mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2025-07-06 14:24:09 +00:00
add sprout::string_ref
support conversion array-like container iterator to pointer
This commit is contained in:
bolero-MURAKAMI
parent
fa1d769bdf
commit
1ef8a6a63b
64 changed files with 1570 additions and 254 deletions
555
sprout/utility/string_ref/string_ref.hpp
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555
sprout/utility/string_ref/string_ref.hpp
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#ifndef SPROUT_UTILITY_STRING_REF_STRING_REF_HPP
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#define SPROUT_UTILITY_STRING_REF_STRING_REF_HPP
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#include <cstddef>
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#include <string>
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#include <stdexcept>
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/iterator/reverse_iterator.hpp>
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#include <sprout/iterator/operation.hpp>
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#include <sprout/utility/swap.hpp>
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#include <sprout/string/char_traits.hpp>
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#include <sprout/string/npos.hpp>
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#include <sprout/string/string.hpp>
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#include <sprout/string/detail/operations.hpp>
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#include HDR_ALGORITHM_SSCRISK_CEL_OR_SPROUT
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#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
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# include <sprout/iterator/index_iterator.hpp>
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#endif
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namespace sprout {
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//
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// basic_string_ref
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//
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template<typename T, typename Traits = sprout::char_traits<T> >
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class basic_string_ref {
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public:
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typedef T value_type;
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#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
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typedef sprout::index_iterator<basic_string_ref&, true> iterator;
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typedef sprout::index_iterator<basic_string_ref const&, true> const_iterator;
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#else
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typedef T const* iterator;
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typedef T const* const_iterator;
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#endif
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typedef T const& reference;
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typedef T const& const_reference;
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typedef std::size_t size_type;
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typedef std::ptrdiff_t difference_type;
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typedef T const* pointer;
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typedef T const* const_pointer;
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typedef sprout::reverse_iterator<iterator> reverse_iterator;
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typedef sprout::reverse_iterator<const_iterator> const_reverse_iterator;
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typedef Traits traits_type;
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#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
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private:
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template<typename Iterator>
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class is_string_ref_iterator
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: public std::integral_constant<
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bool,
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std::is_same<Iterator, sprout::index_iterator<basic_string_ref&, true> >::value
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|| std::is_same<Iterator, sprout::index_iterator<basic_string_ref const&, true> >::value
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>
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{};
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template<typename Iterator>
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class is_string_ref_iterator<Iterator const>
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: public is_string_ref_iterator<Iterator>
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{};
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template<typename Iterator>
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class is_string_ref_iterator<Iterator volatile>
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: public is_string_ref_iterator<Iterator>
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{};
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template<typename Iterator>
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class is_string_ref_iterator<Iterator const volatile>
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: public is_string_ref_iterator<Iterator>
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{};
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#endif
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public:
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SPROUT_STATIC_CONSTEXPR size_type npos = sprout::npos;
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private:
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const_pointer ptr_;
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size_type len_;
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public:
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// construct/copy/destroy:
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SPROUT_CONSTEXPR basic_string_ref()
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: ptr_(0), len_(0)
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{}
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SPROUT_CONSTEXPR basic_string_ref(basic_string_ref const& rhs) = default;
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basic_string_ref& operator=(basic_string_ref const& rhs) = default;
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SPROUT_CONSTEXPR basic_string_ref(const_pointer str)
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: ptr_(str), len_(traits_type::length(str))
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{}
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template<std::size_t N>
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SPROUT_CONSTEXPR basic_string_ref(sprout::basic_string<T, N, Traits> const& str)
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: ptr_(str.data()), len_(str.length())
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{}
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template<typename Allocator>
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SPROUT_CONSTEXPR basic_string_ref(std::basic_string<T, Traits, Allocator> const& str)
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: ptr_(str.data()), len_(str.length())
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{}
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SPROUT_CONSTEXPR basic_string_ref(const_pointer str, size_type len)
