Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/34754
This Diff is the second step of enabling the CodeGen to parse and generate a NativeState for the components.
The feature has been largely requested by the OSS community but it could be also helpful for people in Meta.
## Changelog
[General][Added] - Always generate an empty NativeState for Fabric Components
Reviewed By: cortinico
Differential Revision: D39696435
fbshipit-source-id: e24768af78f59696c0b4db009e8065bb5c89316b
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/34750
This Diff is the first step of enabling the CodeGen to parse and generate a NativeState for the components.
The feature has been largely requested by the OSS community but it could be also helpful for people in Meta.
To allow the generation of custom `NativeState`, we first have to always generate a `ViewEventEmitter`: that's because the `ConcreteShadowNode` template lists the Generics with this order: `Name`, `Props`, `EventEmitter`, Others...
If we skip the `EventEmitters` and we put the `State`, React Native would think that the State is actually an `EventEmitter` and the build step will fail.
## Changelog
[General][Added] - Always generate a ViewEventEmitter for Fabric Components
Reviewed By: cortinico
Differential Revision: D39509869
fbshipit-source-id: 390cc146ef013baf1ed09d55a0182a5aeb5b9d9e
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/33937
This moves the build of RNTester from Unix Make to CMake
This will serve as a blueprint for users that are looking into using CMake end-to-end in their buildls.
In order to make this possible I had to:
* Add an `Android-prebuilt.cmake` file that works similar to the `Android-prebuilt.mk` for feeding prebuilt .so files to the consumer build.
* Update the codegen to use `JSI_EXPORT` on several objects/classes as CMake has stricter visibility rules than Make
* Update the sample native module in `nativemodule/samples/platform/android/` to use CMake instead of Make
Changelog:
[Internal] [Changed] - Build RN Tester with CMake
Reviewed By: cipolleschi
Differential Revision: D36760309
fbshipit-source-id: b99449a4b824b6c0064e833d4bcd5969b141df70
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/32840Closes#31516
I've cherry-picked the original PR that had merge conficts + updated all
the headers as the one for the TurboModule generators were not handled.
Original Commit Message from acoates
The codegen generates a Facebook copyright notice at the top of the generated files.
While this might make sense on the core files, this codegen will be run on external components too.
The notice also refers to a LICENSE file in the root of this project, which might not be there if this is run on another project.
I did a quick look at some of the codegen that we ship within windows dev tools, and it looks like we normally just have comments
saying the file was codegen'd and so the file shouldn't be manually edited.
Open to suggestions on what the comment header should say.
Changelog:
[General] [Changed] - Do not include Facebook license on users codegen'd code
Reviewed By: ShikaSD
Differential Revision: D33455176
fbshipit-source-id: b247e72efb242e79d99b388c80e4126633e5234d
Summary:
## Context
Inside native ViewConfigs, events are declared using these bubbling/direct EventType maps:
```
{
uiViewClassName: '...',
bubblingEventTypes: {
topFoo: {
registrationName: "onFoo"
}
},
directEventTypes: {},
validAttributes: {
},
}
```
**Pattern:** Note that the top name (i.e: topFoo) is just the registration name (i.e: onFoo) but with "on" replaced with "top".
On Android, registration names and top names don't have to follow this pattern. The top name can be **anything.** See ReactionsDockView:
https://www.internalfb.com/code/fbsource/[c430d46ed69a03a9d9f40cefa335a6d8bb92f8ec]/fbandroid/java/com/facebook/feedback/reactions/ui/overlay/react/ReactionsDockViewManager.java?lines=26-28%2C32-34%2C38
Here, ReactionDismissedEvent.EVENT_NAME is "topDismiss"
https://www.internalfb.com/code/fbsource/[c9f92314a5c46e561a831100dab82164808b05d0]/fbandroid/java/com/facebook/feedback/reactions/ui/overlay/react/ReactionDismissedEvent.java?lines=10-11%2C26
And so to provide you the flexibility to specify a custom topName, the codegen supports a customTopName in the direct/bubbling event types:
```
onDismissWithFeedbackReaction: DirectEventHandler<Event, 'topDismiss'>,
```
This generates the two bubbling event type entries in ReactionsDockView:
```
{
uiViewClassName: '...',
bubblingEventTypes: {
// custom top name
topDismiss: {
registrationName: "onDismissWithFeedbackReaction"
},
// what the top name should actually be
topDismissWithFeedbackReaction: {
registrationName: "onDismissWithFeedbackReaction"
}
},
directEventTypes: {},
validAttributes: {
},
}
```
**The Problem:** The entry created for "topDismissWithFeedbackReaction" is not necessary. This additional entry creates a discrepancy between ReactionsDockView's static ViewConfig and native ViewConfig. Therefore, this diff removes the second unnecessary entry.
