 56 | };\r |
| | 57 | \r |
| | 58 | #endif // __LUA_THIS_H__ |
git.r.bdr.sh / rbdr / pico-engine / blame_incremental