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<?php declare(strict_types=1);
/*
 * This file is part of PHPUnit.
 *
 * (c) Sebastian Bergmann <sebastian@phpunit.de>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
namespace PHPUnit\Framework\MockObject\Rule;

use function count;
use PHPUnit\Framework\MockObject\Invocation as BaseInvocation;
use PHPUnit\Framework\MockObject\Verifiable;
use PHPUnit\Framework\SelfDescribing;

/**
 * @internal This class is not covered by the backward compatibility promise for PHPUnit
 */
abstract class InvocationOrder implements SelfDescribing, Verifiable
{
    /**
     * @var BaseInvocation[]
     */
    private $invocations = [];

    public function getInvocationCount(): int
    {
        return count($this->invocations);
    }

    public function hasBeenInvoked(): bool
    {
        return count($this->invocations) > 0;
    }

    final public function invoked(BaseInvocation $invocation)
    {
        $this->invocations[] = $invocation;

        return $this->invokedDo($invocation);
    }

    abstract public function matches(BaseInvocation $invocation): bool;

    abstract protected function invokedDo(BaseInvocation $invocation);
}