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<?php |
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/** |
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* Highlighter |
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* |
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* Copyright (C) 2015, Some right reserved. |
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* |
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* @author Kacper "Kadet" Donat <[email protected]> |
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* |
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* Contact with author: |
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* Xmpp: [email protected] |
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* E-mail: [email protected] |
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* |
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* From Kadet with love. |
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*/ |
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namespace Kadet\Highlighter\Parser; |
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use Kadet\Highlighter\Language\Language; |
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use Kadet\Highlighter\Utils\Helper; |
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use Kadet\Highlighter\Utils\StringHelper; |
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class Token |
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{ |
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const NAME = null; |
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protected static $_id = 0; |
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public $pos; |
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public $name; |
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public $index = 1; |
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/** |
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* @var Token |
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*/ |
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protected $_end; |
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/** |
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* @var Token |
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*/ |
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protected $_start; |
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/** @var Rule */ |
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protected $_rule; |
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protected $_valid; |
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protected $_length; |
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public $id; |
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/** |
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* Token constructor. |
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*/ |
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public function __construct(array $options) |
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{ |
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// Name |
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if (isset($options[0])) { |
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$this->name = $options[0]; |
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} |
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if (isset($options['pos'])) { |
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$this->pos = $options['pos']; |
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} |
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if (isset($options['index'])) { |
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$this->index = $options['index']; |
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} |
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if (isset($options['start'])) { |
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$this->setStart($options['start']); |
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} |
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if (isset($options['rule'])) { |
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$this->setRule($options['rule']); |
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} |
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if (isset($options['end'])) { |
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$this->setEnd($options['end']); |
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} |
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$this->id = ++self::$_id; |
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if (isset($options['length'])) { |
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new static([$this->name, 'pos' => $this->pos + $options['length'], 'start' => $this, 'rule' => $this->getRule()]); |
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} |
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} |
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public static function compare(Token $a, Token $b) |
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{ |
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if ($a->pos === $b->pos) { |
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$multiplier = $a->isEnd() ? -1 : 1; |
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if (($rule = Helper::cmp($b->_rule->getPriority(), $a->_rule->getPriority())) !== 0) { |
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return $multiplier*$rule; |
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} |
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if (($a->isStart() && !$b->isStart()) || ($a->isEnd() && !$b->isEnd())) { |
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return $multiplier; |
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} |
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if (($rule = Helper::cmp($b->index, $a->index)) !== 0) { |
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return $multiplier*$rule; |
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} |
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return $multiplier*($a->id < $b->id ? -1 : 1); |
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} |
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return ($a->pos > $b->pos) ? 1 : -1; |
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} |
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public function isStart() |
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{ |
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return $this->_start === null && !($this->_rule instanceof CloseRule); |
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} |
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public function isEnd() |
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{ |
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return $this->_end === null && !($this->_rule instanceof OpenRule); |
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} |
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public function isValid(Language $language, $context = null) |
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{ |
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if ($this->_valid === null) { |
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$this->validate($language, $context); |
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} |
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return $this->_valid; |
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} |
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protected function validate(Language $language, $context) |
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{ |
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$this->setValid( |
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$language === $this->_rule->getLanguage() && |
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$this->_rule->validateContext($context, $this->isEnd() ? [$this->name => Rule::CONTEXT_IN] : []) |
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); |
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} |
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public function setValid($valid = true) |
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{ |
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$this->_valid = $valid; |
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if ($this->_end !== null) { |
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$this->_end->_valid = $this->_valid; |
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} elseif ($this->_start !== null) { |
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$this->_start->_valid = $this->_valid; |
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} |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getStart() |
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{ |
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return $this->_start; |
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} |
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/** |
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* @param Token $start |
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*/ |
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View Code Duplication |
public function setStart(Token $start = null) |
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{ |
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$this->_end = null; |
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$this->_start = $start; |
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if ($start !== null) { |
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$this->_start->_end = $this; |
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} |
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} |
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/** |
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* @return Token|null |
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*/ |
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public function getEnd() |
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{ |
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return $this->_end; |
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} |
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/** |
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* @param Token $end |
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*/ |
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View Code Duplication |
public function setEnd(Token $end = null) |
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{ |
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$this->_start = null; |
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$this->_end = $end; |
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$this->_length = null; |
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if ($end !== null) { |
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$this->_end->_start = $this; |
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} |
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} |
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/** |
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* @return Rule |
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*/ |
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public function getRule() |
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{ |
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return $this->_rule; |
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} |
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/** |
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* @param Rule $rule |
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*/ |
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public function setRule(Rule $rule) |
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{ |
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$this->_rule = $rule; |
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} |
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public function getLength() |
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{ |
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if ($this->_length === null) { |
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$this->_length = $this->_end === null ? 0 : $this->_end->pos - $this->pos; |
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} |
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return $this->_length; |
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} |
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public function dump($text = null) |
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{ |
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$pos = StringHelper::positionToLine($text, $this->pos); |
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$pos = $pos['line'] . ':' . $pos['pos']; |
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if ($this->isStart()) { |
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$result = "Start ({$this->name}) $pos"; |
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if ($text !== null && $this->_end !== null) { |
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$result .= " \x02" . substr($text, $this->pos, $this->_end->pos - $this->pos) . "\x03"; |
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} |
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} else { |
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$result = "End ({$this->name}) $pos"; |
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} |
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return $result; |
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} |
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} |
kadet1090 /
KeyLighter
