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/*
* Copyright 2017-2022 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license.
*/
import org.gradle.api.*
import org.gradle.api.file.*
import org.gradle.api.provider.*
import org.gradle.api.tasks.*
import org.gradle.api.tasks.bundling.*
import org.gradle.api.tasks.compile.*
import org.gradle.jvm.toolchain.*
import org.gradle.kotlin.dsl.*
import org.gradle.language.base.plugins.LifecycleBasePlugin.*
import org.gradle.process.*
import org.jetbrains.kotlin.gradle.*
import org.jetbrains.kotlin.gradle.dsl.*
import org.jetbrains.kotlin.gradle.plugin.*
import org.jetbrains.kotlin.gradle.plugin.mpp.*
import org.jetbrains.kotlin.gradle.plugin.mpp.pm20.util.*
import org.jetbrains.kotlin.gradle.targets.jvm.*
import org.jetbrains.kotlin.gradle.tasks.*
import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
import org.jetbrains.kotlin.gradle.tasks.KotlinJvmCompile
import org.jetbrains.kotlin.tooling.core.*
import java.io.*
import kotlin.reflect.*
import kotlin.reflect.full.*
object Java9Modularity {
@JvmStatic
@JvmOverloads
fun Project.configureJava9ModuleInfo(multiRelease: Boolean = true) {
val disableJPMS = this.rootProject.extra.has("disableJPMS")
val ideaActive = System.getProperty("idea.active") == "true"
if (disableJPMS || ideaActive) return
val kotlin = extensions.findByType<KotlinProjectExtension>() ?: return
val jvmTargets = kotlin.targets.filter { it is KotlinJvmTarget || it is KotlinWithJavaTarget<*, *> }
if (jvmTargets.isEmpty()) {
logger.warn("No Kotlin JVM targets found, can't configure compilation of module-info!")
}
jvmTargets.forEach { target ->
val artifactTask = tasks.getByName<Jar>(target.artifactsTaskName) {
if (multiRelease) {
manifest {
attributes("Multi-Release" to true)
}
}
}
target.compilations.forEach { compilation ->
val compileKotlinTask = compilation.compileKotlinTask as KotlinCompile
val defaultSourceSet = compilation.defaultSourceSet
// derive the names of the source set and compile module task
val sourceSetName = defaultSourceSet.name + "Module"
kotlin.sourceSets.create(sourceSetName) {
val sourceFile = this.kotlin.find { it.name == "module-info.java" }
val targetDirectory = compileKotlinTask.destinationDirectory.map {
it.dir("../${it.asFile.name}Module")
}
// only configure the compilation if necessary
if (sourceFile != null) {
// register and wire a task to verify module-info.java content
//
// this will compile the whole sources again with a JPMS-aware target Java version,
// so that the Kotlin compiler can do the necessary verifications
// while compiling with `jdk-release=1.8` those verifications are not done
//
// this task is only going to be executed when running with `check` or explicitly,
// not during normal build operations
val verifyModuleTask = registerVerifyModuleTask(
compileKotlinTask,
sourceFile
)
tasks.named("check") {
dependsOn(verifyModuleTask)
}
// register a new compile module task
val compileModuleTask = registerCompileModuleTask(
compileKotlinTask,
sourceFile,
targetDirectory
)
// add the resulting module descriptor to this target's artifact
artifactTask.from(compileModuleTask.map { it.destinationDirectory }) {
if (multiRelease) {
into("META-INF/versions/9/")
}
}
} else {
logger.info("No module-info.java file found in ${this.kotlin.srcDirs}, can't configure compilation of module-info!")
}
// remove the source set to prevent Gradle warnings
kotlin.sourceSets.remove(this)
}
}
}
}
/**
* Add a Kotlin compile task that compiles `module-info.java` source file and Kotlin sources together,
* the Kotlin compiler will parse and check module dependencies,
* but it currently won't compile to a module-info.class file.
