/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2008 INRIA, 2010 NICTA
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author:  Original author unknown
 *          Quincy Tse <quincy.tse@nicta.com.au>
 */
#ifndef NS3_ABORT_H
#define NS3_ABORT_H

#include "fatal-error.h"

/**
 * \ingroup debugging
 * \brief Abnormal program termination
 *
 * \param msg message to output when this macro is hit.
 *
 * This macro is essentially equivalent to NS_FATAL_ERROR,
 * excepts it prepends the error message with the string
 * "aborted. ". When this macro is hit a runtime, the
 * program will be halted using std::terminate, which
 * triggers clean up code regestered by std::set_terminate.
 *
 * This macro is enable unconditionally in all builds,
 * including debug and optimized builds.
 *
 * \see NS_FATAL_ERROR
 */
#define NS_ABORT_MSG(msg)                                       \
  do {                                                          \
    std::cerr << "aborted. ";                                   \
    NS_FATAL_ERROR (msg);                                       \
  } while (false)


/**
 * \ingroup debugging
 * \brief Abnormal program termination if cond is true.
 *
 * \param cond condition to be evaluated.
 *
 * This is similar to NS_ASSERT(!(cond)), except this check
 * is enabled in all builds. If cond is evaluated to true,
 * the espression evaluating to true is printed to stderr,
 * followed by a call to the NS_FATAL_ERROR_NO_MSG() macro
 * which prints the details of filename and line number to
 * stderr. The program will be halted by calling
 * std::terminate(), triggering any clean up code registered
 * by std::set_terminate (NS3 default is a stream-flushing
 * code, but may be overridden).
 *
 * This macro is enable unconditionally in all builds,
 * including debug and optimized builds.
 */
#define NS_ABORT_IF(cond)                                               \
  do {                                                                  \
    if (cond)                                                           \
      {                                                                 \
        std::cerr << "aborted. cond=\"" << #cond << ", ";               \
        NS_FATAL_ERROR_NO_MSG ();                                       \
      }                                                                 \
  } while (false)

/**
 * \ingroup debugging
 * \brief Abnormal program termination if cond is true.
 *
 * \param cond condition to be evaluated.
 * \param msg message to output when cond is true.
 *
 * This is similar to NS_ASSERT_MSG(!(cond)), except this
 * check is enabled in all builds. If cond is evaluated to
 * true, the espression evaluating to true is printed to
 * stderr, followed by a call to the NS_FATAL_ERROR() macro
 * which prints the user-specified error message, and details
 * of filename and line number to stderr. The program will
 * be halted by calling std::terminate(), triggering any
 * clean up code registered by std::set_terminate (NS3
 * default is a stream-flushing code, but may be overridden).
 *
 * This macro is enable unconditionally in all builds,
 * including debug and optimized builds.
 */
#define NS_ABORT_MSG_IF(cond, msg)                                      \
  do {                                                                  \
    if (cond)                                                           \
      {                                                                 \
        std::cerr << "aborted. cond=\"" << #cond << "\", ";             \
        NS_FATAL_ERROR (msg);                                           \
      }                                                                 \
  } while (false)

/**
 * \ingroup debugging
 * \brief Abnormal program termination if cond is false.
 *
 * \param cond condition to be evaluated.
 *
 * This is an alias for NS_ABORT_IF(!(cond))
 *
 * \see NS_ABORT_IF
 */
#define NS_ABORT_UNLESS(cond)				                            \
  NS_ABORT_IF(!(cond))

/**
 * \ingroup debugging
 * \brief Abnormal program termination if cond is false.
 *
 * \param cond condition to be evaluated.
 * \param msg message to output if cond is false.
 *
 * This is an alias for NS_ABORT_MSG_IF(!(cond))
 *
 * \see NS_ABORT_MSG_IF
 */
#define NS_ABORT_MSG_UNLESS(cond, msg)			                    \
  NS_ABORT_MSG_IF(!(cond),msg)

#endif /* NS3_ABORT_H */
