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Java/C#/Python prefixed size support (#4445)

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* initial changes to support size prefixed buffers in Java

* add slice equivalent to CSharp ByteBuffer

* resolve TODO for slicing in CSharp code generation

* add newly generated Java and CSharp test sources

* fix typo in comment

* add FinishSizePrefixed methods to CSharp FlatBufferBuilder as well

* add option to allow writing the prefix as well

* generate size-prefixed monster binary as well

* extend JavaTest to test the size prefixed binary as well

* use constants for size prefix length

* fuse common code for getRootAs and getSizePrefixedRootAs

* pulled file identifier out of if

* add FinishSizePrefixed, GetSizePrefixedRootAs support for Python

* Revert "extend JavaTest to test the size prefixed binary as well"

This reverts commit 68be4420dd.

* Revert "generate size-prefixed monster binary as well"

This reverts commit 2939516fdf.

* fix ByteBuffer.cs Slice() method; add proper CSharp and Java tests

* fix unused parameter

* increment version number

* pulled out generated methods into separate utility class

* pulled out generated methods into separate utility class for Python

* fix indentation

* remove unnecessary comment

* fix newline and copyright

* add ByteBufferUtil to csproj compilation

* hide ByteBuffer's internal data; track offset into parent's array

* test unsafe versions as well; compile and run in debug mode

* clarify help text for size prefix

* move ByteBuffer slicing behavior to subclass

* fix protection levels

* add size prefix support for text generation

* add ByteBufferSlice to csproj compilation

* revert size prefix handling for nested buffers

* use duplicate instead of slice for removing size prefix

* remove slice subclass and use duplicate for removing size prefix

* remove slice specific tests

* remove superfluous command line option
This commit is contained in:
Robert Schmidtke
2018-03-12 19:30:46 +01:00
committed by Wouter van Oortmerssen
parent 6b3f057bdc
commit 08cf50c54a
24 changed files with 663 additions and 201 deletions
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17
net/FlatBuffers/Table.cs
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@@ -60,7 +60,7 @@ namespace FlatBuffers
offset += bb.GetInt(offset);
var len = bb.GetInt(offset);
var startPos = offset + sizeof(int);
return Encoding.UTF8.GetString(bb.Data, startPos , len);
return bb.GetStringUTF8(startPos, len);
}
// Get the length of a vector whose offset is stored at "offset" in this object.
@@ -91,7 +91,7 @@ namespace FlatBuffers
var pos = this.__vector(o);
var len = this.__vector_len(o);
return new ArraySegment<byte>(this.bb.Data, pos, len);
return bb.ToArraySegment(pos, len);
}
// Initialize any Table-derived type to point to the union at the given offset.
@@ -126,10 +126,11 @@ namespace FlatBuffers
var startPos_1 = offset_1 + sizeof(int);
var startPos_2 = offset_2 + sizeof(int);
var len = Math.Min(len_1, len_2);
byte[] bbArray = bb.Data;
for(int i = 0; i < len; i++) {
if (bbArray[i + startPos_1] != bbArray[i + startPos_2])
return bbArray[i + startPos_1] - bbArray[i + startPos_2];
byte b1 = bb.Get(i + startPos_1);
byte b2 = bb.Get(i + startPos_2);
if (b1 != b2)
return b1 - b2;
}
return len_1 - len_2;
}
@@ -142,10 +143,10 @@ namespace FlatBuffers
var len_2 = key.Length;
var startPos_1 = offset_1 + sizeof(int);
var len = Math.Min(len_1, len_2);
byte[] bbArray = bb.Data;
for (int i = 0; i < len; i++) {
if (bbArray[i + startPos_1] != key[i])
return bbArray[i + startPos_1] - key[i];
byte b = bb.Get(i + startPos_1);
if (b != key[i])
return b - key[i];
}
return len_1 - len_2;
}