parseMultitargetExpression example

final class DumpTokenParser extends AbstractTokenParser
{
    public function parse(Token $token): Node
    {
        $values = null;
        if (!$this->parser->getStream()->test(Token::BLOCK_END_TYPE)) {
            $values = $this->parser->getExpressionParser()->parseMultitargetExpression();
        }
        $this->parser->getStream()->expect(Token::BLOCK_END_TYPE);

        return new DumpNode($this->parser->getVarName(), $values, $token->getLine(), $this->getTag());
    }

    public function getTag(): string
    {
        return 'dump';
    }
}

final class SetTokenParser extends AbstractTokenParser
{
    public function parse(Token $token): Node
    {
        $lineno = $token->getLine();
        $stream = $this->parser->getStream();
        $names = $this->parser->getExpressionParser()->parseAssignmentExpression();

        $capture = false;
        if ($stream->nextIf(/* Token::OPERATOR_TYPE */ 8, '=')) {
            $values = $this->parser->getExpressionParser()->parseMultitargetExpression();

            $stream->expect(/* Token::BLOCK_END_TYPE */ 3);

            if (\count($names) !== \count($values)) {
                throw new SyntaxError('When using set, you must have the same number of variables and assignments.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
            }
        } else {
            $capture = true;

            if (\count($names) > 1) {
                throw new SyntaxError('When using set with a block, you cannot have a multi-target.', $stream->getCurrent()->getLine(), $stream->getSourceContext());
            }