public static Decimal ReadDecimal(this BufferSlice buffer, int offset)
{
var a = buffer.ReadInt32(offset);
var b = buffer.ReadInt32(offset + 4);
var c = buffer.ReadInt32(offset + 8);
var d = buffer.ReadInt32(offset + 12);
return(new Decimal(new int[] { a, b, c, d }));
}
/// <summary>
/// Read any BsonValue. Use 1 byte for data type, 1 byte for length (optional), 0-255 bytes to value.
/// For document or array, use BufferReader
/// </summary>
public static BsonValue ReadIndexKey(this BufferSlice buffer, int offset)
{
ExtendedLengthHelper.ReadLength(buffer[offset++], buffer[offset], out var type, out var len);
switch (type)
{
case BsonType.Null: return(BsonValue.Null);
case BsonType.Int32: return(buffer.ReadInt32(offset));
case BsonType.Int64: return(buffer.ReadInt64(offset));
case BsonType.Double: return(buffer.ReadDouble(offset));
case BsonType.Decimal: return(buffer.ReadDecimal(offset));
case BsonType.String:
offset++; // for byte length
return(buffer.ReadString(offset, len));
case BsonType.Document:
using (var r = new BufferReader(buffer))
{
r.Skip(offset); // skip first byte for value.Type
return(r.ReadDocument());
}
case BsonType.Array:
using (var r = new BufferReader(buffer))
{
r.Skip(offset); // skip first byte for value.Type
return(r.ReadArray());
}
case BsonType.Binary:
offset++; // for byte length
return(buffer.ReadBytes(offset, len));
case BsonType.ObjectId: return(buffer.ReadObjectId(offset));
case BsonType.Guid: return(buffer.ReadGuid(offset));
case BsonType.Boolean: return(buffer[offset] != 0);
case BsonType.DateTime: return(buffer.ReadDateTime(offset));
case BsonType.MinValue: return(BsonValue.MinValue);
case BsonType.MaxValue: return(BsonValue.MaxValue);
default: throw new NotImplementedException();
}
}
