mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-14 10:39:05 +00:00
234 lines
7.5 KiB
C++
234 lines
7.5 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2015 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_VALARRAY_MASK_ARRAY_HPP
|
|
#define SPROUT_VALARRAY_MASK_ARRAY_HPP
|
|
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/workaround/std/cstddef.hpp>
|
|
#include <sprout/utility/swap.hpp>
|
|
#include <sprout/iterator/index_iterator.hpp>
|
|
#include <sprout/iterator/reverse_iterator.hpp>
|
|
#include <sprout/algorithm/count.hpp>
|
|
#include <sprout/algorithm/cxx14/copy.hpp>
|
|
#include <sprout/algorithm/cxx14/fill.hpp>
|
|
#include <sprout/valarray/valarray_fwd.hpp>
|
|
#include <sprout/detail/algorithm/mask_index.hpp>
|
|
|
|
namespace sprout {
|
|
//
|
|
// mask_array
|
|
//
|
|
template<typename T, std::size_t N, std::size_t M>
|
|
class mask_array {
|
|
friend class sprout::valarray<T, N>;
|
|
private:
|
|
typedef sprout::valarray<T, N> valarray_type;
|
|
public:
|
|
typedef typename valarray_type::value_type value_type;
|
|
typedef typename valarray_type::reference reference;
|
|
typedef typename valarray_type::size_type size_type;
|
|
typedef typename valarray_type::difference_type difference_type;
|
|
typedef typename valarray_type::pointer pointer;
|
|
typedef sprout::index_iterator<mask_array const&> iterator;
|
|
typedef sprout::reverse_iterator<iterator> reverse_iterator;
|
|
private:
|
|
typedef sprout::valarray<bool, M> mask_type;
|
|
typedef sprout::valarray<size_type, (M < N ? M : N)> indexes_type;
|
|
public:
|
|
SPROUT_STATIC_CONSTEXPR size_type static_size = valarray_type::static_size;
|
|
private:
|
|
sprout::value_holder<valarray_type&> arr_;
|
|
indexes_type indexes_;
|
|
private:
|
|
mask_array() = delete;
|
|
SPROUT_CONSTEXPR mask_array(sprout::valarray<T, N>& arr, mask_type const& mask)
|
|
: arr_(arr)
|
|
, indexes_(
|
|
sprout::detail::mask_index(
|
|
mask.begin(), mask.end(),
|
|
indexes_type(sprout::count(mask.begin(), mask.end(), true))
|
|
)
|
|
)
|
|
{}
|
|
public:
|
|
SPROUT_CONSTEXPR mask_array(mask_array const& other)
|
|
: arr_(other.arr_), indexes_(other.indexes_)
|
|
{}
|
|
template<std::size_t N2, std::size_t M2>
|
|
SPROUT_CXX14_CONSTEXPR mask_array const&
|
|
operator=(mask_array<T, N2, M2> const& ar) const {
|
|
sprout::copy(ar.begin(), ar.end(), begin());
|
|
return *this;
|
|
}
|
|
template<std::size_t N2>
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
operator=(sprout::valarray<T, N2> const& ar) const {
|
|
sprout::copy(ar.begin(), ar.end(), begin());
|
|
}
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
operator=(T const& value) const {
|
|
sprout::fill(begin(), end(), value);
|
|
}
|
|
template<std::size_t N2>
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
operator+=(sprout::valarray<T, N2> const& xs) const {
|
|
iterator it2 = begin();
|
|
for (typename sprout::valarray<T, N2>::const_iterator it = xs.begin(), last = xs.end(); it != last; ++it, ++it2) {
|
|
*it2 += *it;
|
|
}
|
|
}
|
|
template<std::size_t N2>
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
operator-=(sprout::valarray<T, N2> const& xs) const {
|
|
iterator it2 = begin();
|
|
for (typename sprout::valarray<T, N2>::const_iterator it = xs.begin(), last = xs.end(); it != last; ++it, ++it2) {
|
|
*it2 -= *it;
|
|
}
|
|
}
|
|
template<std::size_t N2>
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
operator*=(sprout::valarray<T, N2> const& xs) const {
|
|
iterator it2 = begin();
|
|
for (typename sprout::valarray<T, N2>::const_iterator it = xs.begin(), last = xs.end(); it != last; ++it, ++it2) {
|
|
*it2 *= *it;
|
|
}
|
|
}
|
|
template<std::size_t N2>
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
operator/=(sprout::valarray<T, N2> const& xs) const {
|
|
iterator it2 = begin();
|
|
for (typename sprout::valarray<T, N2>::const_iterator it = xs.begin(), last = xs.end(); it != last; ++it, ++it2) {
