FunctionCommentSniff::processThrows() - Code Metrics - Inspection of "Sniff exclude patters were matched from the middle..." - aik099/CodingStandard - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 19acc1...0f65c5 )

by Alexander

created 2019-02-06 07:12 UTC

FunctionCommentSniff::processThrows() C

↳ Parent: FunctionCommentSniff

Complexity

Conditions	13
Paths	21

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	29
CRAP Score	13

Importance

Changes

Metric	Value
cc	13
nc	21
nop	3
dl	0
loc	52
ccs	29
cts	29
cp	1
crap	13
rs	6.6166
c	0
b	0
f	0

How to fix Long Method Complexity

<?php
/**
 * CodingStandard_Sniffs_Commenting_FunctionCommentSniff.
 *
 * PHP version 5
 *
 * @category PHP
 * @package  PHP_CodeSniffer
 * @author   Greg Sherwood <[email protected]>
 * @author   Alexander Obuhovich <[email protected]>
 * @license  https://github.com/aik099/CodingStandard/blob/master/LICENSE BSD 3-Clause
 * @link     https://github.com/aik099/CodingStandard
 */

namespace CodingStandard\Sniffs\Commenting;

use PHP_CodeSniffer\Files\File;
use PHP_CodeSniffer\Standards\Squiz\Sniffs\Commenting\FunctionCommentSniff as Squiz_FunctionCommentSniff;
use PHP_CodeSniffer\Util\Tokens;

/**
 * Parses and verifies the doc comments for functions.
 *
 * Same as the Squiz standard, but adds support for API tags.
 *
 * @category PHP
 * @package  PHP_CodeSniffer
 * @author   Greg Sherwood <[email protected]>
 * @author   Alexander Obuhovich <[email protected]>
 * @license  https://github.com/aik099/CodingStandard/blob/master/LICENSE BSD 3-Clause
 * @link     https://github.com/aik099/CodingStandard
 */
class FunctionCommentSniff extends Squiz_FunctionCommentSniff
{


    /**
     * Processes this test, when one of its tokens is encountered.
     *
     * @param File $phpcsFile The file being scanned.
     * @param int  $stackPtr  The position of the current token in the
     *                        stack passed in $tokens.
     *
     * @return void
     */
    public function process(File $phpcsFile, $stackPtr)
    {
        parent::process($phpcsFile, $stackPtr);

        $tokens = $phpcsFile->getTokens();
        $find   = Tokens::$methodPrefixes;
        $find[] = T_WHITESPACE;

        $commentEnd = $phpcsFile->findPrevious($find, ($stackPtr - 1), null, true);
        if ($tokens[$commentEnd]['code'] !== T_DOC_COMMENT_CLOSE_TAG) {
            return;
        }

        $commentStart = $tokens[$commentEnd]['comment_opener'];

        $empty = array(
                  T_DOC_COMMENT_WHITESPACE,
                  T_DOC_COMMENT_STAR,
                 );

        $short = $phpcsFile->findNext($empty, ($commentStart + 1), $commentEnd, true);
/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}
        if ($short === false || $tokens[$short]['code'] !== T_DOC_COMMENT_STRING) {
            return;
        }

        if ($this->isInheritDoc($phpcsFile, $commentStart) === true) {
            return;
        }

        $this->checkShort($phpcsFile, $stackPtr, $tokens[$short]['content'], $short);
    }//end process()

    /**
     * Process the function parameter comments.
     *
     * @param File $phpcsFile    The file being scanned.
     * @param int  $stackPtr     The position of the current token
     *                           in the stack passed in $tokens.
     * @param int  $commentStart The position in the stack where the comment started.
     *
     * @return void
     */
    protected function processParams(File $phpcsFile, $stackPtr, $commentStart)
    {
        if ($this->isInheritDoc($phpcsFile, $commentStart) === true) {
            return;
        }

        parent::processParams($phpcsFile, $stackPtr, $commentStart);
    }//end processParams()


