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/******************************************************************************/
/*!
@file verify.h
@author hathach (tinyusb.org)
@section LICENSE
Software License Agreement (BSD License)
Copyright (c) 2013, K. Townsend (microBuilder.eu)
Copyright (c) 2018, Adafruit Industries (adafruit.com)
Copyright (c) 2016, hathach (tinyusb.org)
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 holders 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 ''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 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.
*/
/******************************************************************************/
#ifndef _VERIFY_H_
#define _VERIFY_H_
#include "compiler_macro.h"
#ifdef __cplusplus
extern "C"
{
#endif
//--------------------------------------------------------------------+
// Compile-time Assert
//--------------------------------------------------------------------+
#if defined __COUNTER__ && __COUNTER__ != __COUNTER__
#define _VERIFY_COUNTER __COUNTER__
#else
#define _VERIFY_COUNTER __LINE__
#endif
#define VERIFY_STATIC(const_expr) enum { XSTRING_CONCAT_(static_verify_, _VERIFY_COUNTER) = 1/(!!(const_expr)) }
//--------------------------------------------------------------------+
// VERIFY Helper
//--------------------------------------------------------------------+
#if CFG_DEBUG >= 1
#define VERIFY_MESS(_status, _funcstr) \
do { \
const char* (*_fstr)(int32_t) = _funcstr;\
printf("%s: %d: verify failed, error = ", __PRETTY_FUNCTION__, __LINE__);\
if (_fstr) printf(_fstr(_status)); else printf("%d", _status);\
printf("\n");\
}while(0)
#else
#define VERIFY_MESS(_status, _funcstr)
#endif
#define VERIFY_ERR_DEF(_status, _ret, _funcstr) \
if ( 0 != _status ) { \
VERIFY_MESS(_status, _funcstr); \
return _ret; \
}
// Helper to implement optional parameter for VERIFY Macro family
#define _GET_3RD_ARG(arg1, arg2, arg3, ...) arg3
/*------------------------------------------------------------------*/
/* VERIFY STATUS
* - VERIFY_ERR_1ARGS : return status of condition if failed
* - VERIFY_ERR_2ARGS : return provided status code if failed
*------------------------------------------------------------------*/
#define VERIFY_ERR_1ARGS(_exp, _funcstr) \
do { \
int32_t _status = (int32_t)(_exp); \
VERIFY_ERR_DEF(_status, _status, _funcstr); \
} while(0)
#define VERIFY_ERR_2ARGS(_exp, _ret, _funcstr) \
do { \
int32_t _status = (int32_t)(_exp); \
VERIFY_ERR_DEF(_status, _ret, _funcstr); \
} while(0)
/**
* Check if status is success (zero), otherwise return
* - status value if called with 1 parameter e.g VERIFY_STATUS(status)
* - 2 parameter if called with 2 parameters e.g VERIFY_STATUS(status, errorcode)
*/
#define VERIFY_STATUS(...) _GET_3RD_ARG(__VA_ARGS__, VERIFY_ERR_2ARGS, VERIFY_ERR_1ARGS)(__VA_ARGS__, dbg_err_str)
#define VERIFY_ERROR(...) _GET_3RD_ARG(__VA_ARGS__, VERIFY_ERR_2ARGS, VERIFY_ERR_1ARGS)(__VA_ARGS__, NULL)
/*------------------------------------------------------------------*/
/* VERIFY
* - VERIFY_1ARGS : return condition if failed (false)
* - VERIFY_2ARGS : return provided value if failed
*------------------------------------------------------------------*/
#define VERIFY_1ARGS(cond) if (!(cond)) return false;
#define VERIFY_2ARGS(cond, _error) if (!(cond)) return _error;
/**
* Check if condition is success (true), otherwise return
* - false value if called with 1 parameter e.g VERIFY(condition)
* - 2 parameter if called with 2 parameters e.g VERIFY(condition, errorcode)
*/
#define VERIFY(...) _GET_3RD_ARG(__VA_ARGS__, VERIFY_2ARGS, VERIFY_1ARGS)(__VA_ARGS__)
// TODO VERIFY with final statement
#ifdef __cplusplus
}
#endif
#endif /* _VERIFY_H_ */
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