// vim: ft=cpp
#pragma once

/*
 * exceptions --
 *
 *     Romain exception definitions.
 *
 * (c) 2011-2012 Björn Döbel <doebel@os.inf.tu-dresden.de>,
 *     economic rights: Technische Universität Dresden (Germany)
 * This file is part of TUD:OS and distributed under the terms of the
 * GNU General Public License 2.
 * Please see the COPYING-GPL-2 file for details.
 */

#include <l4/sys/kdebug.h>
#include <cstdio> // snprintf etc.
#include <l4/cxx/exceptions> // L4::Base_error

class Romain_error : public L4::Base_exception
{
	public:
		enum {data_size = 100};

	protected:
		char _func[data_size];
		unsigned _line;

	public:
		Romain_error(char const *func, unsigned line)
			: _line(line)
		{
			snprintf(_func, data_size, "At \033[34m%s:%d\033[0m: ", func, line);
			_func[data_size-1] = 0;
		}

		virtual const char *str() const throw() { return _func; }
};


#define _check(cond, message) \
	do { \
		if (cond) { \
			void *pc[10]; \
			int cnt; \
			ERROR() << __FILE__ << " " << __func__ << " " << message; \
			cnt = l4util_backtrace(pc, 10); \
			for (int i = 0; i < cnt; ++i) { \
				ERROR() << std::hex << l4_umword_t(pc[i]); \
			} \
			enter_kdebug(message); \
		} \
	} while (0);


/*
 * Argument error exception. Contains a description about
 * the missing argument and the location where it occurred.
 */
class Argument_error : public Romain_error
{
	char _data[Romain_error::data_size*2];

	public:
		Argument_error(char const *func, unsigned line, char const *msg)
			: Romain_error(func, line)
		{
			snprintf(_data, sizeof(_data), "%s%s\n", _func, msg);
		}

		virtual const char *str() const throw()
		{ return _data; }
};