Map::compute() - Code Metrics - Inspection of "Alpha 3" - matecat/subfiltering - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( a95f40...077740 )

by Domenico

created 2024-05-24 16:40 UTC

Map::compute() A

↳ Parent: Map

Complexity

Conditions	3
Paths	3

Size

Total Lines	12
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	3
eloc	8
c	1
b	0
f	0
nc	3
nop	2
dl	0
loc	12
rs	10

<?php
/**
 * Created by PhpStorm.
 * @author hashashiyyin [email protected] / [email protected]
 * Date: 24/05/24
 * Time: 13:41
 *
 */

namespace Matecat\SubFiltering\Utils;

use ArrayAccess;
use ArrayIterator;
use Generator;
use IteratorAggregate;

/**
 * Java like interface helper for key/value php arrays
 *
 */
class Map implements IteratorAggregate, ArrayAccess {

    /**
     * @var array
     */
    private $map;

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

    /**
     * @return ArrayIterator
     */
    public function getIterator() {
        return new ArrayIterator( $this->map );
    }

    /**
     * @param $offset
     *
     * @return bool
     */
    public function offsetExists( $offset ) {
        return array_key_exists( $offset, $this->map );
    }

    /**
     * @param $offset
     *
     * @return mixed|null
     */
    public function offsetGet( $offset ) {
        return $this->get( $offset );
    }

    /**
     * @param $offset
     * @param $value
     *
     * @return void
     */
    public function offsetSet( $offset, $value ) {
        $this->put( $offset, $value );
    }

    /**
     * @param $offset
     *
     * @return void
     */
    public function offsetUnset( $offset ) {
        $this->remove( $offset );
    }


    /**
     * @return Generator
     */
    public function entrySet() {
        foreach ( $this->map as $k => $v ) {
            yield [ $k, $v ];
        }
    }

    public static function instance( array $map = [] ) {
        return new static( $map );
    }

    /**
     * Safe key access. Avoid warnings.
     *
     * @param       $needle
     *
     * @return mixed|null
     */
    public function get( $needle ) {
        return $this->getOrDefault( $needle, null );
    }

    /**
     * @param $needle
     * @param $default
     *
     * @return mixed
     */
    public function getOrDefault( $needle, $default ) {
        return array_key_exists( $needle, $this->map ) ? $this->map [ $needle ] : $default;
    }

    /**
     * Removes all the mappings from this map.
     * @return void
     */
    public function clear() {
        $this->map = [];
    }

    /**
     * Returns a shallow copy of this HashMap instance: the keys and values themselves are not cloned.
     * @return $this
     */
    public function __clone() {
        return new static( $this->map );
    }

    public function containsKey( $key ) {
        return array_key_exists( $key, $this->map );
    }

    /**
     * Returns true if this map maps one or more keys to the specified value.
     * If the value is found more than once, the first matching key is returned.
     *
     * @param $value
     *
     * @return false|string
     */
    public function containsValue( $value ) {
        return array_search( $value, $this->map, true );
    }

    /**
     * Performs the given action for each entry in this map until all entries have been processed or the action throws an exception.
     * Actions are performed in the order of entry set iteration.
     *
     * @param callable $callable
     *
     * @return Generator
     */
    public function foreEach( callable $callable ) {
        foreach ( $this->map as $k => $v ) {
            yield $callable( $k, $v );
        }
    }

    /**
     * Returns true if this map contains no key-value mappings.
     *
     * @return bool
     */
    public function isEmpty() {
        return empty( $this->map );
    }

    /**
     * @return Map
     */
    public function keySet() {
        return static::instance( array_keys( $this->map ) );
    }

    /**
     * Associates the specified value with the specified key in this map. If the map previously contained a mapping for the key, the old value is replaced.
     *
     * @param $key
     * @param $value
     *
     * @return mixed|null the previous value associated with `key`, or null if there was no mapping for `key`.
     */
    public function put( $key, $value ) {
        $previousValue     = $this->get( $key );
        $this->map[ $key ] = $value;

        return $previousValue;
    }

    /**
     * @param $map
     *
     * @return void
     */
    public function putAll( $map ) {
        foreach ( $map as $k => $v ) {
            $this->map[ $k ] = $v;
        }
    }

