Primitive::partition() - Code Metrics - Inspection of "remove dead code" - Innmind/Immutable - Measure and Improve Code Quality continuously with Scrutinizer

Completed

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by Baptiste

created 2019-12-01 17:55 UTC

Primitive::partition() A

↳ Parent: Primitive

Complexity

Conditions	3
Paths	3

Size

Total Lines	19
Code Lines	12

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	12
CRAP Score	3

Importance

Changes

Metric	Value
cc	3
eloc	12
c	0
b	0
f	0
nc	3
nop	1
dl	0
loc	19
ccs	12
cts	12
cp	1
crap	3
rs	9.8666

<?php
declare(strict_types = 1);

namespace Innmind\Immutable\Sequence;

use Innmind\Immutable\{
    Map,
    Sequence,
    Str,
    Type,
    ValidateArgument,
    Exception\OutOfBoundException,
    Exception\LogicException,
    Exception\ElementNotFound,
    Exception\CannotGroupEmptyStructure,
};

final class Primitive implements Implementation
{
    private string $type;
    private ValidateArgument $validate;
    private array $values;
    private ?int $size;

    public function __construct(string $type, ...$values)
    {
        $this->type = $type;
        $this->validate = Type::of($type);
        $this->values = $values;
    }

    public function type(): string
    {
        return $this->type;
    }

    public function size(): int
    {
        return $this->size ?? $this->size = \count($this->values);
    }

    public function count(): int
    {
        return $this->size();
    }

    public function toArray(): array
    {
        return $this->values;
    }

    public function get(int $index)
    {
        if (!$this->has($index)) {
            throw new OutOfBoundException;
        }

        return $this->values[$index];
    }

    public function diff(Implementation $sequence): self
    {
        return $this->filter(static function($value) use ($sequence): bool {
            return !$sequence->contains($value);
        });
    }

    public function distinct(): self
    {
        return $this->reduce(
            $this->clear(),
            static function(self $values, $value): self {
                if ($values->contains($value)) {
                    return $values;
                }

                return $values->add($value);
            }
        );
    }

    public function drop(int $size): self
    {
        $self = $this->clear();
        $self->values = \array_slice($this->values, $size);

        return $self;
    }

    public function dropEnd(int $size): self
    {
        $self = $this->clear();
        $self->values = \array_slice($this->values, 0, $this->size() - $size);

        return $self;
    }

    public function equals(Implementation $sequence): bool
    {
        return $this->values === $sequence->toArray();
    }

    public function filter(callable $predicate): self
    {
        $self = $this->clear();
        $self->values = \array_values(\array_filter(
            $this->values,
            $predicate
        ));

        return $self;
    }

    public function foreach(callable $function): void
    {
        foreach ($this->values as $value) {
            $function($value);
        }
    }

    public function groupBy(callable $discriminator): Map
    {
        if ($this->size() === 0) {
            throw new CannotGroupEmptyStructure;
        }

        $map = null;

        foreach ($this->values as $value) {
            $key = $discriminator($value);

            if ($map === null) {
                $map = Map::of(
                    Type::determine($key),
                    Sequence::class
                );
            }

            if ($map->contains($key)) {
                $map = $map->put(
                    $key,
                    $map->get($key)->add($value)
                );
            } else {
                $map = $map->put($key, Sequence::of($this->type, $value));
            }
        }

        return $map;

    }

    public function first()
    {
        if ($this->size() === 0) {
            throw new OutOfBoundException;
        }

        return $this->values[0];
    }

    public function last()
    {
        if ($this->size() === 0) {
            throw new OutOfBoundException;
        }

        return $this->values[$this->size() - 1];
    }

    public function contains($element): bool
    {
        return \in_array($element, $this->values, true);
    }

    public function indexOf($element): int
    {
        $index = \array_search($element, $this->values, true);

        if ($index === false) {
            throw new ElementNotFound($element);
        }

        return $index;

    }

    public function indices(): self
    {
        if ($this->size() === 0) {
            return new self('int');
        }

        return new self('int', ...\range(0, $this->size() - 1));
    }

    public function map(callable $function): self
    {
        $function = function($value) use ($function) {
            $value = $function($value);
            ($this->validate)($value, 1);

            return $value;
        };

        $self = clone $this;
        $self->values = \array_map($function, $this->values);

        return $self;
    }

    public function pad(int $size, $element): self
    {
        $self = $this->clear();
        $self->values = \array_pad($this->values, $size, $element);

        return $self;
    }

    public function partition(callable $predicate): Map
    {
        $truthy = [];
        $falsy = [];

        foreach ($this->values as $value) {
            if ($predicate($value) === true) {
                $truthy[] = $value;
            } else {
                $falsy[] = $value;
            }
        }