Changelog: [Internal]
Reviewed By: JoshuaGross
Differential Revision: D33418730
fbshipit-source-id: 3988ff6906ad1b2e1ef988a19c64d1e042381ab1
Summary:
For every direct and bubbling event, RCTComponentData (iOS-only) creates a {eventName}: true entry in the component's ViewConfig validAttributes. This entry is unnecessary, and creates a discrepancy between ViewConfigs on iOS vs Android.
This diff removes this entry for all events to:
1. Reduce bloat in native ViewConfigs
2. Create consistency betweeen Android and iOS.
Changelog: [Internal]
Reviewed By: yungsters
Differential Revision: D33303950
fbshipit-source-id: 870c8a2a6d41156ac89bd8554eb09f292bb6108e
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:
So I was adding a new HTTPCookie prop to our WebView native component and found that my build was [failing](https://www.internalfb.com/diff/D32602297?dst_version_fbid=338931330931416) due to "redefinition of `value`". Looks like we use the name of the prop as a variable name during codegen, and this can conflict with some other hardcoded variable names. Rather than try and come up with a better prop name, I figured we can just append some string to our codegen name to reduce the chance for conflicts.
Changelog:
[Internal][Changed] - Change codegen variable naming to prevent conflicts to prop names
Reviewed By: JoshuaGross
Differential Revision: D32967807
fbshipit-source-id: 1b3631ec783b229eddfd3c801ffbb397910fc882
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/31543
Changelog:
[iOS][Added] - Description
When compiling iOS apps with flag `-Wnullability-completeness` (like Lightspeed app and soon Instagram), Objective-C headers are required to either have full *explicit* nullability annotations on all members of its public API, or none at all; partially annotated headers will fail to build that module.
RN native modules are currently generated with *partial* annotations. This works today because most apps are not compiled with `-Wnullability-completeness` turned on. But when we flip the switch for Instagram, the app doesn't build due to importing these RN partially annotated modules.
JavsScript Flow types are implied nonnull, and the current RN codegen translates Flow's [maybe/optional](https://flow.org/en/docs/types/maybe/) type to Obj-C `_Nullable` annotation, and everything else without an explicit Obj-C annotation. However this creates a mismatch with the Obj-C type system, where the implied default is *unannotated*, which is handled differently from nonnull when built with the nullability compiler flags.
There is a simple Obj-C macro that automatically adds *explicit nonnull* annotations to all members in a header: `NS_ASSUME_NONNULL_BEGIN` / `NS_ASSUME_NONNULL_END`. If we add this to *all* RN-generated headers, however, we run into issues:
1) We may erroneously assume any previously-unannotated header was meant to be nonnull and cause future bugs
2) Another compiler flag (`-Wnullable-to-nonnull-conversion`) statically analyzes Obj-C implementation code to prevent us from ever passing null to one of these headers. Much existing Obj-C code will break here, and it's ambiguous if these are true or false positives because of the first point.
Instead, in this diff we add a new BUCK flag `ios_assume_nonnull` to let module authors opt into automatic nonnull for unannotated members so that Obj-C headers are generated correctly in alignment with Flow's type system. We can migrate all libraries individually as needed and eventually make this the RN native codegen default.
Reviewed By: RSNara
Differential Revision: D28396446
fbshipit-source-id: ad3a3a97ab19183df4ef504b1c3140596c8f69ca
Summary:
ES Modules implicitly enable strict mode. Adding the "use strict" directive is, therefore, not required.
This diff removes all "use strict" directives from ES modules.
Changelog:
[Internal]
Reviewed By: motiz88
Differential Revision: D26172715
fbshipit-source-id: 57957bcbb672c4c3e62b1db633cf425c1c9d6430
Summary:
## Problem
Suppose we have this NativeModule spec, that uses Object literals that contain a property called "id":
```
export interface Spec extends TurboModule {
// Exported methods.
