Railt\Compiler\Grammar\Delegate\RuleDelegate

Complexity

Total Complexity

7

Size/Duplication

Total Lines	59
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	6

Test Coverage

Coverage

0%

Importance

Changes

0

5 Methods

Rating	Name	Duplication	Size	Complexity
A	getInnerTokens()	0	7	1
A	getTokens()	0	11	3
A	getRuleName()	0	4	1
A	isKept()	0	4	1
A	getDelegate()	0	4	1

<?php
/**
 * This file is part of Railt package.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
declare(strict_types=1);

namespace Railt\Compiler\Grammar\Delegate;

use Railt\Compiler\Grammar\LookaheadIterator;
use Railt\Lexer\Result\Eoi;
use Railt\Lexer\Result\Token;
use Railt\Lexer\TokenInterface;
use Railt\Parser\Ast\LeafInterface;
use Railt\Parser\Ast\NodeInterface;
use Railt\Parser\Ast\Rule;
use Railt\Parser\Ast\RuleInterface;

/**
 * Class RuleDelegate
 */
class RuleDelegate extends Rule
{
    /**
     * @return iterable|TokenInterface[]|LookaheadIterator
     */
    public function getInnerTokens(): iterable
    {
        return new LookaheadIterator((function () {
            yield from $this->getTokens($this->first('RuleProduction'));

$this->first('RuleProduction') is of type null|object<Railt\Parser\Ast\NodeInterface>, but the function expects a object<Railt\Parser\Ast\RuleInterface>.

            yield new Eoi(0);
        })->call($this));
    }

    /**
     * @param RuleInterface|NodeInterface $rule
     * @return \Traversable
     */
    private function getTokens(RuleInterface $rule): \Traversable
    {
        /** @var LeafInterface $child */
        foreach ($rule->getChildren() as $child) {
            if ($child instanceof RuleInterface) {
                yield from $this->getTokens($child);
            } else {
                yield new Token($child->getName(), $child->getValues(), $child->getOffset());
            }
        }
    }

    /**
     * @return string
     * @throws \Railt\Parser\Exception\InternalException
     * @throws \Railt\Parser\Exception\ParserException
     */
    public function getRuleName(): string
    {
        return $this->find('RuleName > T_NAME')->value();
    }

    /**
     * @return bool
     * @throws \Railt\Parser\Exception\InternalException
     * @throws \Railt\Parser\Exception\ParserException
     */
    public function isKept(): bool
    {
        return (bool)$this->first('ShouldKeep');
    }

    /**
     * @return null|string
     * @throws \Railt\Parser\Exception\InternalException
     * @throws \Railt\Parser\Exception\ParserException
     */
    public function getDelegate(): ?string
    {
        return $this->find('RuleDelegate > T_NAME')->value();
    }
}