UCVFSortingSniff::loadSubTokens() - Code Metrics - Inspection of "PHPCS-148 Added sniff to detect "equal" operators." - bestit/PHP_CodeSniffer - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Push — master ( 239abe...00bc3e )

by Björn

created 2018-12-30 21:25 UTC

UCVFSortingSniff::loadSubTokens() A

↳ Parent: UCVFSortingSniff

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	6
rs	10
c	0
b	0
f	0
cc	1
nc	1
nop	0

<?php

declare(strict_types=1);

namespace BestIt\Sniffs\Formatting;

use BestIt\CodeSniffer\Helper\PropertyHelper;
use BestIt\Sniffs\AbstractSniff;
use BestIt\Sniffs\ClassRegistrationTrait;
use SlevomatCodingStandard\Helpers\TokenHelper;
use SlevomatCodingStandard\Helpers\UseStatementHelper;
use function array_combine;
use function array_filter;
use function array_keys;
use function array_map;
use function array_search;
use function uasort;
use const T_CONST;
use const T_FUNCTION;
use const T_USE;
use const T_VARIABLE;

/**
 * Checks the sorting of the contents of a class (T_USE > T_CONST > T_VARIABLE > T_FUNCTION).
 *
 * @author blange <[email protected]>
 * @package BestIt\Sniffs\Formatting
 */
class UCVFSortingSniff extends AbstractSniff
{
    use ClassRegistrationTrait;

    /**
     * Error code for the wrong position of a structure.
     *
     * @var string
     */
    public const CODE_WRONG_POSITION = 'WrongPosition';

    /**
     * The error message of a structure is at the wrong position.
     *
     * @var string
     */
    private const MESSAGE_WRONG_POSITION = 'Your php structure is at a wrong position. ' .
        'The sorting order is: T_USE, T_CONST, T_VARIABLE, T_FUNCTION. We expect a %s (%s).';

    /**
     * The tokens which are checked in the correct sorting order.
     *
     * @var array
     */
    private $sortedTokens = [
        T_USE,
        T_CONST,
        T_VARIABLE,
        T_FUNCTION
    ];

    /**
     * Loads the positons for the tokens of $this->>sortedTokens.
     *
     * @return int[]
     */
    private function loadSubTokenPositions(): array
    {
        return TokenHelper::findNextAll(
            $this->file->getBaseFile(),
            $this->sortedTokens,
            $this->stackPos,
            $this->token['scope_closer']
        );
    }

    /**
     * Loads all sub tokens.
     *
     * @return array
     */
    private function loadSubTokens(): array
    {
        $subTokens = $this->loadTokensForPositions($this->loadSubTokenPositions());

        return $this->removeUnwantedTokens($subTokens);
    }

    /**
     * Loads the tokens for the positions.
     *
     * @param array $subTokenPoss
     *
     * @return array
     */
    private function loadTokensForPositions(array $subTokenPoss): array
    {
        $subTokens = array_map(function (int $position): array {
            return $this->tokens[$position];
        }, $subTokenPoss);

        return array_combine($subTokenPoss, $subTokens);
    }

    /**
     * Processes the token.
     *
     * @return void
     */
    protected function processToken(): void
    {
        $subTokens = $this->loadSubTokens();
        $sortedTokens = $this->sortTokens($subTokens);

        $this->validateSorting($subTokens, $sortedTokens);
    }

    /**
     * Removes inline vars and uses for anon-functions.
     *
     * @param array $subTokens
     *
     * @return array
     */
    private function removeUnwantedTokens(array $subTokens): array
    {
        return array_filter($subTokens, function (array $subToken): bool {
            switch ($subToken['code']) {
                case T_VARIABLE:
                    $return = (new PropertyHelper($this->file))->isProperty($subToken['pointer']);
/** @return stdClass|null */
function mayReturnNull() { }

function doesNotAcceptNull(stdClass $x) { }

// With potential error.
function withoutCheck() {
    $x = mayReturnNull();
    doesNotAcceptNull($x); // Potential error here.
}

// Safe - Alternative 1
function withCheck1() {
    $x = mayReturnNull();
    if ( ! $x instanceof stdClass) {
        throw new \LogicException('$x must be defined.');
    }
    doesNotAcceptNull($x);
}

// Safe - Alternative 2
function withCheck2() {
    $x = mayReturnNull();
    if ($x instanceof stdClass) {
        doesNotAcceptNull($x);
    }
}
                    break;

                case T_USE:
                    $return = UseStatementHelper::isTraitUse($this->file, $subToken['pointer']);
/** @return stdClass|null */
function mayReturnNull() { }

function doesNotAcceptNull(stdClass $x) { }

// With potential error.
function withoutCheck() {
    $x = mayReturnNull();
    doesNotAcceptNull($x); // Potential error here.
}

// Safe - Alternative 1
function withCheck1() {
    $x = mayReturnNull();
    if ( ! $x instanceof stdClass) {
        throw new \LogicException('$x must be defined.');
    }
    doesNotAcceptNull($x);
}

