InstanceSettingsProvider::__construct() - Code Metrics - limoncello-php-dist/application - Measure and Improve Code Quality continuously with Scrutinizer

InstanceSettingsProvider::__construct() A
last analyzed 2020-02-09 15:57 UTC

↳ Parent: InstanceSettingsProvider

Complexity

Conditions	1
Paths	1

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

Metric	Value
dl	0
loc	4
ccs	2
cts	2
cp	1
rs	10
c	0
b	0
f	0
cc	1
nc	1
nop	1
crap	1

<?php declare(strict_types=1);

namespace Limoncello\Application\Settings;

/**
 * Copyright 2015-2020 [email protected]
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

use Limoncello\Application\Exceptions\AlreadyRegisteredSettingsException;
use Limoncello\Application\Exceptions\AmbiguousSettingsException;
use Limoncello\Application\Exceptions\NotRegisteredSettingsException;
use Limoncello\Contracts\Settings\SettingsInterface;
use Limoncello\Contracts\Settings\SettingsProviderInterface;
use function array_key_exists;
use function assert;
use function class_implements;
use function class_parents;
use function count;
use function get_class;
use function is_subclass_of;

/**
 * @package Limoncello\Application
 */
class InstanceSettingsProvider implements SettingsProviderInterface
{
    /**
     * @var array
     */
    private $applicationData;

    /**
     * @var SettingsInterface[]
     */
    private $instances = [];

    /**
     * @var bool
     */
    private $isProcessed = true;

    /**
     * @var array
     */
    private $settingsMap = [];

    /**
     * @var array
     */
    private $settingsData = [];

    /**
     * @var array
     */
    private $ambiguousMap = [];

    /**
     * @param array $applicationData
     */
    public function __construct(array $applicationData)
    {
        $this->applicationData = $applicationData;
    }

    /**
     * @inheritdoc
     */
    public function has(string $className): bool
    {
        $this->checkInstancesAreProcessed();

        $result = array_key_exists($className, $this->getSettingsMap());

        return $result;
    }

    /**
     * @param string $className
     *
     * @return array
     */
    public function get(string $className): array
    {
        if ($this->has($className) === false) {
            if (array_key_exists($className, $this->ambiguousMap) === true) {
                throw new AmbiguousSettingsException($className);
            }
            throw new NotRegisteredSettingsException($className);
        }

        $index = $this->settingsMap[$className];
        $data  = $this->settingsData[$index];

        return $data;
    }

    /**
     * @param SettingsInterface $settings
     *
     * @return InstanceSettingsProvider
     */
    public function register(SettingsInterface $settings): InstanceSettingsProvider
    {
        $className = get_class($settings);
        if (array_key_exists($className, $this->instances) === true) {
            throw new AlreadyRegisteredSettingsException($className);
        }

        $this->instances[$className] = $settings;
        $this->isProcessed           = false;

        return $this;
    }

    /**
     * @return array
     */
    public function getSettingsMap(): array
    {
        $this->checkInstancesAreProcessed();

        return $this->settingsMap;
    }

    /**
     * @return array
     */
    public function getSettingsData(): array
    {
        $this->checkInstancesAreProcessed();

        return $this->settingsData;
    }

    /**
     * @return array
     */
    public function getAmbiguousMap(): array
    {
        $this->checkInstancesAreProcessed();

        return $this->ambiguousMap;
    }

    /**
     * @inheritdoc
     */
    public function isAmbiguous(string $className): bool
    {
        $result = array_key_exists($className, $this->getAmbiguousMap());

        return $result;
    }

    /**
     * @return array
     */
    protected function getApplicationData(): array
    {
        return $this->applicationData;
    }

    /**
     * @return void
     */
    private function checkInstancesAreProcessed(): void
    {
        $this->isProcessed === true ?: $this->processInstances();
    }

    /**
     * @return void
     *
     * @SuppressWarnings(PHPMD.ElseExpression)
     */
    private function processInstances(): void
    {
        $preliminaryMap = [];
        foreach ($this->instances as $instance) {
            $preliminaryMap[get_class($instance)][] = $instance;
            foreach (class_parents($instance) as $parentClass) {
                $preliminaryMap[$parentClass][] = $instance;
            }
            foreach (class_implements($instance) as $parentClass) {
                $preliminaryMap[$parentClass][] = $instance;
            }
        }

        $nextIndex    = 0;
        $hashMap      = []; // hash  => index
        $settingsData = []; // index => instance data
        $getIndex     = function (SettingsInterface $instance) use (&$nextIndex, &$hashMap, &$settingsData): int {
            $hash = spl_object_hash($instance);
            if (array_key_exists($hash, $hashMap) === true) {
                $index = $hashMap[$hash];
            } else {
                $hashMap[$hash]           = $nextIndex;
                $settingsData[$nextIndex] = $instance->get($this->getApplicationData());
                $index                    = $nextIndex++;
            }

            return $index;
        };

