smuuf/primi

<?php

declare(strict_types=1);

namespace Smuuf\Primi\Helpers\Wrappers;

use \Smuuf\StrictObject;
use \Smuuf\Primi\Context;
use \Smuuf\Primi\StackFrame;
use \Smuuf\Primi\Scope;

/**
 * @internal
 */
class ContextPushPopWrapper extends AbstractWrapper {

    use StrictObject;

    private Context $ctx;

    /** Call frame to push to call stack. */
    private ?StackFrame $call;

    /** Scope to push to scope stack. (optional) */
    private ?Scope $scope;

    public function __construct(
        Context $ctx,
        ?StackFrame $call = \null,
        ?Scope $scope = \null
    ) {
        $this->ctx = $ctx;
        $this->call = $call;
        $this->scope = $scope;
    }

    /**
     * Push the call ID and scope (if present) onto call stack and scope stack.
     *
     * @return mixed
     */
    public function executeBefore() {

        $this->ctx->pushCallScopePair(
            $this->call,
            $this->scope,
        );

        return $this->ctx;

    }

    /**
     * Pop the items from call stack and scope stack.
     */
    public function executeAfter(): void {

        $this->ctx->popCallScopePair(
            (bool) $this->call,
            (bool) $this->scope,
        );

        unset($this->call, $this->scope);

    }

}