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-rw-r--r--lbaselib.c40
1 files changed, 1 insertions, 39 deletions
diff --git a/lbaselib.c b/lbaselib.c
index bba92816..0f74f53e 100644
--- a/lbaselib.c
+++ b/lbaselib.c
@@ -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
113static 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
125static 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
134static 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
146static int luaB_getfenv (lua_State *L) { 110static 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
155static int luaB_rawequal (lua_State *L) { 117static int luaB_rawequal (lua_State *L) {
156 luaL_checkany(L, 1); 118 luaL_checkany(L, 1);