nicoSWD\Rule\Grammar\JavaScript\Methods\CharAt

Complexity

Total Complexity

4

Size/Duplication

Total Lines	27
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	4

Test Coverage

Coverage

100%

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
A	call()	0	20	4

<?php

declare(strict_types=1);

/**
 * @license     http://opensource.org/licenses/mit-license.php MIT
 * @link        https://github.com/nicoSWD
 * @author      Nicolas Oelgart <nico@oelgart.com>
 */
namespace nicoSWD\Rule\Grammar\JavaScript\Methods;

use nicoSWD\Rule\Grammar\CallableFunction;
use nicoSWD\Rule\TokenStream\Token\BaseToken;
use nicoSWD\Rule\TokenStream\Token\TokenInteger;
use nicoSWD\Rule\TokenStream\Token\TokenString;

final class CharAt extends CallableFunction
{
    /**
     * @param BaseToken $offset
     * @return BaseToken
     */
    public function call($offset = null): BaseToken
    {
        $tokenValue = $this->token->getValue();

        if (!$offset) {
            $offset = 0;
        } elseif (!$offset instanceof TokenInteger) {
            $offset = (int) $offset->getValue();
        } else {
            $offset = $offset->getValue();
        }

        if (!isset($tokenValue[$offset])) {
            $char = '';
        } else {
            $char = $tokenValue[$offset];
        }

        return new TokenString($char);
    }
}