mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-12-23 21:25:49 +00:00
331 lines
13 KiB
C++
331 lines
13 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2014 Bolero MURAKAMI
|
|
https://github.com/bolero-MURAKAMI/Sprout
|
|
|
|
Distributed under the Boost Software License, Version 1.0. (See accompanying
|
|
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
|
|
=============================================================================*/
|
|
#ifndef SPROUT_ITERATOR_INSERT_RANGE_ITERATOR_HPP
|
|
#define SPROUT_ITERATOR_INSERT_RANGE_ITERATOR_HPP
|
|
|
|
#include <iterator>
|
|
#include <utility>
|
|
#include <type_traits>
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/iterator/next.hpp>
|
|
#include <sprout/iterator/prev.hpp>
|
|
#include <sprout/iterator/distance.hpp>
|
|
#include <sprout/iterator/type_traits/common.hpp>
|
|
#include <sprout/utility/swap.hpp>
|
|
#include <sprout/utility/limited.hpp>
|
|
#include <sprout/type_traits/arithmetic_promote.hpp>
|
|
|
|
namespace sprout {
|
|
//
|
|
// insert_range_iterator
|
|
//
|
|
template<typename DstIterator, typename SrcIterator>
|
|
class insert_range_iterator
|
|
: public std::iterator<
|
|
typename sprout::common_iterator_category<DstIterator, SrcIterator>::type,
|
|
typename sprout::common_iterator_value_type<DstIterator, SrcIterator>::type,
|
|
typename sprout::common_iterator_difference_type<DstIterator, SrcIterator>::type,
|
|
typename sprout::common_iterator_pointer<DstIterator, SrcIterator>::type,
|
|
typename sprout::common_iterator_reference<DstIterator, SrcIterator>::type
|
|
>
|
|
{
|
|
public:
|
|
typedef DstIterator iterator_type;
|
|
typedef SrcIterator iterator2_type;
|
|
typedef typename sprout::common_iterator_category<DstIterator, SrcIterator>::type iterator_category;
|
|
typedef typename sprout::common_iterator_value_type<DstIterator, SrcIterator>::type value_type;
|
|
typedef typename sprout::common_iterator_difference_type<DstIterator, SrcIterator>::type difference_type;
|
|
typedef typename sprout::common_iterator_pointer<DstIterator, SrcIterator>::type pointer;
|
|
typedef typename sprout::common_iterator_reference<DstIterator, SrcIterator>::type reference;
|
|
protected:
|
|
iterator_type current1;
|
|
iterator_type pos1;
|
|
iterator2_type current2;
|
|
iterator2_type first2;
|
|
iterator2_type last2;
|
|
private:
|
|
SPROUT_CONSTEXPR insert_range_iterator advance_impl(difference_type n) const {
|
|
return n >= 0
|
|
? current1 > pos1 ? insert_range_iterator(sprout::next(current1, n), pos1, current2, first2, last2)
|
|
: current1 == pos1 ? current2 == last2 ? insert_range_iterator(sprout::next(current1, n), pos1, current2, first2, last2)
|
|
: n <= sprout::distance(current2, last2) ? insert_range_iterator(current1, pos1, last2, sprout::next(current2, n), first2, last2)
|
|
: insert_range_iterator(sprout::next(current1, n - sprout::distance(current2, last2)), pos1, last2, first2, last2)
|
|
: n <= sprout::distance(current1, pos1) ? insert_range_iterator(sprout::next(current1, n), pos1, current2, first2, last2)
|
|
: n <= sprout::distance(current1, pos1) + sprout::distance(current2, last2)
|
|
? insert_range_iterator(pos1, pos1, last2, sprout::next(current2, n - sprout::distance(current1, pos1)), first2, last2)
|
|
: insert_range_iterator(sprout::next(current1, n - sprout::distance(current1, pos1) - sprout::distance(current2, last2)), pos1, last2, first2, last2)