// Safe - Alternative 2
function withCheck2() {
    $x = mayReturnNull();
    if ($x instanceof stdClass) {
        doesNotAcceptNull($x);
    }
}
                    break;

                default:
                    $return = true;
            }

            return $return;
        });
    }

    /**
     * This sniff needs the pointer marker so add it to the tokens.
     *
     * @return void
     */
    protected function setUp(): void
    {
        parent::setUp();

        $this->addPointerToTokens();
    }

    /**
     * Sorts the tokens as required by $this->sortingTokens.
     *
     * @param array $subTokens
     *
     * @return array
     */
    private function sortTokens(array $subTokens): array
    {
        uasort($subTokens, function (array $leftToken, array $rightToken): int {
            // Don't change the structure by default.
            $return = $leftToken['line'] <=> $rightToken['line'];

            // Sort by type
            if ($leftToken['code'] != $rightToken['code']) {
                $leftIndex = array_search($leftToken['code'], $this->sortedTokens);
                $rightIndex = array_search($rightToken['code'], $this->sortedTokens);

                $return = $leftIndex <=> $rightIndex;
            }

            return $return;
        });

        return $subTokens;
    }

    /**
     * Validates the sorting of the tokens and registers an error if wrong sorted.
     *
     * @param array $originalTokens
     * @param array $sortedTokens
     *
     * @return void
     */
    private function validateSorting(array $originalTokens, array $sortedTokens): void
    {
        $sortedPositions = array_keys($sortedTokens);
        $sortedIndex = 0;

        foreach ($originalTokens as $originalPosition => $originalToken) {
            $sortedPosition = $sortedPositions[$sortedIndex++];
            $sortedToken = $sortedTokens[$sortedPosition];

