AbstractContainer::resolve() - Code Metrics - Inspection of "Refactored" - samsonframework/di - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( cf3632...f41966 )

by Vitaly

created 2016-01-26 20:49 UTC

AbstractContainer::resolve() A

↳ Parent: AbstractContainer

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	0
CRAP Score	2

Importance

Changes	1
Bugs	0	Features	1

Metric	Value
c	1
b	0
f	1
dl	0
loc	6
ccs	0
cts	3
cp	0
rs	9.4285
cc	1
eloc	3
nc	1
nop	2
crap	2

<?php
/**
 * Created by Vitaly Iegorov <[email protected]>.
 * on 22.01.16 at 23:53
 */
namespace samsonframework\di;

use Interop\Container\ContainerInterface;
use samsonframework\di\exception\ContainerException;
use samsonframework\di\exception\NotFoundException;
use samsonphp\generator\Generator;

/**
 * Abstract dependency injection container.
 *
 * @package samsonframework\di
 */
abstract class AbstractContainer implements ContainerInterface
{
    /** Default logic function name */
    const LOGIC_FUNCTION_NAME = 'diContainer';

    /** @var array[string] Collection of alias => class name for alias resolving */
    protected $aliases = array();

    /** @var array[string] Collection of entity name resolving */
    protected $resolver = array();

    /** @var array[string] Collection of class name dependencies trees */
    protected $dependencies = array();

    /** @var ContainerInterface[] Collection of delegated containers */
    protected $delegates = array();

    /** @var array[string] Collection of dependency parameters */
    protected $parameters = array();

    /** @var \samsonphp\generator\Generator */
    protected $generator;

    /**
     * Container constructor.
     *
     * @param Generator $generator
     */
    public function __construct(Generator $generator)
    {
        $this->generator = $generator;
    }

    /**
     * Help container resolving interfaces and abstract classes or any entities to
     * different one.
     *
     * @param string $source Source entity name
     * @param string $destination Destination entity name
     *
     * @return self Chaining
     */
    public function resolve($source, $destination)
    {
        $this->resolver[$source] = $destination;

        return $this;
    }

    /**
     * Internal logic handler. Calls generated logic function
     * for performing entity creation or search. This is encapsulated
     * method for further overriding.
     *
     * @param string $alias Entity alias
     *
     * @return mixed Created instance or null
     */
    protected function logic($alias)
    {
        return call_user_func(self::LOGIC_FUNCTION_NAME, $alias);
    }

    /**
     * Finds an entry of the container by its identifier and returns it.
     *
     * @param string $alias Identifier of the entry to look for.
     *
     * @throws NotFoundException  No entry was found for this identifier.
     * @throws ContainerException Error while retrieving the entry.
     *
     * @return mixed Entry.
     */
    public function get($alias)
    {
        // Get pointer from logic
        $module = $this->logic($alias);

        // Try delegate lookup
        if (null === $module) {
            foreach ($this->delegates as $delegate) {
                try {
                    $module = $delegate->get($alias);
                } catch (ContainerException $e) {
                    // Catch all delegated exceptions
                } catch (NotFoundException $e) {
                    // Catch all delegated exceptions
                }
            }
        }

        if (null === $module) {
            throw new NotFoundException($alias);
        } else {
            if (!is_object($module)) {
                throw new ContainerException($alias);
            } else {
                return $module;
            }
        }
    }

    /**
     * Implementing delegate lookup feature.
     * If current container cannot resolve entity dependency
     * resolving process is passed to delegated container.
     *
     * @param ContainerInterface $container Container for delegate lookup
     */
    public function delegate(ContainerInterface $container)
    {
        $this->delegates[] = $container;
    }

    /**
     * Returns true if the container can return an entry for the given identifier.
     * Returns false otherwise.
     *
     * @param string $alias Identifier of the entry to look for.
     *
     * @return boolean
     */
    public function has($alias)
    {
        $found = array_key_exists($alias, $this->dependencies)
            || array_key_exists($alias, $this->aliases);

        if (!$found) {
            foreach ($this->delegates as $delegate) {
                if ($delegate->has($alias)) {
                    return true;
                }
            }
        }

        return $found;
    }

    /**
     * Generate logic conditions and their implementation for container and its delegates.
     *
     * @param string     $inputVariable Input condition parameter variable name
     * @param bool|false $started Flag if condition branching has been started
     */
    public function generateConditions($inputVariable = '$alias', $started = false)
    {
        // Iterate all container dependencies
        foreach ($this->dependencies as $alias => $entity) {
            // Generate condition statement to define if this class is needed
            $conditionFunc = !$started ? 'defIfCondition' : 'defElseIfCondition';

