AspectKernel::getInstance() - Code Metrics - Inspection of "[WIP] Migrate to the goaop/parser-reflection libra..." - goaop/framework - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#240)

by Alexander

created 2016-02-15 14:24 UTC

AspectKernel::getInstance() A

↳ Parent: AspectKernel

Complexity

Conditions	2
Paths	2

Size

Total Lines	8
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	6

Importance

Changes	1
Bugs	1	Features	0

Metric	Value
dl	0
loc	8
ccs	0
cts	4
cp	0
rs	9.4285
c	1
b	1
f	0
cc	2
eloc	4
nc	2
nop	0
crap	6

<?php
/*
 * Go! AOP framework
 *
 * @copyright Copyright 2012, Lisachenko Alexander <[email protected]>
 *
 * This source file is subject to the license that is bundled
 * with this source code in the file LICENSE.
 */

namespace Go\Core;

use Go\Aop\Features;
use Go\Instrument\ClassLoading\AopComposerLoader;
use Go\Instrument\ClassLoading\SourceTransformingLoader;
use Go\Instrument\PathResolver;
use Go\Instrument\Transformer\ConstructorExecutionTransformer;
use Go\Instrument\Transformer\SourceTransformer;
use Go\Instrument\Transformer\WeavingTransformer;
use Go\Instrument\Transformer\CachingTransformer;
use Go\Instrument\Transformer\FilterInjectorTransformer;
use Go\Instrument\Transformer\MagicConstantTransformer;

/**
 * Abstract aspect kernel is used to prepare an application to work with aspects.
 */
abstract class AspectKernel
{

    /**
     * Version of kernel
     */
    const VERSION = '1.0.0';

    /**
     * Kernel options
     *
     * @var array
     */
    protected $options = array(
        'features' => 0
    );

    /**
     * Single instance of kernel
     *
     * @var null|static
     */
    protected static $instance = null;

    /**
     * Default class name for container, can be redefined in children
     *
     * @var string
     */
    protected static $containerClass = GoAspectContainer::class;

    /**
     * Aspect container instance
     *
     * @var null|AspectContainer
     */
    protected $container = null;

    /**
     * Protected constructor is used to prevent direct creation, but allows customization if needed
     */
    protected function __construct() {}

    /**
     * Returns the single instance of kernel
     *
     * @return AspectKernel
     */
    public static function getInstance()
    {
        if (!self::$instance) {
            self::$instance = new static();
        }

        return self::$instance;
    }

    /**
     * Init the kernel and make adjustments
     *
     * @param array $options Associative array of options for kernel
     */
    public function init(array $options = [])
    {
        $this->options = $this->normalizeOptions($options);
        define('AOP_ROOT_DIR', $this->options['appDir']);
        define('AOP_CACHE_DIR', $this->options['cacheDir']);

        /** @var $container AspectContainer */
        $container = $this->container = new $this->options['containerClass'];
        $container->set('kernel', $this);
        $container->set('kernel.interceptFunctions', $this->hasFeature(Features::INTERCEPT_FUNCTIONS));
        $container->set('kernel.options', $this->options);

        SourceTransformingLoader::register();

        foreach ($this->registerTransformers() as $sourceTransformer) {
            SourceTransformingLoader::addTransformer($sourceTransformer);
        }

        // Register kernel resources in the container for debug mode
        if ($this->options['debug']) {
            $this->addKernelResourcesToContainer($container);
        }

        AopComposerLoader::init($this->options, $container);

        // Register all AOP configuration in the container
        $this->configureAop($container);
    }

    /**
     * Returns an aspect container
     *
     * @return null|AspectContainer
     */
    public function getContainer()
    {
        return $this->container;
    }

    /**
     * Checks if kernel configuration has enabled specific feature
     *
     * @param integer $featureToCheck See Go\Aop\Features enumeration class for features
     *
     * @return bool Whether specific feature enabled or not
     */
    public function hasFeature($featureToCheck)
    {
        return ($this->options['features'] & $featureToCheck) !== 0;
    }

