Configurator::singleton() - Code Metrics - litphp/air - Measure and Improve Code Quality continuously with Scrutinizer

Configurator::singleton() A
last analyzed 2020-05-05 15:03 UTC

↳ Parent: Configurator

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

Metric	Value
eloc	1
dl	0
loc	3
ccs	2
cts	2
cp	1
rs	10
c	0
b	0
f	0
cc	1
nc	1
nop	2
crap	1

<?php

declare(strict_types=1);

namespace Lit\Air;

use Lit\Air\Psr\Container;
use Lit\Air\Psr\ContainerException;
use Lit\Air\Recipe\AbstractRecipe;
use Lit\Air\Recipe\AutowireRecipe;
use Lit\Air\Recipe\BuilderRecipe;
use Lit\Air\Recipe\Decorator\AbstractRecipeDecorator;
use Lit\Air\Recipe\Decorator\CallbackDecorator;
use Lit\Air\Recipe\Decorator\SingletonDecorator;
use Lit\Air\Recipe\FixedValueRecipe;
use Lit\Air\Recipe\InstanceRecipe;
use Lit\Air\Recipe\RecipeInterface;

/**
 * Configurator helps to build an array configuration, and writes array configuration into a container.
 * http://litphp.github.io/docs/air-config
 */
class Configurator
{
    protected static $decorators = [
        'callback' => CallbackDecorator::class,
        'singleton' => SingletonDecorator::class,
    ];

    /**
     * Write a configuration array into a container
     *
     * @param Container $container The container.
     * @param array     $config    The configuration array.
     * @param boolean   $force     Whether overwrite existing values.
     * @return void
     */
    public static function config(Container $container, array $config, bool $force = true): void
    {
        foreach ($config as $key => $value) {
            if (!$force && $container->has($key)) {
                continue;
            }
            self::write($container, $key, $value);
        }
    }

    /**
     * Convert a mixed value into a recipe.
     *
     * @param mixed $value The value.
     * @return RecipeInterface
     */
    public static function convertToRecipe($value): RecipeInterface
    {
        if (is_object($value) && $value instanceof RecipeInterface) {
            return $value;
        }

        if (is_callable($value)) {
            return (new BuilderRecipe($value))->singleton();
        }

        if (is_array($value)) {
            $r = self::convertArrayToRecipe($value);
            if ($r !== null) {
                return $r;
            }
            trigger_error("array should be wrapped with C::value", E_USER_NOTICE);
        }

        return AbstractRecipe::value($value);
    }

    /**
     * Configuration indicating a singleton
     *
     * @param string $classname The class name.
     * @param array  $extra     Extra parameters.
     * @return array
     */
    public static function singleton(string $classname, array $extra = []): array
    {
        return self::decorateSingleton(self::instance($classname, $extra));
    }

    /**
     * Decorate a configuration, makes it a singleton (\Lit\Air\Recipe\Decorator\SingletonDecorator)
     *
     * @param array $config The configuration.
     * @return array
     */
    public static function decorateSingleton(array $config): array
    {
        $config['decorator'] = $config['decorator'] ?? [];
        $config['decorator']['singleton'] = true;

        return $config;
    }

    /**
     * Decorate a configuration with provided callback
     *
     * @param array    $config   The configuration.
     * @param callable $callback The callback.
     * @return array
     */
    public static function decorateCallback(array $config, callable $callback): array
    {
        $config['decorator'] = $config['decorator'] ?? [];
        $config['decorator']['callback'] = $callback;

        return $config;
    }

    /**
     * Configuration indicating an autowired entry.
     *
     * @param string $classname The class name.
     * @param array  $extra     Extra parameters.
     * @param bool   $cached    Whether to save the instance if it's not defined in container.
     * @return array
     */
    public static function produce(string $classname, array $extra = [], bool $cached = true): array
    {
        return [
            '$' => 'autowire',
            $classname,
            $extra,
            $cached,
        ];
    }

    /**
     * Configuration indicating an instance created by factory.
     *
     * @param string $classname The class name.
     * @param array  $extra     Extra parameters.
     * @return array
     */
    public static function instance(string $classname, array $extra = []): array
    {
        return [
            '$' => 'instance',
            $classname,
            $extra,
        ];
    }

    /**
     * Configuration indicating an alias
     *
     * @param string ...$key Multiple keys will be auto joined.
     * @return array
     */
    public static function alias(string ...$key): array
    {
        return [
            '$' => 'alias',
            self::join(...$key),
        ];
    }