|
|
*it2 /= *it;
|
|
}
|
|
}
|
|
template<std::size_t N2>
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
operator%=(sprout::valarray<T, N2> const& xs) const {
|
|
iterator it2 = begin();
|
|
for (typename sprout::valarray<T, N2>::const_iterator it = xs.begin(), last = xs.end(); it != last; ++it, ++it2) {
|
|
*it2 %= *it;
|
|
}
|
|
}
|
|
template<std::size_t N2>
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
operator&=(sprout::valarray<T, N2> const& xs) const {
|
|
iterator it2 = begin();
|
|
for (typename sprout::valarray<T, N2>::const_iterator it = xs.begin(), last = xs.end(); it != last; ++it, ++it2) {
|
|
*it2 &= *it;
|
|
}
|
|
}
|
|
template<std::size_t N2>
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
operator|=(sprout::valarray<T, N2> const& xs) const {
|
|
iterator it2 = begin();
|
|
for (typename sprout::valarray<T, N2>::const_iterator it = xs.begin(), last = xs.end(); it != last; ++it, ++it2) {
|
|
*it2 |= *it;
|
|
}
|
|
}
|
|
template<std::size_t N2>
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
operator^=(sprout::valarray<T, N2> const& xs) const {
|
|
iterator it2 = begin();
|
|
for (typename sprout::valarray<T, N2>::const_iterator it = xs.begin(), last = xs.end(); it != last; ++it, ++it2) {
|
|
*it2 ^= *it;
|
|
}
|
|
}
|
|
template<std::size_t N2>
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
operator<<=(sprout::valarray<T, N2> const& xs) const {
|
|
iterator it2 = begin();
|
|
for (typename sprout::valarray<T, N2>::const_iterator it = xs.begin(), last = xs.end(); it != last; ++it, ++it2) {
|
|
*it2 <<= *it;
|
|
}
|
|
}
|
|
template<std::size_t N2>
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
operator>>=(sprout::valarray<T, N2> const& xs) const {
|
|
iterator it2 = begin();
|
|
for (typename sprout::valarray<T, N2>::const_iterator it = xs.begin(), last = xs.end(); it != last; ++it, ++it2) {
|
|
*it2 >>= *it;
|
|
}
|
|
}
|
|
|
|
SPROUT_CXX14_CONSTEXPR void
|
|
swap(mask_array& other) SPROUT_NOEXCEPT {
|
|
sprout::swap(arr_, other.arr_);
|
|
sprout::swap(indexes_, other.indexes_);
|
|
}
|
|
|
|
// iterators:
|
|
SPROUT_CONSTEXPR iterator
|
|
begin() const {
|
|
return iterator(*this, 0);
|
|
}
|
|
SPROUT_CONSTEXPR iterator
|
|
end() const {
|
|
return iterator(*this, size());
|
|
}
|
|
SPROUT_CONSTEXPR reverse_iterator
|
|
rbegin() const {
|
|
return reverse_iterator(end());
|
|
}
|
|
SPROUT_CONSTEXPR reverse_iterator
|
|
rend() const {
|
|
return reverse_iterator(begin());
|
|
}
|
|
// capacity:
|
|
SPROUT_CONSTEXPR size_type
|
|
size() const SPROUT_NOEXCEPT {
|
|
return indexes_.size();
|
|
}
|
|
SPROUT_CONSTEXPR bool
|
|
empty() const SPROUT_NOEXCEPT {
|
|
return size() == 0;
|
|
}
|
|
// element access:
|
|
SPROUT_CONSTEXPR reference
|
|
operator[](size_type i) const {
|
|
return (*arr_)[indexes_[i]];
|
|
}
|
|
SPROUT_CONSTEXPR reference
|
|
at(size_type i) const {
|
|
return arr_->at(indexes_.at(i));
|
|
}
|
|
SPROUT_CONSTEXPR reference
|
|
front() const {
|
|
return (*this)[0];
|
|
}
|
|
SPROUT_CONSTEXPR reference
|
|
back() const {
|
|
return (*this)[size() - 1];
|
|
}
|
|
// others:
|
|
SPROUT_CONSTEXPR iterator
|
|
nth(size_type i) const {
|
|
return i < size() ? begin() + i
|
|
: (throw std::out_of_range("mask_array<>: index out of range"), iterator())
|
|
;
|
|
}
|
|
SPROUT_CONSTEXPR size_type
|
|
index_of(iterator p) const SPROUT_NOEXCEPT {
|
|
return p - begin();
|
|
}
|
|
};
|
|
template<typename T, std::size_t N, std::size_t M>
|
|
SPROUT_CONSTEXPR_OR_CONST typename sprout::mask_array<T, N, M>::size_type sprout::mask_array<T, N, M>::static_size;
|
|
|
|
//
|
|
// swap
|
|
//
|
|
template<typename T, std::size_t N, std::size_t M>
|
|
inline SPROUT_CXX14_CONSTEXPR void
|
|
swap(sprout::mask_array<T, N, M>& lhs, sprout::mask_array<T, N, M>& rhs)
|
|
SPROUT_NOEXCEPT_IF_EXPR(lhs.swap(rhs))
|
|
{
|
|
lhs.swap(rhs);
|
|
}
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_VALARRAY_MASK_ARRAY_HPP
|