ResourceCollectionIterator::next() - Code Metrics - Inspection of "Merge pull request #79 from webmozart/json-repo" - puli/repository - Measure and Improve Code Quality continuously with Scrutinizer

Failed Conditions

Push — 1.0 ( 9f5a0b...fe7a2f )

by Bernhard

created 2016-01-04 13:52 UTC

ResourceCollectionIterator::next() A

↳ Parent: ResourceCollectionIterator

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	1

Metric	Value
dl	0
loc	4
ccs	3
cts	3
cp	1
rs	10
cc	1
eloc	2
nc	1
nop	0
crap	1

<?php

/*
 * This file is part of the puli/repository package.
 *
 * (c) Bernhard Schussek <[email protected]>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Puli\Repository\Resource\Iterator;

use Puli\Repository\Api\Resource\PuliResource;
use Puli\Repository\Api\ResourceCollection;

/**
 * A recursive iterator for resource collections.
 *
 * Use the iterator if you want to iterate a resource collection. You can
 * configure what the iterator should return as keys and values:
 *
 * ```php
 * $iterator = new ResourceCollectionIterator(
 *     $collection,
 *     ResourceCollectionIterator::KEY_AS_PATH | ResourceCollectionIterator::CURRENT_AS_RESOURCE
 * );
 *
 * foreach ($iterator as $path => $resource) {
 *     // ...
 * }
 * ```
 *
 * If you want to iterate the collection recursively, wrap it in a
 * {@link RecursiveResourceIteratorIterator}:
 *
 * ```php
 * $iterator = new RecursiveResourceIteratorIterator(
 *     new ResourceCollectionIterator(
 *         $collection,
 *         ResourceCollectionIterator::KEY_AS_PATH | ResourceCollectionIterator::CURRENT_AS_RESOURCE
 *     ),
 *     RecursiveResourceIteratorIterator::SELF_FIRST
 * );
 *
 * foreach ($iterator as $path => $resource) {
 *     // ...
 * }
 * ```
 *
 * @since  1.0
 *
 * @author Bernhard Schussek <[email protected]>
 */
class ResourceCollectionIterator implements RecursiveResourceIterator
{
    /**
     * Return {@link PuliResource} instances as values.
     */
    const CURRENT_AS_RESOURCE = 1;

    /**
     * Return the paths of the resources as values.
     */
    const CURRENT_AS_PATH = 2;

    /**
     * Return the names of the resources as values.
     */
    const CURRENT_AS_NAME = 4;

    /**
     * Return the paths of the resources as keys.
     */
    const KEY_AS_PATH = 64;

    /**
     * Return the collection keys as keys.
     *
     * Attention: Don't use this mode when iterating recursively, as PHP's
     * {@link RecursiveIteratorIterator} skips inner nodes then.
     */
    const KEY_AS_CURSOR = 128;

    /**
     * @var PuliResource[]
     */
    protected $resources;

    /**
     * @var int
     */
    protected $mode;

    /**
     * Creates a new iterator.
     *
     * The following constants can be used to configure the values returned by
     * the iterator:
     *
     *  * {@link CURRENT_AS_RESOURCE}: The {@link PuliResource} objects are
     *                                 returned as values;
     *  * {@link CURRENT_AS_PATH}: The resource paths are returned as values;
     *  * {@link CURRENT_AS_NAME}: The resource names are returned as values.
     *
     * The following constants can be used to configure the keys returned by
     * the iterator:
     *
     *  * {@link KEY_AS_CURSOR}: The collection keys are returned as keys;
     *  * {@link KEY_AS_PATH}: The resource paths are returned as keys.
     *
     * By default, the mode `KEY_AS_PATH | CURRENT_AS_RESOURCE` is used.
     *
     * @param ResourceCollection $resources The resources to iterate.
     * @param int|null           $mode      A bitwise combination of the mode
     *                                      constants.
     */
    public function __construct(ResourceCollection $resources, $mode = null)
    {
        if (!($mode & (self::CURRENT_AS_PATH | self::CURRENT_AS_RESOURCE | self::CURRENT_AS_NAME))) {
            $mode |= self::CURRENT_AS_RESOURCE;
        }

        if (!($mode & (self::KEY_AS_PATH | self::KEY_AS_CURSOR))) {
            $mode |= self::KEY_AS_PATH;
        }

