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new protocol to open standard libraries

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This commit is contained in:
Roberto Ierusalimschy
2005-04-13 14:24:20 -03:00
parent 2873d4efff
commit 04f657c7f8
5 changed files with 15 additions and 20 deletions
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17
linit.c
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@@ -1,5 +1,5 @@
/*
** $Id: linit.c,v 1.9 2005/02/18 12:40:02 roberto Exp roberto $
** $Id: linit.c,v 1.10 2005/03/08 13:37:55 roberto Exp roberto $
** Initialization of libraries for lua.c
** See Copyright Notice in lua.h
*/
@@ -22,22 +22,17 @@ static const luaL_reg lualibs[] = {
{LUA_STRLIBNAME, luaopen_string},
{LUA_MATHLIBNAME, luaopen_math},
{LUA_DBLIBNAME, luaopen_debug},
{"", luaopen_loadlib},
{LUA_LOADLIBNAME, luaopen_loadlib},
{NULL, NULL}
};
LUALIB_API int luaopen_stdlibs (lua_State *L) {
LUALIB_API void luaL_openlibs (lua_State *L) {
const luaL_reg *lib = lualibs;
int t = lua_gettop(L);
lua_pushvalue(L, LUA_ENVIRONINDEX); /* save original environment */
for (; lib->func; lib++) {
lib->func(L); /* open library */
lua_settop(L, t + 1); /* discard any results */
lua_pushvalue(L, -1);
lua_replace(L, LUA_ENVIRONINDEX); /* restore environment */
lua_pushcfunction(L, lib->func);
lua_pushstring(L, lib->name);
lua_call(L, 1, 0);
}
lua_pop(L, 1);
return 0;
}