1<?php 2 3/** 4 * Hoa 5 * 6 * 7 * @license 8 * 9 * New BSD License 10 * 11 * Copyright © 2007-2017, Hoa community. All rights reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions are met: 15 * * Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * * Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * * Neither the name of the Hoa nor the names of its contributors may be 21 * used to endorse or promote products derived from this software without 22 * specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE 28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 34 * POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37namespace Hoa\Compiler\Visitor; 38 39use Hoa\Visitor; 40 41/** 42 * Class \Hoa\Compiler\Visitor\Dump. 43 * 44 * Dump AST produced by LL(k) compiler. 45 * 46 * @copyright Copyright © 2007-2017 Hoa community 47 * @license New BSD License 48 */ 49class Dump implements Visitor\Visit 50{ 51 /** 52 * Indentation depth. 53 * 54 * @var int 55 */ 56 protected static $_i = 0; 57 58 59 60 /** 61 * Visit an element. 62 * 63 * @param \Hoa\Visitor\Element $element Element to visit. 64 * @param mixed &$handle Handle (reference). 65 * @param mixed $eldnah Handle (not reference). 66 * @return mixed 67 */ 68 public function visit( 69 Visitor\Element $element, 70 &$handle = null, 71 $eldnah = null 72 ) { 73 ++self::$_i; 74 75 $out = str_repeat('> ', self::$_i) . $element->getId(); 76 77 if (null !== $value = $element->getValue()) { 78 $out .= 79 '(' . 80 ('default' !== $value['namespace'] 81 ? $value['namespace'] . ':' 82 : '') . 83 $value['token'] . ', ' . 84 $value['value'] . ')'; 85 } 86 87 $data = $element->getData(); 88 89 if (!empty($data)) { 90 $out .= ' ' . $this->dumpData($data); 91 } 92 93 $out .= "\n"; 94 95 foreach ($element->getChildren() as $child) { 96 $out .= $child->accept($this, $handle, $eldnah); 97 } 98 99 --self::$_i; 100 101 return $out; 102 } 103 104 /** 105 * Dump data. 106 * 107 * @param mixed $data Data. 108 * @return string 109 */ 110 protected function dumpData($data) 111 { 112 $out = null; 113 114 if (!is_array($data)) { 115 return $data; 116 } 117 118 foreach ($data as $key => $value) { 119 $out .= '[' . $key . ' => ' . $this->dumpData($value) . ']'; 120 } 121 122 return $out; 123 } 124} 125