    /**
     * Returns list of kernel options
     *
     * @return array
     */
    public function getOptions()
    {
        return $this->options;
    }

    /**
     * Returns default options for kernel. Available options:
     *
     *   debug    - boolean Determines whether or not kernel is in debug mode
     *   appDir   - string Path to the application root directory.
     *   cacheDir - string Path to the cache directory where compiled classes will be stored
     *   cacheFileMode - integer Binary mask of permission bits that is set to cache files
     *   features - integer Binary mask of features
     *   includePaths - array Whitelist of directories where aspects should be applied. Empty for everywhere.
     *   excludePaths - array Blacklist of directories or files where aspects shouldn't be applied.
     *
     * @return array
     */
    protected function getDefaultOptions()
    {
        return array(
            'debug'                  => false,
            'appDir'                 => __DIR__ . '/../../../../../',
            'cacheDir'               => null,
            'cacheFileMode'          => null,
            'features'               => 0,

            'includePaths'           => [],
            'excludePaths'           => [],
            'containerClass'         => static::$containerClass,
        );
    }


    /**
     * Normalizes options for the kernel
     *
     * @param array $options List of options
     *
     * @return array
     */
    protected function normalizeOptions(array $options)
    {
        $options = array_replace($this->getDefaultOptions(), $options);
        if ($options['cacheDir']) {
            $options['excludePaths'][] = $options['cacheDir'];
        }
        $options['excludePaths'][] = __DIR__ . '/../';

        $options['appDir']   = PathResolver::realpath($options['appDir']);
        $options['cacheDir'] = PathResolver::realpath($options['cacheDir']);
        $options['includePaths'] = PathResolver::realpath($options['includePaths']);
        $options['excludePaths'] = PathResolver::realpath($options['excludePaths']);

        return $options;
    }

    /**
     * Configure an AspectContainer with advisors, aspects and pointcuts
     *
     * @param AspectContainer $container
     *
     * @return void
     */
    abstract protected function configureAop(AspectContainer $container);

    /**
     * Returns list of source transformers, that will be applied to the PHP source
     *
     * @return array|SourceTransformer[]
     */
    protected function registerTransformers()
    {
        $cacheManager     = $this->getContainer()->get('aspect.cache.path.manager');
        $filterInjector   = new FilterInjectorTransformer($this, SourceTransformingLoader::getId(), $cacheManager);
        $magicTransformer = new MagicConstantTransformer($this);
        $aspectKernel     = $this;

        $sourceTransformers = function () use ($filterInjector, $magicTransformer, $aspectKernel, $cacheManager) {
            $transformers    = [];
            $aspectContainer = $aspectKernel->getContainer();
            $transformers[]  = new WeavingTransformer(
                $aspectKernel,
                $aspectContainer->get('aspect.advice_matcher'),
                $cacheManager,
                $aspectContainer->get('aspect.cached.loader')
            );
            if ($aspectKernel->hasFeature(Features::INTERCEPT_INCLUDES)) {
                $transformers[] = $filterInjector;
            }
            $transformers[] = $magicTransformer;

            if ($aspectKernel->hasFeature(Features::INTERCEPT_INITIALIZATIONS)) {
                $transformers[] = new ConstructorExecutionTransformer();
            }

            return $transformers;
        };

        return array(
            new CachingTransformer($this, $sourceTransformers, $cacheManager)
        );
    }

    /**
     * Add resources for kernel
     *
     * @param AspectContainer $container
     */
    protected function addKernelResourcesToContainer(AspectContainer $container)
    {
        $trace    = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2);
        $refClass = new \ReflectionObject($this);

        $container->addResource($trace[1]['file']);
        $container->addResource($refClass->getFileName());
    }
}


