mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
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110 lines
4.3 KiB
C++
110 lines
4.3 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2019 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_SUB_ARRAY_SUB_OFFSET_HPP
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#define SPROUT_SUB_ARRAY_SUB_OFFSET_HPP
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/container/traits.hpp>
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#include <sprout/container/functions.hpp>
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#include <sprout/sub_array/sub_array.hpp>
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#include <sprout/sub_array/type_traits.hpp>
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namespace sprout {
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//
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// sub_offset
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//
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template<typename Container>
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inline SPROUT_CONSTEXPR typename std::enable_if<!sprout::is_sub_array<Container>::value, sprout::sub_array<Container&> >::type
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sub_offset(
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Container& arr,
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typename sprout::container_traits<sprout::sub_array<Container&> >::difference_type from_begin = 0,
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typename sprout::container_traits<sprout::sub_array<Container&> >::difference_type from_end = 0
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)
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{
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return sprout::sub_array<Container&>(arr, from_begin, sprout::size(arr) + from_end);
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}
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template<typename Container>
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inline SPROUT_CONSTEXPR typename std::enable_if<!sprout::is_sub_array<Container>::value, sprout::sub_array<Container const&> >::type
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sub_offset(
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Container const& arr,
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typename sprout::container_traits<sprout::sub_array<Container const&> >::difference_type from_begin = 0,
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typename sprout::container_traits<sprout::sub_array<Container const&> >::difference_type from_end = 0
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)
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{
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return sprout::sub_array<Container const&>(arr, from_begin, sprout::size(arr) + from_end);
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}
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template<typename Container>
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inline SPROUT_CONSTEXPR typename std::enable_if<sprout::is_sub_array<Container>::value, Container>::type
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sub_offset(
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Container const& arr,
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typename sprout::container_traits<Container>::difference_type from_begin = 0,
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typename sprout::container_traits<Container>::difference_type from_end = 0
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)
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{
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return Container(arr, from_begin, sprout::size(arr) + from_end);
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}
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//
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// csub_offset
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//
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template<typename Container>
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inline SPROUT_CONSTEXPR typename std::enable_if<!sprout::is_sub_array<Container>::value, sprout::sub_array<Container const&> >::type
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csub_offset(
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Container const& arr,
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typename sprout::container_traits<sprout::sub_array<Container const&> >::difference_type from_begin = 0,
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typename sprout::container_traits<sprout::sub_array<Container const&> >::difference_type from_end = 0
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)
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{
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return sprout::sub_offset(arr, from_begin, from_end);
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}
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template<typename Container>
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inline SPROUT_CONSTEXPR typename std::enable_if<sprout::is_sub_array<Container>::value, sprout::sub_array<typename Container::internal_type const&> >::type
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csub_offset(
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Container const& arr,
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typename sprout::container_traits<Container>::difference_type from_begin = 0,
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typename sprout::container_traits<Container>::difference_type from_end = 0
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)
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{
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return sprout::sub_array<typename Container::internal_type const&>(
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arr.get_array(),
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arr.to_first() + from_begin,
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arr.to_last() + from_end
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);
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}
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//
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// sub_offset_copy
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//
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template<typename Container>
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inline SPROUT_CONSTEXPR typename std::enable_if<!sprout::is_sub_array<Container>::value, sprout::sub_array<Container> >::type
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sub_offset_copy(
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Container const& arr,
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typename sprout::container_traits<Container>::difference_type from_begin = 0,
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typename sprout::container_traits<Container>::difference_type from_end = 0
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)
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{
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return sprout::sub_array<Container>(arr, from_begin, sprout::size(arr) + from_end);
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}
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template<typename Container>
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inline SPROUT_CONSTEXPR typename std::enable_if<sprout::is_sub_array<Container>::value, sprout::sub_array<typename Container::internal_type> >::type
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sub_offset_copy(
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Container const& arr,
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typename sprout::container_traits<Container>::difference_type from_begin = 0,
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typename sprout::container_traits<Container>::difference_type from_end = 0
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)
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{
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return sprout::sub_array<typename Container::internal_type>(
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arr.get_array(),
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arr.to_first() + from_begin,
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arr.to_last() + from_end
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);
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_SUB_ARRAY_SUB_OFFSET_HPP
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