/usr/include/boost/histogram/axis
Edit: /usr/include/boost/histogram/axis/iterator.hpp (1977B)
// Copyright 2015-2017 Hans Dembinski
//
// 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 BOOST_HISTOGRAM_AXIS_ITERATOR_HPP
#define BOOST_HISTOGRAM_AXIS_ITERATOR_HPP
#include
#include
#include
namespace boost {
namespace histogram {
namespace axis {
template
class iterator : public detail::iterator_adaptor, index_type,
decltype(std::declval().bin(0))> {
public:
/// Make iterator from axis and index.
iterator(const Axis& axis, index_type idx)
: iterator::iterator_adaptor_(idx), axis_(axis) {}
/// Return current bin object.
decltype(auto) operator*() const { return axis_.bin(this->base()); }
private:
const Axis& axis_;
};
/// Uses CRTP to inject iterator logic into Derived.
template
class iterator_mixin {
public:
using const_iterator = iterator;
using const_reverse_iterator = std::reverse_iterator;
/// Bin iterator to beginning of the axis (read-only).
const_iterator begin() const noexcept {
return const_iterator(*static_cast(this), 0);
}
/// Bin iterator to the end of the axis (read-only).
const_iterator end() const noexcept {
return const_iterator(*static_cast(this),
static_cast(this)->size());
}
/// Reverse bin iterator to the last entry of the axis (read-only).
const_reverse_iterator rbegin() const noexcept {
return std::make_reverse_iterator(end());
}
/// Reverse bin iterator to the end (read-only).
const_reverse_iterator rend() const noexcept {
return std::make_reverse_iterator(begin());
}
};
} // namespace axis
} // namespace histogram
} // namespace boost
#endif