Summary:
The previous version of a set of default values of `ShadowView`'s fields has a bug:
```
ComponentName componentName = "";
```
Initalizing `char const *` with a string literal in .h file makes the default constructor of the object produces different values across binary units (because a pointer to empty string can be defined differently). Now it's just a null pointer.
Reviewed By: sammy-SC
Differential Revision: D15911452
fbshipit-source-id: 16bcfb5f78ea802c0833135c486e3fbb8b7acaa6
Summary:
`MountingTransaction` encapsulates all artifacts of `ShadowTree` commit, particularly list of mutations and meta-data.
We will rely on this heavily in the coming diffs.
Reviewed By: JoshuaGross
Differential Revision: D15021795
fbshipit-source-id: 811da7afd7b929a34a81aa66566193d46bbc34f8
Summary:
Trivial.
Now we can print actual list of mutations in case of some failure in the diffing algorithm.
Reviewed By: mdvacca
Differential Revision: D14715079
fbshipit-source-id: d0af7c756287643892d7120c199bc8028a6b3431
Summary:
Accidentally I noticed that the signature of Folly's hash_combine is different from boost's one.
The Folly's one is:
`size_t hash_combine(const T& t, const Ts&... ts)`, so the first argument is immutable and the method returns the result normally.
It means that all hashes that we compute in Fabric using `hash_combine` were `0`.
So I fixed it.
I have no idea why this difference exists, but some modern papers suggest that folly's variant has good chances to be standardized.
E.g.: http://open-std.org/JTC1/SC22/WG21/docs/papers/2017/p0814r0.pdf
Technically, it should improve performance, but I doubt that it can be more than 1-2 ms per screen TTI.
Reviewed By: JoshuaGross
Differential Revision: D14430380
fbshipit-source-id: 97da999ee5780b940bb789bc3eb5bf9f89c194ca
Summary: The hope is that it will remove many unnececery allocations improving overal perfromance.
Reviewed By: mdvacca
Differential Revision: D14249198
fbshipit-source-id: f0442b3919ccead0582a3190dea0e33d517d85f6
Summary:
I am not sure why it compiled before, it clearly should not, IMO. The `const` types (and references!) are not allowed inside `std::vector` because they are not assignable.
Some experiments that I did caused compilation errors here, so I am changing that to be actually correct.
Reviewed By: JoshuaGross
Differential Revision: D14249199
fbshipit-source-id: 07a22ef13f5de9dfc7ab307493419e6006994bc2
Summary:
This pull request removes the designated initializers in `react/mounting/**` and `react/events/**` to improve portability.
A destructor was also defined for `ShadowView` to fix this error:
```
ShadowViewMutation.cpp:14: error: undefined reference to 'facebook::react::ShadowView::~ShadowView()'
ShadowViewMutation.cpp:24: error: undefined reference to 'facebook::react::ShadowView::~ShadowView()'
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
```
[General] [Changed] - Fabric: Remove designated initializers in Events and Mounting
Pull Request resolved: https://github.com/facebook/react-native/pull/23441
Differential Revision: D14298890
Pulled By: shergin
fbshipit-source-id: f5d8fc6e1f5968b94e8bb3ca0c3f0e81cf892f83
Summary:
In React Native there are several use cases where React State is not the only input that affects the component tree. E.g., in case of a <Modal> component, the screen size directly affects the layout of components inside modal; in the case of uncontrolled <TextInput> component, the text inside the input affects the layout of the surrounding components. `State` is a special (legit!) workaround for all those similar cases. Native part of React Native maintains a special shared object between all nodes of the same family and use that during cloning and commits.
See coming commits to know how to use that.
In the near future State will fully replace LocalData concept but for simplicity they both exist for now.
Reviewed By: mdvacca
Differential Revision: D14217184
fbshipit-source-id: 6e018c5b68208d662462013bce0f4e2733d2f673
Summary: That's bummer that we have to do it, but it's actually reasonable. Files in `core` and `events` depend on each other creating circular dependencies and other similar hard problem.
Reviewed By: mdvacca
Differential Revision: D14195022
fbshipit-source-id: 96a44ae28631cc9ccd7d7de72a94526f9e0dd12a
Summary: Use a folly LRU implementation to cache results of ParagraphShadowNode::measure, which Yoga asks for repeatedly. Should have a substantial speed improvement on Android and iOS, or at least that's the dream.
Reviewed By: mdvacca
Differential Revision: D13795808
fbshipit-source-id: 5716af0fe0517a72716e48113c8125bb788735d7
Summary: Trivial. We need this for future use as part of AttributedString's hash.
Reviewed By: mdvacca
Differential Revision: D13205231
fbshipit-source-id: 14a3decae72741030284a30abdb936616bafb3fe
Summary:
ShadowView, ShadowViewMutation, and Differentiator were decoupled to separate module.
That enables us to use ShadowView more widely without facing a circular dependency problem.
Reviewed By: mdvacca
Differential Revision: D13205229
fbshipit-source-id: 7373864bf153a7813c2f97edb263a41454ce0b88
Valentin Shergin
empyrical
Joshua Gross