Mojo: Move mojo/public/bindings/*.h to mojo/public/cpp/bindings/*.h.

mojo/public/bindings/message.h

-// Copyright 2014 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_BINDINGS_MESSAGE_H_
-#define MOJO_PUBLIC_BINDINGS_MESSAGE_H_
-
-#include <assert.h>
-
-#include <vector>
-
-#include "mojo/public/bindings/lib/message_internal.h"
-
-namespace mojo {
-
-// Message is a holder for the data and handles to be sent over a MessagePipe.
-// Message owns its data and handles, but a consumer of Message is free to
-// mutate the data and handles. The message's data is comprised of a header
-// followed by payload.
-class Message {
- public:
-  Message();
-  ~Message();
-
-  // These may only be called on a newly created Message object.
-  void AllocUninitializedData(uint32_t num_bytes);
-  void AdoptData(uint32_t num_bytes, internal::MessageData* data);
-
-  // Swaps data and handles between this Message and another.
-  void Swap(Message* other);
-
-  uint32_t data_num_bytes() const { return data_num_bytes_; }
-
-  // Access the raw bytes of the message.
-  const uint8_t* data() const { return
-    reinterpret_cast<const uint8_t*>(data_);
-  }
-  uint8_t* mutable_data() { return reinterpret_cast<uint8_t*>(data_); }
-
-  // Access the header.
-  const internal::MessageHeader* header() const { return &data_->header; }
-
-  uint32_t name() const { return data_->header.name; }
-  bool has_flag(uint32_t flag) const { return !!(data_->header.flags & flag); }
-
-  // Access the request_id field (if present).
-  bool has_request_id() const { return data_->header.num_fields >= 3; }
-  uint64_t request_id() const {
-    assert(has_request_id());
-    return static_cast<const internal::MessageHeaderWithRequestID*>(
-        &data_->header)->request_id;
-  }
-  void set_request_id(uint64_t request_id) {
-    assert(has_request_id());
-    static_cast<internal::MessageHeaderWithRequestID*>(&data_->header)->
-        request_id = request_id;
-  }
-
-  // Access the payload.
-  const uint8_t* payload() const {
-    return reinterpret_cast<const uint8_t*>(data_) + data_->header.num_bytes;
-  }
-  uint8_t* mutable_payload() {
-    return reinterpret_cast<uint8_t*>(data_) + data_->header.num_bytes;
-  }
-
-  // Access the handles.
-  const std::vector<Handle>* handles() const { return &handles_; }
-  std::vector<Handle>* mutable_handles() { return &handles_; }
-
- private:
-  uint32_t data_num_bytes_;
-  internal::MessageData* data_;  // Heap-allocated using malloc.
-  std::vector<Handle> handles_;
-
-  MOJO_DISALLOW_COPY_AND_ASSIGN(Message);
-};
-
-class MessageReceiver {
- public:
-  virtual ~MessageReceiver() {}
-
-  // The receiver may mutate the given message.  Returns true if the message
-  // was accepted and false otherwise, indicating that the message was invalid
-  // or malformed.
-  virtual bool Accept(Message* message) = 0;
-
-  // A variant on Accept that registers a MessageReceiver (known as the
-  // responder) to handle the response message generated from the given
-  // message. The responder's Accept method may be called during
-  // AcceptWithResponder or some time after its return.
-  //
-  // NOTE: Upon returning true, AcceptWithResponder assumes ownership of
-  // |responder| and will delete it after calling |responder->Accept| or upon
-  // its own destruction.
-  //
-  virtual bool AcceptWithResponder(Message* message,
-                                   MessageReceiver* responder) = 0;
-};
-
-// Read a single message from the pipe and dispatch to the given receiver.  The
-// receiver may be null, in which case the message is simply discarded.
-// Returns MOJO_RESULT_SHOULD_WAIT if the caller should wait on the handle to
-// become readable. Returns MOJO_RESULT_OK if a message was dispatched and
-// otherwise returns an error code if something went wrong.
-MojoResult ReadAndDispatchMessage(MessagePipeHandle handle,
-                                  MessageReceiver* receiver,
-                                  bool* receiver_result);
-
-}  // namespace mojo
-
-#endif  // MOJO_PUBLIC_BINDINGS_MESSAGE_H_