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vendor/guzzlehttp/promises/src/Each.php

@@ -0,0 +1,81 @@
+<?php
+
+declare(strict_types=1);
+
+namespace GuzzleHttp\Promise;
+
+final class Each
+{
+    /**
+     * Given an iterator that yields promises or values, returns a promise that
+     * is fulfilled with a null value when the iterator has been consumed or
+     * the aggregate promise has been fulfilled or rejected.
+     *
+     * $onFulfilled is a function that accepts the fulfilled value, iterator
+     * index, and the aggregate promise. The callback can invoke any necessary
+     * side effects and choose to resolve or reject the aggregate if needed.
+     *
+     * $onRejected is a function that accepts the rejection reason, iterator
+     * index, and the aggregate promise. The callback can invoke any necessary
+     * side effects and choose to resolve or reject the aggregate if needed.
+     *
+     * @param mixed $iterable Iterator or array to iterate over.
+     */
+    public static function of(
+        $iterable,
+        ?callable $onFulfilled = null,
+        ?callable $onRejected = null
+    ): PromiseInterface {
+        return (new EachPromise($iterable, [
+            'fulfilled' => $onFulfilled,
+            'rejected' => $onRejected,
+        ]))->promise();
+    }
+
+    /**
+     * Like of, but only allows a certain number of outstanding promises at any
+     * given time.
+     *
+     * $concurrency may be an integer or a function that accepts the number of
+     * pending promises and returns a numeric concurrency limit value to allow
+     * for dynamic a concurrency size.
+     *
+     * @param mixed        $iterable
+     * @param int|callable $concurrency
+     */
+    public static function ofLimit(
+        $iterable,
+        $concurrency,
+        ?callable $onFulfilled = null,
+        ?callable $onRejected = null
+    ): PromiseInterface {
+        return (new EachPromise($iterable, [
+            'fulfilled' => $onFulfilled,
+            'rejected' => $onRejected,
+            'concurrency' => $concurrency,
+        ]))->promise();
+    }
+
+    /**
+     * Like limit, but ensures that no promise in the given $iterable argument
+     * is rejected. If any promise is rejected, then the aggregate promise is
+     * rejected with the encountered rejection.
+     *
+     * @param mixed        $iterable
+     * @param int|callable $concurrency
+     */
+    public static function ofLimitAll(
+        $iterable,
+        $concurrency,
+        ?callable $onFulfilled = null
+    ): PromiseInterface {
+        return self::ofLimit(
+            $iterable,
+            $concurrency,
+            $onFulfilled,
+            function ($reason, $idx, PromiseInterface $aggregate): void {
+                $aggregate->reject($reason);
+            }
+        );
+    }
+}