mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
529 lines
18 KiB
C++
529 lines
18 KiB
C++
#ifndef SPROUT_STRING_STRING_HPP
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#define SPROUT_STRING_STRING_HPP
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#include <cstddef>
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#include <algorithm>
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#include <utility>
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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/index_tuple.hpp>
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#include <sprout/iterator/reverse_iterator.hpp>
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#include <sprout/utility/forward.hpp>
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#include <sprout/string/char_traits.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
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//
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template<typename T, std::size_t N, typename Traits = sprout::char_traits<T> >
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class basic_string {
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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&> iterator;
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typedef sprout::index_iterator<basic_string const&> const_iterator;
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#else
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typedef T* iterator;
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typedef T const* const_iterator;
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#endif
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typedef T& 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* 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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public:
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SPROUT_STATIC_CONSTEXPR size_type npos = -1;
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SPROUT_STATIC_CONSTEXPR size_type static_size = N;
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private:
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static SPROUT_CONSTEXPR int compare_impl_2(int compared, size_type n1, size_type n2) {
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return compared != 0 ? compared
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: n1 < n2 ? -1
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: n2 < n1 ? 1
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: 0
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;
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}
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static SPROUT_CONSTEXPR int compare_impl_1(value_type const* dest, size_type pos1, size_type n1, value_type const* s, size_type n2) {
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return compare_impl_2(
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traits_type::compare(dest + pos1, s, NS_SSCRISK_CEL_OR_SPROUT::min(n1, n2)),
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n1,
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n2
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);
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}
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template<sprout::index_t... Indexes>
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static SPROUT_CONSTEXPR basic_string<T, N, Traits> from_c_str_impl(
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value_type const* s,
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size_type n,
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sprout::index_tuple<Indexes...>
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)
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{
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return sprout::basic_string<T, N, Traits>{{(Indexes < n ? s[Indexes] : T())...}, 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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static SPROUT_CONSTEXPR typename std::enable_if<
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sprout::is_index_iterator<ConstIterator>::value,
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int
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>::type compare_impl_1(value_type const* dest, size_type pos1, size_type n1, ConstIterator s, size_type n2) {
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return compare_impl_2(
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traits_type::compare(dest + pos1, s, NS_SSCRISK_CEL_OR_SPROUT::min(n1, n2)),
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n1,
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n2
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);
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}
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static SPROUT_CONSTEXPR int compare_impl_1(const_iterator dest, size_type pos1, size_type n1, value_type const* s, size_type n2) {
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return compare_impl_2(
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traits_type::compare(dest + pos1, s, NS_SSCRISK_CEL_OR_SPROUT::min(n1, n2)),
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n1,
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n2
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);
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}
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template<typename ConstIterator>
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static SPROUT_CONSTEXPR typename std::enable_if<
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sprout::is_index_iterator<ConstIterator>::value,
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int
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>::type compare_impl_1(const_iterator dest, size_type pos1, size_type n1, ConstIterator s, size_type n2) {
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return compare_impl_2(
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traits_type::compare(dest + pos1, s, NS_SSCRISK_CEL_OR_SPROUT::min(n1, n2)),
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n1,
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n2
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);
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}
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#endif
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template<std::size_t M, sprout::index_t... Indexes>
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static SPROUT_CONSTEXPR basic_string<T, sizeof...(Indexes), Traits> implicit_conversion_impl(
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T const(& elems)[M],
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size_type len,
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sprout::index_tuple<Indexes...>
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)
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{
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return sprout::basic_string<T, sizeof...(Indexes), Traits>{{(Indexes < M - 1 ? elems[Indexes] : T())...}, len};
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}
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public:
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static SPROUT_CONSTEXPR basic_string<T, N, Traits> from_c_str(value_type const* s, size_type n) {
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return !(N < n)
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? from_c_str_impl(s, n, typename sprout::index_range<0, N>::type())
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: throw std::out_of_range("basic_string<>: index out of range")
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;
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}
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static SPROUT_CONSTEXPR basic_string<T, N, Traits> from_c_str(value_type const* s) {
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return from_c_str(s, traits_type::length(s));
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}
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public:
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value_type elems[static_size + 1];
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size_type len;
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public:
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// construct/copy/destroy:
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template<std::size_t N2>
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basic_string<T, N, Traits>& operator=(basic_string<T, N2, Traits> const& rhs) {
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return assign(rhs);
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}
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basic_string<T, N, Traits>& operator=(value_type const* rhs) {
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return assign(rhs);
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}
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basic_string<T, N, Traits>& operator=(value_type rhs) {
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return assign(1, rhs);
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}
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// iterators:
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#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
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iterator begin() SPROUT_NOEXCEPT {
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return iterator(*this, 0);
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}
