77 lines
1.8 KiB
Go
77 lines
1.8 KiB
Go
package golinters
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import (
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"fmt"
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"sync"
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"github.com/fzipp/gocyclo"
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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 gocycloName = "gocyclo"
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//nolint:dupl
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func NewGocyclo(settings *config.GoCycloSettings) *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: gocycloName,
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Doc: goanalysis.TheOnlyanalyzerDoc,
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Run: func(pass *analysis.Pass) (any, error) {
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issues := runGoCyclo(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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gocycloName,
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"Computes and checks the cyclomatic complexity of functions",
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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 runGoCyclo(pass *analysis.Pass, settings *config.GoCycloSettings) []goanalysis.Issue {
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var stats gocyclo.Stats
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for _, f := range pass.Files {
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stats = gocyclo.AnalyzeASTFile(f, pass.Fset, stats)
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}
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if len(stats) == 0 {
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return nil
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}
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stats = stats.SortAndFilter(-1, settings.MinComplexity)
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issues := make([]goanalysis.Issue, 0, len(stats))
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for _, s := range stats {
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text := fmt.Sprintf("cyclomatic complexity %d of func %s is high (> %d)",
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s.Complexity, formatCode(s.FuncName, nil), settings.MinComplexity)
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issues = append(issues, goanalysis.NewIssue(&result.Issue{
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Pos: s.Pos,
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Text: text,
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FromLinter: gocycloName,
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}, pass))
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}
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return issues
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}
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