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AtomicFUGradlePlugin.kt
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AtomicFUGradlePlugin.kt
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/*
* Copyright 2017-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
package kotlinx.atomicfu.plugin.gradle
import kotlinx.atomicfu.transformer.*
import org.gradle.api.*
import org.gradle.api.file.*
import org.gradle.api.internal.*
import org.gradle.api.provider.Provider
import org.gradle.api.provider.ProviderFactory
import org.gradle.api.tasks.*
import org.gradle.api.tasks.testing.*
import org.gradle.jvm.tasks.*
import org.gradle.util.*
import org.jetbrains.kotlin.gradle.dsl.*
import org.jetbrains.kotlin.gradle.dsl.KotlinCompile
import org.jetbrains.kotlin.gradle.plugin.*
import java.io.*
import java.util.*
import org.jetbrains.kotlin.gradle.targets.js.*
import org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrTarget
import org.jetbrains.kotlin.gradle.tasks.*
import org.jetbrains.kotlinx.atomicfu.gradle.*
import javax.inject.Inject
private const val EXTENSION_NAME = "atomicfu"
private const val ORIGINAL_DIR_NAME = "originalClassesDir"
private const val COMPILE_ONLY_CONFIGURATION = "compileOnly"
private const val IMPLEMENTATION_CONFIGURATION = "implementation"
private const val TEST_IMPLEMENTATION_CONFIGURATION = "testImplementation"
// If the project uses KGP <= 1.6.20, only JS IR compiler plugin is available, and it is turned on via setting this property.
// The property is supported for backwards compatibility.
private const val ENABLE_JS_IR_TRANSFORMATION_LEGACY = "kotlinx.atomicfu.enableIrTransformation"
private const val ENABLE_JS_IR_TRANSFORMATION = "kotlinx.atomicfu.enableJsIrTransformation"
private const val ENABLE_JVM_IR_TRANSFORMATION = "kotlinx.atomicfu.enableJvmIrTransformation"
private const val ENABLE_NATIVE_IR_TRANSFORMATION = "kotlinx.atomicfu.enableNativeIrTransformation"
private const val MIN_SUPPORTED_GRADLE_VERSION = "7.0"
private const val MIN_SUPPORTED_KGP_VERSION = "1.7.0"
open class AtomicFUGradlePlugin : Plugin<Project> {
override fun apply(project: Project) = project.run {
checkCompatibility()
val pluginVersion = rootProject.buildscript.configurations.findByName("classpath")
?.allDependencies?.find { it.name == "atomicfu-gradle-plugin" }?.version
extensions.add(EXTENSION_NAME, AtomicFUPluginExtension(pluginVersion))
applyAtomicfuCompilerPlugin()
configureDependencies()
configureTasks()
}
}
private fun Project.checkCompatibility() {
val currentGradleVersion = GradleVersion.current()
val kotlinVersion = getKotlinVersion()
val minSupportedVersion = GradleVersion.version(MIN_SUPPORTED_GRADLE_VERSION)
if (currentGradleVersion < minSupportedVersion) {
throw GradleException(
"The current Gradle version is not compatible with Atomicfu gradle plugin. " +
"Please use Gradle $MIN_SUPPORTED_GRADLE_VERSION or newer, or the previous version of Atomicfu gradle plugin."
)
}
if (!kotlinVersion.atLeast(1, 7, 0)) {
throw GradleException(
"The current Kotlin gradle plugin version is not compatible with Atomicfu gradle plugin. " +
"Please use Kotlin $MIN_SUPPORTED_KGP_VERSION or newer, or the previous version of Atomicfu gradle plugin."
