18ae1504ea
Weirdly enough, this version of XCode seems to have static_assert() even when NOT using C++11. This is totally weird and counter intuitive since static_assert() is supposed to be C++11 onlky feature. Can XCode stop using future, please? :)
69 lines
2.6 KiB
C++
69 lines
2.6 KiB
C++
/*
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* Copyright 2011-2016 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __UTIL_STATIC_ASSERT_H__
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#define __UTIL_STATIC_ASSERT_H__
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CCL_NAMESPACE_BEGIN
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/* TODO(sergey): In theory CUDA might work with own static assert
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* implementation since it's just pure C++.
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*/
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#ifndef __KERNEL_GPU__
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# if (__cplusplus > 199711L) || (defined(_MSC_VER) && _MSC_VER >= 1800)
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/* C++11 has built-in static_assert() */
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# elif defined(static_assert)
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/* Some platforms might have static_assert() defined even tho their
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* C++ support wouldn't be declared to be C++11.
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*/
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# else /* C++11 or MSVC2015 */
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template <bool Test> class StaticAssertFailure;
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template <> class StaticAssertFailure<true> {};
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# define _static_assert_private_glue_impl(A, B) A ## B
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# define _static_assert_glue(A, B) _static_assert_private_glue_impl(A, B)
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# ifdef __COUNTER__
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# define static_assert(condition, message) \
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enum {_static_assert_glue(q_static_assert_result, __COUNTER__) = sizeof(StaticAssertFailure<!!(condition)>)} // NOLINT
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# else /* __COUNTER__ */
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# define static_assert(condition, message) \
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enum {_static_assert_glue(q_static_assert_result, __LINE__) = sizeof(StaticAssertFailure<!!(condition)>)} // NOLINT
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# endif /* __COUNTER__ */
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# endif /* C++11 or MSVC2015 */
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#else /* __KERNEL_GPU__ */
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# define static_assert(statement, message)
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#endif /* __KERNEL_GPU__ */
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/* TODO(sergey): For until C++11 is a bare minimum for us,
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* we do a bit of a trickery to show meaningful message so
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* it's more or less clear what's wrong when building without
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* C++11.
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*
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* The thing here is: our non-C++11 implementation doesn't
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* have a way to print any message after preprocessor
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* substitution so we rely on the message which is passed to
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* static_assert() since that's the only message visible when
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* compilation fails.
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*
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* After C++11 bump it should be possible to glue structure
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* name to the error message,
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*/
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# define static_assert_align(st, align) \
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static_assert((sizeof(st) % (align) == 0), "Structure must be strictly aligned") // NOLINT
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CCL_NAMESPACE_END
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#endif /* __UTIL_STATIC_ASSERT_H__ */
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