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Add new c++ helpers to ease usage of size prefixed FlatBuffers (#4626)

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It was missing some helpers when we choose to use
size prefixed FlatBuffers.

* Add general helper : GetPrefixedSize
* Add generated helpers :
 * GetSizePrefixedXXX
 * VerfifySizePrefixedXXXBuffer
 * FinishSizePrefixedXXXBuffer
This commit is contained in:
desqaz
2018-02-22 18:19:08 +01:00
committed by Wouter van Oortmerssen
parent 19c81b11b3
commit 132e6a8220
8 changed files with 86 additions and 14 deletions
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8
tests/test.cpp
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@@ -514,16 +514,16 @@ void ObjectFlatBuffersTest(uint8_t *flatbuf) {
void SizePrefixedTest() {
// Create size prefixed buffer.
flatbuffers::FlatBufferBuilder fbb;
fbb.FinishSizePrefixed(
FinishSizePrefixedMonsterBuffer(
fbb,
CreateMonster(fbb, 0, 200, 300, fbb.CreateString("bob")));
// Verify it.
flatbuffers::Verifier verifier(fbb.GetBufferPointer(), fbb.GetSize());
TEST_EQ(verifier.VerifySizePrefixedBuffer<Monster>(nullptr), true);
TEST_EQ(VerifySizePrefixedMonsterBuffer(verifier), true);
// Access it.
auto m = flatbuffers::GetSizePrefixedRoot<MyGame::Example::Monster>(
fbb.GetBufferPointer());
auto m = GetSizePrefixedMonster(fbb.GetBufferPointer());
TEST_EQ(m->mana(), 200);
TEST_EQ(m->hp(), 300);
TEST_EQ_STR(m->name()->c_str(), "bob");