MethodPattern::__invoke() - Code Metrics - funivan/PhpTokenizer - Measure and Improve Code Quality continuously with Scrutinizer

MethodPattern::__invoke() D
last analyzed 2018-06-11 08:59 UTC

↳ Parent: MethodPattern

Complexity

Conditions	18
Paths	41

Size

Total Lines	109
Code Lines	61

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	54
CRAP Score	18.0147

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
dl	0
loc	109
ccs	54
cts	56
cp	0.9643
rs	4.7996
c	1
b	0
f	0
cc	18
eloc	61
nc	41
nop	1
crap	18.0147

How to fix Long Method Complexity

<?php

  declare(strict_types=1);

  namespace Funivan\PhpTokenizer\Pattern\Patterns;

  use Funivan\PhpTokenizer\Collection;
  use Funivan\PhpTokenizer\Pattern\PatternMatcher;
  use Funivan\PhpTokenizer\QuerySequence\QuerySequence;
  use Funivan\PhpTokenizer\Strategy\QueryStrategy;
  use Funivan\PhpTokenizer\Strategy\Strict;
  use Funivan\PhpTokenizer\Token;

  /**
   * Find method in code
   */
  class MethodPattern implements PatternInterface {

    const OUTPUT_BODY = 0;

    const OUTPUT_FULL = 1;

    const OUTPUT_DOC_COMMENT = 2;


    /**
     * @var QueryStrategy
     */
    private $nameQuery;

    /**
     * @var callable[]
     */
    private $modifierChecker = [];

    /**
     * @var callable
     */
    private $bodyChecker;

    /**
     * @var callable
     */
    private $docCommentChecker;

    /**
     * @var int
     */
    private $outputType = self::OUTPUT_BODY;

    /**
     * @var ParametersPattern
     */
    private $argumentsPattern;


    /**
     *
     */
    public function __construct() {
      $this->withName(Strict::create()->valueLike('!.+!'));
      $this->withAnyModifier();

      /** @noinspection PhpUnusedParameterInspection */
      $this->withBody(function (Collection $body) {
        return true;
      });

      /** @noinspection PhpUnusedParameterInspection */
      $this->withDocComment(function (Token $token) {
        return true;
      });

    }


    /**
     * @return $this
     */
    public function outputFull() : self {
      $this->outputType = self::OUTPUT_FULL;
      return $this;
    }


    /**
     * @return $this
     */
    public function outputBody() : self {
      $this->outputType = self::OUTPUT_BODY;
      return $this;
    }


    /**
     * @return $this
     */
    public function outputDocComment() : self {
      $this->outputType = self::OUTPUT_DOC_COMMENT;
      return $this;
    }


    /**
     * @param string|QueryStrategy $name
     * @return $this
     */
    public function withName($name) : self {
      if (is_string($name)) {
        $this->nameQuery = Strict::create()->valueIs($name);
      } elseif ($name instanceof QueryStrategy) {
        $this->nameQuery = $name;
      } else {
        throw new \InvalidArgumentException('Invalid name format. Expect string or Query');
      }

      return $this;
    }


    /**
     * @param callable $check
     * @return $this
     */
    public function withBody(callable $check) : self {
      $this->bodyChecker = $check;
      return $this;
    }


    /**
     * @param Collection $body
     * @return bool
     * @throws \Exception
     */
    private function isValidBody(Collection $body) : bool {
      $checker = $this->bodyChecker;
      return $checker($body);
    }


    /**
     * @param callable $check
     * @return $this
     */
    public function withDocComment(callable $check = null) : self {

      if ($check === null) {
        $check = function (Token $token) {
          return $token->getType() === T_DOC_COMMENT;
        };
      }
      $this->docCommentChecker = $check;

      return $this;
    }


    /**
     * Find functions without doc comments
     */
    public function withoutDocComment() : self {
      $this->docCommentChecker = function (Token $token) {
        return $token->isValid() === false;
      };

      return $this;
    }


    /**
     * @param ParametersPattern $pattern
     * @return $this
     */
    public function withParameters(ParametersPattern $pattern) : self {
      $this->argumentsPattern = $pattern;
      return $this;
    }


    /**
     * @return $this
     */
    public function withAnyModifier() : self {
      $this->modifierChecker = [];
      $this->modifierChecker[] = function () {
        return true;
      };
      return $this;
    }


    /**
     * @param string $modifier
     * @return $this
     */
    public function withModifier(string $modifier) : self {
      $this->modifierChecker[] = function ($allModifiers) use ($modifier) {
        return in_array($modifier, $allModifiers);
      };

      return $this;
    }


    /**
     * @param string $modifier
     * @return $this
     */
    public function withoutModifier(string $modifier) : self {

