24 lines
681 B
Go
24 lines
681 B
Go
|
// Copyright 2017, The Go Authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the LICENSE.md file.
|
||
|
|
|
||
|
|
// +build !appengine,!js
|
||
|
|
|
||
|
|
package cmp
|
||
|
|
|
||
|
|
import (
|
||
|
|
"reflect"
|
||
|
|
"unsafe"
|
||
|
|
)
|
||
|
|
|
||
|
|
const supportAllowUnexported = true
|
||
|
|
|
||
|
|
// unsafeRetrieveField uses unsafe to forcibly retrieve any field from a struct
|
||
|
|
// such that the value has read-write permissions.
|
||
|
|
//
|
||
|
|
// The parent struct, v, must be addressable, while f must be a StructField
|
||
|
|
// describing the field to retrieve.
|
||
|
|
func unsafeRetrieveField(v reflect.Value, f reflect.StructField) reflect.Value {
|
||
|
|
return reflect.NewAt(f.Type, unsafe.Pointer(v.UnsafeAddr()+f.Offset)).Elem()
|
||
|
|
}
|