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the Kotlin compiler embeddable
/*
* Copyright 2010-2024 JetBrains s.r.o. and Kotlin Programming Language contributors.
* Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
*/
package org.jetbrains.kotlin.cli.jvm
import org.jetbrains.kotlin.cli.common.CLIConfigurationKeys
import org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments
import org.jetbrains.kotlin.cli.common.getLibraryFromHome
import org.jetbrains.kotlin.cli.common.messages.CompilerMessageSeverity.*
import org.jetbrains.kotlin.cli.common.messages.MessageCollector
import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
import org.jetbrains.kotlin.cli.jvm.config.JvmClasspathRoot
import org.jetbrains.kotlin.cli.jvm.config.JvmModulePathRoot
import org.jetbrains.kotlin.cli.jvm.modules.CoreJrtFileSystem
import org.jetbrains.kotlin.config.*
import org.jetbrains.kotlin.utils.KotlinPaths
import org.jetbrains.kotlin.utils.PathUtil
import java.io.File
fun CompilerConfiguration.setupJvmSpecificArguments(arguments: K2JVMCompilerArguments) {
put(JVMConfigurationKeys.INCLUDE_RUNTIME, arguments.includeRuntime)
put(JVMConfigurationKeys.NO_REFLECT, arguments.noReflect)
putIfNotNull(JVMConfigurationKeys.FRIEND_PATHS, arguments.friendPaths?.asList())
val releaseTargetArg = arguments.jdkRelease
val jvmTargetArg = arguments.jvmTarget
if (releaseTargetArg != null) {
val value =
when (releaseTargetArg) {
"1.6" -> 6
"1.7" -> 7
"1.8" -> 8
else -> releaseTargetArg.toIntOrNull()
}
if (value == null || value < 6) {
messageCollector.report(ERROR, "Unknown JDK release version: $releaseTargetArg")
} else {
//don't use release flag if it equals to compilation JDK version
if (value != getJavaVersion() || arguments.jdkHome != null) {
put(JVMConfigurationKeys.JDK_RELEASE, value)
}
if (jvmTargetArg != null && !isCompatibleJvmTargetAndRelease(jvmTargetArg, releaseTargetArg)) {
val suggestion =
if (value < 8) "Please change the value of the 'jvm-target' option to 1.8"
else "Please remove the '-jvm-target' option"
messageCollector.report(
ERROR,
"'-Xjdk-release=$releaseTargetArg' option conflicts with '-jvm-target $jvmTargetArg'. $suggestion"
)
}
}
}
val jvmTargetValue = when (releaseTargetArg) {
"6", "1.6", "7", "1.7" -> {
if (jvmTargetArg == null) {
messageCollector.report(
ERROR,
"'-Xjdk-release=$releaseTargetArg' option requires JVM target explicitly set to 1.8. " +
"Please specify the '-jvm-target' option"
)
}
jvmTargetArg
}
"8" -> "1.8"
null -> jvmTargetArg
else -> releaseTargetArg
}
if (jvmTargetValue != null) {
val jvmTarget = JvmTarget.fromString(jvmTargetValue)
if (jvmTarget != null) {
put(JVMConfigurationKeys.JVM_TARGET, jvmTarget)
if (jvmTarget == JvmTarget.JVM_1_6) {
messageCollector.report(
ERROR,
"JVM target 1.6 is no longer supported. Please migrate to JVM target 1.8 or above"
)
}
} else {
messageCollector.report(
ERROR, "Unknown JVM target version: $jvmTargetValue\n" +
"Supported versions: ${JvmTarget.supportedValues().joinToString { it.description }}"
)
}
}
val jvmTarget = get(JVMConfigurationKeys.JVM_TARGET) ?: JvmTarget.DEFAULT
val stringConcat = arguments.stringConcat
if (stringConcat != null) {
val runtimeStringConcat = JvmStringConcat.fromString(stringConcat)
if (runtimeStringConcat != null) {
put(JVMConfigurationKeys.STRING_CONCAT, runtimeStringConcat)
if (jvmTarget.majorVersion < JvmTarget.JVM_9.majorVersion && runtimeStringConcat != JvmStringConcat.INLINE) {
messageCollector.report(
WARNING,
"`-Xstring-concat=$stringConcat` does nothing with JVM target `${jvmTarget.description}`."
