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Add element size parameter to __vector_as_arraysegment [c#] (#5512)

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* Add element size parameter to __vector_as_arraysegment

Add element size parameter to __vector_as_arraysegment fixing issue where VectorAsBytes returns incorrect size span for multibyte element types.

* Update codegen

Update codegen and Table to return typed span.

* update test files

update test files
This commit is contained in:
Kevin Fort
2019-09-10 19:07:46 -05:00
committed by Wouter van Oortmerssen
parent b5560fcd52
commit 2706381eef
8 changed files with 38 additions and 24 deletions
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13
net/FlatBuffers/Table.cs
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@@ -16,6 +16,7 @@
using System;
using System.Text;
using System.Runtime.InteropServices;
namespace FlatBuffers
{
@@ -89,17 +90,23 @@ namespace FlatBuffers
// Get the data of a vector whoses offset is stored at "offset" in this object as an
// Spant<byte>. If the vector is not present in the ByteBuffer,
// then an empty span will be returned.
public Span<byte> __vector_as_span(int offset)
public Span<T> __vector_as_span<T>(int offset, int elementSize) where T : struct
{
if (!BitConverter.IsLittleEndian)
{
throw new NotSupportedException("Getting typed span on a Big Endian " +
"system is not support");
}
var o = this.__offset(offset);
if (0 == o)
{
return new Span<byte>();
return new Span<T>();
}
var pos = this.__vector(o);
var len = this.__vector_len(o);
return bb.ToSpan(pos, len);
return MemoryMarshal.Cast<byte, T>(bb.ToSpan(pos, len * elementSize));
}
#else
// Get the data of a vector whoses offset is stored at "offset" in this object as an