EthBytes.php

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<?php

namespace Ethereum\DataType;

use Ethereum\RLP\Rlp;

class EthBytes extends EthD
{

    public function validate($val, array $params)
    {
        if (!ctype_xdigit($this->removeHexPrefix($val))) {
            throw new \InvalidArgumentException(
              'Value of dynamic ABI type is not a valid hex string.'
            );
        }
        return $this->ensureHexPrefix($val);
    }

    public function validateLength($val)
    {
        if (strlen($val) % 2 !== 0) {
            throw new \InvalidArgumentException(
              'A valid bytes string must have a even number of letters.'
            );
        } else {
            return $val;
        }
    }

    public static function cretateFromRLP($hexVal)
    {
        $rlpItem = Rlp::decode($hexVal);
        return new EthBytes(self::ensureHexPrefix($rlpItem[0]->get()));
    }

    public function hexVal()
    {
        return $this->value;
    }

    public function encodedHexVal()
    {
        return $this->rlpVal();
    }

    public function rlpVal()
    {
        return Rlp::encode($this->value);
    }

    public function val()
    {
        return $this->removeHexPrefix($this->value);
    }

    public static function getDataLengthType()
    {
        return 'dynamic';
    }

}