Summary:
changelog: [internal]
You can read more about this rule on https://clang.llvm.org/extra/clang-tidy/checks/modernize-pass-by-value.html
# Isn't it wasteful to copy? Isn't reference more efficient?
This rule of thumb is no longer true since C++11 with move semantics. Let's look at some examples.
# Option one
```
class TextHolder
{
public:
TextBox(std::string const &text) : text_(text) {}
private:
std::string text_;
};
```
By using reference here, we prevent the caller from using rvalue to and avoiding copy. Regardless of what the caller passes in, copy always happens.
# Option two
```
class TextHolder
{
public:
TextBox(std::string const &text) : text_(text) {}
TextBox(std::string &&text) : text_(std::move(text)) {}
private:
std::string text_;
};
```
Here, we provide two constructors, one for const reference and one for rvalue reference. This gives the caller option to avoid copy. But now we have two constructors, which is not ideal.
# Option three (what we do in this diff)
```
class TextHolder
{
public:
TextBox(std::string text) : text_(std::move(text)) {}
private:
std::string text_;
};
```
Here, the caller has option to avoid copy and we only have single constructor.
Reviewed By: fkgozali, JoshuaGross
Differential Revision: D33276841
fbshipit-source-id: 619d5123d2e28937b22874650366629f24f20a63
Summary:
Renaming the `better` utilities to `butter`:
- to prevent claims that this library is superior to others - it really depends on use cases
- to indicate ease of use throughout the codebase, easily spread like butter
Changelog: [C++][Changed] Renaming C++ better util to butter, used by Fabric internals
Reviewed By: JoshuaGross
Differential Revision: D33242764
fbshipit-source-id: 26dc95d9597c61ce8e66708e44ed545e0fc5cff5
Summary:
changelog: [internal]
In an effort to make our codebase more approachable, I'm enabling more clang-tidy rules.
Read more about modernize-avoid-c-arrays in https://clang.llvm.org/extra/clang-tidy/checks/modernize-avoid-c-arrays.html
Reviewed By: ShikaSD
Differential Revision: D33187162
fbshipit-source-id: c6b3888f67d095274bb492a01132985ae506c0d5
Summary:
changelog: [internal]
I will be enabling more clang tidy rules in Fabric to make it easier for new contributors and standardise the codebase. \
You can read more about the rule in https://clang.llvm.org/extra/clang-tidy/checks/modernize-avoid-bind.html
Reviewed By: ShikaSD
Differential Revision: D33162192
fbshipit-source-id: b4bb332f3134c42c49559a8baf10aeb7a7fdd87f
Summary:
We have `LOCAL_SHARED_LIBRARIES` that are getting longer and are
making reviewing them on Diffs quite hard.
Having all the list of the dependency on a single line is suboptimal
and it makes hard to find duplicated entries.
I've updated the longest `LOCAL_SHARED_LIBRARIES` to be multilines and
I've sorted the entries here.
Changelog:
[Internal] [Changed] - LOCAL_SHARED_LIBRARIES
Reviewed By: ShikaSD
Differential Revision: D32695127
fbshipit-source-id: f5b381c501ddff083ef9f4baaca6c4c8c9523368
Summary:
These dynamic_casts aren't really giving us much (they have never fired once in dev! and don't run in prod anyway). They also prevent us from disabling RTTI. So, let's get rid of them.
Changelog: [Internal]
Reviewed By: philIip
Differential Revision: D31634895
fbshipit-source-id: 4a9b259837127feb324f64fa3e9e23eb1cc481a6
Summary:
Nearly all of these are identical and these compiler_flags are now centralized in rn_defs.bzl. This should have NO CHANGE on build configuration, the flags have just moved for now.
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D31631766
fbshipit-source-id: be40ebeb70ae52b7ded07ca08c4a29f10a0ed925
Summary:
For iOS, event category deduction is done from the C++ code, but the touch events are handled on Java layer in Android. This change exposes the category parameter through the `EventEmitterWrapper` called from Java, allowing to define category for events in the future.
