diff options
Diffstat (limited to 'lbaselib.c')
| -rw-r--r-- | lbaselib.c | 40 |
1 files changed, 1 insertions, 39 deletions
| @@ -1,5 +1,5 @@ | |||
| 1 | /* | 1 | /* |
| 2 | ** $Id: lbaselib.c,v 1.238 2010/03/19 15:52:48 roberto Exp roberto $ | 2 | ** $Id: lbaselib.c,v 1.239 2010/03/22 18:28:03 roberto Exp roberto $ |
| 3 | ** Basic library | 3 | ** Basic library |
| 4 | ** See Copyright Notice in lua.h | 4 | ** See Copyright Notice in lua.h |
| 5 | */ | 5 | */ |
| @@ -107,50 +107,12 @@ static int luaB_setmetatable (lua_State *L) { | |||
| 107 | } | 107 | } |
| 108 | 108 | ||
| 109 | 109 | ||
| 110 | |||
| 111 | #if defined(LUA_COMPAT_FENV) | ||
| 112 | |||
| 113 | static void getfunc (lua_State *L, int opt) { | ||
| 114 | if (lua_isfunction(L, 1)) lua_pushvalue(L, 1); | ||
| 115 | else { | ||
| 116 | lua_Debug ar; | ||
| 117 | int level = opt ? luaL_optint(L, 1, 1) : luaL_checkint(L, 1); | ||
| 118 | luaL_argcheck(L, level >= 0, 1, "level must be non-negative"); | ||
| 119 | if (lua_getstack(L, level, &ar) == 0) | ||
| 120 | luaL_argerror(L, 1, "invalid level"); | ||
| 121 | lua_getinfo(L, "f", &ar); | ||
| 122 | } | ||
| 123 | } | ||
| 124 | |||
| 125 | static int luaB_getfenv (lua_State *L) { | ||
| 126 | getfunc(L, 1); | ||
| 127 | if (lua_iscfunction(L, -1)) /* is a C function? */ | ||
| 128 | lua_pushglobaltable(L); /* return the global env. */ | ||
| 129 | else | ||
| 130 | lua_getfenv(L, -1); | ||
| 131 | return 1; | ||
| 132 | } | ||
| 133 | |||
| 134 | static int luaB_setfenv (lua_State *L) { | ||
| 135 | luaL_checktype(L, 2, LUA_TTABLE); | ||
| 136 | getfunc(L, 0); | ||
| 137 | lua_pushvalue(L, 2); | ||
| 138 | if (lua_iscfunction(L, -2) || lua_setfenv(L, -2) == 0) | ||
| 139 | return luaL_error(L, | ||
| 140 | LUA_QL("setfenv") " cannot change environment of given object"); | ||
| 141 | return 1; | ||
| 142 | } | ||
| 143 | |||
| 144 | #else | ||
| 145 | |||
| 146 | static int luaB_getfenv (lua_State *L) { | 110 | static int luaB_getfenv (lua_State *L) { |
| 147 | return luaL_error(L, "getfenv/setfenv deprecated"); | 111 | return luaL_error(L, "getfenv/setfenv deprecated"); |
| 148 | } | 112 | } |
| 149 | 113 | ||
| 150 | #define luaB_setfenv luaB_getfenv | 114 | #define luaB_setfenv luaB_getfenv |
| 151 | 115 | ||
| 152 | #endif | ||
| 153 | |||
| 154 | 116 | ||
| 155 | static int luaB_rawequal (lua_State *L) { | 117 | static int luaB_rawequal (lua_State *L) { |
| 156 | luaL_checkany(L, 1); | 118 | luaL_checkany(L, 1); |
