A feature that officially supports nested FlatBuffers.

Generates convenient accessors for the nested root.

Change-Id: Ic0b1531de7ace475ff2a7b1f430d27f41c838430
Tested: on Windows.

tests/MyGame/Example/Monster.go

@@ -176,7 +176,24 @@ func (rcv *Monster) Enemy(obj *Monster) *Monster {
 	return nil
 }
 
-func MonsterStart(builder *flatbuffers.Builder) { builder.StartObject(13) }
+func (rcv *Monster) Testnestedflatbuffer(j int) byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(30))
+	if o != 0 {
+		a := rcv._tab.Vector(o)
+		return rcv._tab.GetByte(a + flatbuffers.UOffsetT(j * 1))
+	}
+	return 0
+}
+
+func (rcv *Monster) TestnestedflatbufferLength() int {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(30))
+	if o != 0 {
+		return rcv._tab.VectorLen(o)
+	}
+	return 0
+}
+
+func MonsterStart(builder *flatbuffers.Builder) { builder.StartObject(14) }
 func MonsterAddPos(builder *flatbuffers.Builder, pos flatbuffers.UOffsetT) { builder.PrependStructSlot(0, flatbuffers.UOffsetT(pos), 0) }
 func MonsterAddMana(builder *flatbuffers.Builder, mana int16) { builder.PrependInt16Slot(1, mana, 150) }
 func MonsterAddHp(builder *flatbuffers.Builder, hp int16) { builder.PrependInt16Slot(2, hp, 100) }
@@ -193,4 +210,6 @@ func MonsterStartTestarrayofstringVector(builder *flatbuffers.Builder, numElems
 func MonsterAddTestarrayoftables(builder *flatbuffers.Builder, testarrayoftables flatbuffers.UOffsetT) { builder.PrependUOffsetTSlot(11, flatbuffers.UOffsetT(testarrayoftables), 0) }
 func MonsterStartTestarrayoftablesVector(builder *flatbuffers.Builder, numElems int) flatbuffers.UOffsetT { return builder.StartVector(4, numElems) }
 func MonsterAddEnemy(builder *flatbuffers.Builder, enemy flatbuffers.UOffsetT) { builder.PrependUOffsetTSlot(12, flatbuffers.UOffsetT(enemy), 0) }
+func MonsterAddTestnestedflatbuffer(builder *flatbuffers.Builder, testnestedflatbuffer flatbuffers.UOffsetT) { builder.PrependUOffsetTSlot(13, flatbuffers.UOffsetT(testnestedflatbuffer), 0) }
+func MonsterStartTestnestedflatbufferVector(builder *flatbuffers.Builder, numElems int) flatbuffers.UOffsetT { return builder.StartVector(1, numElems) }
 func MonsterEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT { return builder.EndObject() }

tests/MyGame/Example/Monster.java

@@ -31,8 +31,10 @@ public class Monster extends Table {
   public int testarrayoftablesLength() { int o = __offset(26); return o != 0 ? __vector_len(o) : 0; }
   public Monster enemy() { return enemy(new Monster()); }
   public Monster enemy(Monster obj) { int o = __offset(28); return o != 0 ? obj.__init(__indirect(o + bb_pos), bb) : null; }
+  public byte testnestedflatbuffer(int j) { int o = __offset(30); return o != 0 ? bb.get(__vector(o) + j * 1) : 0; }
+  public int testnestedflatbufferLength() { int o = __offset(30); return o != 0 ? __vector_len(o) : 0; }
 
-  public static void startMonster(FlatBufferBuilder builder) { builder.startObject(13); }
+  public static void startMonster(FlatBufferBuilder builder) { builder.startObject(14); }
   public static void addPos(FlatBufferBuilder builder, int posOffset) { builder.addStruct(0, posOffset, 0); }
   public static void addMana(FlatBufferBuilder builder, short mana) { builder.addShort(1, mana, 150); }
   public static void addHp(FlatBufferBuilder builder, short hp) { builder.addShort(2, hp, 100); }
@@ -49,6 +51,8 @@ public class Monster extends Table {
   public static void addTestarrayoftables(FlatBufferBuilder builder, int testarrayoftablesOffset) { builder.addOffset(11, testarrayoftablesOffset, 0); }
   public static void startTestarrayoftablesVector(FlatBufferBuilder builder, int numElems) { builder.startVector(4, numElems); }
   public static void addEnemy(FlatBufferBuilder builder, int enemyOffset) { builder.addOffset(12, enemyOffset, 0); }
+  public static void addTestnestedflatbuffer(FlatBufferBuilder builder, int testnestedflatbufferOffset) { builder.addOffset(13, testnestedflatbufferOffset, 0); }
+  public static void startTestnestedflatbufferVector(FlatBufferBuilder builder, int numElems) { builder.startVector(1, numElems); }
   public static int endMonster(FlatBufferBuilder builder) { return builder.endObject(); }
 };
 

