Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/32007
This Diff simplifies the codegen Gradle build.
Previously the build used to have a 2-level nesting of included build.
Turns out that the `react-native-codegen/android/build.gradle` build
is just providing a task and including an inner build that contains the codegen
Gradle plugin. I've moved such plugin to the outer build.
This will also make sure that the Gradle plugin files are properly index by the
IDE when opening the build (as nested included build are not yet supported).
Changelog:
Internal - Flatten the `react-native-codegen` Gradle included build
Reviewed By: fkgozali, ShikaSD
Differential Revision: D30227784
fbshipit-source-id: af304afeeba1926f8b7b5b47cf69889d3f808f5f
Summary:
Instead of applying configs from gradle scripts, this introduces a proper Gradle plugin to enable Codegen in an application or library project. In the build.gradle, one enables it by:
```
plugins {
id("com.android.application")
id("com.facebook.react.codegen") // <---
}
// ...
react { // <--- the new plugin extension
enableCodegen = System.getenv("USE_CODEGEN")
jsRootDir = file("$rootDir/RNTester")
reactNativeRootDir = file("$rootDir")
}
```
The plugin supports `react` plugin extension as demonstrated above. Adding this:
* automatically generates all TurboModule Java files via react-native-codegen **before the `preBuild` Gradle task**
* automatically adds the files to the `android {}` project configuration
* is done per project (build.gradle)
This will be the foundation for future React Native gradle plugin beyond just for react-native-codegen.
Changelog: [Internal]
Reviewed By: mdvacca
Differential Revision: D23065685
fbshipit-source-id: 4ea67e48fab33b238c0973463cdb00de8cdadfcc
Summary:
Instead of sourcing-in a .gradle file to setup codegen tasks in Gradle, let's define a proper `com.facebook.react.codegen` Gradle plugin, so that any Gradle project (lib/app) can include it via:
```
plugins {
id 'com.facebook.react.codegen'
}
```
The idea (not yet implemented in this commit) is to then allow those projects to add this section in the projects:
```
codegen {
enableCodegen = ...
jsRootDir = ...
}
```
This is more scalable and less hacky.
Important notes:
* The Gradle plugin should be prepared during the build, we're not going to publish it to Maven or other repo at this point.
* This setup is inspired by composite build setup explained here: https://ncorti.com/blog/gradle-plugins-and-composite-builds
* All android specific setup is added under `packages/react-native-codegen/android/` dir, but long term, we may want to move it up to `packages/react-native-codegen/` along side setup for other platforms.
* As part of this setup, the plugin will have an option (to be validated) to produce Java specs using https://github.com/square/javapoet
* This is the same library already used for React Native Android annotation processors
* This generator will not deal with parsing Flow types into schema, it will just takes in the schema and produce Java code
* We're evaluating whether JavaPoet is a better choice for Java code generation long term, vs building it in JS via string concatenation: https://github.com/facebook/react-native/blob/master/packages/react-native-codegen/src/generators/modules/GenerateModuleJavaSpec.js
* This commit produces a sample Java code, not the actual codegen output
Changelog: [Internal]
To try this out, run this Gradle task:
```
USE_CODEGEN=1 ./gradlew :ReactAndroid:generateJava
```
Reviewed By: JoshuaGross, mdvacca
Differential Revision: D22917315
fbshipit-source-id: 0b79dba939b73ff1305b4b4fd86ab897c7a48d53
Nicola Corti
Kevin Gozali