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graphengine/inc/graph/range_vistor.h

54 lines
1.5 KiB

/**
* Copyright 2019-2020 Huawei Technologies Co., Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef INC_GRAPH_RANGE_VISTOR_H_
#define INC_GRAPH_RANGE_VISTOR_H_
#include <vector>
template <class E, class O>
class RangeVistor {
public:
using Iterator = typename std::vector<E>::iterator;
using ConstIterator = typename std::vector<E>::const_iterator;
RangeVistor(O owner, const std::vector<E> &vs) : owner_(owner), elements_(vs) {}
~RangeVistor() {}
Iterator begin() { return elements_.begin(); }
Iterator end() { return elements_.end(); }
ConstIterator begin() const { return elements_.begin(); }
ConstIterator end() const { return elements_.end(); }
std::size_t size() const { return elements_.size(); }
bool empty() const { return elements_.empty(); }
E &at(std::size_t index) { return elements_.at(index); }
const E &at(std::size_t index) const { return elements_.at(index); }
private:
O owner_;
std::vector<E> elements_;
};
#endif // INC_GRAPH_RANGE_VISTOR_H_