Summary:
These `constexpr` template variables make it really easy to test for bridging conversion to/from the specified types. The unit tests for this actually uncovered a bug with incompatible casts from lvalue references that was fixed in this diff as well.
Changelog:
Internal
Reviewed By: christophpurrer
Differential Revision: D35105398
fbshipit-source-id: 6e5f16e44ba99b296284970bf32c1f2f47201391
Summary:
This adds `bridging::callFromJs` that can call class instance methods with JSI arguments and will automagically convert types to the types expected by the method, or otherwise will fail to compile. The same type conversion back to JSI applies as well for the return value, if there is one.
This will allow C++ TurboModules to more easily define their interface in terms of C++ types instead of having to interact with JSI directly for everything, though it remains possibles for JSI values to pass through if that's what a given method wants.
Changelog:
Internal
Reviewed By: christophpurrer
Differential Revision: D34780511
fbshipit-source-id: 1f9caadeefa6d4023f679e95f3decc64d156b3f0
Summary:
This adds `bridging::toJs` and `bridging::fromJs` functions that will safely cast to and from JSI values and C++ types. This is extensible by specializing `Bridging<T>` with `toJs` and/or `fromJs` static methods. There are specializations for most common C++ and JSI types along with tests for those.
C++ functions and lambdas will effortlessly bridge into JS, and bridging JS functions back into C++ require you to choose `SyncCallback<R(Args...)>` or `AsyncCallback<Args...>` types. The sync version allows for having a return value and is strictly not movable to prevent accidentally moving onto another thread. The async version will move its args onto the JS thread and safely call the callback there, but hence always has a `void` return value.
For promises, you can construct a `AsyncPromise<T>` that has `resolve` and `reject` methods that can be called from any thread, and will bridge into JS as a regular `Promise`.
Changelog:
[General][Added] - New bridging API for JSI <-> C++
Reviewed By: christophpurrer
Differential Revision: D34607143
fbshipit-source-id: d832ac24cf84b4c1672a7b544d82e324d5fca3ef
Scott Kyle