1<?php 2/** 3 * Interface declaration for php css ast visitors 4 * 5 * @license http://www.opensource.org/licenses/mit-license.php The MIT License 6 * @copyright Copyright 2010-2014 PhpCss Team 7 */ 8 9namespace PhpCss\Ast { 10 11 use PhpCss; 12 13 /** 14 * Interface declaration for php css ast visitors 15 */ 16 interface Visitor { 17 18 /** 19 * Visit an ast object 20 * 21 * @param Node $astNode 22 */ 23 public function visit(Node $astNode): void; 24 25 /** 26 * Visit an ast object 27 * 28 * @param Node $astNode 29 * @return bool 30 */ 31 public function visitEnter(Node $astNode): bool; 32 33 /** 34 * Visit an ast object 35 * 36 * @param Node $astNode 37 */ 38 public function visitLeave(Node $astNode): void; 39 } 40} 41