)
}
}
private fun Project.applyAtomicfuCompilerPlugin() {
val kotlinVersion = getKotlinVersion()
// for KGP >= 1.7.20:
// compiler plugin for JS IR is applied via the property `kotlinx.atomicfu.enableJsIrTransformation`
// compiler plugin for JVM IR is applied via the property `kotlinx.atomicfu.enableJvmIrTransformation`
if (kotlinVersion.atLeast(1, 7, 20)) {
plugins.apply(AtomicfuKotlinGradleSubplugin::class.java)
extensions.getByType(AtomicfuKotlinGradleSubplugin.AtomicfuKotlinGradleExtension::class.java).apply {
isJsIrTransformationEnabled = rootProject.getBooleanProperty(ENABLE_JS_IR_TRANSFORMATION)
isJvmIrTransformationEnabled = rootProject.getBooleanProperty(ENABLE_JVM_IR_TRANSFORMATION)
if (kotlinVersion.atLeast(1, 9, 20)) {
// Native IR transformation is available since Kotlin 1.9.20
isNativeIrTransformationEnabled = rootProject.getBooleanProperty(ENABLE_NATIVE_IR_TRANSFORMATION)
}
}
} else {
// for KGP >= 1.6.20 && KGP <= 1.7.20:
// compiler plugin for JS IR is applied via the property `kotlinx.atomicfu.enableIrTransformation`
// compiler plugin for JVM IR is not supported yet
if (kotlinVersion.atLeast(1, 6, 20)) {
if (rootProject.getBooleanProperty(ENABLE_JS_IR_TRANSFORMATION_LEGACY)) {
plugins.apply(AtomicfuKotlinGradleSubplugin::class.java)
}
}
}
}
private fun Project.configureDependencies() {
withPluginWhenEvaluatedDependencies("kotlin") { version ->
dependencies.add(
if (config.transformJvm) COMPILE_ONLY_CONFIGURATION else IMPLEMENTATION_CONFIGURATION,
getAtomicfuDependencyNotation(Platform.JVM, version)
)
dependencies.add(TEST_IMPLEMENTATION_CONFIGURATION, getAtomicfuDependencyNotation(Platform.JVM, version))
}
withPluginWhenEvaluatedDependencies("org.jetbrains.kotlin.js") { version ->
dependencies.add(
if (config.transformJs) COMPILE_ONLY_CONFIGURATION else IMPLEMENTATION_CONFIGURATION,
getAtomicfuDependencyNotation(Platform.JS, version)
)
dependencies.add(TEST_IMPLEMENTATION_CONFIGURATION, getAtomicfuDependencyNotation(Platform.JS, version))
addJsCompilerPluginRuntimeDependency()
}
withPluginWhenEvaluatedDependencies("kotlin-multiplatform") { version ->
addJsCompilerPluginRuntimeDependency()
configureMultiplatformPluginDependencies(version)
}
}
private fun Project.configureMultiplatformPluginDependencies(version: String) {
val multiplatformExtension = kotlinExtension as? KotlinMultiplatformExtension ?: error("Expected kotlin multiplatform extension")
val atomicfuDependency = "org.jetbrains.kotlinx:atomicfu:$version"
multiplatformExtension.sourceSets.getByName("commonMain").dependencies {
compileOnly(atomicfuDependency)
}
multiplatformExtension.sourceSets.getByName("commonTest").dependencies {
implementation(atomicfuDependency)
}
// Include atomicfu as a dependency for publication when transformation for the target is disabled
multiplatformExtension.targets.all { target ->
if (isTransformationDisabled(target)) {
target.compilations.all { compilation ->
compilation
.defaultSourceSet
.dependencies {
implementation(atomicfuDependency)
}
}
}
}
}
private data class KotlinVersion(val major: Int, val minor: Int, val patch: Int)
private fun Project.getKotlinVersion(): KotlinVersion {
val kotlinVersion = getKotlinPluginVersion()
val (major, minor) = kotlinVersion
.split('.')
