Initial commit of the FlatBuffers code.

Change-Id: I4c9f0f722490b374257adb3fec63e44ae93da920
Tested: using VS2010 / Xcode / gcc on Linux.

tests/JavaTest.java

@@ -0,0 +1,145 @@
+/*
+ * Copyright 2014 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.io.*;
+import java.nio.ByteBuffer;
+import MyGame.Example.*;
+import flatbuffers.FlatBufferBuilder;
+
+class JavaTest {
+    public static void main(String[] args) {
+
+        // First, let's test reading a FlatBuffer generated by C++ code:
+        // This file was generated from monsterdata_test.json
+
+        byte[] data = null;
+        File file = new File("monsterdata_test_wire.bin");
+        RandomAccessFile f = null;
+        try {
+            f = new RandomAccessFile(file, "r");
+            data = new byte[(int)f.length()];
+            f.readFully(data);
+            f.close();
+        } catch(java.io.IOException e) {
+            System.out.println("FlatBuffers test: couldn't read file");
+            return;
+        }
+
+        // Now test it:
+
+        ByteBuffer bb = ByteBuffer.wrap(data);
+        TestBuffer(bb, 0);
+
+        // Second, let's create a FlatBuffer from scratch in Java, and test it also.
+        // We set up the same values as monsterdata.json:
+
+        FlatBufferBuilder fbb = new FlatBufferBuilder(1024);
+
+        int str = fbb.createString("MyMonster");
+
+        Monster.startInventoryVector(fbb, 5);
+        for (byte i = 4; i >=0; i--) fbb.addByte(i);
+        int inv = fbb.endVector();
+
+        Monster.startMonster(fbb);
+        Monster.addHp(fbb, (short)20);
+        int mon2 = Monster.endMonster(fbb);
+
+        Monster.startTest4Vector(fbb, 2);
+        Test.createTest(fbb, (short)10, (byte)20);
+        Test.createTest(fbb, (short)30, (byte)40);
+        int test4 = fbb.endVector();
+
+        Monster.startMonster(fbb);
+        Monster.addPos(fbb, Vec3.createVec3(fbb, 1.0f, 2.0f, 3.0f, 3.0,
+                                                 (byte)4, (short)5, (byte)6));
+        Monster.addHp(fbb, (short)80);
+        Monster.addName(fbb, str);
+        Monster.addInventory(fbb, inv);
+        Monster.addTestType(fbb, (byte)1);
+        Monster.addTest(fbb, mon2);
+        Monster.addTest4(fbb, test4);
+        int mon = Monster.endMonster(fbb);
+
+        fbb.finish(mon);
+
+        // Write the result to a file for debugging purposes:
+        // Note that the binaries are not necessarily identical, since the JSON
+        // parser may serialize in a slightly different order than the above
+        // Java code. They are functionally equivalent though.
+
+        try {
+             DataOutputStream os = new DataOutputStream(new FileOutputStream(
+                                           "monsterdata_java_wire.bin"));
+             os.write(fbb.dataBuffer().array(), fbb.dataStart(), fbb.offset());
+             os.close();
+        } catch(java.io.IOException e) {
+            System.out.println("FlatBuffers test: couldn't write file");
+            return;
+        }
+
+        // Test it:
+
+        TestBuffer(fbb.dataBuffer(), fbb.dataStart());
+
+        System.out.println("FlatBuffers test: completed successfully");
+    }
+
+    static void TestBuffer(ByteBuffer bb, int start) {
+        Monster monster = Monster.getRootAsMonster(bb, start);
+
+        TestEq(monster.hp(), (short)80);
+        TestEq(monster.mana(), (short)150);  // default
+
+        TestEq(monster.name(), "MyMonster");
+        // monster.friendly() // can't access, deprecated
+
+        Vec3 pos = monster.pos();
+        TestEq(pos.x(), 1.0f);
+        TestEq(pos.y(), 2.0f);
+        TestEq(pos.z(), 3.0f);
+        TestEq(pos.test1(), 3.0);
+        TestEq(pos.test2(), (byte)4);
+        Test t = pos.test3();
+        TestEq(t.a(), (short)5);
+        TestEq(t.b(), (byte)6);
+
+        TestEq(monster.testType(), (byte)Any.Monster);
+        Monster monster2 = new Monster();
+        TestEq(monster.test(monster2) != null, true);
+        TestEq(monster2.hp(), (short)20);
+
+        TestEq(monster.inventoryLength(), 5);
+        int invsum = 0;
+        for (int i = 0; i < monster.inventoryLength(); i++)
+            invsum += monster.inventory(i);
+        TestEq(invsum, 10);
+
+        Test test_0 = monster.test4(0);
+        Test test_1 = monster.test4(1);
+        TestEq(monster.test4Length(), 2);
+        TestEq(test_0.a() + test_0.b() + test_1.a() + test_1.b(), 100);
+    }
+
+    static <T> void TestEq(T a, T b) {
+        if (!a.equals(b)) {
+            System.out.println("" + a.getClass().getName() + " " + b.getClass().getName());
+            System.out.println("FlatBuffers test FAILED: \'" + a + "\' != \'" + b + "\'");
+            assert false;
+            System.exit(1);
+        }
+    }
+}