function it_should_create_a_choice_from_a_node()
{
$choiceNode = new ChoiceNode(array(new RuleReferenceNode('Foo'), new RuleReferenceNode('Bar')));
$choiceCode = <<<EOS
\$_position1 = \$this->position;
\$_cut2 = \$this->cut;
\$this->cut = false;
\$_success = \$this->parseFoo();
if (!\$_success && !\$this->cut) {
\$this->position = \$_position1;
\$_success = \$this->parseBar();
}
\$this->cut = \$_cut2;
EOS;
$choiceNode->accept($this->getWrappedObject());
$this->getResult()->shouldBe($choiceCode);
}
public function visitChoice(ChoiceNode $node)
{
$position = $this->id('position');
$cut = $this->id('cut');
$pieces = $this->getResults($node->getLength());
$result = <<<EOS
{$position} = \$this->position;
{$cut} = \$this->cut;
\$this->cut = false;
{$pieces[0]}
EOS;
foreach (array_slice($pieces, 1) as $piece) {
$result .= <<<EOS
if (!\$_success && !\$this->cut) {
\$this->position = {$position};
{$this->indent($piece)}
}
EOS;
}
$result .= <<<EOS
\$this->cut = {$cut};
EOS;
$this->results[] = $result;
}