MethodPattern::isValidBody() - Code Metrics - Inspection of "Improve method pattern" - funivan/PhpTokenizer - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Branch — master (a6414e)

by Shcherbak

created 2016-03-16 11:39 UTC

MethodPattern::isValidBody() A

↳ Parent: MethodPattern

Complexity

Conditions	2
Paths	2

Size

Total Lines	9
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	2.0116

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	9
ccs	6
cts	7
cp	0.8571
rs	9.6666
cc	2
eloc	6
nc	2
nop	1
crap	2.0116

<?php

  namespace Funivan\PhpTokenizer\Pattern\Patterns;

  use Funivan\PhpTokenizer\Collection;
  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;


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


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


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


    /**
     * @param string|QueryStrategy $name
     * @return $this
     */
    public function withName($name) {
      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) {
      $this->bodyChecker = $check;
      return $this;
    }


    /**
     * @param Collection $body
     * @return bool
     * @throws \Exception
     */
    private function isValidBody(Collection $body) {
      $checker = $this->bodyChecker;
      $result = $checker($body);
      if (!is_bool($result)) {
        throw new \Exception('Body checker should return boolean result');
      }

      return $result;
    }


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

      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() {
      $this->docCommentChecker = function (Token $token) {
        return $token->isValid() === false;
      };

      return $this;
    }


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


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

      return $this;
    }


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

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

      return $this;
    }


    /**
     * @param array $modifiers Array<String>
     * @return bool
     * @throws \Exception
     */
    private function isValidModifiers(array $modifiers) {
      foreach ($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);
      $querySequence->section('(', ')');
      $querySequence->possible(T_WHITESPACE);
      $body = $querySequence->section('{', '}');

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

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

      # start reverse search
      $items = array_reverse($start->getItems());
      $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 (is_null($startFrom)) {
        $startFrom = $functionKeyword;
      }


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

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

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


    /**
     * @param Token $token
     * @return mixed
     * @throws \Exception
     */
    private function isValidDocComment(Token $token) {
      $checker = $this->docCommentChecker;
      $result = $checker($token);
      if (!is_bool($result)) {
        throw new \Exception('DocComment checker should return boolean result');
      }