.take(2)
.map { it.toInt() }
val patch = kotlinVersion.substringAfterLast('.').substringBefore('-').toInt()
return KotlinVersion(major, minor, patch)
}
private fun KotlinVersion.atLeast(major: Int, minor: Int, patch: Int) =
this.major == major && (this.minor == minor && this.patch >= patch || this.minor > minor) || this.major > major
// kotlinx-atomicfu compiler plugin is available for KGP >= 1.6.20
private fun Project.isCompilerPluginAvailable() = getKotlinVersion().atLeast(1, 6, 20)
private fun Project.getBooleanProperty(name: String) =
rootProject.findProperty(name)?.toString()?.toBooleanStrict() ?: false
private fun String.toBooleanStrict(): Boolean = when (this) {
"true" -> true
"false" -> false
else -> throw IllegalArgumentException("The string doesn't represent a boolean value: $this")
}
private fun Project.needsJsIrTransformation(target: KotlinTarget): Boolean =
(rootProject.getBooleanProperty(ENABLE_JS_IR_TRANSFORMATION) || rootProject.getBooleanProperty(ENABLE_JS_IR_TRANSFORMATION_LEGACY))
&& target.isJsIrTarget()
private fun Project.needsJvmIrTransformation(target: KotlinTarget): Boolean =
rootProject.getBooleanProperty(ENABLE_JVM_IR_TRANSFORMATION) &&
(target.platformType == KotlinPlatformType.jvm || target.platformType == KotlinPlatformType.androidJvm)
private fun Project.needsNativeIrTransformation(target: KotlinTarget): Boolean =
rootProject.getBooleanProperty(ENABLE_NATIVE_IR_TRANSFORMATION) &&
(target.platformType == KotlinPlatformType.native)
private fun KotlinTarget.isJsIrTarget() =
(this is KotlinJsTarget && this.irTarget != null) ||
(this is KotlinJsIrTarget && this.platformType != KotlinPlatformType.wasm)
private fun Project.isTransformationDisabled(target: KotlinTarget): Boolean {
val platformType = target.platformType
return !config.transformJvm && (platformType == KotlinPlatformType.jvm || platformType == KotlinPlatformType.androidJvm) ||
!config.transformJs && platformType == KotlinPlatformType.js ||
platformType == KotlinPlatformType.wasm ||
!needsNativeIrTransformation(target) && platformType == KotlinPlatformType.native
}
// Adds kotlinx-atomicfu-runtime as an implementation dependency to the JS IR target:
// it provides inline methods that replace atomic methods from the library and is needed at runtime.
private fun Project.addJsCompilerPluginRuntimeDependency() {
if (isCompilerPluginAvailable()) {
withKotlinTargets { target ->
if (target.isJsIrTarget()) {
target.compilations.forEach { kotlinCompilation ->
kotlinCompilation.dependencies {
if (getKotlinVersion().atLeast(1, 7, 10)) {
// since Kotlin 1.7.10 `kotlinx-atomicfu-runtime` is published and should be added directly
implementation("org.jetbrains.kotlin:kotlinx-atomicfu-runtime:${getKotlinPluginVersion()}")
} else {
implementation("org.jetbrains.kotlin:atomicfu:${getKotlinPluginVersion()}")
}
}
}
}
}
}
}
private enum class Platform(val suffix: String) {
JVM("-jvm"),
JS("-js"),
NATIVE(""),
MULTIPLATFORM("")
}
private enum class CompilationType { MAIN, TEST }
private fun String.compilationNameToType(): CompilationType? = when (this) {
KotlinCompilation.MAIN_COMPILATION_NAME -> CompilationType.MAIN
KotlinCompilation.TEST_COMPILATION_NAME -> CompilationType.TEST
else -> null
}
private val Project.config: AtomicFUPluginExtension
get() = extensions.findByName(EXTENSION_NAME) as? AtomicFUPluginExtension ?: AtomicFUPluginExtension(null)
private fun getAtomicfuDependencyNotation(platform: Platform, version: String): String =
"org.jetbrains.kotlinx:atomicfu${platform.suffix}:$version"
// Note "afterEvaluate" does nothing when the project is already in executed state, so we need
// a special check for this case
private fun <T> Project.whenEvaluated(fn: Project.() -> T) {
if (state.executed) {
fn()
} else {
afterEvaluate { fn() }
}
}
private fun Project.withPluginWhenEvaluated(plugin: String, fn: Project.() -> Unit) {
pluginManager.withPlugin(plugin) { whenEvaluated(fn) }
}
private fun Project.withPluginWhenEvaluatedDependencies(plugin: String, fn: Project.(version: String) -> Unit) {
withPluginWhenEvaluated(plugin) {
config.dependenciesVersion?.let { fn(it) }
}
}
private fun Project.withKotlinTargets(fn: (KotlinTarget) -> Unit) {
extensions.findByType(KotlinTargetsContainer::class.java)?.let { kotlinExtension ->
// find all compilations given sourceSet belongs to
kotlinExtension.targets
.all { target -> fn(target) }
}
}
private fun KotlinCompile<*>.setFriendPaths(friendPathsFileCollection: FileCollection) {
val (majorVersion, minorVersion) = project.getKotlinPluginVersion()
.split('.')
