* [C++] Use strong enum type for vectors when scoped-enums is on.
These changes only apply when scoped-enums is on, and thus only
the C++17 tests show diffs.
This may break users who use 1) use scoped-enums and 2) use
vectors of enums. However, it seems that this change should
have been made originally when scoped-enums were added.
Fixes#5285
* [C++] Put strong enum change also behind C++17 flag.
It actually only needs C++11 technically, but this is being done
to avoid breaking any existing users.
Tests were rerun, but produced no additional diffs, as expected.
* [C++] Forgot one location in which C++17 guard needs to go.
This commit produces no additional diffs in generated code.
* Use g_only_fixed_enums instead of scoped_enums.
* Include flattests_cpp17 in unit tests when C++17 build is enabled.
* [C++17] Generate generic table factory function.
1. For each table, generate a convenient free-standing factory
function that allows creating the table in a generic way by
specifying only the type. This is the first change in a series
of changes to make Flatbuffers generated C++ code more friendly
to code bases that make use of C++ template metaprogramming
techniques to manage the serialization process. Example:
Before :(
// The name of the Flatbuffers type (and namespace) must
// be hard-coded when writing the factory function.
auto monster = MyGame::Example::CreateMonster(fbb, ...);
After :)
using type_to_create = MyGame::Example::Monster;
// No namespace needed on CreateByTagType.
auto monster = CreateByTagType((type_to_create*)nullptr,
fbb, ...);
This feature requires building with C++14 or greater, and thus
it is guarded behind --cpp-std >= c++17 in the flatbuffers C++
generator.
2. Fix a CMake bug to include C++17 unit tests in test suite.
* [C++17] Replace standalone variadic factory function with type_traits.
Add a `type_traits` to each table class. This `type_traits` can be
populated with various compile-time info about the table. Initially,
we have the Create* function and type, but is extensible in the future.
* Remove empty line and fix stale comments.
* Rename type_traits to Traits and move fwd declaration.
* Fix parameter evaluation order issue and use lambda for scope.
* Add Builder and Table typedefs
This gives us a way to use templates to go from a builder to a table
and back again without having to pass both types in.
* Fix tests/cpp17/generated_cpp17/monster_test_generated.h
* Add flatc '--cpp_std' switch and sandbox for C++17 code generator
- Added 'flac --cpp_std legacy' for compatibility with old compilers (VS2010);
- Added experimental switch 'flac --cpp_std c++17' for future development;
- Added C++17 sandbox test_cpp17.cpp;
- C++ code generator generates enums with explicit underlying type to avoid problems with the forward and backward schema compatibility;
- Adjusted CMakeLists.txt, CI and generate code scripts to support of introduced '--cpp_std';
* Fix --cpp_std values: c++0x, c++11, c++17
* Add 'cpp::CppStandard' enum
* Add testing engine into test_cpp17
* Rebase to upstream/master
* Set default '--cpp-std C++0x'
* Fix code generation (--cpp_std C++11) in CMakeLists.txt
- Fix dependency declaration of grpctest target
* Revert --cpp-std for the tests from explicit C++11 to flatc default value (C++0x)
