Support Go 1.20 Unwrap() []error #69
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Go 1.20 includes native support for wrapping multiple errors.
Errors which wrap multiple other errors must implement,
Unwrap() []error
If an error implements this method, `errors.Is` and `errors.As`
will descend into the list and continue matching.
Versions of Go prior to 1.20, however, still need the old
`Is` and `As` method implementations on the error object
to get a similar behavior.
This change adds the `Unwrap() []error` method
gated by a build constraint requiring Go 1.20 or higher.
It similarly moves the existing `Is` and `As` methods
to a file that is ignored on Go 1.20 or higher.
Once Go 1.21 is released and 1.19 is no longer supported,
the pre-go1.20 file may be deleted and the build constraints removed.
For details, see also the section,
"How should existing multierror types adopt the new interface?"
of the [multiple errors proposal][1].
[1]: golang/go#53435
Codecov Report
@@ Coverage Diff @@
## master #69 +/- ##
=========================================
Coverage 100.00% 100.00%
=========================================
Files 1 3 +2
Lines 109 110 +1
=========================================
+ Hits 109 110 +1
📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more |
r-hang
approved these changes
Feb 10, 2023
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Go 1.20 includes native support for wrapping multiple errors.
Errors which wrap multiple other errors must implement,
If an error implements this method,
errors.Isanderrors.Aswill descend into the list and continue matching.
Versions of Go prior to 1.20, however, still need the old
IsandAsmethod implementations on the error objectto get a similar behavior.
This change adds the
Unwrap() []errormethodgated by a build constraint requiring Go 1.20 or higher.
It similarly moves the existing
IsandAsmethodsto a file that is ignored on Go 1.20 or higher.
Once Go 1.21 is released and 1.19 is no longer supported,
the pre-go1.20 file may be deleted and the build constraints removed.
For details, see also the section,
"How should existing multierror types adopt the new interface?"
of the multiple errors proposal.
Refs #64