ltm.c
资源名称:wow.rar [点击查看]
上传用户:jxpjxmjjw
上传日期:2009-12-07
资源大小:5877k
文件大小:2k
源码类别:
模拟服务器
开发平台:
Visual C++
- /*
- ** $Id: ltm.c,v 1.1 2004/08/20 02:26:56 JH Exp $
- ** Tag methods
- ** See Copyright Notice in lua.h
- */
- #include <string.h>
- #define ltm_c
- #include "lua.h"
- #include "lobject.h"
- #include "lstate.h"
- #include "lstring.h"
- #include "ltable.h"
- #include "ltm.h"
- const char *const luaT_typenames[] = {
- "nil", "boolean", "userdata", "number",
- "string", "table", "function", "userdata", "thread"
- };
- void luaT_init (lua_State *L) {
- static const char *const luaT_eventname[] = { /* ORDER TM */
- "__index", "__newindex",
- "__gc", "__mode", "__eq",
- "__add", "__sub", "__mul", "__div",
- "__pow", "__unm", "__lt", "__le",
- "__concat", "__call"
- };
- int i;
- for (i=0; i<TM_N; i++) {
- G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
- luaS_fix(G(L)->tmname[i]); /* never collect these names */
- }
- }
- /*
- ** function to be used with macro "fasttm": optimized for absence of
- ** tag methods
- */
- const TObject *luaT_gettm (Table *events, TMS event, TString *ename) {
- const TObject *tm = luaH_getstr(events, ename);
- lua_assert(event <= TM_EQ);
- if (ttisnil(tm)) { /* no tag method? */
- events->flags |= cast(lu_byte, 1u<<event); /* cache this fact */
- return NULL;
- }
- else return tm;
- }
- const TObject *luaT_gettmbyobj (lua_State *L, const TObject *o, TMS event) {
- TString *ename = G(L)->tmname[event];
- switch (ttype(o)) {
- case LUA_TTABLE:
- return luaH_getstr(hvalue(o)->metatable, ename);
- case LUA_TUSERDATA:
- return luaH_getstr(uvalue(o)->uv.metatable, ename);
- default:
- return &luaO_nilobject;
- }
- }