smuuf/primi

<?php

declare(strict_types=1);

namespace Smuuf\Primi\Handlers;

use \Smuuf\Primi\Context;
use \Smuuf\Primi\Location;
use \Smuuf\Primi\Ex\SyntaxError;
use \Smuuf\Primi\Ex\RuntimeError;
use \Smuuf\Primi\Ex\ErrorException;
use \Smuuf\Primi\Ex\SystemException;

/**
 * Base node handler class for evaluating some AST node within given context.
 */
abstract class SimpleHandler extends Handler {

    /**
     * @param TypeDef_AstNode $node
     * @return mixed
     */
    final public static function run(
        array $node,
        Context $context
    ) {

        try {
            return static::handle($node, $context);
        } catch (RuntimeError|SyntaxError|SystemException $e) {

            $location = new Location(
                $context->getCurrentModule()->getStringRepr(),
                (int) $node['_l'],
                (int) $node['_p']
            );

            throw new ErrorException(
                $e->getMessage(),
                $location,
                $context->getCallStack()
            );

        }

    }

    /**
     * @param TypeDef_AstNode $node
     * @return mixed
     */
    abstract protected static function handle(array $node, Context $context);

}