tests/monster_test.fbs

@@ -32,6 +32,7 @@ table Monster {
   enemy:Monster (id:12);
   test:Any (id: 8);
   test4:[Test] (id: 9);
+  testnestedflatbuffer:[ubyte] (id:13, nested_flatbuffer: "Monster");
 }
 
 root_type Monster;

tests/monster_test_generated.h

@@ -93,6 +93,8 @@ struct Monster : private flatbuffers::Table {
   /// an example documentation comment: this will end up in the generated code multiline too
   const flatbuffers::Vector<flatbuffers::Offset<Monster>> *testarrayoftables() const { return GetPointer<const flatbuffers::Vector<flatbuffers::Offset<Monster>> *>(26); }
   const Monster *enemy() const { return GetPointer<const Monster *>(28); }
+  const flatbuffers::Vector<uint8_t> *testnestedflatbuffer() const { return GetPointer<const flatbuffers::Vector<uint8_t> *>(30); }
+  const Monster *testnestedflatbuffer_nested_root() { return flatbuffers::GetRoot<Monster>(testnestedflatbuffer()->Data()); }
   bool Verify(const flatbuffers::Verifier &verifier) const {
     return VerifyTable(verifier) &&
            VerifyField<Vec3>(verifier, 4 /* pos */) &&
@@ -115,7 +117,9 @@ struct Monster : private flatbuffers::Table {
            verifier.Verify(testarrayoftables()) &&
            verifier.VerifyVectorOfTables(testarrayoftables()) &&
            VerifyField<flatbuffers::uoffset_t>(verifier, 28 /* enemy */) &&
-           verifier.VerifyTable(enemy());
+           verifier.VerifyTable(enemy()) &&
+           VerifyField<flatbuffers::uoffset_t>(verifier, 30 /* testnestedflatbuffer */) &&
+           verifier.Verify(testnestedflatbuffer());
   }
 };
 
@@ -134,9 +138,10 @@ struct MonsterBuilder {
   void add_testarrayofstring(flatbuffers::Offset<flatbuffers::Vector<flatbuffers::Offset<flatbuffers::String>>> testarrayofstring) { fbb_.AddOffset(24, testarrayofstring); }
   void add_testarrayoftables(flatbuffers::Offset<flatbuffers::Vector<flatbuffers::Offset<Monster>>> testarrayoftables) { fbb_.AddOffset(26, testarrayoftables); }
   void add_enemy(flatbuffers::Offset<Monster> enemy) { fbb_.AddOffset(28, enemy); }
+  void add_testnestedflatbuffer(flatbuffers::Offset<flatbuffers::Vector<uint8_t>> testnestedflatbuffer) { fbb_.AddOffset(30, testnestedflatbuffer); }
   MonsterBuilder(flatbuffers::FlatBufferBuilder &_fbb) : fbb_(_fbb) { start_ = fbb_.StartTable(); }
   MonsterBuilder &operator=(const MonsterBuilder &);
-  flatbuffers::Offset<Monster> Finish() { return flatbuffers::Offset<Monster>(fbb_.EndTable(start_, 13)); }
+  flatbuffers::Offset<Monster> Finish() { return flatbuffers::Offset<Monster>(fbb_.EndTable(start_, 14)); }
 };
 
 inline flatbuffers::Offset<Monster> CreateMonster(flatbuffers::FlatBufferBuilder &_fbb,
@@ -151,8 +156,10 @@ inline flatbuffers::Offset<Monster> CreateMonster(flatbuffers::FlatBufferBuilder
    flatbuffers::Offset<flatbuffers::Vector<const Test *>> test4 = 0,
    flatbuffers::Offset<flatbuffers::Vector<flatbuffers::Offset<flatbuffers::String>>> testarrayofstring = 0,
    flatbuffers::Offset<flatbuffers::Vector<flatbuffers::Offset<Monster>>> testarrayoftables = 0,
-   flatbuffers::Offset<Monster> enemy = 0) {
+   flatbuffers::Offset<Monster> enemy = 0,
+   flatbuffers::Offset<flatbuffers::Vector<uint8_t>> testnestedflatbuffer = 0) {
   MonsterBuilder builder_(_fbb);
+  builder_.add_testnestedflatbuffer(testnestedflatbuffer);
   builder_.add_enemy(enemy);
   builder_.add_testarrayoftables(testarrayoftables);
   builder_.add_testarrayofstring(testarrayofstring);