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Sprout/sprout/string/string.hpp
bolero-MURAKAMI bb36ef6e8b support for N3658 (Compile-time integer sequences): index_tuple
rename: integer_seq -> integer_sequence, make_integer_sequence -> make_integer_sequence
add unsigned-index sequence: index_sequence(alias), make_index_sequence, index_sequence_for
add: integer_pack, index_pack
2013-05-10 19:52:39 +09:00

791 lines
26 KiB
C++

#ifndef SPROUT_STRING_STRING_HPP
#define SPROUT_STRING_STRING_HPP
#include <cstddef>
#include <string>
#include <algorithm>
#include <utility>
#include <stdexcept>
#include <type_traits>
#include <sprout/config.hpp>
#include <sprout/index_tuple/metafunction.hpp>
#include <sprout/array/array.hpp>
#include <sprout/array/make_array.hpp>
#include <sprout/iterator/reverse_iterator.hpp>
#include <sprout/iterator/operation.hpp>
#include <sprout/algorithm/find.hpp>
#include <sprout/utility/forward.hpp>
#include <sprout/utility/swap.hpp>
#include <sprout/string/char_traits.hpp>
#include <sprout/string/npos.hpp>
#include <sprout/string/detail/operations.hpp>
#include HDR_ALGORITHM_MIN_MAX_SSCRISK_CEL_OR_SPROUT
#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
# include <sprout/iterator/index_iterator.hpp>
#endif
namespace sprout {
//
// basic_string
//
template<typename T, std::size_t N, typename Traits = sprout::char_traits<T> >
class basic_string {
public:
typedef T value_type;
#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
typedef sprout::index_iterator<basic_string&, true> iterator;
typedef sprout::index_iterator<basic_string const&, true> const_iterator;
#else
typedef T* iterator;
typedef T const* const_iterator;
#endif
typedef T& reference;
typedef T const& const_reference;
typedef std::size_t size_type;
typedef std::ptrdiff_t difference_type;
typedef T* pointer;
typedef T const* const_pointer;
typedef sprout::reverse_iterator<iterator> reverse_iterator;
typedef sprout::reverse_iterator<const_iterator> const_reverse_iterator;
typedef Traits traits_type;
#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
private:
template<typename Iterator>
class is_string_iterator
: public std::false_type
{};
template<typename Iterator>
class is_string_iterator<Iterator const>
: public is_string_iterator<Iterator>
{};
template<typename Iterator>
class is_string_iterator<Iterator volatile>
: public is_string_iterator<Iterator>
{};
template<typename Iterator>
class is_string_iterator<Iterator const volatile>
: public is_string_iterator<Iterator>
{};
template<std::size_t N2>
class is_string_iterator<sprout::index_iterator<basic_string<T, N2, Traits>&, true> >
: public std::true_type
{};
template<std::size_t N2>
class is_string_iterator<sprout::index_iterator<basic_string<T, N2, Traits> const&, true> >
: public std::true_type
{};
#endif
public:
SPROUT_STATIC_CONSTEXPR size_type npos = sprout::npos_t::get<size_type>::value;
SPROUT_STATIC_CONSTEXPR size_type static_size = N;
private:
template<sprout::index_t... Indexes>
static SPROUT_CONSTEXPR basic_string
from_c_str_impl(value_type const* s, size_type n, sprout::index_tuple<Indexes...>) {
return basic_string{{(Indexes < n ? s[Indexes] : T())...}, n};
}
template<std::size_t M, sprout::index_t... Indexes>
static SPROUT_CONSTEXPR basic_string<T, sizeof...(Indexes), Traits>
implicit_conversion_impl(T const(& elems)[M], size_type len, sprout::index_tuple<Indexes...>) {
return sprout::basic_string<T, sizeof...(Indexes), Traits>{{(Indexes < M - 1 ? elems[Indexes] : T())...}, len};
}
public:
static SPROUT_CONSTEXPR basic_string from_c_str(T const* s, size_type n) {
return !(N < n)
? from_c_str_impl(s, n, sprout::make_index_tuple<N>::make())
: throw std::out_of_range("basic_string<>: index out of range")
;
}
static SPROUT_CONSTEXPR basic_string from_c_str(T const* s) {