    /**
     * Configuration wrapping a builder method
     *
     * @param callable $builder The builder method.
     * @param array    $extra   Extra parameters.
     * @return array
     */
    public static function builder(callable $builder, array $extra = []): array
    {
        return [
            '$' => 'builder',
            $builder,
            $extra,
        ];
    }

    /**
     * Configuration wraps an arbitary value. For arrays it's recommended to always wrap with this.
     *
     * @param mixed $value The value.
     * @return array
     */
    public static function value($value): array
    {
        return [
            '$' => 'value',
            $value,
        ];
    }

    protected static function write(Container $container, $key, $value)
    {
        if (is_scalar($value) || is_resource($value)) {
            $container->set($key, $value);
            return;
        }

        if (
            substr($key, -2) === '::'
            && class_exists(substr($key, 0, -2))
        ) {
            $container->set($key, self::mapArrayValueToRecipe($value));
            return;
        }

        $recipe = self::convertToRecipe($value);

        if ($recipe instanceof FixedValueRecipe) {
            $container->set($key, $recipe->getValue());
        } else {
            $container->flush($key);
            $container->define($key, $recipe);
        }
    }

    protected static function mapArrayValueToRecipe(array $arr): array
    {
        $result = [];
        foreach ($arr as $k => $v) {
            $result[$k] = self::convertToRecipe($v);
            if ($result[$k] instanceof FixedValueRecipe) {
                $result[$k] = $result[$k]->getValue();
            }
        }

        return $result;
    }

    protected static function convertArrayToRecipe(array $arr): ?RecipeInterface
    {
        if (array_key_exists(0, $arr) && !empty($arr['$'])) {
            return self::makeRecipe($arr);
        }

        if (Utils::isSequentialArray($arr, 1) && is_string($arr[0])) {
            return new AutowireRecipe($arr[0], [], false);
        }

        if (Utils::isSequentialArray($arr, 2) && is_string($arr[0]) && class_exists($arr[0])) {
            return new InstanceRecipe($arr[0], $arr[1]);
        }

        return null;
    }

    protected static function makeRecipe(array $arr): RecipeInterface
    {
        $type = $arr['$'];
        unset($arr['$']);

        if (
            array_key_exists($type, [
            'alias' => 1,
            'autowire' => 1,
            'instance' => 1,
            'builder' => 1,
            'value' => 1,
            ])
        ) {
            $valueDecorator = $arr['decorator'] ?? null;
            unset($arr['decorator']);

            $builder = [AbstractRecipe::class, $type];
            assert(is_callable($builder));
            /**
             * @var RecipeInterface $recipe
             */
            $recipe = $builder(...$arr);

            if ($valueDecorator) {
                $recipe = self::wrapRecipeWithDecorators($valueDecorator, $recipe);
            }

            return $recipe;
        }

        throw new ContainerException("cannot understand given recipe");
    }

    /**
     * Apply decorators to a recipe and return the decorated recipe
     *
     * @param array           $decorators Assoc array of decorator names => options.
     * @param RecipeInterface $recipe     The decorated recipe instance.
     * @return RecipeInterface
     */
    protected static function wrapRecipeWithDecorators(array $decorators, RecipeInterface $recipe): RecipeInterface
    {
        foreach ($decorators as $name => $option) {
            if (isset(self::$decorators[$name])) {
                $decorateFn = [self::$decorators[$name], 'decorate'];
                assert(is_callable($decorateFn));
                $recipe = call_user_func($decorateFn, $recipe);
            } elseif (is_subclass_of($name, AbstractRecipeDecorator::class)) {
                $decorateFn = [$name, 'decorate'];
                assert(is_callable($decorateFn));
                $recipe = call_user_func($decorateFn, $recipe);
            } else {
                throw new ContainerException("cannot understand recipe decorator [$name]");
            }

            assert($recipe instanceof AbstractRecipeDecorator);
            if (!empty($option)) {
                $recipe->setOption($option);
            }
        }

