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by Michael

created 2022-08-12 09:18 UTC

CallProxy::findForwardingInstance() A

↳ Parent: CallProxy

Complexity

Conditions	4
Paths	3

Size

Total Lines	10
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	7
CRAP Score	4

Importance

Changes	2
Bugs	0	Features	0

Metric	Value
cc	4
eloc	6
c	2
b	0
f	0
nc	3
nop	0
dl	0
loc	10
ccs	7
cts	7
cp	1
crap	4
rs	10

<?php

declare(strict_types=1);

namespace MichaelRubel\EnhancedContainer\Core;

use Illuminate\Support\Str;
use Illuminate\Support\Traits\ForwardsCalls;
use MichaelRubel\EnhancedContainer\Call;
use MichaelRubel\EnhancedContainer\Exceptions\InstanceInteractionException;
use MichaelRubel\EnhancedContainer\Traits\InteractsWithContainer;

class CallProxy implements Call
{
    use InteractsWithContainer, ForwardsCalls;


    /**
     * Current proxy instance.
     *
     * @var object
     */
    protected object $instance;

    /**
     * Previous proxy instance.
     *
     * @var object|null
     */
    protected ?object $previous = null;

    /**
     * Determines if the forwarding is enabled in this proxy.
     *
     * @var bool
     */
    protected bool $forwarding = true;

    /**
     * Saves proxy interactions (method calls, property assignments, etc).
     *
     * @var array
     */
    protected array $interactions = [];

    /**
     * Initialize a new CallProxy.
     *
     * @param  object|string  $class
     * @param  array  $dependencies
     * @param  string|null  $context
     */
    public function __construct(object|string $class, array $dependencies = [], ?string $context = null)
    {
        $this->instance = $this->getInstance($class, $dependencies, $context);
    }

    /**
     * Gets the internal property by name.
     *
     * @param  string  $property
     *
     * @return mixed
     */
    public function getInternal(string $property): mixed
    {
        return $this->{$property};
    }

    /**
     * Sets the internal instance to previous one.
     *
     * @return static
     */
    public function setPrevious(): static
    {
        if ($this->previous) {
            $oldInstance = $this->instance;

            $this->instance = $this->previous;

            $this->previous = $oldInstance;
        }

        return $this;
    }

    /**
     * Disables the forwarding on the proxy level.
     *
     * @return static
     */
    public function disableForwarding(): static
    {
        $this->forwarding = false;

        return $this;
    }

    /**
     * Enables the forwarding on the proxy level.
     *
     * @return static
     */
    public function enableForwarding(): static
    {
        $this->forwarding = true;

        return $this;
    }

    /**
     * Perform the container call.
     *
     * @param  object  $service
     * @param  string  $method
     * @param  array  $parameters
     *
     * @return mixed
     */
    protected function containerCall(object $service, string $method, array $parameters): mixed
    {
        try {
            return app()->call(
                [$service, $method],
                $this->getParameters($service, $method, $parameters)
            );
        } catch (\ReflectionException) {
            return $this->forwardCallTo($service, $method, $parameters);
        }
    }

    /**
     * Find the forwarding instance if bound.
     *
     * @return void
     */
    protected function findForwardingInstance(): void
    {
        $clue = $this->instance::class . Forwarding::CONTAINER_KEY;

        if ($this->forwarding && app()->bound($clue)) {
            $newInstance = rescue(fn () => app($clue), report: false);

            if (! is_null($newInstance)) {
                $this->previous = $this->instance;
                $this->instance = $newInstance;
            }
        }
    }

    /**
     * Save the interaction with proxy.
     *
     * @param  string  $name
     * @param  string  $type
     *
     * @return void
     */
    protected function interact(string $name, string $type): void
    {
        $this->interactions[$name] = $type;
    }

    /**
     * Check the proxy has previous interaction
     * with the same method or property.
     *
     * @param  string  $name
     *
     * @return bool
     */
    protected function hasPreviousInteraction(string $name): bool
    {
        return $this->forwarding && $this->previous && isset($this->interactions[$name]);
    }

    /**
     * Handle the missing by error message.
     *
     * @param  \Closure  $callback
     * @param  string  $by
     *
     * @return mixed
     */
    protected function handleMissing(\Closure $callback, string $by): mixed
    {
        try {
            return $callback();
        } catch (\Error|\ErrorException $e) {
            if (Str::contains($e->getMessage(), $by)) {
                $this->findForwardingInstance();

                return $callback();
            }

            throw $e;
        }
    }

    /**
     * Pass the call through container.
     *
     * @param  string  $method
     * @param  array  $parameters
     *
     * @return mixed
     */
    public function __call(string $method, array $parameters): mixed
    {
        if (! method_exists($this->instance, $method)) {
            if ($this->hasPreviousInteraction($method)) {
                throw new InstanceInteractionException;
            }

