mirror of
https://github.com/rclone/rclone.git
synced 2025-03-11 05:25:14 +08:00
401cf81034
This commit modernizes Go usage. This was done with:
go run golang.org/x/tools/gopls/internal/analysis/modernize/cmd/modernize@latest -fix -test ./...
Then files needed to be `go fmt`ed and a few comments needed to be
restored.
The modernizations include replacing
- if/else conditional assignment by a call to the built-in min or max functions added in go1.21
- sort.Slice(x, func(i, j int) bool) { return s[i] < s[j] } by a call to slices.Sort(s), added in go1.21
- interface{} by the 'any' type added in go1.18
- append([]T(nil), s...) by slices.Clone(s) or slices.Concat(s), added in go1.21
- loop around an m[k]=v map update by a call to one of the Collect, Copy, Clone, or Insert functions from the maps package, added in go1.21
- []byte(fmt.Sprintf...) by fmt.Appendf(nil, ...), added in go1.19
- append(s[:i], s[i+1]...) by slices.Delete(s, i, i+1), added in go1.21
- a 3-clause for i := 0; i < n; i++ {} loop by for i := range n {}, added in go1.22
58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
// Package structs is for manipulating structures with reflection
|
|
package structs
|
|
|
|
import (
|
|
"reflect"
|
|
)
|
|
|
|
// SetFrom sets the public members of a from b
|
|
//
|
|
// a and b should be pointers to structs
|
|
//
|
|
// a can be a different type from b
|
|
//
|
|
// Only the Fields which have the same name and assignable type on a
|
|
// and b will be set.
|
|
//
|
|
// This is useful for copying between almost identical structures that
|
|
// are frequently present in auto-generated code for cloud storage
|
|
// interfaces.
|
|
func SetFrom(a, b any) {
|
|
ta := reflect.TypeOf(a).Elem()
|
|
tb := reflect.TypeOf(b).Elem()
|
|
va := reflect.ValueOf(a).Elem()
|
|
vb := reflect.ValueOf(b).Elem()
|
|
for i := range tb.NumField() {
|
|
bField := vb.Field(i)
|
|
tbField := tb.Field(i)
|
|
name := tbField.Name
|
|
aField := va.FieldByName(name)
|
|
taField, found := ta.FieldByName(name)
|
|
if found && aField.IsValid() && bField.IsValid() && aField.CanSet() && tbField.Type.AssignableTo(taField.Type) {
|
|
aField.Set(bField)
|
|
}
|
|
}
|
|
}
|
|
|
|
// SetDefaults for a from b
|
|
//
|
|
// a and b should be pointers to the same kind of struct
|
|
//
|
|
// This copies the public members only from b to a. This is useful if
|
|
// you can't just use a struct copy because it contains a private
|
|
// mutex, e.g. as http.Transport.
|
|
func SetDefaults(a, b any) {
|
|
pt := reflect.TypeOf(a)
|
|
t := pt.Elem()
|
|
va := reflect.ValueOf(a).Elem()
|
|
vb := reflect.ValueOf(b).Elem()
|
|
for i := range t.NumField() {
|
|
aField := va.Field(i)
|
|
// Set a from b if it is public
|
|
if aField.CanSet() {
|
|
bField := vb.Field(i)
|
|
aField.Set(bField)
|
|
}
|
|
}
|
|
}
|