        return $recipe;
    }

    /**
     * Join multiple strings with air conventional separator `::`
     *
     * @param string ...$args Parts of the key to be joined.
     * @return string
     */
    public static function join(string ...$args): string
    {
        return implode('::', $args);
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace Lit\Air;
6
7		use Lit\Air\Psr\Container;
8		use Lit\Air\Psr\ContainerException;
9		use Lit\Air\Recipe\AbstractRecipe;
10		use Lit\Air\Recipe\AutowireRecipe;
11		use Lit\Air\Recipe\BuilderRecipe;
12		use Lit\Air\Recipe\Decorator\AbstractRecipeDecorator;
13		use Lit\Air\Recipe\Decorator\CallbackDecorator;
14		use Lit\Air\Recipe\Decorator\SingletonDecorator;
15		use Lit\Air\Recipe\FixedValueRecipe;
16		use Lit\Air\Recipe\InstanceRecipe;
17		use Lit\Air\Recipe\RecipeInterface;
18
19		/**
20		* Configurator helps to build an array configuration, and writes array configuration into a container.
21		* http://litphp.github.io/docs/air-config
22		*/
23		class Configurator
24		{
25		protected static $decorators = [
26		'callback' => CallbackDecorator::class,
27		'singleton' => SingletonDecorator::class,
28		];
29
30		/**
31		* Write a configuration array into a container
32		*
33		* @param Container $container The container.
34		* @param array $config The configuration array.
35		* @param boolean $force Whether overwrite existing values.
36		* @return void
37		*/
38	1	public static function config(Container $container, array $config, bool $force = true): void
39		{
40	1	foreach ($config as $key => $value) {
41	1	if (!$force && $container->has($key)) {
42		continue;
43		}
44	1	self::write($container, $key, $value);
45		}
46	1	}
47
48		/**
49		* Convert a mixed value into a recipe.
50		*
51		* @param mixed $value The value.
52		* @return RecipeInterface
53		*/
54	6	public static function convertToRecipe($value): RecipeInterface
55		{
56	6	if (is_object($value) && $value instanceof RecipeInterface) {
57	2	return $value;
58		}
59
60	5	if (is_callable($value)) {
61	1	return (new BuilderRecipe($value))->singleton();
62		}
63
64	4	if (is_array($value)) {
65	2	$r = self::convertArrayToRecipe($value);
66	2	if ($r !== null) {
67	2	return $r;
68		}
69		trigger_error("array should be wrapped with C::value", E_USER_NOTICE);
70		}
71
72	3	return AbstractRecipe::value($value);
73		}
74
75		/**
76		* Configuration indicating a singleton
77		*
78		* @param string $classname The class name.
79		* @param array $extra Extra parameters.
80		* @return array
81		*/
82	1	public static function singleton(string $classname, array $extra = []): array
83		{
84	1	return self::decorateSingleton(self::instance($classname, $extra));
85		}
86
87		/**
88		* Decorate a configuration, makes it a singleton (\Lit\Air\Recipe\Decorator\SingletonDecorator)
89		*
90		* @param array $config The configuration.
91		* @return array
92		*/
93	1	public static function decorateSingleton(array $config): array
94		{
95	1	$config['decorator'] = $config['decorator'] ?? [];
96	1	$config['decorator']['singleton'] = true;
97
98	1	return $config;
99		}
100
101		/**
102		* Decorate a configuration with provided callback
103		*
104		* @param array $config The configuration.
105		* @param callable $callback The callback.
106		* @return array
107		*/
108	1	public static function decorateCallback(array $config, callable $callback): array
109		{
110	1	$config['decorator'] = $config['decorator'] ?? [];
111	1	$config['decorator']['callback'] = $callback;
112
113	1	return $config;
114		}
115
116		/**
117		* Configuration indicating an autowired entry.
118		*
119		* @param string $classname The class name.
120		* @param array $extra Extra parameters.
121		* @param bool $cached Whether to save the instance if it's not defined in container.
122		* @return array
123		*/
124	1	public static function produce(string $classname, array $extra = [], bool $cached = true): array
125		{
126		return [
127	1	'$' => 'autowire',
128	1	$classname,
129	1	$extra,
130	1	$cached,
131		];
132		}
133
134		/**
135		* Configuration indicating an instance created by factory.
136		*
137		* @param string $classname The class name.
138		* @param array $extra Extra parameters.
139		* @return array
140		*/
141	1	public static function instance(string $classname, array $extra = []): array
142		{
143		return [
144	1	'$' => 'instance',
145	1	$classname,
146	1	$extra,
147		];
148		}
149
150		/**
151		* Configuration indicating an alias
152		*
153		* @param string ...$key Multiple keys will be auto joined.
154		* @return array
155		*/
156	1	public static function alias(string ...$key): array
157		{