|
|
: current1 < pos1 ? insert_range_iterator(sprout::next(current1, n), pos1, current2, first2, last2)
|
|
: current1 == pos1 ? current2 == first2 ? insert_range_iterator(sprout::next(current1, n), pos1, current2, first2, last2)
|
|
: -n <= sprout::distance(first2, current2) ? insert_range_iterator(current1, pos1, last2, sprout::next(current2, n), first2, last2)
|
|
: insert_range_iterator(sprout::next(current1, n - sprout::distance(first2, current2)), pos1, first2, first2, last2)
|
|
: -n <= sprout::distance(pos1, current1) ? insert_range_iterator(sprout::next(current1, n), pos1, current2, first2, last2)
|
|
: -n <= sprout::distance(pos1, current1) + sprout::distance(first2, current2)
|
|
? insert_range_iterator(pos1, pos1, last2, sprout::next(current2, n - sprout::distance(pos1, current1)), first2, last2)
|
|
: insert_range_iterator(sprout::next(current1, n - sprout::distance(pos1, current1) - sprout::distance(first2, current2)), pos1, first2, first2, last2)
|
|
;
|
|
}
|
|
public:
|
|
SPROUT_CONSTEXPR insert_range_iterator()
|
|
: current1(), pos1(), current2(), first2(), last2()
|
|
{}
|
|
insert_range_iterator(insert_range_iterator const&) = default;
|
|
SPROUT_CONSTEXPR insert_range_iterator(iterator_type it1, iterator_type pos1, iterator2_type it2, iterator2_type first2, iterator2_type last2)
|
|
: current1(it1), pos1(pos1)
|
|
, current2(it2), first2(first2), last2(last2)
|
|
{}
|
|
template<typename U, typename V>
|
|
SPROUT_CONSTEXPR insert_range_iterator(insert_range_iterator<U, V> const& it)
|
|
: current1(it.base()), pos1(it.position())
|
|
, current2(it.base2()), first2(it.first()), last2(it.last())
|
|
{}
|
|
template<typename U, typename V>
|
|
SPROUT_CXX14_CONSTEXPR insert_range_iterator& operator=(insert_range_iterator<U, V> const& it) {
|
|
insert_range_iterator temp(it);
|
|
temp.swap(*this);
|
|
return *this;
|
|
}
|
|
SPROUT_CONSTEXPR iterator_type base() const {
|
|
return current1;
|
|
}
|
|
SPROUT_CONSTEXPR iterator_type position() const {
|
|
return pos1;
|
|
}
|
|
SPROUT_CONSTEXPR iterator2_type base2() const {
|
|
return current2;
|
|
}
|
|
SPROUT_CONSTEXPR iterator2_type first() const {
|
|
return first2;
|
|
}
|
|
SPROUT_CONSTEXPR iterator2_type last() const {
|
|
return last2;
|
|
}
|
|
SPROUT_CONSTEXPR bool is_in_base() const {
|
|
return current1 != pos1 || current2 == last2;
|
|
}
|
|
SPROUT_CONSTEXPR reference operator*() const {
|
|
return is_in_base() ? *current1 : *current2;
|
|
}
|
|
SPROUT_CONSTEXPR pointer operator->() const {
|
|
return &*(*this);
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR insert_range_iterator& operator++() {
|
|
if (is_in_base()) {
|
|
++current1;
|
|
} else {
|
|
++current2;
|
|
}
|
|
return *this;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR insert_range_iterator operator++(int) {
|
|
insert_range_iterator result(*this);
|
|
if (is_in_base()) {
|
|
++current1;
|
|
} else {
|
|
++current2;
|
|
}
|
|
return result;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR insert_range_iterator& operator--() {
|
|
if (current1 != pos1 || current2 == first2) {
|
|
--current1;
|
|
} else {
|
|
--current2;
|
|
}
|
|
return *this;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR insert_range_iterator operator--(int) {
|
|
insert_range_iterator temp(*this);
|
|
if (current1 != pos1 || current2 == first2) {
|
