2024-03-26 20:55:39 +01:00

81 lines
2.0 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/goanalysis"
"github.com/golangci/golangci-lint/pkg/golinters/internal"
"github.com/golangci/golangci-lint/pkg/lint/linter"
"github.com/golangci/golangci-lint/pkg/result"
)
const gocognitName = "gocognit"
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, internal.FormatCode(s.FuncName, nil), settings.MinComplexity),
FromLinter: gocognitName,
}, pass))
}
return issues
}