98 lines
2.4 KiB
Go
98 lines
2.4 KiB
Go
package golinters
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import (
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"fmt"
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"sync"
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goconstAPI "github.com/jgautheron/goconst"
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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 goconstName = "goconst"
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//nolint:dupl
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func NewGoconst(settings *config.GoConstSettings) *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: goconstName,
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Doc: goanalysis.TheOnlyanalyzerDoc,
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Run: func(pass *analysis.Pass) (interface{}, error) {
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issues, err := runGoconst(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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}
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return goanalysis.NewLinter(
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goconstName,
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"Finds repeated strings that could be replaced by a constant",
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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 runGoconst(pass *analysis.Pass, settings *config.GoConstSettings) ([]goanalysis.Issue, error) {
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cfg := goconstAPI.Config{
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IgnoreTests: settings.IgnoreTests,
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MatchWithConstants: settings.MatchWithConstants,
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MinStringLength: settings.MinStringLen,
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MinOccurrences: settings.MinOccurrencesCount,
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ParseNumbers: settings.ParseNumbers,
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NumberMin: settings.NumberMin,
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NumberMax: settings.NumberMax,
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ExcludeTypes: map[goconstAPI.Type]bool{},
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}
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if settings.IgnoreCalls {
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cfg.ExcludeTypes[goconstAPI.Call] = true
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}
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lintIssues, err := goconstAPI.Run(pass.Files, pass.Fset, &cfg)
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if err != nil {
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return nil, err
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}
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if len(lintIssues) == 0 {
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return nil, nil
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}
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res := make([]goanalysis.Issue, 0, len(lintIssues))
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for _, i := range lintIssues {
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text := fmt.Sprintf("string %s has %d occurrences", formatCode(i.Str, nil), i.OccurrencesCount)
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if i.MatchingConst == "" {
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text += ", make it a constant"
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} else {
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text += fmt.Sprintf(", but such constant %s already exists", formatCode(i.MatchingConst, nil))
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}
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res = append(res, goanalysis.NewIssue(&result.Issue{
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Pos: i.Pos,
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Text: text,
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FromLinter: goconstName,
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}, pass))
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}
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return res, nil
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}
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