forked from golangci/golangci-lint
/
unconvert.go
67 lines (53 loc) · 1.45 KB
/
unconvert.go
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package golinters
import (
"sync"
unconvertAPI "github.com/golangci/unconvert"
"golang.org/x/tools/go/analysis"
"github.com/lycug/golangci-lint/pkg/golinters/goanalysis"
"github.com/lycug/golangci-lint/pkg/lint/linter"
"github.com/lycug/golangci-lint/pkg/result"
)
const unconvertName = "unconvert"
//nolint:dupl
func NewUnconvert() *goanalysis.Linter {
var mu sync.Mutex
var resIssues []goanalysis.Issue
analyzer := &analysis.Analyzer{
Name: unconvertName,
Doc: goanalysis.TheOnlyanalyzerDoc,
Run: func(pass *analysis.Pass) (interface{}, error) {
issues := runUnconvert(pass)
if len(issues) == 0 {
return nil, nil
}
mu.Lock()
resIssues = append(resIssues, issues...)
mu.Unlock()
return nil, nil
},
}
return goanalysis.NewLinter(
unconvertName,
"Remove unnecessary type conversions",
[]*analysis.Analyzer{analyzer},
nil,
).WithIssuesReporter(func(*linter.Context) []goanalysis.Issue {
return resIssues
}).WithLoadMode(goanalysis.LoadModeTypesInfo)
}
func runUnconvert(pass *analysis.Pass) []goanalysis.Issue {
prog := goanalysis.MakeFakeLoaderProgram(pass)
positions := unconvertAPI.Run(prog)
if len(positions) == 0 {
return nil
}
issues := make([]goanalysis.Issue, 0, len(positions))
for _, pos := range positions {
issues = append(issues, goanalysis.NewIssue(&result.Issue{
Pos: pos,
Text: "unnecessary conversion",
FromLinter: unconvertName,
}, pass))
}
return issues
}