public function testEatChars()
{
$buffer = new Buffer("abcdef");
$buffer->nextLine();
$chars = $buffer->eatChars(2);
$this->assertSame("ab", $chars);
$this->assertSame("cdef", $buffer->getLine());
$this->assertSame(3, $buffer->getColumn());
$chars = $buffer->eatChars(5);
$this->assertSame("cdef", $chars);
$this->assertSame("", $buffer->getLine());
$this->assertSame(7, $buffer->getColumn());
}
protected function parseFilter(Buffer $buf)
{
if (!$buf->match('/:(.*)/A', $match)) {
return null;
}
$node = new Filter($match['pos'][0], $match[1]);
while (null !== ($next = $buf->peekLine())) {
$indent = '';
if ('' !== trim($next)) {
$indent = $this->indent->getString(1, $next);
if ('' === $indent) {
break;
}
if (strpos($next, $indent) !== 0) {
break;
}
}
$buf->nextLine();
$buf->eatChars(strlen($indent));
$str = $this->parseInterpolatedString($buf, false);
$node->addChild(new Statement($str->getPosition(), $str));
}
return $node;
}