/*
 *  Copyright (c) 2017, The OpenThread Authors.
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. Neither the name of the copyright holder nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGE.
 */

/**
 * @file
 *   This file includes macros for validating runtime conditions.
 */

#ifndef CODE_UTILS_H
#define CODE_UTILS_H

/**
 *  This checks for the specified condition, which is expected to
 *  commonly be true, and branches to the local label 'exit' if the
 *  condition is false.
 *
 *  @param[in]  aCondition  A Boolean expression to be evaluated.
 *
 */
#define otEXPECT(aCondition) \
    do                       \
    {                        \
        if (!(aCondition))   \
        {                    \
            goto exit;       \
        }                    \
    } while (0)

/**
 *  This checks for the specified condition, which is expected to
 *  commonly be true, and both executes @p anAction and branches to
 *  the local label 'exit' if the condition is false.
 *
 *  @param[in]  aCondition  A Boolean expression to be evaluated.
 *  @param[in]  aAction     An expression or block to execute when the
 *                          assertion fails.
 *
 */
#define otEXPECT_ACTION(aCondition, aAction) \
    do                                       \
    {                                        \
        if (!(aCondition))                   \
        {                                    \
            aAction;                         \
            goto exit;                       \
        }                                    \
    } while (0)

/**
 * Calculates the number of elements in an array.
 *
 * @param[in] aArray  Name of the array variable.
 *
 * @returns Number of elements in the array.
 *
 */
#define otARRAY_LENGTH(aArray) (sizeof(aArray) / sizeof(aArray[0]))

#endif // CODE_UTILS_H