org.jetbrains.kotlin.compilerRunner.CompilerRunnerUtil.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2021 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.kotlin.compilerRunner
import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.ERROR
import org.jetbrains.kotlin.cli.common.messages.MessageCollector
import org.jetbrains.kotlin.preloading.ClassPreloadingUtils
import org.jetbrains.kotlin.preloading.Preloader
import org.jetbrains.kotlin.utils.KotlinPaths
import org.jetbrains.kotlin.utils.KotlinPathsFromBaseDirectory
import java.io.File
import java.io.PrintStream
import java.lang.ref.SoftReference
import java.nio.file.Files
import java.nio.file.Paths
object CompilerRunnerUtil {
private var ourClassLoaderRef = SoftReference(null)
internal val jdkToolsJar: File?
get() {
val javaHomePath = System.getProperty("java.home")
if (javaHomePath == null || javaHomePath.isEmpty()) {
return null
}
val javaHome = Paths.get(javaHomePath)
var toolsJar = javaHome.resolve("lib/tools.jar")
if (Files.exists(toolsJar)) {
return toolsJar.toFile()
}
// We might be inside jre.
if (javaHome.fileName?.toString() == "jre") {
toolsJar = javaHome.resolveSibling("lib/tools.jar")
if (Files.exists(toolsJar)) {
return toolsJar.toFile()
}
}
return null
}
@Synchronized
private fun getOrCreateClassLoader(
environment: JpsCompilerEnvironment,
paths: List
): ClassLoader {
var classLoader = ourClassLoaderRef.get()
if (classLoader == null) {
classLoader = ClassPreloadingUtils.preloadClasses(
paths,
Preloader.DEFAULT_CLASS_NUMBER_ESTIMATE,
CompilerRunnerUtil::class.java.classLoader,
environment.classesToLoadByParent
)
ourClassLoaderRef = SoftReference(classLoader)
}
return classLoader!!
}
fun getLibPath(paths: KotlinPaths, messageCollector: MessageCollector): File? {
val libs = paths.libPath
if (libs.exists() && !libs.isFile) return libs
messageCollector.report(
ERROR,
"Broken compiler at '" + libs.absolutePath + "'. Make sure plugin is properly installed", null
)
return null
}
fun invokeExecMethod(
compilerClassName: String,
arguments: Array,
environment: JpsCompilerEnvironment,
out: PrintStream
): Any? = withCompilerClassloader(environment) { classLoader ->
val compiler = Class.forName(compilerClassName, true, classLoader)
val exec = compiler.getMethod(
"execAndOutputXml",
PrintStream::class.java,
Class.forName("org.jetbrains.kotlin.config.Services", true, classLoader),
Array::class.java
)
exec.invoke(compiler.getDeclaredConstructor().newInstance(), out, environment.services, arguments)
}
fun invokeClassesFqNames(
environment: JpsCompilerEnvironment,
files: Set
): Set = withCompilerClassloader(environment) { classLoader ->
val klass = Class.forName("org.jetbrains.kotlin.incremental.parsing.ParseFileUtilsKt", true, classLoader)
val method = klass.getMethod("classesFqNames", Set::class.java)
@Suppress("UNCHECKED_CAST")
method.invoke(klass, files) as? Set
} ?: emptySet()
private fun withCompilerClassloader(
environment: JpsCompilerEnvironment,
fn: (ClassLoader) -> T
): T? {
val libPath = getLibPath(environment.kotlinPaths, environment.messageCollector) ?: return null
val kotlinPaths = KotlinPathsFromBaseDirectory(libPath)
val paths = kotlinPaths.classPath(KotlinPaths.ClassPaths.CompilerWithScripting).toMutableList()
jdkToolsJar?.let { paths.add(it) }
val classLoader = getOrCreateClassLoader(environment, paths)
return fn(classLoader)
}
}