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SPROUT_CONSTEXPR const_iterator begin() const SPROUT_NOEXCEPT {
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return const_iterator(*this, 0);
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}
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iterator end() SPROUT_NOEXCEPT {
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return iterator(*this, size());
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}
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SPROUT_CONSTEXPR const_iterator 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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iterator begin() SPROUT_NOEXCEPT {
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return &elems[0];
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}
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SPROUT_CONSTEXPR const_iterator begin() const SPROUT_NOEXCEPT {
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return &elems[0];
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}
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iterator end() SPROUT_NOEXCEPT {
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return &elems[0] + size();
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}
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SPROUT_CONSTEXPR const_iterator end() const SPROUT_NOEXCEPT {
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return &elems[0] + size();
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}
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#endif
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reverse_iterator rbegin() SPROUT_NOEXCEPT {
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return const_reverse_iterator(end());
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}
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SPROUT_CONSTEXPR const_reverse_iterator rbegin() const SPROUT_NOEXCEPT {
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return const_reverse_iterator(end());
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}
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reverse_iterator rend() SPROUT_NOEXCEPT {
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return const_reverse_iterator(begin());
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}
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SPROUT_CONSTEXPR const_reverse_iterator 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 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 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 cbegin() const SPROUT_NOEXCEPT {
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return &elems[0];
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}
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SPROUT_CONSTEXPR const_iterator cend() const SPROUT_NOEXCEPT {
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return &elems[0] + size();
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}
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#endif
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SPROUT_CONSTEXPR const_reverse_iterator 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 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 size() const SPROUT_NOEXCEPT {
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return len;
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}
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SPROUT_CONSTEXPR size_type length() const SPROUT_NOEXCEPT {
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return size();
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}
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SPROUT_CONSTEXPR size_type max_size() const SPROUT_NOEXCEPT {
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return static_size;
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}
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void resize(size_type n, value_type c) {
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maxcheck(n);
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if (n > size()) {
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traits_type::assign(end(), n - size(), c);
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}
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traits_type::assign(begin() + n, max_size() - n, value_type());
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len = n;
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}
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void resize(size_type n) {
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resize(n, value_type());
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}
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void clear() {
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traits_type::assign(begin(), max_size(), value_type());
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len = 0;
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}
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SPROUT_CONSTEXPR bool 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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reference operator[](size_type i) {
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return elems[i];
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}
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SPROUT_CONSTEXPR const_reference operator[](size_type i) const {
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return elems[i];
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}
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reference at(size_type i) {
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return i < size()
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? elems[i]
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: (throw std::out_of_range("basic_string<>: index out of range"), elems[i])
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;
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}
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SPROUT_CONSTEXPR const_reference at(size_type i) const {
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return i < size()
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? elems[i]
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: (throw std::out_of_range("basic_string<>: index out of range"), elems[i])
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;
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}
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reference front() {
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return elems[0];
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}
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SPROUT_CONSTEXPR const_reference front() const {
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return elems[0];
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}
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reference back() {
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return elems[size() - 1];
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}
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SPROUT_CONSTEXPR const_reference back() const {
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return elems[size() - 1];
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}
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// modifiers:
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template<std::size_t N2>
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basic_string<T, N, Traits>& assign(basic_string<T, N2, Traits> const& str) {
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return assign(str.begin(), str.size());
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}
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template<std::size_t N2>
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basic_string<T, N, Traits>& assign(basic_string<T, N2, Traits> const& str, size_type pos, size_type n) {
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if (str.size() < pos + n) {
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throw std::out_of_range("basic_string<>: index out of range");
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}
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return assign(str.begin() + pos, n);
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}
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basic_string<T, N, Traits>& assign(value_type const* s, size_type n) {
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maxcheck(n);
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for (size_type i = 0; i < n; ++i) {
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traits_type::assign(elems[i], s[i]);
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}
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for (size_type i = n; i < max_size(); ++i) {
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traits_type::assign(elems[i], value_type());
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}
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len = n;
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return *this;
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}
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basic_string<T, N, Traits>& assign(value_type const* s) {
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return assign(s, traits_type::length(s));
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}
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basic_string<T, N, Traits>& assign(size_type n, value_type c) {
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maxcheck(n);
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traits_type::assign(begin(), n, c);
