original_string: private function MatchReg($tok){
  
  		if( preg_match($tok, $this->input, $match, 0, $this->pos) ){
  			$this->skipWhitespace(strlen($match[0]));
  			return $match;
  		}
  	}
code: private function MatchReg($tok){
  
  		if( preg_match($tok, $this->input, $match, 0, $this->pos) ){
  			$this->skipWhitespace(strlen($match[0]));
  			return $match;
  		}
  	}
code_tokens: private function MatchReg ( $ tok ) { if ( preg_match ( $ tok , $ this -> input , $ match , 0 , $ this -> pos ) ) { $ this -> skipWhitespace ( strlen ( $ match [ 0 ] ) ) ; return $ match ; } }
docstring: Match a regexp from the current start point
docstring_tokens: Match a regexp from the current start point