1		<?php
2		/*
3		* Go! AOP framework
4		*
5		* @copyright Copyright 2012, Lisachenko Alexander <[email protected]>
6		*
7		* This source file is subject to the license that is bundled
8		* with this source code in the file LICENSE.
9		*/
10
11		namespace Go\Core;
12
13		use Go\Aop\Features;
14		use Go\Instrument\ClassLoading\AopComposerLoader;
15		use Go\Instrument\ClassLoading\SourceTransformingLoader;
16		use Go\Instrument\PathResolver;
17		use Go\Instrument\Transformer\ConstructorExecutionTransformer;
18		use Go\Instrument\Transformer\SourceTransformer;
19		use Go\Instrument\Transformer\WeavingTransformer;
20		use Go\Instrument\Transformer\CachingTransformer;
21		use Go\Instrument\Transformer\FilterInjectorTransformer;
22		use Go\Instrument\Transformer\MagicConstantTransformer;
23
24		/**
25		* Abstract aspect kernel is used to prepare an application to work with aspects.
26		*/
27		abstract class AspectKernel
28		{
29
30		/**
31		* Version of kernel
32		*/
33		const VERSION = '1.0.0';
34
35		/**
36		* Kernel options
37		*
38		* @var array
39		*/
40		protected $options = array(
41		'features' => 0
42		);
43
44		/**
45		* Single instance of kernel
46		*
47		* @var null\|static
48		*/
49		protected static $instance = null;
50
51		/**
52		* Default class name for container, can be redefined in children
53		*
54		* @var string
55		*/
56		protected static $containerClass = GoAspectContainer::class;
57
58		/**
59		* Aspect container instance
60		*
61		* @var null\|AspectContainer
62		*/
63		protected $container = null;
64
65		/**
66		* Protected constructor is used to prevent direct creation, but allows customization if needed
67		*/
68		protected function __construct() {}
69
70		/**
71		* Returns the single instance of kernel
72		*
73		* @return AspectKernel
74		*/
75		public static function getInstance()
76		{
77		if (!self::$instance) {
78		self::$instance = new static();
79		}
80
81		return self::$instance;
82		}
83
84		/**
85		* Init the kernel and make adjustments
86		*
87		* @param array $options Associative array of options for kernel
88		*/
89		public function init(array $options = [])
90		{
91		$this->options = $this->normalizeOptions($options);
92		define('AOP_ROOT_DIR', $this->options['appDir']);
93		define('AOP_CACHE_DIR', $this->options['cacheDir']);
94
95		/** @var $container AspectContainer */
96		$container = $this->container = new $this->options['containerClass'];
97		$container->set('kernel', $this);
98		$container->set('kernel.interceptFunctions', $this->hasFeature(Features::INTERCEPT_FUNCTIONS));
99		$container->set('kernel.options', $this->options);
100
101		SourceTransformingLoader::register();
102
103		foreach ($this->registerTransformers() as $sourceTransformer) {
104		SourceTransformingLoader::addTransformer($sourceTransformer);
105		}
106
107		// Register kernel resources in the container for debug mode
108		if ($this->options['debug']) {
109		$this->addKernelResourcesToContainer($container);
110		}
111
112		AopComposerLoader::init($this->options, $container);
113
114		// Register all AOP configuration in the container
115		$this->configureAop($container);
116		}
117
118		/**
119		* Returns an aspect container
120		*
121		* @return null\|AspectContainer
122		*/
123	6	public function getContainer()
124		{
125	6	return $this->container;
126		}
127
128		/**
129		* Checks if kernel configuration has enabled specific feature
130		*
131		* @param integer $featureToCheck See Go\Aop\Features enumeration class for features
132		*
133		* @return bool Whether specific feature enabled or not
134		*/
135		public function hasFeature($featureToCheck)
136		{
137		return ($this->options['features'] & $featureToCheck) !== 0;
138		}
139
140		/**
141		* Returns list of kernel options
142		*
143		* @return array
144		*/
145		public function getOptions()
146		{
147		return $this->options;
148		}
149
150		/**
