protected ImmutableState(ImmutableState prev, Register register, ushort value)
{
_memory = prev._memory;
_regs = prev._regs.Set((int)register, value);
_deviceStates = prev._deviceStates;
_memoryMap = prev._memoryMap;
}
protected ImmutableState(ImmutableState prev, IEvent e)
{
_memory = prev._memory;
_regs = prev._regs;
_memoryMap = prev._memoryMap;
_deviceStates = new Dictionary<string, DeviceState>(prev._deviceStates);
_deviceStates[e.DeviceId] = _deviceStates[e.DeviceId].Handle(e);
}
protected ImmutableState(ImmutableState prev, ushort from, ushort to, DeviceState device)
{
_memory = prev._memory;
_regs = prev._regs;
_memoryMap = new MemoryMap(prev._memoryMap);
_memoryMap.Map(from, to, device.Id);
_deviceStates = new Dictionary<string,DeviceState>(prev._deviceStates);
_deviceStates[device.Id] = device;
}
protected ImmutableState(ImmutableState prev, ushort addr, ushort value)
{
_memory = prev._memory;
_regs = prev._regs;
_memoryMap = prev._memoryMap;
var deviceId = prev._memoryMap[addr];
if (deviceId == null) {
_memory = _memory.Set(addr, value);
_deviceStates = prev._deviceStates;
} else {
_deviceStates = new Dictionary<string, DeviceState>(prev._deviceStates);
_deviceStates[deviceId] = prev._deviceStates[deviceId].Write(addr, value);
}
}