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xpcall now may get arguments to function to be called

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This commit is contained in:
Roberto Ierusalimschy 2006-10-24 16:46:12 -03:00
parent 9f5a052c27
commit be822a5f1c
1 changed files with 8 additions and 5 deletions
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13
lbaselib.c
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@ -1,5 +1,5 @@
/*
** $Id: lbaselib.c,v 1.193 2006/10/10 17:40:17 roberto Exp roberto $
** $Id: lbaselib.c,v 1.194 2006/10/20 19:30:53 roberto Exp roberto $
** Basic library
** See Copyright Notice in lua.h
*/
@ -381,10 +381,13 @@ static int luaB_pcall (lua_State *L) {
static int luaB_xpcall (lua_State *L) {
int status;
luaL_checkany(L, 2);
lua_settop(L, 2);
lua_insert(L, 1); /* put error function under function to be called */
status = lua_pcall(L, 0, LUA_MULTRET, 1);
int n = lua_gettop(L);
luaL_argcheck(L, n >= 2, 2, "value expected");
lua_pushvalue(L, 1); /* exchange function... */
lua_pushvalue(L, 2); /* ...and error handler */
lua_replace(L, 1);
lua_replace(L, 2);
status = lua_pcall(L, n - 2, LUA_MULTRET, 1);
lua_pushboolean(L, (status == LUA_OK));
lua_replace(L, 1);
return lua_gettop(L); /* return status + all results */