Scanners::processTokenStream() - Code Metrics - eserozvataf/scabbia2-scanners - Measure and Improve Code Quality continuously with Scrutinizer

Scanners::processTokenStream() D
last analyzed 2016-01-03 14:58 UTC

↳ Parent: Scanners

Complexity

Conditions	29
Paths	52

Size

Total Lines	103
Code Lines	71

Duplication

Lines	16
Ratio	15.53 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	16
loc	103
rs	4.4524
cc	29
eloc	71
nc	52
nop	1

How to fix Long Method Complexity

<?php
/**
 * Scabbia2 Scanners Component
 * https://github.com/eserozvataf/scabbia2
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 *
 * @link        https://github.com/eserozvataf/scabbia2-scanners for the canonical source repository
 * @copyright   2010-2016 Eser Ozvataf. (http://eser.ozvataf.com/)
 * @license     http://www.apache.org/licenses/LICENSE-2.0 - Apache License, Version 2.0
 */

namespace Scabbia\Scanners;

use Scabbia\Helpers\FileSystem;
// use Scabbia\Scanners\ScannerInterface;
use LogicException;
use ReflectionClass;

/**
 * Scanners registry
 *
 * @package     Scabbia\Scanners
 * @author      Eser Ozvataf <[email protected]>
 * @since       2.0.0
 */
class Scanners
{
    /** @type array      scanner classes */
    public $scanners = [];


    /**
     * Registers a scanner
     *
     * @param array|string   $uScanners    scanner instances
     *
     * @return void
     */
    public function register(...$uScanners)
    {
        foreach ($uScanners as $tScanner) {
            $this->scanners[] = $tScanner;
        }
    }

    /**
     * Scans all files in folders
     *
     * @param array|string  $uFolders          folders
     *
     * @return void
     */
    public function processFolder(...$uFolders)
    {
        foreach ($uFolders as $tFolder) {
            FileSystem::getFilesWalk(
                $tFolder,
/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}
                "*.php",
                true,
                [$this, "processFile"]
            );
        }
    }

    /**
     * Scans a file
     *
     * @param string      $uFile             file path
     *
     * @return void
     */
    public function processFile($uFile)
    {
        $tFileContents = FileSystem::read($uFile);

        foreach ($this->scanners as $tScanner) {
            $tScanner->processFile($uFile, $tFileContents);
        }

        $tTokenStream = TokenStream::fromString($tFileContents);
<?php

function getDate($date)
{
    if ($date !== null) {
        return new DateTime($date);
    }

    return false;
}
        $this->processTokenStream($tTokenStream);
    }

    /**
     * Scans a token stream
     *
     * @param TokenStream $uTokenStream      extracted tokens wrapped with tokenstream
     *
     * @return void
     */
    public function processTokenStream(TokenStream $uTokenStream)
    {
        foreach ($this->scanners as $tScanner) {
            $tScanner->processTokenStream($uTokenStream);
        }

        $tBuffer = "";

        $tUses = [];
        $tLastNamespace = null;
        $tLastClass = null;
        $tLastClassDerivedFrom = null;
        $tExpectation = 0; // 1=namespace, 2=class


        foreach ($uTokenStream as $tToken) {
            if ($tToken[0] === T_WHITESPACE) {
                continue;
            }

            if ($tExpectation === 0) {
                if ($tToken[0] === T_NAMESPACE) {
                    $tBuffer = "";
                    $tExpectation = 1;
                    continue;
                }

                if ($tToken[0] === T_CLASS) {
                    $tExpectation = 2;
                    continue;
                }

                if ($tToken[0] === T_USE) {
                    $tBuffer = "";
                    $tExpectation = 5;
                    continue;
                }
            } elseif ($tExpectation === 1) {

                if ($tToken[0] === T_STRING || $tToken[0] === T_NS_SEPARATOR) {
                    $tBuffer .= $tToken[1];
                } else {
                    $tLastNamespace = $tBuffer;
                    $tExpectation = 0;
                }
            } elseif ($tExpectation === 2) {
                $tLastClass = "{$tLastNamespace}\\{$tToken[1]}";
                $tExpectation = 3;
            } elseif ($tExpectation === 3) {
                if ($tToken[0] === T_EXTENDS) {
                    $tBuffer = "";
                    $tExpectation = 4;
                    continue;
                }

                $tSkip = false;
                if ($tLastClassDerivedFrom !== null && !class_exists($tLastClassDerivedFrom)) {
                    $tSkip = true;
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}
                    throw new LogicException(sprintf(
                        "\"%s\" derived from \"%s\", but it could not be found.\n",
                        $tLastClass,
                        $tLastClassDerivedFrom
                    ));
                }

                if (!$tSkip && !isset($this->result[$tLastClass])) {
class MyClass { }

$x = new MyClass();
$x->foo = true;
                    $this->processClass($tLastClass);
                }

