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Made reading read-only ByteBuffers work.

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Also added new constructor that allows ByteBuffer reuse.

Change-Id: I9c20ea96c67533066461f4e23b0d03b9b47cd068
Tested: on OS X.
This commit is contained in:
Wouter van Oortmerssen
2014-09-02 18:35:20 -07:00
parent 8e40902d52
commit 4507594812
3 changed files with 24 additions and 3 deletions
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10
java/flatbuffers/FlatBufferBuilder.java
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@@ -30,7 +30,7 @@ public class FlatBufferBuilder {
int space; // Remaining space in the ByteBuffer.
static final Charset utf8charset = Charset.forName("UTF-8");
int minalign = 1; // Minimum alignment encountered so far.
int[] vtable; // The vtable for the current table, null otherwise.
int[] vtable = null; // The vtable for the current table, null otherwise.
int object_start; // Starting offset of the current struct/table.
int[] vtables = new int[16]; // List of offsets of all vtables.
int num_vtables = 0; // Number of entries in `vtables` in use.
@@ -47,6 +47,14 @@ public class FlatBufferBuilder {
bb = newByteBuffer(new byte[initial_size]);
}
// Alternative constructor allowing reuse of ByteBuffers
public FlatBufferBuilder(ByteBuffer existing_bb) {
bb = existing_bb;
bb.clear();
bb.order(ByteOrder.LITTLE_ENDIAN);
space = bb.capacity();
}
ByteBuffer newByteBuffer(byte[] buf) {
ByteBuffer newbb = ByteBuffer.wrap(buf);
newbb.order(ByteOrder.LITTLE_ENDIAN);