| // Copyright 2018, 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 value |
| |
| import ( |
| "reflect" |
| "unsafe" |
| ) |
| |
| // Pointer is an opaque typed pointer and is guaranteed to be comparable. |
| type Pointer struct { |
| p unsafe.Pointer |
| t reflect.Type |
| } |
| |
| // PointerOf returns a Pointer from v, which must be a |
| // reflect.Ptr, reflect.Slice, or reflect.Map. |
| func PointerOf(v reflect.Value) Pointer { |
| // The proper representation of a pointer is unsafe.Pointer, |
| // which is necessary if the GC ever uses a moving collector. |
| return Pointer{unsafe.Pointer(v.Pointer()), v.Type()} |
| } |