return from_c_str(s, traits_type::length(s));
}
static SPROUT_CONSTEXPR basic_string from_c_str(std::basic_string<T, Traits> const& s) {
return from_c_str(s.data(), s.size());
}
public:
value_type elems[static_size + 1];
size_type len;
public:
// construct/copy/destroy:
template<std::size_t N2>
basic_string&
operator=(basic_string<T, N2, Traits> const& rhs) {
return assign(rhs);
}
basic_string&
operator=(value_type const* rhs) {
return assign(rhs);
}
basic_string&
operator=(value_type rhs) {
return assign(1, rhs);
}
// iterators:
#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
iterator
begin() SPROUT_NOEXCEPT {
return iterator(*this, 0);
}
SPROUT_CONSTEXPR const_iterator
begin() const SPROUT_NOEXCEPT {
return const_iterator(*this, 0);
}
iterator
end() SPROUT_NOEXCEPT {
return iterator(*this, size());
}
SPROUT_CONSTEXPR const_iterator
end() const SPROUT_NOEXCEPT {
return const_iterator(*this, size());
}
#else
iterator
begin() SPROUT_NOEXCEPT {
return data();
}
SPROUT_CONSTEXPR const_iterator
begin() const SPROUT_NOEXCEPT {
return data();
}
iterator end()
SPROUT_NOEXCEPT {
return data() + size();
}
SPROUT_CONSTEXPR const_iterator
end() const SPROUT_NOEXCEPT {
return data() + size();
}
#endif
reverse_iterator
rbegin() SPROUT_NOEXCEPT {
return const_reverse_iterator(end());
}
SPROUT_CONSTEXPR const_reverse_iterator
rbegin() const SPROUT_NOEXCEPT {
return const_reverse_iterator(end());
}
reverse_iterator
rend() SPROUT_NOEXCEPT {
return const_reverse_iterator(begin());
}
SPROUT_CONSTEXPR const_reverse_iterator
rend() const SPROUT_NOEXCEPT {
return const_reverse_iterator(begin());
}
#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
SPROUT_CONSTEXPR const_iterator
cbegin() const SPROUT_NOEXCEPT {
return const_iterator(*this, 0);
}
SPROUT_CONSTEXPR const_iterator
cend() const SPROUT_NOEXCEPT {
return const_iterator(*this, size());
}
#else
SPROUT_CONSTEXPR const_iterator
cbegin() const SPROUT_NOEXCEPT {
return data();
}
SPROUT_CONSTEXPR const_iterator
cend() const SPROUT_NOEXCEPT {
return data() + size();
}
#endif
SPROUT_CONSTEXPR const_reverse_iterator
crbegin() const SPROUT_NOEXCEPT {
return const_reverse_iterator(end());
}
SPROUT_CONSTEXPR const_reverse_iterator
crend() const SPROUT_NOEXCEPT {
return const_reverse_iterator(begin());
}
// capacity:
SPROUT_CONSTEXPR size_type
size() const SPROUT_NOEXCEPT {
return len;
}
SPROUT_CONSTEXPR size_type
length() const SPROUT_NOEXCEPT {
return size();
}
SPROUT_CONSTEXPR size_type
max_size() const SPROUT_NOEXCEPT {
return static_size;
}
void
resize(size_type n, value_type c) {
maxcheck(n);
if (n > size()) {
traits_type::assign(end(), n - size(), c);
}
traits_type::assign(begin() + n, static_size - n, value_type());
len = n;
}
void
resize(size_type n) {
resize(n, value_type());
}
void
clear() {
traits_type::assign(begin(), static_size, value_type());
len = 0;
}
SPROUT_CONSTEXPR bool
empty() const SPROUT_NOEXCEPT {
return size() == 0;
}
// element access:
reference
operator[](size_type i) {
return elems[i];
}
SPROUT_CONSTEXPR const_reference
operator[](size_type i) const {
return elems[i];
}
reference
at(size_type i) {
return i < size() ? elems[i]
: (throw std::out_of_range("basic_string<>: index out of range"), elems[i])
;
}
SPROUT_CONSTEXPR const_reference
at(size_type i) const {
return i < size() ? elems[i]
: (throw std::out_of_range("basic_string<>: index out of range"), elems[i])
;
}
reference
front() {
return elems[0];
}
SPROUT_CONSTEXPR const_reference
front() const {
return elems[0];
}
reference
back() {
return elems[size() - 1];
}
SPROUT_CONSTEXPR const_reference
back() const {
return elems[size() - 1];
}
// modifiers:
template<std::size_t N2>
basic_string&
assign(basic_string<T, N2, Traits> const& str) {