            $this->findForwardingInstance();
        }

        $this->interact($method, Call::METHOD);

        return $this->handleMissing(
            fn () => $this->containerCall($this->instance, $method, $parameters),
            by: 'Call to undefined method'
        );
    }

    /**
     * Get the instance's property.
     *
     * @param  string  $name
     *
     * @return mixed
     */
    public function __get(string $name): mixed
    {
        if (! property_exists($this->instance, $name)) {
            if ($this->hasPreviousInteraction($name)) {
                throw new InstanceInteractionException;
            }

            $this->findForwardingInstance();
        }

        $this->interact($name, Call::GET);

        return $this->handleMissing(
            fn () => $this->instance->{$name},
            by: 'Undefined property'
        );
    }

    /**
     * Set the instance's property.
     *
     * @param  string  $name
     * @param  mixed  $value
     */
    public function __set(string $name, mixed $value): void
    {
        $this->interact($name, Call::SET);

        $this->instance->{$name} = $value;
    }

    /**
     * Check the property is set.
     *
     * @param  string  $name
     *
     * @return bool
     */
    public function __isset(string $name): bool
    {
        $this->interact($name, Call::ISSET);

        return isset($this->instance->{$name});
    }

    /**
     * Unset the property.
     *
     * @param  string  $name
     *
     * @return void
     */
    public function __unset(string $name): void
    {
        $this->interact($name, Call::UNSET);

