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<?php
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namespace Vanderlee\Comprehend\Core;
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/**
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* Class Token
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*
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* @package Vanderlee\Comprehend\Core
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*
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* @property-read Token[] $children
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* @property-read string $class
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* @property-read string $group
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* @property-read string $input
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* @property-read int $length
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* @property-read int $offset
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* @property-read string $name
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* @property-read string $text
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*/
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class Token implements \JsonSerializable
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{
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private $group = null;
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private $name = null;
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private $input = null;
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private $offset = null;
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private $length = null;
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private $class = null;
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/**
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* @var Token[]
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*/
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private $children = [];
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public function __construct($group, $name, &$input, $offset, $length, &$children = [], $class = null)
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{
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$this->group = $group;
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$this->name = $name;
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$this->input = $input;
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$this->offset = &$offset;
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$this->length = $length;
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$this->children = $children;
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$this->class = $class;
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}
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public function __get($name)
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{
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switch ($name) {
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case 'text':
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return substr($this->input, $this->offset, $this->length);
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default:
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if (property_exists($this, $name)) {
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return $this->$name;
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}
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}
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throw new \Exception("Undefined property `{$name}`");
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}
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private function toString($depth = 0)
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{
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$signature = ($this->group ? $this->group . '::' : '')
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. ($this->name ?? $this->class);
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$output = str_repeat(' ', $depth) . "{$signature} (`{$this->text}`)";
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foreach ($this->children as $child) {
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$output .= PHP_EOL . $child->toString($depth + 1);
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}
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return $output;
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}
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public function __toString()
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{
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return $this->toString();
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}
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/**
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* @return \DOMDocument
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*/
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public function toXml()
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{
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$document = new \DOMDocument();
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$document->appendChild($this->createXmlNode($document));
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$document->normalizeDocument();
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return $document;
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}
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/**
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* Create an XML node of this token
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*
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* @param \DOMDocument $document
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* @return \DOMElement
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*/
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private function createXmlNode(\DOMDocument $document)
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{
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$name = $this->name ?? $this->class;
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$name = preg_replace('/[^-_a-zA-Z0-9]/', '_', $name);
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$group = preg_replace('/[^-_a-zA-Z0-9]/', '_', $this->group);
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$value = $this->children ? null : $this->text;
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if ($this->group !== null) {
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$element = $document->createElementNS($this->group, $group . ':' . $name, $value);
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} else {
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$element = $document->createElement($name, $value);
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}
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foreach ($this->children as $child) {
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$element->appendChild($child->createXmlNode($document));
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}
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return $element;
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}
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/**
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* Convert object to JSON for json_encode
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* Implements /JsonSerializable interface
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*/
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public function jsonSerialize()
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{
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return $this->toArray();
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}
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/**
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* Output this node as an array.
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*
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* @return array
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*/
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public function toArray()
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{
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$array = [
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'group' => $this->group,
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'name' => $this->name,
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'text' => $this->text,
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'offset' => $this->offset,
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'length' => $this->length,
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'class' => $this->class,
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'children' => [],
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];
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foreach ($this->children as $child) {
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$array['children'][] = $child->toArray();
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}
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return $array;
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}
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} |
vanderlee /
Comprehend
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