github.com/trigonella/golangci-lint@v1.10.1/pkg/golinters/errcheck.go (about)

     1  package golinters
     2  
     3  import (
     4  	"context"
     5  	"fmt"
     6  
     7  	"github.com/golangci/golangci-lint/pkg/lint/linter"
     8  	"github.com/golangci/golangci-lint/pkg/result"
     9  	errcheckAPI "github.com/kisielk/errcheck/golangci"
    10  )
    11  
    12  type Errcheck struct{}
    13  
    14  func (Errcheck) Name() string {
    15  	return "errcheck"
    16  }
    17  
    18  func (Errcheck) Desc() string {
    19  	return "Errcheck is a program for checking for unchecked errors " +
    20  		"in go programs. These unchecked errors can be critical bugs in some cases"
    21  }
    22  
    23  func (e Errcheck) Run(ctx context.Context, lintCtx *linter.Context) ([]result.Issue, error) {
    24  	errCfg := &lintCtx.Settings().Errcheck
    25  	issues, err := errcheckAPI.Run(lintCtx.Program, errCfg.CheckAssignToBlank, errCfg.CheckTypeAssertions)
    26  	if err != nil {
    27  		return nil, err
    28  	}
    29  
    30  	if len(issues) == 0 {
    31  		return nil, nil
    32  	}
    33  
    34  	res := make([]result.Issue, 0, len(issues))
    35  	for _, i := range issues {
    36  		var text string
    37  		if i.FuncName != "" {
    38  			text = fmt.Sprintf("Error return value of %s is not checked", formatCode(i.FuncName, lintCtx.Cfg))
    39  		} else {
    40  			text = "Error return value is not checked"
    41  		}
    42  		res = append(res, result.Issue{
    43  			FromLinter: e.Name(),
    44  			Text:       text,
    45  			Pos:        i.Pos,
    46  		})
    47  	}
    48  
    49  	return res, nil
    50  }