| Matteo Scandolo | a6a3aee | 2019-11-26 13:30:14 -0700 | [diff] [blame] | 1 | // Copyright 2017, The Go Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE.md file. |
| 4 | |
| 5 | // +build !purego,!appengine,!js |
| 6 | |
| 7 | package cmp |
| 8 | |
| 9 | import ( |
| 10 | "reflect" |
| 11 | "unsafe" |
| 12 | ) |
| 13 | |
| 14 | const supportAllowUnexported = true |
| 15 | |
| 16 | // unsafeRetrieveField uses unsafe to forcibly retrieve any field from a struct |
| 17 | // such that the value has read-write permissions. |
| 18 | // |
| 19 | // The parent struct, v, must be addressable, while f must be a StructField |
| 20 | // describing the field to retrieve. |
| 21 | func unsafeRetrieveField(v reflect.Value, f reflect.StructField) reflect.Value { |
| 22 | return reflect.NewAt(f.Type, unsafe.Pointer(v.UnsafeAddr()+f.Offset)).Elem() |
| 23 | } |