158		return [
159	1	'$' => 'alias',
160	1	self::join(...$key),
161		];
162		}
163
164		/**
165		* Configuration wrapping a builder method
166		*
167		* @param callable $builder The builder method.
168		* @param array $extra Extra parameters.
169		* @return array
170		*/
171	1	public static function builder(callable $builder, array $extra = []): array
172		{
173		return [
174	1	'$' => 'builder',
175	1	$builder,
176	1	$extra,
177		];
178		}
179
180		/**
181		* Configuration wraps an arbitary value. For arrays it's recommended to always wrap with this.
182		*
183		* @param mixed $value The value.
184		* @return array
185		*/
186	3	public static function value($value): array
187		{
188		return [
189	3	'$' => 'value',
190	3	$value,
191		];
192		}
193
194	1	protected static function write(Container $container, $key, $value)
195		{
196	1	if (is_scalar($value) \|\| is_resource($value)) {
197	1	$container->set($key, $value);
198	1	return;
199		}
200
201		if (
202	1	substr($key, -2) === '::'
203	1	&& class_exists(substr($key, 0, -2))
204		) {
205	1	$container->set($key, self::mapArrayValueToRecipe($value));
206	1	return;
207		}
208
209	1	$recipe = self::convertToRecipe($value);
210
211	1	if ($recipe instanceof FixedValueRecipe) {
212	1	$container->set($key, $recipe->getValue());
213		} else {
214	1	$container->flush($key);
215	1	$container->define($key, $recipe);
216		}
217	1	}
218
219	1	protected static function mapArrayValueToRecipe(array $arr): array
220		{
221	1	$result = [];
222	1	foreach ($arr as $k => $v) {
223	1	$result[$k] = self::convertToRecipe($v);
224	1	if ($result[$k] instanceof FixedValueRecipe) {
225	1	$result[$k] = $result[$k]->getValue();
226		}
227		}
228
229	1	return $result;
230		}
231
232	2	protected static function convertArrayToRecipe(array $arr): ?RecipeInterface
233		{
234	2	if (array_key_exists(0, $arr) && !empty($arr['$'])) {
235	2	return self::makeRecipe($arr);
236		}
237
238		if (Utils::isSequentialArray($arr, 1) && is_string($arr[0])) {
239		return new AutowireRecipe($arr[0], [], false);
240		}
241
242		if (Utils::isSequentialArray($arr, 2) && is_string($arr[0]) && class_exists($arr[0])) {
243		return new InstanceRecipe($arr[0], $arr[1]);
244		}
245
246		return null;
247		}
248
249	2	protected static function makeRecipe(array $arr): RecipeInterface
250		{
251	2	$type = $arr['$'];
252	2	unset($arr['$']);
253
254		if (
255	2	array_key_exists($type, [
256	2	'alias' => 1,
257		'autowire' => 1,
258		'instance' => 1,
259		'builder' => 1,
260		'value' => 1,
261		])
262		) {
263	2	$valueDecorator = $arr['decorator'] ?? null;
264	2	unset($arr['decorator']);
265
266	2	$builder = [AbstractRecipe::class, $type];
267	2	assert(is_callable($builder));
268		/**
269		* @var RecipeInterface $recipe
270		*/
271	2	$recipe = $builder(...$arr);
272
273	2	if ($valueDecorator) {
274	1	$recipe = self::wrapRecipeWithDecorators($valueDecorator, $recipe);
275		}
276
277	2	return $recipe;
278		}
279
280		throw new ContainerException("cannot understand given recipe");
281		}
282
283		/**
284		* Apply decorators to a recipe and return the decorated recipe
285		*
286		* @param array $decorators Assoc array of decorator names => options.
287		* @param RecipeInterface $recipe The decorated recipe instance.
288		* @return RecipeInterface
289		*/
290	1	protected static function wrapRecipeWithDecorators(array $decorators, RecipeInterface $recipe): RecipeInterface
291		{
292	1	foreach ($decorators as $name => $option) {
293	1	if (isset(self::$decorators[$name])) {
294		$decorateFn = [self::$decorators[$name], 'decorate'];
295		assert(is_callable($decorateFn));
296		$recipe = call_user_func($decorateFn, $recipe);
297	1	} elseif (is_subclass_of($name, AbstractRecipeDecorator::class)) {
298	1	$decorateFn = [$name, 'decorate'];
299	1	assert(is_callable($decorateFn));
300	1	$recipe = call_user_func($decorateFn, $recipe);
301		} else {
302		throw new ContainerException("cannot understand recipe decorator [$name]");
303		}
304
305	1	assert($recipe instanceof AbstractRecipeDecorator);
306	1	if (!empty($option)) {
307	1	$recipe->setOption($option);
308		}
309		}
310
311	1	return $recipe;
312		}
313
314		/**
315		* Join multiple strings with air conventional separator `::`
316		*
317		* @param string ...$args Parts of the key to be joined.
318		* @return string
319		*/
320	1	public static function join(string ...$args): string
321		{
322	1	return implode('::', $args);
323		}
324		}
325

litphp / air

Configurator::singleton() A last analyzed 2020-05-05 15:03 UTC

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Configurator::singleton() A
last analyzed 2020-05-05 15:03 UTC