PhpParser\Lexer::createTokenMap PHP Method

    protected function createTokenMap()
    {
        $tokenMap = array();
        // 256 is the minimum possible token number, as everything below
        // it is an ASCII value
        for ($i = 256; $i < 1000; ++$i) {
            if (T_DOUBLE_COLON === $i) {
                // T_DOUBLE_COLON is equivalent to T_PAAMAYIM_NEKUDOTAYIM
                $tokenMap[$i] = Tokens::T_PAAMAYIM_NEKUDOTAYIM;
            } elseif (T_OPEN_TAG_WITH_ECHO === $i) {
                // T_OPEN_TAG_WITH_ECHO with dropped T_OPEN_TAG results in T_ECHO
                $tokenMap[$i] = Tokens::T_ECHO;
            } elseif (T_CLOSE_TAG === $i) {
                // T_CLOSE_TAG is equivalent to ';'
                $tokenMap[$i] = ord(';');
            } elseif ('UNKNOWN' !== ($name = token_name($i))) {
                if ('T_HASHBANG' === $name) {
                    // HHVM uses a special token for #! hashbang lines
                    $tokenMap[$i] = Tokens::T_INLINE_HTML;
                } else {
                    if (defined($name = 'PhpParser\\Parser\\Tokens::' . $name)) {
                        // Other tokens can be mapped directly
                        $tokenMap[$i] = constant($name);
                    }
                }
            }
        }
        // HHVM uses a special token for numbers that overflow to double
        if (defined('T_ONUMBER')) {
            $tokenMap[T_ONUMBER] = Tokens::T_DNUMBER;
        }
        // HHVM also has a separate token for the __COMPILER_HALT_OFFSET__ constant
        if (defined('T_COMPILER_HALT_OFFSET')) {
            $tokenMap[T_COMPILER_HALT_OFFSET] = Tokens::T_STRING;
        }
        return $tokenMap;
    }