.take(2)
.map { it.toInt() }
if (majorVersion == 1 && minorVersion < 7) {
(this as? AbstractKotlinCompile<*>)?.friendPaths?.from(friendPathsFileCollection)
} else {
// See KT-KT-54167 (works only for KGP 1.7.0+)
(this as BaseKotlinCompile).friendPaths.from(friendPathsFileCollection)
}
}
private fun Project.configureTasks() {
val config = config
withPluginWhenEvaluated("kotlin") {
if (config.transformJvm) configureJvmTransformation()
}
withPluginWhenEvaluated("org.jetbrains.kotlin.js") {
if (config.transformJs) configureJsTransformation()
}
withPluginWhenEvaluated("kotlin-multiplatform") {
configureMultiplatformTransformation()
}
}
private fun Project.configureJvmTransformation() {
if (kotlinExtension is KotlinJvmProjectExtension || kotlinExtension is KotlinAndroidProjectExtension) {
val target = (kotlinExtension as KotlinSingleTargetExtension<*>).target
if (!needsJvmIrTransformation(target)) {
configureTransformationForTarget(target)
}
}
}
private fun Project.configureJsTransformation() {
val target = (kotlinExtension as KotlinJsProjectExtension).js()
if (!needsJsIrTransformation(target)) {
configureTransformationForTarget(target)
}
}
private fun Project.configureMultiplatformTransformation() =
withKotlinTargets { target ->
// Skip transformation for common, native and wasm targets or in case IR transformation by the compiler plugin is enabled (for JVM or JS targets)
if (target.platformType == KotlinPlatformType.common ||
target.platformType == KotlinPlatformType.native ||
target.platformType == KotlinPlatformType.wasm ||
needsJvmIrTransformation(target) || needsJsIrTransformation(target)
) {
return@withKotlinTargets
}
configureTransformationForTarget(target)
}
private fun Project.configureTransformationForTarget(target: KotlinTarget) {
val originalDirsByCompilation = hashMapOf<KotlinCompilation<*>, FileCollection>()
val config = config
target.compilations.all compilations@{ compilation ->
val compilationType = compilation.name.compilationNameToType()
?: return@compilations // skip unknown compilations
val classesDirs = compilation.output.classesDirs
// make copy of original classes directory
@Suppress("UNCHECKED_CAST")
val compilationTask = compilation.compileTaskProvider as TaskProvider<KotlinCompileTool>
val originalDestinationDirectory = project.layout.buildDirectory
.dir("classes/atomicfu-orig/${target.name}/${compilation.name}")
compilationTask.configure {
if (it is Kotlin2JsCompile) {
@Suppress("INVISIBLE_REFERENCE", "INVISIBLE_MEMBER", "EXPOSED_PARAMETER_TYPE")
it.defaultDestinationDirectory.value(originalDestinationDirectory)
} else {
it.destinationDirectory.value(originalDestinationDirectory)
}
}
val originalClassesDirs: FileCollection = project.objects.fileCollection().from(
compilationTask.flatMap { it.destinationDirectory }
)
originalDirsByCompilation[compilation] = originalClassesDirs
val transformedClassesDir = project.layout.buildDirectory
.dir("classes/atomicfu/${target.name}/${compilation.name}")
val transformTask = when (target.platformType) {
KotlinPlatformType.jvm, KotlinPlatformType.androidJvm -> {
// create transformation task only if transformation is required and JVM IR compiler transformation is not enabled
