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Backported helper classes to pair.h from Godot4.

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Relintai 2022-08-08 00:05:12 +02:00
parent 37eb131c50
commit 4090cb34d7
1 changed files with 49 additions and 1 deletions
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50
core/pair.h
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@ -30,6 +30,9 @@
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "core/hashfuncs.h"
#include "core/typedefs.h"
template <class F, class S>
struct Pair {
F first;
@ -59,7 +62,52 @@ bool operator!=(const Pair<F, S> &pair, const Pair<F, S> &other) {
template <class F, class S>
struct PairSort {
bool operator()(const Pair<F, S> &A, const Pair<F, S> &B) const {
return A.first < B.first;
if (A.first != B.first) {
return A.first < B.first;
}
return A.second < B.second;
}
};
template <class F, class S>
struct PairHash {
static uint32_t hash(const Pair<F, S> &P) {
uint64_t h1 = HashMapHasherDefault::hash(P.first);
uint64_t h2 = HashMapHasherDefault::hash(P.second);
return hash_one_uint64((h1 << 32) | h2);
}
};
template <class K, class V>
struct KeyValue {
const K key;
V value;
void operator=(const KeyValue &p_kv) = delete;
_FORCE_INLINE_ KeyValue(const KeyValue &p_kv) :
key(p_kv.key),
value(p_kv.value) {
}
_FORCE_INLINE_ KeyValue(const K &p_key, const V &p_value) :
key(p_key),
value(p_value) {
}
};
template <class K, class V>
bool operator==(const KeyValue<K, V> &pair, const KeyValue<K, V> &other) {
return (pair.key == other.key) && (pair.value == other.value);
}
template <class K, class V>
bool operator!=(const KeyValue<K, V> &pair, const KeyValue<K, V> &other) {
return (pair.key != other.key) || (pair.value != other.value);
}
template <class K, class V>
struct KeyValueSort {
bool operator()(const KeyValue<K, V> &A, const KeyValue<K, V> &B) const {
return A.key < B.key;
}
};