Linter for errors.Is and errors.As

Related tags

Error Handling erris
Overview

erris

erris is a program for checking that errors are compared or type asserted using go1.13 errors.Is and errors.As functions.

Build Status Report

Install

go get -u github.com/romanyx/erris/cmd/erris

Use

For basic usage, just give the package path of interest as the first argument:

erris github.com/romanyx/erris/testdata

Outputs:

github.com/romanyx/erris/testdata/main.go:14:5:	use errors.Is to compare an error
github.com/romanyx/erris/testdata/main_test.go:11:14:	use errors.As to type assert an error

To check all packages beneath the current directory:

erris ./...
Issues
  • repackage as analysis.Analyzer

    repackage as analysis.Analyzer

    To better allow for metalinters and toolchains to integrate with erris, this change exposes an golang.org/x/tools/go/analysis.Analyzer and reorganises things to this end.

    github.com/romanyx/erris/internal/checker has been mostly replaced with logic from golang.org/x/tools/go/analysis. This traditionally lives at the root, and cannot be put under an internal repo, thus has been moved to the root. The remaining vestages live on as erris.run, which reports instead of returns the errors to the analysis.Pass.

    The ignoretests flag is, imo, incompatible with the analysis tooling, thus has been retained, but deprecated, and is now a noop. It can be removed when appropriate.

    github.com/romanyx/erris/internal/visitor has been updated to talk about analysis.Pass not packages.Package. This change was seamless because the only portions of Package that were used are also in Pass.

    Because the root now contains the exposed library interface, the main package has been moved to the canonical cmd directory: github.com/romanyx/erris/cmd/erris. This is a breaking change, thus the documentation has been updated.

    enhancement 
    opened by arnottcr 2
Owner
Roman Budnikov
Gopher. Twitter: @romanyx0
Roman Budnikov
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