|
--current1;
|
|
} else {
|
|
--current2;
|
|
}
|
|
return temp;
|
|
}
|
|
SPROUT_CONSTEXPR insert_range_iterator operator+(difference_type n) const {
|
|
return advance_impl(n);
|
|
}
|
|
SPROUT_CONSTEXPR insert_range_iterator operator-(difference_type n) const {
|
|
return advance_impl(-n);
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR insert_range_iterator& operator+=(difference_type n) {
|
|
insert_range_iterator temp(*this + n);
|
|
temp.swap(*this);
|
|
return *this;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR insert_range_iterator& operator-=(difference_type n) {
|
|
insert_range_iterator temp(*this - n);
|
|
temp.swap(*this);
|
|
return *this;
|
|
}
|
|
SPROUT_CONSTEXPR reference operator[](difference_type n) const {
|
|
return *(*this + n);
|
|
}
|
|
SPROUT_CONSTEXPR insert_range_iterator next() const {
|
|
return is_in_base() ? insert_range_iterator(sprout::next(current1), pos1, current2, first2, last2)
|
|
: insert_range_iterator(current1, pos1, sprout::next(current2), first2, last2)
|
|
;
|
|
}
|
|
SPROUT_CONSTEXPR insert_range_iterator prev() const {
|
|
return current1 != pos1 || current2 == first2 ? insert_range_iterator(sprout::prev(current1), pos1, current2, first2, last2)
|
|
: insert_range_iterator(current1, pos1, sprout::prev(current2), first2, last2)
|
|
;
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR void swap(insert_range_iterator& other)
|
|
SPROUT_NOEXCEPT_EXPR(
|
|
SPROUT_NOEXCEPT_EXPR(sprout::swap(current1, other.current1))
|
|
&& SPROUT_NOEXCEPT_EXPR(sprout::swap(pos1, other.pos1))
|
|
&& SPROUT_NOEXCEPT_EXPR(sprout::swap(current2, other.current2))
|
|
&& SPROUT_NOEXCEPT_EXPR(sprout::swap(first2, other.first2))
|
|
&& SPROUT_NOEXCEPT_EXPR(sprout::swap(last2, other.last2))
|
|
)
|
|
{
|
|
sprout::swap(current1, other.current1);
|
|
sprout::swap(pos1, other.pos1);
|
|
sprout::swap(current2, other.current2);
|
|
sprout::swap(first2, other.first2);
|
|
sprout::swap(last2, other.last2);
|
|
}
|
|
};
|
|
|
|
template<
|
|
typename DstIterator1, typename SrcIterator1,
|
|
typename DstIterator2, typename SrcIterator2
|
|
>
|
|
inline SPROUT_CONSTEXPR bool operator==(
|
|
sprout::insert_range_iterator<DstIterator1, SrcIterator1> const& lhs,
|
|
sprout::insert_range_iterator<DstIterator2, SrcIterator2> const& rhs
|
|
)
|
|
{
|
|
return lhs.base() == rhs.base() && lhs.base2() == rhs.base2();
|
|
}
|
|
template<
|
|
typename DstIterator1, typename SrcIterator1,
|
|
typename DstIterator2, typename SrcIterator2
|
|
>
|
|
inline SPROUT_CONSTEXPR bool operator!=(
|
|
sprout::insert_range_iterator<DstIterator1, SrcIterator1> const& lhs,
|
|
sprout::insert_range_iterator<DstIterator2, SrcIterator2> const& rhs
|
|
)
|
|
{
|
|
return !(lhs == rhs);
|
|
}
|
|
template<
|
|
typename DstIterator1, typename SrcIterator1,
|
|
typename DstIterator2, typename SrcIterator2
|
|
>
|
|
inline SPROUT_CONSTEXPR bool operator<(
|
|
sprout::insert_range_iterator<DstIterator1, SrcIterator1> const& lhs,
|
|
sprout::insert_range_iterator<DstIterator2, SrcIterator2> const& rhs
|
|
)
|
|
{
|
|
return lhs.is_in_base() && rhs.is_in_base() ? lhs.base() < rhs.base()
|
|
: !lhs.is_in_base() && !rhs.is_in_base() ? lhs.base2() < rhs.base2()
|
|
: lhs.is_in_base()
|
|
;
|
|
}
|
|
template<
|
|
typename DstIterator1, typename SrcIterator1,
|
|
typename DstIterator2, typename SrcIterator2
|
|
>
|
|