    /**
     * Process the return comment of this function comment.
     *
     * @param File $phpcsFile    The file being scanned.
     * @param int  $stackPtr     The position of the current token
     *                           in the stack passed in $tokens.
     * @param int  $commentStart The position in the stack where the comment started.
     *
     * @return void
     */
    protected function processReturn(File $phpcsFile, $stackPtr, $commentStart)
    {
        if ($this->isInheritDoc($phpcsFile, $commentStart) === true) {
            return;
        }

        parent::processReturn($phpcsFile, $stackPtr, $commentStart);

        $return = null;
        $tokens = $phpcsFile->getTokens();

        foreach ($tokens[$commentStart]['comment_tags'] as $tag) {
            if ($tokens[$tag]['content'] === '@return') {
                $return = $tag;
                break;
            }
        }

        if ($return !== null) {
            $returnType = $tokens[($return + 2)]['content'];
            if ($returnType === '$this') {
                $error = 'Function return type "%s" is invalid, please use "static" or "self" instead';
                $data  = array($returnType);
                $phpcsFile->addError($error, $return, 'InvalidThisReturn', $data);
            }
        }
    }//end processReturn()

    /**
     * Process the short description of a function comment.
     *
     * @param File   $phpcsFile The file being scanned.
     * @param int    $stackPtr  The position of the function token
     *                          in the stack passed in $tokens.
     * @param string $short     The content of the short description.
     * @param int    $errorPos  The position where an error should be thrown.
     *
     * @return void
     */
    public function checkShort(File $phpcsFile, $stackPtr, $short, $errorPos)
    {
        $tokens = $phpcsFile->getTokens();

        $classToken = null;
        foreach ($tokens[$stackPtr]['conditions'] as $condPtr => $condition) {
            if ($condition === T_CLASS || $condition === T_INTERFACE || $condition === T_TRAIT) {
                $classToken = $condPtr;
                break;
            }
        }

        $isEvent = false;
        if ($classToken !== null) {
            $className = $phpcsFile->getDeclarationName($classToken);
            if (strpos($className, 'EventHandler') !== false) {
                $methodName = $phpcsFile->getDeclarationName($stackPtr);
                if (substr($methodName, 0, 2) === 'On') {
                    $isEvent = true;
                }
            }
        }

        if ($isEvent === true && preg_match('/(\p{Lu}|\[)/u', $short[0]) === 0) {
            $error = 'Event comment short description must start with a capital letter or an [';
            $phpcsFile->addError($error, $errorPos, 'EventShortNotCapital');
        } elseif ($isEvent === false && preg_match('/\p{Lu}/u', $short[0]) === 0) {
            $error = 'Doc comment short description must start with a capital letter';
            $phpcsFile->addError($error, $errorPos, 'NonEventShortNotCapital');
        }
    }//end checkShort()


    /**
     * Process any throw tags that this function comment has.
     *
     * @param File $phpcsFile    The file being scanned.
     * @param int  $stackPtr     The position of the current token
     *                           in the stack passed in $tokens.
     * @param int  $commentStart The position in the stack where the comment started.
     *
     * @return void
     */
    protected function processThrows(File $phpcsFile, $stackPtr, $commentStart)
    {
        parent::processThrows($phpcsFile, $stackPtr, $commentStart);

        $tokens = $phpcsFile->getTokens();

        foreach ($tokens[$commentStart]['comment_tags'] as $tag) {
            // Only process method with scope (e.g. non-abstract methods or methods on the interface).
            if ($tokens[$tag]['content'] !== '@throws' || isset($tokens[$stackPtr]['scope_opener']) === false) {
                continue;
            }

            $throwPtr = $phpcsFile->findNext(
                T_THROW,
                $tokens[$stackPtr]['scope_opener'],
                $tokens[$stackPtr]['scope_closer']
            );

            if ($throwPtr !== false) {
                break;
            }

            $throwsWithString = null;
            $error            = '@throws tag found, but no exceptions are thrown by the function';

            if ($tokens[($tag + 2)]['code'] === T_DOC_COMMENT_STRING) {
                $throwsWithString = true;
            } elseif ($tokens[($tag + 1)]['code'] === T_DOC_COMMENT_WHITESPACE
                && $tokens[($tag + 1)]['content'] === $phpcsFile->eolChar
            ) {
                $throwsWithString = false;
            }

            if ($tokens[($tag - 2)]['code'] === T_DOC_COMMENT_STAR && isset($throwsWithString) === true) {
                $fix = $phpcsFile->addFixableError($error, $tag, 'ExcessiveThrows');

                if ($fix === true) {
                    $phpcsFile->fixer->beginChangeset();

