microsoft/teams.net
Publicmirrored from https://github.com/microsoft/teams.netAvailable
Libraries/Microsoft.Teams.AI.Models.OpenAI/Builders/SequenceBuilder.cs
67lines · modecode
| 1 | using System.Buffers; |
| 2 | using System.Diagnostics; |
| 3 | |
| 4 | namespace Microsoft.Teams.AI.Models.OpenAI.Builders; |
| 5 | |
| 6 | /// <summary> |
| 7 | /// https://github.com/openai/openai-dotnet/blob/main/examples/Chat/Example04_FunctionCallingStreaming.cs#L74 |
| 8 | /// </summary> |
| 9 | public class SequenceBuilder<T> |
| 10 | { |
| 11 | Segment? _first; |
| 12 | Segment? _last; |
| 13 | |
| 14 | public void Append(ReadOnlyMemory<T> data) |
| 15 | { |
| 16 | if (_first is null) |
| 17 | { |
| 18 | Debug.Assert(_last is null); |
| 19 | _first = new Segment(data); |
| 20 | _last = _first; |
| 21 | } |
| 22 | else |
| 23 | { |
| 24 | _last = _last!.Append(data); |
| 25 | } |
| 26 | } |
| 27 | |
| 28 | public ReadOnlySequence<T> Build() |
| 29 | { |
| 30 | if (_first is null) |
| 31 | { |
| 32 | Debug.Assert(_last is null); |
| 33 | return ReadOnlySequence<T>.Empty; |
| 34 | } |
| 35 | |
| 36 | if (_first == _last) |
| 37 | { |
| 38 | Debug.Assert(_first.Next is null); |
| 39 | return new ReadOnlySequence<T>(_first.Memory); |
| 40 | } |
| 41 | |
| 42 | return new ReadOnlySequence<T>(_first, 0, _last!, _last!.Memory.Length); |
| 43 | } |
| 44 | |
| 45 | private sealed class Segment : ReadOnlySequenceSegment<T> |
| 46 | { |
| 47 | public Segment(ReadOnlyMemory<T> items) : this(items, 0) |
| 48 | { |
| 49 | } |
| 50 | |
| 51 | private Segment(ReadOnlyMemory<T> items, long runningIndex) |
| 52 | { |
| 53 | Debug.Assert(runningIndex >= 0); |
| 54 | Memory = items; |
| 55 | RunningIndex = runningIndex; |
| 56 | } |
| 57 | |
| 58 | public Segment Append(ReadOnlyMemory<T> items) |
| 59 | { |
| 60 | long runningIndex; |
| 61 | checked { runningIndex = RunningIndex + Memory.Length; } |
| 62 | Segment segment = new(items, runningIndex); |
| 63 | Next = segment; |
| 64 | return segment; |
| 65 | } |
| 66 | } |
| 67 | } |