        $this->resources = $resources->toArray();
        $this->mode = $mode;
    }

    /**
     * Returns the current value of the iterator.
     *
     * @return PuliResource|string The current value as configured in
     *                             {@link __construct}.
     */
    public function current()
    {
        if ($this->mode & self::CURRENT_AS_RESOURCE) {
            return current($this->resources);
        }

        if ($this->mode & self::CURRENT_AS_PATH) {
            return current($this->resources)->getPath();
        }

        return current($this->resources)->getName();
    }

    /**
     * Advances the iterator to the next position.
     */
    public function next()
    {
        next($this->resources);
    }

    /**
     * Returns the current key of the iterator.
     *
     * @return int|string|null The current key as configured in
     *                         {@link __construct} or `null` if the cursor
     *                         is behind the last element.
     */
    public function key()
    {
        if (null === ($key = key($this->resources))) {
            return null;
        }

        if ($this->mode & self::KEY_AS_PATH) {
            return $this->resources[$key]->getPath();
        }

        return $key;
    }

    /**
     * Returns whether the iterator points to a valid key.
     *
     * @return bool Whether the iterator position is valid.
     */
    public function valid()
    {
        return null !== key($this->resources);
    }

    /**
     * Rewinds the iterator to the first entry.
     */
    public function rewind()
    {
        reset($this->resources);
    }

    /**
     * Returns whether the iterator can be applied recursively over the
     * current element.
     *
     * @return bool Whether the current element can be iterated recursively.
     */
    public function hasChildren()
    {
        return current($this->resources)->hasChildren();
    }

    /**
     * Returns the iterator for the children of the current element.
     *
     * @return static Returns an instance of this class for the children of
     *                the current element.
     */
    public function getChildren()
    {
        return new static(current($this->resources)->listChildren(), $this->mode);
    }

    /**
     * {@inheritdoc}
     */
    public function getCurrentResource()
    {
        return current($this->resources);
    }
}