return assign(str.begin(), str.size());
}
template<std::size_t N2>
basic_string&
assign(basic_string<T, N2, Traits> const& str, size_type pos, size_type n) {
if (str.size() < pos + n) {
throw std::out_of_range("basic_string<>: index out of range");
}
return assign(str.begin() + pos, n);
}
basic_string&
assign(value_type const* s, size_type n) {
maxcheck(n);
for (size_type i = 0; i < n; ++i) {
traits_type::assign(elems[i], s[i]);
}
for (size_type i = n; i < static_size; ++i) {
traits_type::assign(elems[i], value_type());
}
len = n;
return *this;
}
basic_string&
assign(value_type const* s) {
return assign(s, traits_type::length(s));
}
basic_string&
assign(size_type n, value_type c) {
maxcheck(n);
traits_type::assign(begin(), n, c);
traits_type::assign(begin() + n, static_size - n, value_type());
len = n;
return *this;
}
template<typename Iterator>
basic_string&
assign(Iterator first, Iterator last) {
size_type n = 0;
for (; n < static_size || first != last; ++n, ++first) {
traits_type::assign(elems[n], *first);
}
for (size_type i = n; i < static_size; ++i) {
traits_type::assign(elems[i], value_type());
}
len = n;
return *this;
}
void
swap(basic_string& other)
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(std::swap(std::declval<T&>(), std::declval<T&>())))
{
std::swap_ranges(other.begin(), other.begin() + other.max_size(), begin());
sprout::swap(len, other.len);
}
// string operations:
SPROUT_CONSTEXPR const_pointer
c_str() const SPROUT_NOEXCEPT {
return data();
}
pointer
data() SPROUT_NOEXCEPT {
return &elems[0];
}
SPROUT_CONSTEXPR const_pointer
data() const SPROUT_NOEXCEPT {
return &elems[0];
}
template<std::size_t N2>
SPROUT_CONSTEXPR size_type
find(basic_string<T, N2, Traits> const& str, size_type pos = 0) const SPROUT_NOEXCEPT {
return sprout::string_detail::find_impl<basic_string>(begin(), size(), str.begin(), pos, str.size());
}
SPROUT_CONSTEXPR size_type
find(value_type const* s, size_type pos, size_type n) const {
return sprout::string_detail::find_impl<basic_string>(begin(), size(), s, pos, n);
}
SPROUT_CONSTEXPR size_type
find(value_type const* s, size_type pos = 0) const {
return find(s, pos, traits_type::length(s));
}
SPROUT_CONSTEXPR size_type
find(value_type c, size_type pos = 0) const {
return sprout::string_detail::find_c_impl<basic_string>(begin(), size(), c, pos);
}
template<std::size_t N2>
SPROUT_CONSTEXPR size_type
rfind(basic_string<T, N2, Traits> const& str, size_type pos = npos) const SPROUT_NOEXCEPT {
return sprout::string_detail::rfind_impl<basic_string>(begin(), size(), str.begin(), pos, str.size());
}
SPROUT_CONSTEXPR size_type
rfind(value_type const* s, size_type pos, size_type n) const {
return sprout::string_detail::rfind_impl<basic_string>(begin(), size(), s, pos, n);
}
SPROUT_CONSTEXPR size_type
rfind(value_type const* s, size_type pos = npos) const {
return rfind(s, pos, traits_type::length(s));
}
SPROUT_CONSTEXPR size_type
rfind(value_type c, size_type pos = npos) const {
return sprout::string_detail::rfind_c_impl<basic_string>(begin(), size(), c, pos);
}
template<std::size_t N2>
SPROUT_CONSTEXPR size_type
find_first_of(basic_string<T, N2, Traits> const& str, size_type pos = 0) const SPROUT_NOEXCEPT {
return sprout::string_detail::find_first_of_impl<basic_string>(begin(), size(), str.begin(), pos, str.size());
}
SPROUT_CONSTEXPR size_type
find_first_of(value_type const* s, size_type pos, size_type n) const {
return sprout::string_detail::find_first_of_impl<basic_string>(begin(), size(), s, pos, n);
}
SPROUT_CONSTEXPR size_type
find_first_of(value_type const* s, size_type pos = 0) const {
return find_first_of(s, pos, traits_type::length(s));
}
SPROUT_CONSTEXPR size_type
find_first_of(value_type c, size_type pos = 0) const {
return find(c, pos);
}
template<std::size_t N2>
