29 lines
545 B
C++
29 lines
545 B
C++
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#pragma once
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#include "utils/iterator/wrap.hpp"
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#include "utils/option.hpp"
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namespace iter
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{
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template <class T, class I>
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class OneTimeAccessor
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{
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public:
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OneTimeAccessor() : it(Option<Wrap<T, I>>()) {}
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OneTimeAccessor(I &&it) : it(Wrap<T, I>(std::move(it))) {}
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Wrap<T, I> begin() { return it.take(); }
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Wrap<T, I> end() { return Wrap<T, I>(); }
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private:
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Option<Wrap<T, I>> it;
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};
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template <class I>
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auto make_one_time_accessor(I &&iter)
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{
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return OneTimeAccessor<decltype(iter.next().take()), I>(std::move(iter));
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}
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}
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