)
}
} else {
messageCollector.report(
ERROR, "Unknown `-Xstring-concat` mode: $stringConcat\n" +
"Supported modes: ${JvmStringConcat.entries.joinToString { it.description }}"
)
}
}
handleClosureGenerationSchemeArgument("-Xsam-conversions", arguments.samConversions, JVMConfigurationKeys.SAM_CONVERSIONS)
handleClosureGenerationSchemeArgument("-Xlambdas", arguments.lambdas, JVMConfigurationKeys.LAMBDAS)
addAll(JVMConfigurationKeys.ADDITIONAL_JAVA_MODULES, arguments.additionalJavaModules?.asList())
}
private fun isCompatibleJvmTargetAndRelease(jvmTarget: String, release: String): Boolean {
if (jvmTarget == "1.8") {
// This is needed to be able to compile stdlib with -jvm-target 1.8 and -Xjdk-release=1.6/1.7.
return release in listOf("6", "1.6", "7", "1.7", "8", "1.8")
}
return jvmTarget == release
}
private fun CompilerConfiguration.handleClosureGenerationSchemeArgument(
flag: String,
value: String?,
key: CompilerConfigurationKey,
) {
if (value == null) return
val parsedValue = JvmClosureGenerationScheme.fromString(value)
if (parsedValue != null) {
put(key, parsedValue)
} else {
messageCollector.report(
ERROR,
"Unknown `$flag` argument: ${value}\n." +
"Supported arguments: ${JvmClosureGenerationScheme.entries.joinToString { it.description }}"
)
}
}
fun CompilerConfiguration.configureJdkHome(arguments: K2JVMCompilerArguments): Boolean {
if (arguments.noJdk) {
put(JVMConfigurationKeys.NO_JDK, true)
if (arguments.jdkHome != null) {
messageCollector.report(STRONG_WARNING, "The '-jdk-home' option is ignored because '-no-jdk' is specified")
}
return true
}
if (arguments.jdkHome != null) {
val jdkHome = File(arguments.jdkHome!!)
if (!jdkHome.exists()) {
messageCollector.report(ERROR, "JDK home directory does not exist: $jdkHome")
return false
}
messageCollector.report(LOGGING, "Using JDK home directory $jdkHome")
put(JVMConfigurationKeys.JDK_HOME, jdkHome)
} else {
configureJdkHomeFromSystemProperty()
}
return true
}
fun CompilerConfiguration.configureJdkHomeFromSystemProperty() {
val javaHome = File(System.getProperty("java.home"))
messageCollector.report(LOGGING, "Using JDK home inferred from java.home: $javaHome")
put(JVMConfigurationKeys.JDK_HOME, javaHome)
}
fun CompilerConfiguration.configureJavaModulesContentRoots(arguments: K2JVMCompilerArguments) {
for (modularRoot in arguments.javaModulePath?.split(File.pathSeparatorChar).orEmpty()) {
add(CLIConfigurationKeys.CONTENT_ROOTS, JvmModulePathRoot(File(modularRoot)))
}
}
fun CompilerConfiguration.configureContentRootsFromClassPath(arguments: K2JVMCompilerArguments) {
for (path in arguments.classpath?.split(File.pathSeparatorChar).orEmpty()) {
add(CLIConfigurationKeys.CONTENT_ROOTS, JvmClasspathRoot(File(path)))
}
}
fun CompilerConfiguration.configureStandardLibs(paths: KotlinPaths?, arguments: K2JVMCompilerArguments) {
configureStandardLibs(
paths,
KotlinPaths::stdlibPath,
KotlinPaths::scriptRuntimePath,
KotlinPaths::reflectPath,
arguments
)
}
fun CompilerConfiguration.configureStandardLibs(
paths: PathProvider?,
stdlibPath: (PathProvider) -> File,
scriptRuntimePath: (PathProvider) -> File,
reflectPath: (PathProvider) -> File,
arguments: K2JVMCompilerArguments
) {
val jdkRelease = get(JVMConfigurationKeys.JDK_RELEASE)
