apicheck.h

/*
 * apicheck.h
 * Copyright (C) 2017 Adrian Perez <aperez@igalia.com>
 *
 * Distributed under terms of the MIT license.
 */

#ifndef APICHECK_H
#define APICHECK_H

#include <stdlib.h>
#include <stdio.h>

#ifndef API_CHECK_OUTPUT_FILE
#define API_CHECK_OUTPUT_FILE stderr
#endif /* !API_CHECK_OUTPUT_FILE */

#ifndef API_CHECK_SHOULD_ABORT
#define API_CHECK_SHOULD_ABORT 0
#endif /* !API_CHECK_SHOULD_ABORT */

#if defined(API_CHECK_DISABLE) && API_CHECK_DISABLE

#define api_check_return(expr)          ((void) (expr))
#define api_check_return_val(expr, val) ((void) (expr), (void) (val))

#else

#define api_check_return_val(expr, val) do { \
        if (!(expr)) { \
            FILE* __api_check_output_ ## __LINE__ = (API_CHECK_OUTPUT_FILE); \
            if (!__api_check_output_ ## __LINE__) \
                __api_check_output_ ## __LINE__ = stderr; \
            fprintf (__api_check_output_ ## __LINE__, \
                     "API check '%s' failed at %s (%s:%d)\n", \
                     #expr, __func__, __FILE__, __LINE__); \
            fflush (__api_check_output_ ## __LINE__); \
            if (!!(API_CHECK_SHOULD_ABORT)) abort (); \
            return val; \
        } \
    } while (0)

#define api_check_return(expr) api_check_return_val(expr,)

#endif /* API_CHECK_DISABLE */

#endif /* !APICHECK_H */