            // Output condition branch
            $this->generator->$conditionFunc($inputVariable . ' === \'' . $alias . '\'');

            // Generate condition for each dependency
            $this->generateCondition($alias, $entity);

            // Set flag that condition is started
            $started = true;
        }

        /** @var self $delegate Iterate delegated container to get their conditions */
        foreach ($this->delegates as $delegate) {
            // Set current generator
            $delegate->generator = $this->generator;
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
            $delegate->generateConditions($inputVariable, $started);
        }
    }

    /**
     * Generate dependency injection logic function.
     *
     * @param string $functionName
     *
     * @return string PHP logic function code
     */
    public function generateFunction($functionName = self::LOGIC_FUNCTION_NAME)
    {
        $inputVariable = '$aliasOrClassName';
        $this->generator
            ->defFunction($functionName, array($inputVariable))
            ->defVar('static $services')
            ->newLine();

        // Generate all container and delegate conditions
        $this->generateConditions($inputVariable, false);

        // Add method not found
        return $this->generator
            ->endIfCondition()
            ->endFunction()
            ->flush();
    }

    /**
     * Set container dependency.
     *
     * @param mixed         $entity Entity
     * @param string|null   $alias  Entity alias for simplier finding
     * @param array         $parameters Collection of additional parameters
     *
     * @return self Chaining
     */
    abstract public function set($entity, $alias = null, array $parameters = array());

    /**
     * Generate container dependency condition code.
     * @param string    $alias Entity alias
     * @param mixed     $entity Entity
     */
    abstract protected function generateCondition($alias, $entity);
}


