[782] | 1 | // -*- c++ -*- |
---|

| 2 | #ifndef EXTENDED_PAIR_H |
---|

| 3 | #define EXTENDED_PAIR_H |
---|

| 4 | |
---|

| 5 | template <typename T1, typename A1, typename T2, typename A2> |
---|

| 6 | struct extended_pair { |
---|

| 7 | typedef T1 first_type; |
---|

| 8 | typedef T2 second_type; |
---|

| 9 | |
---|

| 10 | extended_pair() : first(), second() {} |
---|

| 11 | |
---|

| 12 | extended_pair(A1 f, A2 s) : first(f), second(s) {} |
---|

| 13 | |
---|

| 14 | template <class Pair> |
---|

| 15 | extended_pair(const Pair& pair) : first(pair.first), second(pair.second) {} |
---|

| 16 | |
---|

| 17 | T1 first; |
---|

| 18 | T2 second; |
---|

| 19 | }; |
---|

| 20 | |
---|

| 21 | template <typename T1, typename T2, |
---|

| 22 | typename LA1, typename LA2, typename RA1, typename RA2> |
---|

| 23 | bool operator==(const extended_pair<T1, LA1, T2, LA2>& left, |
---|

| 24 | const extended_pair<T1, RA1, T2, RA2>& right) { |
---|

| 25 | return left.first == right.first && left.second == right.second; |
---|

| 26 | } |
---|

| 27 | |
---|

| 28 | template <typename T1, typename T2, |
---|

| 29 | typename LA1, typename LA2, typename RA1, typename RA2> |
---|

| 30 | bool operator!=(const extended_pair<T1, LA1, T2, LA2>& left, |
---|

| 31 | const extended_pair<T1, RA1, T2, RA2>& right) { |
---|

| 32 | return !(left == right); |
---|

| 33 | } |
---|

| 34 | |
---|

| 35 | template <typename T1, typename T2, |
---|

| 36 | typename LA1, typename LA2, typename RA1, typename RA2> |
---|

| 37 | bool operator<(const extended_pair<T1, LA1, T2, LA2>& left, |
---|

| 38 | const extended_pair<T1, RA1, T2, RA2>& right) { |
---|

| 39 | if (left.first == right.first) return left.second == right.second; |
---|

| 40 | return left.first < right.first; |
---|

| 41 | } |
---|

| 42 | |
---|

| 43 | template <typename T1, typename T2, |
---|

| 44 | typename LA1, typename LA2, typename RA1, typename RA2> |
---|

| 45 | bool operator>(const extended_pair<T1, LA1, T2, LA2>& left, |
---|

| 46 | const extended_pair<T1, RA1, T2, RA2>& right) { |
---|

| 47 | return right < left; |
---|

| 48 | } |
---|

| 49 | |
---|

| 50 | template <typename T1, typename T2, |
---|

| 51 | typename LA1, typename LA2, typename RA1, typename RA2> |
---|

| 52 | bool operator<=(const extended_pair<T1, LA1, T2, LA2>& left, |
---|

| 53 | const extended_pair<T1, RA1, T2, RA2>& right) { |
---|

| 54 | return !(right > left); |
---|

| 55 | } |
---|

| 56 | |
---|

| 57 | template <typename T1, typename T2, |
---|

| 58 | typename LA1, typename LA2, typename RA1, typename RA2> |
---|

| 59 | bool operator>=(const extended_pair<T1, LA1, T2, LA2>& left, |
---|

| 60 | const extended_pair<T1, RA1, T2, RA2>& right) { |
---|

| 61 | return !(right < left); |
---|

| 62 | } |
---|

| 63 | |
---|

| 64 | |
---|

| 65 | #endif |
---|