if (config.transformJvm) {
project.registerJvmTransformTask(compilation)
.configureJvmTask(
compilation.compileDependencyFiles,
compilation.compileAllTaskName,
transformedClassesDir,
originalClassesDirs,
config
)
.also {
compilation.defaultSourceSet.kotlin.compiledBy(it, AtomicFUTransformTask::destinationDirectory)
}
} else null
}
KotlinPlatformType.js -> {
// create transformation task only if transformation is required and JS IR compiler transformation is not enabled
if (config.transformJs && !needsJsIrTransformation(target)) {
project.registerJsTransformTask(compilation)
.configureJsTask(
compilation.compileAllTaskName,
transformedClassesDir,
originalClassesDirs,
config
)
.also {
compilation.defaultSourceSet.kotlin.compiledBy(it, AtomicFUTransformJsTask::destinationDirectory)
}
} else null
}
else -> error("Unsupported transformation platform '${target.platformType}'")
}
if (transformTask != null) {
//now transformTask is responsible for compiling this source set into the classes directory
compilation.defaultSourceSet.kotlin.destinationDirectory.value(transformedClassesDir)
classesDirs.setFrom(transformedClassesDir)
classesDirs.setBuiltBy(listOf(transformTask))
tasks.withType(Jar::class.java).configureEach {
if (name == target.artifactsTaskName) {
it.setupJarManifest(multiRelease = config.jvmVariant.toJvmVariant() == JvmVariant.BOTH)
}
}
}
// test should compile and run against original production binaries
if (compilationType == CompilationType.TEST) {
val mainCompilation =
compilation.target.compilations.getByName(KotlinCompilation.MAIN_COMPILATION_NAME)
val originalMainClassesDirs = project.objects.fileCollection().from(
mainCompilation.compileTaskProvider.flatMap { (it as KotlinCompileTool).destinationDirectory }
)
// compilationTask.destinationDirectory was changed from build/classes/kotlin/main to build/classes/atomicfu-orig/main,
// so we need to update libraries
(tasks.findByName(compilation.compileKotlinTaskName) as? AbstractKotlinCompileTool<*>)
?.libraries
?.setFrom(
originalMainClassesDirs + compilation.compileDependencyFiles
)
if (transformTask != null) {
// if transform task was not created, then originalMainClassesDirs == mainCompilation.output.classesDirs
(tasks.findByName("${target.name}${compilation.name.capitalize()}") as? Test)?.classpath =
originalMainClassesDirs + (compilation as KotlinCompilationToRunnableFiles).runtimeDependencyFiles - mainCompilation.output.classesDirs
}
compilation.compileKotlinTask.setFriendPaths(originalMainClassesDirs)
}
}
}
private fun String.toJvmVariant(): JvmVariant = enumValueOf(toUpperCase(Locale.US))
private fun Project.registerJvmTransformTask(compilation: KotlinCompilation<*>): TaskProvider<AtomicFUTransformTask> =
tasks.register(
"transform${compilation.target.name.capitalize()}${compilation.name.capitalize()}Atomicfu",
AtomicFUTransformTask::class.java
)
private fun Project.registerJsTransformTask(compilation: KotlinCompilation<*>): TaskProvider<AtomicFUTransformJsTask> =
tasks.register(
"transform${compilation.target.name.capitalize()}${compilation.name.capitalize()}Atomicfu",
AtomicFUTransformJsTask::class.java
)
private fun TaskProvider<AtomicFUTransformTask>.configureJvmTask(