+getConstants: () => {|
id: string,
|};
+getObject: (arg: {id: Object}) => Object;
}
```
For both object literals, we'll generate C++ structs, backed by NSDictionaries. The method in each struct will be named "id_" to avoid a name clash with ObjC's `id` identifier. However, calling that id_ method should still access the "id" property in the corresponding NSDictionary.
## Expected Output
```
inline id<NSObject> JS::NativeSampleTurboModule::SpecGetObjectArg::id_() const
{
id const p = _v[@"id"];
return p;
}
inline JS::NativeSampleTurboModule::Constants::Builder::Builder(const Input i) : _factory(^{
NSMutableDictionary *d = [NSMutableDictionary new];
auto id_ = i.id_.get();
d[@"id"] = id_;
return d;
}) {}
```
## Actual Output
```
inline id<NSObject> JS::NativeSampleTurboModule::SpecGetObjectArg::id_() const
{
id const p = _v[@"id_"]; // <-- HERE!
return p;
}
inline JS::NativeSampleTurboModule::Constants::Builder::Builder(const Input i) : _factory(^{
NSMutableDictionary *d = [NSMutableDictionary new];
auto id_ = i.id_.get();
d[@"id_"] = id_; // <-- HERE!
return d;
}) {}
```
NOTE: This code was generated by running `jf get --version 119805822 && buck build //xplat/js:FBReactNativeSpec_Sample-flow-types-ios --show-output`
This diff fixes this mistake.
Changelog: [Internal]
Reviewed By: fkgozali
Differential Revision: D25907493
fbshipit-source-id: cb37cbf49db4f871b3f4046f7397a7b1b7df0357
Summary:
Changelog: [internal]
Codegen was generating code with return value number instead of boolean.
Reviewed By: RSNara
Differential Revision: D25863062
fbshipit-source-id: 780f88dd2d83e303b03d1ed9cc837ac6733f1702
Summary:
This BUCK target only existed for debugging purposes. Nothing depends on it.
Changelog: [Internal]
Reviewed By: JoshuaGross
Differential Revision: D25844759
fbshipit-source-id: e27fb04809a5c97adbeefd7df60b82992c6e1eda
Summary:
NOTE: Flow and Jest won't pass on this diff. Sandcastle, should, however, be green on D24236405 (i.e: the tip of this stack).
## Changes
1. NativeModule generators now use the new RN Codegen NativeModule schema.
2. Tangential: We're no longer removing the `Native` prefix from the NativeModule filename, assuming that that's the module name (problem: wrong), and prefixing again with Native (problem: redundant), when we're generating code. Instead, like the internal codegen, we simply pass the filename to the Codegen output. Our linters enforce that all NativeModule specs are contained with files that start off with `Native`.
3. `GenerateModuleCpp` was fixed to use the actual module name as opposed to the spec name. I added a comment inline.
Changelog: [Internal]
(Note: this ignores all push blocking failures!)
Reviewed By: PeteTheHeat
Differential Revision: D24236405
fbshipit-source-id: ccd6b5674d252c350be0ec8a86e7ca5f2f614778
Summary:
Remove extraneous newlines before and after structs, before copyright headers, and other locations.
Changelog: [Internal]
Reviewed By: fkgozali
Differential Revision: D24117137
fbshipit-source-id: 194996019b4cadef9239a78334f31c0bc89e3901
Summary:
Adjust generated ObjC++ code to resolve a few build time and run time errors:
* Suppress CONSTANTS struct implementations
* Use type alias name as struct name when serializing arguments that involve a type alias
* Use actual number of arguments for a method when generating method map.
With these changes in place, RNTester can be built and run using the code that is generated by the new codegen.
Changelog: [Internal]
Reviewed By: hramos
Differential Revision: D23926500
fbshipit-source-id: 88fcbb795fd71dc8155eb26348db943975e13e84
Summary:
* Removed extraneous closing brace.
* Fixed static method signature, replacing double colon with an underscore (`static facebook::jsi::Value __hostFunction_Native${moduleName}SpecJSI::${methodName}()` -> `static facebook::jsi::Value __hostFunction_Native${moduleName}SpecJSI_${methodName}()`).
