Isaev Denis 95ec0cf21e
dramatically reduce memory usage (#758)
Run all linters per package. It allows unloading package data when it's
processed. It dramatically reduces memory (and CPU because of GC) usage.

Relates: #337
2019-09-30 16:19:41 +03:00

53 lines
1.3 KiB
Go

package golinters
import (
"fmt"
"sync"
deadcodeAPI "github.com/golangci/go-misc/deadcode"
"golang.org/x/tools/go/analysis"
"github.com/golangci/golangci-lint/pkg/golinters/goanalysis"
"github.com/golangci/golangci-lint/pkg/lint/linter"
"github.com/golangci/golangci-lint/pkg/result"
)
func NewDeadcode() *goanalysis.Linter {
const linterName = "deadcode"
var mu sync.Mutex
var resIssues []result.Issue
analyzer := &analysis.Analyzer{
Name: goanalysis.TheOnlyAnalyzerName,
Doc: goanalysis.TheOnlyanalyzerDoc,
Run: func(pass *analysis.Pass) (interface{}, error) {
prog := goanalysis.MakeFakeLoaderProgram(pass)
issues, err := deadcodeAPI.Run(prog)
if err != nil {
return nil, err
}
res := make([]result.Issue, 0, len(issues))
for _, i := range issues {
res = append(res, result.Issue{
Pos: i.Pos,
Text: fmt.Sprintf("%s is unused", formatCode(i.UnusedIdentName, nil)),
FromLinter: linterName,
})
}
mu.Lock()
resIssues = append(resIssues, res...)
mu.Unlock()
return nil, nil
},
}
return goanalysis.NewLinter(
linterName,
"Finds unused code",
[]*analysis.Analyzer{analyzer},
nil,
).WithIssuesReporter(func(*linter.Context) []result.Issue {
return resIssues
}).WithLoadMode(goanalysis.LoadModeTypesInfo)
}