private static byte[] CompressUnsignedInteger(int value)
{
var stream = new MemoryStream();
var writer = new BinaryWriter(stream);
writer.WriteCompressedUInt((uint)value);
return stream.ToArray();
}
internal uint GetBlobIndex(ImmutableArray <byte> blob)
{
uint result = 0;
if (blob.Length == 0 || _blobIndex.TryGetValue(blob, out result))
{
return(result);
}
Debug.Assert(!_streamsAreComplete);
result = _blobWriter.BaseStream.Position + (uint)_blobIndexStartOffset;
_blobIndex.Add(blob, result);
_blobWriter.WriteCompressedUInt((uint)blob.Length);
_blobWriter.WriteBytes(blob);
return(result);
}
public uint GetUserStringToken(string str)
{
uint index;
if (!_userStringIndex.TryGetValue(str, out index))
{
Debug.Assert(!_streamsAreComplete);
index = _userStringWriter.BaseStream.Position + (uint)_userStringIndexStartOffset;
_userStringIndex.Add(str, index);
_userStringWriter.WriteCompressedUInt((uint)str.Length * 2 + 1);
_userStringWriter.WriteChars(str.ToCharArray());
// Write out a trailing byte indicating if the string is really quite simple
byte stringKind = 0;
foreach (char ch in str)
{
if (ch >= 0x7F)
{
stringKind = 1;
}
else
{
switch ((int)ch)
{
case 0x1:
case 0x2:
case 0x3:
case 0x4:
case 0x5:
case 0x6:
case 0x7:
case 0x8:
case 0xE:
case 0xF:
case 0x10:
case 0x11:
case 0x12:
case 0x13:
case 0x14:
case 0x15:
case 0x16:
case 0x17:
case 0x18:
case 0x19:
case 0x1A:
case 0x1B:
case 0x1C:
case 0x1D:
case 0x1E:
case 0x1F:
case 0x27:
case 0x2D:
stringKind = 1;
break;
default:
continue;
}
}
break;
}
_userStringWriter.WriteByte(stringKind);
}
return(0x70000000 | index);
}