* Wrap `getConstants` selector name with `selector()`.
* Pass through `getConstants` and `constantsToExport` to allow de-duping of `getConstants` method in generator output.
Note that the FBReactNativeSpec that is output by the generator still has some issues that need to be addressed before it can be used.
Changelog: [Internal]
Reviewed By: fkgozali
Differential Revision: D23910505
fbshipit-source-id: 37d884885b8878f38d40637377c2a74a728c3a13
Summary:
NativeModule specs exist under `react-native-github/packages/react-native-codegen/src/__tests__/modules/fixtures`. `GenerateModuleObjCpp-test.js` runs the RN Codegen on those NativeModule specs, and saves the output inside a snapshot. For convenience, the folowing command runs the legacy codegen on the fixtures:
```
buck build fbsource//xplat/js/react-native-github/packages/react-native-codegen/src/__tests__/modules:RNCodegenModuleFixtures-flow-types-ios --show-output
```
Changelog: [Internal]
Reviewed By: hramos
Differential Revision: D23637708
fbshipit-source-id: 3319f319515eca42b4499682313fea6e0bdc2a06
Summary:
This diff:
1. Simplifies the NativeModule schema Flow types.
2. Simplifies the NativeModule Flow parser, to accomodate the modified schema, and to reduce code duplication.
**Notes:**
- If the parser detects an unrecognized type within the context of parsing an Array's element type, it'll omit the `elementType` property of the `ArrayTypeAnnotation`. Details: T72031674. **Rationale:** Basically, when an array element type is supported, we use it in our generators. When it's unsupported, we ignore it. In the unsupported case, there's no point in trying to parse the Array element type, which is why I decided to omit the `elementType` property. Ideally, our NativeModule specs would never use unsupported types, in any context. This would allow us to always parse and use the elementType. However, that seems like a it could be a hefty migration: we have > 400 specs. Since, this isn't a battle we need to fight right now, I left a TODO at the relevant lines instead.
- The legacy codegen would generate structs for each object literal type in the file. In this re-implementation of the parser, I only insert into the aliases array when we detect a usage of a type-alias to an ObjectLiteral type annotation. With this decision, we won't be able to generate these unnecessary structs. This is good because we get rid of dead code. It's bad because it might make our migration to this codegen bit more difficult.
[WARNING] This diff produces flow failures that will be addressed in subsequent diffs.
Changelog: [Internal]
Reviewed By: fkgozali
Differential Revision: D23201387
fbshipit-source-id: 55ce0df925a8bae0e7d5bb2a9b63167607eba461
Summary:
This diff makes the ColorValue export "official" by exporting it from StyleSheet in order to encourage its use in product code.
Changelog: Moved ColorValue export from StyleSheetTypes to StyleSheet
Reviewed By: TheSavior
Differential Revision: D21076969
fbshipit-source-id: 972ef5a1b13bd9f6b7691a279a73168e7ce9d9ab
Summary:
We are rolling out exact-by-default syntax to xplat/js.
I had to manually move around some comments to preserve proper placement.
Changelog: [Internal]
Reviewed By: jbrown215
Differential Revision: D18633611
fbshipit-source-id: 48f7468dcc55b1d00985419d035a61c6820b3abe
Summary:
Changelog: [Internal]
Reverting the import to the previous local module style since importing from react-native seems to introduce some perf regression. We'll revisit this later in the future.
Reviewed By: yungsters
Differential Revision: D18383893
fbshipit-source-id: f11d46a4545768f39199fd6fd22fcf14905d0a74
Summary:
Changelog: [Internal]
Moved the imports for `TurboModuleRegistry` and `TurboModule` from `react-native`. This was a jscodeshift with the script: P120688078
Reviewed By: yungsters
Differential Revision: D18262538
fbshipit-source-id: 48fac15229c897408928511c5ecbb42f17ec7b42
Summary:
We need to migrate to HostComponent instead of the exported type from codegenNativeComponent which is the same type
Changelog:
[Internal] Migrate NativeComponentType from codegenNativeComponent to HostComponent
Reviewed By: rickhanlonii
Differential Revision: D17563307
fbshipit-source-id: 01c8fea8c67b33bed42ae28ffb8c132be87b9a7a
Summary:
Some props must have their default values set by native. To be able to support this, we have to introduce a null as a supported default value for some types. In this diff I'm adding support for null default values for float props. An example of this to be useful is `ReactDrawerLayoutManager`:
```
Override
public void setDrawerWidth(ReactDrawerLayout view, Nullable Float width) {
int widthInPx =
width == null
? LayoutParams.MATCH_PARENT
: Math.round(PixelUtil.toPixelFromDIP(width));
view.setDrawerWidth(widthInPx);
}
```
We need to be able to generate an interface method, that accepts a boxed `Float` value instead of the primitive `float` so that the native code can decide what value to use by default (`LayoutParams.MATCH_PARENT` in this case).
