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better error message when light userdata is used instead of a 

full userdata
This commit is contained in:
Roberto Ierusalimschy 2010-11-10 16:06:10 -02:00
parent c97aa9485c
commit 1b54197491
1 changed files with 10 additions and 3 deletions
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13
ldblib.c
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@ -1,5 +1,5 @@
/*
** $Id: ldblib.c,v 1.123 2010/07/02 11:38:13 roberto Exp roberto $
** $Id: ldblib.c,v 1.124 2010/07/25 15:18:19 roberto Exp roberto $
** Interface from Lua to its debug API
** See Copyright Notice in lua.h
*/
@ -44,15 +44,22 @@ static int db_setmetatable (lua_State *L) {
}
static void checkudata (lua_State *L, int narg) {
if (lua_type(L, narg) == LUA_TLIGHTUSERDATA)
luaL_argerror(L, narg, "full userdata expected, got light userdata");
luaL_checktype(L, narg, LUA_TUSERDATA);
}
static int db_getuservalue (lua_State *L) {
luaL_checktype(L, 1, LUA_TUSERDATA);
checkudata(L, 1);
lua_getuservalue(L, 1);
return 1;
}
static int db_setuservalue (lua_State *L) {
luaL_checktype(L, 1, LUA_TUSERDATA);
checkudata(L, 1);
if (!lua_isnoneornil(L, 2))
luaL_checktype(L, 2, LUA_TTABLE);
lua_settop(L, 2);