/usr/include/autobahn/wamp_message.hpp is in autobahn-cpp-dev 17.5.1+git7cc5d37-2.
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//
// Copyright (c) Crossbar.io Technologies GmbH and contributors
//
// Boost Software License - Version 1.0 - August 17th, 2003
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// DEALINGS IN THE SOFTWARE.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef AUTOBAHN_WAMP_MESSAGE_HPP
#define AUTOBAHN_WAMP_MESSAGE_HPP
#include <cstddef>
#include <msgpack.hpp>
#include <vector>
namespace autobahn {
/*!
* A class that represents a wamp message in its simplest form.
*
* [field1, field2, field3, ...]
*
* Although not all arrays are valid wamp messages, this class
* simply provides the building blocks to construct any type of
* message.
*
* TODO: Investigate the benefits of creating a hierarchy of
* wamp message types similar to what has been done for
* bonefish.
*/
class wamp_message
{
public:
/*!
* A convenience type for representing message fields
*/
using message_fields = std::vector<msgpack::object>;
public:
/*!
* Constructs a wamp message with the given number of fields.
*
* @param num_fields The number of fields in the message.
*/
wamp_message(std::size_t num_fields);
/*!
* Constructs a wamp message with the given number of fields.
*
* @param num_fields The number of fields in the message.
* @param zone The zone used to allocate fields in the message.
*/
wamp_message(std::size_t num_fields, msgpack::zone&& zone);
/*!
* Constructs a wamp message with the given fields.
*
* @param fields The fields in the message.
* @param zone The zone used to allocate fields in the message.
*/
wamp_message(message_fields&& fields, msgpack::zone&& zone);
wamp_message(const wamp_message& other) = delete;
wamp_message(wamp_message&& other);
wamp_message& operator=(const wamp_message& other) = delete;
wamp_message& operator=(wamp_message&& other);
/*!
* Retrieves the field at the specified index. Throws an exception
* if the index is out of bounds.
*
* @param index The index of the target field.
*
* @return The retrieved type.
*/
const msgpack::object& field(std::size_t index) const;
/*!
* Retrieves the field at the specified index. Throws an exception
* if the index is out of bounds or if the field cannot be retrieved
* as the specified type.
*
* @tparam Type The field's type.
* @param index The index of the target field.
*
* @return The retrieved type.
*/
template <typename Type>
Type field(std::size_t index);
/*!
* Sets the field at the specified index. Throws an exception if the
* index is out of bounds.
*
* @tparam Type The field's type.
* @param index The index of the target field.
* @param type The type to store in the target field.
*/
template <typename Type>
void set_field(std::size_t index, const Type& type);
/*!
* Determines if the field at the specified index is of the given type.
*
* @param index The index of the target field.
* @param type The field type to check against.
*/
bool is_field_type(std::size_t index, msgpack::type::object_type type) const;
/*!
* Retrieves the number of fields in the message.
*
* @return The number of fields in the message.
*/
std::size_t size() const;
/*!
* The message fields.
*
* @return The message fields.
*/
const message_fields& fields() const;
/*!
* Pilfers the message fields.
*
* @return The message fields.
*/
message_fields&& fields();
/*!
* Pilfers the message zone.
*
* @return The message zone.
*/
msgpack::zone&& zone();
private:
/*!
* The zone used to allocate message fields. The zone must outlive
* the fields. If the fields are pilfered then the zone must also
* be pilferred and stored along with the fields.
*/
msgpack::zone m_zone;
/*!
* The fields comprising of the message. It is up to the user of this
* class to ensure that a valid wamp message has been constructed.
*/
message_fields m_fields;
};
/// Convenience operator for outputting a raw wamp message.
std::ostream& operator<<(std::ostream& os, const wamp_message& message);
} // namespace autobahn
#include "wamp_message.ipp"
#endif // AUTOBAHN_WAMP_MESSAGE_HPP
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