jgaunt/rclone
1
0
Fork 0
mirror of https://github.com/rclone/rclone.git synced 2025-12-15 15:53:41 +00:00
Code Issues Projects Releases Wiki Activity

lib/errors: add support for unwrapping go1.20 multi errors

Browse Source
This commit is contained in:
Nick Craig-Wood
2023-01-17 10:35:02 +00:00
parent ca9182d6ae
commit 844e8fb8bd
2 changed files with 215 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
lib/errors/errors.go
View File

@@ -17,8 +17,10 @@ type WalkFunc func(error) bool
// The next error in the chain is determined by the following rules:
//
// the return value of this method is used.
// - If the current error has a `Unwrap() error` method (golang.org/x/xerrors),
// - If the current error has a `Unwrap() error` method
// the return value of this method is used.
// - If the current error has a `Unwrap() []error` method
// the return values of this method is used.
// - Common errors in the Go runtime that contain an Err field will use this value.
func Walk(err error, f WalkFunc) {
for prev := err; err != nil; prev = err {
@@ -27,6 +29,11 @@ func Walk(err error, f WalkFunc) {
}
switch e := err.(type) {
case multiWrapper:
for _, err = range e.Unwrap() {
Walk(err, f)
}
return
case causer:
err = e.Cause()
case wrapper:
@@ -62,3 +69,6 @@ type causer interface {
type wrapper interface {
Unwrap() error
}
type multiWrapper interface {
Unwrap() []error
}