Reviewed By: rickhanlonii
Differential Revision: D17343172
fbshipit-source-id: 7662a4e0e495f58d05a92892f063535a359d09ae
Summary: Some props must have their default values set by native. To be able to support this, we have to introduce a `null` as a supported default value for some types. In this diff I'm adding support for `null` default values for boolean props. Check D17260168 for the example of the usage of the nullable boolean values.
Reviewed By: rickhanlonii, TheSavior
Differential Revision: D17258234
fbshipit-source-id: 63b7864be97856704d5964230526f23c0e395a67
Summary:
** Summary of failures encountered during the build **
Rule //fbandroid/java/com/facebook/catalyst/launcher:app_prod_debug FAILED because Command failed with exit code 1.
stderr: /java/InterfaceOnlyNativeComponentViewManagerDelegate.java:18: error: reference to setAccessibilityHint is ambiguous
mViewManager.setAccessibilityHint(view, value == null ? "" : (String) value);
^
both method setAccessibilityHint(T,java.lang.String) in com.facebook.react.uimanager.BaseViewManagerInterface and method setAccessibilityHint(T,java.lang.String) in com.facebook.react.viewmanagers.InterfaceOnlyNativeComponentViewManagerInterface match
/java/StringPropNativeComponentViewManagerDelegate.java:18: error: reference to setAccessibilityHint is ambiguous
mViewManager.setAccessibilityHint(view, value == null ? "" : (String) value);
^
both method setAccessibilityHint(T,java.lang.String) in com.facebook.react.uimanager.BaseViewManagerInterface and method setAccessibilityHint(T,java.lang.String) in com.facebook.react.viewmanagers.StringPropNativeComponentViewManagerInterface match
/java/StringPropNativeComponentViewManagerDelegate.java:21: error: reference to setAccessibilityRole is ambiguous
mViewManager.setAccessibilityRole(view, value == null ? null : (String) value);
^
both method setAccessibilityRole(T,java.lang.String) in com.facebook.react.uimanager.BaseViewManagerInterface and method setAccessibilityRole(T,java.lang.String) in com.facebook.react.viewmanagers.StringPropNativeComponentViewManagerInterface match
Errors: 3. Warnings: 0.
When running <javac_jar>.
When building rule //xplat/js/react-native-github/packages/react-native-codegen:generated_components_java-codegen_testsAndroid.
```
Reviewed By: mdvacca
Differential Revision: D17107929
fbshipit-source-id: 32bc553d450628c530e22cb13f305e3a3e0f45cd
Summary: Adds e2e tests for the array of object prop types in the codegen
Reviewed By: rubennorte, motiz88
Differential Revision: D16814301
fbshipit-source-id: 613f32a888451c0c1b7359133b7bf88878e36916
Summary: Param of function can be optional and it should have impact on native code. Inspired by old codegen
Reviewed By: RSNara
Differential Revision: D16763884
fbshipit-source-id: dab50275f902dbe4af25824bb6128d3b37fc43cd
Summary:
This diff introduces an interface `ViewManagerDelegate` and its base implementation `BaseViewManagerDelegate`, which is used as a parent class for all view manager delegates generated by the JS codegen. Before the changes in this diff, generated delegates didn't support setting the base view properties such as background color, rotation, opacity, etc. Now it's possible to do by using `BaseViewManagerDelegate.setProperty(...)`, and since all generated delegates extend BaseViewManagerDelegate, they can just call `super.setProperty(...)` for properties they don't want to handle.
