forked from golangci/golangci-lint
/
interfacer.go
82 lines (66 loc) · 1.81 KB
/
interfacer.go
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package golinters
import (
"sync"
"golang.org/x/tools/go/analysis"
"golang.org/x/tools/go/analysis/passes/buildssa"
"mvdan.cc/interfacer/check"
"github.com/chenfeining/golangci-lint/pkg/golinters/goanalysis"
"github.com/chenfeining/golangci-lint/pkg/lint/linter"
"github.com/chenfeining/golangci-lint/pkg/result"
)
const interfacerName = "interfacer"
func NewInterfacer() *goanalysis.Linter {
var mu sync.Mutex
var resIssues []goanalysis.Issue
analyzer := &analysis.Analyzer{
Name: interfacerName,
Doc: goanalysis.TheOnlyanalyzerDoc,
Requires: []*analysis.Analyzer{buildssa.Analyzer},
Run: func(pass *analysis.Pass) (any, error) {
issues, err := runInterfacer(pass)
if err != nil {
return nil, err
}
if len(issues) == 0 {
return nil, nil
}
mu.Lock()
resIssues = append(resIssues, issues...)
mu.Unlock()
return nil, nil
},
}
return goanalysis.NewLinter(
interfacerName,
"Linter that suggests narrower interface types",
[]*analysis.Analyzer{analyzer},
nil,
).WithIssuesReporter(func(*linter.Context) []goanalysis.Issue {
return resIssues
}).WithLoadMode(goanalysis.LoadModeTypesInfo)
}
func runInterfacer(pass *analysis.Pass) ([]goanalysis.Issue, error) {
c := &check.Checker{}
prog := goanalysis.MakeFakeLoaderProgram(pass)
c.Program(prog)
ssa := pass.ResultOf[buildssa.Analyzer].(*buildssa.SSA)
ssaPkg := ssa.Pkg
c.ProgramSSA(ssaPkg.Prog)
lintIssues, err := c.Check()
if err != nil {
return nil, err
}
if len(lintIssues) == 0 {
return nil, nil
}
issues := make([]goanalysis.Issue, 0, len(lintIssues))
for _, i := range lintIssues {
pos := pass.Fset.Position(i.Pos())
issues = append(issues, goanalysis.NewIssue(&result.Issue{
Pos: pos,
Text: i.Message(),
FromLinter: interfacerName,
}, pass))
}
return issues, nil
}