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187a4b82c2
This provides ue2::small_vector<T, N, Alloc> which will fall back to std::vector<T, Alloc> where the Boost version is too old or not present.
64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
/*
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* Copyright (c) 2017, Intel Corporation
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef UTIL_SMALL_VECTOR_H
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#define UTIL_SMALL_VECTOR_H
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#include <vector>
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#include <boost/version.hpp>
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#if BOOST_VERSION >= 105800
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# define HAVE_BOOST_CONTAINER_SMALL_VECTOR
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#endif
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#if defined(HAVE_BOOST_CONTAINER_SMALL_VECTOR)
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# include <boost/container/small_vector.hpp>
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#endif
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namespace ue2 {
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#if defined(HAVE_BOOST_CONTAINER_SMALL_VECTOR)
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template <class T, std::size_t N,
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typename Allocator = boost::container::new_allocator<T>>
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using small_vector = boost::container::small_vector<T, N, Allocator>;
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#else
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// Boost version isn't new enough, fall back to just using std::vector.
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template <class T, std::size_t N,
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typename Allocator = boost::container::new_allocator<T>>
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using small_vector = std::vector<T, Allocator>;
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#endif // HAVE_BOOST_CONTAINER_SMALL_VECTOR
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} // namespace ue2
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#endif // UTIL_SMALL_VECTOR_H
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