50 lines
1.7 KiB
Go
50 lines
1.7 KiB
Go
// Copyright (c) 2016 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.
|
|
|
|
package atomic
|
|
|
|
// String is an atomic type-safe wrapper around Value for strings.
|
|
type String struct{ v Value }
|
|
|
|
// NewString creates a String.
|
|
func NewString(str string) *String {
|
|
s := &String{}
|
|
if str != "" {
|
|
s.Store(str)
|
|
}
|
|
return s
|
|
}
|
|
|
|
// Load atomically loads the wrapped string.
|
|
func (s *String) Load() string {
|
|
v := s.v.Load()
|
|
if v == nil {
|
|
return ""
|
|
}
|
|
return v.(string)
|
|
}
|
|
|
|
// Store atomically stores the passed string.
|
|
// Note: Converting the string to an interface{} to store in the Value
|
|
// requires an allocation.
|
|
func (s *String) Store(str string) {
|
|
s.v.Store(str)
|
|
}
|