2016-05-27 01:20:05 +02:00
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<?php
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namespace Amp\Internal;
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use Amp\Observable;
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/**
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* An observable that cannot externally emit values. Used by Postponed in development mode.
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2016-06-01 18:37:12 +02:00
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*
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* @internal
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2016-05-27 01:20:05 +02:00
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*/
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final class PrivateObservable implements Observable {
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2016-05-27 22:44:01 +02:00
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use Producer;
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2016-05-27 01:20:05 +02:00
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/**
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* @param callable(callable $emit, callable $complete, callable $fail): void $emitter
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*/
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public function __construct(callable $emitter) {
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2016-06-01 06:02:59 +02:00
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$this->init();
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2016-05-27 01:20:05 +02:00
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/**
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* Emits a value from the observable.
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*
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* @param mixed $value
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*
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* @return \Interop\Async\Awaitable
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*/
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$emit = function ($value = null) {
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return $this->emit($value);
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};
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/**
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* Completes the observable with the given value.
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*
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* @param mixed $value
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*/
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2016-05-29 18:35:09 +02:00
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$resolve = function ($value = null) {
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$this->resolve($value);
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2016-05-27 01:20:05 +02:00
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};
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/**
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* Fails the observable with the given exception.
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*
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* @param \Exception $reason
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*/
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$fail = function ($reason) {
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2016-05-29 18:35:09 +02:00
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$this->fail($reason);
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2016-05-27 01:20:05 +02:00
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};
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try {
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2016-05-29 18:35:09 +02:00
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$emitter($emit, $resolve, $fail);
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2016-05-27 01:20:05 +02:00
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} catch (\Throwable $exception) {
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$this->fail($exception);
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} catch (\Exception $exception) {
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$this->fail($exception);
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}
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}
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}
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