Innmind\AMQP\Transport\Frame\Value\Sequence

Complexity

Total Complexity

7

Size/Duplication

Total Lines	67
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes

0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	13	2
A	fromStream()	0	15	2
A	__toString()	0	22	2
A	original()	0	3	1

<?php
declare(strict_types = 1);

namespace Innmind\AMQP\Transport\Frame\Value;

use Innmind\AMQP\{
    Transport\Frame\Value,
    Exception\UnboundedTextCannotBeWrapped,
};
use Innmind\Math\Algebra\Integer;
use Innmind\Stream\Readable;
use Innmind\Immutable\{
    Sequence as Seq,
    StreamInterface,
    Stream,
};

/**
 * It's an array, but "array" is a reserved keyword in PHP
 */
final class Sequence implements Value
{
    private $value;
    private $original;

    public function __construct(Value ...$values)
    {
        $values = Stream::of(Value::class, ...$values);

        $texts = $values->filter(static function(Value $value): bool {
            return $value instanceof Text;
        });

        if ($texts->size() > 0) {
            throw new UnboundedTextCannotBeWrapped;
        }

        $this->original = $values;
    }

    public static function fromStream(Readable $stream): Value
    {
        $length = UnsignedLongInteger::fromStream($stream)->original();
        $position = $stream->position()->toInt();
        $boundary = $position + $length->value();

        $values = [];

        while ($position < $boundary) {
            $class = Symbols::class((string) $stream->read(1));
            $values[] = [$class, 'fromStream']($stream);
            $position = $stream->position()->toInt();
        }

        return new self(...$values);
    }

    /**
     * @return StreamInterface<Value>
     */
    public function original(): StreamInterface
    {
        return $this->original;
    }

    public function __toString(): string
    {
        if (\is_null($this->value)) {
            $data = $this
                ->original
                ->reduce(
                    new Seq,
                    static function(Seq $carry, Value $value): Seq {
                        return $carry
                            ->add(Symbols::symbol(\get_class($value)))
                            ->add($value);
                    }
                )
                ->join('')
                ->toEncoding('ASCII');
            $this->value = (string) new UnsignedLongInteger(
                new Integer($data->length())
            );
            $this->value .= $data;
        }

        return $this->value;
    }
}