mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-29 01:03:45 +00:00
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
/*=============================================================================
|
|
Copyright (c) 2011-2019 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_REPLACE_ITERATOR_HPP
|
|
#define SPROUT_ITERATOR_REPLACE_ITERATOR_HPP
|
|
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/iterator/transform_iterator.hpp>
|
|
|
|
namespace sprout {
|
|
//
|
|
// replace_value
|
|
//
|
|
template<typename T>
|
|
class replace_value {
|
|
public:
|
|
typedef T result_type;
|
|
typedef T argument_type;
|
|
private:
|
|
T old_;
|
|
T new_;
|
|
public:
|
|
SPROUT_CONSTEXPR replace_value(T const& old_value, T const& new_value)
|
|
: old_(old_value), new_(new_value)
|
|
{}
|
|
SPROUT_CONSTEXPR T
|
|
operator()(T const& value) const {
|
|
return (value == old_) ? new_ : value;
|
|
}
|
|
};
|
|
|
|
//
|
|
// make_replace_iterator
|
|
//
|
|
template<typename T, typename Iterator>
|
|
inline SPROUT_CONSTEXPR sprout::transform_iterator<sprout::replace_value<T>, Iterator>
|
|
make_replace_iterator(Iterator it, T const& old_value, T const& new_value) {
|
|
return sprout::transform_iterator<sprout::replace_value<T>, Iterator>(
|
|
it, sprout::replace_value<T>(old_value, new_value)
|
|
);
|
|
}
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_ITERATOR_REPLACE_ITERATOR_HPP
|