Changelog:
[Internal] - Expose event category through JNI
Reviewed By: mdvacca
Differential Revision: D31205587
fbshipit-source-id: f2373ce18464b01ac08eb87df8f421b33d100be2
Summary:
changelog: [internal]
LayoutAnimations only animates changes inside View and Paragraph nodes. This diff extends it to any node that's ViewKind.
Reviewed By: JoshuaGross
Differential Revision: D30603138
fbshipit-source-id: 63ca1e5df420149c4ba66151e97fea419fdfe631
Summary:
changelog: [internal]
Use surfaceId type instead of raw int type in PropsParserContext
Reviewed By: RSNara
Differential Revision: D30667540
fbshipit-source-id: 2bf890b892851e785318e3566692ac72ec782b91
Summary:
Ship libjsi as a standalone dynamic library. This prevents problems
with exception handling caused by duplicate typeinfo across multiple
shared libs, and reduces bundle size by removing duplicate copies of
JSI.
Changelog: [Internal]
Reviewed By: fkgozali
Differential Revision: D30599215
fbshipit-source-id: abad1398342a5328daa825f3f684e0067cad7a96
Summary:
LLD, our new iOS linker, is an ongoing effort to migrate our old outdated ld64 linker. As part of our effort to rollout LLD to all apps, we are making sure LLD reaches parity with ld64.
Due to Identical Code Folding (ICF), LLD and ld64 handles strings differently. LLD treats each string as a separate object in memory even if the values of the strings are the same. ld64 happens to aggregate these values across files. This behavior creates a subtle difference on our codebase when we start comparing by value or by reference.
`char * ` fields from `RawPropsKey.h` are using `==` which compares by its address. Here, we cast the buffer to a string to make the comparison, while avoiding the cast if one happens to be null.
Changelog: [Internal]
Reviewed By: int3, JoshuaGross
Differential Revision: D30444176
fbshipit-source-id: 74216926803adbece05206ddd8478cc3c8e6812e
Summary:
This diff is part of a bigger effort to remove the RTTI flags.
To do so we need to remove occurrences of `dynamic_cast` and other functions that rely on runtime
type informations.
Changelog:
[Internal][Changed] - Removed extra asserts relying on dynamic_cast
Reviewed By: JoshuaGross
Differential Revision: D30483554
fbshipit-source-id: 92b31281841a92c7b43e918938248431265dd654
Summary:
Fabric core uses a lot of traits - I am reserving a few more for core usage, and also exposing a few "unreserved" traits.
It is recommended that all custom components that do use traits rely on these constants instead of hard-coding any trait values. That way, in the unlikely event that these values change in the future, it will not break components.
Changelog: [Internal]
Reviewed By: cortinico, RSNara
Differential Revision: D30401743
fbshipit-source-id: fb2e8f5cf33c94e31a0c25a89055acfc4eccf066
Summary:
See previous diffs for context. This updates all of the relevant props structs.
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D29855426
fbshipit-source-id: 30177c3380ef82ecf8f2a4321f128cfbe8a576e0
Summary:
Adding runtime type information adds greatly to the binary size, so react-native-windows builds without it. But some parts of the fabric code currently uses dynamic_cast, which means to use fabric we have to build with RTTI turned on. This PR removes the usages of dynamic_cast that are hit in release builds, which should allow react-native-windows to turn off RTTI in release builds.
Required for: https://github.com/microsoft/react-native-windows/issues/7981
One thing to note, the comment in ShadowNodeTraits indicates that core was reserving the first 16 bits. I'm adding two more. Is that ok? Should core be reserving more for future use?
## Changelog
<!-- Help reviewers and the release process by writing your own changelog entry. For an example, see:
https://github.com/facebook/react-native/wiki/Changelog
-->
[Internal] [Fixed] - Remove uses of dynamic_cast in release builds
Pull Request resolved: https://github.com/facebook/react-native/pull/31694
Test Plan:
Verified that I can build react-native-windows with Fabric in release, without RTTI.
