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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\Matcher\MatcherInterface; |
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use Kadet\Highlighter\Parser\Token\Token; |
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/** |
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* Class Rule |
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* |
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* @package Kadet\Highlighter\Parser |
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* |
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* @property Language $language |
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* @property Language $inject |
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* @property integer $priority |
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* @property string $type |
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* @property TokenFactoryInterface $factory |
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* |
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*/ |
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class Rule |
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{ |
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const CONTEXT_IN = 1; |
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const CONTEXT_NOT_IN = 2; |
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const CONTEXT_IN_ONE_OF = 4; |
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const CONTEXT_EXACTLY = 8; |
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const CONTEXT_ON_TOP = 16; |
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private $_matcher; |
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private $_context = []; |
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private $_default = true; |
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private $_options; |
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private $_validator; |
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/** |
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* @param MatcherInterface|null $matcher |
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* @param array $options |
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*/ |
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public function __construct(MatcherInterface $matcher = null, array $options = []) |
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{ |
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$this->_matcher = $matcher; |
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// Default options: |
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$options = array_merge([ |
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'context' => [], |
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'priority' => 1, |
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'language' => false, |
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'factory' => new TokenFactory(Token::class), |
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], $options); |
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$this->setContext($options['context']); |
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$this->_options = $options; |
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$this->factory->setRule($this); |
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} |
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public function setContext($rules) |
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{ |
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if (is_callable($rules)) { |
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$this->_validator = $rules; |
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} else { |
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$this->_context = []; |
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foreach ($rules as $key => $rule) { |
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list($plain, $type) = $this->_getContextRule($rule); |
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$this->_context[$plain] = $type; |
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} |
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} |
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} |
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private function _getContextRule($rule) |
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{ |
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$types = [ |
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'!' => self::CONTEXT_NOT_IN, |
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'+' => self::CONTEXT_IN, |
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'*' => self::CONTEXT_IN_ONE_OF, |
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'@' => self::CONTEXT_EXACTLY, |
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'^' => self::CONTEXT_ON_TOP |
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]; |
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if (!isset($types[$rule[0]])) { |
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return [$rule, self::CONTEXT_IN]; |
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} |
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$type = 0; |
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$pos = 0; |
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foreach (str_split($rule) as $pos => $char) { |
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if (!isset($types[$char])) { |
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break; |
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} |
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if ($types[$char] == self::CONTEXT_IN_ONE_OF) { |
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$this->_default = false; |
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} |
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$type |= $types[$char]; |
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} |
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return [substr($rule, $pos), $type]; |
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} |
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/** |
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* @param $source |
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* |
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* @return Token[] |
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*/ |
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public function match($source) |
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{ |
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return $this->_matcher !== null ? $this->_matcher->match($source, $this->factory) : []; |
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} |
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public function validate($context, array $additional = []) |
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{ |
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if (is_callable($this->_validator)) { |
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$validator = $this->_validator; |
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return $validator($context, $additional); |
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} else { |
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return $this->_validate($context, array_merge($additional, $this->_context)); |
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} |
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} |
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private function _validate($context, $rules) |
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{ |
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if (empty($rules)) { |
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return count($context) === 0; |
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} |
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$result = $this->_default; |
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reset($rules); |
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while (list($rule, $type) = each($rules)) { |
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$matched = !($type & self::CONTEXT_EXACTLY) ? |
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!empty(preg_grep('/^'.preg_quote($rule).'(\.\w+)*/iS', $context)) : |
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in_array($rule, $context, true); |
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if ($type & self::CONTEXT_NOT_IN) { |
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2 |
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if ($matched) { |
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return false; |
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} |
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1 |
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$result = true; |
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7 |
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} elseif ($type & self::CONTEXT_IN) { |
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if (!$matched) { |
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return false; |
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} |
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$result = true; |
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$this->_unsetUnnecessaryRules($rule, $rules); |
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} elseif ($type & self::CONTEXT_IN_ONE_OF) { |
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1 |
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if ($matched) { |
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$result = true; |
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1 |
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$this->_unsetUnnecessaryRules($rule, $rules); |
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1 |
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} |
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1 |
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} |
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} |
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return $result; |
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} |
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private function _unsetUnnecessaryRules($rule, &$required) |
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{ |
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if (strpos($rule, '.') !== false) { |
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foreach (array_filter(array_keys($this->_context), function ($key) use ($rule) { |
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1 |
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return fnmatch($key . '.*', $rule); |
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1 |
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}) as $remove) { |
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1 |
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unset($required[$remove]); |
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1 |
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} |
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1 |
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} |
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} |
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public function __get($option) |
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{ |
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return isset($this->_options[$option]) ? $this->_options[$option] : null; |
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} |
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public function __set($option, $value) |
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{ |
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return $this->_options[$option] = $value; |
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} |
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public static function everywhere() |
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{ |
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static $callable; |
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if (!$callable) { |
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$callable = function () { |
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return true; |
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1 |
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}; |
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1 |
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} |
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return $callable; |
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} |
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} |
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kadet1090 /
KeyLighter
