/* dzl-version.h.in
 *
 * Copyright (C) 2017 Christian Hergert <chergert@redhat.com>
 *
 * 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 3 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef DZL_VERSION_H
#define DZL_VERSION_H

#if !defined(DAZZLE_INSIDE) && !defined(DAZZLE_COMPILATION)
#error "Only <dazzle.h> can be included directly."
#endif

/**
 * SECTION:dzl-version
 * @short_description: Dazzle version checking
 *
 * Dazzle provides macros to check the version of the library at compile-time
 */

/**
 * DZL_MAJOR_VERSION:
 *
 * Dzl major version component (e.g. 1 if %DZL_VERSION is 1.2.3)
 */
#define DZL_MAJOR_VERSION              (@DZL_MAJOR_VERSION@)

/**
 * DZL_MINOR_VERSION:
 *
 * Dzl minor version component (e.g. 2 if %DZL_VERSION is 1.2.3)
 */
#define DZL_MINOR_VERSION              (@DZL_MINOR_VERSION@)

/**
 * DZL_MICRO_VERSION:
 *
 * Dzl micro version component (e.g. 3 if %DZL_VERSION is 1.2.3)
 */
#define DZL_MICRO_VERSION              (@DZL_MICRO_VERSION@)

/**
 * DZL_VERSION
 *
 * Dzl version.
 */
#define DZL_VERSION                    (@DZL_VERSION@)

/**
 * DZL_VERSION_S:
 *
 * Dazzle version, encoded as a string, useful for printing and
 * concatenation.
 */
#define DZL_VERSION_S                  "@DZL_VERSION@"

#define DZL_ENCODE_VERSION(major,minor,micro) \
        ((major) << 24 | (minor) << 16 | (micro) << 8)

/**
 * DZL_VERSION_HEX:
 *
 * Dazzle version, encoded as an hexadecimal number, useful for
 * integer comparisons.
 */
#define DZL_VERSION_HEX \
        (DZL_ENCODE_VERSION (DZL_MAJOR_VERSION, DZL_MINOR_VERSION, DZL_MICRO_VERSION))

/**
 * DZL_CHECK_VERSION:
 * @major: required major version
 * @minor: required minor version
 * @micro: required micro version
 *
 * Compile-time version checking. Evaluates to %TRUE if the version
 * of dazzle is greater than the required one.
 */
#define DZL_CHECK_VERSION(major,minor,micro)   \
        (DZL_MAJOR_VERSION > (major) || \
         (DZL_MAJOR_VERSION == (major) && DZL_MINOR_VERSION > (minor)) || \
         (DZL_MAJOR_VERSION == (major) && DZL_MINOR_VERSION == (minor) && \
          DZL_MICRO_VERSION >= (micro)))

#endif /* DZL_VERSION_H */