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:
This diff contains the code from the 35 diff stack - D27210587
This diff implement and integrates Mapbuffer into Fabric text measure system
changelog: [internal] internal
Reviewed By: JoshuaGross
Differential Revision: D27241836
fbshipit-source-id: f40a780df0723f27da440f709a8676cfcca63953
Summary:
Changelog: [internal]
StateWrapperImpl shouldn't retain State strongly because cleanup of `StateWrapperImpl` is triggered from Java and isn't guaranteed to take happen before runtime is destroyed.
This should resolve crash where `StateWrapperImpl`'s destruction causes a `~Pointer` to be called after runtime is destroyed.
Chain of ownership that will be broken by storing State weakly inside `StateWrapperImpl`.
`StateWrapperImpl -> ParagraphState -> TextLayourManager's cache -> AttributedString -> ShadowView -> EventEmitter -> EventTarget -> Pointer`
{F451105831}
Reviewed By: JoshuaGross
Differential Revision: D26815275
fbshipit-source-id: 0703c6dccc62c1d152923b786a83273fa8a03694
Summary:
This replaces the internal core implementation of `setState` with the new `updateStateWithAutorepeat` which is now the only option.
In short, `updateStateWithAutorepeat` works as `setState` with the following features:
* The state update might be performed several times until it succeeds.
* The callback is being called on every retry with actual previous data provided (can be different on every call).
* In case of a static value is provided (simple case, not lambda, the only case on Android for now), the same *new*/provided value will be used for all state updates. In this case, the state update cannot fail.
* If a callback is provided, the update operation can be canceled via returning `nullptr` from the callback.
This diff removes all mentions of the previous state update approach from the core; some other leftovers will be removed separatly.
Changelog: [Internal] Fabric-specific internal change.
Reviewed By: sammy-SC
Differential Revision: D25695600
fbshipit-source-id: 14b3d4bad7ee69e024a9b0b9fc018f7d58bf060c
Summary:
iOS will need to be implemented separately, but the shared C++ bits are in place.
Explanation: there is currently no way for the View layer to /know/ if an UpdateState call has succeeded or failed. Generally we just assume it succeeds, but if it fails we have no way of knowing or retrying.
This can cause some UI bugs. To mitigate this, I'm introducing a "failure" notification callback mechanism. The JNI bridging for this is a little complicated to avoid passing Runnable across the JNI, but it
should be much simpler on iOS.
In development this seems to make View components much more reliable.
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D22940187
fbshipit-source-id: 917f2932ae22d421f91fe8f4fca3f07dc089f820
Summary:
This diff removes the inner folder of react/renderer/core, moving all its files into react/renderer/core
This is necessary to simplify the compilation of Fabric in OSS
More details: https://fb.quip.com/amaRA631DX3K
changelog: [internal] Internal
Reviewed By: fkgozali, JoshuaGross
Differential Revision: D22875854
fbshipit-source-id: e2d969c3ec67eab1bbdc9288e5a4285c740fa944
Andres Suarez
Samuel Susla
David Vacca
Valentin Shergin
Joshua Gross