SPROUT_CONSTEXPR size_type
find_last_of(basic_string<T, N2, Traits> const& str, size_type pos = npos) const SPROUT_NOEXCEPT {
return sprout::string_detail::find_last_of_impl<basic_string>(begin(), size(), str.begin(), pos, str.size());
}
SPROUT_CONSTEXPR size_type
find_last_of(value_type const* s, size_type pos, size_type n) const {
return sprout::string_detail::find_last_of_impl<basic_string>(begin(), size(), s, pos, n);
}
SPROUT_CONSTEXPR size_type
find_last_of(value_type const* s, size_type pos = npos) const {
return find_last_of(s, pos, traits_type::length(s));
}
SPROUT_CONSTEXPR size_type
find_last_of(value_type c, size_type pos = npos) const {
return rfind(c, pos);
}
template<std::size_t N2>
SPROUT_CONSTEXPR size_type
find_first_not_of(basic_string<T, N2, Traits> const& str, size_type pos = 0) const SPROUT_NOEXCEPT {
return sprout::string_detail::find_first_not_of_impl<basic_string>(begin(), size(), str.begin(), pos, str.size());
}
SPROUT_CONSTEXPR size_type
find_first_not_of(value_type const* s, size_type pos, size_type n) const {
return sprout::string_detail::find_first_not_of_impl<basic_string>(begin(), size(), s, pos, n);
}
SPROUT_CONSTEXPR size_type
find_first_not_of(value_type const* s, size_type pos = 0) const {
return find_first_not_of(s, pos, traits_type::length(s));
}
SPROUT_CONSTEXPR size_type
find_first_not_of(value_type c, size_type pos = 0) const {
return sprout::string_detail::find_first_not_of_c_impl<basic_string>(begin(), size(), c, pos);
}
template<std::size_t N2>
SPROUT_CONSTEXPR size_type
find_last_not_of(basic_string<T, N2, Traits> const& str, size_type pos = npos) const SPROUT_NOEXCEPT {
return sprout::string_detail::find_last_not_of_impl<basic_string>(begin(), size(), str.begin(), pos, str.size());
}
SPROUT_CONSTEXPR size_type
find_last_not_of(value_type const* s, size_type pos, size_type n) const {
return sprout::string_detail::find_last_not_of_impl<basic_string>(begin(), size(), s, pos, n);
}
SPROUT_CONSTEXPR size_type
find_last_not_of(value_type const* s, size_type pos = npos) const {
return find_last_not_of(s, pos, traits_type::length(s));
}
SPROUT_CONSTEXPR size_type
find_last_not_of(value_type c, size_type pos = npos) const {
return sprout::string_detail::find_last_not_of_c_impl<basic_string>(begin(), size(), c, pos);
}
SPROUT_CONSTEXPR basic_string
substr(size_type pos = 0, size_type n = npos) const {
return !(size() < pos) ? n == npos
? substr(pos, size() - pos)
: from_c_str(c_str() + pos, n)
: throw std::out_of_range("basic_string<>: index out of range")
;
}
template<std::size_t N2>
SPROUT_CONSTEXPR int
compare(basic_string<T, N2, Traits> const& str) const {
return compare(0, size(), str.begin(), str.size());
}
SPROUT_CONSTEXPR int
compare(value_type const* s) const {
return compare(0, size(), s, traits_type::length(s));
}
template<std::size_t N2>
SPROUT_CONSTEXPR int
compare(size_type pos1, size_type n1, basic_string<T, N2, Traits> const& str) const {
return compare(pos1, n1, str, 0, npos);
}
SPROUT_CONSTEXPR int
compare(size_type pos1, size_type n1, value_type const* s) const {
return compare(pos1, n1, s, traits_type::length(s));
}
template<std::size_t N2>
SPROUT_CONSTEXPR int
compare(size_type pos1, size_type n1, basic_string<T, N2, Traits> const& str, size_type pos2, size_type n2) const {
return !(str.size() < pos2)
? compare(pos1, n1, str.begin() + pos2, NS_SSCRISK_CEL_OR_SPROUT::min(n2, str.size() - pos2))
: throw std::out_of_range("basic_string<>: index out of range")
;
}
SPROUT_CONSTEXPR int
compare(size_type pos1, size_type n1, value_type const* s, size_type n2) const {
return !(size() < pos1)
? sprout::string_detail::compare_impl<basic_string>(begin(), pos1, NS_SSCRISK_CEL_OR_SPROUT::min(n1, size() - pos1), s, n2)
: throw std::out_of_range("basic_string<>: index out of range")
