libgo/go/sort/slice_go14.go

   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 file.
   4
   5 //go:build !go1.8
   6 // +build !go1.8
   7
   8 package sort
   9
  10 import "reflect"
  11
  12 var reflectValueOf = reflect.ValueOf
  13
  14 func reflectSwapper(x any) func(int, int) {
  15         v := reflectValueOf(x)
  16         tmp := reflect.New(v.Type().Elem()).Elem()
  17         return func(i, j int) {
  18                 a, b := v.Index(i), v.Index(j)
  19                 tmp.Set(a)
  20                 a.Set(b)
  21                 b.Set(tmp)
  22         }
  23 }