JsonHandler::validate() - Code Metrics - Inspection of "Move translator from rule handlers to `Validator`..." - yiisoft/validator - Measure and Improve Code Quality continuously with Scrutinizer

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by Sergei

created 2022-10-14 17:35 UTC

JsonHandler::validate() A

↳ Parent: JsonHandler

Complexity

Conditions	3
Paths	3

Size

Total Lines	19
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	9
CRAP Score	3

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	9
c	1
b	0
f	0
dl	0
loc	19
ccs	9
cts	9
cp	1
rs	9.9666
cc	3
nc	3
nop	3
crap	3

<?php

declare(strict_types=1);

namespace Yiisoft\Validator\Rule;

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

use function is_string;

/**
 * Validates that the value is a valid json.
 */
final class JsonHandler implements RuleHandlerInterface
{
    public function validate(mixed $value, object $rule, ValidationContext $context): Result
    {
        if (!$rule instanceof Json) {
            throw new UnexpectedRuleException(Json::class, $rule);
        }

        $result = new Result();

        if (!$this->isValidJson($value)) {
            $result->addError(
                $rule->getMessage(),
                [
                    'attribute' => $context->getAttribute(),
                    'value' => $value,
                ],
            );
        }

        return $result;
    }

    private function isValidJson($value): bool
    {
        // Regular expression is built based on JSON grammar specified at
        // https://tools.ietf.org/html/rfc8259
        $regex = <<<'REGEX'
        /
        (?(DEFINE)
            (?<json>(?>\s*(?&object)\s*|\s*(?&array)\s*))
            (?<object>(?>\{\s*(?>(?&member)(?>\s*,\s*(?&member))*)?\s*\}))
            (?<member>(?>(?&string)\s*:\s*(?&value)))
            (?<array>(?>\[\s*(?>(?&value)(?>\s*,\s*(?&value))*)?\s*\]))
            (?<value>(?>)false|null|true|(?&object)|(?&array)|(?&number)|(?&string))
            (?<number>(?>-?(?>0|[1-9]\d*)(?>\.\d+)?(?>[eE][-+]?\d+)?))
            (?<string>(?>"(?>\\(?>["\\\/bfnrt]|u[a-fA-F0-9]{4})|[^"\\\0-\x1F\x7F]+)*"))
        )
        \A(?&json)\z
        /x
        REGEX;

        return is_string($value) && preg_match($regex, $value) === 1;
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Yiisoft\Validator\Rule;
6
7		use Yiisoft\Validator\Exception\UnexpectedRuleException;
8		use Yiisoft\Validator\Result;
9		use Yiisoft\Validator\RuleHandlerInterface;
10		use Yiisoft\Validator\ValidationContext;
11
12		use function is_string;
13
14		/**
15		* Validates that the value is a valid json.
16		*/
17		final class JsonHandler implements RuleHandlerInterface
18		{
19	10	public function validate(mixed $value, object $rule, ValidationContext $context): Result
20		{
21	10	if (!$rule instanceof Json) {
22	1	throw new UnexpectedRuleException(Json::class, $rule);
23		}
24
25	9	$result = new Result();
26
27	9	if (!$this->isValidJson($value)) {
28	6	$result->addError(
29	6	$rule->getMessage(),
30		[
31	6	'attribute' => $context->getAttribute(),
32		'value' => $value,
33		],
34		);
35		}
36
37	9	return $result;
38		}
39
40	9	private function isValidJson($value): bool
41		{
42		// Regular expression is built based on JSON grammar specified at
43		// https://tools.ietf.org/html/rfc8259
44	9	$regex = <<<'REGEX'
45		/
46		(?(DEFINE)
47		(?<json>(?>\s(?&object)\s\|\s(?&array)\s))
48		(?<object>(?>\{\s(?>(?&member)(?>\s,\s(?&member)))?\s*\}))
49		(?<member>(?>(?&string)\s:\s(?&value)))
50		(?<array>(?>\[\s(?>(?&value)(?>\s,\s(?&value)))?\s*\]))
51		(?<value>(?>)false\|null\|true\|(?&object)\|(?&array)\|(?&number)\|(?&string))
52		(?<number>(?>-?(?>0\|[1-9]\d*)(?>\.\d+)?(?>[eE][-+]?\d+)?))
53		(?<string>(?>"(?>\\(?>["\\\/bfnrt]\|u[a-fA-F0-9]{4})\|[^"\\\0-\x1F\x7F]+)*"))
54		)
55		\A(?&json)\z
56		/x
57		REGEX;
58
59	9	return is_string($value) && preg_match($regex, $value) === 1;
60		}
61		}
62

yiisoft / validator

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JsonHandler::validate() A

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