    /**
     * If the specified key is not already associated with a value (or is mapped to null) associates it with the given value and returns null, else returns the current value.
     *
     * @param $key
     * @param $value
     *
     * @return mixed|null the previous value associated with the specified key, or null if there was no mapping for the key.
     *               A null return can also indicate that the map previously associated null with the `key`
     */
    public function putIfAbsent( $key, $value ) {
        $previousValue = $this->get( $key );
        if ( $previousValue === null ) {
            $this->map[ $key ] = $value;
        }

        return $previousValue;
    }

    /**
     * Removes the mapping for the specified key from this map if present.
     *
     * @param $key
     *
     * @return bool true if the value was removed
     */
    public function remove( $key ) {
        $exists = array_key_exists( $key, $this->map );
        if ( $exists ) {
            unset( $this->map[ $key ] );
        }

        return $exists;
    }

    /**
     * Replaces the entry for the specified key only if it is currently mapped to some value.
     *
     * @return mixed|null the previous value associated with the specified key, or null if there was no mapping for the key.
     *                      A null return can also indicate that the map previously associated null with the key.
     */
    public function replace( $key, $value ) {
        $exists        = array_key_exists( $key, $this->map );
        $previousValue = $this->get( $key );
        if ( $exists ) {
            $this->map[ $key ] = $value;
        }

        return $previousValue;
    }

    /**
     * Replaces the entry for the specified key only if currently mapped to the specified value.
     *
     * @param $key
     * @param $newValue
     * @param $oldValue
     *
     * @return boolean true if the value was replaced
     */
    public function replaceIfEquals( $key, $newValue, $oldValue ) {
        $exists        = array_key_exists( $key, $this->map );
        $previousValue = $this->get( $key );
        if ( $exists && $previousValue === $oldValue ) {
            $this->map[ $key ] = $newValue;

            return true;
        }

        return false;
    }

    /**
     * Replaces each entry's value with the result of invoking the given function on that entry until all entries have been processed,
     * or the function throws an exception.
     * Exceptions thrown by the function are relayed to the caller.
     *
     * @param callable $callable
     *
     * @return void
     */
    public function replaceAll( callable $callable ) {
        foreach ( $this->map as $key => $value ) {
            $this->map[ $key ] = $callable( $key, $value );
        }
    }

    /**
     * @return int
     */
    public function size() {
        return sizeof( $this->map );
    }

    /**
     * @return Map
     */
    public function values() {
        return new static( array_values( $this->map ) );
    }

    /**
     * Attempts to compute a mapping for the specified key and its current mapped value (or null if there is no current mapping).
     * For example, to either create or append a String msg to a value mapping:
     * <code>
     *     $_empty = 'EMPTY';
     *     $map->compute( "foo", function( $k, $v ) use ( $_empty ) { ($v == null) ? $_empty : 'NO MORE ' . $_empty  } );
     * </code>
     *
     * If the function returns null, the mapping is removed (or remains absent if initially absent).
     * If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.
     *
     * @param          $key
     * @param callable $callable
     *
     * @return mixed|null the new value associated with the specified key, or null if none
     */
    public function compute( $key, callable $callable ) {
        $exists = array_key_exists( $key, $this->map );
        if ( $exists ) {
            $res = $callable( $key, $this->get( $key ) );
            if ( $res == null ) {
                unset( $this->map[ $key ] );
            } else {
                $this->map[ $key ] = $callable( $key, $this->get( $key ) );
            }
        }