1			<?php
2
3			/*
4			* This file is part of the puli/repository package.
5			*
6			* (c) Bernhard Schussek <[email protected]>
7			*
8			* For the full copyright and license information, please view the LICENSE
9			* file that was distributed with this source code.
10			*/
11
12			namespace Puli\Repository\Resource\Iterator;
13
14			use Puli\Repository\Api\Resource\PuliResource;
15			use Puli\Repository\Api\ResourceCollection;
16
17			/**
18			* A recursive iterator for resource collections.
19			*
20			* Use the iterator if you want to iterate a resource collection. You can
21			* configure what the iterator should return as keys and values:
22			*
23			* ```php
24			* $iterator = new ResourceCollectionIterator(
25			* $collection,
26			* ResourceCollectionIterator::KEY_AS_PATH \| ResourceCollectionIterator::CURRENT_AS_RESOURCE
27			* );
28			*
29			* foreach ($iterator as $path => $resource) {
30			* // ...
31			* }
32			* ```
33			*
34			* If you want to iterate the collection recursively, wrap it in a
35			* {@link RecursiveResourceIteratorIterator}:
36			*
37			* ```php
38			* $iterator = new RecursiveResourceIteratorIterator(
39			* new ResourceCollectionIterator(
40			* $collection,
41			* ResourceCollectionIterator::KEY_AS_PATH \| ResourceCollectionIterator::CURRENT_AS_RESOURCE
42			* ),
43			* RecursiveResourceIteratorIterator::SELF_FIRST
44			* );
45			*
46			* foreach ($iterator as $path => $resource) {
47			* // ...
48			* }
49			* ```
50			*
51			* @since 1.0
52			*
53			* @author Bernhard Schussek <[email protected]>
54			*/
55			class ResourceCollectionIterator implements RecursiveResourceIterator
56			{
57			/**
58			* Return {@link PuliResource} instances as values.
59			*/
60			const CURRENT_AS_RESOURCE = 1;
61
62			/**
63			* Return the paths of the resources as values.
64			*/
65			const CURRENT_AS_PATH = 2;
66
67			/**
68			* Return the names of the resources as values.
69			*/
70			const CURRENT_AS_NAME = 4;
71
72			/**
73			* Return the paths of the resources as keys.
74			*/
75			const KEY_AS_PATH = 64;
76
77			/**
78			* Return the collection keys as keys.
79			*
80			* Attention: Don't use this mode when iterating recursively, as PHP's
81			* {@link RecursiveIteratorIterator} skips inner nodes then.
82			*/
83			const KEY_AS_CURSOR = 128;
84
85			/**
86			* @var PuliResource[]
87			*/
88			protected $resources;
89
90			/**
91			* @var int
92			*/
93			protected $mode;
94
95			/**
96			* Creates a new iterator.
97			*
98			* The following constants can be used to configure the values returned by
99			* the iterator:
100			*
101			* * {@link CURRENT_AS_RESOURCE}: The {@link PuliResource} objects are
102			* returned as values;
103			* * {@link CURRENT_AS_PATH}: The resource paths are returned as values;
104			* * {@link CURRENT_AS_NAME}: The resource names are returned as values.
105			*
106			* The following constants can be used to configure the keys returned by
107			* the iterator:
108			*
109			* * {@link KEY_AS_CURSOR}: The collection keys are returned as keys;
110			* * {@link KEY_AS_PATH}: The resource paths are returned as keys.
111			*
112			* By default, the mode `KEY_AS_PATH \| CURRENT_AS_RESOURCE` is used.
113			*
114			* @param ResourceCollection $resources The resources to iterate.
115			* @param int\|null $mode A bitwise combination of the mode
116			* constants.
117			*/
118	643		public function __construct(ResourceCollection $resources, $mode = null)
119			{
120	643	View Code Duplication	if (!($mode & (self::CURRENT_AS_PATH \| self::CURRENT_AS_RESOURCE \| self::CURRENT_AS_NAME))) {
121	632		$mode \|= self::CURRENT_AS_RESOURCE;
122			}
123
124	643		if (!($mode & (self::KEY_AS_PATH \| self::KEY_AS_CURSOR))) {
125	7		$mode \|= self::KEY_AS_PATH;
126			}
127
128	643		$this->resources = $resources->toArray();
129	643		$this->mode = $mode;
130	643		}
131
132			/**
133			* Returns the current value of the iterator.
134			*
135			* @return PuliResource\|string The current value as configured in
136			* {@link __construct}.
137			*/
138	360		public function current()
139			{
140	360		if ($this->mode & self::CURRENT_AS_RESOURCE) {
141	350		return current($this->resources);
142			}
143
144	10		if ($this->mode & self::CURRENT_AS_PATH) {
145	2		return current($this->resources)->getPath();
146			}
147
148	8		return current($this->resources)->getName();
149			}
150
151			/**
152			* Advances the iterator to the next position.
153			*/
154	360		public function next()
155			{
156	360		next($this->resources);
157	360		}
158
159			/**
160			* Returns the current key of the iterator.
161			*
162			* @return int\|string\|null The current key as configured in
163			* {@link __construct} or `null` if the cursor
164			* is behind the last element.
165			*/
166	118		public function key()
167			{
168	118		if (null === ($key = key($this->resources))) {
169			return null;
170			}
171
172	118		if ($this->mode & self::KEY_AS_PATH) {
173	10		return $this->resources[$key]->getPath();
174			}
175
176	108		return $key;
177			}
178
179			/**
180			* Returns whether the iterator points to a valid key.
181			*
182			* @return bool Whether the iterator position is valid.
183			*/
184	642		public function valid()
185			{
186	642		return null !== key($this->resources);
187			}
188
189			/**
190			* Rewinds the iterator to the first entry.
191			*/
192	641		public function rewind()
193			{
194	641		reset($this->resources);
195	641		}
196
197			/**
198			* Returns whether the iterator can be applied recursively over the
199			* current element.
200			*
201			* @return bool Whether the current element can be iterated recursively.
202			*/
203	9		public function hasChildren()
204			{
205	9		return current($this->resources)->hasChildren();
206			}
207
208			/**
209			* Returns the iterator for the children of the current element.
210			*
211			* @return static Returns an instance of this class for the children of
212			* the current element.
213			*/
214	9		public function getChildren()
215			{
216	9		return new static(current($this->resources)->listChildren(), $this->mode);
217			}
218
219			/**
220			* {@inheritdoc}
221			*/
222	5		public function getCurrentResource()
223			{
224	5		return current($this->resources);
225			}
226			}
227

puli / repository

Push — 1.0 ( 9f5a0b...fe7a2f )

ResourceCollectionIterator::next() A

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