private function expectedSurround(Input $in)
{
if (!$this->isSurroundChar($in->current())) {
throw new SyntaxError(sprintf('Unexpected "%s" at %s, expected %s', $in->current(), $in->context(), $this->surroundChar));
}
$in->next();
}
/**
* {@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)
{
while (true) {
$char = $in->current();
if (null === $char) {
throw new SyntaxError('Unexpected EOF at ' . $in->context());
}
if (!$this->isWhitespace($char)) {
break;
}
$in->next();
}
$cur = $in->current();
switch ($cur) {
case '(':
return new OpenList($this);
break;
case ')':
return new CloseList($this->previousState());
break;
case '"':
return new InsideString('"', $this);
break;
case "'":
return new InsideString("'", $this);
break;
case '+':
case '-':
$next = $in->peek();
if ($this->isWhitespace($next) || $this->isCloseList($next)) {
return new InsideIdent($this);
break;
}
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
return new InsideNumber($this);
break;
case null:
throw new SyntaxError('Unexpected EOF at ' . $in->context());
break;
default:
return new InsideIdent($this);
break;
}
}
private function checkNumberFinished($char, Input $in)
{
if (!$this->isWhitespace($char) && !$this->isCloseList($char)) {
throw new SyntaxError(sprintf('Unexpected "%s" at %s, expected whitespace or )', $char, $in->context()));
}
}
