Initial Commit

dependencies/amphp/byte-stream/lib/InMemoryStream.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace WP_Ultimo\Dependencies\Amp\ByteStream;
+
+use WP_Ultimo\Dependencies\Amp\Promise;
+use WP_Ultimo\Dependencies\Amp\Success;
+/**
+ * Input stream with a single already known data chunk.
+ */
+final class InMemoryStream implements InputStream
+{
+    private $contents;
+    /**
+     * @param string|null $contents Data chunk or `null` for no data chunk.
+     */
+    public function __construct(string $contents = null)
+    {
+        $this->contents = $contents;
+    }
+    /**
+     * Reads data from the stream.
+     *
+     * @return Promise<string|null> Resolves with the full contents or `null` if the stream has closed / already been consumed.
+     */
+    public function read() : Promise
+    {
+        if ($this->contents === null) {
+            return new Success();
+        }
+        $promise = new Success($this->contents);
+        $this->contents = null;
+        return $promise;
+    }
+}