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Diffstat (limited to 'libtransport/includes/hicn/transport/utils/enum_iterator.h')
-rw-r--r-- | libtransport/includes/hicn/transport/utils/enum_iterator.h | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/libtransport/includes/hicn/transport/utils/enum_iterator.h b/libtransport/includes/hicn/transport/utils/enum_iterator.h new file mode 100644 index 000000000..5e108b088 --- /dev/null +++ b/libtransport/includes/hicn/transport/utils/enum_iterator.h @@ -0,0 +1,43 @@ +/* + * 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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