PHP PHPeg\Grammar\Tree ChoiceNode Examples

Example #1

File: ToClassVisitorSpec.php Project: scato/phpeg

    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);
    }

Example #2

File: ToClassVisitor.php Project: scato/phpeg

    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;
    }