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<?php |
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declare(strict_types = 1); |
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namespace Fixtures\Innmind\Immutable; |
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use Innmind\BlackBox\Set; |
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use Innmind\Immutable\Sequence as Structure; |
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/** |
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* {@inheritdoc} |
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* @template I |
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*/ |
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final class Sequence implements Set |
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{ |
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private $type; |
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private $set; |
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private $sizes; |
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public function __construct(string $type, Set $set, Set\Integers $sizes = null) |
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{ |
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$this->type = $type; |
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$this->set = $set; |
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$this->sizes = ($sizes ?? Set\Integers::between(0, 100))->take(100); |
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} |
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/** |
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* @return Set<Structure<I>> |
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*/ |
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public static function of(string $type, Set $set, Set\Integers $sizes = null): self |
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{ |
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return new self($type, $set, $sizes); |
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} |
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public function take(int $size): Set |
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{ |
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$self = clone $this; |
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$self->sizes = $this->sizes->take($size); |
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return $self; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function filter(callable $predicate): Set |
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{ |
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throw new \LogicException('Sequence set can\'t be filtered, underlying set must be filtered beforehand'); |
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} |
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/** |
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* @return \Generator<Set\Value<Structure<I>>> |
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*/ |
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public function values(): \Generator |
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{ |
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$immutable = $this->set->values()->current()->isImmutable(); |
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foreach ($this->sizes->values() as $size) { |
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if ($immutable) { |
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yield Set\Value::immutable($this->generate($size->unwrap())); |
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} else { |
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yield Set\Value::mutable(fn() => $this->generate($size->unwrap())); |
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} |
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} |
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} |
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private function generate(int $size): Structure |
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{ |
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$sequence = Structure::of($this->type); |
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$values = $this->set->take($size)->values(); |
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while ($sequence->size() < $size) { |
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$sequence = ($sequence)($values->current()->unwrap()); |
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$values->next(); |
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} |
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return $sequence; |
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} |
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} |
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Innmind /
Immutable
Loading history...
Let?s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let?s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: