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Copy pathiterator_impl.hpp
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Copy pathiterator_impl.hpp
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131 lines (121 loc) · 2.62 KB
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#include "std_span_array.hpp"
namespace nd {
inline array data_iterator::operator*() const
{
return array(impl::std_span_array_nd(nullptr, data_, shape_, dtype_));
}
template <typename T>
inline array iterator::concrete_holder<T>::value() const
{
return *value_;
}
inline array iterator::operator*() const
{
switch (iterator_.index()) {
case 0:
return *std::get<0>(iterator_);
case 1:
return *std::get<1>(iterator_);
case 2:
return *std::get<2>(iterator_);
case 3:
return std::get<3>(iterator_)->value();
default:
ASSERT(false);
}
return array();
}
inline void iterator::operator++()
{
switch (iterator_.index()) {
case 0:
++std::get<0>(iterator_);
break;
case 1:
++std::get<1>(iterator_);
break;
case 2:
++std::get<2>(iterator_);
break;
case 3:
++(*std::get<3>(iterator_));
break;
default:
ASSERT(false);
}
}
inline void iterator::operator+=(int n)
{
switch (iterator_.index()) {
case 0:
std::get<0>(iterator_) += n;
break;
case 1:
std::get<1>(iterator_) += n;
break;
case 2:
std::get<2>(iterator_) += n;
break;
case 3:
(*std::get<3>(iterator_)) += n;
break;
default:
ASSERT(false);
}
}
inline void iterator::operator--()
{
switch (iterator_.index()) {
case 0:
--std::get<0>(iterator_);
break;
case 1:
--std::get<1>(iterator_);
break;
case 2:
--std::get<2>(iterator_);
break;
case 3:
--(*std::get<3>(iterator_));
break;
default:
ASSERT(false);
}
}
inline void iterator::operator-=(int n)
{
switch (iterator_.index()) {
case 0:
std::get<0>(iterator_) -= n;
break;
case 1:
std::get<1>(iterator_) -= n;
break;
case 2:
std::get<2>(iterator_) -= n;
break;
case 3:
(*std::get<3>(iterator_)) -= n;
break;
default:
ASSERT(false);
}
}
inline std::ptrdiff_t iterator::operator-(const iterator& other) const
{
ASSERT(iterator_.index() == other.iterator_.index());
switch (iterator_.index()) {
case 0:
return std::get<0>(iterator_) - std::get<0>(other.iterator_);
case 1:
return std::get<1>(iterator_) - std::get<1>(other.iterator_);
case 2:
return std::get<2>(iterator_) - std::get<2>(other.iterator_);
case 3:
return std::get<3>(iterator_)->operator-(*std::get<3>(other.iterator_));
default:
ASSERT(false);
return 0;
}
}
}