134 lines
4.4 KiB
PHP
134 lines
4.4 KiB
PHP
<?php
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class PHPParser_Unserializer_XML implements PHPParser_Unserializer
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{
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protected $reader;
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public function __construct() {
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$this->reader = new XMLReader;
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}
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public function unserialize($string) {
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$this->reader->XML($string);
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$this->reader->read();
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if ('AST' !== $this->reader->name) {
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throw new DomainException('AST root element not found');
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}
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return $this->read($this->reader->depth);
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}
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protected function read($depthLimit, $throw = true, &$nodeFound = null) {
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$nodeFound = true;
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while ($this->reader->read() && $depthLimit < $this->reader->depth) {
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if (XMLReader::ELEMENT !== $this->reader->nodeType) {
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continue;
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}
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if ('node' === $this->reader->prefix) {
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return $this->readNode();
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} elseif ('scalar' === $this->reader->prefix) {
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return $this->readScalar();
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} elseif ('comment' === $this->reader->name) {
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return $this->readComment();
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} else {
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throw new DomainException(sprintf('Unexpected node of type "%s"', $this->reader->name));
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}
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}
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$nodeFound = false;
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if ($throw) {
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throw new DomainException('Expected node or scalar');
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}
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}
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protected function readNode()
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{
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$className = 'PHPParser_Node_' . $this->reader->localName;
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// create the node without calling it's constructor
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$node = unserialize(
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sprintf(
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"O:%d:\"%s\":2:{s:11:\"\0*\0subNodes\";a:0:{}s:13:\"\0*\0attributes\";a:0:{}}",
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strlen($className), $className
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)
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);
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$depthLimit = $this->reader->depth;
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while ($this->reader->read() && $depthLimit < $this->reader->depth) {
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if (XMLReader::ELEMENT !== $this->reader->nodeType) {
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continue;
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}
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$type = $this->reader->prefix;
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if ('subNode' !== $type && 'attribute' !== $type) {
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throw new DomainException(
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sprintf('Expected sub node or attribute, got node of type "%s"', $this->reader->name)
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);
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}
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$name = $this->reader->localName;
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$value = $this->read($this->reader->depth);
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if ('subNode' === $type) {
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$node->$name = $value;
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} else {
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$node->setAttribute($name, $value);
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}
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}
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return $node;
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}
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protected function readScalar() {
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switch ($name = $this->reader->localName) {
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case 'array':
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$depth = $this->reader->depth;
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$array = array();
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while (true) {
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$node = $this->read($depth, false, $nodeFound);
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if (!$nodeFound) {
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break;
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}
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$array[] = $node;
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}
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return $array;
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case 'string':
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return $this->reader->readString();
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case 'int':
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$text = $this->reader->readString();
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if (false === $int = filter_var($text, FILTER_VALIDATE_INT)) {
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throw new DomainException(sprintf('"%s" is not a valid integer', $text));
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}
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return $int;
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case 'float':
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$text = $this->reader->readString();
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if (false === $float = filter_var($text, FILTER_VALIDATE_FLOAT)) {
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throw new DomainException(sprintf('"%s" is not a valid float', $text));
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}
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return $float;
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case 'true':
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case 'false':
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case 'null':
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if (!$this->reader->isEmptyElement) {
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throw new DomainException(sprintf('"%s" scalar must be empty', $name));
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}
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return constant($name);
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default:
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throw new DomainException(sprintf('Unknown scalar type "%s"', $name));
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}
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}
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protected function readComment() {
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$className = $this->reader->getAttribute('isDocComment') === 'true'
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? 'PHPParser_Comment_Doc'
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: 'PHPParser_Comment'
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;
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return new $className(
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$this->reader->readString(),
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$this->reader->getAttribute('line')
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);
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}
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}
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