151		* Returns default options for kernel. Available options:
152		*
153		* debug - boolean Determines whether or not kernel is in debug mode
154		* appDir - string Path to the application root directory.
155		* cacheDir - string Path to the cache directory where compiled classes will be stored
156		* cacheFileMode - integer Binary mask of permission bits that is set to cache files
157		* features - integer Binary mask of features
158		* includePaths - array Whitelist of directories where aspects should be applied. Empty for everywhere.
159		* excludePaths - array Blacklist of directories or files where aspects shouldn't be applied.
160		*
161		* @return array
162		*/
163		protected function getDefaultOptions()
164		{
165		return array(
166		'debug' => false,
167		'appDir' => __DIR__ . '/../../../../../',
168		'cacheDir' => null,
169		'cacheFileMode' => null,
170		'features' => 0,
171
172		'includePaths' => [],
173		'excludePaths' => [],
174		'containerClass' => static::$containerClass,
175		);
176		}
177
178
179		/**
180		* Normalizes options for the kernel
181		*
182		* @param array $options List of options
183		*
184		* @return array
185		*/
186		protected function normalizeOptions(array $options)
187		{
188		$options = array_replace($this->getDefaultOptions(), $options);
189		if ($options['cacheDir']) {
190		$options['excludePaths'][] = $options['cacheDir'];
191		}
192		$options['excludePaths'][] = __DIR__ . '/../';
193
194		$options['appDir'] = PathResolver::realpath($options['appDir']);
195		$options['cacheDir'] = PathResolver::realpath($options['cacheDir']);
196		$options['includePaths'] = PathResolver::realpath($options['includePaths']);
197		$options['excludePaths'] = PathResolver::realpath($options['excludePaths']);
198
199		return $options;
200		}
201
202		/**
203		* Configure an AspectContainer with advisors, aspects and pointcuts
204		*
205		* @param AspectContainer $container
206		*
207		* @return void
208		*/
209		abstract protected function configureAop(AspectContainer $container);
210
211		/**
212		* Returns list of source transformers, that will be applied to the PHP source
213		*
214		* @return array\|SourceTransformer[]
215		*/
216		protected function registerTransformers()
217		{
218		$cacheManager = $this->getContainer()->get('aspect.cache.path.manager');
219		$filterInjector = new FilterInjectorTransformer($this, SourceTransformingLoader::getId(), $cacheManager);
220		$magicTransformer = new MagicConstantTransformer($this);
221		$aspectKernel = $this;
222
223		$sourceTransformers = function () use ($filterInjector, $magicTransformer, $aspectKernel, $cacheManager) {
224		$transformers = [];
225		$aspectContainer = $aspectKernel->getContainer();
226		$transformers[] = new WeavingTransformer(
227		$aspectKernel,
228		$aspectContainer->get('aspect.advice_matcher'),
229		$cacheManager,
230		$aspectContainer->get('aspect.cached.loader')
231		);
232		if ($aspectKernel->hasFeature(Features::INTERCEPT_INCLUDES)) {
233		$transformers[] = $filterInjector;
234		}
235		$transformers[] = $magicTransformer;
236
237		if ($aspectKernel->hasFeature(Features::INTERCEPT_INITIALIZATIONS)) {
238		$transformers[] = new ConstructorExecutionTransformer();
239		}
240
241		return $transformers;
242		};
243
244		return array(
245		new CachingTransformer($this, $sourceTransformers, $cacheManager)
246		);
247		}
248
249		/**
250		* Add resources for kernel
251		*
252		* @param AspectContainer $container
253		*/
254		protected function addKernelResourcesToContainer(AspectContainer $container)
255		{
256		$trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 2);
257		$refClass = new \ReflectionObject($this);
258
259		$container->addResource($trace[1]['file']);
260		$container->addResource($refClass->getFileName());
261		}
262		}
263

goaop / framework

Pull Request — master (#240)

AspectKernel::getInstance() A

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