*/
private fun Project.registerVerifyModuleTask(
compileTask: KotlinCompile,
sourceFile: File
): TaskProvider<out KotlinJvmCompile> {
apply<KotlinApiPlugin>()
val verifyModuleTaskName = "verify${compileTask.name.removePrefix("compile").capitalize()}Module"
// work-around for https://youtrack.jetbrains.com/issue/KT-60542
val kotlinApiPlugin = plugins.getPlugin(KotlinApiPlugin::class)
val verifyModuleTask = kotlinApiPlugin.registerKotlinJvmCompileTask(
verifyModuleTaskName,
compileTask.compilerOptions.moduleName.get()
)
verifyModuleTask {
group = VERIFICATION_GROUP
description = "Verify Kotlin sources for JPMS problems"
libraries.from(compileTask.libraries)
source(compileTask.sources)
source(compileTask.javaSources)
// part of work-around for https://youtrack.jetbrains.com/issue/KT-60541
@Suppress("INVISIBLE_MEMBER")
source(compileTask.scriptSources)
source(sourceFile)
destinationDirectory.set(temporaryDir)
multiPlatformEnabled.set(compileTask.multiPlatformEnabled)
compilerOptions {
jvmTarget.set(JvmTarget.JVM_9)
// To support LV override when set in aggregate builds
languageVersion.set(compileTask.compilerOptions.languageVersion)
freeCompilerArgs.addAll(
listOf("-Xjdk-release=9", "-Xsuppress-version-warnings", "-Xexpect-actual-classes")
)
optIn.addAll(compileTask.kotlinOptions.options.optIn)
}
// work-around for https://youtrack.jetbrains.com/issue/KT-60583
inputs.files(
libraries.asFileTree.elements.map { libs ->
libs
.filter { it.asFile.exists() }
.map {
zipTree(it.asFile).filter { it.name == "module-info.class" }
}
}
).withPropertyName("moduleInfosOfLibraries")
this as KotlinCompile
val kotlinPluginVersion = KotlinToolingVersion(kotlinApiPlugin.pluginVersion)
if (kotlinPluginVersion <= KotlinToolingVersion("1.9.255")) {
// part of work-around for https://youtrack.jetbrains.com/issue/KT-60541
@Suppress("UNCHECKED_CAST")
val ownModuleNameProp = (this::class.superclasses.first() as KClass<AbstractKotlinCompile<*>>)
.declaredMemberProperties
.find { it.name == "ownModuleName" }
?.get(this) as? Property<String>
ownModuleNameProp?.set(compileTask.kotlinOptions.moduleName)
}
val taskKotlinLanguageVersion = compilerOptions.languageVersion.orElse(KotlinVersion.DEFAULT)
@OptIn(InternalKotlinGradlePluginApi::class)
if (taskKotlinLanguageVersion.get() < KotlinVersion.KOTLIN_2_0) {
// part of work-around for https://youtrack.jetbrains.com/issue/KT-60541
@Suppress("INVISIBLE_MEMBER")
commonSourceSet.from(compileTask.commonSourceSet)
} else {
multiplatformStructure.refinesEdges.set(compileTask.multiplatformStructure.refinesEdges)
multiplatformStructure.fragments.set(compileTask.multiplatformStructure.fragments)
}
// part of work-around for https://youtrack.jetbrains.com/issue/KT-60541
// and work-around for https://youtrack.jetbrains.com/issue/KT-60582
incremental = false
}
return verifyModuleTask
}
private fun Project.registerCompileModuleTask(
compileTask: KotlinCompile,
sourceFile: File,
targetDirectory: Provider<out Directory>
) = tasks.register("${compileTask.name}Module", JavaCompile::class) {
// Configure the module compile task.
source(sourceFile)
classpath = files()
destinationDirectory.set(targetDirectory)
// use a Java 11 toolchain with release 9 option
// because for some OS / architecture combinations
// there are no Java 9 builds available
javaCompiler.set(
this@registerCompileModuleTask.the<JavaToolchainService>().compilerFor {
languageVersion.set(JavaLanguageVersion.of(11))
}
)
options.release.set(9)
options.compilerArgumentProviders.add(object : CommandLineArgumentProvider {
@get:CompileClasspath
val compileClasspath = compileTask.libraries
@get:CompileClasspath
val compiledClasses = compileTask.destinationDirectory
@get:Input
val moduleName = sourceFile
.readLines()
.single { it.contains("module ") }
.substringAfter("module ")
.substringBefore(' ')
.trim()
override fun asArguments() = mutableListOf(
// Provide the module path to the compiler instead of using a classpath.
// The module path should be the same as the classpath of the compiler.
"--module-path",
compileClasspath.asPath,
"--patch-module",
"$moduleName=${compiledClasses.get()}",
"-Xlint:-requires-transitive-automatic"
)
})
}
}
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