public function testGetSubstring()
{
$reader = new Reader('hello');
$this->assertEquals('he', $reader->getSubstring(2));
$this->assertEquals('el', $reader->getSubstring(2, 1));
$this->assignPosition($reader, 2);
$this->assertEquals('ll', $reader->getSubstring(2));
$this->assertEquals('lo', $reader->getSubstring(2, 1));
}
/**
* {@inheritdoc}
*/
public function handle(Reader $reader, TokenStream $stream)
{
if ('/*' !== $reader->getSubstring(2)) {
return false;
}
$offset = $reader->getOffset('*/');
if (false === $offset) {
$reader->moveToEnd();
} else {
$reader->moveForward($offset + 2);
}
return true;
}
/**
* {@inheritdoc}
*/
public function handle(Reader $reader, TokenStream $stream)
{
$quote = $reader->getSubstring(1);
if (!in_array($quote, array("'", '"'))) {
return false;
}
$reader->moveForward(1);
$match = $reader->findPattern($this->patterns->getQuotedStringPattern($quote));
if (!$match) {
throw new InternalErrorException(sprintf('Should have found at least an empty match at %s.', $reader->getPosition()));
}
// check unclosed strings
if (strlen($match[0]) === $reader->getRemainingLength()) {
throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
}
// check quotes pairs validity
if ($quote !== $reader->getSubstring(1, strlen($match[0]))) {
throw SyntaxErrorException::unclosedString($reader->getPosition() - 1);
}
$string = $this->escaping->escapeUnicodeAndNewLine($match[0]);
$stream->push(new Token(Token::TYPE_STRING, $string, $reader->getPosition()));
$reader->moveForward(strlen($match[0]) + 1);
return true;
}