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<?php |
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declare(strict_types = 1); |
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namespace Innmind\Compose\Definition; |
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use Innmind\Compose\{ |
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Definition\Service\Constructor, |
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Definition\Service\Argument, |
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Definition\Service\Arguments, |
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Services, |
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Exception\ServiceCannotDecorateMultipleServices, |
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Exception\LogicException |
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}; |
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use Innmind\Immutable\{ |
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StreamInterface, |
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Stream |
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}; |
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final class Service |
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{ |
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private $name; |
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private $construct; |
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private $arguments; |
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private $exposeName; |
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private $decorates = false; |
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public function __construct( |
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Name $name, |
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Constructor $constructor, |
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Argument ...$arguments |
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) { |
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$this->name = $name; |
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$this->construct = $constructor; |
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$this->arguments = Stream::of(Argument::class, ...$arguments); |
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$decorates = $this->arguments->filter(static function(Argument $argument): bool { |
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return $argument instanceof Argument\Decorate; |
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}); |
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if ($decorates->size() > 0) { |
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$this->decorates = true; |
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} |
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if ($decorates->size() > 1) { |
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throw new ServiceCannotDecorateMultipleServices((string) $name); |
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} |
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} |
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public function decorates(): bool |
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{ |
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return $this->decorates; |
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} |
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public function exposeAs(Name $name): self |
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{ |
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$self = clone $this; |
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$self->exposeName = $name; |
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return $self; |
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} |
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public function exposed(): bool |
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{ |
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return $this->exposeName instanceof Name; |
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} |
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public function exposedAs(): Name |
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{ |
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return $this->exposeName; |
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} |
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public function isExposedAs(Name $name): bool |
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{ |
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return (string) $this->exposeName === (string) $name; |
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} |
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public function name(): Name |
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{ |
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return $this->name; |
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} |
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public function constructor(): Constructor |
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{ |
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return $this->construct; |
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} |
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/** |
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* @return StreamInterface<Argument> |
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*/ |
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public function arguments(): StreamInterface |
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{ |
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return $this->arguments; |
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} |
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public function build(Services $services): object |
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{ |
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return ($this->construct)(...$this->arguments->reduce( |
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Stream::of('mixed'), |
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static function(Stream $arguments, Argument $argument) use ($services): Stream { |
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return $argument->resolve($arguments, $services); |
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} |
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)); |
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} |
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public function decorate(Name $service, Name $newName = null): self |
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{ |
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if (!$this->decorates) { |
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throw new LogicException; |
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} |
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$self = clone $this; |
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$self->name = $newName ?? new Name( |
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$self->name.'.'.md5((string) $service) |
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); |
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$self->decorates = false; |
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$self->arguments = $self->arguments->map(static function(Argument $argument) use ($service): Argument { |
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if ($argument instanceof Argument\Decorate) { |
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return new Argument\Reference($service); |
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} |
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return $argument; |
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}); |
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return $self; |
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} |
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public function tunnel( |
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Name $dependency, |
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Name $decorated, |
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Name $newName = null |
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): self { |
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if ( |
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!$this->decorates() || |
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!$this->exposed() |
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) { |
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throw new LogicException; |
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} |
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return new self( |
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$newName ?? new Name(md5($dependency.'.'.$this->exposeName)), |
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$this->construct, |
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...$this->arguments->map(function(Argument $argument) use ($dependency, $decorated): Argument { |
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if ($argument instanceof Argument\Decorate) { |
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return new Argument\Reference($decorated); |
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} |
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return new Argument\Tunnel( |
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$dependency->add($this->exposeName), |
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$argument |
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); |
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}) |
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); |
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} |
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} |
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Innmind /
Compose
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