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: ptr_(str), len_(len)
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{}
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// iterators:
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#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
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iterator
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begin() SPROUT_NOEXCEPT {
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return iterator(*this, 0);
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}
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SPROUT_CONSTEXPR const_iterator
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begin() const SPROUT_NOEXCEPT {
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return const_iterator(*this, 0);
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}
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iterator
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end() SPROUT_NOEXCEPT {
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return iterator(*this, size());
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}
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SPROUT_CONSTEXPR const_iterator
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end() const SPROUT_NOEXCEPT {
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return const_iterator(*this, size());
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}
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#else
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SPROUT_CONSTEXPR const_iterator
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begin() const SPROUT_NOEXCEPT {
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return data();
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}
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SPROUT_CONSTEXPR const_iterator
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end() const SPROUT_NOEXCEPT {
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return data() + size();
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}
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#endif
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SPROUT_CONSTEXPR const_reverse_iterator
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rbegin() const SPROUT_NOEXCEPT {
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return const_reverse_iterator(end());
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}
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SPROUT_CONSTEXPR const_reverse_iterator
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rend() const SPROUT_NOEXCEPT {
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return const_reverse_iterator(begin());
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}
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#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
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SPROUT_CONSTEXPR const_iterator
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cbegin() const SPROUT_NOEXCEPT {
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return const_iterator(*this, 0);
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}
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SPROUT_CONSTEXPR const_iterator
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cend() const SPROUT_NOEXCEPT {
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return const_iterator(*this, size());
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}
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#else
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SPROUT_CONSTEXPR const_iterator
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cbegin() const SPROUT_NOEXCEPT {
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return data();
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}
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SPROUT_CONSTEXPR const_iterator
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cend() const SPROUT_NOEXCEPT {
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return data() + size();
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}
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#endif
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SPROUT_CONSTEXPR const_reverse_iterator
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crbegin() const SPROUT_NOEXCEPT {
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return const_reverse_iterator(end());
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}
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SPROUT_CONSTEXPR const_reverse_iterator
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crend() const SPROUT_NOEXCEPT {
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return const_reverse_iterator(begin());
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}
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// capacity:
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SPROUT_CONSTEXPR size_type
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size() const SPROUT_NOEXCEPT {
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return len_;
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}
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SPROUT_CONSTEXPR size_type
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length() const SPROUT_NOEXCEPT {
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return size();
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}
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SPROUT_CONSTEXPR size_type
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max_size() const SPROUT_NOEXCEPT {
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return size();
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}
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void
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clear() {
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len_ = 0;
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}
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SPROUT_CONSTEXPR bool
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empty() const SPROUT_NOEXCEPT {
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return size() == 0;
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}
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// element access:
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SPROUT_CONSTEXPR const_reference
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operator[](size_type i) const {
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return ptr_[i];
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}
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SPROUT_CONSTEXPR const_reference
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at(size_type i) const {
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return i < size() ? ptr_[i]
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: (throw std::out_of_range("basic_string_ref<>: index out of range"), ptr_[i])
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;
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}
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SPROUT_CONSTEXPR const_reference
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front() const {
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return ptr_[0];
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}
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SPROUT_CONSTEXPR const_reference
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back() const {
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return ptr_[size() - 1];
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}
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// modifiers:
