| // 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. |
| |
| #include "lib/fidl/cpp/decoder.h" |
| |
| #include <utility> |
| |
| namespace fidl { |
| |
| Decoder::Decoder(Message message) : message_(std::move(message)) {} |
| |
| Decoder::~Decoder() = default; |
| |
| size_t Decoder::GetOffset(void* ptr) { return GetOffset(reinterpret_cast<uintptr_t>(ptr)); } |
| |
| size_t Decoder::GetOffset(uintptr_t ptr) { |
| // The |ptr| value comes from the message buffer, which we've already |
| // validated. That means it should coorespond to a valid offset within the |
| // message. |
| return ptr - reinterpret_cast<uintptr_t>(message_.bytes().data()); |
| } |
| |
| #ifdef __Fuchsia__ |
| void Decoder::DecodeHandle(zx::object_base* value, size_t offset) { |
| zx_handle_t* handle = GetPtr<zx_handle_t>(offset); |
| value->reset(*handle); |
| *handle = ZX_HANDLE_INVALID; |
| } |
| #endif |
| |
| uint8_t* Decoder::InternalGetPtr(size_t offset) { return message_.bytes().data() + offset; } |
| |
| } // namespace fidl |
