Completed
Push — v2 ( 9de304...bf6a94 )
by Joschi
05:08
created

PropertyList::getProfiledPropertyCursor()   A

Complexity

Conditions 2
Paths 2

Size

Total Lines 11
Code Lines 5

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 5
CRAP Score 2.0185

Importance

Changes 0
Metric Value
cc 2
eloc 5
c 0
b 0
f 0
nc 2
nop 1
dl 0
loc 11
ccs 5
cts 6
cp 0.8333
crap 2.0185
rs 9.4285
1
<?php
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/**
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 * micrometa
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 *
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 * @category Jkphl
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 * @package Jkphl\Micrometa
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 * @subpackage Jkphl\Micrometa\Domain\Item
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 * @author Joschi Kuphal <[email protected]> / @jkphl
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 * @copyright Copyright © 2017 Joschi Kuphal <[email protected]> / @jkphl
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 * @license http://opensource.org/licenses/MIT The MIT License (MIT)
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 */
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/***********************************************************************************
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 *  The MIT License (MIT)
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 *
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 *  Copyright © 2017 Joschi Kuphal <[email protected]> / @jkphl
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 *
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 *  Permission is hereby granted, free of charge, to any person obtaining a copy of
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 *  this software and associated documentation files (the "Software"), to deal in
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 *  the Software without restriction, including without limitation the rights to
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 *  use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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 *  the Software, and to permit persons to whom the Software is furnished to do so,
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 *  subject to the following conditions:
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 *
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 *  The above copyright notice and this permission notice shall be included in all
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 *  copies or substantial portions of the Software.
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 *
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 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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 *  FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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 *  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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 *  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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 *  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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 ***********************************************************************************/
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namespace Jkphl\Micrometa\Domain\Item;
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use Jkphl\Micrometa\Domain\Exceptions\ErrorException;
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use Jkphl\Micrometa\Domain\Exceptions\OutOfBoundsException;
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use Jkphl\Micrometa\Domain\Factory\IriFactory;
42
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/**
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 * Property list
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 *
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 * @package Jkphl\Micrometa
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 * @subpackage Jkphl\RdfaLiteMicrodata\Domain
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 */
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class PropertyList implements PropertyListInterface
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{
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    /**
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     * Property values
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     *
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     * @var array[]
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     */
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    protected $values = [];
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    /**
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     * Property names
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     *
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     * @var \stdClass[]
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     */
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    protected $names = [];
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    /**
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     * Name cursor mapping
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     *
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     * @var int[]
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     */
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    protected $nameToCursor = [];
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    /**
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     * Internal cursor
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     *
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     * @var int
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     */
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    protected $cursor = 0;
75
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    /**
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     * Unset a property
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     *
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     * @param \stdClass|string $iri IRI
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     * @throws ErrorException
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     */
82 27
    public function offsetUnset($iri)
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    {
84 1
        throw new ErrorException(
85 1
            sprintf(ErrorException::CANNOT_UNSET_PROPERTY_STR, $iri),
86 1
            ErrorException::CANNOT_UNSET_PROPERTY,
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            E_WARNING
88 27
        );
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    }
90
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    /**
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     * Return the number of properties
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     *
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     * @return int Number of properties
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     */
96 2
    public function count()
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    {
98 2
        return count($this->values);
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    }
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    /**
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     * Return the current property values
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     *
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     * @return array Property values
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     */
106 8
    public function current()
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    {
108 8
        return $this->values[$this->cursor];
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    }
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    /**
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     * Move forward to next element
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     */
114 8
    public function next()
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    {
116 8
        ++$this->cursor;
117 8
    }
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    /**
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     * Return the current IRI key
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     *
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     * @return \stdClass IRI key
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     */
124 8
    public function key()
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    {
126 8
        return $this->names[$this->cursor];
1 ignored issue
show
Bug Best Practice introduced by
The return type of return $this->names[$this->cursor]; (stdClass) is incompatible with the return type declared by the interface Iterator::key of type integer|double|string|boolean.

If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.

Let’s take a look at an example:

class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}

Our function my_function expects a Post object, and outputs the author of the post. The base class Post returns a simple string and outputting a simple string will work just fine. However, the child class BlogPost which is a sub-type of Post instead decided to return an object, and is therefore violating the SOLID principles. If a BlogPost were passed to my_function, PHP would not complain, but ultimately fail when executing the strtoupper call in its body.

Loading history...
127
    }
128
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    /**
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     * Checks if current position is valid
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     *
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     * @return boolean The current position is valid
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     */
134 17
    public function valid()
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    {
136 17
        return isset($this->values[$this->cursor]);
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    }
138
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    /**
140
     * Rewind the Iterator to the first element
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     */
142 17
    public function rewind()
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    {
144 17
        $this->cursor = 0;
145 17
    }
146
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    /**
148
     * Add a property
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     *
150
     * @param \stdClass|Iri $property Property
151
     */
152 35
    public function add($property)
153
    {
154 35
        $iri = IriFactory::create($property);
0 ignored issues
show
Bug introduced by
It seems like $property defined by parameter $property on line 152 can also be of type object<Jkphl\Micrometa\Domain\Item\Iri>; however, Jkphl\Micrometa\Domain\F...ry\IriFactory::create() does only seem to accept string|object<stdClass>, maybe add an additional type check?

This check looks at variables that have been passed in as parameters and are passed out again to other methods.