Boot / clicked around in RNW RNTester
Reviewed By: sammy-SC
Differential Revision: D29040383
Pulled By: JoshuaGross
fbshipit-source-id: e49286e59c4ba54faf0b4de5e244dfa1f7c3f193
Summary:
Changelog: [internal]
There is a possibility of race between updating scrollview's state and virtualised list asking for layout of individual cells.
To make sure the race doesn't happen, state must be updated before dispatching onScroll event.
Android has implemented a different mechanism to tackle this issue in D28558380 (https://github.com/facebook/react-native/commit/b161241db2ef74d2e4bff36d4972f5f0312dcc44).
Reviewed By: JoshuaGross
Differential Revision: D28642737
fbshipit-source-id: 33874beac69fc5a66eeb7f459fd89cd0b00dafcf
Summary:
Changelog: [internal]
This is a mechanism that will guess event's React priority based on other events ongoing on the platform.
If an event happens within span of ContinuousStart -> ContinuousEnd and its category is unspecified, we deduce it's React priority to be default. All other events are discrete.
Special case: `onScroll`, which is always treated as "Default".
Reviewed By: JoshuaGross
Differential Revision: D28485060
fbshipit-source-id: d2eae63dbcf03271dfed97128a1590dd165a3ce2
Summary:
Changelog: [internal]
Pulling out event queue processing to its separate class. We will be adding more logic there so it makes sense to separate it for simplicity and testability purposes.
Alternative names that came to mind: `EventsProcessor`, `EventsDispatcher`.
Reviewed By: JoshuaGross
Differential Revision: D28572283
fbshipit-source-id: 1cb2459f616b9995f66da80d50c401e68002da7f
Summary:
TL;DR: simplify and delete a bunch of stuff that shouldn't be necessary in Fabric.
I discovered that this event dispatcher (and the older one this is based on) is triple-queueing: we queue events into "staging", and then post "dispatch events" to only run /on the JS thread/. Even in Fabric. Then, each of these events is emitted into C++ where they are queued /again/! This refactor eliminates one more level of queueing - instead of scheduling dispatch for the JS thread, we just emit them directly to C++ when they're received in Java.
Unfortunately, the EventDispatcher is also used to drive AsyncEventBeat in C++:
1. EventBeatManager.onBatchEventDispatched: https://fburl.com/diffusion/qf6dyhsw
In the C++ impl, it indirectly will drive the AsyncEventBeat/AsyncEventBeatV2.
2. onBatchEventDispatched is ONLY called from EventDispatcherImpl: https://fburl.com/codesearch/mxk8ifyj
3. Which is queued and only runs on the JS thread: https://fburl.com/codesearch/czvbst4u
This means the AsyncEventBeat is only ticked when the JS thread is free, and ticks will be skipped when the JS thread is occupied for long periods.
Now, in this refactor, when this class is used it will drive AsyncEventBeat on every UI tick. This is also potentially not correct. On iOS (Fabric), AsyncEventBeat is driven when the UI thread is "about to sleep".
For now I'm not going to worry about that detail - it is significant, but Fabric+Android is currently /not doing the right thing/ and it's not clear that we want to maintain iOS behavior. This is something we need to discuss further and figure out.
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D28654033
fbshipit-source-id: b3cb9b706343c8dd3c4cf84f24388908c57e2138
Summary:
Changelog: [internal]
My suggestion is to simplify event dispatching to only two options, synchronous and asynchronous.
Why?
- Fabric has only been using one queue, `AsynchronousBatched`.
- Batching happens even on `AsynchronousUnbatched`. It just batches events until JS thread starts processing them instead of waiting for the main run loop.
- It will make it easier to reason about the code in the future once we start utilising different priorities for Concurrent Mode.
