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functional: remove reverse_iteration, use boost::range instead

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This commit is contained in:
Andrzej Rybczak
2016-12-14 08:01:31 +01:00
parent 2e0de374a3
commit 30830e338a
3 changed files with 7 additions and 50 deletions
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48
src/utility/functional.h
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@@ -24,43 +24,6 @@
#include <boost/locale/encoding_utf.hpp>
#include <utility>
template <typename BaseT>
struct reversed_iteration
{
reversed_iteration(BaseT &base_)
: base(base_) { }
BaseT &base;
};
template <typename BaseT>
reversed_iteration<BaseT> reverse_iteration(BaseT &base_) {
return reversed_iteration<BaseT>(base_);
}
template <typename BaseT>
auto begin(reversed_iteration<BaseT> &rev) -> decltype(rev.base.rbegin()) {
return rev.base.rbegin();
}
template <typename BaseT>
auto begin(reversed_iteration<const BaseT> &rev) -> decltype(rev.base.rbegin()) {
return rev.base.rbegin();
}
template <typename BaseT>
auto end(reversed_iteration<BaseT> &rev) -> decltype(rev.base.rend()) {
return rev.base.rend();
}
template <typename BaseT>
auto end(reversed_iteration<const BaseT> &rev) -> decltype(rev.base.rend()) {
return rev.base.rend();
}
template <typename ValueT>
struct pointer_extractor
{
typedef pointer_extractor type;
ValueT *operator()(ValueT &v) const { return &v; }
};
/// Map over the first element in range satisfying the predicate.
template <typename InputIterator, typename PredicateT, typename MapT>
InputIterator find_map_first(InputIterator first, InputIterator last, PredicateT &&p, MapT &&f)
@@ -81,17 +44,6 @@ void find_map_all(InputIterator first, InputIterator last, PredicateT &&p, MapT
while (it != last);
}
// identity function object
struct id_
{
template <typename ValueT>
constexpr auto operator()(ValueT &&v) const noexcept
-> decltype(std::forward<ValueT>(v))
{
return std::forward<ValueT>(v);
}
};
// convert string to appropriate type
template <typename TargetT, typename SourceT>
struct convertString