mihomo/common/atomic/value.go

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package atomic
import (
"encoding/json"
"sync/atomic"
)
func DefaultValue[T any]() T {
var defaultValue T
return defaultValue
}
type TypedValue[T any] struct {
value atomic.Value
}
func (t *TypedValue[T]) Load() T {
value := t.value.Load()
if value == nil {
return DefaultValue[T]()
}
return value.(T)
}
func (t *TypedValue[T]) Store(value T) {
t.value.Store(value)
}
func (t *TypedValue[T]) Swap(new T) T {
old := t.value.Swap(new)
if old == nil {
return DefaultValue[T]()
}
return old.(T)
}
func (t *TypedValue[T]) CompareAndSwap(old, new T) bool {
return t.value.CompareAndSwap(old, new)
}
func (t *TypedValue[T]) MarshalJSON() ([]byte, error) {
return json.Marshal(t.Load())
}
func (t *TypedValue[T]) UnmarshalJSON(b []byte) error {
var v T
if err := json.Unmarshal(b, &v); err != nil {
return err
}
t.Store(v)
return nil
}
func NewTypedValue[T any](t T) *TypedValue[T] {
v := &TypedValue[T]{}
v.Store(t)
return v
}