lemon-0.x: src/hugo/extended_pair.h@acc83957ee4a

     1 // -*- c++ -*-

     2 #ifndef EXTENDED_PAIR_H

     3 #define EXTENDED_PAIR_H

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

     6 struct extended_pair {

     7   typedef T1 first_type;

     8   typedef T2 second_type;

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

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

    14   template <class Pair>

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

    17   T1 first;

    18   T2 second;

    19 };

    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 }

    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 }

    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 }

    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 }

    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 }

    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 }

    65 #endif

author	klao
	Wed, 15 Sep 2004 14:25:44 +0000
changeset 858	acc83957ee4a
child 897	ef09eee53b09
permissions	-rw-r--r--