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Add overloads for C# ByteBuffer/FlatBufferBuilder to allow adding vector blocks from ArraySegments or IntPtr (#7193)

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* Add overloads to Add/Put for ArraySegment and IntPtr

In order to allow using code to reduce memory allocations, add overloads to ByteBuffer's and FlatBuffersBuilder's Put/Add methods that take ArraySegment<T> or IntPtr respectively.
Also, adaptions to the c# code generator in flatc to emit corresponding CreateVectorBlock() overloads

* Add missing files generated with generate_code.py

The previous commit changed the C# code generate, but didn't contain the updated generated test files.

* Incorporate review findings

(1) Adhere to 80 characters limit.
(2) In FlatBufferBuilder.Add(IntPtr,int), move zero length check topmost and add sanity check against negative input
This commit is contained in:
Jamie-Jameson
2022-04-01 22:35:07 +02:00
committed by GitHub
parent 26c3b3adab
commit c9651b7420
11 changed files with 536 additions and 14 deletions
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4
tests/MyGame/MonsterExtra.cs
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@@ -92,10 +92,14 @@ public struct MonsterExtra : IFlatbufferObject
public static void AddDvec(FlatBufferBuilder builder, VectorOffset dvecOffset) { builder.AddOffset(8, dvecOffset.Value, 0); }
public static VectorOffset CreateDvecVector(FlatBufferBuilder builder, double[] data) { builder.StartVector(8, data.Length, 8); for (int i = data.Length - 1; i >= 0; i--) builder.AddDouble(data[i]); return builder.EndVector(); }
public static VectorOffset CreateDvecVectorBlock(FlatBufferBuilder builder, double[] data) { builder.StartVector(8, data.Length, 8); builder.Add(data); return builder.EndVector(); }
public static VectorOffset CreateDvecVectorBlock(FlatBufferBuilder builder, ArraySegment<double> data) { builder.StartVector(8, data.Count, 8); builder.Add(data); return builder.EndVector(); }
public static VectorOffset CreateDvecVectorBlock(FlatBufferBuilder builder, IntPtr dataPtr, int sizeInBytes) { builder.StartVector(1, sizeInBytes, 1); builder.Add<double>(dataPtr, sizeInBytes); return builder.EndVector(); }
public static void StartDvecVector(FlatBufferBuilder builder, int numElems) { builder.StartVector(8, numElems, 8); }
public static void AddFvec(FlatBufferBuilder builder, VectorOffset fvecOffset) { builder.AddOffset(9, fvecOffset.Value, 0); }
public static VectorOffset CreateFvecVector(FlatBufferBuilder builder, float[] data) { builder.StartVector(4, data.Length, 4); for (int i = data.Length - 1; i >= 0; i--) builder.AddFloat(data[i]); return builder.EndVector(); }
public static VectorOffset CreateFvecVectorBlock(FlatBufferBuilder builder, float[] data) { builder.StartVector(4, data.Length, 4); builder.Add(data); return builder.EndVector(); }
public static VectorOffset CreateFvecVectorBlock(FlatBufferBuilder builder, ArraySegment<float> data) { builder.StartVector(4, data.Count, 4); builder.Add(data); return builder.EndVector(); }
public static VectorOffset CreateFvecVectorBlock(FlatBufferBuilder builder, IntPtr dataPtr, int sizeInBytes) { builder.StartVector(1, sizeInBytes, 1); builder.Add<float>(dataPtr, sizeInBytes); return builder.EndVector(); }
public static void StartFvecVector(FlatBufferBuilder builder, int numElems) { builder.StartVector(4, numElems, 4); }
public static Offset<MyGame.MonsterExtra> EndMonsterExtra(FlatBufferBuilder builder) {
int o = builder.EndTable();