public BsonValue FetchCurrentValue()
{
CheckDisposed();
if (_entryDataSkipped)
{
return(_entryDataValue);
}
_entryDataSkipped = true;
switch (_ctype)
{
case BsonType.EOO:
case BsonType.UNDEFINED:
case BsonType.NULL:
case BsonType.MAXKEY:
case BsonType.MINKEY:
_entryDataValue = new BsonValue(_ctype, _entryKey);
break;
case BsonType.OID:
Debug.Assert(_entryLen == 12);
_entryDataValue = new BsonValue(_ctype, _entryKey, new ObjectId(_input));
break;
case BsonType.STRING:
case BsonType.CODE:
case BsonType.SYMBOL:
{
Debug.Assert(_entryLen - 1 >= 0);
string sv = Encoding.UTF8.GetString(_input.ReadBytes(_entryLen - 1));
_entryDataValue = new BsonValue(_ctype, _entryKey, sv);
var rb = _input.ReadByte();
Debug.Assert(rb == 0x00); //trailing zero byte
break;
}
case BsonType.BOOL:
_entryDataValue = new BsonValue(_ctype, _entryKey, _input.ReadBoolean());
break;
case BsonType.INT:
_entryDataValue = new BsonValue(_ctype, _entryKey, _input.ReadInt32());
break;
case BsonType.OBJECT:
case BsonType.ARRAY:
{
BsonDocument doc = (_ctype == BsonType.OBJECT ? new BsonDocument() : new BsonArray());
BsonIterator sit = new BsonIterator(this);
while (sit.Next() != BsonType.EOO)
{
doc.Add(sit.FetchCurrentValue());
}
_entryDataValue = new BsonValue(_ctype, _entryKey, doc);
break;
}
case BsonType.DOUBLE:
_entryDataValue = new BsonValue(_ctype, _entryKey, _input.ReadDouble());
break;
case BsonType.LONG:
_entryDataValue = new BsonValue(_ctype, _entryKey, _input.ReadInt64());
break;
case BsonType.DATE:
_entryDataValue = new BsonValue(_ctype, _entryKey,
BsonConstants.Epoch.AddMilliseconds(_input.ReadInt64()));
break;
case BsonType.TIMESTAMP:
{
int inc = _input.ReadInt32();
int ts = _input.ReadInt32();
_entryDataValue = new BsonValue(_ctype, _entryKey,
new BsonTimestamp(inc, ts));
break;
}
case BsonType.REGEX:
{
string re = _input.ReadCString();
string opts = _input.ReadCString();
_entryDataValue = new BsonValue(_ctype, _entryKey,
new BsonRegexp(re, opts));
break;
}
case BsonType.BINDATA:
{
byte subtype = _input.ReadByte();
BsonBinData bd = new BsonBinData(subtype, _entryLen - 1, _input);
_entryDataValue = new BsonValue(_ctype, _entryKey, bd);
break;
}
case BsonType.DBREF:
{
//Unsupported DBREF!
SkipData(true);
_entryDataValue = new BsonValue(_ctype, _entryKey);
break;
}
case BsonType.CODEWSCOPE:
{
int cwlen = _entryLen + 4;
Debug.Assert(cwlen > 5);
int clen = _input.ReadInt32(); //code length
string code = Encoding.UTF8.GetString(_input.ReadBytes(clen));
BsonCodeWScope cw = new BsonCodeWScope(code);
BsonIterator sit = new BsonIterator(_input, _input.ReadInt32());
while (sit.Next() != BsonType.EOO)
{
cw.Add(sit.FetchCurrentValue());
}
_entryDataValue = new BsonValue(_ctype, _entryKey, cw);
break;
}
}
return(_entryDataValue);
}