;
}
// others:
template<std::size_t N2, typename Enable = typename std::enable_if<(N2 > N)>::type>
SPROUT_CONSTEXPR operator basic_string<T, N2, Traits>() const {
return implicit_conversion_impl(
elems, size(),
sprout::make_index_tuple<N2>::make()
);
}
#if SPROUT_USE_EXPLICIT_CONVERSION_OPERATORS
template<typename Allocator>
explicit operator std::basic_string<T, Traits, Allocator>() const {
return std::basic_string<T, Traits, Allocator>(data(), size());
}
#endif
pointer
c_array() SPROUT_NOEXCEPT {
return &elems[0];
}
void
rangecheck(size_type i) const {
if (i >= size()) {
throw std::out_of_range("basic_string<>: index out of range");
}
}
void
maxcheck(size_type n) const {
if (n > static_size) {
throw std::out_of_range("basic_string<>: index out of range");
}
}
#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
template<typename ConstIterator>
typename std::enable_if<
is_string_iterator<ConstIterator>::value,
basic_string&
>::type
assign(ConstIterator s, size_type n) {
maxcheck(n);
for (size_type i = 0; i < n; ++i) {
traits_type::assign(elems[i], s[i]);
}
for (size_type i = n; i < static_size; ++i) {
traits_type::assign(elems[i], value_type());
}
len = n;
return *this;
}
template<typename ConstIterator>
typename std::enable_if<
is_string_iterator<ConstIterator>::value,
basic_string&
>::type
assign(ConstIterator s) {
return assign(s, traits_type::length(s));
}
template<typename ConstIterator>
typename std::enable_if<
is_string_iterator<ConstIterator>::value,
basic_string&
>::type
operator=(ConstIterator rhs) {
return assign(rhs);
}
template<typename ConstIterator>
SPROUT_CONSTEXPR typename std::enable_if<
is_string_iterator<ConstIterator>::value,
size_type
>::type
find(ConstIterator s, size_type pos, size_type n) const {
return sprout::string_detail::find_impl<basic_string>(begin(), size(), s, pos, n);
}
template<typename ConstIterator>
SPROUT_CONSTEXPR typename std::enable_if<
is_string_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_iterator<ConstIterator>::value,
size_type
>::type
rfind(ConstIterator s, size_type pos, size_type n) const {
return sprout::string_detail::rfind_impl<basic_string>(begin(), size(), s, pos, n);
}
template<typename ConstIterator>
SPROUT_CONSTEXPR typename std::enable_if<
is_string_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_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>(begin(), size(), s, pos, n);
}
template<typename ConstIterator>
SPROUT_CONSTEXPR typename std::enable_if<
is_string_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_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>(begin(), size(), s, pos, n);
}
template<typename ConstIterator>
SPROUT_CONSTEXPR typename std::enable_if<
is_string_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_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>(begin(), size(), s, pos, n);
}
template<typename ConstIterator>
SPROUT_CONSTEXPR typename std::enable_if<
is_string_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>(s, pos, traits_type::length(s));
}
template<typename ConstIterator>
SPROUT_CONSTEXPR typename std::enable_if<
is_string_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>(begin(), size(), s, pos, n);
}
template<typename ConstIterator>
SPROUT_CONSTEXPR typename std::enable_if<
is_string_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>(s, pos, traits_type::length(s));
}
template<typename ConstIterator>
SPROUT_CONSTEXPR typename std::enable_if<
is_string_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_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_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>(begin(), pos1, NS_SSCRISK_CEL_OR_SPROUT::min(n1, size() - pos1), s, n2)
: throw std::out_of_range("basic_string<>: index out of range")
;