      $this->modifierChecker[] = function ($allModifiers) use ($modifier) {
        return !in_array($modifier, $allModifiers);
      };

      return $this;
    }


    /**
     * @param string[] $modifiers
     * @return bool
     * @throws \Exception
     */
    private function isValidModifiers(array $modifiers) : bool {
      foreach ($this->modifierChecker as $checkModifier) {
        $result = $checkModifier($modifiers);

        if (!is_bool($result)) {
          throw new \Exception('Modifier checker should return boolean result');
        }
        if ($result === false) {
          return false;
        }
      }

      return true;
    }


    /**
     * @param QuerySequence $querySequence
     * @return Collection|null
     */
    public function __invoke(QuerySequence $querySequence) {
      static $availableModifiers = [
        T_STATIC,
        T_PRIVATE,
        T_PUBLIC,
        T_ABSTRACT,
        T_FINAL,
      ];


      # detect function
      $functionKeyword = $querySequence->strict('function');
      $querySequence->strict(T_WHITESPACE);
      $querySequence->process($this->nameQuery);
      $arguments = $querySequence->section('(', ')');
      $querySequence->possible(T_WHITESPACE);
      $body = $querySequence->section('{', '}');

      if (!$querySequence->isValid()) {
        return null;
      }

      $collection = $querySequence->getCollection();
      $first = $collection->getFirst();
      if ($first === null) {
        return null;
      }

      $start = $collection->extractByTokens($first, $functionKeyword);
      $start->slice(0, -1);  // remove last function keyword

      # start reverse search
      $items = array_reverse($start->getTokens());
      $startFrom = null;

      $docComment = new Token();

      $modifiers = [];


      /** @var Token[] $items */
      foreach ($items as $item) {

        if ($item->getType() === T_WHITESPACE) {
          $startFrom = $item;
          continue;
        }

        if ($item->getType() === T_DOC_COMMENT and $docComment->isValid() === false) {
          # Detect only first doc comment
          $startFrom = $item;
          $docComment = $item;
          continue;
        }


        if (in_array($item->getType(), $availableModifiers)) {
          $startFrom = $item;
          $modifiers[] = $item->getValue();
          continue;
        }

        break;
      }

      if ($this->isValidModifiers($modifiers) === false) {
        return null;
      }

      if ($this->isValidBody($body) === false) {
        return null;
      }

      if ($this->isValidDocComment($docComment) === false) {
        return null;
      }

      if ($this->isValidArguments($arguments) === false) {
        return null;
      }

      $lastToken = $body->getLast();
      if ($lastToken === null) {
        return null;
      }

      if ($startFrom === null) {
        $startFrom = $functionKeyword;
      }


      if ($this->outputType === self::OUTPUT_FULL) {
        # all conditions are ok, so extract full function
        $fullFunction = $collection->extractByTokens($startFrom, $lastToken);
        $firstToken = $fullFunction->getFirst();
        if ($firstToken !== null and $firstToken->getType() === T_WHITESPACE) {
          $fullFunction->slice(1);
        }
        return $fullFunction;
      }

      if ($this->outputType === self::OUTPUT_DOC_COMMENT) {
        return new Collection([$docComment]);
      }

      # body by default
      $body->slice(0, -1);
      return $body;
    }


    /**
     * @param Token $token
     * @return boolean
     * @throws \Exception
     */
    private function isValidDocComment(Token $token) : bool {
      $checker = $this->docCommentChecker;
      return $checker($token);
    }


    /**
     * @param Collection $parameters
     * @return bool
     */
    private function isValidArguments(Collection $parameters) : bool {
      if ($this->argumentsPattern === null) {
        return true;
      }

      $pattern = (new PatternMatcher($parameters))->apply($this->argumentsPattern);

