mirror of
https://github.com/ecency/ecency-mobile.git
synced 2024-12-21 04:11:50 +03:00
307 lines
16 KiB
C++
307 lines
16 KiB
C++
/*!
|
|
@file
|
|
Defines macros to perform different kinds of assertions.
|
|
|
|
@copyright Louis Dionne 2013-2016
|
|
Distributed under the Boost Software License, Version 1.0.
|
|
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
|
|
*/
|
|
|
|
#ifndef BOOST_HANA_ASSERT_HPP
|
|
#define BOOST_HANA_ASSERT_HPP
|
|
|
|
#include <boost/hana/concept/constant.hpp>
|
|
#include <boost/hana/config.hpp>
|
|
#include <boost/hana/detail/preprocessor.hpp>
|
|
#include <boost/hana/if.hpp>
|
|
#include <boost/hana/value.hpp>
|
|
|
|
#include <cstdio>
|
|
#include <cstdlib>
|
|
|
|
|
|
#if defined(BOOST_HANA_DOXYGEN_INVOKED)
|
|
//! @ingroup group-assertions
|
|
//! Expands to a runtime assertion.
|
|
//!
|
|
//! Given a condition known at runtime, this macro expands to a runtime
|
|
//! assertion similar to the `assert` macro. The provided condition must
|
|
//! be explicitly convertible to a `bool`, and it must not be a model of
|
|
//! the `Constant` concept. If the condition is a `Constant`, a static
|
|
//! assertion will be triggered, asking you to use the
|
|
//! `BOOST_HANA_CONSTANT_ASSERT` macro instead.
|
|
//!
|
|
//! @note
|
|
//! This macro may only be used at function scope.
|
|
# define BOOST_HANA_RUNTIME_ASSERT(condition) unspecified
|
|
|
|
//! @ingroup group-assertions
|
|
//! Equivalent to `BOOST_HANA_RUNTIME_ASSERT`, but allows providing a
|
|
//! custom failure message.
|
|
//!
|
|
//! @warning
|
|
//! Conditions that contain multiple comma-separated elements should be
|
|
//! parenthesized.
|
|
# define BOOST_HANA_RUNTIME_ASSERT_MSG(condition, message) unspecified
|
|
|
|
//! @ingroup group-assertions
|
|
//! Compile-time assertion for `Constant`s.
|
|
//!
|
|
//! Given a condition known at compile-time in the form of a `Constant`,
|
|
//! this macro expands to a compile-time assertion similar to a `static_assert`.
|
|
//! The provided condition must be a model of the `Constant` concept, in
|
|
//! which case its value is retrieved using `hana::value` and then converted
|
|
//! to a `bool`. If the condition is not a `Constant`, a static assertion
|
|
//! will be triggered, asking you to use the `BOOST_HANA_RUNTIME_ASSERT`
|
|
//! macro instead.
|
|
//!
|
|
//! This macro may be used at global/namespace scope and function scope
|
|
//! only; it may not be used at class scope. Note that the condition may
|
|
//! never be evaluated at runtime. Hence, any side effect may not take
|
|
//! place (but you shouldn't rely on side effects inside assertions anyway).
|
|
# define BOOST_HANA_CONSTANT_ASSERT(condition) unspecified
|
|
|
|
//! @ingroup group-assertions
|
|
//! Equivalent to `BOOST_HANA_CONSTANT_ASSERT`, but allows providing a
|
|
//! custom failure message.
|
|
//!
|
|
//! @warning
|
|
//! Conditions that contain multiple comma-separated elements should be
|
|
//! parenthesized.
|
|
# define BOOST_HANA_CONSTANT_ASSERT_MSG(condition, message) unspecified
|
|
|
|
//! @ingroup group-assertions
|
|
//! Expands to the strongest form of assertion possible for the given
|
|
//! condition.
|
|
//!
