C++ bindings

mojo/public/system/macros.h

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MOJO_PUBLIC_SYSTEM_MACROS_H_
+#define MOJO_PUBLIC_SYSTEM_MACROS_H_
+
+#ifdef __cplusplus
+
+namespace mojo {
+
+// Annotate a virtual method indicating it must be overriding a virtual
+// method in the parent class.
+// Use like:
+//   virtual void foo() OVERRIDE;
+#if defined(_MSC_VER)
+#define MOJO_OVERRIDE override
+#elif defined(__clang__)
+#define MOJO_OVERRIDE override
+#else
+#define MOJO_OVERRIDE
+#endif
+
+// Used to assert things at compile time.
+namespace internal { template <bool> struct CompileAssert {}; }
+#define MOJO_COMPILE_ASSERT(expr, msg) \
+    typedef internal::CompileAssert<(bool(expr))> msg[bool(expr) ? 1 : -1]
+
+}  // namespace mojo
+
+#endif  // __cplusplus
+
+#endif  // MOJO_PUBLIC_SYSTEM_MACROS_H_