mirror of https://gitee.com/bigwinds/arangodb
46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2019 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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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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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Markus Pfeiffer
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_META_STATIC_ASSERT_SIZE_H
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#define ARANGODB_META_STATIC_ASSERT_SIZE_H 1
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namespace arangodb {
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namespace meta {
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namespace details {
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// This template function allows to statically assert the size of a type, while giving
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// useful error messages about the actual sizes in question.
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//
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// This is for example useful to make sure methods are checked if someone adds member
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// variables to classes or structs
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template <typename Scrutinee, std::size_t ExpectedSize, std::size_t Size = sizeof(Scrutinee)>
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void static_assert_size() {
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static_assert(ExpectedSize == Size, "Type does not have the expected size.");
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}
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} // namespace details
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} // namespace meta
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} // namespace arangodb
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#endif
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