blob: 292e533eaad4f1d43ef715ee181cb049a2c6e83a [file] [log] [blame]
// 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 <stdint.h>
#include <vector>
#include "src/developer/debug/ipc/protocol.h"
namespace debug_ipc {
struct MsgHeader;
// Provides a simple means to append to a dynamic buffer different types of
// data.
// The first 4 bytes of each message is the message size. It's assumed that
// these bytes will be explicitly written to. Normally a message will start
// with a struct which contains space for this explicitly.
class MessageWriter {
// The argument is a hint for the initial size of the message.
explicit MessageWriter(size_t initial_size);
void WriteBytes(const void* data, uint32_t len);
void WriteInt32(int32_t i);
void WriteUint32(uint32_t i);
void WriteInt64(int64_t i);
void WriteUint64(uint64_t i);
void WriteString(const std::string& str);
void WriteBool(bool b);
void WriteHeader(MsgHeader::Type type, uint32_t transaction_id);
size_t current_length() const { return buffer_.size(); }
// Writes the size of the current buffer to the first 4 bytes, and
// destructively returns the buffer.
std::vector<char> MessageComplete();
std::vector<char> buffer_;
} // namespace debug_ipc