| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #pragma once |
| |
| #include <fbl/type_support.h> |
| |
| namespace ddk { |
| namespace internal { |
| |
| DECLARE_HAS_MEMBER_FN_WITH_SIGNATURE(has_canvas_config, CanvasConfig, |
| zx_status_t (C::*)(zx_handle_t, size_t, canvas_info_t*, uint8_t*)); |
| DECLARE_HAS_MEMBER_FN_WITH_SIGNATURE(has_canvas_free, CanvasFree, |
| zx_status_t (C::*)(uint8_t)); |
| |
| template <typename D> |
| constexpr void CheckCanvasProtocolSubclass() { |
| static_assert(internal::has_canvas_config<D>::value, |
| "CanvasProtocol subclasses must implement " |
| "CanvasConfig(zx_handle_t vmo, size_t offset, canvas_info_t* info, " |
| "uint8_t* canvas_idx)"); |
| static_assert(internal::has_canvas_free<D>::value, |
| "CanvasProtocol subclasses must implement " |
| "CanvasFree(uint8_t canvas_idx)"); |
| } |
| |
| } // namespace internal |
| } // namespace ddk |
