16047125402

Committed 03 Jul 2025 09:46AM UTC coverage: 94.048%. First build

Build # 16047125402

Build Type

push

github

Committed by

web-flow

Commit Message

Upgrade to PHPStan 2

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26 of 28 new or added lines in 3 files covered. (92.86%)

79 of 84 relevant lines covered (94.05%)

25.19 hits per line

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92.0

/src/Rules/NoNestedLoopsRule.php

<?php

/**
 * Copyright 2025 Alexey Kopytko <alexey@kopytko.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

declare(strict_types=1);

namespace Sanmai\PHPStanRules\Rules;

use PhpParser\Node;
use PhpParser\Node\Stmt\Do_;
use PhpParser\Node\Stmt\For_;
use PhpParser\Node\Stmt\Foreach_;
use PhpParser\Node\Stmt\While_;
use PHPStan\Analyser\Scope;
use PHPStan\Rules\Rule;
use PHPStan\Rules\RuleErrorBuilder;
use Override;

/**
 * @implements Rule<Node>
 */
final class NoNestedLoopsRule implements Rule
{
    public const ERROR_MESSAGE = 'Nested loops are not allowed. Use functional approaches like map(), filter(), or extract to a separate method.';

    #[Override]
    public function getNodeType(): string
    {
        return Node::class;
    }

    /**
     * @return list<\PHPStan\Rules\IdentifierRuleError>
     */
    #[Override]
    public function processNode(Node $node, Scope $scope): array
    {
        if (!$this->isLoopNode($node)) {
            return [];
        }

        // Only check direct statements within the loop body, not inside function calls
        $stmts = $this->getLoopStatements($node);
        if (null === $stmts) {
            return [];
        }

        $hasNestedLoop = $this->hasDirectNestedLoop($stmts);

        if (!$hasNestedLoop) {
            return [];
        }

        return [
            RuleErrorBuilder::message(self::ERROR_MESSAGE)
                ->identifier('sanmai.noNestedLoops')
                ->build(),
        ];
    }

    /**
     * @phpstan-assert-if-true For_|Foreach_|While_|Do_ $node
     * @psalm-assert-if-true For_|Foreach_|While_|Do_ $node
     */
    private function isLoopNode(Node $node): bool
    {
        return $node instanceof For_
            || $node instanceof Foreach_
            || $node instanceof While_
            || $node instanceof Do_;
    }


    /**
     * @return array<Node\Stmt>|null
     */
    private function getLoopStatements(Node $node): ?array
    {
        if (!$this->isLoopNode($node)) {
            return null;
        }

        return $node->stmts;
    }

    /**
     * @param array<Node> $stmts
     */
    private function hasDirectNestedLoop(array $stmts): bool
    {
        // Simply check if any direct statement is a loop
        foreach ($stmts as $stmt) {
            if ($this->isLoopNode($stmt)) {
                return true;
            }
        }

        return false;
    }
}

1	<?php
2
3	/**
4	* Copyright 2025 Alexey Kopytko <alexey@kopytko.com>
5	*
6	* Licensed under the Apache License, Version 2.0 (the "License");
7	* you may not use this file except in compliance with the License.
8	* You may obtain a copy of the License at
9	*
10	* http://www.apache.org/licenses/LICENSE-2.0
11	*
12	* Unless required by applicable law or agreed to in writing, software
13	* distributed under the License is distributed on an "AS IS" BASIS,
14	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15	* See the License for the specific language governing permissions and
16	* limitations under the License.
17	*/
18
19	declare(strict_types=1);
20
21	namespace Sanmai\PHPStanRules\Rules;
22
23	use PhpParser\Node;
24	use PhpParser\Node\Stmt\Do_;
25	use PhpParser\Node\Stmt\For_;
26	use PhpParser\Node\Stmt\Foreach_;
27	use PhpParser\Node\Stmt\While_;
28	use PHPStan\Analyser\Scope;
29	use PHPStan\Rules\Rule;
30	use PHPStan\Rules\RuleErrorBuilder;
31	use Override;
32
33	/**
34	* @implements Rule<Node>
35	*/
36	final class NoNestedLoopsRule implements Rule
37	{
38	public const ERROR_MESSAGE = 'Nested loops are not allowed. Use functional approaches like map(), filter(), or extract to a separate method.';
39
40	#[Override]
41	public function getNodeType(): string
42	{
43	return Node::class;	16✔
44	}
45
46	/**
47	* @return list<\PHPStan\Rules\IdentifierRuleError>
48	*/
49	#[Override]
50	public function processNode(Node $node, Scope $scope): array
51	{
52	if (!$this->isLoopNode($node)) {	16✔
53	return [];	16✔
54	}
55
56	// Only check direct statements within the loop body, not inside function calls
57	$stmts = $this->getLoopStatements($node);	12✔
58	if (null === $stmts) {	12✔
59	return [];	×
60	}
61
62	$hasNestedLoop = $this->hasDirectNestedLoop($stmts);	12✔
63
64	if (!$hasNestedLoop) {	12✔
65	return [];	12✔
66	}
67
68	return [	8✔
69	RuleErrorBuilder::message(self::ERROR_MESSAGE)	8✔
70	->identifier('sanmai.noNestedLoops')	8✔
71	->build(),	8✔
72	];	8✔
73	}
74
75	/**
76	* @phpstan-assert-if-true For_\|Foreach_\|While_\|Do_ $node
77	* @psalm-assert-if-true For_\|Foreach_\|While_\|Do_ $node
78	*/
79	private function isLoopNode(Node $node): bool
80	{
81	return $node instanceof For_	16✔
82	\|\| $node instanceof Foreach_	16✔
83	\|\| $node instanceof While_	16✔
84	\|\| $node instanceof Do_;	16✔
85	}
86
87
88	/**
89	* @return array<Node\Stmt>\|null
90	*/
91	private function getLoopStatements(Node $node): ?array
92	{
93	if (!$this->isLoopNode($node)) {	12✔
NEW 94	return null;	×
95	}
96
97	return $node->stmts;	12✔
98	}
99
100	/**
101	* @param array<Node> $stmts
102	*/
103	private function hasDirectNestedLoop(array $stmts): bool
104	{
105	// Simply check if any direct statement is a loop
106	foreach ($stmts as $stmt) {	12✔
107	if ($this->isLoopNode($stmt)) {	12✔
108	return true;	8✔
109	}
110	}
111
112	return false;	12✔
113	}
114	}

sanmai / phpstan-rules / 16047125402

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