/**
* {@inheritdoc}
*/
public function lex(Input $in, Lexer $lexer)
{
$cur = $in->current();
if ('+' === $cur || '-' === $cur) {
$in->next();
}
$isHex = false;
$digits = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
// range('0', '9')? lolphp
if ('0' === $in->current() && in_array($in->peek(), ['x', 'X'])) {
$in->next();
$in->next();
$isHex = true;
$digits = array_merge($digits, range('a', 'f'), range('A', 'F'));
}
$this->consumeDigits($in, $digits);
$char = $in->current();
if ($isHex || '.' !== $char) {
$this->checkNumberFinished($char, $in);
$lexer->emit(Token::INT_VALUE);
} elseif ('.' === $char) {
$in->next();
$this->consumeDigits($in, $digits);
$this->checkNumberFinished($in->peek(), $in);
$lexer->emit(TOKEN::FLOAT_VALUE);
}
return $this->previousState();
}
/**
* {@inheritdoc}
*/
public function lex(Input $in, Lexer $lexer)
{
if (!$this->isCloseList($in->next())) {
throw new SyntaxError(sprintf('Unexpected "%s" at %s, expected (', $in->current(), $in->context()));
}
$lexer->emit(Token::CLOSE_LIST);
return $this->previousState() ?: new OpenList();
}
/**
* {@inheritdoc}
*/
public function lex(Input $in, Lexer $lexer)
{
while (true) {
$char = $in->current();
if (null === $char) {
throw new SyntaxError('Unexpected EOF at ' . $in->context());
}
if ($this->isWhitespace($char) || $this->isCloseList($char)) {
break;
}
$in->next();
}
$lexer->emit(Token::IDENTIFIER);
return $this->previousState();
}
/**
* {@inheritdoc}
*/
public function lex(Input $in, Lexer $lexer)
{
do {
$char = $in->next();
} while ($this->isWhitespace($char) && null !== $char);
if (null === $char) {
$lexer->emit(Token::EOF);
return self::STOP_TOKENIZING;
}
if (!$this->isOpenList($char)) {
throw new SyntaxError(sprintf('Unexpected "%s" at %s, expected (', $char, $in->context()));
}
$lexer->emit(Token::OPEN_LIST);
return new InsideList($this->previousState());
}
/**
* {@inheritdoc}
*/
public function lex(Input $in, Lexer $lexer)
{
$this->expectedSurround($in);
while (true) {
$cur = $in->current();
if (null === $cur) {
throw new SyntaxError('Unexpected EOF at ' . $in->context());
}
if ($this->isSurroundChar($cur) && '\\' !== $in->lookbehind()) {
break;
}
$in->next();
}
$this->expectedSurround($in);
$lexer->emit(Token::STRING_VALUE);
return $this->previousState();
}