        unset($this->instance->{$name});
    }
}


1		<?php
2
3		declare(strict_types=1);
4
5		namespace MichaelRubel\EnhancedContainer\Core;
6
7		use Illuminate\Support\Str;
8		use Illuminate\Support\Traits\ForwardsCalls;
9		use MichaelRubel\EnhancedContainer\Call;
10		use MichaelRubel\EnhancedContainer\Exceptions\InstanceInteractionException;
11		use MichaelRubel\EnhancedContainer\Traits\InteractsWithContainer;
12
13		class CallProxy implements Call
14		{
15		use InteractsWithContainer, ForwardsCalls;
		0 ignored issues – show introduced 2022-07-05 21:35 UTC by Report Bug Copy Issue Report The trait `MichaelRubel\EnhancedCon...\InteractsWithContainer` requires some properties which are not provided by `MichaelRubel\EnhancedContainer\Core\CallProxy`: `$contextual`, `$map` Loading history...
16
17		/**
18		* Current proxy instance.
19		*
20		* @var object
21		*/
22		protected object $instance;
23
24		/**
25		* Previous proxy instance.
26		*
27		* @var object\|null
28		*/
29		protected ?object $previous = null;
30
31		/**
32		* Determines if the forwarding is enabled in this proxy.
33		*
34		* @var bool
35		*/
36		protected bool $forwarding = true;
37
38		/**
39		* Saves proxy interactions (method calls, property assignments, etc).
40		*
41		* @var array
42		*/
43		protected array $interactions = [];
44
45		/**
46		* Initialize a new CallProxy.
47		*
48		* @param object\|string $class
49		* @param array $dependencies
50		* @param string\|null $context
51		*/
52	67	public function __construct(object\|string $class, array $dependencies = [], ?string $context = null)
53		{
54	67	$this->instance = $this->getInstance($class, $dependencies, $context);
55		}
56
57		/**
58		* Gets the internal property by name.
59		*
60		* @param string $property
61		*
62		* @return mixed
63		*/
64	15	public function getInternal(string $property): mixed
65		{
66	15	return $this->{$property};
67		}
68
69		/**
70		* Sets the internal instance to previous one.
71		*
72		* @return static
73		*/
74	1	public function setPrevious(): static
75		{
76	1	if ($this->previous) {
77	1	$oldInstance = $this->instance;
78
79	1	$this->instance = $this->previous;
80
81	1	$this->previous = $oldInstance;
82		}
83
84	1	return $this;
85		}
86
87		/**
88		* Disables the forwarding on the proxy level.
89		*
90		* @return static
91		*/
92	2	public function disableForwarding(): static
93		{
94	2	$this->forwarding = false;
95
96	2	return $this;
97		}
98
99		/**
100		* Enables the forwarding on the proxy level.
101		*
102		* @return static
103		*/
104	1	public function enableForwarding(): static
105		{
106	1	$this->forwarding = true;
107
108	1	return $this;
109		}
110
111		/**
112		* Perform the container call.
113		*
114		* @param object $service
115		* @param string $method
116		* @param array $parameters
117		*
118		* @return mixed
119		*/
120	55	protected function containerCall(object $service, string $method, array $parameters): mixed
121		{
122		try {
123	55	return app()->call(
124	55	[$service, $method],
125	55	$this->getParameters($service, $method, $parameters)
126		);
127	11	} catch (\ReflectionException) {
128	2	return $this->forwardCallTo($service, $method, $parameters);
129		}
130		}
131
132		/**
133		* Find the forwarding instance if bound.
134		*
135		* @return void
136		*/
137	17	protected function findForwardingInstance(): void
138		{
139	17	$clue = $this->instance::class . Forwarding::CONTAINER_KEY;
140
141	17	if ($this->forwarding && app()->bound($clue)) {
142	13	$newInstance = rescue(fn () => app($clue), report: false);
143
144	13	if (! is_null($newInstance)) {
145	13	$this->previous = $this->instance;
146	13	$this->instance = $newInstance;
147		}
148		}
149		}
150
151		/**
152		* Save the interaction with proxy.
153		*
154		* @param string $name
155		* @param string $type
156		*
157		* @return void
158		*/
159	65	protected function interact(string $name, string $type): void
160		{
161	65	$this->interactions[$name] = $type;
162		}
163
164		/**
165		* Check the proxy has previous interaction
166		* with the same method or property.
167		*
168		* @param string $name
169		*
170		* @return bool
171		*/
172	17	protected function hasPreviousInteraction(string $name): bool
173		{
174	17	return $this->forwarding && $this->previous && isset($this->interactions[$name]);
175		}
176
177		/**
178		* Handle the missing by error message.
179		*
180		* @param \Closure $callback
181		* @param string $by
182		*
183		* @return mixed
184		*/
185	64	protected function handleMissing(\Closure $callback, string $by): mixed
186		{
187		try {
188	64	return $callback();
189	13	} catch (\Error\|\ErrorException $e) {
190	9	if (Str::contains($e->getMessage(), $by)) {
191	6	$this->findForwardingInstance();
192
193	6	return $callback();
194		}
195
196	3	throw $e;
197		}
198		}
199
200		/**
201		* Pass the call through container.
202		*
203		* @param string $method
204		* @param array $parameters
205		*
206		* @return mixed
207		*/
208	55	public function __call(string $method, array $parameters): mixed
209		{
210	55	if (! method_exists($this->instance, $method)) {
211	15	if ($this->hasPreviousInteraction($method)) {
212	1	throw new InstanceInteractionException;
213		}
214
215	15	$this->findForwardingInstance();
216		}
217
218	55	$this->interact($method, Call::METHOD);
219
220	55	return $this->handleMissing(
221	55	fn () => $this->containerCall($this->instance, $method, $parameters),
222		by: 'Call to undefined method'
223		);
224		}
225
226		/**
227		* Get the instance's property.
228		*
229		* @param string $name
230		*
231		* @return mixed
232		*/
233	11	public function __get(string $name): mixed
234		{
235	11	if (! property_exists($this->instance, $name)) {
236	3	if ($this->hasPreviousInteraction($name)) {
237	1	throw new InstanceInteractionException;
238		}
239
240	2	$this->findForwardingInstance();
241		}
242
243	11	$this->interact($name, Call::GET);
244
245	11	return $this->handleMissing(
246	11	fn () => $this->instance->{$name},
247		by: 'Undefined property'
248		);
249		}
250
251		/**
252		* Set the instance's property.
253		*
254		* @param string $name
255		* @param mixed $value
256		*/
257	6	public function __set(string $name, mixed $value): void
258		{
259	6	$this->interact($name, Call::SET);
260
261	6	$this->instance->{$name} = $value;
262		}
263
264		/**
265		* Check the property is set.
266		*
267		* @param string $name
268		*
269		* @return bool
270		*/
271	1	public function __isset(string $name): bool
272		{
273	1	$this->interact($name, Call::ISSET);
274
275	1	return isset($this->instance->{$name});
276		}
277
278		/**
279		* Unset the property.
280		*
281		* @param string $name
282		*
283		* @return void
284		*/
285	1	public function __unset(string $name): void
286		{
287	1	$this->interact($name, Call::UNSET);
288
289	1	unset($this->instance->{$name});
290		}
291		}
292

michael-rubel / laravel-enhanced-container

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CallProxy::findForwardingInstance() A

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