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/*
* Copyright (c) 2021 Cisco and/or its affiliates.
* 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.
*/
#include <type_traits>
template <typename C, C begin_val, C end_val>
class Iterator {
typedef typename std::underlying_type<C>::type val_t;
int val;
public:
Iterator(const C& f) : val(static_cast<val_t>(f)) {}
Iterator() : val(static_cast<val_t>(begin_val)) {}
Iterator operator++() {
++val;
return *this;
}
C operator*() { return static_cast<C>(val); }
Iterator begin() { return *this; } // default ctor is good
Iterator end() {
static const Iterator endIter = ++Iterator(end_val); // cache it
return endIter;
}
bool operator!=(const Iterator& i) { return val != i.val; }
};
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