react-native/architecture.gradle
Kevin Gozali c085068d7b OSS Android: architecture.gradle base setup
Summary:
Introduced `architecture.gradle` that sets up pluggable build-time codegen steps for Gradle so that:
* Libraries, including core ReactAndroid, can produce the new architecture codegen (NativeModule **Java** specs in this diff) during build time
* Hosting app (e.g. RNTester) can produce its own set of codegen specs separately

**Please note that this is still work in progress, hence app templates have not been updated to use it yet.**

In order to activate this setup, the env variable `USE_CODEGEN=1` must be set. Eventually, this var will be removed from the logic.

With this change, RNTester:
* Will see all the generated specs populated in the Gradle build dir, which should be equivalent to the currently [**checked in version**](https://github.com/facebook/react-native/tree/master/ReactAndroid/src/main/java/com/facebook/fbreact/specs).
* The specs will compile, but **have not been validated** vs the existing NativeModule .java classes through out the core -- that will be the next step
* The specs are under `com.facebook.fbreact.specs.beta` namespace, which will be configurable in the future. `.beta` is added to avoid conflict with the existing files in the repo.

### Is this all we need to enable TurboModule in Android?
No. There are a few more pieces needed:
* C++ codegen output for JNI layer for each NativeModule spec
* The C++ module lookup for TurboModule Manager
* The JNI build setup in Gradle for these C++ output
* Toggle to enable TurboModule system in the entire app

Changelog: [Internal]

Reviewed By: JoshuaGross

Differential Revision: D22838581

fbshipit-source-id: d972e2fbb37bdbd3354e72b014fc8bb27a33b9ac
2020-07-31 19:04:54 -07:00

89 lines
2.4 KiB
Groovy

/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
def codegenDir = "$rootDir/packages/react-native-codegen";
def codegenGenerateSchemaCli = "$codegenDir/lib/cli/combine/combine-js-to-schema-cli.js";
def codegenGenerateNativeModuleSpecsCli = "$rootDir/scripts/generate-native-modules-specs-cli.js";
def schemaFile = "schema.json";
// TODO: Consider building Gradle plugin instead.
/**
* The config is derived from app-level `project.react`.
*/
ext.generateNativeArtifactsFromJavaScript = { Map config ->
def nodeExecutableAndArgs = config.nodeExecutableAndArgs ?: ["node"];
def jsRootDir = config.jsRootDir ?: config.root;
if (!config.enableCodegen) {
return;
}
// 1. Create build dir
def generatedSrcDir = file("$buildDir/generated/source/codegen");
// 2. Produce schema from JS files.
task generateCodegenSchemaFromJavaScript(type: Exec) {
doFirst {
generatedSrcDir.deleteDir()
generatedSrcDir.mkdirs()
}
def schemaOutputFile = file("$generatedSrcDir/$schemaFile");
inputs.files fileTree(dir: codegenDir)
inputs.files fileTree(dir: jsRootDir)
outputs.file(schemaOutputFile)
def execCommands = ["yarn"] + nodeExecutableAndArgs + [
codegenGenerateSchemaCli,
"$schemaOutputFile",
jsRootDir,
];
commandLine execCommands
ext.schema = {
schemaOutputFile
}
}
// 3. Generate Java code from schema
task generateCodegenArtifactsFromSchema(dependsOn: 'generateCodegenSchemaFromJavaScript', type: Exec) {
def generatedSchema = tasks.generateCodegenSchemaFromJavaScript.schema();
def javaPackageName = config.codegenJavaPackageName ?: "com.facebook.fbreact.specs.beta";
def javaPackageDir = javaPackageName.replace(".", "/");
def outputDir = file("$generatedSrcDir/java/$javaPackageDir");
inputs.files fileTree(dir: codegenDir)
inputs.files generatedSchema
outputs.dir(outputDir)
def execCommands = ["yarn"] + nodeExecutableAndArgs + [
codegenGenerateNativeModuleSpecsCli,
"android",
"$generatedSchema",
"$outputDir",
];
commandLine execCommands
}
// 4. add deps + srcs
preBuild.dependsOn generateCodegenArtifactsFromSchema
android {
sourceSets {
main {
java {
srcDirs += "$generatedSrcDir/java"
}
}
}
}
}