Support for booleans in the Java/C# API

Change-Id: I72e92183a7b5f4145ea51fcec29257dc9553a461

.gitignore

@@ -34,6 +34,7 @@ flatsamplebinary
 flatsampletext
 snapshot.sh
 tests/go_gen
+tests/monsterdata_java_wire.mon
 CMakeLists.txt.user
 CMakeScripts/**
 build/Xcode/FlatBuffers.xcodeproj/project.xcworkspace/**

include/flatbuffers/idl.h

@@ -35,7 +35,7 @@ namespace flatbuffers {
 #define FLATBUFFERS_GEN_TYPES_SCALAR(TD) \
   TD(NONE,   "",       uint8_t,  byte,   byte,    byte) \
   TD(UTYPE,  "",       uint8_t,  byte,   byte,    byte) /* begin scalar/int */ \
-  TD(BOOL,   "bool",   uint8_t,  byte,   byte,    byte) \
+  TD(BOOL,   "bool",   uint8_t,  boolean,byte,    bool) \
   TD(CHAR,   "byte",   int8_t,   byte,   int8,    sbyte) \
   TD(UCHAR,  "ubyte",  uint8_t,  byte,   byte,    byte) \
   TD(SHORT,  "short",  int16_t,  short,  int16,   short) \

java/com/google/flatbuffers/FlatBufferBuilder.java

@@ -102,21 +102,23 @@ public class FlatBufferBuilder {
 
     // Add a scalar to the buffer, backwards from the current location.
     // Doesn't align nor check for space.
+    public void putBoolean(boolean x) { bb.put      (space -= 1, (byte)(x ? 1 : 0)); }
     public void putByte   (byte    x) { bb.put      (space -= 1, x); }
     public void putShort  (short   x) { bb.putShort (space -= 2, x); }
     public void putInt    (int     x) { bb.putInt   (space -= 4, x); }
     public void putLong   (long    x) { bb.putLong  (space -= 8, x); }
     public void putFloat  (float   x) { bb.putFloat (space -= 4, x); }
-    public void putDouble(double x) { bb.putDouble(space -= 8, x); }
+    public void putDouble (double  x) { bb.putDouble(space -= 8, x); }
 
     // Adds a scalar to the buffer, properly aligned, and the buffer grown
     // if needed.
+    public void addBoolean(boolean x) { prep(1, 0); putBoolean(x); }
     public void addByte   (byte    x) { prep(1, 0); putByte   (x); }
     public void addShort  (short   x) { prep(2, 0); putShort  (x); }
     public void addInt    (int     x) { prep(4, 0); putInt    (x); }
     public void addLong   (long    x) { prep(8, 0); putLong   (x); }
     public void addFloat  (float   x) { prep(4, 0); putFloat  (x); }
-    public void addDouble(double x) { prep(8, 0); putDouble(x); }
+    public void addDouble (double  x) { prep(8, 0); putDouble (x); }
 
     // Adds on offset, relative to where it will be written.
     public void addOffset(int off) {
@@ -169,13 +171,14 @@ public class FlatBufferBuilder {
     }
 
     // Add a scalar to a table at `o` into its vtable, with value `x` and default `d`
+    public void addBoolean(int o, boolean x, boolean d) { if(x != d) { addBoolean(x); slot(o); } }
     public void addByte   (int o, byte    x, int     d) { if(x != d) { addByte   (x); slot(o); } }
     public void addShort  (int o, short   x, int     d) { if(x != d) { addShort  (x); slot(o); } }
     public void addInt    (int o, int     x, int     d) { if(x != d) { addInt    (x); slot(o); } }
     public void addLong   (int o, long    x, long    d) { if(x != d) { addLong   (x); slot(o); } }
     public void addFloat  (int o, float   x, double  d) { if(x != d) { addFloat  (x); slot(o); } }
-    public void addDouble(int o, double x, double d) { if(x != d) { addDouble(x); slot(o); } }
-    public void addOffset(int o, int    x, int    d) { if(x != d) { addOffset(x); slot(o); } }
+    public void addDouble (int o, double  x, double  d) { if(x != d) { addDouble (x); slot(o); } }
+    public void addOffset (int o, int     x, int     d) { if(x != d) { addOffset (x); slot(o); } }
 
     // Structs are stored inline, so nothing additional is being added. `d` is always 0.
     public void addStruct(int voffset, int x, int d) {

net/FlatBuffers/FlatBufferBuilder.cs

@@ -105,6 +105,11 @@ namespace FlatBuffers
             Pad(alignSize);
         }
 