        return null;
    }

    /**
     * If the specified key is not already associated with a value (or is mapped to null),
     * attempts to compute its value using the given mapping function and enters it into this map unless null.
     *
     * If the function returns null, no mapping is recorded. If the function itself throws an (unchecked) exception,
     * the exception is rethrown, and no mapping is recorded.
     *
     * The most common usage is to construct a new object serving as an initial mapped value or memoized result, as in:
     *
     * @param          $key
     * @param callable $callable
     *
     * @return mixed|null the current (existing or computed) value associated with the specified key, or null if the computed value is null
     */
    public function computeIfAbsent( $key, callable $callable ) {
        $exists        = array_key_exists( $key, $this->map );
        $previousValue = $this->get( $key );
        $res           = null;
        if ( !$exists || $previousValue !== null ) {
            $res = $callable( $key, $this->get( $key ) );
            if ( $res != null ) {
                $this->map[ $key ] = $res;
            }

        }

        return $res ?: null;

    }

    /**
     * If the value for the specified key is present and non-null, attempts to compute a new mapping given the key and its current mapped value.
     *
     * If the function returns null, the mapping is removed.
     * If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.
     *
     * @param          $key
     * @param callable $callable
     *
     * @return mixed|null the new value associated with the specified key, or null if none
     */
    public function computeIfPresent( $key, callable $callable ) {
        $exists        = array_key_exists( $key, $this->map );
        $previousValue = $this->get( $key );
        $res           = null;
        if ( $exists && $previousValue !== null ) {
            $res = $callable( $key, $this->map[ $key ] );
            if ( $res == null ) {
                unset( $this->map[ $key ] );
            } else {
                $this->map[ $key ] = $res;
            }
        }

