private static libtysila.tydb.Location ReadLocation(Stream s, int locs_offset, int loc_id)
{
libtysila.tydb.Location l = new libtysila.tydb.Location();
long pos = s.Position;
s.Seek((long)(locs_offset + loc_id), SeekOrigin.Begin);
int loc_type = ReadInt(s);
switch (loc_type)
{
case 0:
l.Type = libtysila.tydb.Location.LocationType.Register;
l.RegisterName = ReadString(s);
l.Length = s.ReadByte();
break;
case 1:
l.Type = libtysila.tydb.Location.LocationType.Memory;
l.MemoryLocation = ReadULong(s);
l.Length = s.ReadByte();
break;
case 2:
{
l.Type = libtysila.tydb.Location.LocationType.ContentsOfLocation;
int loc_id_2 = ReadInt(s);
l.Offset = (int)ReadULong(s);
l.Length = s.ReadByte();
l.ContentsOf = ReadLocation(s, locs_offset, loc_id_2);
break;
}
default:
throw new NotSupportedException();
}
s.Seek(pos, SeekOrigin.Begin);
return(l);
}
private int write(List<byte> locations, Dictionary<string, int> location_cache, libtysila.tydb.Location location)
{
if(location_cache.ContainsKey(location.ToString()))
return location_cache[location.ToString()];
int contents_of = -1;
if (location.ContentsOf != null)
contents_of = write(locations, location_cache, location.ContentsOf);
int loc_id = locations.Count;
byte[] buf = null;
switch (location.Type)
{
case libtysila.tydb.Location.LocationType.Register:
buf = new byte[9];
write(buf, 0, 0);
write(buf, 4, location.RegisterName);
buf[8] = (byte)location.Length;
break;
case libtysila.tydb.Location.LocationType.Memory:
buf = new byte[13];
write(buf, 0, 1);
write(buf, 4, location.MemoryLocation);
buf[12] = (byte)location.Length;
break;
case libtysila.tydb.Location.LocationType.ContentsOfLocation:
buf = new byte[17];
write(buf, 0, 2);
write(buf, 4, contents_of);
write(buf, 8, (ulong)location.Offset);
buf[16] = (byte)location.Length;
break;
default:
throw new NotSupportedException();
}
location_cache.Add(location.ToString(), loc_id);
locations.AddRange(buf);
return loc_id;
}