}
#endif
};
template<typename T, std::size_t N, typename Traits>
SPROUT_CONSTEXPR_OR_CONST typename sprout::basic_string<T, N, Traits>::size_type sprout::basic_string<T, N, Traits>::npos;
template<typename T, std::size_t N, typename Traits>
SPROUT_CONSTEXPR_OR_CONST typename sprout::basic_string<T, N, Traits>::size_type sprout::basic_string<T, N, Traits>::static_size;
//
// swap
//
template<typename T, std::size_t N, typename Traits>
inline void
swap(sprout::basic_string<T, N, Traits>& lhs, sprout::basic_string<T, N, Traits>& rhs)
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(lhs.swap(rhs)))
{
lhs.swap(rhs);
}
namespace detail {
template<typename Container>
struct make_construct_impl;
template<typename T, std::size_t N, typename Traits>
struct make_construct_impl<sprout::basic_string<T, N, Traits> > {
private:
typedef sprout::basic_string<T, N, Traits> copied_type;
private:
template<std::size_t M>
static SPROUT_CONSTEXPR typename copied_type::size_type
length_impl(sprout::array<T, M> const& arr) {
return sprout::distance(arr.begin(), sprout::find(arr.begin(), arr.end(), T()));
}
template<typename... Args, sprout::index_t... Indexes>
static SPROUT_CONSTEXPR copied_type
make_impl(typename copied_type::size_type size, sprout::index_tuple<Indexes...>, Args&&... args) {
return copied_type{{(Indexes < size ? sprout::forward<Args>(args) : T())...}, size};
}
public:
template<typename... Args>
static SPROUT_CONSTEXPR typename copied_type::size_type
length(Args&&... args) {
return length_impl(sprout::make_array<T>(sprout::forward<Args>(args)...));
}
template<typename... Args>
static SPROUT_CONSTEXPR copied_type
make(Args&&... args) {
return make_impl(
length(args...),
sprout::index_pack<Args...>::make(),
sprout::forward<Args>(args)...
);
}
template<typename... Args>
static SPROUT_CONSTEXPR copied_type
make(typename copied_type::size_type size, Args&&... args) {
return make_impl(
size,
sprout::index_pack<Args...>::make(),
sprout::forward<Args>(args)...
);
}
};
} // namespace detail
namespace detail {
template<typename T, std::size_t N, sprout::index_t... Indexes>
inline SPROUT_CONSTEXPR sprout::basic_string<T, N - 1>
to_string_impl_1(
T const(& arr)[N], typename sprout::basic_string<T, N - 1>::size_type n,
sprout::index_tuple<Indexes...>
)
{
return sprout::basic_string<T, N - 1>{{(Indexes < n ? arr[Indexes] : T())...}, n};
}
template<typename T, std::size_t N>
inline SPROUT_CONSTEXPR sprout::basic_string<T, N - 1>
to_string_impl(T const(& arr)[N]) {
typedef sprout::char_traits_helper<typename sprout::basic_string<T, N - 1>::traits_type> helper_type;
return to_string_impl_1(arr, helper_type::length(arr, N - 1), sprout::make_index_tuple<N - 1>::make());
}
} // namespace detail
//
// to_string
//
template<typename T, std::size_t N, typename Traits>
inline SPROUT_CONSTEXPR sprout::basic_string<T, N, Traits>
to_string(sprout::basic_string<T, N, Traits> const& s) {
return s;
}
template<typename T, std::size_t N>
inline SPROUT_CONSTEXPR sprout::basic_string<T, N - 1>
to_string(T const(& arr)[N]) {
return sprout::detail::to_string_impl(arr);
}
//
// string_from_c_str
//
template<std::size_t N, typename T>
inline SPROUT_CONSTEXPR sprout::basic_string<T, N>
string_from_c_str(T const* s, std::size_t n) {
return sprout::basic_string<T, N>::from_c_str(s, n);
}
template<std::size_t N, typename T>
inline SPROUT_CONSTEXPR sprout::basic_string<T, N>
string_from_c_str(T const* s) {
return sprout::basic_string<T, N>::from_c_str(s);
}
template<std::size_t N, typename T, typename Traits>
inline SPROUT_CONSTEXPR sprout::basic_string<T, N, Traits>
string_from_c_str(std::basic_string<T, Traits> const& s) {
return sprout::basic_string<T, N, Traits>::from_c_str(s);
}
} // namespace sprout
#endif // #ifndef SPROUT_STRING_STRING_HPP