if pattern is null, create patten with private variables

@return string
556105
private function createPatternWithVariables()
    {
        $variables = [
            $this->getMinute(),
            $this->getHour(),
            $this->getDayOfMounth(),
            $this->getMounth(),
            $this->getDayOfWeek(),
            $this->getYear(),
        ];

        return join(' ', $variables);
    }
238879
protected function parseData()
    {
        if (is_null($this->dataCache)) {
            $patternNamespace  = '(?P<namespace>[a-zA-Z0-9\\\\]+\\\\)?';
            $patternName       = '(?P<name>[a-zA-Z0-9]+)';
            $patternString     = '\"[^\"]*\"|\'[^\']*\'';
            $patternFloat      = '[0-9]+\.[0-9]+';
            $patternInt        = '[0-9]+';
            $patternBool       = 'true|false';
            $patternAttrValues = "({$patternString}|{$patternFloat}|{$patternInt}|{$patternBool})";
            $patternAttributes = "(?P<attr>\(\s*([a-zA-Z0-9]+\={$patternAttrValues}\s*\,?\s*)+\s*\))?";
            $pattern           = "^\@{$patternNamespace}{$patternName}\s*{$patternAttributes}(?P<rawtext>.*)$";
            
            if (preg_match("/{$pattern}/is", $this->getValue(), $matches)) {
                $this->dataCache = array(
                    'namespace'   => $matches['namespace'],
                    'name'        => $matches['name'],
                    'attributes'  => array(),
                    'tags'        => array(),
                );
                
                if (preg_match_all("/(?P<key>[a-zA-Z0-9]+)\s*\=\s*(?P<value>{$patternAttrValues})/is", $matches['attr'], $attributeMatches, PREG_SET_ORDER)) {
                    foreach ($attributeMatches as $attributeMatch) {
                        $key   = $attributeMatch['key'];
                        $value = $attributeMatch['value'];
                        switch(true){
                            case $value === 'true':
                                $value = true;
                                break;
                                
                            case $value === 'false':
                                $value = false;
                                break;
                                
                            case $value[0] === '"':
                            case $value[0] === "'":
                                $value = substr($value, 1, strlen($value)-2);
                                break;
                                
                            case strpos($value, '.')>0:
                                $value = (float)$value;
                                break;
                                
                            case is_numeric($value):
                                $value = (int)$value;
                                break;
                                
                        }
                        $this->dataCache['attributes'][$key] = $value;
                    }
                }
                
                foreach (preg_split("/\s+/is", trim($matches['rawtext'])) as $attributeTag) {
                    $this->dataCache['tags'][] = $attributeTag;
                }
            }
        }
        return $this->dataCache;
    }
53034
public function getPattern($key = null)
    {
        return isset($this->patterns[$key]) ? $this->patterns[$key] : $this->patterns;
    }
417707
public function getPattern()
    {
        if ($this->_pattern === null) {
            $this->_pattern = $this->extractTag('pattern');
        }

        return $this->_pattern;
    }
1152615
public function args_string()
	{
		if ( !isset( $this->args ) || !is_array( $this->args ) )
		{
			return null;
		}
		
		$args = $this->args;
		
		foreach( $args as $key => $arg )
		{
			if ( is_array( $arg ) )
			{
				$args[$key] = 'Array';
			} 
			else 
			{
				$args[$key] = var_export( $arg, true );
			}
		}
		
		return implode( ', ', $args );
	}
105092
protected function getPattern()/*# : string */
    {
        if (is_null($this->reference_pattern)) {
            if ('' === $this->reference_start ||
                is_null($this->reference_end)) {
                $this->reference_pattern = '';
            } else {
                $this->reference_pattern = '~('  .
                    preg_quote($this->reference_start) .
                    '([a-zA-Z_][a-zA-Z0-9._]*+)' .
                    preg_quote($this->reference_end) . ')~';
            }
        }
        return $this->reference_pattern;
    }
1360186
public function getPrivateKeyPassphrase()
    {
        if (isset($this->raw->{'key-pass'})
            && is_string($this->raw->{'key-pass'})) {
            return $this->raw->{'key-pass'};
        }

        return null;
    }
1053145
public static function vars()
    {
        if (func_num_args() === 0)
        {
            return null;
        }

        $variables = func_get_args();
        $output = [];
        foreach ($variables as $var)
        {
            $output[] = VarDumper::dump($var);
        }

        return implode("\n", $output);
    }
170012
public function getIdAndClassPattern()
    {
        $id = $this->getAttribute('id');
        $class = $this->getAttribute('class');

        $pattern = '';
        if (!empty($id)) {
            $pattern = '#'.$id.'|#'.$id;
        }
        if (!empty($class)) {
            if (!empty($pattern)) {
                $pattern .= '.'.$class.'|';
            }
            $pattern .= '.'.$class;
        }

        return empty($pattern) ? null : '/('.$pattern.')/';
    }
617445
protected function createRegex()
    {
        // Load list from driver
        if (empty($list = $this->getDriver()->getList())) {
            return null;
        }

        return sprintf('/\b(%s)\b/i', implode('|', array_map(function ($value) {
            if (isset($value[0]) && $value[0] == '[') {
                return $value;
            }
            else if (preg_match("/\r\n|\r|\n/", $value)) {
                return preg_replace("/\r\n|\r|\n/", "|", $value);
            }

            return preg_quote($value);