This diff also introduced a new method `ViewManager.getDelegate()`. This will allow view managers to return an instance of the delegate generated by JS and ensure that the view properties are set in a type-safe manner. If this method returns null (it does by default), we fall back to the default implementation of setting view properties using Java-generated `$$PropsSetter`
classes.
This is an example of an interface class generated by JS:
```
public interface RCTAxialGradientViewViewManagerInterface<T extends View> {
void setColors(T view, Nullable ReadableArray value);
void setLocations(T view, Nullable ReadableArray value);
void setEndX(T view, Float value);
void setEndY(T view, Float value);
void setStartX(T view, Float value);
void setStartY(T view, Float value);
}
```
This is an example of a delegate class generated by JS:
```
public class RCTAxialGradientViewManagerDelegate<T extends View, U extends BaseViewManager<T, ? extends LayoutShadowNode> & RCTAxialGradientViewManagerInterface<T>> extends BaseViewManagerDelegate<T, U> {
public RCTAxialGradientViewManagerDelegate(U viewManager) {
super(viewManager);
}
Override
public void setProperty(T view, String propName, Nullable Object value) {
switch (propName) {
case "colors":
mViewManager.setColors(view, (ReadableArray) value);
break;
case "locations":
mViewManager.setLocations(view, (ReadableArray) value);
break;
case "endX":
mViewManager.setEndX(view, value == null ? Float.NaN : ((Double) value).floatValue());
break;
case "endY":
mViewManager.setEndY(view, value == null ? Float.NaN : ((Double) value).floatValue());
break;
case "startX":
mViewManager.setStartX(view, value == null ? Float.NaN : ((Double) value).floatValue());
break;
case "startY":
mViewManager.setStartY(view, value == null ? Float.NaN : ((Double) value).floatValue());
break;
default:
super.setProperty(view, propName, value);
}
}
}
```
NOTE: What if a view manager, for instance ReactAxialGradientManager, wanted to add support for the borderRadius prop? In the old Java codegen, it would just need to create a method and annotate it with ReactProp (name = ViewProps.BORDER_RADIUS) and $$PropsSetter would call this method when a property with this name must be set. With the new JS codegen, borderRadius is a part of the basic view props, so setBorderRadius is not generated as a part of the ViewManagerInterface, so it’s not possible to set this value. I see two options: 1) add a method boolean setProperty (String propName, Object value) and let the view manager handle it in a non-type safe way (return true if it’s been handled). 2) Generate BaseViewManagerInterface which will include all basic view props and make BaseViewManager implement this interface, leaving all methods empty so that it stays compatible with the current implementation. Override these methods in a view manager that needs to handle a specific property in a custom way (so we would override setBorderRadius in ReactAxialGradientManager).
Reviewed By: mdvacca
Differential Revision: D16667686
fbshipit-source-id: 06a15a92f8af55640b7a53c5a34f40366d1be2a8
Summary:
Need to add explicit type annotations in these areas to unblock types-first architecture for Flow. These are locations the codemod could not automatically handle.
I'll call out areas I need a close eye on in the comments.
Reviewed By: panagosg7
Differential Revision: D16659053
fbshipit-source-id: 167dd2abe093019b128676426374c1c62cf71e7f
Summary: Retuned value can be nullable and it need to be handled
Reviewed By: RSNara
Differential Revision: D16687359
fbshipit-source-id: 7869c4e2b1da69b680b6eade3c88e0558077b705
Summary: Add handling of `$ReadOnly`, $ReadOnlyArray`. Drop handling of params for callback (does not impact native generated node) and promises' types (does not impact native generated node). Remove typo from native codegen.
Reviewed By: RSNara
Differential Revision: D16686886
fbshipit-source-id: 26345978bbbba0cee14d00e7b5b9e5017c89a46c
Summary: In this diff I add handling optional values in constants object. Behaviour is slightly different when it comes to string, objects etc., so I add tests for every of these cases.
Reviewed By: RSNara
Differential Revision: D16599254
fbshipit-source-id: 380c5235fefeb70a521733369011e0051e18859a
Summary:
This diff contains bunch of minor and straightforward fixes which need to be shipped together. They are all related to integrating objCpp codegen and compiling examples.
#Facebook
I explain in comments my thoughts
Reviewed By: RSNara
Differential Revision: D16520560
fbshipit-source-id: 15392017a92f5a7ec5da71b552ec6c6904625a86