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 BSONOid(_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);
}
