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<?php |
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declare(strict_types = 1); |
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namespace Innmind\Compose; |
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use Innmind\Compose\{ |
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Definition\Name, |
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Definition\Service, |
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Definition\Service\Argument, |
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Exception\ArgumentNotProvided, |
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Exception\ArgumentNotDefined, |
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Exception\AtLeastOneServiceMustBeExposed |
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}; |
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use Innmind\Immutable\{ |
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Sequence, |
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MapInterface, |
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Map, |
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Pair |
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}; |
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final class Definitions |
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{ |
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private $definitions; |
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private $exposed; |
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private $arguments; |
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public function __construct(Arguments $arguments, Service ...$definitions) |
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{ |
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$this->arguments = $arguments; |
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$this->definitions = Sequence::of(...$definitions)->reduce( |
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new Map('string', Service::class), |
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static function(Map $definitions, Service $definition): Map { |
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return $definitions->put( |
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(string) $definition->name(), |
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$definition |
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); |
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} |
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); |
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$this->exposed = $this |
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->definitions |
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->filter(static function(string $name, Service $definition): bool { |
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return $definition->exposed(); |
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}) |
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->map(static function(string $name, Service $definition): Pair { |
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return new Pair( |
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(string) $definition->exposedAs(), |
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$definition |
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); |
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}); |
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if ($this->exposed->size() === 0) { |
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throw new AtLeastOneServiceMustBeExposed; |
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} |
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} |
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/** |
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* @param MapInterface<string, mixed> $arguments |
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*/ |
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public function inject(MapInterface $arguments): self |
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{ |
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$self = clone $this; |
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$self->arguments = $self->arguments->bind($arguments); |
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return $self; |
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} |
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public function build(Name $name): object |
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{ |
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$definition = $this->get($name); |
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$arguments = $this->buildArguments($definition); |
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$construct = $definition->constructor(); |
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return $construct(...$arguments); |
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} |
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public function arguments(): Arguments |
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{ |
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return $this->arguments; |
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} |
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public function has(Name $name): bool |
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{ |
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if ($this->definitions->contains((string) $name)) { |
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return true; |
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} |
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return $this->exposed->contains((string) $name); |
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} |
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public function get(Name $name): Service |
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{ |
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try { |
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return $this->definitions->get((string) $name); |
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} catch (\Exception $e) { |
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return $this->exposed->get((string) $name); |
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} |
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} |
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public function buildArguments(Service $service): Sequence |
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{ |
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return $service |
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->arguments() |
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->reduce( |
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new Sequence, |
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function(Sequence $arguments, Argument $argument): Sequence { |
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// @todo: handle the decoration |
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$value = $this->fetchArgumentValue($argument); |
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if ($argument->toUnwind()) { |
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return $arguments->append(new Sequence(...$value ?? [])); |
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} |
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return $arguments->add($value); |
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} |
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); |
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} |
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3 |
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public function fetchArgumentValue(Argument $argument) |
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{ |
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try { |
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return $this->arguments->get($argument->reference()); |
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} catch (ArgumentNotProvided $e) { |
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if ($e->argument()->hasDefault()) { |
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return $this->build($e->argument()->default()); |
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} |
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} catch (ArgumentNotDefined $e) { |
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return $this->build($argument->reference()); |
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} |
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//null as the argument must be optional here, requirement as been |
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//checked earlier |
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1 |
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return null; |
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} |
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} |
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Innmind /
Compose