        return $res ?: null;
    }

}

1			<?php
2			/**
3			* Created by PhpStorm.
4			* @author hashashiyyin [email protected] / [email protected]
5			* Date: 24/05/24
6			* Time: 13:41
7			*
8			*/
9
10			namespace Matecat\SubFiltering\Utils;
11
12			use ArrayAccess;
13			use ArrayIterator;
14			use Generator;
15			use IteratorAggregate;
16
17			/**
18			* Java like interface helper for key/value php arrays
19			*
20			*/
21			class Map implements IteratorAggregate, ArrayAccess {
22
23			/**
24			* @var array
25			*/
26			private $map;
27
28			public function __construct( array $map ) {
29			$this->map = $map;
30			}
31
32			/**
33			* @return ArrayIterator
34			*/
35			public function getIterator() {
36			return new ArrayIterator( $this->map );
37			}
38
39			/**
40			* @param $offset
41			*
42			* @return bool
43			*/
44			public function offsetExists( $offset ) {
45			return array_key_exists( $offset, $this->map );
46			}
47
48			/**
49			* @param $offset
50			*
51			* @return mixed\|null
52			*/
53			public function offsetGet( $offset ) {
54			return $this->get( $offset );
55			}
56
57			/**
58			* @param $offset
59			* @param $value
60			*
61			* @return void
62			*/
63			public function offsetSet( $offset, $value ) {
64			$this->put( $offset, $value );
65			}
66
67			/**
68			* @param $offset
69			*
70			* @return void
71			*/
72			public function offsetUnset( $offset ) {
73			$this->remove( $offset );
74			}
75
76
77			/**
78			* @return Generator
79			*/
80			public function entrySet() {
81			foreach ( $this->map as $k => $v ) {
82			yield [ $k, $v ];
83			}
84			}
85
86			public static function instance( array $map = [] ) {
87			return new static( $map );
88			}
89
90			/**
91			* Safe key access. Avoid warnings.
92			*
93			* @param $needle
94			*
95			* @return mixed\|null
96			*/
97			public function get( $needle ) {
98			return $this->getOrDefault( $needle, null );
99			}
100
101			/**
102			* @param $needle
103			* @param $default
104			*
105			* @return mixed
106			*/
107			public function getOrDefault( $needle, $default ) {
108			return array_key_exists( $needle, $this->map ) ? $this->map [ $needle ] : $default;
109			}
110
111			/**
112			* Removes all the mappings from this map.
113			* @return void
114			*/
115			public function clear() {
116			$this->map = [];
117			}
118
119			/**
120			* Returns a shallow copy of this HashMap instance: the keys and values themselves are not cloned.
121			* @return $this
122			*/
123			public function __clone() {
124			return new static( $this->map );
125			}
126
127			public function containsKey( $key ) {
128			return array_key_exists( $key, $this->map );
129			}
130
131			/**
132			* Returns true if this map maps one or more keys to the specified value.
133			* If the value is found more than once, the first matching key is returned.
134			*
135			* @param $value
136			*
137			* @return false\|string
138			*/
139			public function containsValue( $value ) {
140			return array_search( $value, $this->map, true );
141			}
142
143			/**
144			* Performs the given action for each entry in this map until all entries have been processed or the action throws an exception.
145			* Actions are performed in the order of entry set iteration.
146			*
147			* @param callable $callable
148			*
149			* @return Generator
150			*/
151			public function foreEach( callable $callable ) {
152			foreach ( $this->map as $k => $v ) {
153			yield $callable( $k, $v );
154			}
155			}
156
157			/**
158			* Returns true if this map contains no key-value mappings.
159			*
160			* @return bool
161			*/
162			public function isEmpty() {
163			return empty( $this->map );
164			}
165
166			/**
167			* @return Map
168			*/
169			public function keySet() {
170			return static::instance( array_keys( $this->map ) );
171			}
172
173			/**
174			* Associates the specified value with the specified key in this map. If the map previously contained a mapping for the key, the old value is replaced.
175			*
176			* @param $key
177			* @param $value
178			*
179			* @return mixed\|null the previous value associated with `key`, or null if there was no mapping for `key`.
180			*/
181			public function put( $key, $value ) {
182			$previousValue = $this->get( $key );
183			$this->map[ $key ] = $value;
184
185			return $previousValue;
186			}
187
188			/**
189			* @param $map
190			*
191			* @return void
192			*/
193			public function putAll( $map ) {
194			foreach ( $map as $k => $v ) {
195			$this->map[ $k ] = $v;
196			}
197			}
198
199			/**
200			* If the specified key is not already associated with a value (or is mapped to null) associates it with the given value and returns null, else returns the current value.
201			*
202			* @param $key
203			* @param $value
204			*
205			* @return mixed\|null the previous value associated with the specified key, or null if there was no mapping for the key.
206			* A null return can also indicate that the map previously associated null with the `key`
207			*/
208			public function putIfAbsent( $key, $value ) {
209			$previousValue = $this->get( $key );
210			if ( $previousValue === null ) {
211			$this->map[ $key ] = $value;
212			}
213
214			return $previousValue;
215			}
216
217			/**
218			* Removes the mapping for the specified key from this map if present.
219			*
220			* @param $key
221			*
222			* @return bool true if the value was removed
223			*/
224			public function remove( $key ) {