                    $removeEndPtr = $throwsWithString === true ? ($tag + 3) : ($tag + 1);

                    for ($i = ($tag - 4); $i < $removeEndPtr; $i++) {
                        $phpcsFile->fixer->replaceToken($i, '');
                    }

                    $phpcsFile->fixer->endChangeset();
                }
            } else {
                $phpcsFile->addError($error, $tag, 'ExcessiveThrows');
            }
        }//end foreach
    }//end processThrows()


    /**
     * Is the comment an inheritdoc?
     *
     * @param File $phpcsFile    The file being scanned.
     * @param int  $commentStart The position in the stack where the comment started.
     *
     * @return bool
     */
    protected function isInheritDoc(File $phpcsFile, $commentStart)
    {
        $tokens = $phpcsFile->getTokens();

        $commentEnd  = $tokens[$commentStart]['comment_closer'];
        $commentText = $phpcsFile->getTokensAsString($commentStart, ($commentEnd - $commentStart + 1));

        return stripos($commentText, '{@inheritdoc}') !== false;
    }// end isInheritDoc()
}//end class


1		<?php
2		/**
3		* CodingStandard_Sniffs_Commenting_FunctionCommentSniff.
4		*
5		* PHP version 5
6		*
7		* @category PHP
8		* @package PHP_CodeSniffer
9		* @author Greg Sherwood <[email protected]>
10		* @author Alexander Obuhovich <[email protected]>
11		* @license https://github.com/aik099/CodingStandard/blob/master/LICENSE BSD 3-Clause
12		* @link https://github.com/aik099/CodingStandard
13		*/
14
15		namespace CodingStandard\Sniffs\Commenting;
16
17		use PHP_CodeSniffer\Files\File;
18		use PHP_CodeSniffer\Standards\Squiz\Sniffs\Commenting\FunctionCommentSniff as Squiz_FunctionCommentSniff;
19		use PHP_CodeSniffer\Util\Tokens;
20
21		/**
22		* Parses and verifies the doc comments for functions.
23		*
24		* Same as the Squiz standard, but adds support for API tags.
25		*
26		* @category PHP
27		* @package PHP_CodeSniffer
28		* @author Greg Sherwood <[email protected]>
29		* @author Alexander Obuhovich <[email protected]>
30		* @license https://github.com/aik099/CodingStandard/blob/master/LICENSE BSD 3-Clause
31		* @link https://github.com/aik099/CodingStandard
32		*/
33		class FunctionCommentSniff extends Squiz_FunctionCommentSniff
34		{
35
36
37		/**
38		* Processes this test, when one of its tokens is encountered.
39		*
40		* @param File $phpcsFile The file being scanned.
41		* @param int $stackPtr The position of the current token in the
42		* stack passed in $tokens.
43		*
44		* @return void
45		*/
46	1	public function process(File $phpcsFile, $stackPtr)
47		{
48	1	parent::process($phpcsFile, $stackPtr);
49
50	1	$tokens = $phpcsFile->getTokens();
51	1	$find = Tokens::$methodPrefixes;
52	1	$find[] = T_WHITESPACE;
53
54	1	$commentEnd = $phpcsFile->findPrevious($find, ($stackPtr - 1), null, true);
55	1	if ($tokens[$commentEnd]['code'] !== T_DOC_COMMENT_CLOSE_TAG) {
56	1	return;
57		}
58
59	1	$commentStart = $tokens[$commentEnd]['comment_opener'];
60
61		$empty = array(
62	1	T_DOC_COMMENT_WHITESPACE,
63	1	T_DOC_COMMENT_STAR,
64		);
65
66	1	$short = $phpcsFile->findNext($empty, ($commentStart + 1), $commentEnd, true);
		0 ignored issues – show Bug introduced 2018-12-09 10:33 UTC by Report Bug Copy Issue Report It seems like `$commentEnd` defined by `$phpcsFile->findPrevious...ackPtr - 1, null, true)` on line `54` can also be of type `boolean`; however, `PHP_CodeSniffer\Files\File::findNext()` does only seem to accept `integer\|null`, maybe add an additional type check? If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check: /** * @return array\|string */ function returnsDifferentValues($x) { if ($x) { return 'foo'; } return array(); } $x = returnsDifferentValues($y); if (is_array($x)) { // $x is an array. } If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue. Loading history...
