github.com/nozzle/golangci-lint@v1.49.0-nz3/pkg/golinters/makezero.go (about)

     1  package golinters
     2  
     3  import (
     4  	"sync"
     5  
     6  	"github.com/ashanbrown/makezero/makezero"
     7  	"github.com/pkg/errors"
     8  	"golang.org/x/tools/go/analysis"
     9  
    10  	"github.com/golangci/golangci-lint/pkg/config"
    11  	"github.com/golangci/golangci-lint/pkg/golinters/goanalysis"
    12  	"github.com/golangci/golangci-lint/pkg/lint/linter"
    13  	"github.com/golangci/golangci-lint/pkg/result"
    14  )
    15  
    16  const makezeroName = "makezero"
    17  
    18  //nolint:dupl
    19  func NewMakezero(settings *config.MakezeroSettings) *goanalysis.Linter {
    20  	var mu sync.Mutex
    21  	var resIssues []goanalysis.Issue
    22  
    23  	analyzer := &analysis.Analyzer{
    24  		Name: makezeroName,
    25  		Doc:  goanalysis.TheOnlyanalyzerDoc,
    26  		Run: func(pass *analysis.Pass) (interface{}, error) {
    27  			issues, err := runMakeZero(pass, settings)
    28  			if err != nil {
    29  				return nil, err
    30  			}
    31  
    32  			if len(issues) == 0 {
    33  				return nil, nil
    34  			}
    35  
    36  			mu.Lock()
    37  			resIssues = append(resIssues, issues...)
    38  			mu.Unlock()
    39  
    40  			return nil, nil
    41  		},
    42  	}
    43  
    44  	return goanalysis.NewLinter(
    45  		makezeroName,
    46  		"Finds slice declarations with non-zero initial length",
    47  		[]*analysis.Analyzer{analyzer},
    48  		nil,
    49  	).WithIssuesReporter(func(*linter.Context) []goanalysis.Issue {
    50  		return resIssues
    51  	}).WithLoadMode(goanalysis.LoadModeTypesInfo)
    52  }
    53  
    54  func runMakeZero(pass *analysis.Pass, settings *config.MakezeroSettings) ([]goanalysis.Issue, error) {
    55  	zero := makezero.NewLinter(settings.Always)
    56  
    57  	var issues []goanalysis.Issue
    58  
    59  	for _, file := range pass.Files {
    60  		hints, err := zero.Run(pass.Fset, pass.TypesInfo, file)
    61  		if err != nil {
    62  			return nil, errors.Wrapf(err, "makezero linter failed on file %q", file.Name.String())
    63  		}
    64  
    65  		for _, hint := range hints {
    66  			issues = append(issues, goanalysis.NewIssue(&result.Issue{
    67  				Pos:        hint.Position(),
    68  				Text:       hint.Details(),
    69  				FromLinter: makezeroName,
    70  			}, pass))
    71  		}
    72  	}
    73  
    74  	return issues, nil
    75  }