|
|
//! Given a condition, `BOOST_HANA_ASSERT` expands either to a compile-time
|
|
//! or to a runtime assertion, depending on whether the value of the
|
|
//! condition is known at compile-time or at runtime. Compile-time
|
|
//! assertions are always preferred over runtime assertions. If the
|
|
//! condition is a model of the `Constant` concept, its value (retrievable
|
|
//! with `hana::value`) is assumed to be explicitly convertible to `bool`,
|
|
//! and a compile-time assertion is performed on it. Otherwise, the
|
|
//! condition itself is assumed to be explicitly convertible to `bool`,
|
|
//! and a runtime assertion is performed on it.
|
|
//!
|
|
//! If the assertion can be carried out at compile-time, the condition
|
|
//! is not guaranteed to be evaluated at runtime at all (but it may).
|
|
//! Hence, in general, you shouldn't rely on side effects that take place
|
|
//! inside an assertion.
|
|
//!
|
|
//! @note
|
|
//! This macro may only be used at function scope.
|
|
# define BOOST_HANA_ASSERT(condition) unspecified
|
|
|
|
//! @ingroup group-assertions
|
|
//! Equivalent to `BOOST_HANA_ASSERT`, but allows providing a custom
|
|
//! failure message.
|
|
//!
|
|
//! @warning
|
|
//! Conditions that contain multiple comma-separated elements should be
|
|
//! parenthesized.
|
|
# define BOOST_HANA_ASSERT_MSG(condition, message) unspecified
|
|
|
|
//! @ingroup group-assertions
|
|
//! Expands to a static assertion or a runtime assertion, depending on
|
|
//! whether `constexpr` lambdas are supported.
|
|
//!
|
|
//! This macro is used to assert on a condition that would be a constant
|
|
//! expression if constexpr lambdas were supported. Right now, constexpr
|
|
//! lambdas are not supported, and this is always a runtime assertion.
|
|
//! Specifically, this is equivalent to `BOOST_HANA_RUNTIME_ASSERT`.
|
|
# define BOOST_HANA_CONSTEXPR_ASSERT(condition) unspecified
|
|
|
|
//! @ingroup group-assertions
|
|
//! Equivalent to `BOOST_HANA_CONSTEXPR_ASSERT`, but allows providing a
|
|
//! custom failure message.
|
|
# define BOOST_HANA_CONSTEXPR_ASSERT_MSG(condition, message) unspecified
|
|
|
|
#elif defined(BOOST_HANA_CONFIG_DISABLE_ASSERTIONS)
|
|
|
|
# define BOOST_HANA_CONSTANT_ASSERT(...) /* nothing */
|
|
# define BOOST_HANA_CONSTANT_ASSERT_MSG(condition, message) /* nothing */
|
|
|
|
# define BOOST_HANA_RUNTIME_ASSERT(...) /* nothing */
|
|
# define BOOST_HANA_RUNTIME_ASSERT_MSG(condition, message) /* nothing */
|
|
|
|
# define BOOST_HANA_ASSERT(...) /* nothing */
|
|
# define BOOST_HANA_ASSERT_MSG(condition, message) /* nothing */
|
|
|
|
# define BOOST_HANA_CONSTEXPR_ASSERT(...) /* nothing */
|
|
# define BOOST_HANA_CONSTEXPR_ASSERT_MSG(condition, message) /* nothing */
|
|
|
|
#else
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// BOOST_HANA_RUNTIME_ASSERT and BOOST_HANA_RUNTIME_ASSERT_MSG
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
# define BOOST_HANA_RUNTIME_ASSERT_MSG(condition, message) \
|
|
