// @generated Code generated by gen-atomicwrapper. // Copyright (c) 2020-2023 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 for string values. type String struct { _ nocmp // disallow non-atomic comparison v Value } var _zeroString string // NewString creates a new String. func NewString(val string) *String { x := &String{} if val != _zeroString { x.Store(val) } return x } // Load atomically loads the wrapped string. func (x *String) Load() string { return unpackString(x.v.Load()) } // Store atomically stores the passed string. func (x *String) Store(val string) { x.v.Store(packString(val)) } // CompareAndSwap is an atomic compare-and-swap for string values. func (x *String) CompareAndSwap(old, new string) (swapped bool) { if x.v.CompareAndSwap(packString(old), packString(new)) { return true } if old == _zeroString { // If the old value is the empty value, then it's possible the // underlying Value hasn't been set and is nil, so retry with nil. return x.v.CompareAndSwap(nil, packString(new)) } return false } // Swap atomically stores the given string and returns the old // value. func (x *String) Swap(val string) (old string) { return unpackString(x.v.Swap(packString(val))) }