Chris@0: <?php
Chris@0: 
Chris@0: namespace PhpParser\Unserializer;
Chris@0: 
Chris@0: use DomainException;
Chris@0: use PhpParser\Unserializer;
Chris@0: use XMLReader;
Chris@0: 
Chris@0: /**
Chris@0:  * @deprecated
Chris@0:  */
Chris@0: class XML implements Unserializer
Chris@0: {
Chris@0:     protected $reader;
Chris@0: 
Chris@0:     public function __construct() {
Chris@0:         $this->reader = new XMLReader;
Chris@0:     }
Chris@0: 
Chris@0:     public function unserialize($string) {
Chris@0:         $this->reader->XML($string);
Chris@0: 
Chris@0:         $this->reader->read();
Chris@0:         if ('AST' !== $this->reader->name) {
Chris@0:             throw new DomainException('AST root element not found');
Chris@0:         }
Chris@0: 
Chris@0:         return $this->read($this->reader->depth);
Chris@0:     }
Chris@0: 
Chris@0:     protected function read($depthLimit, $throw = true, &$nodeFound = null) {
Chris@0:         $nodeFound = true;
Chris@0:         while ($this->reader->read() && $depthLimit < $this->reader->depth) {
Chris@0:             if (XMLReader::ELEMENT !== $this->reader->nodeType) {
Chris@0:                 continue;
Chris@0:             }
Chris@0: 
Chris@0:             if ('node' === $this->reader->prefix) {
Chris@0:                 return $this->readNode();
Chris@0:             } elseif ('scalar' === $this->reader->prefix) {
Chris@0:                 return $this->readScalar();
Chris@0:             } elseif ('comment' === $this->reader->name) {
Chris@0:                 return $this->readComment();
Chris@0:             } else {
Chris@0:                 throw new DomainException(sprintf('Unexpected node of type "%s"', $this->reader->name));
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         $nodeFound = false;
Chris@0:         if ($throw) {
Chris@0:             throw new DomainException('Expected node or scalar');
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     protected function readNode() {
Chris@0:         $className = $this->getClassNameFromType($this->reader->localName);
Chris@0: 
Chris@0:         // create the node without calling it's constructor
Chris@0:         $node = unserialize(
Chris@0:             sprintf(
Chris@0:                 "O:%d:\"%s\":1:{s:13:\"\0*\0attributes\";a:0:{}}",
Chris@0:                 strlen($className), $className
Chris@0:             )
Chris@0:         );
Chris@0: 
Chris@0:         $depthLimit = $this->reader->depth;
Chris@0:         while ($this->reader->read() && $depthLimit < $this->reader->depth) {
Chris@0:             if (XMLReader::ELEMENT !== $this->reader->nodeType) {
Chris@0:                 continue;
Chris@0:             }
Chris@0: 
Chris@0:             $type = $this->reader->prefix;
Chris@0:             if ('subNode' !== $type && 'attribute' !== $type) {
Chris@0:                 throw new DomainException(
Chris@0:                     sprintf('Expected sub node or attribute, got node of type "%s"', $this->reader->name)
Chris@0:                 );
Chris@0:             }
Chris@0: 
Chris@0:             $name = $this->reader->localName;
Chris@0:             $value = $this->read($this->reader->depth);
Chris@0: 
Chris@0:             if ('subNode' === $type) {
Chris@0:                 $node->$name = $value;
Chris@0:             } else {
Chris@0:                 $node->setAttribute($name, $value);
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         return $node;
Chris@0:     }
Chris@0: 
Chris@0:     protected function readScalar() {
Chris@0:         switch ($name = $this->reader->localName) {
Chris@0:             case 'array':
Chris@0:                 $depth = $this->reader->depth;
Chris@0:                 $array = array();
Chris@0:                 while (true) {
Chris@0:                     $node = $this->read($depth, false, $nodeFound);
Chris@0:                     if (!$nodeFound) {
Chris@0:                         break;
Chris@0:                     }
Chris@0:                     $array[] = $node;
Chris@0:                 }
Chris@0:                 return $array;
Chris@0:             case 'string':
Chris@0:                 return $this->reader->readString();
Chris@0:             case 'int':
Chris@0:                 return $this->parseInt($this->reader->readString());
Chris@0:             case 'float':
Chris@0:                 $text = $this->reader->readString();
Chris@0:                 if (false === $float = filter_var($text, FILTER_VALIDATE_FLOAT)) {
Chris@0:                     throw new DomainException(sprintf('"%s" is not a valid float', $text));
Chris@0:                 }
Chris@0:                 return $float;
Chris@0:             case 'true':
Chris@0:             case 'false':
Chris@0:             case 'null':
Chris@0:                 if (!$this->reader->isEmptyElement) {
Chris@0:                     throw new DomainException(sprintf('"%s" scalar must be empty', $name));
Chris@0:                 }
Chris@0:                 return constant($name);
Chris@0:             default:
Chris@0:                 throw new DomainException(sprintf('Unknown scalar type "%s"', $name));
Chris@0:         }
Chris@0:     }
Chris@0: 
Chris@0:     private function parseInt($text) {
Chris@0:         if (false === $int = filter_var($text, FILTER_VALIDATE_INT)) {
Chris@0:             throw new DomainException(sprintf('"%s" is not a valid integer', $text));
Chris@0:         }
Chris@0:         return $int;
Chris@0:     }
Chris@0: 
Chris@0:     protected function readComment() {
Chris@0:         $className = $this->reader->getAttribute('isDocComment') === 'true'
Chris@0:             ? 'PhpParser\Comment\Doc'
Chris@0:             : 'PhpParser\Comment'
Chris@0:         ;
Chris@0:         return new $className(
Chris@0:             $this->reader->readString(),
Chris@0:             $this->parseInt($this->reader->getAttribute('line'))
Chris@0:         );
Chris@0:     }
Chris@0: 
Chris@0:     protected function getClassNameFromType($type) {
Chris@0:         $className = 'PhpParser\\Node\\' . strtr($type, '_', '\\');
Chris@0:         if (!class_exists($className)) {
Chris@0:             $className .= '_';
Chris@0:         }
Chris@0:         if (!class_exists($className)) {
Chris@0:             throw new DomainException(sprintf('Unknown node type "%s"', $type));
Chris@0:         }
Chris@0:         return $className;
Chris@0:     }
Chris@0: }