/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser 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.
*/

#ifndef C_TYPES_H_
#define C_TYPES_H_

extern "C" {
#include "lua.h"
}

#include <iostream>

struct EnumString
{
	int num;
	const char *str;
};

class StackUnroller
{
private:
	lua_State *m_lua;
	int m_original_top;
public:
	StackUnroller(lua_State *L):
		m_lua(L),
		m_original_top(-1)
	{
		m_original_top = lua_gettop(m_lua); // store stack height
	}
	~StackUnroller()
	{
		lua_settop(m_lua, m_original_top); // restore stack height
	}
};

class ModNameStorer
{
private:
	lua_State *L;
public:
	ModNameStorer(lua_State *L_, const std::string modname):
		L(L_)
	{
		// Store current modname in registry
		lua_pushstring(L, modname.c_str());
		lua_setfield(L, LUA_REGISTRYINDEX, "minetest_current_modname");
	}
	~ModNameStorer()
	{
		// Clear current modname in registry
		lua_pushnil(L);
		lua_setfield(L, LUA_REGISTRYINDEX, "minetest_current_modname");
	}
};

class LuaError : public std::exception
{
public:
	LuaError(lua_State *L, const std::string &s);

	virtual ~LuaError() throw()
	{}
	virtual const char * what() const throw()
	{
		return m_s.c_str();
	}
	std::string m_s;
};


extern EnumString es_ItemType[];

#endif /* C_TYPES_H_ */