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<?php declare(strict_types=1);

namespace PhpParser\Node\Scalar;

use PhpParser\Error;
use PhpParser\Node\Scalar;

class LNumber extends Scalar
{
    /* For use in "kind" attribute */
    const KIND_BIN = 2;
    const KIND_OCT = 8;
    const KIND_DEC = 10;
    const KIND_HEX = 16;

/** @var int Number value */
    public $value;

/**
     * Constructs an integer number scalar node.
     *
     * @param int   $value      Value of the number
     * @param array $attributes Additional attributes
     */
    public function __construct(int $value, array $attributes = []) {
        $this->attributes = $attributes;
        $this->value = $value;
    }

public function getSubNodeNames() : array {
        return ['value'];
    }

/**
     * Constructs an LNumber node from a string number literal.
     *
     * @param string $str               String number literal (decimal, octal, hex or binary)
     * @param array  $attributes        Additional attributes
     * @param bool   $allowInvalidOctal Whether to allow invalid octal numbers (PHP 5)
     *
     * @return LNumber The constructed LNumber, including kind attribute
     */
    public static function fromString(string $str, array $attributes = [], bool $allowInvalidOctal = false) : LNumber {
        $str = str_replace('_', '', $str);

if ('0' !== $str[0] || '0' === $str) {
            $attributes['kind'] = LNumber::KIND_DEC;
            return new LNumber((int) $str, $attributes);
        }

if ('x' === $str[1] || 'X' === $str[1]) {
            $attributes['kind'] = LNumber::KIND_HEX;
            return new LNumber(hexdec($str), $attributes);
        }

if ('b' === $str[1] || 'B' === $str[1]) {
            $attributes['kind'] = LNumber::KIND_BIN;
            return new LNumber(bindec($str), $attributes);
        }

if (!$allowInvalidOctal && strpbrk($str, '89')) {
            throw new Error('Invalid numeric literal', $attributes);
        }

// Strip optional explicit octal prefix.
        if ('o' === $str[1] || 'O' === $str[1]) {
            $str = substr($str, 2);
        }

// use intval instead of octdec to get proper cutting behavior with malformed numbers
        $attributes['kind'] = LNumber::KIND_OCT;
        return new LNumber(intval($str, 8), $attributes);
    }
    
    public function getType() : string {
        return 'Scalar_LNumber';
    }
}