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function "type" now returns a second result: the tag of the type, 

so lua can discriminate different kinds of user data.
This commit is contained in:
Roberto Ierusalimschy 1995-03-17 17:42:20 -03:00
parent 3c67d2595b
commit 36b6fdda83
1 changed files with 5 additions and 2 deletions
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7
inout.c
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@ -5,7 +5,7 @@
** Also provides some predefined lua functions. ** Also provides some predefined lua functions.
*/ */
char *rcs_inout="$Id: inout.c,v 2.16 1994/12/20 21:20:36 roberto Exp celes $"; char *rcs_inout="$Id: inout.c,v 2.17 1995/03/17 20:27:11 celes Exp roberto $";
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
@ -235,9 +235,11 @@ void lua_print (void)
void luaI_type (void) void luaI_type (void)
{ {
lua_Object o = lua_getparam(1); lua_Object o = lua_getparam(1);
int t;
if (o == LUA_NOOBJECT) if (o == LUA_NOOBJECT)
lua_error("no parameter to function 'type'"); lua_error("no parameter to function 'type'");
switch (lua_type(o)) t = lua_type(o);
switch (t)
{ {
case LUA_T_NIL : case LUA_T_NIL :
lua_pushliteral("nil"); lua_pushliteral("nil");
@ -261,6 +263,7 @@ void luaI_type (void)
lua_pushliteral("userdata"); lua_pushliteral("userdata");
break; break;
} }
lua_pushnumber(t);
} }
/* /*