+        public void PutBool(bool x)
+        {
+          _bb.PutByte(_space -= sizeof(byte), (byte)(x ? 1 : 0));
+        }
+
         public void PutSbyte(sbyte x)
         {
           _bb.PutSbyte(_space -= sizeof(sbyte), x);
@@ -157,6 +162,7 @@ namespace FlatBuffers
 
         // Adds a scalar to the buffer, properly aligned, and the buffer grown
         // if needed.
+        public void AddBool(bool x) { Prep(sizeof(byte), 0); PutBool(x); }
         public void AddSbyte(sbyte x) { Prep(sizeof(sbyte), 0); PutSbyte(x); }
         public void AddByte(byte x) { Prep(sizeof(byte), 0); PutByte(x); }
         public void AddShort(short x) { Prep(sizeof(short), 0); PutShort(x); }
@@ -231,6 +237,7 @@ namespace FlatBuffers
         }
 
         // Add a scalar to a table at `o` into its vtable, with value `x` and default `d`
+        public void AddBool(int o, bool x, bool d) { if (x != d) { AddBool(x); Slot(o); } }
         public void AddSbyte(int o, sbyte x, sbyte d) { if (x != d) { AddSbyte(x); Slot(o); } }
         public void AddByte(int o, byte x, byte d) { if (x != d) { AddByte(x); Slot(o); } }
         public void AddShort(int o, short x, int d) { if (x != d) { AddShort(x); Slot(o); } }

src/idl_gen_general.cpp

@@ -216,11 +216,15 @@ static std::string GenGetter(const LanguageParameters &lang,
     case BASE_TYPE_STRUCT: return "__struct";
     case BASE_TYPE_UNION:  return "__union";
     case BASE_TYPE_VECTOR: return GenGetter(lang, type.VectorType());
-    default:
-      return "bb." + FunctionStart(lang, 'G') + "et" +
-        (GenTypeBasic(lang, type) != "byte"
-          ? MakeCamel(GenTypeGet(lang, type))
-          : "");
+    default: {
+      std::string getter = "bb." + FunctionStart(lang, 'G') + "et";
+      if (type.base_type == BASE_TYPE_BOOL) {
+        getter = "0!=" + getter;
+      } else if (GenTypeBasic(lang, type) != "byte") {
+        getter += MakeCamel(GenTypeGet(lang, type));
+      }
+      return getter;
+    }
   }
 }
 
@@ -364,7 +368,10 @@ static void GenStruct(const LanguageParameters &lang, const Parser &parser,
         code += "(bb_pos + " + NumToString(field.value.offset) + ")";
       } else {
         code += offset_prefix + getter;
-        code += "(o + bb_pos) : " + default_cast + field.value.constant;
+        code += "(o + bb_pos) : " + default_cast;
+        code += field.value.type.base_type == BASE_TYPE_BOOL
+                ? (field.value.constant == "0" ? "false" : "true")
+                : field.value.constant;
       }
     } else {
       switch (field.value.type.base_type) {
@@ -524,7 +531,12 @@ static void GenStruct(const LanguageParameters &lang, const Parser &parser,
       code += " " + argname + ") { builder." + FunctionStart(lang, 'A') + "dd";
       code += GenMethod(lang, field.value.type) + "(";
       code += NumToString(it - struct_def.fields.vec.begin()) + ", ";
-      code += argname + ", " + field.value.constant;
+      code += argname + ", ";
+      if (field.value.type.base_type == BASE_TYPE_BOOL) {
+        code += field.value.constant == "0" ? "false" : "true";
+      } else {
+        code += field.value.constant;
+      }
       code += "); }\n";
       if (field.value.type.base_type == BASE_TYPE_VECTOR) {
         auto vector_type = field.value.type.VectorType();

tests/FlatBuffers.Test/FlatBuffersExampleTests.cs

@@ -76,6 +76,7 @@ namespace FlatBuffers.Test
             Monster.AddTest(fbb, mon2);
             Monster.AddTest4(fbb, test4);
             Monster.AddTestarrayofstring(fbb, testArrayOfString);
+            Monster.AddTestbool(fbb, false);
             var mon = Monster.EndMonster(fbb);
 
             fbb.Finish(mon);
@@ -134,6 +135,8 @@ namespace FlatBuffers.Test
             Assert.AreEqual(2, monster.TestarrayofstringLength());
             Assert.AreEqual("test1", monster.Testarrayofstring(0));
             Assert.AreEqual("test2", monster.Testarrayofstring(1));
+
+            Assert.AreEqual(false, monster.Testbool());
         }
 
         public void CanReadCppGeneratedWireFile()

tests/JavaTest.java

@@ -80,6 +80,7 @@ class JavaTest {
         Monster.addTest(fbb, mon2);
         Monster.addTest4(fbb, test4);
         Monster.addTestarrayofstring(fbb, testArrayOfString);
+        Monster.addTestbool(fbb, false);
         int mon = Monster.endMonster(fbb);
 
