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

     1  package golinters
     2  
     3  import (
     4  	"context"
     5  	"fmt"
     6  	"sort"
     7  
     8  	gocycloAPI "github.com/golangci/gocyclo/pkg/gocyclo"
     9  	"github.com/golangci/golangci-lint/pkg/lint/linter"
    10  	"github.com/golangci/golangci-lint/pkg/result"
    11  )
    12  
    13  type Gocyclo struct{}
    14  
    15  func (Gocyclo) Name() string {
    16  	return "gocyclo"
    17  }
    18  
    19  func (Gocyclo) Desc() string {
    20  	return "Computes and checks the cyclomatic complexity of functions"
    21  }
    22  
    23  func (g Gocyclo) Run(ctx context.Context, lintCtx *linter.Context) ([]result.Issue, error) {
    24  	var stats []gocycloAPI.Stat
    25  	for _, f := range lintCtx.ASTCache.GetAllValidFiles() {
    26  		stats = gocycloAPI.BuildStats(f.F, f.Fset, stats)
    27  	}
    28  	if len(stats) == 0 {
    29  		return nil, nil
    30  	}
    31  
    32  	sort.Slice(stats, func(i, j int) bool {
    33  		return stats[i].Complexity > stats[j].Complexity
    34  	})
    35  
    36  	res := make([]result.Issue, 0, len(stats))
    37  	for _, s := range stats {
    38  		if s.Complexity <= lintCtx.Settings().Gocyclo.MinComplexity {
    39  			break //Break as the stats is already sorted from greatest to least
    40  		}
    41  
    42  		res = append(res, result.Issue{
    43  			Pos: s.Pos,
    44  			Text: fmt.Sprintf("cyclomatic complexity %d of func %s is high (> %d)",
    45  				s.Complexity, formatCode(s.FuncName, lintCtx.Cfg), lintCtx.Settings().Gocyclo.MinComplexity),
    46  			FromLinter: g.Name(),
    47  		})
    48  	}
    49  
    50  	return res, nil
    51  }