val isModularJava = isModularJava() && (jdkRelease == null || jdkRelease >= 9)
fun addRoot(moduleName: String, libraryName: String, getLibrary: (PathProvider) -> File, noLibraryArgument: String) {
addModularRootIfNotNull(
isModularJava, moduleName,
getLibraryFromHome(paths, getLibrary, libraryName, messageCollector, noLibraryArgument)
)
}
if (!arguments.noStdlib) {
addRoot("kotlin.stdlib", PathUtil.KOTLIN_JAVA_STDLIB_JAR, stdlibPath, "'-no-stdlib'")
addRoot("kotlin.script.runtime", PathUtil.KOTLIN_JAVA_SCRIPT_RUNTIME_JAR, scriptRuntimePath, "'-no-stdlib'")
}
// "-no-stdlib" implies "-no-reflect": otherwise we would be able to transitively read stdlib classes through kotlin-reflect,
// which is likely not what user wants since s/he manually provided "-no-stdlib"
if (!arguments.noReflect && !arguments.noStdlib) {
addRoot("kotlin.reflect", PathUtil.KOTLIN_JAVA_REFLECT_JAR, reflectPath, "'-no-reflect' or '-no-stdlib'")
}
}
fun CompilerConfiguration.isModularJava(): Boolean {
return get(JVMConfigurationKeys.JDK_HOME)?.let {
CoreJrtFileSystem.isModularJdk(it)
} ?: false
}
fun CompilerConfiguration.addModularRootIfNotNull(isModularJava: Boolean, moduleName: String, file: File?) {
when {
file == null -> {
}
isModularJava -> {
add(CLIConfigurationKeys.CONTENT_ROOTS, JvmModulePathRoot(file))
add(JVMConfigurationKeys.ADDITIONAL_JAVA_MODULES, moduleName)
}
else -> add(CLIConfigurationKeys.CONTENT_ROOTS, JvmClasspathRoot(file))
}
}
fun KotlinCoreEnvironment.registerJavacIfNeeded(
arguments: K2JVMCompilerArguments
): Boolean {
if (arguments.useJavac) {
configuration.put(JVMConfigurationKeys.USE_JAVAC, true)
if (arguments.compileJava) {
configuration.put(JVMConfigurationKeys.COMPILE_JAVA, true)
}
return registerJavac(arguments = arguments.javacArguments)
}
return true
}
fun CompilerConfiguration.configureAdvancedJvmOptions(arguments: K2JVMCompilerArguments) {
put(JVMConfigurationKeys.PARAMETERS_METADATA, arguments.javaParameters)
val useOldBackend = arguments.useOldBackend
val useIR = languageVersionSettings.languageVersion.usesK2 || !useOldBackend
messageCollector.report(LOGGING, "Using ${if (useIR) "JVM IR" else "old JVM"} backend")
put(JVMConfigurationKeys.IR, useIR)
val abiStability = JvmAbiStability.fromStringOrNull(arguments.abiStability)
if (arguments.abiStability != null) {
if (abiStability == null) {
messageCollector.report(
ERROR,
"Unknown ABI stability mode: ${arguments.abiStability}, supported modes: ${JvmAbiStability.entries.map { it.description }}"
)
} else if (!useIR && abiStability == JvmAbiStability.UNSTABLE) {
messageCollector.report(ERROR, "-Xabi-stability=unstable is not supported in the old JVM backend")
} else {
put(JVMConfigurationKeys.ABI_STABILITY, abiStability)
}
}
put(JVMConfigurationKeys.DO_NOT_CLEAR_BINDING_CONTEXT, arguments.doNotClearBindingContext)
put(JVMConfigurationKeys.DISABLE_CALL_ASSERTIONS, arguments.noCallAssertions)
put(JVMConfigurationKeys.DISABLE_RECEIVER_ASSERTIONS, arguments.noReceiverAssertions)
put(JVMConfigurationKeys.DISABLE_PARAM_ASSERTIONS, arguments.noParamAssertions)
put(JVMConfigurationKeys.DISABLE_OPTIMIZATION, arguments.noOptimize)
put(JVMConfigurationKeys.EMIT_JVM_TYPE_ANNOTATIONS, arguments.emitJvmTypeAnnotations)