        $true = Sequence::of($this->type, ...$truthy);
        $false = Sequence::of($this->type, ...$falsy);

        return Map::of('bool', Sequence::class)
            (true, $true)
            (false, $false);
    }

    public function slice(int $from, int $until): self
    {
        $self = $this->clear();
        $self->values = \array_slice(
            $this->values,
            $from,
            $until - $from,
        );

        return $self;
    }

    public function splitAt(int $index): Sequence
    {
        return Sequence::of(Sequence::class)
            ->add(Sequence::of($this->type, ...$this->slice(0, $index)->toArray()))
            ->add(Sequence::of($this->type, ...$this->slice($index, $this->size())->toArray()));
    }

    public function take(int $size): self
    {
        return $this->slice(0, $size);
    }

    public function takeEnd(int $size): self
    {
        return $this->slice($this->size() - $size, $this->size());
    }

    public function append(Implementation $sequence): self
    {
        $self = $this->clear();
        $self->values = \array_merge($this->values, $sequence->toArray());

        return $self;
    }

    public function intersect(Implementation $sequence): self
    {
        return $this->filter(static function($value) use ($sequence): bool {
            return $sequence->contains($value);
        });
    }

    public function join(string $separator): Str
    {
        return Str::of(\implode($separator, $this->values));
    }

    public function add($element): self
    {
        $self = clone $this;
        $self->values[] = $element;
        $self->size = $this->size() + 1;

        return $self;
    }

    public function sort(callable $function): self
    {
        $self = clone $this;
        \usort($self->values, $function);

        return $self;
    }

    public function reduce($carry, callable $reducer)
    {
        return \array_reduce($this->values, $reducer, $carry);
    }

    public function clear(): Implementation
    {
        return new self($this->type);
    }

    public function reverse(): self
    {
        $self = clone $this;
        $self->values = \array_reverse($this->values);

        return $self;
    }

    public function empty(): bool
    {
        return !$this->has(0);
    }

    private function has(int $index): bool
    {
        return \array_key_exists($index, $this->values);
    }
}


