90 lines
2.0 KiB
PHP
90 lines
2.0 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace GuzzleHttp\Promise;
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/**
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* A promise that has been fulfilled.
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*
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* Thenning off of this promise will invoke the onFulfilled callback
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* immediately and ignore other callbacks.
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*
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* @final
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*/
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class FulfilledPromise implements PromiseInterface
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{
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private $value;
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/**
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* @param mixed $value
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*/
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public function __construct($value)
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{
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if (is_object($value) && method_exists($value, 'then')) {
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throw new \InvalidArgumentException(
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'You cannot create a FulfilledPromise with a promise.'
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);
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}
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$this->value = $value;
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}
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public function then(
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callable $onFulfilled = null,
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callable $onRejected = null
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): PromiseInterface {
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// Return itself if there is no onFulfilled function.
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if (!$onFulfilled) {
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return $this;
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}
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$queue = Utils::queue();
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$p = new Promise([$queue, 'run']);
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$value = $this->value;
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$queue->add(static function () use ($p, $value, $onFulfilled): void {
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if (Is::pending($p)) {
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try {
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$p->resolve($onFulfilled($value));
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} catch (\Throwable $e) {
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$p->reject($e);
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}
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}
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});
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return $p;
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}
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public function otherwise(callable $onRejected): PromiseInterface
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{
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return $this->then(null, $onRejected);
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}
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public function wait(bool $unwrap = true)
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{
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return $unwrap ? $this->value : null;
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}
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public function getState(): string
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{
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return self::FULFILLED;
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}
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public function resolve($value): void
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{
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if ($value !== $this->value) {
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throw new \LogicException('Cannot resolve a fulfilled promise');
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}
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}
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public function reject($reason): void
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{
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throw new \LogicException('Cannot reject a fulfilled promise');
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}
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public function cancel(): void
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{
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// pass
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}
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}
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