81 lines
1.9 KiB
Go
81 lines
1.9 KiB
Go
package golinters
|
|
|
|
import (
|
|
"fmt"
|
|
"sort"
|
|
"sync"
|
|
|
|
"github.com/uudashr/gocognit"
|
|
"golang.org/x/tools/go/analysis"
|
|
|
|
"github.com/golangci/golangci-lint/pkg/config"
|
|
"github.com/golangci/golangci-lint/pkg/golinters/goanalysis"
|
|
"github.com/golangci/golangci-lint/pkg/lint/linter"
|
|
"github.com/golangci/golangci-lint/pkg/result"
|
|
)
|
|
|
|
const gocognitName = "gocognit"
|
|
|
|
//nolint:dupl
|
|
func NewGocognit(settings *config.GocognitSettings) *goanalysis.Linter {
|
|
var mu sync.Mutex
|
|
var resIssues []goanalysis.Issue
|
|
|
|
analyzer := &analysis.Analyzer{
|
|
Name: goanalysis.TheOnlyAnalyzerName,
|
|
Doc: goanalysis.TheOnlyanalyzerDoc,
|
|
Run: func(pass *analysis.Pass) (any, error) {
|
|
issues := runGocognit(pass, settings)
|
|
|
|
if len(issues) == 0 {
|
|
return nil, nil
|
|
}
|
|
|
|
mu.Lock()
|
|
resIssues = append(resIssues, issues...)
|
|
mu.Unlock()
|
|
|
|
return nil, nil
|
|
},
|
|
}
|
|
|
|
return goanalysis.NewLinter(
|
|
gocognitName,
|
|
"Computes and checks the cognitive complexity of functions",
|
|
[]*analysis.Analyzer{analyzer},
|
|
nil,
|
|
).WithIssuesReporter(func(*linter.Context) []goanalysis.Issue {
|
|
return resIssues
|
|
}).WithLoadMode(goanalysis.LoadModeSyntax)
|
|
}
|
|
|
|
func runGocognit(pass *analysis.Pass, settings *config.GocognitSettings) []goanalysis.Issue {
|
|
var stats []gocognit.Stat
|
|
for _, f := range pass.Files {
|
|
stats = gocognit.ComplexityStats(f, pass.Fset, stats)
|
|
}
|
|
if len(stats) == 0 {
|
|
return nil
|
|
}
|
|
|
|
sort.SliceStable(stats, func(i, j int) bool {
|
|
return stats[i].Complexity > stats[j].Complexity
|
|
})
|
|
|
|
issues := make([]goanalysis.Issue, 0, len(stats))
|
|
for _, s := range stats {
|
|
if s.Complexity <= settings.MinComplexity {
|
|
break // Break as the stats is already sorted from greatest to least
|
|
}
|
|
|
|
issues = append(issues, goanalysis.NewIssue(&result.Issue{
|
|
Pos: s.Pos,
|
|
Text: fmt.Sprintf("cognitive complexity %d of func %s is high (> %d)",
|
|
s.Complexity, formatCode(s.FuncName, nil), settings.MinComplexity),
|
|
FromLinter: gocognitName,
|
|
}, pass))
|
|
}
|
|
|
|
return issues
|
|
}
|