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51
vendor/guzzlehttp/promises/src/Promise.php
vendored
51
vendor/guzzlehttp/promises/src/Promise.php
vendored
@@ -1,11 +1,15 @@
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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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* Promises/A+ implementation that avoids recursion when possible.
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*
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* @link https://promisesaplus.com/
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* @see https://promisesaplus.com/
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*
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* @final
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*/
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class Promise implements PromiseInterface
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{
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@@ -31,33 +35,36 @@ class Promise implements PromiseInterface
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public function then(
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callable $onFulfilled = null,
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callable $onRejected = null
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) {
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): PromiseInterface {
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if ($this->state === self::PENDING) {
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$p = new Promise(null, [$this, 'cancel']);
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$this->handlers[] = [$p, $onFulfilled, $onRejected];
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$p->waitList = $this->waitList;
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$p->waitList[] = $this;
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return $p;
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}
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// Return a fulfilled promise and immediately invoke any callbacks.
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if ($this->state === self::FULFILLED) {
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$promise = Create::promiseFor($this->result);
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return $onFulfilled ? $promise->then($onFulfilled) : $promise;
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}
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// It's either cancelled or rejected, so return a rejected promise
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// and immediately invoke any callbacks.
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$rejection = Create::rejectionFor($this->result);
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return $onRejected ? $rejection->then(null, $onRejected) : $rejection;
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}
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public function otherwise(callable $onRejected)
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public function otherwise(callable $onRejected): PromiseInterface
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{
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return $this->then(null, $onRejected);
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}
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public function wait($unwrap = true)
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public function wait(bool $unwrap = true)
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{
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$this->waitIfPending();
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@@ -73,12 +80,12 @@ class Promise implements PromiseInterface
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}
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}
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public function getState()
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public function getState(): string
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{
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return $this->state;
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}
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public function cancel()
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public function cancel(): void
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{
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if ($this->state !== self::PENDING) {
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return;
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@@ -93,8 +100,6 @@ class Promise implements PromiseInterface
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$fn();
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} catch (\Throwable $e) {
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$this->reject($e);
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} catch (\Exception $e) {
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$this->reject($e);
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}
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}
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@@ -105,17 +110,17 @@ class Promise implements PromiseInterface
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}
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}
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public function resolve($value)
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public function resolve($value): void
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{
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$this->settle(self::FULFILLED, $value);
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}
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public function reject($reason)
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public function reject($reason): void
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{
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$this->settle(self::REJECTED, $reason);
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}
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private function settle($state, $value)
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private function settle(string $state, $value): void
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{
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if ($this->state !== self::PENDING) {
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// Ignore calls with the same resolution.
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@@ -148,7 +153,7 @@ class Promise implements PromiseInterface
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if (!is_object($value) || !method_exists($value, 'then')) {
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$id = $state === self::FULFILLED ? 1 : 2;
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// It's a success, so resolve the handlers in the queue.
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Utils::queue()->add(static function () use ($id, $value, $handlers) {
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Utils::queue()->add(static function () use ($id, $value, $handlers): void {
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foreach ($handlers as $handler) {
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self::callHandler($id, $value, $handler);
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}
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@@ -159,12 +164,12 @@ class Promise implements PromiseInterface
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} else {
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// Resolve the handlers when the forwarded promise is resolved.
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$value->then(
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static function ($value) use ($handlers) {
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static function ($value) use ($handlers): void {
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foreach ($handlers as $handler) {
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self::callHandler(1, $value, $handler);
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}
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},
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static function ($reason) use ($handlers) {
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static function ($reason) use ($handlers): void {
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foreach ($handlers as $handler) {
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self::callHandler(2, $reason, $handler);
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}
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@@ -180,7 +185,7 @@ class Promise implements PromiseInterface
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* @param mixed $value Value to pass to the callback.
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* @param array $handler Array of handler data (promise and callbacks).
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*/
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private static function callHandler($index, $value, array $handler)
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private static function callHandler(int $index, $value, array $handler): void
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{
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/** @var PromiseInterface $promise */
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$promise = $handler[0];
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@@ -211,12 +216,10 @@ class Promise implements PromiseInterface
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}
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} catch (\Throwable $reason) {
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$promise->reject($reason);
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} catch (\Exception $reason) {
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$promise->reject($reason);
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}
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}
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private function waitIfPending()
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private function waitIfPending(): void
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{
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if ($this->state !== self::PENDING) {
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return;
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@@ -227,9 +230,9 @@ class Promise implements PromiseInterface
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} else {
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// If there's no wait function, then reject the promise.
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$this->reject('Cannot wait on a promise that has '
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. 'no internal wait function. You must provide a wait '
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. 'function when constructing the promise to be able to '
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. 'wait on a promise.');
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.'no internal wait function. You must provide a wait '
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.'function when constructing the promise to be able to '
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.'wait on a promise.');
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}
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Utils::queue()->run();
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@@ -240,13 +243,13 @@ class Promise implements PromiseInterface
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}
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}
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private function invokeWaitFn()
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private function invokeWaitFn(): void
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{
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try {
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$wfn = $this->waitFn;
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$this->waitFn = null;
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$wfn(true);
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} catch (\Exception $reason) {
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} catch (\Throwable $reason) {
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if ($this->state === self::PENDING) {
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// The promise has not been resolved yet, so reject the promise
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// with the exception.
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@@ -259,7 +262,7 @@ class Promise implements PromiseInterface
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}
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}
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private function invokeWaitList()
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private function invokeWaitList(): void
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{
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$waitList = $this->waitList;
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$this->waitList = null;
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