            // We don't need an error if the "type block" is the same, so check the code additionally.
            if (($sortedPosition !== $originalPosition) && ($originalToken['code'] !== $sortedToken['code'])) {
                $this->file->addError(
                    self::MESSAGE_WRONG_POSITION,
                    $originalPosition,
                    self::CODE_WRONG_POSITION,
                    [
                        $sortedToken['type'],
                        $sortedToken['content']
                    ]
                );
            }
        }
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			namespace BestIt\Sniffs\Formatting;
6
7			use BestIt\CodeSniffer\Helper\PropertyHelper;
8			use BestIt\Sniffs\AbstractSniff;
9			use BestIt\Sniffs\ClassRegistrationTrait;
10			use SlevomatCodingStandard\Helpers\TokenHelper;
11			use SlevomatCodingStandard\Helpers\UseStatementHelper;
12			use function array_combine;
13			use function array_filter;
14			use function array_keys;
15			use function array_map;
16			use function array_search;
17			use function uasort;
18			use const T_CONST;
19			use const T_FUNCTION;
20			use const T_USE;
21			use const T_VARIABLE;
22
23			/**
24			* Checks the sorting of the contents of a class (T_USE > T_CONST > T_VARIABLE > T_FUNCTION).
25			*
26			* @author blange <[email protected]>
27			* @package BestIt\Sniffs\Formatting
28			*/
29			class UCVFSortingSniff extends AbstractSniff
30			{
31			use ClassRegistrationTrait;
32
33			/**
34			* Error code for the wrong position of a structure.
35			*
36			* @var string
37			*/
38			public const CODE_WRONG_POSITION = 'WrongPosition';
39
40			/**
41			* The error message of a structure is at the wrong position.
42			*
43			* @var string
44			*/
45			private const MESSAGE_WRONG_POSITION = 'Your php structure is at a wrong position. ' .
46			'The sorting order is: T_USE, T_CONST, T_VARIABLE, T_FUNCTION. We expect a %s (%s).';
47
48			/**
49			* The tokens which are checked in the correct sorting order.
50			*
51			* @var array
52			*/
53			private $sortedTokens = [
54			T_USE,
55			T_CONST,
56			T_VARIABLE,
57			T_FUNCTION
58			];
59
60			/**
61			* Loads the positons for the tokens of $this->>sortedTokens.
62			*
63			* @return int[]
64			*/
65			private function loadSubTokenPositions(): array
66			{
67			return TokenHelper::findNextAll(
68			$this->file->getBaseFile(),
69			$this->sortedTokens,
70			$this->stackPos,
71			$this->token['scope_closer']
72			);
73			}
74
75			/**
76			* Loads all sub tokens.
77			*
78			* @return array
79			*/
80			private function loadSubTokens(): array
81			{
82			$subTokens = $this->loadTokensForPositions($this->loadSubTokenPositions());
83
84			return $this->removeUnwantedTokens($subTokens);
85			}
86
87			/**
88			* Loads the tokens for the positions.
89			*
90			* @param array $subTokenPoss
91			*
92			* @return array
93			*/
94			private function loadTokensForPositions(array $subTokenPoss): array
95			{
96			$subTokens = array_map(function (int $position): array {
97			return $this->tokens[$position];
98			}, $subTokenPoss);
99
100			return array_combine($subTokenPoss, $subTokens);
101			}
102
103			/**
104			* Processes the token.
105			*
106			* @return void
107			*/
108			protected function processToken(): void
109			{
110			$subTokens = $this->loadSubTokens();
111			$sortedTokens = $this->sortTokens($subTokens);
112
113			$this->validateSorting($subTokens, $sortedTokens);
114			}
115
116			/**
117			* Removes inline vars and uses for anon-functions.
118			*
119			* @param array $subTokens
120			*
121			* @return array
122			*/
123			private function removeUnwantedTokens(array $subTokens): array
124			{
125			return array_filter($subTokens, function (array $subToken): bool {
126			switch ($subToken['code']) {
127			case T_VARIABLE:
128			$return = (new PropertyHelper($this->file))->isProperty($subToken['pointer']);
			0 ignored issues – show Bug introduced 2018-12-30 21:27 UTC by Report Bug Copy Issue Report It seems like `$this->file` can be `null`; however, `__construct()` does not accept `null`, maybe add an additional type check? Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: /** @return stdClass\|null */ function mayReturnNull() { } function doesNotAcceptNull(stdClass $x) { } // With potential error. function withoutCheck() { $x = mayReturnNull(); doesNotAcceptNull($x); // Potential error here. } // Safe - Alternative 1 function withCheck1() { $x = mayReturnNull(); if ( ! $x instanceof stdClass) { throw new \LogicException('$x must be defined.'); } doesNotAcceptNull($x); } // Safe - Alternative 2 function withCheck2() { $x = mayReturnNull(); if ($x instanceof stdClass) { doesNotAcceptNull($x); } } Loading history...
129			break;
130
131			case T_USE:
132			$return = UseStatementHelper::isTraitUse($this->file, $subToken['pointer']);
			0 ignored issues – show Bug introduced 2018-12-30 21:27 UTC by Report Bug Copy Issue Report It seems like `$this->file` can be `null`; however, `isTraitUse()` does not accept `null`, maybe add an additional type check? Unless you are absolutely sure that the expression can never be null because of other conditions, we strongly recommend to add an additional type check to your code: /** @return stdClass\|null */ function mayReturnNull() { } function doesNotAcceptNull(stdClass $x) { } // With potential error. function withoutCheck() { $x = mayReturnNull(); doesNotAcceptNull($x); // Potential error here. } // Safe - Alternative 1 function withCheck1() { $x = mayReturnNull(); if ( ! $x instanceof stdClass) { throw new \LogicException('$x must be defined.'); } doesNotAcceptNull($x); } // Safe - Alternative 2 function withCheck2() { $x = mayReturnNull(); if ($x instanceof stdClass) { doesNotAcceptNull($x); } } Loading history...
133			break;
134
135			default:
136			$return = true;
137			}
138
139			return $return;
140			});
141			}
142
143			/**
144			* This sniff needs the pointer marker so add it to the tokens.
145			*
146			* @return void
147			*/
148			protected function setUp(): void
149			{
150			parent::setUp();
151
152			$this->addPointerToTokens();
153			}
154
155			/**
156			* Sorts the tokens as required by $this->sortingTokens.
157			*
158			* @param array $subTokens
159			*
160			* @return array
161			*/
162			private function sortTokens(array $subTokens): array
163			{
164			uasort($subTokens, function (array $leftToken, array $rightToken): int {
165			// Don't change the structure by default.
166			$return = $leftToken['line'] <=> $rightToken['line'];
167
168			// Sort by type
169			if ($leftToken['code'] != $rightToken['code']) {
170			$leftIndex = array_search($leftToken['code'], $this->sortedTokens);
171			$rightIndex = array_search($rightToken['code'], $this->sortedTokens);
172
173			$return = $leftIndex <=> $rightIndex;
174			}
175
176			return $return;
177			});
178
179			return $subTokens;
180			}
181
182			/**
183			* Validates the sorting of the tokens and registers an error if wrong sorted.
184			*
185			* @param array $originalTokens
186			* @param array $sortedTokens
187			*
188			* @return void
189			*/
190			private function validateSorting(array $originalTokens, array $sortedTokens): void
191			{
192			$sortedPositions = array_keys($sortedTokens);
193			$sortedIndex = 0;
194
195			foreach ($originalTokens as $originalPosition => $originalToken) {
196			$sortedPosition = $sortedPositions[$sortedIndex++];
197			$sortedToken = $sortedTokens[$sortedPosition];
198
199			// We don't need an error if the "type block" is the same, so check the code additionally.
200			if (($sortedPosition !== $originalPosition) && ($originalToken['code'] !== $sortedToken['code'])) {
201			$this->file->addError(
202			self::MESSAGE_WRONG_POSITION,
203			$originalPosition,
204			self::CODE_WRONG_POSITION,
205			[
206			$sortedToken['type'],
207			$sortedToken['content']
208			]
209			);
210			}
211			}
212			}
213			}
214

bestit / PHP_CodeSniffer

Push — master ( 239abe...00bc3e )

UCVFSortingSniff::loadSubTokens() A

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