225			$exists = array_key_exists( $key, $this->map );
226			if ( $exists ) {
227			unset( $this->map[ $key ] );
228			}
229
230			return $exists;
231			}
232
233			/**
234			* Replaces the entry for the specified key only if it is currently mapped to some value.
235			*
236			* @return mixed\|null the previous value associated with the specified key, or null if there was no mapping for the key.
237			* A null return can also indicate that the map previously associated null with the key.
238			*/
239			public function replace( $key, $value ) {
240			$exists = array_key_exists( $key, $this->map );
241			$previousValue = $this->get( $key );
242			if ( $exists ) {
243			$this->map[ $key ] = $value;
244			}
245
246			return $previousValue;
247			}
248
249			/**
250			* Replaces the entry for the specified key only if currently mapped to the specified value.
251			*
252			* @param $key
253			* @param $newValue
254			* @param $oldValue
255			*
256			* @return boolean true if the value was replaced
257			*/
258			public function replaceIfEquals( $key, $newValue, $oldValue ) {
259			$exists = array_key_exists( $key, $this->map );
260			$previousValue = $this->get( $key );
261			if ( $exists && $previousValue === $oldValue ) {
262			$this->map[ $key ] = $newValue;
263
264			return true;
265			}
266
267			return false;
268			}
269
270			/**
271			* Replaces each entry's value with the result of invoking the given function on that entry until all entries have been processed,
272			* or the function throws an exception.
273			* Exceptions thrown by the function are relayed to the caller.
274			*
275			* @param callable $callable
276			*
277			* @return void
278			*/
279			public function replaceAll( callable $callable ) {
280			foreach ( $this->map as $key => $value ) {
281			$this->map[ $key ] = $callable( $key, $value );
282			}
283			}
284
285			/**
286			* @return int
287			*/
288			public function size() {
289			return sizeof( $this->map );
290			}
291
292			/**
293			* @return Map
294			*/
295			public function values() {
296			return new static( array_values( $this->map ) );
297			}
298
299			/**
300			* Attempts to compute a mapping for the specified key and its current mapped value (or null if there is no current mapping).
301			* For example, to either create or append a String msg to a value mapping:
302			* <code>
303			* $_empty = 'EMPTY';
304			* $map->compute( "foo", function( $k, $v ) use ( $_empty ) { ($v == null) ? $_empty : 'NO MORE ' . $_empty } );
305			* </code>
306			*
307			* If the function returns null, the mapping is removed (or remains absent if initially absent).
308			* If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.
309			*
310			* @param $key
311			* @param callable $callable
312			*
313			* @return mixed\|null the new value associated with the specified key, or null if none
314			*/
315			public function compute( $key, callable $callable ) {
316			$exists = array_key_exists( $key, $this->map );
317			if ( $exists ) {
318			$res = $callable( $key, $this->get( $key ) );
319			if ( $res == null ) {
320			unset( $this->map[ $key ] );
321			} else {
322			$this->map[ $key ] = $callable( $key, $this->get( $key ) );
323			}
324			}
325
326			return null;
327			}
328
329			/**
330			* If the specified key is not already associated with a value (or is mapped to null),
331			* attempts to compute its value using the given mapping function and enters it into this map unless null.
332			*
333			* If the function returns null, no mapping is recorded. If the function itself throws an (unchecked) exception,
334			* the exception is rethrown, and no mapping is recorded.
335			*
336			* The most common usage is to construct a new object serving as an initial mapped value or memoized result, as in:
337			*
338			* @param $key
339			* @param callable $callable
340			*
341			* @return mixed\|null the current (existing or computed) value associated with the specified key, or null if the computed value is null
342			*/
343			public function computeIfAbsent( $key, callable $callable ) {
344			$exists = array_key_exists( $key, $this->map );
345			$previousValue = $this->get( $key );
346			$res = null;
347			if ( !$exists \|\| $previousValue !== null ) {
348			$res = $callable( $key, $this->get( $key ) );
349			if ( $res != null ) {
350			$this->map[ $key ] = $res;
351			}
352
353			}
354
355			return $res ?: null;
356
357			}
358
359			/**
360			* If the value for the specified key is present and non-null, attempts to compute a new mapping given the key and its current mapped value.
361			*
362			* If the function returns null, the mapping is removed.
363			* If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.
364			*
365			* @param $key
366			* @param callable $callable
367			*
368			* @return mixed\|null the new value associated with the specified key, or null if none
369			*/
370			public function computeIfPresent( $key, callable $callable ) {
371			$exists = array_key_exists( $key, $this->map );
372			$previousValue = $this->get( $key );
373			$res = null;
374			if ( $exists && $previousValue !== null ) {
375			$res = $callable( $key, $this->map[ $key ] );
376			if ( $res == null ) {
377			unset( $this->map[ $key ] );
378			} else {
379			$this->map[ $key ] = $res;
380			}
381			}
382
383			return $res ?: null;
384			}
385
386			}

matecat / subfiltering

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Map::compute() A

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