80 lines
2.8 KiB
C++
80 lines
2.8 KiB
C++
/// \file
|
|
// Range v3 library
|
|
//
|
|
// Copyright Eric Niebler 2014
|
|
//
|
|
// Use, modification and distribution is subject to 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)
|
|
//
|
|
// Project home: https://github.com/ericniebler/range-v3
|
|
//
|
|
#ifndef RANGES_V3_ALGORITHM_REPLACE_COPY_HPP
|
|
#define RANGES_V3_ALGORITHM_REPLACE_COPY_HPP
|
|
|
|
#include <meta/meta.hpp>
|
|
#include <range/v3/range_fwd.hpp>
|
|
#include <range/v3/begin_end.hpp>
|
|
#include <range/v3/range_concepts.hpp>
|
|
#include <range/v3/range_traits.hpp>
|
|
#include <range/v3/utility/iterator_concepts.hpp>
|
|
#include <range/v3/utility/iterator_traits.hpp>
|
|
#include <range/v3/utility/functional.hpp>
|
|
#include <range/v3/utility/static_const.hpp>
|
|
#include <range/v3/utility/tagged_pair.hpp>
|
|
#include <range/v3/algorithm/tagspec.hpp>
|
|
|
|
namespace ranges
|
|
{
|
|
inline namespace v3
|
|
{
|
|
/// \ingroup group-concepts
|
|
template<typename I, typename O, typename T0, typename T1, typename P = ident>
|
|
using ReplaceCopyable = meta::strict_and<
|
|
InputIterator<I>,
|
|
OutputIterator<O, T1 const &>,
|
|
IndirectlyCopyable<I, O>,
|
|
IndirectRelation<equal_to, projected<I, P>, T0 const *>>;
|
|
|
|
/// \addtogroup group-algorithms
|
|
/// @{
|
|
struct replace_copy_fn
|
|
{
|
|
template<typename I, typename S, typename O, typename T0, typename T1, typename P = ident,
|
|
CONCEPT_REQUIRES_(ReplaceCopyable<I, O, T0, T1, P>() && Sentinel<S, I>())>
|
|
tagged_pair<tag::in(I), tag::out(O)> operator()(I begin, S end, O out, T0 const & old_value, T1 const & new_value, P proj = {}) const
|
|
{
|
|
for(; begin != end; ++begin, ++out)
|
|
{
|
|
auto &&x = *begin;
|
|
if(invoke(proj, x) == old_value)
|
|
*out = new_value;
|
|
else
|
|
*out = (decltype(x) &&) x;
|
|
}
|
|
return {begin, out};
|
|
}
|
|
|
|
template<typename Rng, typename O, typename T0, typename T1, typename P = ident,
|
|
typename I = iterator_t<Rng>,
|
|
CONCEPT_REQUIRES_(ReplaceCopyable<I, O, T0, T1, P>() && Range<Rng>())>
|
|
tagged_pair<tag::in(safe_iterator_t<Rng>), tag::out(O)>
|
|
operator()(Rng &&rng, O out, T0 const & old_value, T1 const & new_value,
|
|
P proj = {}) const
|
|
{
|
|
return (*this)(begin(rng), end(rng), std::move(out), old_value, new_value,
|
|
std::move(proj));
|
|
}
|
|
};
|
|
|
|
/// \sa `replace_copy_fn`
|
|
/// \ingroup group-algorithms
|
|
RANGES_INLINE_VARIABLE(with_braced_init_args<replace_copy_fn>,
|
|
replace_copy)
|
|
/// @}
|
|
} // namespace v3
|
|
} // namespace ranges
|
|
|
|
#endif // include guard
|