60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
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#pragma once
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/*
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* Copyright (C) 2024 Brett Terpstra
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef BLT_ITERATOR_ENUMERATE_H
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#define BLT_ITERATOR_ENUMERATE_H
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#include <blt/iterator/common.h>
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#include <blt/meta/meta.h>
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#include <tuple>
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namespace blt
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{
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namespace iterator
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{
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/**
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* struct which is returned by the enumerator.
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* @tparam T type to store.
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*/
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template<typename T>
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struct enumerate_item
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{
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blt::size_t index;
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T value;
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};
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template<typename Iter>
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class enumerate_wrapper : public passthrough_wrapper<Iter, enumerate_wrapper<Iter>>
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{
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public:
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using passthrough_wrapper<Iter, enumerate_wrapper<Iter>>::passthrough_wrapper;
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enumerate_item<meta::deref_return_t<Iter>> operator*() const
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{
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return *this->iter;
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}
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private:
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blt::size_t index;
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};
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}
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}
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#endif //BLT_ITERATOR_ENUMERATE_H
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