08f23f163e
Rather than hand-writing wrappers around atomic.Value, generate them automatically from the same template. The generator is at internal/gen-valuewrapper. The generator correctly handles generating wrapper structs for nillable types.
50 lines
1.6 KiB
Go
50 lines
1.6 KiB
Go
// Copyright (c) 2020 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package atomic
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// String is an atomic type-safe wrapper for string values.
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type String struct{ v Value }
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// NewString creates a new String.
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func NewString(v string) *String {
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x := &String{}
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if v != "" {
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x.Store(v)
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}
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return x
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}
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// Load atomically loads the wrapped string.
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func (x *String) Load() string {
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v := x.v.Load()
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if v == nil {
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return ""
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}
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return string(v.(string))
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}
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// Store atomically stores the passed string.
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//
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// NOTE: This will cause an allocation.
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func (x *String) Store(v string) {
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x.v.Store(string(v))
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}
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