73 lines
1.7 KiB
Go
73 lines
1.7 KiB
Go
package golinters
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import (
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"fmt"
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"sync"
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varcheckAPI "github.com/golangci/check/cmd/varcheck"
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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 varcheckName = "varcheck"
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func NewVarcheck(settings *config.VarCheckSettings) *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: varcheckName,
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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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varcheckName,
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"Finds unused global variables and constants",
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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 := runVarCheck(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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}).WithIssuesReporter(func(*linter.Context) []goanalysis.Issue {
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return resIssues
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}).WithLoadMode(goanalysis.LoadModeTypesInfo)
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}
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//nolint:dupl
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func runVarCheck(pass *analysis.Pass, settings *config.VarCheckSettings) []goanalysis.Issue {
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prog := goanalysis.MakeFakeLoaderProgram(pass)
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lintIssues := varcheckAPI.Run(prog, settings.CheckExportedFields)
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if len(lintIssues) == 0 {
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return nil
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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: fmt.Sprintf("%s is unused", formatCode(i.VarName, nil)),
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FromLinter: varcheckName,
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}, pass))
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}
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return issues
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}
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