func (l *line) childOf(parent element) (bool, error) {
	var ok bool
	var err error

	switch {
	case l.isEmpty():
		ok = true
	case parent.ContainPlainText():
		switch {
		case parent.Base().ln.indent < l.indent:
			ok = true
		}
	default:
		switch {
		case l.indent == parent.Base().ln.indent+1:
			ok = true
		case l.indent > parent.Base().ln.indent+1:
			err = fmt.Errorf("the indent is invalid [file: %s][line: %d]", l.fileName(), l.no)
		}
	}

	return ok, err
}
func (l *line) childOf(parent element) (bool, error) {
	var ok bool
	var err error

	switch {
	case l.isEmpty():
		ok = true
	case parent.ContainPlainText():
		switch {
		case parent.Base().ln.indent < l.indent:
			ok = true
		}
	default:
		switch {
		case l.indent == parent.Base().ln.indent+1:
			ok = true
		case l.indent > parent.Base().ln.indent+1:
			err = fmt.Errorf("the indent is invalid [file: %s][line: %d]", l.fileName(), l.no)
		}
	}

	return ok, err
}
func ( l * line ) childOf ( parent element ) ( bool , error ) { var ok bool var err error switch { case l . isEmpty ( ) : ok = true case parent . ContainPlainText ( ) : switch { case parent . Base ( ) . ln . indent < l . indent : ok = true } default : switch { case l . indent == parent . Base ( ) . ln . indent + 1 : ok = true case l . indent > parent . Base ( ) . ln . indent + 1 : err = fmt . Errorf ( " " , l . fileName ( ) , l . no ) } } return ok , err }
// childOf returns true if the line is a child of the element.
childOf returns true if the line is a child of the element .