put(JVMConfigurationKeys.NO_RESET_JAR_TIMESTAMPS, arguments.noResetJarTimestamps)
put(JVMConfigurationKeys.NO_UNIFIED_NULL_CHECKS, arguments.noUnifiedNullChecks)
put(JVMConfigurationKeys.NO_SOURCE_DEBUG_EXTENSION, arguments.noSourceDebugExtension)
put(JVMConfigurationKeys.SERIALIZE_IR, JvmSerializeIrMode.fromString(arguments.serializeIr))
put(JVMConfigurationKeys.VALIDATE_BYTECODE, arguments.validateBytecode)
put(JVMConfigurationKeys.LINK_VIA_SIGNATURES, arguments.linkViaSignatures)
put(JVMConfigurationKeys.ENABLE_DEBUG_MODE, arguments.enableDebugMode)
put(JVMConfigurationKeys.NO_NEW_JAVA_ANNOTATION_TARGETS, arguments.noNewJavaAnnotationTargets)
put(JVMConfigurationKeys.OLD_INNER_CLASSES_LOGIC, arguments.oldInnerClassesLogic)
put(JVMConfigurationKeys.ENABLE_IR_INLINER, arguments.enableIrInliner)
put(JVMConfigurationKeys.USE_INLINE_SCOPES_NUMBERS, arguments.useInlineScopesNumbers)
val assertionsMode =
JVMAssertionsMode.fromStringOrNull(arguments.assertionsMode)
if (assertionsMode == null) {
messageCollector.report(
ERROR,
"Unknown assertions mode: ${arguments.assertionsMode}, supported modes: ${JVMAssertionsMode.entries.map { it.description }}"
)
}
put(JVMConfigurationKeys.ASSERTIONS_MODE, assertionsMode ?: JVMAssertionsMode.DEFAULT)
put(JVMConfigurationKeys.USE_TYPE_TABLE, arguments.useTypeTable)
put(JVMConfigurationKeys.USE_PSI_CLASS_FILES_READING, arguments.useOldClassFilesReading)
arguments.useFastJarFileSystem?.let { put(JVMConfigurationKeys.USE_FAST_JAR_FILE_SYSTEM, it) }
if (arguments.useOldClassFilesReading) {
messageCollector.report(INFO, "Using the old java class files reading implementation")
}
put(CLIConfigurationKeys.ALLOW_KOTLIN_PACKAGE, arguments.allowKotlinPackage)
put(CLIConfigurationKeys.RENDER_DIAGNOSTIC_INTERNAL_NAME, arguments.renderInternalDiagnosticNames)
put(JVMConfigurationKeys.USE_OLD_INLINE_CLASSES_MANGLING_SCHEME, arguments.useOldInlineClassesManglingScheme)
put(JVMConfigurationKeys.ENABLE_JVM_PREVIEW, arguments.enableJvmPreview)
if (arguments.enableJvmPreview) {
messageCollector.report(INFO, "Using preview Java language features")
}
val nThreadsRaw = parseBackendThreads(arguments.backendThreads, messageCollector)
val nThreads = if (nThreadsRaw == 0) Runtime.getRuntime().availableProcessors() else nThreadsRaw
if (nThreads > 1) {
messageCollector.report(LOGGING, "Running backend in parallel with $nThreads threads")
}
put(CommonConfigurationKeys.PARALLEL_BACKEND_THREADS, nThreads)
}
private fun parseBackendThreads(stringValue: String, messageCollector: MessageCollector): Int {
val value = stringValue.toIntOrNull()
if (value == null) {
messageCollector.report(ERROR, "Cannot parse -Xbackend-threads value: \"$stringValue\". Please use an integer number")
return 1
}
if (value < 0) {
messageCollector.report(ERROR, "-Xbackend-threads value cannot be negative")
return 1
}
return value
}
fun CompilerConfiguration.configureKlibPaths(arguments: K2JVMCompilerArguments) {
val libraries = arguments.klibLibraries ?: return
put(JVMConfigurationKeys.KLIB_PATHS, libraries.split(File.pathSeparator.toRegex()).filterNot(String::isEmpty))
}
private fun getJavaVersion(): Int =
System.getProperty("java.specification.version")?.substringAfter('.')?.toIntOrNull() ?: 6