                $tExpectation = 0;
            } elseif ($tExpectation === 4) {
                if ($tToken[0] === T_STRING || $tToken[0] === T_NS_SEPARATOR) {
                    $tBuffer .= $tToken[1];
                } else {
                    $tFound = false;

                    foreach ($tUses as $tUse) {
                        $tLength = strlen($tBuffer);
                        if (strlen($tUse) >= $tLength && substr($tUse, -$tLength) === $tBuffer) {
                            $tLastClassDerivedFrom = $tUse;
                            $tFound = true;
                            break;
                        }
                    }

                    if (!$tFound) {
                        if (strpos($tBuffer, "\\") !== false) {
                            $tLastClassDerivedFrom = $tBuffer;
                        } else {
                            $tLastClassDerivedFrom = "{$tLastNamespace}\\{$tBuffer}";
                        }
                    }

                    $tExpectation = 3;
                }
            } elseif ($tExpectation === 5) {

                if ($tToken[0] === T_STRING || $tToken[0] === T_NS_SEPARATOR) {
                    $tBuffer .= $tToken[1];
                } else {
                    $tUses[] = $tBuffer;
                    $tExpectation = 0;
                }
            }
        }
    }

    /**
     * Processes classes using reflection
     *
     * @param string      $uClass            class name
     *
     * @return void
     */
    public function processClass($uClass)
    {
        $tReflection = new ReflectionClass($uClass);

        foreach ($this->scanners as $tScanner) {
            $tScanner->processClass($uClass, $tReflection);
        }
    }
}


