Yiisoft\Validator\Rule\CompareTo\CompareToHandler

Complexity

Total Complexity

13

Size/Duplication

Total Lines	70
Duplicated Lines	0 %

Test Coverage

Coverage

90.32%

Importance

Changes

0

2 Methods

Rating	Name	Duplication	Size	Complexity
B	compareValues()	0	28	10
A	validate()	0	13	3

<?php

declare(strict_types=1);

namespace Yiisoft\Validator\Rule\CompareTo;

use Yiisoft\Validator\Result;
use Yiisoft\Validator\Rule\RuleHandlerInterface;
use Yiisoft\Validator\ValidationContext;
use Yiisoft\Validator\ValidatorInterface;
use Yiisoft\Validator\Exception\UnexpectedRuleException;

/**
 * Compares the specified value with another value.
 *
 * The value being compared with a constant {@see CompareTo::$compareValue}, which is set
 * in the constructor.
 *
 * It supports different comparison operators, specified
 * via the {@see CompareTo::$operator}.
 *
 * The default comparison function is based on string values, which means the values
 * are compared byte by byte. When comparing numbers, make sure to change {@see CompareTo::$type} to
 * {@see CompareTo::TYPE_NUMBER} to enable numeric comparison.
 */
final class CompareToHandler implements RuleHandlerInterface
{
    /**
     * Constant for specifying the comparison as string values.
     * No conversion will be done before comparison.
     *
     * @see $type
     */
    public const TYPE_STRING = 'string';
    /**
     * Constant for specifying the comparison as numeric values.
     * String values will be converted into numbers before comparison.
     *
     * @see $type
     */
    public const TYPE_NUMBER = 'number';

    public function validate(mixed $value, object $rule, ValidatorInterface $validator, ?ValidationContext $context = null): Result
    {
        if (!$rule instanceof CompareTo) {
            throw new UnexpectedRuleException(CompareTo::class, $rule);
        }

        $result = new Result();

        if (!$this->compareValues($rule->operator, $rule->type, $value, $rule->compareValue)) {
            $result->addError($rule->getMessage(), ['value' => $rule->compareValue]);
        }

        return $result;
    }

    /**
     * Compares two values with the specified operator.
     *
     * @param string $operator the comparison operator
     * @param string $type the type of the values being compared
     * @param mixed $value the value being compared
     * @param mixed $compareValue another value being compared
     *
     * @return bool whether the comparison using the specified operator is true.
     */
    private function compareValues(string $operator, string $type, $value, $compareValue): bool
    {
        if ($type === self::TYPE_NUMBER) {
            $value = (float) $value;
            $compareValue = (float)$compareValue;
        } else {
            $value = (string) $value;
            $compareValue = (string) $compareValue;
        }
        switch ($operator) {
            case '==':
                return $value == $compareValue;
            case '===':
                return $value === $compareValue;
            case '!=':
                return $value != $compareValue;
            case '!==':
                return $value !== $compareValue;
            case '>':
                return $value > $compareValue;
            case '>=':
                return $value >= $compareValue;
            case '<':
                return $value < $compareValue;
            case '<=':
                return $value <= $compareValue;
            default:
                return false;
        }
    }
}