pointer_go118.go

// Copyright (c) 2022 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

//go:build go1.18
// +build go1.18

package atomic

import (
	"encoding/json"
	"fmt"
)

// String returns a human readable representation of a Pointer's underlying value.
func (p *Pointer[T]) String() string {
	return fmt.Sprint(p.Load())
}

// MarshalJSON encodes the wrapped pointer into JSON.
func (p *Pointer[T]) MarshalJSON() ([]byte, error) {
	return json.Marshal(p.Load())
}

// UnmarshalJSON decodes JSON into the wrapped pointer.
func (p *Pointer[T]) UnmarshalJSON(b []byte) error {
	var v T
	if err := json.Unmarshal(b, &v); err != nil {
		return err
	}
	p.Store(&v)
	return nil
}