Курнат Андрей
74 lines
1.8 KiB
Go
74 lines
1.8 KiB
Go
// Copyright 2024 The NATS Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package syncx
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import "sync"
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// Map is a type-safe wrapper around sync.Map.
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// It is safe for concurrent use.
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// The zero value of Map is an empty map ready to use.
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type Map[K comparable, V any] struct {
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m sync.Map
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}
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func (m *Map[K, V]) Load(key K) (V, bool) {
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v, ok := m.m.Load(key)
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if !ok {
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var empty V
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return empty, false
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}
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return v.(V), true
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}
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func (m *Map[K, V]) Store(key K, value V) {
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m.m.Store(key, value)
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}
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func (m *Map[K, V]) Delete(key K) {
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m.m.Delete(key)
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}
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func (m *Map[K, V]) Range(f func(key K, value V) bool) {
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m.m.Range(func(key, value any) bool {
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return f(key.(K), value.(V))
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})
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}
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func (m *Map[K, V]) LoadOrStore(key K, value V) (V, bool) {
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v, loaded := m.m.LoadOrStore(key, value)
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return v.(V), loaded
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}
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func (m *Map[K, V]) LoadAndDelete(key K) (V, bool) {
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v, ok := m.m.LoadAndDelete(key)
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if !ok {
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var empty V
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return empty, false
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}
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return v.(V), true
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}
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func (m *Map[K, V]) CompareAndSwap(key K, old, new V) bool {
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return m.m.CompareAndSwap(key, old, new)
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}
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func (m *Map[K, V]) CompareAndDelete(key K, value V) bool {
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return m.m.CompareAndDelete(key, value)
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}
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func (m *Map[K, V]) Swap(key K, value V) (V, bool) {
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previous, loaded := m.m.Swap(key, value)
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return previous.(V), loaded
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}
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