common/lualib.c

   1 /*
   2  * lualib.h - useful functions and type for Lua
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  */
  19
  20 #include "luaa.h"
  21
  22 void luaA_checkfunction(lua_State *L, int idx)
  23 {
  24     if(!lua_isfunction(L, idx))
  25         luaA_typerror(L, idx, "function");
  26 }
  27
  28 void luaA_checktable(lua_State *L, int idx)
  29 {
  30     if(!lua_istable(L, idx))
  31         luaA_typerror(L, idx, "table");
  32 }
  33
  34 void luaA_dumpstack(lua_State *L)
  35 {
  36     fprintf(stderr, "-------- Lua stack dump ---------\n");
  37     for(int i = lua_gettop(L); i; i--)
  38     {
  39         int t = lua_type(L, i);
  40         switch (t)
  41         {
  42           case LUA_TSTRING:
  43             fprintf(stderr, "%d: string: `%s'\n", i, lua_tostring(L, i));
  44             break;
  45           case LUA_TBOOLEAN:
  46             fprintf(stderr, "%d: bool:   %s\n", i, lua_toboolean(L, i) ? "true" : "false");
  47             break;
  48           case LUA_TNUMBER:
  49             fprintf(stderr, "%d: number: %g\n", i, lua_tonumber(L, i));
  50             break;
  51           case LUA_TNIL:
  52             fprintf(stderr, "%d: nil\n", i);
  53             break;
  54           default:
  55             fprintf(stderr, "%d: %s\t#%d\t%p\n", i, lua_typename(L, t),
  56                     (int) luaA_rawlen(L, i),
  57                     lua_topointer(L, i));
  58             break;
  59         }
  60     }
  61     fprintf(stderr, "------- Lua stack dump end ------\n");
  62 }