1		<?php
2		/**
3		* Created by Vitaly Iegorov <[email protected]>.
4		* on 22.01.16 at 23:53
5		*/
6		namespace samsonframework\di;
7
8		use Interop\Container\ContainerInterface;
9		use samsonframework\di\exception\ContainerException;
10		use samsonframework\di\exception\NotFoundException;
11		use samsonphp\generator\Generator;
12
13		/**
14		* Abstract dependency injection container.
15		*
16		* @package samsonframework\di
17		*/
18		abstract class AbstractContainer implements ContainerInterface
19		{
20		/** Default logic function name */
21		const LOGIC_FUNCTION_NAME = 'diContainer';
22
23		/** @var array[string] Collection of alias => class name for alias resolving */
24		protected $aliases = array();
25
26		/** @var array[string] Collection of entity name resolving */
27		protected $resolver = array();
28
29		/** @var array[string] Collection of class name dependencies trees */
30		protected $dependencies = array();
31
32		/** @var ContainerInterface[] Collection of delegated containers */
33		protected $delegates = array();
34
35		/** @var array[string] Collection of dependency parameters */
36		protected $parameters = array();
37
38		/** @var \samsonphp\generator\Generator */
39		protected $generator;
40
41		/**
42		* Container constructor.
43		*
44		* @param Generator $generator
45		*/
46	2	public function __construct(Generator $generator)
47		{
48	2	$this->generator = $generator;
49	2	}
50
51		/**
52		* Help container resolving interfaces and abstract classes or any entities to
53		* different one.
54		*
55		* @param string $source Source entity name
56		* @param string $destination Destination entity name
57		*
58		* @return self Chaining
59		*/
60		public function resolve($source, $destination)
61		{
62		$this->resolver[$source] = $destination;
63
64		return $this;
65		}
66
67		/**
68		* Internal logic handler. Calls generated logic function
69		* for performing entity creation or search. This is encapsulated
70		* method for further overriding.
71		*
72		* @param string $alias Entity alias
73		*
74		* @return mixed Created instance or null
75		*/
76	1	protected function logic($alias)
77		{
78	1	return call_user_func(self::LOGIC_FUNCTION_NAME, $alias);
79		}
80
81		/**
82		* Finds an entry of the container by its identifier and returns it.
83		*
84		* @param string $alias Identifier of the entry to look for.
85		*
86		* @throws NotFoundException No entry was found for this identifier.
87		* @throws ContainerException Error while retrieving the entry.
88		*
89		* @return mixed Entry.
90		*/
91	1	public function get($alias)
92		{
93		// Get pointer from logic
94	1	$module = $this->logic($alias);
95
96		// Try delegate lookup
97	1	if (null === $module) {
98		foreach ($this->delegates as $delegate) {
99		try {
100		$module = $delegate->get($alias);
101		} catch (ContainerException $e) {
102		// Catch all delegated exceptions
103		} catch (NotFoundException $e) {
104		// Catch all delegated exceptions
105		}
106		}
107		}
108
109	1	if (null === $module) {
110		throw new NotFoundException($alias);
111		} else {
112	1	if (!is_object($module)) {
113		throw new ContainerException($alias);
114		} else {
115	1	return $module;
116		}
117		}
118		}
119
120		/**
121		* Implementing delegate lookup feature.
122		* If current container cannot resolve entity dependency
123		* resolving process is passed to delegated container.
124		*
125		* @param ContainerInterface $container Container for delegate lookup
126		*/
127	2	public function delegate(ContainerInterface $container)
128		{
129	2	$this->delegates[] = $container;
130	2	}
131
132		/**
133		* Returns true if the container can return an entry for the given identifier.
134		* Returns false otherwise.
135		*
136		* @param string $alias Identifier of the entry to look for.
137		*
138		* @return boolean
139		*/
140	1	public function has($alias)
141		{
142	1	$found = array_key_exists($alias, $this->dependencies)
143	1	\|\| array_key_exists($alias, $this->aliases);
144
145	1	if (!$found) {
146		foreach ($this->delegates as $delegate) {
147		if ($delegate->has($alias)) {
148		return true;
149		}
150		}
151		}
152
153	1	return $found;
154		}
155
156		/**
157		* Generate logic conditions and their implementation for container and its delegates.
158		*
159		* @param string $inputVariable Input condition parameter variable name
160		* @param bool\|false $started Flag if condition branching has been started
161		*/
162	2	public function generateConditions($inputVariable = '$alias', $started = false)
163		{
164		// Iterate all container dependencies
165	2	foreach ($this->dependencies as $alias => $entity) {
166		// Generate condition statement to define if this class is needed
167	2	$conditionFunc = !$started ? 'defIfCondition' : 'defElseIfCondition';
168
169		// Output condition branch
170	2	$this->generator->$conditionFunc($inputVariable . ' === \'' . $alias . '\'');
171
172		// Generate condition for each dependency
173	2	$this->generateCondition($alias, $entity);
174
175		// Set flag that condition is started
176	2	$started = true;
177	2	}
178
179		/** @var self $delegate Iterate delegated container to get their conditions */
180	2	foreach ($this->delegates as $delegate) {
181		// Set current generator
182	2	$delegate->generator = $this->generator;
		0 ignored issues – show Bug introduced 2016-01-26 20:59 UTC by Report Bug Copy Issue Report Accessing `generator` on the interface `Interop\Container\ContainerInterface` suggest that you code against a concrete implementation. How about adding an `instanceof` check? If you access a property on an interface, you most likely code against a concrete implementation of the interface. Available Fixes Adding an additional type check: interface SomeInterface { } class SomeClass implements SomeInterface { public $a; } function someFunction(SomeInterface $object) { if ($object instanceof SomeClass) { $a = $object->a; } } Changing the type hint: interface SomeInterface { } class SomeClass implements SomeInterface { public $a; } function someFunction(SomeClass $object) { $a = $object->a; } Loading history...
183	2	$delegate->generateConditions($inputVariable, $started);
184	2	}
185	2	}
186
187		/**
188		* Generate dependency injection logic function.
189		*
190		* @param string $functionName
191		*
192		* @return string PHP logic function code
193		*/
194	2	public function generateFunction($functionName = self::LOGIC_FUNCTION_NAME)
195		{
196	2	$inputVariable = '$aliasOrClassName';
197	2	$this->generator
198	2	->defFunction($functionName, array($inputVariable))
199	2	->defVar('static $services')
200	2	->newLine();
201
202		// Generate all container and delegate conditions
203	2	$this->generateConditions($inputVariable, false);
204
205		// Add method not found
206	2	return $this->generator
207	2	->endIfCondition()
208	2	->endFunction()
209	2	->flush();
210		}
211
212		/**
213		* Set container dependency.
214		*
215		* @param mixed $entity Entity
216		* @param string\|null $alias Entity alias for simplier finding
217		* @param array $parameters Collection of additional parameters
218		*
219		* @return self Chaining
220		*/
221		abstract public function set($entity, $alias = null, array $parameters = array());
222
223		/**
224		* Generate container dependency condition code.
225		* @param string $alias Entity alias
226		* @param mixed $entity Entity
227		*/
228		abstract protected function generateCondition($alias, $entity);
229		}
230

samsonframework / di

Push — master ( cf3632...f41966 )

AbstractContainer::resolve() A

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