      return (count($pattern->getCollections()) !== 0);
    }


  }

1		<?php
2
3		declare(strict_types=1);
4
5		namespace Funivan\PhpTokenizer\Pattern\Patterns;
6
7		use Funivan\PhpTokenizer\Collection;
8		use Funivan\PhpTokenizer\Pattern\PatternMatcher;
9		use Funivan\PhpTokenizer\QuerySequence\QuerySequence;
10		use Funivan\PhpTokenizer\Strategy\QueryStrategy;
11		use Funivan\PhpTokenizer\Strategy\Strict;
12		use Funivan\PhpTokenizer\Token;
13
14		/**
15		* Find method in code
16		*/
17		class MethodPattern implements PatternInterface {
18
19		const OUTPUT_BODY = 0;
20
21		const OUTPUT_FULL = 1;
22
23		const OUTPUT_DOC_COMMENT = 2;
24
25
26		/**
27		* @var QueryStrategy
28		*/
29		private $nameQuery;
30
31		/**
32		* @var callable[]
33		*/
34		private $modifierChecker = [];
35
36		/**
37		* @var callable
38		*/
39		private $bodyChecker;
40
41		/**
42		* @var callable
43		*/
44		private $docCommentChecker;
45
46		/**
47		* @var int
48		*/
49		private $outputType = self::OUTPUT_BODY;
50
51		/**
52		* @var ParametersPattern
53		*/
54		private $argumentsPattern;
55
56
57		/**
58		*
59		*/
60	27	public function __construct() {
61	27	$this->withName(Strict::create()->valueLike('!.+!'));
62	27	$this->withAnyModifier();
63
64		/** @noinspection PhpUnusedParameterInspection */
65		$this->withBody(function (Collection $body) {
66	24	return true;
67	27	});
68
69		/** @noinspection PhpUnusedParameterInspection */
70		$this->withDocComment(function (Token $token) {
71	24	return true;
72	27	});
73
74	27	}
75
76
77		/**
78		* @return $this
79		*/
80	3	public function outputFull() : self {
81	3	$this->outputType = self::OUTPUT_FULL;
82	3	return $this;
83		}
84
85
86		/**
87		* @return $this
88		*/
89	3	public function outputBody() : self {
90	3	$this->outputType = self::OUTPUT_BODY;
91	3	return $this;
92		}
93
94
95		/**
96		* @return $this
97		*/
98	3	public function outputDocComment() : self {
99	3	$this->outputType = self::OUTPUT_DOC_COMMENT;
100	3	return $this;
101		}
102
103
104		/**
105		* @param string\|QueryStrategy $name
106		* @return $this
107		*/
108	27	public function withName($name) : self {
109	27	if (is_string($name)) {
110	3	$this->nameQuery = Strict::create()->valueIs($name);
111	27	} elseif ($name instanceof QueryStrategy) {
112	27	$this->nameQuery = $name;
113		} else {
114	3	throw new \InvalidArgumentException('Invalid name format. Expect string or Query');
115		}
116
117	27	return $this;
118		}
119
120
121		/**
122		* @param callable $check
123		* @return $this
124		*/
125	27	public function withBody(callable $check) : self {
126	27	$this->bodyChecker = $check;
127	27	return $this;
128		}
129
130
131		/**
132		* @param Collection $body
133		* @return bool
134		* @throws \Exception
135		*/
136	24	private function isValidBody(Collection $body) : bool {
137	24	$checker = $this->bodyChecker;
138	24	return $checker($body);
139		}
140
141
142		/**
143		* @param callable $check
144		* @return $this
145		*/
146	27	public function withDocComment(callable $check = null) : self {
147
148	27	if ($check === null) {
149		$check = function (Token $token) {
150	3	return $token->getType() === T_DOC_COMMENT;
151	3	};
152		}
153	27	$this->docCommentChecker = $check;
154
155	27	return $this;
156		}
157
158
159		/**
160		* Find functions without doc comments
161		*/
162	3	public function withoutDocComment() : self {
163		$this->docCommentChecker = function (Token $token) {
164	3	return $token->isValid() === false;
165		};
166
167	3	return $this;
168		}
169
170
171		/**
172		* @param ParametersPattern $pattern
173		* @return $this
174		*/
175	3	public function withParameters(ParametersPattern $pattern) : self {
176	3	$this->argumentsPattern = $pattern;
177	3	return $this;
178		}
179
180
181		/**
182		* @return $this
183		*/
184	27	public function withAnyModifier() : self {
185	27	$this->modifierChecker = [];
186		$this->modifierChecker[] = function () {
187	24	return true;
188		};
189	27	return $this;
190		}
191
192
193		/**
194		* @param string $modifier
195		* @return $this
196		*/
197	3	public function withModifier(string $modifier) : self {
198		$this->modifierChecker[] = function ($allModifiers) use ($modifier) {
199	3	return in_array($modifier, $allModifiers);
200		};
201
202	3	return $this;
203		}
204
205
206		/**
207		* @param string $modifier
208		* @return $this
209		*/
210		public function withoutModifier(string $modifier) : self {
