Method optout

cmd/errtrace/main.go:1030–1037

optout reports whether the line at the given position is opted out of tracing, incrementing uses if so.

(pos token.Pos)

// optout reports whether the line at the given position
// is opted out of tracing, incrementing uses if so.
func (t *walker) optout(pos token.Pos) bool {
	line := t.fset.Position(pos).Line
	_, ok := t.optouts[line]
	if ok {
		t.optouts[line]++
	}
	return ok
}

// insert is a request to add something to the source code.
type insert interface {