mirror of https://github.com/axmolengine/axmol.git
95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
/// \file
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// Range v3 library
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//
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// Copyright Eric Niebler 2014-present
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//
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// Use, modification and distribution is subject to the
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// Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// Project home: https://github.com/ericniebler/range-v3
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//
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#ifndef RANGES_V3_VIEW_C_STR_HPP
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#define RANGES_V3_VIEW_C_STR_HPP
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#include <type_traits>
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#include <range/v3/range_fwd.hpp>
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#include <range/v3/iterator/unreachable_sentinel.hpp>
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#include <range/v3/utility/static_const.hpp>
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#include <range/v3/view/delimit.hpp>
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#include <range/v3/view/subrange.hpp>
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#include <range/v3/detail/prologue.hpp>
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namespace ranges
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{
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/// \cond
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namespace detail
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{
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template<typename T>
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struct is_char_type_ : std::false_type
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{};
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template<>
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struct is_char_type_<char> : std::true_type
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{};
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template<>
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struct is_char_type_<wchar_t> : std::true_type
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{};
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template<>
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struct is_char_type_<char16_t> : std::true_type
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{};
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template<>
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struct is_char_type_<char32_t> : std::true_type
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{};
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template<typename T>
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using is_char_type = is_char_type_<meta::_t<std::remove_cv<T>>>;
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} // namespace detail
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/// \endcond
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/// \addtogroup group-views
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/// @{
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namespace views
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{
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/// View a `\0`-terminated C string (e.g. from a const char*) as a
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/// range.
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struct c_str_fn
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{
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// Fixed-length
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template(typename Char, std::size_t N)(
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requires detail::is_char_type<Char>::value) //
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ranges::subrange<Char *> operator()(Char (&sz)[N]) const
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{
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return {&sz[0], &sz[N - 1]};
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}
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// Null-terminated
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template(typename Char)(
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requires detail::is_char_type<Char>::value) //
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ranges::delimit_view<
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ranges::subrange<Char *, ranges::unreachable_sentinel_t>,
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meta::_t<std::remove_cv<Char>>> //
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operator()(Char * sz) const volatile
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{
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using ch_t = meta::_t<std::remove_cv<Char>>;
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return ranges::views::delimit(sz, ch_t(0));
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}
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};
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/// \relates c_str_fn
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/// \ingroup group-views
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RANGES_INLINE_VARIABLE(c_str_fn, c_str)
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} // namespace views
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} // namespace ranges
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#include <range/v3/detail/epilogue.hpp>
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#endif
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