| 35 | enum class */ |
| 36 | template <typename C, C beginVal, C endVal> |
| 37 | class enum_iterator |
| 38 | { |
| 39 | typedef typename std::underlying_type<C>::type val_t; |
| 40 | int val; |
| 41 | |
| 42 | public: |
| 43 | enum_iterator(const C& f) : val(static_cast<val_t>(f)) {} |
| 44 | enum_iterator() : val(static_cast<val_t>(beginVal)) {} |
| 45 | enum_iterator operator++() |
| 46 | { |
| 47 | ++val; |
| 48 | return *this; |
| 49 | } |
| 50 | C operator*() { return static_cast<C>(val); } |
| 51 | enum_iterator begin() { return *this; } // default ctor is good |
| 52 | enum_iterator end() |
| 53 | { |
| 54 | static const enum_iterator endIter = ++enum_iterator(endVal); // cache it |
| 55 | return endIter; |
| 56 | } |
| 57 | bool operator!=(const enum_iterator& i) { return val != i.val; } |
| 58 | }; |
| 59 | |
| 60 | } // namespace lbann |
| 61 | #endif // LBANN_ENUM_ITERATOR_H |