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void
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swap(basic_string_ref& other)
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SPROUT_NOEXCEPT
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{
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sprout::swap(ptr_, other.ptr_);
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sprout::swap(len_, other.len_);
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}
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void
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remove_prefix(size_type n) {
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if (n > size()) {
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n = size();
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}
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ptr_ += n;
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len_ -= n;
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}
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SPROUT_CONSTEXPR basic_string_ref
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remove_prefix(size_type n) {
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return n > size() ? basic_string_ref(data() + size(), 0)
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: basic_string_ref(data() + n, size() - n)
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;
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}
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void
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remove_suffix(size_type n) {
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if (n > size()) {
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n = size();
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}
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len_ -= n;
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}
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SPROUT_CONSTEXPR basic_string_ref
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remove_suffix(size_type n) {
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return n > size() ? basic_string_ref(data(), 0)
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: basic_string_ref(data(), size() - n)
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;
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}
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// string operations:
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SPROUT_CONSTEXPR const_pointer
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c_str() const SPROUT_NOEXCEPT {
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return data();
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}
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SPROUT_CONSTEXPR const_pointer
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data() const SPROUT_NOEXCEPT {
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return ptr_;
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}
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SPROUT_CONSTEXPR size_type
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find(basic_string_ref const& str, size_type pos = 0) const SPROUT_NOEXCEPT {
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return sprout::string_detail::find_impl<basic_string_ref>(begin(), size(), str.begin(), pos, str.size());
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}
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SPROUT_CONSTEXPR size_type
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find(value_type const* s, size_type pos, size_type n) const {
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return sprout::string_detail::find_impl<basic_string_ref>(begin(), size(), s, pos, n);
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}
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SPROUT_CONSTEXPR size_type
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find(value_type const* s, size_type pos = 0) const {
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return find(s, pos, traits_type::length(s));
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}
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SPROUT_CONSTEXPR size_type
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find(value_type c, size_type pos = 0) const {
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return sprout::string_detail::find_c_impl<basic_string_ref>(begin(), size(), c, pos);
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}
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SPROUT_CONSTEXPR size_type
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rfind(basic_string_ref const& str, size_type pos = npos) const SPROUT_NOEXCEPT {
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return sprout::string_detail::rfind_impl<basic_string_ref>(begin(), size(), str.begin(), pos, str.size());
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}
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SPROUT_CONSTEXPR size_type
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rfind(value_type const* s, size_type pos, size_type n) const {
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return sprout::string_detail::rfind_impl<basic_string_ref>(begin(), size(), s, pos, n);
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}
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SPROUT_CONSTEXPR size_type
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rfind(value_type const* s, size_type pos = npos) const {
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return rfind(s, pos, traits_type::length(s));
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}
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SPROUT_CONSTEXPR size_type
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rfind(value_type c, size_type pos = npos) const {
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return sprout::string_detail::rfind_c_impl<basic_string_ref>(begin(), size(), c, pos);
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}
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SPROUT_CONSTEXPR size_type
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find_first_of(basic_string_ref const& str, size_type pos = 0) const SPROUT_NOEXCEPT {
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return sprout::string_detail::find_first_of_impl<basic_string_ref>(begin(), size(), str.begin(), pos, str.size());
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}
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SPROUT_CONSTEXPR size_type
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find_first_of(value_type const* s, size_type pos, size_type n) const {
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return sprout::string_detail::find_first_of_impl<basic_string_ref>(begin(), size(), s, pos, n);
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}
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SPROUT_CONSTEXPR size_type
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find_first_of(value_type const* s, size_type pos = 0) const {
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return find_first_of(s, pos, traits_type::length(s));
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}
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SPROUT_CONSTEXPR size_type
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find_first_of(value_type c, size_type pos = 0) const {
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return find(c, pos);
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}
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SPROUT_CONSTEXPR size_type
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find_last_of(basic_string_ref const& str, size_type pos = npos) const SPROUT_NOEXCEPT {
