<?php
 
namespace App\Rules;

use Illuminate\Contracts\Validation\Rule;

class RulesetClauseOperator implements Rule
{

    public function passes($attribute, $value)
    {

        $quick_lookup = [ // It is built this way to ensure an O(1) lookup
            'start'         => true,
            'or'            => true,
            'and'           => true,
            'or-before'     => true,
            'and-before'    => true
        ];

        return isset($quick_lookup[$value]);

    }
 
    public function message()
    {
        return 'The :attribute must correlate to a known ruleset clause operation.';
    }
}