Implementation of Platform class that exposes information about the machine and the OS.

runtime/bin/platform.dart

+// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+/**
+ * The [Platform] class exposes details of the machine and operating
+ * system.
+ */
+interface Platform factory _Platform {
+  /**
+   * Create a Platform object.
+   */
+  Platform();
+
+  /**
+   * Get the number of processors of the machine.
+   */
+  int numberOfProcessors();
+
+  /**
+   * Get the path separator used by the operating system to separate
+   * components in file paths.
+   */
+  String pathSeparator();
+
+  /**
+   * Get a string ('macos', 'windows', 'linux') representing the
+   * operating system.
+   */
+  String operatingSystem();
+}