If the outgoing method call has stricter type requirements than the method itself, an issue is raised.

An additional type check may prevent trouble.

Loading history...
155 35
        $values = (is_object($property) && isset($property->values)) ? (array)$property->values : [];
156
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        // Create the property values list if necessary
158 35
        if (!$this->offsetExists($iri)) {
159 35
            $this->offsetSet($iri, $values);
160 35
            return;
161
        }
162
163 2
        $propertyValues =& $this->offsetGet($iri);
164 2
        $propertyValues = array_merge($propertyValues, $values);
165 2
    }
166
167
    /**
168
     * Return whether a property exists
169
     *
170
     * @param \stdClass|Iri|string $iri IRI
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     * @return boolean Property exists
172
     */
173 35
    public function offsetExists($iri)
174
    {
175 35
        $iri = IriFactory::create($iri);
0 ignored issues
show
Bug introduced by
It seems like $iri defined by \Jkphl\Micrometa\Domain\...riFactory::create($iri) on line 175 can also be of type object<Jkphl\Micrometa\Domain\Item\Iri>; however, Jkphl\Micrometa\Domain\F...ry\IriFactory::create() does only seem to accept string|object<stdClass>, maybe add an additional type check?

If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:

/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}

If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.

Loading history...
176
        try {
177 35
            ($iri->profile !== '') ?
178 35
                $this->getProfiledPropertyCursor($iri) : $this->getPropertyCursor($iri->name);
179 3
            return true;
180 35
        } catch (OutOfBoundsException $e) {
181 35
            return false;
182
        }
183
    }
184
185
    /**
186
     * Get a particular property cursor by its profiled name
187
     *
188
     * @param Iri $iri IRI
189
     * @return int Property cursor
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     * @throws OutOfBoundsException If the property name is unknown
191
     */
192 29
    protected function getProfiledPropertyCursor($iri)
193
    {
194 29
        $iriStr = strval($iri);
195
196
        // If the property name is unknown
197 29
        if (!isset($this->nameToCursor[$iriStr])) {
198 29
            $this->handleUnknownName($iriStr);
199
        }
200
201 6
        return $this->nameToCursor[$iriStr];
202
    }
203
204
    /**
205
     * Handle an unknown property name
206
     *
207
     * @param string $name Property name
208
     * @throws OutOfBoundsException If the property name is unknown
209
     */
210 38
    protected function handleUnknownName($name)
211
    {
212 38
        throw new OutOfBoundsException(
213 38
            sprintf(OutOfBoundsException::UNKNOWN_PROPERTY_NAME_STR, $name),
214
            OutOfBoundsException::UNKNOWN_PROPERTY_NAME
215 38
        );
216
    }
217
218
    /**
219
     * Get a particular property cursor by its name
220
     *
221
     * @param string $name Property name
222
     * @return int Property cursor
223
     */
224 10
    protected function getPropertyCursor($name)
225
    {
226
        // Run through all property names
227 10
        foreach ($this->names as $cursor => $iri) {
228 5
            if ($name === $iri->name) {
229 4
                return $cursor;
230
            }
231 8
        }
232
233 8
        return $this->handleUnknownName($name);
234
    }
235
236
    /**
237
     * Set a particular property
238
     *
239
     * @param \stdClass|Iri|string $iri IRI
240
     * @param array $value Property values
241
     */
242 9
    public function offsetSet($iri, $value)
243
    {
244 9
        $iri = IriFactory::create($iri);
0 ignored issues
show
Bug introduced by
It seems like $iri defined by \Jkphl\Micrometa\Domain\...riFactory::create($iri) on line 244 can also be of type object<Jkphl\Micrometa\Domain\Item\Iri>; however, Jkphl\Micrometa\Domain\F...ry\IriFactory::create() does only seem to accept string|object<stdClass>, maybe add an additional type check?

If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:

/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}

If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.

Loading history...
245 9
        $iriStr = strval($iri);
246 9
        $cursor = array_key_exists($iriStr, $this->nameToCursor) ?
247 9
            $this->nameToCursor[$iriStr] : ($this->nameToCursor[$iriStr] = count($this->nameToCursor));
248 9
        $this->names[$cursor] = $iri;
249 9
        $this->values[$cursor] = $value;
250 9
    }
251
252
    /**
253
     * Get a particular property
254
     *
255
     * @param \stdClass|Iri|string $iri IRI
256
     * @return array Property values
257
     * @throws OutOfBoundsException If the property name is unknown
258
     */
259 15
    public function &offsetGet($iri)
260
    {
261 15
        $iri = IriFactory::create($iri);
0 ignored issues
show
Bug introduced by
It seems like $iri defined by \Jkphl\Micrometa\Domain\...riFactory::create($iri) on line 261 can also be of type object<Jkphl\Micrometa\Domain\Item\Iri>; however, Jkphl\Micrometa\Domain\F...ry\IriFactory::create() does only seem to accept string|object<stdClass>, maybe add an additional type check?

If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:

/**
 * @return array|string
 */
function returnsDifferentValues($x) {
    if ($x) {
        return 'foo';
    }

    return array();
}

$x = returnsDifferentValues($y);
if (is_array($x)) {
    // $x is an array.
}

If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.

Loading history...
262 15
        $cursor = ($iri->profile !== '') ?
263 15
            $this->getProfiledPropertyCursor($iri) : $this->getPropertyCursor($iri->name);
264 12
        return $this->values[$cursor];
265
    }
266
}
267