80 lines
1.8 KiB
Go
80 lines
1.8 KiB
Go
package golinters
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import (
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"sort"
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"sync"
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"github.com/nakabonne/nestif"
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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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"github.com/golangci/golangci-lint/pkg/result"
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)
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const nestifName = "nestif"
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//nolint:dupl
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func NewNestif(settings *config.NestifSettings) *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: goanalysis.TheOnlyAnalyzerName,
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Doc: goanalysis.TheOnlyanalyzerDoc,
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Run: func(pass *analysis.Pass) (interface{}, error) {
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issues := runNestIf(pass, settings)
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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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}
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return goanalysis.NewLinter(
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nestifName,
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"Reports deeply nested if statements",
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[]*analysis.Analyzer{analyzer},
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nil,
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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 runNestIf(pass *analysis.Pass, settings *config.NestifSettings) []goanalysis.Issue {
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checker := &nestif.Checker{
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MinComplexity: settings.MinComplexity,
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}
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var lintIssues []nestif.Issue
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for _, f := range pass.Files {
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lintIssues = append(lintIssues, checker.Check(f, pass.Fset)...)
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}
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if len(lintIssues) == 0 {
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return nil
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}
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sort.SliceStable(lintIssues, func(i, j int) bool {
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return lintIssues[i].Complexity > lintIssues[j].Complexity
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})
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issues := make([]goanalysis.Issue, 0, len(lintIssues))
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for _, i := range lintIssues {
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issues = append(issues, goanalysis.NewIssue(&result.Issue{
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Pos: i.Pos,
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Text: i.Message,
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FromLinter: nestifName,
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}, pass))
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}
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return issues
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}
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