         Monster.finishMonsterBuffer(fbb, mon);
@@ -166,6 +167,8 @@ class JavaTest {
         TestEq(monster.testarrayofstringLength(), 2);
         TestEq(monster.testarrayofstring(0),"test1");
         TestEq(monster.testarrayofstring(1),"test2");
+
+        TestEq(monster.testbool(), false);
     }
 
     static <T> void TestEq(T a, T b) {

tests/MyGame/Example/Monster.cs

@@ -36,8 +36,9 @@ public class Monster : Table {
   public int TestnestedflatbufferLength() { int o = __offset(30); return o != 0 ? __vector_len(o) : 0; }
   public Stat Testempty() { return Testempty(new Stat()); }
   public Stat Testempty(Stat obj) { int o = __offset(32); return o != 0 ? obj.__init(__indirect(o + bb_pos), bb) : null; }
+  public bool Testbool() { int o = __offset(34); return o != 0 ? 0!=bb.Get(o + bb_pos) : (bool)false; }
 
-  public static void StartMonster(FlatBufferBuilder builder) { builder.StartObject(15); }
+  public static void StartMonster(FlatBufferBuilder builder) { builder.StartObject(16); }
   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); }
@@ -61,6 +62,7 @@ public class Monster : Table {
   public static int CreateTestnestedflatbufferVector(FlatBufferBuilder builder, byte[] data) { builder.StartVector(1, data.Length, 1); for (int i = data.Length - 1; i >= 0; i--) builder.AddByte(data[i]); return builder.EndVector(); }
   public static void StartTestnestedflatbufferVector(FlatBufferBuilder builder, int numElems) { builder.StartVector(1, numElems, 1); }
   public static void AddTestempty(FlatBufferBuilder builder, int testemptyOffset) { builder.AddOffset(14, testemptyOffset, 0); }
+  public static void AddTestbool(FlatBufferBuilder builder, bool testbool) { builder.AddBool(15, testbool, false); }
   public static int EndMonster(FlatBufferBuilder builder) {
     int o = builder.EndObject();
     builder.Required(o, 10);  // name

tests/MyGame/Example/Monster.go

@@ -207,7 +207,15 @@ func (rcv *Monster) Testempty(obj *Stat) *Stat {
 	return nil
 }
 
-func MonsterStart(builder *flatbuffers.Builder) { builder.StartObject(15) }
+func (rcv *Monster) Testbool() byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(34))
+	if o != 0 {
+		return rcv._tab.GetByte(o + rcv._tab.Pos)
+	}
+	return 0
+}
+
+func MonsterStart(builder *flatbuffers.Builder) { builder.StartObject(16) }
 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) }
@@ -232,4 +240,5 @@ func MonsterAddTestnestedflatbuffer(builder *flatbuffers.Builder, testnestedflat
 func MonsterStartTestnestedflatbufferVector(builder *flatbuffers.Builder, numElems int) flatbuffers.UOffsetT { return builder.StartVector(1, numElems, 1)
 }
 func MonsterAddTestempty(builder *flatbuffers.Builder, testempty flatbuffers.UOffsetT) { builder.PrependUOffsetTSlot(14, flatbuffers.UOffsetT(testempty), 0) }
+func MonsterAddTestbool(builder *flatbuffers.Builder, testbool byte) { builder.PrependByteSlot(15, testbool, 0) }
 func MonsterEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT { return builder.EndObject() }

tests/MyGame/Example/Monster.java

@@ -41,8 +41,9 @@ public class Monster extends Table {
   public ByteBuffer testnestedflatbufferAsByteBuffer() { return __vector_as_bytebuffer(30, 1); }
   public Stat testempty() { return testempty(new Stat()); }
   public Stat testempty(Stat obj) { int o = __offset(32); return o != 0 ? obj.__init(__indirect(o + bb_pos), bb) : null; }
+  public boolean testbool() { int o = __offset(34); return o != 0 ? 0!=bb.get(o + bb_pos) : false; }
 