211
212	3	$this->modifierChecker[] = function ($allModifiers) use ($modifier) {
213	3	return !in_array($modifier, $allModifiers);
214		};
215
216	3	return $this;
217		}
218
219
220		/**
221		* @param string[] $modifiers
222		* @return bool
223		* @throws \Exception
224		*/
225	24	private function isValidModifiers(array $modifiers) : bool {
226	24	foreach ($this->modifierChecker as $checkModifier) {
227	24	$result = $checkModifier($modifiers);
228
229	24	if (!is_bool($result)) {
230		throw new \Exception('Modifier checker should return boolean result');
231		}
232	24	if ($result === false) {
233	24	return false;
234		}
235		}
236
237	24	return true;
238		}
239
240
241		/**
242		* @param QuerySequence $querySequence
243		* @return Collection\|null
244		*/
245	24	public function __invoke(QuerySequence $querySequence) {
246	24	static $availableModifiers = [
247		T_STATIC,
248		T_PRIVATE,
249		T_PUBLIC,
250		T_ABSTRACT,
251		T_FINAL,
252		];
253
254
255		# detect function
256	24	$functionKeyword = $querySequence->strict('function');
257	24	$querySequence->strict(T_WHITESPACE);
258	24	$querySequence->process($this->nameQuery);
259	24	$arguments = $querySequence->section('(', ')');
260	24	$querySequence->possible(T_WHITESPACE);
261	24	$body = $querySequence->section('{', '}');
262
263	24	if (!$querySequence->isValid()) {
264	24	return null;
265		}
266
267	24	$collection = $querySequence->getCollection();
268	24	$first = $collection->getFirst();
269	24	if ($first === null) {
270		return null;
271		}
272
273	24	$start = $collection->extractByTokens($first, $functionKeyword);
274	24	$start->slice(0, -1); // remove last function keyword
275
276		# start reverse search
277	24	$items = array_reverse($start->getTokens());
278	24	$startFrom = null;
279
280	24	$docComment = new Token();
281
282	24	$modifiers = [];
283
284
285		/** @var Token[] $items */
286	24	foreach ($items as $item) {
287
288	24	if ($item->getType() === T_WHITESPACE) {
289	21	$startFrom = $item;
290	21	continue;
291		}
292
293	24	if ($item->getType() === T_DOC_COMMENT and $docComment->isValid() === false) {
294		# Detect only first doc comment
295	6	$startFrom = $item;
296	6	$docComment = $item;
297	6	continue;
298		}
299
300
301	24	if (in_array($item->getType(), $availableModifiers)) {
302	15	$startFrom = $item;
303	15	$modifiers[] = $item->getValue();
304	15	continue;
305		}
306
307	24	break;
308		}
309
310	24	if ($this->isValidModifiers($modifiers) === false) {
311	3	return null;
312		}
313
314	24	if ($this->isValidBody($body) === false) {
315	3	return null;
316		}
317
318	24	if ($this->isValidDocComment($docComment) === false) {
319	3	return null;
320		}
321
322	24	if ($this->isValidArguments($arguments) === false) {
323	3	return null;
324		}
325
326	24	$lastToken = $body->getLast();
327	24	if ($lastToken === null) {
328		return null;
329		}
330
331	24	if ($startFrom === null) {
332	3	$startFrom = $functionKeyword;
333		}
334
335
336	24	if ($this->outputType === self::OUTPUT_FULL) {
337		# all conditions are ok, so extract full function
338	3	$fullFunction = $collection->extractByTokens($startFrom, $lastToken);
339	3	$firstToken = $fullFunction->getFirst();
340	3	if ($firstToken !== null and $firstToken->getType() === T_WHITESPACE) {
341	3	$fullFunction->slice(1);
342		}
343	3	return $fullFunction;
344		}
345
346	24	if ($this->outputType === self::OUTPUT_DOC_COMMENT) {
347	3	return new Collection([$docComment]);
348		}
349
350		# body by default
351	24	$body->slice(0, -1);
352	24	return $body;
353		}
354
355
356		/**
357		* @param Token $token
358		* @return boolean
359		* @throws \Exception
360		*/
361	24	private function isValidDocComment(Token $token) : bool {
362	24	$checker = $this->docCommentChecker;
363	24	return $checker($token);
364		}
365
366
367		/**
368		* @param Collection $parameters
369		* @return bool
370		*/
371	24	private function isValidArguments(Collection $parameters) : bool {
372	24	if ($this->argumentsPattern === null) {
373	21	return true;
374		}
375
376	3	$pattern = (new PatternMatcher($parameters))->apply($this->argumentsPattern);
377
378	3	return (count($pattern->getCollections()) !== 0);
379		}
380
381
382		}

funivan / PhpTokenizer

MethodPattern::__invoke() D last analyzed 2018-06-11 08:59 UTC

Complexity

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MethodPattern::__invoke() D
last analyzed 2018-06-11 08:59 UTC