BOOST_HANA_RUNTIME_CHECK_MSG(condition, message) \
|
|
/**/
|
|
|
|
# define BOOST_HANA_RUNTIME_ASSERT(...) \
|
|
BOOST_HANA_RUNTIME_CHECK(__VA_ARGS__) \
|
|
/**/
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// BOOST_HANA_CONSTANT_ASSERT and BOOST_HANA_CONSTANT_ASSERT_MSG
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
# define BOOST_HANA_CONSTANT_ASSERT_MSG(condition, message) \
|
|
BOOST_HANA_CONSTANT_CHECK_MSG(condition, message) \
|
|
/**/
|
|
|
|
# define BOOST_HANA_CONSTANT_ASSERT(...) \
|
|
BOOST_HANA_CONSTANT_CHECK(__VA_ARGS__) \
|
|
/**/
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// BOOST_HANA_ASSERT and BOOST_HANA_ASSERT_MSG
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
# define BOOST_HANA_ASSERT_MSG(condition, message) \
|
|
BOOST_HANA_CHECK_MSG(condition, message) \
|
|
/**/
|
|
|
|
# define BOOST_HANA_ASSERT(...) \
|
|
BOOST_HANA_CHECK(__VA_ARGS__) \
|
|
/**/
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// BOOST_HANA_CONSTEXPR_ASSERT and BOOST_HANA_CONSTEXPR_ASSERT_MSG
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
# define BOOST_HANA_CONSTEXPR_ASSERT_MSG(condition, message) \
|
|
BOOST_HANA_CONSTEXPR_CHECK_MSG(condition, message) \
|
|
/**/
|
|
|
|
# define BOOST_HANA_CONSTEXPR_ASSERT(...) \
|
|
BOOST_HANA_CONSTEXPR_CHECK(__VA_ARGS__) \
|
|
/**/
|
|
|
|
#endif
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// BOOST_HANA_RUNTIME_CHECK and BOOST_HANA_RUNTIME_CHECK_MSG
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
//! @ingroup group-assertions
|
|
//! Equivalent to `BOOST_HANA_RUNTIME_ASSERT_MSG`, but not influenced by the
|
|
//! `BOOST_HANA_CONFIG_DISABLE_ASSERTIONS` config macro. For internal use only.
|
|
# define BOOST_HANA_RUNTIME_CHECK_MSG(condition, message) \
|
|
do { \
|
|
auto __hana_tmp = condition; \
|
|
static_assert(!::boost::hana::Constant<decltype(__hana_tmp)>::value,\
|
|
"the expression (" # condition ") yields a Constant; " \
|
|
"use BOOST_HANA_CONSTANT_ASSERT instead"); \
|
|
\
|
|
if (!static_cast<bool>(__hana_tmp)) { \
|
|
::std::fprintf(stderr, "Assertion failed: " \
|
|
"(%s), function %s, file %s, line %i.\n", \
|
|
message, __func__, __FILE__, __LINE__); \
|
|
::std::abort(); \
|
|
} \
|
|
} while (false); \
|
|
static_assert(true, "force trailing semicolon") \
|
|
/**/
|
|
|
|
//! @ingroup group-assertions
|
|
//! Equivalent to `BOOST_HANA_RUNTIME_ASSERT`, but not influenced by the
|
|
//! `BOOST_HANA_CONFIG_DISABLE_ASSERTIONS` config macro. For internal use only.
|
|
# define BOOST_HANA_RUNTIME_CHECK(...) \
|
|
BOOST_HANA_RUNTIME_CHECK_MSG( \
|
|
(__VA_ARGS__), \
|
|
BOOST_HANA_PP_STRINGIZE(__VA_ARGS__) \
|
|
) \
|
|
/**/
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// BOOST_HANA_CONSTANT_CHECK and BOOST_HANA_CONSTANT_CHECK_MSG
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
//! @ingroup group-assertions
|
|
//! Equivalent to `BOOST_HANA_CONSTANT_ASSERT_MSG`, but not influenced by the
|
|
//! `BOOST_HANA_CONFIG_DISABLE_ASSERTIONS` config macro. For internal use only.
