85 lines
2.0 KiB
Go
85 lines
2.0 KiB
Go
package golinters
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import (
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"sync"
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gofmtAPI "github.com/golangci/gofmt/gofmt"
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"github.com/pkg/errors"
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"golang.org/x/tools/go/analysis"
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"github.com/golangci/golangci-lint/pkg/config"
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"github.com/golangci/golangci-lint/pkg/golinters/goanalysis"
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"github.com/golangci/golangci-lint/pkg/lint/linter"
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)
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const gofmtName = "gofmt"
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func NewGofmt(settings *config.GoFmtSettings) *goanalysis.Linter {
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var mu sync.Mutex
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var resIssues []goanalysis.Issue
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analyzer := &analysis.Analyzer{
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Name: gofmtName,
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Doc: goanalysis.TheOnlyanalyzerDoc,
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Run: goanalysis.DummyRun,
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}
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return goanalysis.NewLinter(
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gofmtName,
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"Gofmt checks whether code was gofmt-ed. By default "+
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"this tool runs with -s option to check for code simplification",
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[]*analysis.Analyzer{analyzer},
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nil,
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).WithContextSetter(func(lintCtx *linter.Context) {
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analyzer.Run = func(pass *analysis.Pass) (interface{}, error) {
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issues, err := runGofmt(lintCtx, pass, settings)
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if err != nil {
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return nil, err
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}
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if len(issues) == 0 {
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return nil, nil
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}
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mu.Lock()
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resIssues = append(resIssues, issues...)
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mu.Unlock()
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return nil, nil
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}
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}).WithIssuesReporter(func(*linter.Context) []goanalysis.Issue {
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return resIssues
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}).WithLoadMode(goanalysis.LoadModeSyntax)
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}
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func runGofmt(lintCtx *linter.Context, pass *analysis.Pass, settings *config.GoFmtSettings) ([]goanalysis.Issue, error) {
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var fileNames []string
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for _, f := range pass.Files {
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pos := pass.Fset.PositionFor(f.Pos(), false)
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fileNames = append(fileNames, pos.Filename)
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}
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var issues []goanalysis.Issue
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for _, f := range fileNames {
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diff, err := gofmtAPI.Run(f, settings.Simplify)
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if err != nil { // TODO: skip
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return nil, err
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}
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if diff == nil {
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continue
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}
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is, err := extractIssuesFromPatch(string(diff), lintCtx, gofmtName)
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if err != nil {
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return nil, errors.Wrapf(err, "can't extract issues from gofmt diff output %q", string(diff))
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}
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for i := range is {
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issues = append(issues, goanalysis.NewIssue(&is[i], pass))
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}
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}
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return issues, nil
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}
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