      return $result;
    }


  }

1		<?php
2
3		namespace Funivan\PhpTokenizer\Pattern\Patterns;
4
5		use Funivan\PhpTokenizer\Collection;
6		use Funivan\PhpTokenizer\QuerySequence\QuerySequence;
7		use Funivan\PhpTokenizer\Strategy\QueryStrategy;
8		use Funivan\PhpTokenizer\Strategy\Strict;
9		use Funivan\PhpTokenizer\Token;
10
11		/**
12		* Find method in code
13		*/
14		class MethodPattern implements PatternInterface {
15
16		const OUTPUT_BODY = 0;
17
18		const OUTPUT_FULL = 1;
19
20		const OUTPUT_DOC_COMMENT = 2;
21
22
23		/**
24		* @var QueryStrategy
25		*/
26		private $nameQuery;
27
28		/**
29		* @var callable[]
30		*/
31		private $modifierChecker = [];
32
33		/**
34		* @var callable
35		*/
36		private $bodyChecker;
37
38		/**
39		* @var callable
40		*/
41		private $docCommentChecker;
42
43		/**
44		* @var int
45		*/
46		private $outputType = self::OUTPUT_BODY;
47
48
49		/**
50		*
51		*/
52	19	public function __construct() {
53	16	$this->withName(Strict::create()->valueLike('!.+!'));
54	16	$this->withAnyModifier();
55
56		/** @noinspection PhpUnusedParameterInspection */
57		$this->withBody(function (Collection $body) {
		1 ignored issue – show Unused Code introduced 2016-03-16 11:05 UTC by Report Bug Copy Issue Report The parameter `$body` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
58	15	return true;
59	16	});
60
61		/** @noinspection PhpUnusedParameterInspection */
62		$this->withDocComment(function (Token $token) {
		1 ignored issue – show Unused Code introduced 2016-03-16 11:05 UTC by Report Bug Copy Issue Report The parameter `$token` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
63	15	return true;
64	16	});
65
66	19	}
67
68
69		/**
70		* @return $this
71		*/
72	3	public function outputFull() {
73	3	$this->outputType = self::OUTPUT_FULL;
74	3	return $this;
75		}
76
77
78		/**
79		* @return $this
80		*/
81	3	public function outputBody() {
82	3	$this->outputType = self::OUTPUT_BODY;
83	3	return $this;
84		}
85
86
87		/**
88		* @return $this
89		*/
90	3	public function outputDocComment() {
91	3	$this->outputType = self::OUTPUT_DOC_COMMENT;
92	3	return $this;
93		}
94
95
96		/**
97		* @param string\|QueryStrategy $name
98		* @return $this
99		*/
100	19	public function withName($name) {
101	16	if (is_string($name)) {
102	2	$this->nameQuery = Strict::create()->valueIs($name);
103	10	} elseif ($name instanceof QueryStrategy) {
104	19	$this->nameQuery = $name;
105	8	} else {
106	2	throw new \InvalidArgumentException('Invalid name format. Expect string or Query');
107	3	}
108
109	19	return $this;
110		}
111
112
113		/**
114		* @param callable $check
115		* @return $this
116		*/
117	19	public function withBody(callable $check) {
118	19	$this->bodyChecker = $check;
119	19	return $this;
120	3	}
121
122
123		/**
124		* @param Collection $body
125		* @return bool
126		* @throws \Exception
127		*/
128	15	private function isValidBody(Collection $body) {
129	15	$checker = $this->bodyChecker;
130	14	$result = $checker($body);
131	14	if (!is_bool($result)) {
132		throw new \Exception('Body checker should return boolean result');
133		}
134
135	15	return $result;
136	1	}
137
138
139		/**
140		* @param callable $check
141		* @return $this
142		*/
143	19	public function withDocComment(callable $check = null) {
144
145	19	if ($check === null) {
146		$check = function (Token $token) {
147	2	return $token->getType() === T_DOC_COMMENT;
148	2	};
149	1	}
150	19	$this->docCommentChecker = $check;
151
152	19	return $this;
153	3	}
154
155
156		/**
157		* Find functions without doc comments
158		*/
159	3	public function withoutDocComment() {
160		$this->docCommentChecker = function (Token $token) {
161	2	return $token->isValid() === false;
162		};
163
164	3	return $this;
165		}
166
167
168		/**
169		* @return $this
170		*/
171	19	public function withAnyModifier() {
172	19	$this->modifierChecker = [];
173		$this->modifierChecker[] = function () {
174	15	return true;
175	3	};
176	19	return $this;
177		}
178
179
180		/**
181		* @param string $modifier
182		* @return $this
183		*/
184	2	public function withModifier($modifier) {
185		$this->modifierChecker[] = function ($allModifiers) use ($modifier) {
186	2	return in_array($modifier, $allModifiers);
187		};
188
189	2	return $this;
190		}
191
192
193		/**
194		* @param string $modifier
195		* @return $this
196		*/
197		public function withoutModifier($modifier) {
198
199	3	$this->modifierChecker[] = function ($allModifiers) use ($modifier) {
200	2	return !in_array($modifier, $allModifiers);
201	1	};
202
203	3	return $this;
204		}
205
206
207		/**
208		* @param array $modifiers Array<String>
209		* @return bool
210		* @throws \Exception
211		*/
212	15	private function isValidModifiers(array $modifiers) {
213	15	foreach ($this->modifierChecker as $checkModifier) {
214	14	$result = $checkModifier($modifiers);
215
216	14	if (!is_bool($result)) {
217		throw new \Exception('Modifier checker should return boolean result');
218		}
219	15	if ($result === false) {
220	8	return false;
221		}
222	7	}
223
224	15	return true;
225	1	}
226
227
228		/**
229		* @param QuerySequence $querySequence
230		* @return Collection\|null
231		*/
232	16	public function __invoke(QuerySequence $querySequence) {
233	7	static $availableModifiers = [
234	1	T_STATIC,
235	1	T_PRIVATE,
236	1	T_PUBLIC,
237	1	T_ABSTRACT,
238	1	T_FINAL,
239	7	];
240
241
242		# detect function
243	14	$functionKeyword = $querySequence->strict('function');
244	14	$querySequence->strict(T_WHITESPACE);
245	14	$querySequence->process($this->nameQuery);
246	14	$querySequence->section('(', ')');
247	14	$querySequence->possible(T_WHITESPACE);
248	14	$body = $querySequence->section('{', '}');
249
250	14	if (!$querySequence->isValid()) {
251	14	return null;
252		}
253
254	14	$collection = $querySequence->getCollection();
255	14	$start = $collection->extractByTokens($collection->getFirst(), $functionKeyword);
256	14	$start->slice(0, -1); // remove last function keyword
257
258		# start reverse search
259	14	$items = array_reverse($start->getItems());
260	15	$startFrom = null;
261
262	14	$docComment = new Token();
263
264	15	$modifiers = [];
265
266
267		/** @var Token[] $items */
268	14	foreach ($items as $item) {
269
270	14	if ($item->getType() === T_WHITESPACE) {
271	12	$startFrom = $item;
272	12	continue;
273		}
274
275	14	if ($item->getType() === T_DOC_COMMENT and $docComment->isValid() === false) {
276		# Detect only first doc comment
277	4	$startFrom = $item;
278	4	$docComment = $item;
279	4	continue;
280		}
281
282
283	14	if (in_array($item->getType(), $availableModifiers)) {
284	10	$startFrom = $item;
285	10	$modifiers[] = $item->getValue();
286	10	continue;
287		}
288
289	16	break;
290	8	}
291
292	14	if ($this->isValidModifiers($modifiers) === false) {
293	2	return null;
294		}
295
296	14	if ($this->isValidBody($body) === false) {
297	2	return null;
298		}
299
300	14	if ($this->isValidDocComment($docComment) === false) {
301	2	return null;
302		}
303
304	14	if (is_null($startFrom)) {
305	3	$startFrom = $functionKeyword;
306	1	}
307
308
309	15	if ($this->outputType === self::OUTPUT_FULL) {
310		# all conditions are ok, so extract full function
311	2	$fullFunction = $collection->extractByTokens($startFrom, $body->getLast());
312	2	if ($fullFunction->getFirst()->getType() == T_WHITESPACE) {
313	2	$fullFunction->slice(1);
314	1	}
315	3	return $fullFunction;
316
317	15	} elseif ($this->outputType == self::OUTPUT_DOC_COMMENT) {
318	2	return new Collection([$docComment]);
319		}
320
321		# body by default
322	14	$body->slice(0, -1);
323	15	return $body;
324		}
325
326
327		/**
328		* @param Token $token
329		* @return mixed
330		* @throws \Exception
331		*/
332	15	private function isValidDocComment(Token $token) {
333	15	$checker = $this->docCommentChecker;
334	14	$result = $checker($token);
335	14	if (!is_bool($result)) {
336		throw new \Exception('DocComment checker should return boolean result');
337		}
338
339	15	return $result;
340	1	}
341
342
343		}

funivan / PhpTokenizer

Branch — master (a6414e)

MethodPattern::isValidBody() A

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