|
|
# define BOOST_HANA_CONSTANT_CHECK_MSG(condition, message) \
|
|
auto BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__) = condition; \
|
|
static_assert(::boost::hana::Constant< \
|
|
decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__)) \
|
|
>::value, \
|
|
"the expression " # condition " does not yield a Constant; " \
|
|
"use BOOST_HANA_RUNTIME_ASSERT instead"); \
|
|
static_assert(::boost::hana::value< \
|
|
decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__)) \
|
|
>(), message); \
|
|
static_assert(true, "force trailing semicolon") \
|
|
/**/
|
|
|
|
//! @ingroup group-assertions
|
|
//! Equivalent to `BOOST_HANA_CONSTANT_ASSERT`, but not influenced by the
|
|
//! `BOOST_HANA_CONFIG_DISABLE_ASSERTIONS` config macro. For internal use only.
|
|
# define BOOST_HANA_CONSTANT_CHECK(...) \
|
|
BOOST_HANA_CONSTANT_CHECK_MSG( \
|
|
(__VA_ARGS__), \
|
|
BOOST_HANA_PP_STRINGIZE(__VA_ARGS__) \
|
|
) \
|
|
/**/
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// BOOST_HANA_CHECK and BOOST_HANA_CHECK_MSG
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
//! @ingroup group-assertions
|
|
//! Equivalent to `BOOST_HANA_ASSERT_MSG`, but not influenced by the
|
|
//! `BOOST_HANA_CONFIG_DISABLE_ASSERTIONS` config macro. For internal use only.
|
|
# define BOOST_HANA_CHECK_MSG(condition, message) \
|
|
do { \
|
|
auto __hana_tmp = condition; \
|
|
::boost::hana::if_(::boost::hana::bool_c< \
|
|
::boost::hana::Constant<decltype(__hana_tmp)>::value>, \
|
|
[](auto expr) { \
|
|
static_assert(::boost::hana::value<decltype(expr)>(), \
|
|
message); \
|
|
}, \
|
|
[](auto expr) { \
|
|
if (!static_cast<bool>(expr)) { \
|
|
::std::fprintf(stderr, "Assertion failed: " \
|
|
"(%s), function %s, file %s, line %i.\n", \
|
|
message, __func__, __FILE__, __LINE__); \
|
|
::std::abort(); \
|
|
} \
|
|
} \
|
|
)(__hana_tmp); \
|
|
} while (false); \
|
|
static_assert(true, "force trailing semicolon") \
|
|
/**/
|
|
|
|
//! @ingroup group-assertions
|
|
//! Equivalent to `BOOST_HANA__ASSERT`, but not influenced by the
|
|
//! `BOOST_HANA_CONFIG_DISABLE_ASSERTIONS` config macro. For internal use only.
|
|
# define BOOST_HANA_CHECK(...) \
|
|
BOOST_HANA_CHECK_MSG( \
|
|
(__VA_ARGS__), \
|
|
BOOST_HANA_PP_STRINGIZE(__VA_ARGS__) \
|
|
) \
|
|
/**/
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// BOOST_HANA_CONSTEXPR_CHECK and BOOST_HANA_CONSTEXPR_CHECK_MSG
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
//! @ingroup group-assertions
|
|
//! Equivalent to `BOOST_HANA_CONSTEXPR_ASSERT_MSG`, but not influenced by the
|
|
//! `BOOST_HANA_CONFIG_DISABLE_ASSERTIONS` config macro. For internal use only.
|
|
# define BOOST_HANA_CONSTEXPR_CHECK_MSG(condition, message) \
|
|
BOOST_HANA_RUNTIME_CHECK_MSG(condition, message) \
|
|
/**/
|
|
|
|
//! @ingroup group-assertions
|
|
//! Equivalent to `BOOST_HANA_CONSTEXPR_ASSERT`, but not influenced by the
|
|
//! `BOOST_HANA_CONFIG_DISABLE_ASSERTIONS` config macro. For internal use only.
|
|
# define BOOST_HANA_CONSTEXPR_CHECK(...) \
|
|
BOOST_HANA_CONSTEXPR_CHECK_MSG( \
|
|
(__VA_ARGS__), \
|
|
BOOST_HANA_PP_STRINGIZE(__VA_ARGS__) \
|
|
) \
|
|
/**/
|
|
|
|
#endif // !BOOST_HANA_ASSERT_HPP
|