github.com/vanstinator/golangci-lint@v0.0.0-20240223191551-cc572f00d9d1/pkg/golinters/importas.go (about)

     1  package golinters
     2  
     3  import (
     4  	"fmt"
     5  	"strconv"
     6  	"strings"
     7  
     8  	"github.com/julz/importas" //nolint:misspell
     9  	"golang.org/x/tools/go/analysis"
    10  
    11  	"github.com/vanstinator/golangci-lint/pkg/config"
    12  	"github.com/vanstinator/golangci-lint/pkg/golinters/goanalysis"
    13  	"github.com/vanstinator/golangci-lint/pkg/lint/linter"
    14  )
    15  
    16  func NewImportAs(settings *config.ImportAsSettings) *goanalysis.Linter {
    17  	analyzer := importas.Analyzer
    18  
    19  	return goanalysis.NewLinter(
    20  		analyzer.Name,
    21  		analyzer.Doc,
    22  		[]*analysis.Analyzer{analyzer},
    23  		nil,
    24  	).WithContextSetter(func(lintCtx *linter.Context) {
    25  		if settings == nil {
    26  			return
    27  		}
    28  		if len(settings.Alias) == 0 {
    29  			lintCtx.Log.Infof("importas settings found, but no aliases listed. List aliases under alias: key.") //nolint:misspell
    30  		}
    31  
    32  		if err := analyzer.Flags.Set("no-unaliased", strconv.FormatBool(settings.NoUnaliased)); err != nil {
    33  			lintCtx.Log.Errorf("failed to parse configuration: %v", err)
    34  		}
    35  
    36  		if err := analyzer.Flags.Set("no-extra-aliases", strconv.FormatBool(settings.NoExtraAliases)); err != nil {
    37  			lintCtx.Log.Errorf("failed to parse configuration: %v", err)
    38  		}
    39  
    40  		uniqPackages := make(map[string]config.ImportAsAlias)
    41  		uniqAliases := make(map[string]config.ImportAsAlias)
    42  		for _, a := range settings.Alias {
    43  			if a.Pkg == "" {
    44  				lintCtx.Log.Errorf("invalid configuration, empty package: pkg=%s alias=%s", a.Pkg, a.Alias)
    45  				continue
    46  			}
    47  
    48  			if v, ok := uniqPackages[a.Pkg]; ok {
    49  				lintCtx.Log.Errorf("invalid configuration, multiple aliases for the same package: pkg=%s aliases=[%s,%s]", a.Pkg, a.Alias, v.Alias)
    50  			} else {
    51  				uniqPackages[a.Pkg] = a
    52  			}
    53  
    54  			// skip the duplication check when the alias is a regular expression replacement pattern (ie. contains `$`).
    55  			if v, ok := uniqAliases[a.Alias]; ok && !strings.Contains(a.Alias, "$") {
    56  				lintCtx.Log.Errorf("invalid configuration, multiple packages with the same alias: alias=%s packages=[%s,%s]", a.Alias, a.Pkg, v.Pkg)
    57  			} else {
    58  				uniqAliases[a.Alias] = a
    59  			}
    60  
    61  			err := analyzer.Flags.Set("alias", fmt.Sprintf("%s:%s", a.Pkg, a.Alias))
    62  			if err != nil {
    63  				lintCtx.Log.Errorf("failed to parse configuration: %v", err)
    64  			}
    65  		}
    66  	}).WithLoadMode(goanalysis.LoadModeTypesInfo)
    67  }