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/*
* Runtime assertion checking
* (C) 2010 Jack Lloyd
* 2017 Simon Warta (Kullo GmbH)
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#ifndef BOTAN_ASSERTION_CHECKING_H_
#define BOTAN_ASSERTION_CHECKING_H_
#include <botan/build.h>
namespace Botan {
/**
* Called when an assertion fails
*/
BOTAN_NORETURN void BOTAN_PUBLIC_API(2,0) assertion_failure(const char* expr_str,
const char* assertion_made,
const char* func,
const char* file,
int line);
/**
* Make an assertion
*/
#define BOTAN_ASSERT(expr, assertion_made) \
do { \
if(!(expr)) \
Botan::assertion_failure(#expr, \
assertion_made, \
BOTAN_CURRENT_FUNCTION, \
__FILE__, \
__LINE__); \
} while(0)
/**
* Make an assertion
*/
#define BOTAN_ASSERT_NOMSG(expr) \
do { \
if(!(expr)) \
Botan::assertion_failure(#expr, \
"", \
BOTAN_CURRENT_FUNCTION, \
__FILE__, \
__LINE__); \
} while(0)
/**
* Assert that value1 == value2
*/
#define BOTAN_ASSERT_EQUAL(expr1, expr2, assertion_made) \
do { \
if((expr1) != (expr2)) \
Botan::assertion_failure(#expr1 " == " #expr2, \
assertion_made, \
BOTAN_CURRENT_FUNCTION, \
__FILE__, \
__LINE__); \
} while(0)
/**
* Assert that expr1 (if true) implies expr2 is also true
*/
#define BOTAN_ASSERT_IMPLICATION(expr1, expr2, msg) \
do { \
if((expr1) && !(expr2)) \
Botan::assertion_failure(#expr1 " implies " #expr2, \
msg, \
BOTAN_CURRENT_FUNCTION, \
__FILE__, \
__LINE__); \
} while(0)
/**
* Assert that a pointer is not null
*/
#define BOTAN_ASSERT_NONNULL(ptr) \
do { \
if((ptr) == nullptr) \
Botan::assertion_failure(#ptr " is not null", \
"", \
BOTAN_CURRENT_FUNCTION, \
__FILE__, \
__LINE__); \
} while(0)
/**
* Mark variable as unused. Takes between 1 and 9 arguments and marks all as unused,
* e.g. BOTAN_UNUSED(a); or BOTAN_UNUSED(x, y, z);
*/
#define _BOTAN_UNUSED_IMPL1(a) static_cast<void>(a)
#define _BOTAN_UNUSED_IMPL2(a, b) static_cast<void>(a); _BOTAN_UNUSED_IMPL1(b)
#define _BOTAN_UNUSED_IMPL3(a, b, c) static_cast<void>(a); _BOTAN_UNUSED_IMPL2(b, c)
#define _BOTAN_UNUSED_IMPL4(a, b, c, d) static_cast<void>(a); _BOTAN_UNUSED_IMPL3(b, c, d)
#define _BOTAN_UNUSED_IMPL5(a, b, c, d, e) static_cast<void>(a); _BOTAN_UNUSED_IMPL4(b, c, d, e)
#define _BOTAN_UNUSED_IMPL6(a, b, c, d, e, f) static_cast<void>(a); _BOTAN_UNUSED_IMPL5(b, c, d, e, f)
#define _BOTAN_UNUSED_IMPL7(a, b, c, d, e, f, g) static_cast<void>(a); _BOTAN_UNUSED_IMPL6(b, c, d, e, f, g)
#define _BOTAN_UNUSED_IMPL8(a, b, c, d, e, f, g, h) static_cast<void>(a); _BOTAN_UNUSED_IMPL7(b, c, d, e, f, g, h)
#define _BOTAN_UNUSED_IMPL9(a, b, c, d, e, f, g, h, i) static_cast<void>(a); _BOTAN_UNUSED_IMPL8(b, c, d, e, f, g, h, i)
#define _BOTAN_UNUSED_GET_IMPL(_1, _2, _3, _4, _5, _6, _7, _8, _9, IMPL_NAME, ...) IMPL_NAME
#define BOTAN_UNUSED(...) _BOTAN_UNUSED_GET_IMPL(__VA_ARGS__, \
_BOTAN_UNUSED_IMPL9, \
_BOTAN_UNUSED_IMPL8, \
_BOTAN_UNUSED_IMPL7, \
_BOTAN_UNUSED_IMPL6, \
_BOTAN_UNUSED_IMPL5, \
_BOTAN_UNUSED_IMPL4, \
_BOTAN_UNUSED_IMPL3, \
_BOTAN_UNUSED_IMPL2, \
_BOTAN_UNUSED_IMPL1, \
unused dummy rest value \
) /* we got an one of _BOTAN_UNUSED_IMPL*, now call it */ (__VA_ARGS__)
}
#endif
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