<?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\Constraint;

/**
 * @no-named-arguments Parameter names are not covered by the backward compatibility promise for PHPUnit
 */
abstract class Operator extends Constraint
{
    /**
     * Returns the name of this operator.
     */
    abstract public function operator(): string;

    /**
     * Returns this operator's precedence.
     *
     * @see https://www.php.net/manual/en/language.operators.precedence.php
     */
    abstract public function precedence(): int;

    /**
     * Returns the number of operands.
     */
    abstract public function arity(): int;

    /**
     * Validates $constraint argument.
     */
    protected function checkConstraint($constraint): Constraint
    {
        if (!$constraint instanceof Constraint) {
            return new IsEqual($constraint);
        }

        return $constraint;
    }

    /**
     * Returns true if the $constraint needs to be wrapped with braces.
     */
    protected function constraintNeedsParentheses(Constraint $constraint): bool
    {
        return $constraint instanceof self &&
               $constraint->arity() > 1 &&
               $this->precedence() <= $constraint->precedence();
    }
}

• [F] BinaryOperator.php
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• [F] LogicalAnd.php
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• [F] LogicalNot.php
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• [F] LogicalOr.php
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• [F] LogicalXor.php
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• [F] Operator.php
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• [F] UnaryOperator.php
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About Section

About NFC Pay: Our Story and Mission

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FAQ Section

Frequently Asked Questions About NFC Pay

Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.

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