/
nodefer.go
77 lines (61 loc) · 1.62 KB
/
nodefer.go
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package linters
import (
"go/ast"
"slices"
"strings"
"github.com/mirecl/golimiter/analysis"
"github.com/mirecl/golimiter/config"
"golang.org/x/tools/go/ast/inspector"
"golang.org/x/tools/go/packages"
)
const (
messageNoDefer = "a `defer` statement forbidden to use"
)
// NewNoDefer create instance linter for check defer.
func NewNoDefer() *analysis.Linter {
return &analysis.Linter{
Name: "NoDefer",
Run: func(cfg *config.Config, pkgs []*packages.Package) []analysis.Issue {
issues := make([]analysis.Issue, 0)
if cfg.NoDefer.Disable {
return issues
}
for _, pkg := range pkgs {
pkgIssues := runNoDefer(&cfg.NoDefer, pkg)
issues = append(issues, pkgIssues...)
}
return issues
},
}
}
// TODO: check defer in func with name.
func runNoDefer(cfg *config.DefaultLinter, pkg *packages.Package) []analysis.Issue {
nodeFilter := []ast.Node{(*ast.DeferStmt)(nil)}
inspect := inspector.New(pkg.Syntax)
var pkgIssues []analysis.Issue
inspect.Preorder(nodeFilter, func(node ast.Node) {
position := pkg.Fset.Position(node.Pos())
currentFile := analysis.GetPathRelative(position.Filename)
if slices.Contains(cfg.ExcludeFiles, currentFile) {
return
}
for _, folder := range cfg.ExcludeFolders {
if strings.HasPrefix(currentFile, folder) {
return
}
}
hash := analysis.GetHashFromBody(pkg.Fset, node)
if cfg.IsVerifyHash(hash) {
return
}
pkgIssues = append(pkgIssues, analysis.Issue{
Message: messageNoDefer,
Line: position.Line,
Filename: position.Filename,
Hash: hash,
Severity: cfg.Severity,
Type: cfg.Type,
})
})
return pkgIssues
}