90 lines
1.9 KiB
C++
90 lines
1.9 KiB
C++
// -*- c-basic-offset: 4 -*-
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#ifndef CLICK_PAIR_HH
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#define CLICK_PAIR_HH
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#include <click/hashcode.hh>
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#include <click/type_traits.hh>
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CLICK_DECLS
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template <class T, class U>
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struct Pair {
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typedef T first_type;
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typedef U second_type;
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typedef T key_type;
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typedef const T &key_const_reference;
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T first;
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U second;
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inline Pair()
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: first(), second() {
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}
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inline Pair(typename fast_argument<T>::type t,
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typename fast_argument<U>::type u)
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: first(t), second(u) {
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}
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inline Pair(const Pair<T, U> &p)
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: first(p.first), second(p.second) {
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}
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template <typename V, typename W>
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inline Pair(const Pair<V, W> &p)
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: first(p.first), second(p.second) {
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}
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typedef hashcode_t (Pair<T, U>::*unspecified_bool_type)() const;
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inline operator unspecified_bool_type() const {
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return first || second ? &Pair<T, U>::hashcode : 0;
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}
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inline const T &hashkey() const {
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return first;
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}
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inline hashcode_t hashcode() const;
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template <typename V, typename W>
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Pair<T, U> &operator=(const Pair<V, W> &p) {
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first = p.first;
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second = p.second;
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return *this;
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}
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};
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template <class T, class U>
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inline bool operator==(const Pair<T, U> &a, const Pair<T, U> &b)
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{
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return a.first == b.first && a.second == b.second;
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}
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template <class T, class U>
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inline bool operator!=(const Pair<T, U> &a, const Pair<T, U> &b)
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{
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return a.first != b.first || a.second != b.second;
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}
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template <class T, class U>
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inline bool operator<(const Pair<T, U> &a, const Pair<T, U> &b)
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{
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return a.first < b.first
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|| (!(b.first < a.first) && a.second < b.second);
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}
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template <class T, class U>
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inline hashcode_t Pair<T, U>::hashcode() const
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{
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return (CLICK_NAME(hashcode)(first) << 7) ^ CLICK_NAME(hashcode)(second);
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}
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template <class T, class U>
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inline Pair<T, U> make_pair(T t, U u)
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{
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return Pair<T, U>(t, u);
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}
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CLICK_ENDDECLS
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#endif
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