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return sprout::string_detail::find_last_of_impl<basic_string_ref>(begin(), size(), str.begin(), pos, str.size());
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}
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SPROUT_CONSTEXPR size_type
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find_last_of(value_type const* s, size_type pos, size_type n) const {
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return sprout::string_detail::find_last_of_impl<basic_string_ref>(begin(), size(), s, pos, n);
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}
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SPROUT_CONSTEXPR size_type
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find_last_of(value_type const* s, size_type pos = npos) const {
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return find_last_of(s, pos, traits_type::length(s));
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}
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SPROUT_CONSTEXPR size_type
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find_last_of(value_type c, size_type pos = npos) const {
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return rfind(c, pos);
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}
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SPROUT_CONSTEXPR size_type
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find_first_not_of(basic_string_ref const& str, size_type pos = 0) const SPROUT_NOEXCEPT {
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return sprout::string_detail::find_first_not_of_impl<basic_string_ref>(begin(), size(), str.begin(), pos, str.size());
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}
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SPROUT_CONSTEXPR size_type
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find_first_not_of(value_type const* s, size_type pos, size_type n) const {
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return sprout::string_detail::find_first_not_of_impl<basic_string_ref>(begin(), size(), s, pos, n);
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}
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SPROUT_CONSTEXPR size_type
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find_first_not_of(value_type const* s, size_type pos = 0) const {
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return find_first_not_of(s, pos, traits_type::length(s));
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}
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SPROUT_CONSTEXPR size_type
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find_first_not_of(value_type c, size_type pos = 0) const {
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return sprout::string_detail::find_first_not_of_c_impl<basic_string_ref>(begin(), size(), c, pos);
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}
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SPROUT_CONSTEXPR size_type
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find_last_not_of(basic_string_ref const& str, size_type pos = npos) const SPROUT_NOEXCEPT {
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return sprout::string_detail::find_last_not_of_impl<basic_string_ref>(begin(), size(), str.begin(), pos, str.size());
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}
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SPROUT_CONSTEXPR size_type
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find_last_not_of(value_type const* s, size_type pos, size_type n) const {
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return sprout::string_detail::find_last_not_of_impl<basic_string_ref>(begin(), size(), s, pos, n);
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}
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SPROUT_CONSTEXPR size_type
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find_last_not_of(value_type const* s, size_type pos = npos) const {
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return find_last_not_of(s, pos, traits_type::length(s));
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}
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SPROUT_CONSTEXPR size_type
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find_last_not_of(value_type c, size_type pos = npos) const {
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return sprout::string_detail::find_last_not_of_c_impl<basic_string_ref>(begin(), size(), c, pos);
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}
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SPROUT_CONSTEXPR basic_string_ref
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substr(size_type pos = 0, size_type n = npos) const {
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return !(size() < pos) ? n == npos
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? substr(pos, size() - pos)
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: basic_string_ref(c_str() + pos, n)
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: throw std::out_of_range("basic_string_ref<>: index out of range")
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;
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}
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SPROUT_CONSTEXPR int
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compare(basic_string_ref const& str) const {
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return compare(0, size(), str.begin(), str.size());
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}
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SPROUT_CONSTEXPR int
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compare(value_type const* s) const {
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return compare(0, size(), s, traits_type::length(s));
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}
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SPROUT_CONSTEXPR int
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compare(size_type pos1, size_type n1, basic_string_ref const& str) const {
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return compare(pos1, n1, str, 0, npos);
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}
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SPROUT_CONSTEXPR int
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compare(size_type pos1, size_type n1, value_type const* s) const {
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return compare(pos1, n1, s, traits_type::length(s));
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}
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SPROUT_CONSTEXPR int
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compare(size_type pos1, size_type n1, basic_string_ref const& str, size_type pos2, size_type n2) const {
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return !(str.size() < pos2)
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? compare(pos1, n1, str.begin() + pos2, NS_SSCRISK_CEL_OR_SPROUT::min(n2, str.size() - pos2))
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: throw std::out_of_range("basic_string_ref<>: index out of range")
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;
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}
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SPROUT_CONSTEXPR int
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compare(size_type pos1, size_type n1, value_type const* s, size_type n2) const {
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return !(size() < pos1)
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? sprout::string_detail::compare_impl<basic_string_ref>(begin(), pos1, NS_SSCRISK_CEL_OR_SPROUT::min(n1, size() - pos1), s, n2)
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: throw std::out_of_range("basic_string_ref<>: index out of range")
