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add string_ref user-defined literals
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7 changed files with 398 additions and 199 deletions
189
sprout/utility/string_ref/string_view.hpp
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189
sprout/utility/string_ref/string_view.hpp
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/*=============================================================================
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Copyright (c) 2011-2016 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_UTILITY_STRING_REF_STRING_VIEW_HPP
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#define SPROUT_UTILITY_STRING_REF_STRING_VIEW_HPP
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#include <sprout/config.hpp>
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#include <sprout/string/char_traits.hpp>
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#include <sprout/utility/string_ref/string_ref.hpp>
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#include <sprout/utility/string_ref/type_traits.hpp>
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namespace sprout {
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//
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// string_view
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// wstring_view
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// u16string_view
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// u32string_view
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//
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typedef sprout::basic_string_ref<char> string_view;
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typedef sprout::basic_string_ref<wchar_t> wstring_view;
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#if SPROUT_USE_UNICODE_LITERALS
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typedef sprout::basic_string_ref<char16_t> u16string_view;
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typedef sprout::basic_string_ref<char32_t> u32string_view;
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#endif
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#if SPROUT_USE_TEMPLATE_ALIASES
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//
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// basic_string_view
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//
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template<typename T, typename Traits = sprout::char_traits<T> >
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using basic_string_view = sprout::basic_string_ref<T, Traits>;
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#endif // #if SPROUT_USE_TEMPLATE_ALIASES
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//
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// to_string_view
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//
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template<typename T, typename Traits>
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inline SPROUT_CONSTEXPR sprout::basic_string_ref<T, Traits>
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to_string_view(sprout::basic_string_ref<T, Traits> const& s) {
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return sprout::to_string_ref(s);
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}
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template<typename T, std::size_t N, typename Traits>
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inline SPROUT_CONSTEXPR sprout::basic_string_ref<T, Traits>
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to_string_view(sprout::basic_string<T, N, Traits> const& s) {
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return sprout::to_string_ref(s);
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}
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template<typename T, typename Traits>
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inline SPROUT_NON_CONSTEXPR sprout::basic_string_ref<T, Traits>
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to_string_view(std::basic_string<T, Traits> const& s) {
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return sprout::to_string_ref(s);
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}
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template<typename T>
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inline SPROUT_CONSTEXPR sprout::basic_string_ref<T>
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to_string_view(T const* str) {
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return sprout::to_string_ref(str);
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}
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template<typename T>
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inline SPROUT_CONSTEXPR sprout::basic_string_ref<T>
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to_string_view(T const* str, std::size_t len) {
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return sprout::to_string_ref(str, len);
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}
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//
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// is_basic_string_view
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//
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#if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T>
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using is_basic_string_view = sprout::is_basic_string_ref<T>;
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#else // #if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T>
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struct is_basic_string_view
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: public sprout::is_basic_string_ref<T>
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{};
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#endif // #if SPROUT_USE_TEMPLATE_ALIASES
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//
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// is_string_view_of
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//
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#if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T, typename Elem>
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using is_string_view_of = sprout::is_string_ref_of<T, Elem>;
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#else // #if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T, typename Elem>
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struct is_string_view_of
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: public sprout::is_string_ref_of<T, Elem>
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{};
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#endif // #if SPROUT_USE_TEMPLATE_ALIASES
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//
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// is_string_view
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//
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#if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T>
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using is_string_view = sprout::is_string_ref<T>;
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#else // #if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T, typename Elem>
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struct is_string_view
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: public sprout::is_string_ref<T>
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{};
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#endif // #if SPROUT_USE_TEMPLATE_ALIASES
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//
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// is_wstring_view
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//
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#if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T>
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using is_wstring_view = sprout::is_wstring_ref<T>;
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#else // #if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T, typename Elem>
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struct is_wstring_view
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: public sprout::is_wstring_ref<T>
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{};
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#endif // #if SPROUT_USE_TEMPLATE_ALIASES
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#if SPROUT_USE_UNICODE_LITERALS
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//
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// is_u16string_view
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//
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#if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T>
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using is_u16string_view = sprout::is_u16string_ref<T>;
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#else // #if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T, typename Elem>
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struct is_u16string_view
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: public sprout::is_u16string_ref<T>
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{};
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#endif // #if SPROUT_USE_TEMPLATE_ALIASES
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//
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// is_u32string_view
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//
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#if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T>
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using is_u32string_view = sprout::is_u32string_ref<T>;
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#else // #if SPROUT_USE_TEMPLATE_ALIASES
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template<typename T, typename Elem>
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struct is_u32string_view
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: public sprout::is_u32string_ref<T>
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{};
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#endif // #if SPROUT_USE_TEMPLATE_ALIASES
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#endif
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#if SPROUT_USE_VARIABLE_TEMPLATES
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template<typename T>
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SPROUT_STATIC_CONSTEXPR bool is_basic_string_view_v = sprout::is_basic_string_view<T>::value;
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template<typename T, typename Elem>
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SPROUT_STATIC_CONSTEXPR bool is_string_view_of_v = sprout::is_string_view_of<T, Elem>::value;
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template<typename T>
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SPROUT_STATIC_CONSTEXPR bool is_string_view_v = sprout::is_string_view<T>::value;
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template<typename T>
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SPROUT_STATIC_CONSTEXPR bool is_wstring_view_v = sprout::is_wstring_view<T>::value;
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#if SPROUT_USE_UNICODE_LITERALS
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template<typename T>
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SPROUT_STATIC_CONSTEXPR bool is_u16string_view_v = sprout::is_u16string_view<T>::value;
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template<typename T>
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SPROUT_STATIC_CONSTEXPR bool is_u32string_view_v = sprout::is_u32string_view<T>::value;
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#endif
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#endif // #if SPROUT_USE_VARIABLE_TEMPLATES
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namespace udl {
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//
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// _sv
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//
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inline SPROUT_CONSTEXPR sprout::basic_string_ref<char>
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operator"" _sv(char const* s, std::size_t size) {
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return sprout::basic_string_ref<char>(s, size);
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}
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inline SPROUT_CONSTEXPR sprout::basic_string_ref<wchar_t>
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operator"" _sv(wchar_t const* s, std::size_t size) {
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return sprout::basic_string_ref<wchar_t>(s, size);
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}
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#if SPROUT_USE_UNICODE_LITERALS
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inline SPROUT_CONSTEXPR sprout::basic_string_ref<char16_t>
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operator"" _sv(char16_t const* s, std::size_t size) {
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return sprout::basic_string_ref<char16_t>(s, size);
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}
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inline SPROUT_CONSTEXPR sprout::basic_string_ref<char32_t>
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operator"" _sv(char32_t const* s, std::size_t size) {
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return sprout::basic_string_ref<char32_t>(s, size);
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}
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#endif
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} // namespace udl
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using sprout::udl::operator"" _sv;
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} // namespace sprout
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#endif // #ifndef SPROUT_UTILITY_STRING_REF_STRING_VIEW_HPP
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