1		<?php
2		/**
3		* Scabbia2 Scanners Component
4		* https://github.com/eserozvataf/scabbia2
5		*
6		* For the full copyright and license information, please view the LICENSE
7		* file that was distributed with this source code.
8		*
9		* @link https://github.com/eserozvataf/scabbia2-scanners for the canonical source repository
10		* @copyright 2010-2016 Eser Ozvataf. (http://eser.ozvataf.com/)
11		* @license http://www.apache.org/licenses/LICENSE-2.0 - Apache License, Version 2.0
12		*/
13
14		namespace Scabbia\Scanners;
15
16		use Scabbia\Helpers\FileSystem;
17		// use Scabbia\Scanners\ScannerInterface;
18		use LogicException;
19		use ReflectionClass;
20
21		/**
22		* Scanners registry
23		*
24		* @package Scabbia\Scanners
25		* @author Eser Ozvataf <[email protected]>
26		* @since 2.0.0
27		*/
28		class Scanners
29		{
30		/** @type array scanner classes */
31		public $scanners = [];
32
33
34		/**
35		* Registers a scanner
36		*
37		* @param array\|string $uScanners scanner instances
38		*
39		* @return void
40		*/
41		public function register(...$uScanners)
42		{
43		foreach ($uScanners as $tScanner) {
44		$this->scanners[] = $tScanner;
45		}
46		}
47
48		/**
49		* Scans all files in folders
50		*
51		* @param array\|string $uFolders folders
52		*
53		* @return void
54		*/
55		public function processFolder(...$uFolders)
56		{
57		foreach ($uFolders as $tFolder) {
58		FileSystem::getFilesWalk(
59		$tFolder,
		0 ignored issues – show Bug introduced 2016-01-02 18:53 UTC by Report Bug Copy Issue Report It seems like `$tFolder` defined by `$tFolder` on line `57` can also be of type `array`; however, `Scabbia\Helpers\FileSystem::getFilesWalk()` does only seem to accept `string`, maybe add an additional type check? If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check: /** * @return array\|string */ function returnsDifferentValues($x) { if ($x) { return 'foo'; } return array(); } $x = returnsDifferentValues($y); if (is_array($x)) { // $x is an array. } If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue. Loading history...
60		"*.php",
61		true,
62		[$this, "processFile"]
63		);
64		}
65		}
66
67		/**
68		* Scans a file
69		*
70		* @param string $uFile file path
71		*
72		* @return void
73		*/
74		public function processFile($uFile)
75		{
76		$tFileContents = FileSystem::read($uFile);
77
78		foreach ($this->scanners as $tScanner) {
79		$tScanner->processFile($uFile, $tFileContents);
80		}
81
82		$tTokenStream = TokenStream::fromString($tFileContents);
		0 ignored issues – show Security Bug introduced 2016-01-02 18:53 UTC by Report Bug Copy Issue Report It seems like `$tFileContents` defined by `\Scabbia\Helpers\FileSystem::read($uFile)` on line `76` can also be of type `false`; however, `Scabbia\Scanners\TokenStream::fromString()` does only seem to accept `string`, did you maybe forget to handle an error condition? This check looks for type mismatches where the missing type is `false`. This is usually indicative of an error condtion. Consider the follow example <?php function getDate($date) { if ($date !== null) { return new DateTime($date); } return false; } This function either returns a new `DateTime` object or false, if there was an error. This is a typical pattern in PHP programming to show that an error has occurred without raising an exception. The calling code should check for this returned `false` before passing on the value to another function or method that may not be able to handle a `false`. Loading history...
83		$this->processTokenStream($tTokenStream);
84		}
85
86		/**
87		* Scans a token stream
88		*
89		* @param TokenStream $uTokenStream extracted tokens wrapped with tokenstream
90		*
91		* @return void
92		*/
93		public function processTokenStream(TokenStream $uTokenStream)
94		{
95		foreach ($this->scanners as $tScanner) {
96		$tScanner->processTokenStream($uTokenStream);
97		}
98
99		$tBuffer = "";
100
101		$tUses = [];
102		$tLastNamespace = null;
103		$tLastClass = null;
104		$tLastClassDerivedFrom = null;
105		$tExpectation = 0; // 1=namespace, 2=class
		0 ignored issues – show Unused Code Comprehensibility introduced 2016-01-02 18:53 UTC by Report Bug Copy Issue Report `56%` of this comment could be valid code. Did you maybe forget this after debugging? Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it. The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production. This check looks for comments that seem to be mostly valid code and reports them. Loading history...
106
107		foreach ($uTokenStream as $tToken) {
108		if ($tToken[0] === T_WHITESPACE) {
109		continue;
110		}
111
112		if ($tExpectation === 0) {
113		if ($tToken[0] === T_NAMESPACE) {
114		$tBuffer = "";
115		$tExpectation = 1;
116		continue;
117		}
118
119		if ($tToken[0] === T_CLASS) {
120		$tExpectation = 2;
121		continue;
122		}
123
124		if ($tToken[0] === T_USE) {
125		$tBuffer = "";
126		$tExpectation = 5;
127		continue;
128		}
129	View Code Duplication	} elseif ($tExpectation === 1) {
		0 ignored issues – show Duplication introduced 2016-01-02 18:53 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
130		if ($tToken[0] === T_STRING \|\| $tToken[0] === T_NS_SEPARATOR) {
131		$tBuffer .= $tToken[1];
132		} else {
133		$tLastNamespace = $tBuffer;
134		$tExpectation = 0;
135		}
136		} elseif ($tExpectation === 2) {
137		$tLastClass = "{$tLastNamespace}\\{$tToken[1]}";
138		$tExpectation = 3;
139		} elseif ($tExpectation === 3) {
140		if ($tToken[0] === T_EXTENDS) {
141		$tBuffer = "";
142		$tExpectation = 4;
143		continue;
144		}
145
146		$tSkip = false;
147		if ($tLastClassDerivedFrom !== null && !class_exists($tLastClassDerivedFrom)) {
148		$tSkip = true;
		0 ignored issues – show Unused Code introduced 2016-01-02 18:53 UTC by Report Bug Copy Issue Report `$tSkip` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
149		throw new LogicException(sprintf(
150		"\"%s\" derived from \"%s\", but it could not be found.\n",
151		$tLastClass,
152		$tLastClassDerivedFrom
153		));
154		}
155
156		if (!$tSkip && !isset($this->result[$tLastClass])) {
		0 ignored issues – show Bug introduced 2016-01-02 18:53 UTC by Report Bug Copy Issue Report The property `result` does not exist. Did you maybe forget to declare it? In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code: class MyClass { } $x = new MyClass(); $x->foo = true; Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: class MyClass { public $foo; } $x = new MyClass(); $x->foo = true; Loading history...
157		$this->processClass($tLastClass);
158		}
159
160		$tExpectation = 0;
161		} elseif ($tExpectation === 4) {
162		if ($tToken[0] === T_STRING \|\| $tToken[0] === T_NS_SEPARATOR) {
163		$tBuffer .= $tToken[1];
164		} else {
165		$tFound = false;
166
167		foreach ($tUses as $tUse) {
168		$tLength = strlen($tBuffer);
169		if (strlen($tUse) >= $tLength && substr($tUse, -$tLength) === $tBuffer) {
170		$tLastClassDerivedFrom = $tUse;
171		$tFound = true;
172		break;
173		}
174		}
175
176		if (!$tFound) {
177		if (strpos($tBuffer, "\\") !== false) {
178		$tLastClassDerivedFrom = $tBuffer;
179		} else {
180		$tLastClassDerivedFrom = "{$tLastNamespace}\\{$tBuffer}";
181		}
182		}
183
184		$tExpectation = 3;
185		}
186	View Code Duplication	} elseif ($tExpectation === 5) {
		0 ignored issues – show Duplication introduced 2016-01-02 18:53 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
187		if ($tToken[0] === T_STRING \|\| $tToken[0] === T_NS_SEPARATOR) {
188		$tBuffer .= $tToken[1];
189		} else {
190		$tUses[] = $tBuffer;
191		$tExpectation = 0;
192		}
193		}
194		}
195		}
196
197		/**
198		* Processes classes using reflection
199		*
200		* @param string $uClass class name
201		*
202		* @return void
203		*/
204		public function processClass($uClass)
205		{
206		$tReflection = new ReflectionClass($uClass);
207
208		foreach ($this->scanners as $tScanner) {
209		$tScanner->processClass($uClass, $tReflection);
210		}
211		}
212		}
213

eserozvataf / scabbia2-scanners

Scanners::processTokenStream() D last analyzed 2016-01-03 14:58 UTC

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Scanners::processTokenStream() D
last analyzed 2016-01-03 14:58 UTC