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go-discogs/vendor/github.com/google/go-cmp/cmp/export_unsafe.go
Artem Piskun 0191d5c84e
Methods moved to interface, vendors updated (#40)
* Move to interfaces

* update vendor

Co-authored-by: Artem Piskun <artem.piskun@myoffice.team>
2020-06-01 10:08:11 +03:00

26 lines
801 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 !purego
package cmp
import (
"reflect"
"unsafe"
)
const supportExporters = true
// retrieveUnexportedField 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 retrieveUnexportedField(v reflect.Value, f reflect.StructField) reflect.Value {
// See https://github.com/google/go-cmp/issues/167 for discussion of the
// following expression.
return reflect.NewAt(f.Type, unsafe.Pointer(uintptr(unsafe.Pointer(v.UnsafeAddr()))+f.Offset)).Elem()
}