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traits_type::assign(begin() + n, max_size() - n, value_type());
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len = n;
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return *this;
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}
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template<typename Iterator>
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basic_string<T, N, Traits>& assign(Iterator first, Iterator last) {
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size_type n = 0;
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for (; n < max_size() || first != last; ++n, ++first) {
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traits_type::assign(elems[n], *first);
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}
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for (size_type i = n; i < max_size(); ++i) {
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traits_type::assign(elems[i], value_type());
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}
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len = n;
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return *this;
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}
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void swap(basic_string<T, N, Traits>& other) SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(std::swap(std::declval<T&>(), std::declval<T&>()))) {
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std::swap_ranges(other.begin(), other.begin() + other.max_size(), begin());
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{
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using std::swap;
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swap(len, other.len);
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}
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}
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// string operations:
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SPROUT_CONSTEXPR const_pointer c_str() const SPROUT_NOEXCEPT {
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return &elems[0];
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}
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pointer data() SPROUT_NOEXCEPT {
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return &elems[0];
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}
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SPROUT_CONSTEXPR const_pointer data() const SPROUT_NOEXCEPT {
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return &elems[0];
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}
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SPROUT_CONSTEXPR basic_string<T, N, Traits> substr(size_type pos = 0, size_type n = npos) const {
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return !(size() < pos)
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? n == npos
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? substr(pos, size() - pos)
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: from_c_str(c_str() + pos, n)
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: throw std::out_of_range("basic_string<>: index out of range")
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;
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}
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template<std::size_t N2>
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SPROUT_CONSTEXPR int compare(basic_string<T, N2, Traits> 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 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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template<std::size_t N2>
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SPROUT_CONSTEXPR int compare(size_type pos1, size_type n1, basic_string<T, N2, Traits> 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 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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template<std::size_t N2>
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SPROUT_CONSTEXPR int compare(size_type pos1, size_type n1, basic_string<T, N2, Traits> 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<>: index out of range")
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;
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}
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SPROUT_CONSTEXPR int 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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? compare_impl_1(begin(), pos1, NS_SSCRISK_CEL_OR_SPROUT::min(n1, size() - pos1), s, n2)
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: throw std::out_of_range("basic_string<>: index out of range")
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;
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}
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// others:
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template<std::size_t N2, typename Enable = typename std::enable_if<(N2 > N)>::type>
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SPROUT_CONSTEXPR operator basic_string<T, N2, Traits>() const {
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return implicit_conversion_impl(
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elems,
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len,
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typename sprout::index_range<0, N2>::type()
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);
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}
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pointer c_array() SPROUT_NOEXCEPT {
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return &elems[0];
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}
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void rangecheck(size_type i) const {
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if (i >= size()) {
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throw std::out_of_range("basic_string<>: index out of range");
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}
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}
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void maxcheck(size_type n) const {
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if (n > max_size()) {
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throw std::out_of_range("basic_string<>: index out of range");
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}
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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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typename std::enable_if<
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sprout::is_index_iterator<ConstIterator>::value,
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basic_string<T, N, Traits>&
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>::type assign(ConstIterator s, size_type n) {
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maxcheck(n);
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for (size_type i = 0; i < n; ++i) {
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traits_type::assign(elems[i], s[i]);
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}
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for (size_type i = n; i < max_size(); ++i) {
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traits_type::assign(elems[i], value_type());
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}
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len = n;
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return *this;
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}
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template<typename ConstIterator>
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typename std::enable_if<
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sprout::is_index_iterator<ConstIterator>::value,
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basic_string<T, N, Traits>&
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>::type assign(ConstIterator s) {
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return assign(s, traits_type::length(s));
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}
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template<typename ConstIterator>
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typename std::enable_if<
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sprout::is_index_iterator<ConstIterator>::value,
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basic_string<T, N, Traits>&
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>::type operator=(ConstIterator rhs) {
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return assign(rhs);
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}
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template<typename ConstIterator>
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SPROUT_CONSTEXPR typename std::enable_if<
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sprout::is_index_iterator<ConstIterator>::value,
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int
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>::type compare(ConstIterator s) const {
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return compare(0, size(), s, traits_type::length(s));
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}
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template<typename ConstIterator>
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SPROUT_CONSTEXPR typename std::enable_if<
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sprout::is_index_iterator<ConstIterator>::value,
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int