-  public static void startMonster(FlatBufferBuilder builder) { builder.startObject(15); }
+  public static void startMonster(FlatBufferBuilder builder) { builder.startObject(16); }
   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); }
@@ -66,6 +67,7 @@ public class Monster extends Table {
   public static int createTestnestedflatbufferVector(FlatBufferBuilder builder, byte[] data) { builder.startVector(1, data.length, 1); for (int i = data.length - 1; i >= 0; i--) builder.addByte(data[i]); return builder.endVector(); }
   public static void startTestnestedflatbufferVector(FlatBufferBuilder builder, int numElems) { builder.startVector(1, numElems, 1); }
   public static void addTestempty(FlatBufferBuilder builder, int testemptyOffset) { builder.addOffset(14, testemptyOffset, 0); }
+  public static void addTestbool(FlatBufferBuilder builder, boolean testbool) { builder.addBoolean(15, testbool, false); }
   public static int endMonster(FlatBufferBuilder builder) {
     int o = builder.endObject();
     builder.required(o, 10);  // name

tests/monster_test.fbs

@@ -43,6 +43,7 @@ table Monster {
   test4:[Test] (id: 9);
   testnestedflatbuffer:[ubyte] (id:13, nested_flatbuffer: "Monster");
   testempty:Stat (id:14);
+  testbool:bool (id:15);
 }
 
 root_type Monster;

tests/monster_test_generated.h

@@ -140,6 +140,7 @@ struct Monster FLATBUFFERS_FINAL_CLASS : private flatbuffers::Table {
   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()); }
   const Stat *testempty() const { return GetPointer<const Stat *>(32); }
+  uint8_t testbool() const { return GetField<uint8_t>(34, 0); }
   bool Verify(flatbuffers::Verifier &verifier) const {
     return VerifyTableStart(verifier) &&
            VerifyField<Vec3>(verifier, 4 /* pos */) &&
@@ -167,6 +168,7 @@ struct Monster FLATBUFFERS_FINAL_CLASS : private flatbuffers::Table {
            verifier.Verify(testnestedflatbuffer()) &&
            VerifyField<flatbuffers::uoffset_t>(verifier, 32 /* testempty */) &&
            verifier.VerifyTable(testempty()) &&
+           VerifyField<uint8_t>(verifier, 34 /* testbool */) &&
            verifier.EndTable();
   }
 };
@@ -188,10 +190,11 @@ struct MonsterBuilder {
   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); }
   void add_testempty(flatbuffers::Offset<Stat> testempty) { fbb_.AddOffset(32, testempty); }
+  void add_testbool(uint8_t testbool) { fbb_.AddElement<uint8_t>(34, testbool, 0); }
   MonsterBuilder(flatbuffers::FlatBufferBuilder &_fbb) : fbb_(_fbb) { start_ = fbb_.StartTable(); }
   MonsterBuilder &operator=(const MonsterBuilder &);
   flatbuffers::Offset<Monster> Finish() {
-    auto o = flatbuffers::Offset<Monster>(fbb_.EndTable(start_, 15));
+    auto o = flatbuffers::Offset<Monster>(fbb_.EndTable(start_, 16));
     fbb_.Required(o, 10);  // name
     return o;
   }
@@ -211,7 +214,8 @@ inline flatbuffers::Offset<Monster> CreateMonster(flatbuffers::FlatBufferBuilder
    flatbuffers::Offset<flatbuffers::Vector<flatbuffers::Offset<Monster>>> testarrayoftables = 0,
    flatbuffers::Offset<Monster> enemy = 0,
    flatbuffers::Offset<flatbuffers::Vector<uint8_t>> testnestedflatbuffer = 0,
-   flatbuffers::Offset<Stat> testempty = 0) {
+   flatbuffers::Offset<Stat> testempty = 0,
+   uint8_t testbool = 0) {
   MonsterBuilder builder_(_fbb);
   builder_.add_testempty(testempty);
   builder_.add_testnestedflatbuffer(testnestedflatbuffer);
@@ -225,6 +229,7 @@ inline flatbuffers::Offset<Monster> CreateMonster(flatbuffers::FlatBufferBuilder
   builder_.add_pos(pos);
   builder_.add_hp(hp);
   builder_.add_mana(mana);
+  builder_.add_testbool(testbool);
   builder_.add_test_type(test_type);
   builder_.add_color(color);
   return builder_.Finish();