lua

commit 9319735744404831f7153653930d56826a4d2f6a
parent 1ea6e8064cdfa13ba2298783eb87de58568ea998
Author: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date:   Fri,  4 Apr 1997 12:35:17 -0300

using new lib auxlib.

Diffstat:
M
hash.c
 | 
13
+++++--------
M
table.c
 | 
35
+++++++++++++----------------------

2 files changed, 18 insertions(+), 30 deletions(-)
diff --git a/hash.c b/hash.c
@@ -3,7 +3,7 @@
 ** hash manager for lua
 */
 
-char *rcs_hash="$Id: hash.c,v 2.38 1997/03/31 14:02:58 roberto Exp roberto $";
+char *rcs_hash="$Id: hash.c,v 2.39 1997/03/31 14:17:09 roberto Exp roberto $";
 
 
 #include "luamem.h"
@@ -11,6 +11,7 @@ char *rcs_hash="$Id: hash.c,v 2.38 1997/03/31 14:02:58 roberto Exp roberto $";
 #include "hash.h"
 #include "table.h"
 #include "lua.h"
+#include "auxlib.h"
 
 
 #define nhash(t)	((t)->nhash)
@@ -82,7 +83,7 @@ int lua_equalObj (TObject *t1, TObject *t2)
     case LUA_T_FUNCTION: return t1->value.tf == t2->value.tf;
     case LUA_T_CFUNCTION: return fvalue(t1) == fvalue(t2);
     default:
-     lua_error("internal error at `lua_equalObj'");
+     lua_error("internal error in `lua_equalObj'");
      return 0; /* UNREACHEABLE */
   }
 }
@@ -301,12 +302,8 @@ void lua_next (void)
  Hash   *t;
  lua_Object o = lua_getparam(1);
  lua_Object r = lua_getparam(2);
- if (o == LUA_NOOBJECT || r == LUA_NOOBJECT)
-   lua_error ("too few arguments to function `next'");
- if (lua_getparam(3) != LUA_NOOBJECT)
-   lua_error ("too many arguments to function `next'");
- if (!lua_istable(o))
-   lua_error ("first argument of function `next' is not a table");
+ luaL_arg_check(lua_istable(o), "next", 1, "table expected");
+ luaL_arg_check(r != LUA_NOOBJECT, "next", 2, "value expected");
  t = avalue(luaI_Address(o));
  if (lua_isnil(r))
  {
diff --git a/table.c b/table.c
@@ -3,9 +3,10 @@
 ** Module to control static tables
 */
 
-char *rcs_table="$Id: table.c,v 2.64 1997/03/31 14:02:58 roberto Exp roberto $";
+char *rcs_table="$Id: table.c,v 2.65 1997/03/31 14:17:09 roberto Exp roberto $";
 
 #include "luamem.h"
+#include "auxlib.h"
 #include "opcode.h"
 #include "tree.h"
 #include "hash.h"
@@ -203,27 +204,17 @@ void lua_pack (void)
 */
 void luaI_nextvar (void)
 {
- Word next;
- lua_Object o = lua_getparam(1);
- if (o == LUA_NOOBJECT)
-   lua_error("too few arguments to function `nextvar'");
- if (lua_getparam(2) != LUA_NOOBJECT)
-   lua_error("too many arguments to function `nextvar'");
- if (lua_isnil(o))
-   next = 0;
- else if (!lua_isstring(o))
- {
-   lua_error("incorrect argument to function `nextvar'"); 
-   return;  /* to avoid warnings */
- }
- else
-   next = luaI_findsymbolbyname(lua_getstring(o)) + 1;
- while (next < lua_ntable && s_ttype(next) == LUA_T_NIL) next++;
- if (next < lua_ntable)
- {
-  lua_pushstring(lua_table[next].varname->str);
-  luaI_pushobject(&s_object(next));
- }
+  Word next;
+  if (lua_isnil(lua_getparam(1)))
+    next = 0;
+  else 
+    next = luaI_findsymbolbyname(luaL_check_string(1, "nextvar")) + 1;
+  while (next < lua_ntable && s_ttype(next) == LUA_T_NIL)
+    next++;
+  if (next < lua_ntable) {
+    lua_pushstring(lua_table[next].varname->str);
+    luaI_pushobject(&s_object(next));
+  }
 }