Reviewed By: JoshuaGross
Differential Revision: D28603472
fbshipit-source-id: 14e3a9c15a012c550dc16a044c31d722051a2bdc
Summary:
react-native-windows runs with a more strict set of warnings as errors. This fixes a bunch of warnings being hit while compiling core react-native code as part of react-native-windows. In particular warnings about mismatched signed/unsigned comparisons, lossy conversions, and variable names that conflict with names in outer scopes (yoga has a global for `leading` and `trailing` that conflicts with some local variable names)
## Changelog
[Internal] [Fixed] - Fix various C++ warnings
Pull Request resolved: https://github.com/facebook/react-native/pull/31399
Test Plan: I've run these changes in react-native-windows. -- Shouldn't have any functionality difference.
Reviewed By: sammy-SC
Differential Revision: D28290188
Pulled By: rozele
fbshipit-source-id: 2f7cf87f58d73a3f43510ac888dbcb9ab177d134
Summary:
Changelog: [internal]
Cloning root shadow node didn't always trigger a layout because node was not dirtied. Checking if layoutConstraints are changed when cloning RootShadowNode
Reviewed By: JoshuaGross
Differential Revision: D28352238
fbshipit-source-id: 536afdeddf5d2019950ceb6664c10ee593ab5f02
Summary:
Changelog: [internal]
Prevent unnecessary copy of `RawEvent::eventTarget` which is `shared_ptr` inside `EventQueue::enqueueEvent` by passing in rvalue.
Reviewed By: JoshuaGross
Differential Revision: D28323219
fbshipit-source-id: 7f62e17df5c4264a15adf58f6142155a76de7aae
Summary:
Support ScrollAway in ReactScrollView for Fabric/non-Fabric.
Changelog: [Android][Added] Support for ScrollAway native nav bars added to ReactScrollView
Reviewed By: mdvacca
Differential Revision: D28308855
fbshipit-source-id: 9a922159ef50fb7c8e9c484a4b97ca57ab248496
Summary:
Changelog: [internal]
state infra uses rvalue references until this point. I assume the original author intended to rvalue reference even here.
This way, we avoid unnecessary copy.
Reviewed By: JoshuaGross
Differential Revision: D28057570
fbshipit-source-id: 19af480234d44acffcdbb22606607279e25c8aed
Summary:
Changelog: [internal]
EventPriority is backed by int, passing it by reference doesn't provide any performance benefits. Quite contrary, it can make it slower because of indirectness (in our case it is probably negligible).
Reviewed By: mdvacca
Differential Revision: D27938600
fbshipit-source-id: 37d1312627dd5a8f9012dfb35d21afe716a16ad7
Summary:
Allow conversion of LayoutMetrics to DebuggableString.
We also skipped a field in comparison. It probably isn't impactful in terms of production issues, but still wasn't correct.
Changelog: [Internal]
Reviewed By: sammy-SC
Differential Revision: D27709451
fbshipit-source-id: 987fc2de0a4562a295d6cbeffdd922cbf056b811
Summary:
This diff moves DisplayMode out of SurfaceHandler, this is necessary in order to use it from react/uimanager package
changelog: [internal] internal
Reviewed By: ShikaSD
Differential Revision: D27669846
fbshipit-source-id: 274869d8f2907b1b159f51240440acece09a746f
Summary:
Turns out that ShadowViews that have different LayoutMetrics will have the same hash. Fix that.
This helps for debugging LayoutAnimations.
Changelog: [Internal]
Reviewed By: sammy-SC
Differential Revision: D27585133
fbshipit-source-id: f0ac50619115150339089276e34fee5ddd0270bc
Summary:
Changelog: [internal]
`ShadowNode::Unshared` is preferred over `UnsharedShadowNode`. This diff removes last uses of the alias.
Differential Revision: D27407197
fbshipit-source-id: aa1440f80dcab523d61c186f2d3ce052f314e52c
Anandraj
Samuel Susla
Andres Suarez
Kevin Gozali
Nicola Corti
CodemodService FBSourceClangFormatLinterBot
Joshua Gross
Andrei Shikov
Neil Dhar
Vincent Lee
David Vacca
Ikko Ashimine
Andrew Coates