67	1	if ($short === false \|\| $tokens[$short]['code'] !== T_DOC_COMMENT_STRING) {
68	1	return;
69		}
70
71	1	if ($this->isInheritDoc($phpcsFile, $commentStart) === true) {
72	1	return;
73		}
74
75	1	$this->checkShort($phpcsFile, $stackPtr, $tokens[$short]['content'], $short);
76	1	}//end process()
77
78		/**
79		* Process the function parameter comments.
80		*
81		* @param File $phpcsFile The file being scanned.
82		* @param int $stackPtr The position of the current token
83		* in the stack passed in $tokens.
84		* @param int $commentStart The position in the stack where the comment started.
85		*
86		* @return void
87		*/
88	1	protected function processParams(File $phpcsFile, $stackPtr, $commentStart)
89		{
90	1	if ($this->isInheritDoc($phpcsFile, $commentStart) === true) {
91	1	return;
92		}
93
94	1	parent::processParams($phpcsFile, $stackPtr, $commentStart);
95	1	}//end processParams()
96
97
98		/**
99		* Process the return comment of this function comment.
100		*
101		* @param File $phpcsFile The file being scanned.
102		* @param int $stackPtr The position of the current token
103		* in the stack passed in $tokens.
104		* @param int $commentStart The position in the stack where the comment started.
105		*
106		* @return void
107		*/
108	1	protected function processReturn(File $phpcsFile, $stackPtr, $commentStart)
109		{
110	1	if ($this->isInheritDoc($phpcsFile, $commentStart) === true) {
111	1	return;
112		}
113
114	1	parent::processReturn($phpcsFile, $stackPtr, $commentStart);
115
116	1	$return = null;
117	1	$tokens = $phpcsFile->getTokens();
118
119	1	foreach ($tokens[$commentStart]['comment_tags'] as $tag) {
120	1	if ($tokens[$tag]['content'] === '@return') {
121	1	$return = $tag;
122	1	break;
123		}
124		}
125
126	1	if ($return !== null) {
127	1	$returnType = $tokens[($return + 2)]['content'];
128	1	if ($returnType === '$this') {
129	1	$error = 'Function return type "%s" is invalid, please use "static" or "self" instead';
130	1	$data = array($returnType);
131	1	$phpcsFile->addError($error, $return, 'InvalidThisReturn', $data);
132		}
133		}
134	1	}//end processReturn()
135
136		/**
137		* Process the short description of a function comment.
138		*
139		* @param File $phpcsFile The file being scanned.
140		* @param int $stackPtr The position of the function token
141		* in the stack passed in $tokens.
142		* @param string $short The content of the short description.
143		* @param int $errorPos The position where an error should be thrown.
144		*
145		* @return void
146		*/
147	1	public function checkShort(File $phpcsFile, $stackPtr, $short, $errorPos)
148		{
149	1	$tokens = $phpcsFile->getTokens();
150
151	1	$classToken = null;
152	1	foreach ($tokens[$stackPtr]['conditions'] as $condPtr => $condition) {
153	1	if ($condition === T_CLASS \|\| $condition === T_INTERFACE \|\| $condition === T_TRAIT) {
154	1	$classToken = $condPtr;
155	1	break;
156		}
157		}
158
159	1	$isEvent = false;
160	1	if ($classToken !== null) {
161	1	$className = $phpcsFile->getDeclarationName($classToken);
162	1	if (strpos($className, 'EventHandler') !== false) {
163	1	$methodName = $phpcsFile->getDeclarationName($stackPtr);
164	1	if (substr($methodName, 0, 2) === 'On') {
165	1	$isEvent = true;
166		}
167		}
168		}