inline SPROUT_CONSTEXPR bool operator>(
|
|
sprout::insert_range_iterator<DstIterator1, SrcIterator1> const& lhs,
|
|
sprout::insert_range_iterator<DstIterator2, SrcIterator2> const& rhs
|
|
)
|
|
{
|
|
return rhs < lhs;
|
|
}
|
|
template<
|
|
typename DstIterator1, typename SrcIterator1,
|
|
typename DstIterator2, typename SrcIterator2
|
|
>
|
|
inline SPROUT_CONSTEXPR bool operator<=(
|
|
sprout::insert_range_iterator<DstIterator1, SrcIterator1> const& lhs,
|
|
sprout::insert_range_iterator<DstIterator2, SrcIterator2> const& rhs
|
|
)
|
|
{
|
|
return !(rhs < lhs);
|
|
}
|
|
template<
|
|
typename DstIterator1, typename SrcIterator1,
|
|
typename DstIterator2, typename SrcIterator2
|
|
>
|
|
inline SPROUT_CONSTEXPR bool operator>=(
|
|
sprout::insert_range_iterator<DstIterator1, SrcIterator1> const& lhs,
|
|
sprout::insert_range_iterator<DstIterator2, SrcIterator2> const& rhs
|
|
)
|
|
{
|
|
return !(lhs < rhs);
|
|
}
|
|
template<
|
|
typename DstIterator1, typename SrcIterator1,
|
|
typename DstIterator2, typename SrcIterator2
|
|
>
|
|
inline SPROUT_CONSTEXPR typename sprout::arithmetic_promote<
|
|
typename sprout::insert_range_iterator<DstIterator1, SrcIterator1>::difference_type,
|
|
typename sprout::insert_range_iterator<DstIterator2, SrcIterator2>::difference_type
|
|
>::type
|
|
operator-(
|
|
sprout::insert_range_iterator<DstIterator1, SrcIterator1> const& lhs,
|
|
sprout::insert_range_iterator<DstIterator2, SrcIterator2> const& rhs
|
|
)
|
|
{
|
|
return sprout::limited::plus(lhs.base() - rhs.base(), lhs.base2() - rhs.base2());
|
|
}
|
|
template<typename DstIterator, typename SrcIterator>
|
|
inline SPROUT_CONSTEXPR sprout::insert_range_iterator<DstIterator, SrcIterator> operator+(
|
|
typename sprout::insert_range_iterator<DstIterator, SrcIterator>::difference_type n,
|
|
sprout::insert_range_iterator<DstIterator, SrcIterator> const& it
|
|
)
|
|
{
|
|
return it + n;
|
|
}
|
|
|
|
//
|
|
// make_insert_range_iterator
|
|
//
|
|
template<typename DstIterator, typename SrcIterator>
|
|
inline SPROUT_CONSTEXPR sprout::insert_range_iterator<DstIterator, SrcIterator>
|
|
make_insert_range_iterator(DstIterator it1, DstIterator pos1, SrcIterator it2, SrcIterator first2, SrcIterator last2) {
|
|
return sprout::insert_range_iterator<DstIterator, SrcIterator>(it1, pos1, it2, first2, last2);
|
|
}
|
|
|
|
//
|
|
// swap
|
|
//
|
|
template<typename DstIterator, typename SrcIterator>
|
|
inline SPROUT_CXX14_CONSTEXPR void
|
|
swap(
|
|
sprout::insert_range_iterator<DstIterator, SrcIterator>& lhs,
|
|
sprout::insert_range_iterator<DstIterator, SrcIterator>& rhs
|
|
)
|
|
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(lhs.swap(rhs)))
|
|
{
|
|
lhs.swap(rhs);
|
|
}
|
|
|
|
//
|
|
// iterator_next
|
|
//
|
|
template<typename DstIterator, typename SrcIterator>
|
|
inline SPROUT_CONSTEXPR sprout::insert_range_iterator<DstIterator, SrcIterator>
|
|
iterator_next(sprout::insert_range_iterator<DstIterator, SrcIterator> const& it) {
|
|
return it.next();
|
|
}
|
|
|
|
//
|
|
// iterator_prev
|
|
//
|
|
template<typename DstIterator, typename SrcIterator>
|
|
inline SPROUT_CONSTEXPR sprout::insert_range_iterator<DstIterator, SrcIterator>
|
|
iterator_prev(sprout::insert_range_iterator<DstIterator, SrcIterator> const& it) {
|
|
return it.prev();
|
|
}
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_ITERATOR_INSERT_RANGE_ITERATOR_HPP
|