1		<?php
2		declare(strict_types = 1);
3
4		namespace Innmind\Immutable\Sequence;
5
6		use Innmind\Immutable\{
7		Map,
8		Sequence,
9		Str,
10		Type,
11		ValidateArgument,
12		Exception\OutOfBoundException,
13		Exception\LogicException,
14		Exception\ElementNotFound,
15		Exception\CannotGroupEmptyStructure,
16		};
17
18		final class Primitive implements Implementation
19		{
20		private string $type;
21		private ValidateArgument $validate;
22		private array $values;
23		private ?int $size;
24
25	214	public function __construct(string $type, ...$values)
26		{
27	214	$this->type = $type;
28	214	$this->validate = Type::of($type);
29	214	$this->values = $values;
30	214	}
31
32	3	public function type(): string
33		{
34	3	return $this->type;
35		}
36
37	153	public function size(): int
38		{
39	153	return $this->size ?? $this->size = \count($this->values);
40		}
41
42	1	public function count(): int
43		{
44	1	return $this->size();
45		}
46
47	124	public function toArray(): array
48		{
49	124	return $this->values;
50		}
51
52	28	public function get(int $index)
53		{
54	28	if (!$this->has($index)) {
55	2	throw new OutOfBoundException;
56		}
57
58	26	return $this->values[$index];
59		}
60
61	4	public function diff(Implementation $sequence): self
62		{
63		return $this->filter(static function($value) use ($sequence): bool {
64	4	return !$sequence->contains($value);
65	4	});
66		}
67
68	82	public function distinct(): self
69		{
70	82	return $this->reduce(
71	82	$this->clear(),
72		static function(self $values, $value): self {
73	53	if ($values->contains($value)) {
74	8	return $values;
75		}
76
77	53	return $values->add($value);
78	82	}
79		);
80		}
81
82	6	public function drop(int $size): self
83		{
84	6	$self = $this->clear();
85	6	$self->values = \array_slice($this->values, $size);
86
87	6	return $self;
88		}
89
90	2	public function dropEnd(int $size): self
91		{
92	2	$self = $this->clear();
93	2	$self->values = \array_slice($this->values, 0, $this->size() - $size);
94
95	2	return $self;
96		}
97
98	7	public function equals(Implementation $sequence): bool
99		{
100	7	return $this->values === $sequence->toArray();
101		}
102
103	23	public function filter(callable $predicate): self
104		{
105	23	$self = $this->clear();
106	23	$self->values = \array_values(\array_filter(
107	23	$this->values,
108	23	$predicate
109		));
110
111	23	return $self;
112		}
113
114	4	public function foreach(callable $function): void
115		{
116	4	foreach ($this->values as $value) {
117	4	$function($value);
118		}
119	4	}
120
121	6	public function groupBy(callable $discriminator): Map
122		{
123	6	if ($this->size() === 0) {
124	2	throw new CannotGroupEmptyStructure;
125		}
126
127	4	$map = null;
128
129	4	foreach ($this->values as $value) {
130	4	$key = $discriminator($value);
131
132	4	if ($map === null) {
133	4	$map = Map::of(
134	4	Type::determine($key),
135	4	Sequence::class
136		);
137		}
138
139	4	if ($map->contains($key)) {
140	4	$map = $map->put(
141	4	$key,
142	4	$map->get($key)->add($value)
143		);
144		} else {
145	4	$map = $map->put($key, Sequence::of($this->type, $value));
146		}
147		}
148
149	4	return $map;
		0 ignored issues – show Bug Best Practice introduced 2019-12-01 18:01 UTC by Report Bug Copy Issue Report The expression `return $map` could return the type `null` which is incompatible with the type-hinted return `Innmind\Immutable\Map`. Consider adding an additional type-check to rule them out. Loading history...
150		}
151
152	5	public function first()
153		{
154	5	if ($this->size() === 0) {
155	1	throw new OutOfBoundException;
156		}
157
158	4	return $this->values[0];
159		}
160
161	5	public function last()
162		{
163	5	if ($this->size() === 0) {
164	1	throw new OutOfBoundException;
165		}
166
167	4	return $this->values[$this->size() - 1];
168		}
169
170	97	public function contains($element): bool
171		{
172	97	return \in_array($element, $this->values, true);
173		}
174
175	23	public function indexOf($element): int
176		{
177	23	$index = \array_search($element, $this->values, true);
178
179	23	if ($index === false) {
180	1	throw new ElementNotFound($element);
181		}
182
183	22	return $index;
		0 ignored issues – show Bug Best Practice introduced 2019-12-01 18:01 UTC by Report Bug Copy Issue Report The expression `return $index` could return the type `string` which is incompatible with the type-hinted return `integer`. Consider adding an additional type-check to rule them out. Loading history...
184		}
185
186	4	public function indices(): self
187		{
188	4	if ($this->size() === 0) {
189	2	return new self('int');
190		}
191
192	2	return new self('int', ...\range(0, $this->size() - 1));
193		}
194
195	5	public function map(callable $function): self
196		{
197		$function = function($value) use ($function) {
198	5	$value = $function($value);
199	5	($this->validate)($value, 1);
200
201	3	return $value;
202	5	};
203
204	5	$self = clone $this;
205	5	$self->values = \array_map($function, $this->values);
206
207	3	return $self;
208		}
209
210	2	public function pad(int $size, $element): self
211		{
212	2	$self = $this->clear();
213	2	$self->values = \array_pad($this->values, $size, $element);
214
215	2	return $self;
216		}
217
218	4	public function partition(callable $predicate): Map
219		{
220	4	$truthy = [];
221	4	$falsy = [];
222
223	4	foreach ($this->values as $value) {
224	4	if ($predicate($value) === true) {
225	4	$truthy[] = $value;
226		} else {
227	4	$falsy[] = $value;
228		}
229		}
230
231	4	$true = Sequence::of($this->type, ...$truthy);
232	4	$false = Sequence::of($this->type, ...$falsy);
233
234	4	return Map::of('bool', Sequence::class)
235	4	(true, $true)
236	4	(false, $false);
237		}
238
239	15	public function slice(int $from, int $until): self
240		{
241	15	$self = $this->clear();
242	15	$self->values = \array_slice(
243	15	$this->values,
244	15	$from,
245	15	$until - $from,
246		);
247
248	15	return $self;
249		}
250
251	2	public function splitAt(int $index): Sequence
252		{
253	2	return Sequence::of(Sequence::class)
254	2	->add(Sequence::of($this->type, ...$this->slice(0, $index)->toArray()))
255	2	->add(Sequence::of($this->type, ...$this->slice($index, $this->size())->toArray()));
256		}
257
258	6	public function take(int $size): self
259		{
260	6	return $this->slice(0, $size);
261		}
262
263	2	public function takeEnd(int $size): self
264		{
265	2	return $this->slice($this->size() - $size, $this->size());
266		}
267
268	9	public function append(Implementation $sequence): self
269		{
270	9	$self = $this->clear();
271	9	$self->values = \array_merge($this->values, $sequence->toArray());
272
273	9	return $self;
274		}
275
276	15	public function intersect(Implementation $sequence): self
277		{
278		return $this->filter(static function($value) use ($sequence): bool {
279	15	return $sequence->contains($value);
280	15	});
281		}
282
283	12	public function join(string $separator): Str
284		{
285	12	return Str::of(\implode($separator, $this->values));
286		}
287
288	140	public function add($element): self
289		{
290	140	$self = clone $this;
291	140	$self->values[] = $element;
292	140	$self->size = $this->size() + 1;
293
294	140	return $self;
295		}
296
297	4	public function sort(callable $function): self
298		{
299	4	$self = clone $this;
300	4	\usort($self->values, $function);
301
302	4	return $self;
303		}
304
305	173	public function reduce($carry, callable $reducer)
306		{
307	173	return \array_reduce($this->values, $reducer, $carry);
308		}
309
310	106	public function clear(): Implementation
311		{
312	106	return new self($this->type);
313		}
314
315	3	public function reverse(): self
316		{
317	3	$self = clone $this;
318	3	$self->values = \array_reverse($this->values);
319
320	3	return $self;
321		}
322
323	5	public function empty(): bool
324		{
325	5	return !$this->has(0);
326		}
327
328	33	private function has(int $index): bool
329		{
330	33	return \array_key_exists($index, $this->values);
331		}
332		}
333

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Primitive::partition() A

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