mirror of
https://gitcode.com/JianFeeeee/LuaCangjia_api.git
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c23f8c5e32
- lib/lua 替换为 Lua 5.1.5 官方源码; CMakeLists 删除 5.1 不存在的 lcorolib.c/lctype.c/lutf8lib.c/lbitlib.c - 补充 lua.hpp C++ 包装头(5.1 官方不提供, 保持桥接 include 路径不变) - LUA_OK 兼容宏: 5.1 无此定义(成功返回值为 0) - luaL_tolstring 兼容: 5.1 无此 API, l_print 改用 lua_tostring + lua_typename 兜底(#if LUA_VERSION_NUM >= 502 条件编译, 弹栈逻辑同步分支) - luaL_setfuncs 兼容: 5.1 无此 API, push_tty_file 改手动循环注册 - I/O 重定向沿用 Registry 方案(自 5.2.4 分支同步), typed interop 版本自适应断言同步 - 验证: GTest 44/44 通过
76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
/*
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** $Id: ltm.c,v 2.8.1.1 2007/12/27 13:02:25 roberto Exp $
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** Tag methods
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** See Copyright Notice in lua.h
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*/
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#include <string.h>
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#define ltm_c
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#define LUA_CORE
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#include "lua.h"
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#include "lobject.h"
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#include "lstate.h"
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#include "lstring.h"
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#include "ltable.h"
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#include "ltm.h"
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const char *const luaT_typenames[] = {
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"nil", "boolean", "userdata", "number",
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"string", "table", "function", "userdata", "thread",
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"proto", "upval"
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};
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void luaT_init (lua_State *L) {
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static const char *const luaT_eventname[] = { /* ORDER TM */
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"__index", "__newindex",
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"__gc", "__mode", "__eq",
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"__add", "__sub", "__mul", "__div", "__mod",
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"__pow", "__unm", "__len", "__lt", "__le",
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"__concat", "__call"
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};
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int i;
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for (i=0; i<TM_N; i++) {
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G(L)->tmname[i] = luaS_new(L, luaT_eventname[i]);
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luaS_fix(G(L)->tmname[i]); /* never collect these names */
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}
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}
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/*
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** function to be used with macro "fasttm": optimized for absence of
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** tag methods
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*/
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const TValue *luaT_gettm (Table *events, TMS event, TString *ename) {
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const TValue *tm = luaH_getstr(events, ename);
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lua_assert(event <= TM_EQ);
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if (ttisnil(tm)) { /* no tag method? */
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events->flags |= cast_byte(1u<<event); /* cache this fact */
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return NULL;
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}
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else return tm;
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}
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const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
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Table *mt;
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switch (ttype(o)) {
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case LUA_TTABLE:
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mt = hvalue(o)->metatable;
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break;
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case LUA_TUSERDATA:
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mt = uvalue(o)->metatable;
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break;
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default:
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mt = G(L)->mt[ttype(o)];
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}
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return (mt ? luaH_getstr(mt, G(L)->tmname[event]) : luaO_nilobject);
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}
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