        $settingsMap  = []; // class => index
        $ambiguousMap = []; // class => true
        foreach ($preliminaryMap as $class => $instanceList) {
            if (count($instanceList) === 1) {
                $selected = $instanceList[0];
            } else {
                $selected = $this->selectChildSettings($instanceList);
            }
            if ($selected !== null) {
                $settingsMap[$class] = $getIndex($selected);
            } else {
                $ambiguousMap[$class] = true;
            }
        }

        $this->settingsMap  = $settingsMap;
        $this->settingsData = $settingsData;
        $this->ambiguousMap = $ambiguousMap;
        $this->isProcessed  = true;
    }

    /**
     * @param SettingsInterface[] $instanceList
     *
     * @return SettingsInterface|null
     */
    private function selectChildSettings(array $instanceList): ?SettingsInterface
    {
        $count = count($instanceList);
        assert($count > 1);
        $selected = $this->selectChildSettingsAmongTwo($instanceList[0], $instanceList[1]);
        if ($selected !== null) {
            for ($index = 2; $index < $count; ++$index) {
                $selected = $this->selectChildSettingsAmongTwo($selected, $instanceList[$index]);
                if ($selected === null) {
                    break;
                }
            }
        }

        return $selected;
    }

    /**
     * @param SettingsInterface $instance1
     * @param SettingsInterface $instance2
     *
     * @return SettingsInterface|null
     */
    private function selectChildSettingsAmongTwo(
        SettingsInterface $instance1,
        SettingsInterface $instance2
    ): ?SettingsInterface {
        return is_subclass_of($instance1, get_class($instance2)) === true ?
            $instance1 : (is_subclass_of($instance2, get_class($instance1)) === true ? $instance2 : null);
    }
}


