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107 lines
2.3 KiB
107 lines
2.3 KiB
// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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package gtype
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import (
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"bytes"
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"sync/atomic"
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"github.com/gogf/gf/v2/util/gconv"
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)
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// Bool is a struct for concurrent-safe operation for type bool.
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type Bool struct {
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value int32
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}
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var (
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bytesTrue = []byte("true")
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bytesFalse = []byte("false")
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)
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// NewBool creates and returns a concurrent-safe object for bool type,
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// with given initial value `value`.
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func NewBool(value ...bool) *Bool {
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t := &Bool{}
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if len(value) > 0 {
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if value[0] {
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t.value = 1
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} else {
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t.value = 0
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}
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}
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return t
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}
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// Clone clones and returns a new concurrent-safe object for bool type.
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func (v *Bool) Clone() *Bool {
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return NewBool(v.Val())
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}
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// Set atomically stores `value` into t.value and returns the previous value of t.value.
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func (v *Bool) Set(value bool) (old bool) {
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if value {
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old = atomic.SwapInt32(&v.value, 1) == 1
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} else {
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old = atomic.SwapInt32(&v.value, 0) == 1
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}
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return
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}
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// Val atomically loads and returns t.value.
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func (v *Bool) Val() bool {
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return atomic.LoadInt32(&v.value) > 0
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}
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// Cas executes the compare-and-swap operation for value.
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func (v *Bool) Cas(old, new bool) (swapped bool) {
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var oldInt32, newInt32 int32
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if old {
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oldInt32 = 1
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}
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if new {
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newInt32 = 1
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}
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return atomic.CompareAndSwapInt32(&v.value, oldInt32, newInt32)
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}
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// String implements String interface for string printing.
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func (v *Bool) String() string {
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if v.Val() {
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return "true"
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}
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return "false"
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}
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// MarshalJSON implements the interface MarshalJSON for json.Marshal.
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func (v Bool) MarshalJSON() ([]byte, error) {
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if v.Val() {
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return bytesTrue, nil
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}
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return bytesFalse, nil
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}
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// UnmarshalJSON implements the interface UnmarshalJSON for json.Unmarshal.
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func (v *Bool) UnmarshalJSON(b []byte) error {
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v.Set(gconv.Bool(bytes.Trim(b, `"`)))
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return nil
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}
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// UnmarshalValue is an interface implement which sets any type of value for `v`.
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func (v *Bool) UnmarshalValue(value interface{}) error {
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v.Set(gconv.Bool(value))
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return nil
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}
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// DeepCopy implements interface for deep copy of current type.
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func (v *Bool) DeepCopy() interface{} {
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if v == nil {
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return nil
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}
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return NewBool(v.Val())
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}
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