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CLK/Machines/DynamicMachine.hpp

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//
// DynamicMachine.hpp
// Clock Signal
//
// Created by Thomas Harte on 29/01/2018.
// Copyright 2018 Thomas Harte. All rights reserved.
//
#ifndef DynamicMachine_h
#define DynamicMachine_h
#include "../Configurable/Configurable.hpp"
#include "../Activity/Source.hpp"
#include "MachineTypes.hpp"
namespace Machine {
/*!
Provides the structure for owning a machine and dynamically casting it as desired without knowledge of
the machine's parent class or, therefore, the need to establish a common one.
*/
struct DynamicMachine {
virtual ~DynamicMachine() {}
virtual Activity::Source *activity_source() = 0;
virtual Configurable::Device *configurable_device() = 0;
virtual MachineTypes::TimedMachine *timed_machine() = 0;
virtual MachineTypes::ScanProducer *scan_producer() = 0;
virtual MachineTypes::AudioProducer *audio_producer() = 0;
virtual MachineTypes::JoystickMachine *joystick_machine() = 0;
virtual MachineTypes::KeyboardMachine *keyboard_machine() = 0;
virtual MachineTypes::MouseMachine *mouse_machine() = 0;
virtual MachineTypes::MediaTarget *media_target() = 0;
/*!
Provides a raw pointer to the underlying machine if and only if this dynamic machine really is
only a single machine.
Very unsafe. Very temporary.
TODO: eliminate in favour of introspection for machine-specific inputs. This is here temporarily
only to permit continuity of certain features in the Mac port that have not yet made their way
to the SDL/console port.
*/
virtual void *raw_pointer() = 0;
};
/*!
Provides a templateable means to access the above.
*/
template <typename MachineType> MachineType *get(DynamicMachine &);
#define SpecialisedGet(type, name) \
template <> \
inline type *get<type>(DynamicMachine &machine) { \
return machine.name(); \
}
SpecialisedGet(Activity::Source, activity_source)
SpecialisedGet(Configurable::Device, configurable_device)
SpecialisedGet(MachineTypes::TimedMachine, timed_machine)
SpecialisedGet(MachineTypes::ScanProducer, scan_producer)
SpecialisedGet(MachineTypes::AudioProducer, audio_producer)
SpecialisedGet(MachineTypes::JoystickMachine, joystick_machine)
SpecialisedGet(MachineTypes::KeyboardMachine, keyboard_machine)
SpecialisedGet(MachineTypes::MouseMachine, mouse_machine)
SpecialisedGet(MachineTypes::MediaTarget, media_target)
#undef SpecialisedGet
}
#endif /* DynamicMachine_h */