api_signal_base.c

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/*****************************************************************************
 Freeciv - Copyright (C) 2005 - The Freeciv Project
   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, 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.
*****************************************************************************/
 
#ifdef HAVE_CONFIG_H
#include <fc_config.h>
#endif
 
/* common/scriptcore */
#include "luascript_signal.h"
#include "luascript.h"
 
#include "api_signal_base.h"
 
/**********************************************************************/
void api_signal_connect(lua_State *L, const char *signal_name,
                               const char *callback_name)
{
  struct fc_lua *fcl;
 
  LUASCRIPT_CHECK_STATE(L);
  LUASCRIPT_CHECK_ARG_NIL(L, signal_name, 2, string);
  LUASCRIPT_CHECK_ARG_NIL(L, callback_name, 3, string);
 
  fcl = luascript_get_fcl(L);
 
  LUASCRIPT_CHECK(L, fcl != nullptr, "Undefined Freeciv lua state!");
 
  luascript_signal_callback(fcl, signal_name, callback_name, TRUE);
}
 
/**********************************************************************/
void api_signal_remove(lua_State *L, const char *signal_name,
                       const char *callback_name)
{
  struct fc_lua *fcl;
 
  LUASCRIPT_CHECK_STATE(L);
  LUASCRIPT_CHECK_ARG_NIL(L, signal_name, 2, string);
  LUASCRIPT_CHECK_ARG_NIL(L, callback_name, 3, string);
 
  fcl = luascript_get_fcl(L);
 
  LUASCRIPT_CHECK(L, fcl != nullptr, "Undefined Freeciv lua state!");
 
  luascript_signal_callback(fcl, signal_name, callback_name, FALSE);
}
 
/**********************************************************************/
bool api_signal_defined(lua_State *L, const char *signal_name,
                        const char *callback_name)
{
  struct fc_lua *fcl;
 
  LUASCRIPT_CHECK_STATE(L, FALSE);
  LUASCRIPT_CHECK_ARG_NIL(L, signal_name, 2, string, FALSE);
  LUASCRIPT_CHECK_ARG_NIL(L, callback_name, 3, string, FALSE);
 
  fcl = luascript_get_fcl(L);
 
  LUASCRIPT_CHECK(L, fcl != nullptr, "Undefined Freeciv lua state!", FALSE);
 
  return luascript_signal_callback_defined(fcl, signal_name, callback_name);
}
 
/**********************************************************************/
const char *api_signal_callback_by_index(lua_State *L,
                                         const char *signal_name,
                                         int sindex)
{
  struct fc_lua *fcl;
 
  LUASCRIPT_CHECK_STATE(L, nullptr);
  LUASCRIPT_CHECK_ARG_NIL(L, signal_name, 2, string, nullptr);
 
  fcl = luascript_get_fcl(L);
 
  LUASCRIPT_CHECK(L, fcl != nullptr,
                  "Undefined Freeciv lua state!", nullptr);
 
  return luascript_signal_callback_by_index(fcl, signal_name, sindex);
}
 
/**********************************************************************/
const char *api_signal_by_index(lua_State *L, int sindex)
{
  struct fc_lua *fcl;
 
  LUASCRIPT_CHECK_STATE(L, nullptr);
 
  fcl = luascript_get_fcl(L);
 
  LUASCRIPT_CHECK(L, fcl != nullptr,
                  "Undefined Freeciv lua state!", nullptr);
 
  return luascript_signal_by_index(fcl, sindex);
}