1		<?php declare(strict_types=1);
2
3		namespace Limoncello\Application\Settings;
4
5		/**
6		* Copyright 2015-2020 [email protected]
7		*
8		* Licensed under the Apache License, Version 2.0 (the "License");
9		* you may not use this file except in compliance with the License.
10		* You may obtain a copy of the License at
11		*
12		* http://www.apache.org/licenses/LICENSE-2.0
13		*
14		* Unless required by applicable law or agreed to in writing, software
15		* distributed under the License is distributed on an "AS IS" BASIS,
16		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17		* See the License for the specific language governing permissions and
18		* limitations under the License.
19		*/
20
21		use Limoncello\Application\Exceptions\AlreadyRegisteredSettingsException;
22		use Limoncello\Application\Exceptions\AmbiguousSettingsException;
23		use Limoncello\Application\Exceptions\NotRegisteredSettingsException;
24		use Limoncello\Contracts\Settings\SettingsInterface;
25		use Limoncello\Contracts\Settings\SettingsProviderInterface;
26		use function array_key_exists;
27		use function assert;
28		use function class_implements;
29		use function class_parents;
30		use function count;
31		use function get_class;
32		use function is_subclass_of;
33
34		/**
35		* @package Limoncello\Application
36		*/
37		class InstanceSettingsProvider implements SettingsProviderInterface
38		{
39		/**
40		* @var array
41		*/
42		private $applicationData;
43
44		/**
45		* @var SettingsInterface[]
46		*/
47		private $instances = [];
48
49		/**
50		* @var bool
51		*/
52		private $isProcessed = true;
53
54		/**
55		* @var array
56		*/
57		private $settingsMap = [];
58
59		/**
60		* @var array
61		*/
62		private $settingsData = [];
63	13
64		/**
65	13	* @var array
66		*/
67		private $ambiguousMap = [];
68
69		/**
70		* @param array $applicationData
71	3	*/
72		public function __construct(array $applicationData)
73	3	{
74		$this->applicationData = $applicationData;
75	3	}
76
77	3	/**
78		* @inheritdoc
79		*/
80		public function has(string $className): bool
81		{
82		$this->checkInstancesAreProcessed();
83
84		$result = array_key_exists($className, $this->getSettingsMap());
85	3
86		return $result;
87	3	}
88	2
89	1	/**
90		* @param string $className
91	1	*
92		* @return array
93		*/
94	1	public function get(string $className): array
95	1	{
96		if ($this->has($className) === false) {
97	1	if (array_key_exists($className, $this->ambiguousMap) === true) {
98		throw new AmbiguousSettingsException($className);
99		}
100		throw new NotRegisteredSettingsException($className);
101		}
102
103		$index = $this->settingsMap[$className];
104		$data = $this->settingsData[$index];
105	9
106		return $data;
107	9	}
108	9
109	1	/**
110		* @param SettingsInterface $settings
111		*
112	9	* @return InstanceSettingsProvider
113	9	*/
114		public function register(SettingsInterface $settings): InstanceSettingsProvider
115	9	{
116		$className = get_class($settings);
117		if (array_key_exists($className, $this->instances) === true) {
118		throw new AlreadyRegisteredSettingsException($className);
119		}
120
121	9	$this->instances[$className] = $settings;
122		$this->isProcessed = false;
123	9
124		return $this;
125	9	}
126
127		/**
128		* @return array
129		*/
130		public function getSettingsMap(): array
131	7	{
132		$this->checkInstancesAreProcessed();
133	7
134		return $this->settingsMap;
135	7	}
136
137		/**
138		* @return array
139		*/
140		public function getSettingsData(): array
141	7	{
142		$this->checkInstancesAreProcessed();
143	7
144		return $this->settingsData;
145	7	}
146
147		/**
148		* @return array
149		*/
150		public function getAmbiguousMap(): array
151	1	{
152		$this->checkInstancesAreProcessed();
153	1
154		return $this->ambiguousMap;
155	1	}
156
157		/**
158		* @inheritdoc
159		*/
160		public function isAmbiguous(string $className): bool
161	8	{
162		$result = array_key_exists($className, $this->getAmbiguousMap());
163	8
164		return $result;
165		}
166
167		/**
168		* @return array
169	9	*/
170		protected function getApplicationData(): array
171	9	{
172		return $this->applicationData;
173		}
174
175		/**
176		* @return void
177		*/
178		private function checkInstancesAreProcessed(): void
179	8	{
180		$this->isProcessed === true ?: $this->processInstances();
181	8	}
182	8
183	8	/**
184	8	* @return void
185	7	*
186		* @SuppressWarnings(PHPMD.ElseExpression)
187	8	*/
188	8	private function processInstances(): void
189		{
190		$preliminaryMap = [];
191		foreach ($this->instances as $instance) {
192	8	$preliminaryMap[get_class($instance)][] = $instance;
193	8	foreach (class_parents($instance) as $parentClass) {
194	8	$preliminaryMap[$parentClass][] = $instance;
195		}
196	8	foreach (class_implements($instance) as $parentClass) {
197	8	$preliminaryMap[$parentClass][] = $instance;
198	8	}
199		}
200	8
201	8	$nextIndex = 0;
202	8	$hashMap = []; // hash => index
203		$settingsData = []; // index => instance data
204		$getIndex = function (SettingsInterface $instance) use (&$nextIndex, &$hashMap, &$settingsData): int {
205	8	$hash = spl_object_hash($instance);
206	8	if (array_key_exists($hash, $hashMap) === true) {
207		$index = $hashMap[$hash];
208	8	} else {
209	8	$hashMap[$hash] = $nextIndex;
210	8	$settingsData[$nextIndex] = $instance->get($this->getApplicationData());
211	8	$index = $nextIndex++;
212	8	}
213
214	7	return $index;
215		};
216	8
217	8	$settingsMap = []; // class => index
218		$ambiguousMap = []; // class => true
219	8	foreach ($preliminaryMap as $class => $instanceList) {
220		if (count($instanceList) === 1) {
221		$selected = $instanceList[0];
222		} else {
223	8	$selected = $this->selectChildSettings($instanceList);
224	8	}
225	8	if ($selected !== null) {
226	8	$settingsMap[$class] = $getIndex($selected);
227		} else {
228		$ambiguousMap[$class] = true;
229		}
230		}
231
232		$this->settingsMap = $settingsMap;
233		$this->settingsData = $settingsData;
234	7	$this->ambiguousMap = $ambiguousMap;
235		$this->isProcessed = true;
236	7	}
237	7
238	7	/**
239	7	* @param SettingsInterface[] $instanceList
240	7	*
241	7	* @return SettingsInterface\|null
242	7	*/
243	7	private function selectChildSettings(array $instanceList): ?SettingsInterface
244		{
245		$count = count($instanceList);
246		assert($count > 1);
247		$selected = $this->selectChildSettingsAmongTwo($instanceList[0], $instanceList[1]);
248	7	if ($selected !== null) {
249		for ($index = 2; $index < $count; ++$index) {
250		$selected = $this->selectChildSettingsAmongTwo($selected, $instanceList[$index]);
251		if ($selected === null) {
252		break;
253		}
254		}
255		}
256
257	7	return $selected;
258		}
259
260		/**
261	7	* @param SettingsInterface $instance1
262	7	* @param SettingsInterface $instance2
263		*
264		* @return SettingsInterface\|null
265		*/
266		private function selectChildSettingsAmongTwo(
267		SettingsInterface $instance1,
268		SettingsInterface $instance2
269		): ?SettingsInterface {
270		return is_subclass_of($instance1, get_class($instance2)) === true ?
271		$instance1 : (is_subclass_of($instance2, get_class($instance1)) === true ? $instance2 : null);
272		}
273		}
274

limoncello-php-dist / application

InstanceSettingsProvider::__construct() A last analyzed 2020-02-09 15:57 UTC

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InstanceSettingsProvider::__construct() A
last analyzed 2020-02-09 15:57 UTC