func DeleteUnusedLabels(ctxt *grinder.Context, pkg *grinder.Package) {
grinder.GrindFuncDecls(ctxt, pkg, func(ctxt *grinder.Context, pkg *grinder.Package, edit *grinder.EditBuffer, fn *ast.FuncDecl) {
if fn.Body == nil {
return
}
blocks := block.Build(pkg.FileSet, fn.Body)
ast.Inspect(fn.Body, func(x ast.Node) bool {
switch x := x.(type) {
case *ast.LabeledStmt:
if len(blocks.Goto[x.Label.Name])+len(blocks.Break[x.Label.Name])+len(blocks.Continue[x.Label.Name]) == 0 {
edit.DeleteLine(x.Pos(), x.Colon+1)
}
case ast.Expr:
return false
}
return true
})
})
}
func Grind(ctxt *grinder.Context, pkg *grinder.Package) {
grinder.GrindFuncDecls(ctxt, pkg, grindFunc)
}