169
170	1	if ($isEvent === true && preg_match('/(\p{Lu}\|\[)/u', $short[0]) === 0) {
171	1	$error = 'Event comment short description must start with a capital letter or an [';
172	1	$phpcsFile->addError($error, $errorPos, 'EventShortNotCapital');
173	1	} elseif ($isEvent === false && preg_match('/\p{Lu}/u', $short[0]) === 0) {
174	1	$error = 'Doc comment short description must start with a capital letter';
175	1	$phpcsFile->addError($error, $errorPos, 'NonEventShortNotCapital');
176		}
177	1	}//end checkShort()
178
179
180		/**
181		* Process any throw tags that this function comment has.
182		*
183		* @param File $phpcsFile The file being scanned.
184		* @param int $stackPtr The position of the current token
185		* in the stack passed in $tokens.
186		* @param int $commentStart The position in the stack where the comment started.
187		*
188		* @return void
189		*/
190	1	protected function processThrows(File $phpcsFile, $stackPtr, $commentStart)
191		{
192	1	parent::processThrows($phpcsFile, $stackPtr, $commentStart);
193
194	1	$tokens = $phpcsFile->getTokens();
195
196	1	foreach ($tokens[$commentStart]['comment_tags'] as $tag) {
197		// Only process method with scope (e.g. non-abstract methods or methods on the interface).
198	1	if ($tokens[$tag]['content'] !== '@throws' \|\| isset($tokens[$stackPtr]['scope_opener']) === false) {
199	1	continue;
200		}
201
202	1	$throwPtr = $phpcsFile->findNext(
203	1	T_THROW,
204	1	$tokens[$stackPtr]['scope_opener'],
205	1	$tokens[$stackPtr]['scope_closer']
206		);
207
208	1	if ($throwPtr !== false) {
209	1	break;
210		}
211
212	1	$throwsWithString = null;
213	1	$error = '@throws tag found, but no exceptions are thrown by the function';
214
215	1	if ($tokens[($tag + 2)]['code'] === T_DOC_COMMENT_STRING) {
216	1	$throwsWithString = true;
217	1	} elseif ($tokens[($tag + 1)]['code'] === T_DOC_COMMENT_WHITESPACE
218	1	&& $tokens[($tag + 1)]['content'] === $phpcsFile->eolChar
219		) {
220	1	$throwsWithString = false;
221		}
222
223	1	if ($tokens[($tag - 2)]['code'] === T_DOC_COMMENT_STAR && isset($throwsWithString) === true) {
224	1	$fix = $phpcsFile->addFixableError($error, $tag, 'ExcessiveThrows');
225
226	1	if ($fix === true) {
227	1	$phpcsFile->fixer->beginChangeset();
228
229	1	$removeEndPtr = $throwsWithString === true ? ($tag + 3) : ($tag + 1);
230
231	1	for ($i = ($tag - 4); $i < $removeEndPtr; $i++) {
232	1	$phpcsFile->fixer->replaceToken($i, '');
233		}
234
235	1	$phpcsFile->fixer->endChangeset();
236		}
237		} else {
238	1	$phpcsFile->addError($error, $tag, 'ExcessiveThrows');
239		}
240		}//end foreach
241	1	}//end processThrows()
242
243
244		/**
245		* Is the comment an inheritdoc?
246		*
247		* @param File $phpcsFile The file being scanned.
248		* @param int $commentStart The position in the stack where the comment started.
249		*
250		* @return bool
251		*/
252	1	protected function isInheritDoc(File $phpcsFile, $commentStart)
253		{
254	1	$tokens = $phpcsFile->getTokens();
255
256	1	$commentEnd = $tokens[$commentStart]['comment_closer'];
257	1	$commentText = $phpcsFile->getTokensAsString($commentStart, ($commentEnd - $commentStart + 1));
258
259	1	return stripos($commentText, '{@inheritdoc}') !== false;
260		}// end isInheritDoc()
261		}//end class
262

aik099 / CodingStandard

Push — master ( 19acc1...0f65c5 )

FunctionCommentSniff::processThrows() C

Complexity

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Duplication

Code Coverage

Importance

How to fix Long Method Complexity

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