Squashed 'third_party/flatbuffers/' content from commit acc9990ab
Change-Id: I48550d40d78fea996ebe74e9723a5d1f910de491
git-subtree-dir: third_party/flatbuffers
git-subtree-split: acc9990abd2206491480291b0f85f925110102ea
diff --git a/samples/sample_binary.cpp b/samples/sample_binary.cpp
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+/*
+ * Copyright 2015 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.
+ */
+
+#include "monster_generated.h" // Already includes "flatbuffers/flatbuffers.h".
+
+using namespace MyGame::Sample;
+
+// Example how to use FlatBuffers to create and read binary buffers.
+
+int main(int /*argc*/, const char * /*argv*/ []) {
+ // Build up a serialized buffer algorithmically:
+ flatbuffers::FlatBufferBuilder builder;
+
+ // First, lets serialize some weapons for the Monster: A 'sword' and an 'axe'.
+ auto weapon_one_name = builder.CreateString("Sword");
+ short weapon_one_damage = 3;
+
+ auto weapon_two_name = builder.CreateString("Axe");
+ short weapon_two_damage = 5;
+
+ // Use the `CreateWeapon` shortcut to create Weapons with all fields set.
+ auto sword = CreateWeapon(builder, weapon_one_name, weapon_one_damage);
+ auto axe = CreateWeapon(builder, weapon_two_name, weapon_two_damage);
+
+ // Create a FlatBuffer's `vector` from the `std::vector`.
+ std::vector<flatbuffers::Offset<Weapon>> weapons_vector;
+ weapons_vector.push_back(sword);
+ weapons_vector.push_back(axe);
+ auto weapons = builder.CreateVector(weapons_vector);
+
+ // Second, serialize the rest of the objects needed by the Monster.
+ auto position = Vec3(1.0f, 2.0f, 3.0f);
+
+ auto name = builder.CreateString("MyMonster");
+
+ unsigned char inv_data[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+ auto inventory = builder.CreateVector(inv_data, 10);
+
+ // Shortcut for creating monster with all fields set:
+ auto orc = CreateMonster(builder, &position, 150, 80, name, inventory,
+ Color_Red, weapons, Equipment_Weapon, axe.Union());
+
+ builder.Finish(orc); // Serialize the root of the object.
+
+ // We now have a FlatBuffer we can store on disk or send over a network.
+
+ // ** file/network code goes here :) **
+ // access builder.GetBufferPointer() for builder.GetSize() bytes
+
+ // Instead, we're going to access it right away (as if we just received it).
+
+ // Get access to the root:
+ auto monster = GetMonster(builder.GetBufferPointer());
+
+ // Get and test some scalar types from the FlatBuffer.
+ assert(monster->hp() == 80);
+ assert(monster->mana() == 150); // default
+ assert(monster->name()->str() == "MyMonster");
+
+ // Get and test a field of the FlatBuffer's `struct`.
+ auto pos = monster->pos();
+ assert(pos);
+ assert(pos->z() == 3.0f);
+ (void)pos;
+
+ // Get a test an element from the `inventory` FlatBuffer's `vector`.
+ auto inv = monster->inventory();
+ assert(inv);
+ assert(inv->Get(9) == 9);
+ (void)inv;
+
+ // Get and test the `weapons` FlatBuffers's `vector`.
+ std::string expected_weapon_names[] = { "Sword", "Axe" };
+ short expected_weapon_damages[] = { 3, 5 };
+ auto weps = monster->weapons();
+ for (unsigned int i = 0; i < weps->size(); i++) {
+ assert(weps->Get(i)->name()->str() == expected_weapon_names[i]);
+ assert(weps->Get(i)->damage() == expected_weapon_damages[i]);
+ }
+ (void)expected_weapon_names;
+ (void)expected_weapon_damages;
+
+ // Get and test the `Equipment` union (`equipped` field).
+ assert(monster->equipped_type() == Equipment_Weapon);
+ auto equipped = static_cast<const Weapon *>(monster->equipped());
+ assert(equipped->name()->str() == "Axe");
+ assert(equipped->damage() == 5);
+ (void)equipped;
+
+ printf("The FlatBuffer was successfully created and verified!\n");
+}