        }, $list)));
    }
234643
@Deprecated
    public Pattern getPattern() {
        if (patterns != null && !patterns.isEmpty()) {
            return patterns.get(0);
        } else {
            return null;
        }
    }
1127841
private function getPatternId() : string
    {
        return sprintf(
            '%s::u%d::c%d::d%s::p%s',
            $this->patternId['division'],
            $this->patternId['useragent'],
            $this->patternId['child'],
            $this->patternId['device'],
            $this->patternId['platform']
        );
    }
1217630
public static function addDefault()
    {
        static::$methods['null'] = function ($str) {
            return $str === null || $str === '';
        };
        static::$methods['len'] = function ($str, $min, $max = null) {
            $len = strlen($str);
            return null === $max ? $len === $min : $len >= $min && $len <= $max;
        };
        static::$methods['int'] = function ($str) {
            return (string)$str === ((string)(int)$str);
        };
        static::$methods['float'] = function ($str) {
            return (string)$str === ((string)(float)$str);
        };
        static::$methods['email'] = function ($str) {
            return filter_var($str, FILTER_VALIDATE_EMAIL) !== false;
        };
        static::$methods['url'] = function ($str) {
            return filter_var($str, FILTER_VALIDATE_URL) !== false;
        };
        static::$methods['ip'] = function ($str) {
            return filter_var($str, FILTER_VALIDATE_IP) !== false;
        };
        static::$methods['remoteip'] = function ($str) {
            return filter_var($str, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) !== false;
        };
        static::$methods['alnum'] = function ($str) {
            return ctype_alnum($str);
        };
        static::$methods['alpha'] = function ($str) {
            return ctype_alpha($str);
        };
        static::$methods['contains'] = function ($str, $needle) {
            return strpos($str, $needle) !== false;
        };
        static::$methods['regex'] = function ($str, $pattern) {
            return preg_match($pattern, $str);
        };
        static::$methods['chars'] = function ($str, $chars) {
            return preg_match("/^[$chars]++$/i", $str);
        };

        static::$default_added = true;
    }
406075
public function createRegex()
    {
        $parts = explode('/', ltrim($this->path, '/'));
        $regex = '/^'; // Matches the start of the string
        foreach ($parts as $part) {
            $regex .= '\/'; // Matches starting slash
            // Handle non-variable parts
            if (stripos($part, '{') === false &&
                stripos($part, '}') === false) {
                $regex .= $part; // Exactly match this part
                continue;
            }
            // Handle variable parts
            $name = str_ireplace(['{', '}'], '', $part);
            $this->parameterNames[] = $name;
            $this->parameters[$name] = null;
            // Check if a rule exists for this part
            if (isset($this->rules[$name])) {
                $regex .= $this->rules[$name];
                continue;
            }
            // No rule exists, match all except slashes
            $regex .= '([^\/]+)';
        }
        $regex .= '$/'; // Matches end of string
        $this->regex = $regex;
    }
1048954
protected function compile($pattern)
    {
        if (isset($this->compileCache[$pattern])) {
            return $this->compileCache[$pattern];
        }

        $pcre = '(^';

        do {
            switch (true) {
                case preg_match('(^[^{]+)', $pattern, $match):
                    $pattern = substr($pattern, strlen($match[0]));
                    $pcre .= preg_quote($match[0]);
                    break;

                case preg_match('(^' . self::STANDARD_VARIABLE_REGEX . ')', $pattern, $match):
                    $pattern = substr($pattern, strlen($match[0]));
                    $pcre .= '(?P<' . $match[1] . '>[^/]+)';
                    break;

                case preg_match('(^' . self::SLASHES_VARIABLE_REGEX . ')', $pattern, $match):
                    $pattern = substr($pattern, strlen($match[0]));
                    $pcre .= '(?P<' . $match[1] . '>.+)';
                    break;

                default:
                    throw new Exceptions\InvalidArgumentException("Invalid pattern part: '$pattern'.");
            }
        } while ($pattern);

        $pcre .= '$)S';

        $this->compileCache[$pattern] = $pcre;

        return $pcre;
    }
434827
public function parse() {
		
		// Skip parsing if the pattern is empty
		if (empty($this->pattern)) {
			$this->addLiteral('');
			return $this->head;
		}
		
		// Find all conversion words in the conversion pattern
		$count = preg_match_all($this->regex, $this->pattern, $matches, PREG_OFFSET_CAPTURE);
		if ($count === false) {
			$error = error_get_last();
			throw new \n2n\log4php\LoggerException("Failed parsing layotut pattern: {$error['message']}");
		}
		
		$prevEnd = 0;
		
		foreach($matches[0] as $key => $item) {
			
			// Locate where the conversion command starts and ends
			$length = strlen($item[0]);
			$start = $item[1];
			$end = $item[1] + $length;
		
			// Find any literal expressions between matched commands
			if ($start > $prevEnd) {
				$literal = substr($this->pattern, $prevEnd, $start - $prevEnd);
				$this->addLiteral($literal);
			}
			
			// Extract the data from the matched command
			$word = !empty($matches['word'][$key]) ? $matches['word'][$key][0] : null;
			$modifiers = !empty($matches['modifiers'][$key]) ? $matches['modifiers'][$key][0] : null;
			$option = !empty($matches['option'][$key]) ? $matches['option'][$key][0] : null;
			
			// Create a converter and add it to the chain
			$this->addConverter($word, $modifiers, $option);
			
			$prevEnd = $end;
		}

		// Add any trailing literals
		if ($end < strlen($this->pattern)) {
			$literal = substr($this->pattern, $end);
			$this->addLiteral($literal);
		}
		
		return $this->head;
	}
1287434
public function parseUnknown()
    {
        $token = $this->str[$this->last];
        if (Context::isSeparator($token)) {
            return null;
        }

        while (++$this->last < $this->len && ! Context::isSeparator($this->str[$this->last])) {
            $token .= $this->str[$this->last];
        }
        --$this->last;

        return new Token($token);
    }