public function getLexer()
    {
        if (null === $this->lexer) {
            $this->lexer = new Twig_Lexer($this);
        }

        return $this->lexer;
    }
public function getLexer()
    {
        if (null === $this->lexer) {
            $this->lexer = new Twig_Lexer($this);
        }

        return $this->lexer;
    }
public function getLexer ( ) { if ( null === $ this -> lexer ) { $ this -> lexer = new Twig_Lexer ( $ this ) ; } return $ this -> lexer ; }
Gets the Lexer instance.

@return Twig_LexerInterface A Twig_LexerInterface instance
Gets the Lexer instance .