awesome/common/lualib.c

/*
 * lualib.h - useful functions and type for Lua
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 */

#include "luaa.h"

void luaA_checkfunction(lua_State *L, int idx)
{
    if(!lua_isfunction(L, idx))
        luaA_typerror(L, idx, "function");
}

void luaA_checktable(lua_State *L, int idx)
{
    if(!lua_istable(L, idx))
        luaA_typerror(L, idx, "table");
}

void luaA_dumpstack(lua_State *L)
{
    fprintf(stderr, "-------- Lua stack dump ---------\n");
    for(int i = lua_gettop(L); i; i--)
    {
        int t = lua_type(L, i);
        switch (t)
        {
          case LUA_TSTRING:
            fprintf(stderr, "%d: string: `%s'\n", i, lua_tostring(L, i));
            break;
          case LUA_TBOOLEAN:
            fprintf(stderr, "%d: bool:   %s\n", i, lua_toboolean(L, i) ? "true" : "false");
            break;
          case LUA_TNUMBER:
            fprintf(stderr, "%d: number: %g\n", i, lua_tonumber(L, i));
            break;
          case LUA_TNIL:
            fprintf(stderr, "%d: nil\n", i);
            break;
          default:
            fprintf(stderr, "%d: %s\t#%d\t%p\n", i, lua_typename(L, t),
                    (int) luaA_rawlen(L, i),
                    lua_topointer(L, i));
            break;
        }
    }
    fprintf(stderr, "------- Lua stack dump end ------\n");
}