1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
// Copyright 2024 LiveKit, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package utils
import (
"reflect"
)
func DeepCopy[T any](v T) T {
return deepCopy(reflect.ValueOf(v)).Interface().(T)
}
func deepCopy(v reflect.Value) reflect.Value {
switch v.Type().Kind() {
case reflect.Array:
c := reflect.New(v.Type()).Elem()
for i := range v.Len() {
c.Index(i).Set(deepCopy(v.Index(i)))
}
return c
case reflect.Map:
if v.IsNil() {
return v
}
c := reflect.MakeMap(v.Type())
for mr := v.MapRange(); mr.Next(); {
c.SetMapIndex(deepCopy(mr.Key()), deepCopy(mr.Value()))
}
return c
case reflect.Pointer:
if v.IsNil() {
return v
}
c := reflect.New(v.Type().Elem())
c.Elem().Set(deepCopy(v.Elem()))
return c
case reflect.Slice:
if v.IsNil() {
return v
}
c := reflect.MakeSlice(v.Type(), v.Len(), v.Cap())
for i := range v.Len() {
c.Index(i).Set(deepCopy(v.Index(i)))
}
return c
case reflect.Struct:
c := reflect.New(v.Type()).Elem()
for i := range v.NumField() {
if c.Field(i).CanSet() {
c.Field(i).Set(deepCopy(v.Field(i)))
}
}
return c
default: // Bool, Chan, Complex128, Complex64, Float32, Float64, Func, Int, Int16, Int32, Int64, Int8, Interface, String, Uint, Uint16, Uint32, Uint64, Uint8, Uintptr, UnsafePointer
return v
}
}