classpath: FileCollection,
classesTaskName: String,
transformedClassesDir: Provider<Directory>,
originalClassesDir: FileCollection,
config: AtomicFUPluginExtension
): TaskProvider<AtomicFUTransformTask> =
apply {
configure {
it.dependsOn(classesTaskName)
it.classPath = classpath
it.inputFiles = originalClassesDir
it.destinationDirectory.value(transformedClassesDir)
it.jvmVariant = config.jvmVariant
it.verbose = config.verbose
}
}
private fun TaskProvider<AtomicFUTransformJsTask>.configureJsTask(
classesTaskName: String,
transformedClassesDir: Provider<Directory>,
originalClassesDir: FileCollection,
config: AtomicFUPluginExtension
): TaskProvider<AtomicFUTransformJsTask> =
apply {
configure {
it.dependsOn(classesTaskName)
it.inputFiles = originalClassesDir
it.destinationDirectory.value(transformedClassesDir)
it.verbose = config.verbose
}
}
private fun Jar.setupJarManifest(multiRelease: Boolean) {
if (multiRelease) {
manifest.attributes.apply {
put("Multi-Release", "true")
}
}
}
class AtomicFUPluginExtension(pluginVersion: String?) {
var dependenciesVersion = pluginVersion
var transformJvm = true
var transformJs = true
var jvmVariant: String = "FU"
var verbose: Boolean = false
}
@CacheableTask
abstract class AtomicFUTransformTask : ConventionTask() {
@get:Inject
internal abstract val providerFactory: ProviderFactory
@get:Inject
internal abstract val projectLayout: ProjectLayout
@PathSensitive(PathSensitivity.RELATIVE)
@InputFiles
lateinit var inputFiles: FileCollection
@Suppress("unused")
@Deprecated(
message = "Replaced with 'destinationDirectory'",
replaceWith = ReplaceWith("destinationDirectory")
)
@get:Internal
var outputDir: File
get() = destinationDirectory.get().asFile
set(value) { destinationDirectory.value(projectLayout.dir(providerFactory.provider { value })) }
@get:OutputDirectory
abstract val destinationDirectory: DirectoryProperty
@Classpath
@InputFiles
lateinit var classPath: FileCollection
@Input
var jvmVariant = "FU"
@Input
var verbose = false
@TaskAction
fun transform() {
val cp = classPath.files.map { it.absolutePath }
inputFiles.files.forEach { inputDir ->
AtomicFUTransformer(cp, inputDir, destinationDirectory.get().asFile).let { t ->
t.jvmVariant = jvmVariant.toJvmVariant()
t.verbose = verbose
t.transform()
}
}
}
}
@CacheableTask
abstract class AtomicFUTransformJsTask : ConventionTask() {
@get:Inject
internal abstract val providerFactory: ProviderFactory
@get:Inject
internal abstract val projectLayout: ProjectLayout
@PathSensitive(PathSensitivity.RELATIVE)
@InputFiles
lateinit var inputFiles: FileCollection
@Suppress("unused")
@Deprecated(
message = "Replaced with 'destinationDirectory'",
replaceWith = ReplaceWith("destinationDirectory")
)
@get:Internal
var outputDir: File
get() = destinationDirectory.get().asFile
set(value) { destinationDirectory.value(projectLayout.dir(providerFactory.provider { value })) }
@get:OutputDirectory
abstract val destinationDirectory: DirectoryProperty
@Input
var verbose = false
@TaskAction
fun transform() {
inputFiles.files.forEach { inputDir ->
AtomicFUTransformerJS(inputDir, destinationDirectory.get().asFile).let { t ->
t.verbose = verbose
t.transform()
}
}
}
}