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>::type compare(size_type pos1, size_type n1, ConstIterator s) const {
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return compare(pos1, n1, s, traits_type::length(s));
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}
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template<typename ConstIterator>
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SPROUT_CONSTEXPR typename std::enable_if<
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sprout::is_index_iterator<ConstIterator>::value,
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int
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>::type compare(size_type pos1, size_type n1, ConstIterator s, size_type n2) const {
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return !(size() < pos1)
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? compare_impl_1(begin(), pos1, NS_SSCRISK_CEL_OR_SPROUT::min(n1, size() - pos1), s, n2)
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: throw std::out_of_range("basic_string<>: index out of range")
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;
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}
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#endif
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};
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template<typename T, std::size_t N, typename Traits>
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SPROUT_CONSTEXPR typename sprout::basic_string<T, N, Traits>::size_type sprout::basic_string<T, N, Traits>::npos;
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template<typename T, std::size_t N, typename Traits>
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SPROUT_CONSTEXPR typename sprout::basic_string<T, N, Traits>::size_type sprout::basic_string<T, N, Traits>::static_size;
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//
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// swap
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//
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template<typename T, std::size_t N, typename Traits>
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inline void swap(
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sprout::basic_string<T, N, Traits>& lhs,
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sprout::basic_string<T, N, Traits>& rhs
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) SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(lhs.swap(rhs)))
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{
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lhs.swap(rhs);
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}
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namespace detail {
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template<typename Container>
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struct make_construct_impl;
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template<typename T, std::size_t N, typename Traits>
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struct make_construct_impl<sprout::basic_string<T, N, Traits> > {
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private:
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typedef sprout::basic_string<T, N, Traits> copied_type;
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private:
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template<std::size_t S>
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static SPROUT_CONSTEXPR copied_type make_impl(typename copied_type::size_type size) {
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return copied_type{{}, size};
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}
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template<std::size_t S, typename Head, typename... Tail>
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static SPROUT_CONSTEXPR typename std::enable_if<
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S == sizeof...(Tail),
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copied_type
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>::type make_impl(typename copied_type::size_type size, Head&& head, Tail&&... tail) {
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return copied_type{{sprout::forward<Tail>(tail)..., sprout::forward<Head>(head)}, size};
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}
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template<std::size_t S, typename Head, typename... Tail>
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static SPROUT_CONSTEXPR typename std::enable_if<
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S != sizeof...(Tail),
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copied_type
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>::type make_impl(typename copied_type::size_type size, Head&& head, Tail&&... tail) {
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return make_impl<S + 1>(size, sprout::forward<Tail>(tail)..., S >= size ? T() : sprout::forward<Head>(head));
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}
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public:
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static SPROUT_CONSTEXPR typename copied_type::size_type length() {
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return 0;
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}
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template<typename... Tail>
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static SPROUT_CONSTEXPR typename copied_type::size_type length(T const& head, Tail&&... tail) {
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return !head ? 0 : 1 + length(sprout::forward<Tail>(tail)...);
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}
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template<typename... Args>
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static SPROUT_CONSTEXPR copied_type make(typename copied_type::size_type size, Args&&... args) {
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return make_impl<0>(size, sprout::forward<Args>(args)...);
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}
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};
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} // namespace detail
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//
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// to_string
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//
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namespace detail {
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template<typename T, std::size_t N, sprout::index_t... Indexes>
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inline SPROUT_CONSTEXPR sprout::basic_string<T, N - 1> to_string_impl_1(
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T const(& arr)[N],
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typename sprout::basic_string<T, N - 1>::size_type n,
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sprout::index_tuple<Indexes...>
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)
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{
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return sprout::basic_string<T, N - 1>{{(Indexes < n ? arr[Indexes] : T())...}, n};
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}
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template<typename T, std::size_t N, sprout::index_t... Indexes>
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inline SPROUT_CONSTEXPR sprout::basic_string<T, N - 1> to_string_impl(
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T const(& arr)[N],
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sprout::index_tuple<Indexes...>
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)
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{
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return to_string_impl_1(arr, sprout::char_traits<T>::length(arr), sprout::index_tuple<Indexes...>());
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}
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} // namespace detail
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template<typename T, std::size_t N>
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inline SPROUT_CONSTEXPR sprout::basic_string<T, N - 1> to_string(T const(& arr)[N]) {
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return sprout::detail::to_string_impl(arr, typename sprout::index_range<0, N - 1>::type());
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}
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//
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// string_from_c_str
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//
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template<std::size_t N, typename T>
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inline SPROUT_CONSTEXPR sprout::basic_string<T, N> string_from_c_str(T const* s, std::size_t n) {
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return sprout::basic_string<T, N>::from_c_str(s, n);
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}
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template<std::size_t N, typename T>
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inline SPROUT_CONSTEXPR sprout::basic_string<T, N> string_from_c_str(T const* s) {
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return sprout::basic_string<T, N>::from_c_str(s);
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|
}
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} // namespace sprout
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#endif // #ifndef SPROUT_STRING_STRING_HPP
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