Verzeichnisstruktur phpBB-3.3.15
- Veröffentlicht
- 28.08.2024
So funktioniert es
|
|
Auf das letzte Element klicken. Dies geht jeweils ein Schritt zurück |
Auf das Icon klicken, dies öffnet das Verzeichnis. Nochmal klicken schließt das Verzeichnis. |
|
|
(Beispiel Datei-Icons)
|
Auf das Icon klicken um den Quellcode anzuzeigen |
SandboxNodeVisitor.php
001 <?php
002
003 /*
004 * This file is part of Twig.
005 *
006 * (c) Fabien Potencier
007 *
008 * For the full copyright and license information, please view the LICENSE
009 * file that was distributed with this source code.
010 */
011
012 namespace Twig\NodeVisitor;
013
014 use Twig\Environment;
015 use Twig\Node\CheckSecurityCallNode;
016 use Twig\Node\CheckSecurityNode;
017 use Twig\Node\CheckToStringNode;
018 use Twig\Node\Expression\Binary\ConcatBinary;
019 use Twig\Node\Expression\Binary\RangeBinary;
020 use Twig\Node\Expression\FilterExpression;
021 use Twig\Node\Expression\FunctionExpression;
022 use Twig\Node\Expression\GetAttrExpression;
023 use Twig\Node\Expression\NameExpression;
024 use Twig\Node\ModuleNode;
025 use Twig\Node\Node;
026 use Twig\Node\PrintNode;
027 use Twig\Node\SetNode;
028
029 /**
030 * @author Fabien Potencier <fabien@symfony.com>
031 */
032 final class SandboxNodeVisitor extends AbstractNodeVisitor
033 {
034 private $inAModule = false;
035 private $tags;
036 private $filters;
037 private $functions;
038
039 private $needsToStringWrap = false;
040
041 protected function doEnterNode(Node $node, Environment $env)
042 {
043 if ($node instanceof ModuleNode) {
044 $this->inAModule = true;
045 $this->tags = [];
046 $this->filters = [];
047 $this->functions = [];
048
049 return $node;
050 } elseif ($this->inAModule) {
051 // look for tags
052 if ($node->getNodeTag() && !isset($this->tags[$node->getNodeTag()])) {
053 $this->tags[$node->getNodeTag()] = $node;
054 }
055
056 // look for filters
057 if ($node instanceof FilterExpression && !isset($this->filters[$node->getNode('filter')->getAttribute('value')])) {
058 $this->filters[$node->getNode('filter')->getAttribute('value')] = $node;
059 }
060
061 // look for functions
062 if ($node instanceof FunctionExpression && !isset($this->functions[$node->getAttribute('name')])) {
063 $this->functions[$node->getAttribute('name')] = $node;
064 }
065
066 // the .. operator is equivalent to the range() function
067 if ($node instanceof RangeBinary && !isset($this->functions['range'])) {
068 $this->functions['range'] = $node;
069 }
070
071 if ($node instanceof PrintNode) {
072 $this->needsToStringWrap = true;
073 $this->wrapNode($node, 'expr');
074 }
075
076 if ($node instanceof SetNode && !$node->getAttribute('capture')) {
077 $this->needsToStringWrap = true;
078 }
079
080 // wrap outer nodes that can implicitly call __toString()
081 if ($this->needsToStringWrap) {
082 if ($node instanceof ConcatBinary) {
083 $this->wrapNode($node, 'left');
084 $this->wrapNode($node, 'right');
085 }
086 if ($node instanceof FilterExpression) {
087 $this->wrapNode($node, 'node');
088 $this->wrapArrayNode($node, 'arguments');
089 }
090 if ($node instanceof FunctionExpression) {
091 $this->wrapArrayNode($node, 'arguments');
092 }
093 }
094 }
095
096 return $node;
097 }
098
099 protected function doLeaveNode(Node $node, Environment $env)
100 {
101 if ($node instanceof ModuleNode) {
102 $this->inAModule = false;
103
104 $node->setNode('constructor_end', new Node([new CheckSecurityCallNode(), $node->getNode('constructor_end')]));
105 $node->setNode('class_end', new Node([new CheckSecurityNode($this->filters, $this->tags, $this->functions), $node->getNode('class_end')]));
106 } elseif ($this->inAModule) {
107 if ($node instanceof PrintNode || $node instanceof SetNode) {
108 $this->needsToStringWrap = false;
109 }
110 }
111
112 return $node;
113 }
114
115 private function wrapNode(Node $node, string $name)
116 {
117 $expr = $node->getNode($name);
118 if ($expr instanceof NameExpression || $expr instanceof GetAttrExpression) {
119 $node->setNode($name, new CheckToStringNode($expr));
120 }
121 }
122
123 private function wrapArrayNode(Node $node, string $name)
124 {
125 $args = $node->getNode($name);
126 foreach ($args as $name => $_) {
127 $this->wrapNode($args, $name);
128 }
129 }
130
131 public function getPriority()
132 {
133 return 0;
134 }
135 }
136
137 class_alias('Twig\NodeVisitor\SandboxNodeVisitor', 'Twig_NodeVisitor_Sandbox');
138