Initial Commit

dependencies/amphp/amp/lib/TimeoutCancellationToken.php

@@ -0,0 +1,65 @@
+<?php
+
+namespace WP_Ultimo\Dependencies\Amp;
+
+use function WP_Ultimo\Dependencies\Amp\Internal\formatStacktrace;
+/**
+ * A TimeoutCancellationToken automatically requests cancellation after the timeout has elapsed.
+ */
+final class TimeoutCancellationToken implements CancellationToken
+{
+    /** @var string */
+    private $watcher;
+    /** @var CancellationToken */
+    private $token;
+    /**
+     * @param int    $timeout Milliseconds until cancellation is requested.
+     * @param string $message Message for TimeoutException. Default is "Operation timed out".
+     */
+    public function __construct(int $timeout, string $message = "Operation timed out")
+    {
+        $source = new CancellationTokenSource();
+        $this->token = $source->getToken();
+        $trace = \debug_backtrace(\DEBUG_BACKTRACE_IGNORE_ARGS);
+        $this->watcher = Loop::delay($timeout, static function () use($source, $message, $trace) {
+            $trace = formatStacktrace($trace);
+            $source->cancel(new TimeoutException("{$message}\r\nTimeoutCancellationToken was created here:\r\n{$trace}"));
+        });
+        Loop::unreference($this->watcher);
+    }
+    /**
+     * Cancels the delay watcher.
+     */
+    public function __destruct()
+    {
+        Loop::cancel($this->watcher);
+    }
+    /**
+     * {@inheritdoc}
+     */
+    public function subscribe(callable $callback) : string
+    {
+        return $this->token->subscribe($callback);
+    }
+    /**
+     * {@inheritdoc}
+     */
+    public function unsubscribe(string $id)
+    {
+        $this->token->unsubscribe($id);
+    }
+    /**
+     * {@inheritdoc}
+     */
+    public function isRequested() : bool
+    {
+        return $this->token->isRequested();
+    }
+    /**
+     * {@inheritdoc}
+     */
+    public function throwIfRequested()
+    {
+        $this->token->throwIfRequested();
+    }
+}