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;
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}
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SPROUT_CONSTEXPR bool
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starts_with(value_type c) const {
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return !empty() && traits_type::eq(c, front());
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}
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SPROUT_CONSTEXPR bool
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starts_with(basic_string_ref const& str) const {
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return size() >= str.size() && traits_type::compare(data(), str.data(), str.size()) == 0;
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}
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SPROUT_CONSTEXPR bool
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ends_with(value_type c) const {
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return !empty() && traits_type::eq(c, back());
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}
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SPROUT_CONSTEXPR bool
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ends_with(basic_string_ref const& str) const {
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return size() >= str.size() && traits_type::compare(data() + size() - str.size(), str.data(), str.size()) == 0;
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}
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// others:
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#if SPROUT_USE_EXPLICIT_CONVERSION_OPERATORS
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template<typename Allocator>
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explicit operator std::basic_string<T, Traits, Allocator>() const {
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return std::basic_string<T, Traits, Allocator>(data(), size());
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}
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#endif
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pointer
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c_array() SPROUT_NOEXCEPT {
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return data();
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}
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void
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rangecheck(size_type i) const {
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if (i >= size()) {
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throw std::out_of_range("basic_string_ref<>: index out of range");
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}
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}
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void
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maxcheck(size_type n) const {
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rangecheck(n);
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}
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#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
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template<typename ConstIterator>
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SPROUT_CONSTEXPR typename std::enable_if<
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is_string_ref_iterator<ConstIterator>::value,
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size_type
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>::type
|
||||
find(ConstIterator s, size_type pos, size_type n) const {
|
||||
return sprout::string_detail::find_impl<basic_string_ref>(begin(), size(), s, pos, n);
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
size_type
|
||||
>::type
|
||||
find(ConstIterator s, size_type pos = 0) const {
|
||||
return find(s, pos, traits_type::length(s));
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
size_type
|
||||
>::type
|
||||
rfind(ConstIterator s, size_type pos, size_type n) const {
|
||||
return sprout::string_detail::rfind_impl<basic_string_ref>(begin(), size(), s, pos, n);
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
size_type
|
||||
>::type
|
||||
rfind(ConstIterator s, size_type pos = npos) const {
|
||||
return rfind(s, pos, traits_type::length(s));
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
size_type
|
||||
>::type
|
||||
find_first_of(ConstIterator s, size_type pos, size_type n) const {
|
||||
return sprout::string_detail::find_first_of_impl<basic_string_ref>(begin(), size(), s, pos, n);
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
size_type
|
||||
>::type
|
||||
find_first_of(ConstIterator s, size_type pos = 0) const {
|
||||
return find_first_of(s, pos, traits_type::length(s));
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
size_type
|
||||
>::type
|
||||
find_last_of(ConstIterator s, size_type pos, size_type n) const {
|
||||
return sprout::string_detail::find_last_of_impl<basic_string_ref>(begin(), size(), s, pos, n);
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
size_type
|
||||
>::type
|
||||
find_last_of(ConstIterator s, size_type pos = 0) const {
|
||||
return find_last_of(s, pos, traits_type::length(s));
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
size_type
|
||||
>::type
|
||||
find_first_not_of(ConstIterator s, size_type pos, size_type n) const {
|
||||
return sprout::string_detail::find_first_not_of_impl<basic_string_ref>(begin(), size(), s, pos, n);
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
size_type
|
||||
>::type
|
||||
find_first_not_of(ConstIterator s, size_type pos = 0) const {
|
||||
return sprout::string_detail::find_first_not_of_impl<basic_string_ref>(s, pos, traits_type::length(s));
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
size_type
|
||||
>::type
|
||||
find_last_not_of(ConstIterator s, size_type pos, size_type n) const {
|
||||
return sprout::string_detail::find_last_not_of_impl<basic_string_ref>(begin(), size(), s, pos, n);
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
size_type
|
||||
>::type
|
||||
find_last_not_of(ConstIterator s, size_type pos = npos) const {
|
||||
return sprout::string_detail::find_last_not_of_impl<basic_string_ref>(s, pos, traits_type::length(s));
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
int
|
||||
>::type
|
||||
compare(ConstIterator s) const {
|
||||
return compare(0, size(), s, traits_type::length(s));
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
int
|
||||
>::type
|
||||
compare(size_type pos1, size_type n1, ConstIterator s) const {
|
||||
return compare(pos1, n1, s, traits_type::length(s));
|
||||
}
|
||||
template<typename ConstIterator>
|
||||
SPROUT_CONSTEXPR typename std::enable_if<
|
||||
is_string_ref_iterator<ConstIterator>::value,
|
||||
int
|
||||
>::type
|
||||
compare(size_type pos1, size_type n1, ConstIterator s, size_type n2) const {
|
||||
return !(size() < pos1)
|
||||
? sprout::string_detail::compare_impl<basic_string_ref>(begin(), pos1, NS_SSCRISK_CEL_OR_SPROUT::min(n1, size() - pos1), s, n2)
|
||||
: throw std::out_of_range("basic_string_ref<>: index out of range")
|
||||
;
|
||||
}
|
||||
#endif
|
||||
};
|
||||
template<typename T, typename Traits>
|
||||
SPROUT_CONSTEXPR_OR_CONST typename sprout::basic_string_ref<T, Traits>::size_type sprout::basic_string_ref<T, Traits>::npos;
|
||||
|
||||
//
|
||||
// swap
|
||||
//
|
||||
template<typename T, typename Traits>
|
||||
inline void
|
||||
swap(sprout::basic_string_ref<T, Traits>& lhs, sprout::basic_string_ref<T, Traits>& rhs)
|
||||
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(lhs.swap(rhs)))
|
||||
{
|
||||
lhs.swap(rhs);
|
||||
}
|
||||
} // namespace sprout
|
||||
|
||||
#endif // #ifndef SPROUT_UTILITY_STRING_REF_STRING_REF_HPP
|
||||
Loading…
Add table
Add a link
Reference in a new issue