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// Copyright 2000-2021 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
package org.jetbrains.kotlin.idea.compiler.configuration
import com.intellij.openapi.application.ApplicationManager
import com.intellij.openapi.components.PersistentStateComponent
import com.intellij.openapi.project.Project
import com.intellij.openapi.util.Comparing
import com.intellij.openapi.util.JDOMUtil
import com.intellij.util.ReflectionUtil
import com.intellij.util.messages.Topic
import com.intellij.util.xmlb.Accessor
import com.intellij.util.xmlb.SerializationFilterBase
import com.intellij.util.xmlb.XmlSerializer
import org.jdom.Element
import org.jetbrains.kotlin.cli.common.arguments.*
import org.jetbrains.kotlin.idea.syncPublisherWithDisposeCheck
import kotlin.reflect.KClass
abstract class BaseKotlinCompilerSettings<T : Freezable> protected constructor(private val project: Project) :
PersistentStateComponent<Element>, Cloneable {
// Based on com.intellij.util.xmlb.SkipDefaultValuesSerializationFilters
private object DefaultValuesFilter : SerializationFilterBase() {
private val defaultBeans = HashMap<Class<*>, Any>()
private fun createDefaultBean(beanClass: Class<Any>): Any {
return ReflectionUtil.newInstance<Any>(beanClass).apply {
if (this is K2JSCompilerArguments) {
sourceMapPrefix = ""
}
}
}
private fun getDefaultValue(accessor: Accessor, bean: Any): Any? {
if (bean is K2JSCompilerArguments && accessor.name == K2JSCompilerArguments::sourceMapEmbedSources.name) {
return if (bean.sourceMap) K2JsArgumentConstants.SOURCE_MAP_SOURCE_CONTENT_INLINING else null
}
val beanClass = bean.javaClass
val defaultBean = defaultBeans.getOrPut(beanClass) { createDefaultBean(beanClass) }
return accessor.read(defaultBean)
}
override fun accepts(accessor: Accessor, bean: Any, beanValue: Any?): Boolean {
val defValue = getDefaultValue(accessor, bean)
return if (defValue is Element && beanValue is Element) {
!JDOMUtil.areElementsEqual(beanValue, defValue)
} else {
!Comparing.equal(beanValue, defValue)
}
}
}
@Suppress("LeakingThis", "UNCHECKED_CAST")
private var _settings: T = createSettings().frozen() as T
private set(value) {
field = value.frozen() as T
}
var settings: T
get() = _settings
set(value) {
validateNewSettings(value)
_settings = value
ApplicationManager.getApplication().invokeLater {
project.syncPublisherWithDisposeCheck(KotlinCompilerSettingsListener.TOPIC).settingsChanged(value)
}
}
fun update(changer: T.() -> Unit) {
@Suppress("UNCHECKED_CAST")
settings = (settings.unfrozen() as T).apply { changer() }
}
protected fun validateInheritedFieldsUnchanged(settings: T) {
@Suppress("UNCHECKED_CAST")
val inheritedProperties = collectProperties<T>(settings::class as KClass<T>, true)
val defaultInstance = createSettings()
val invalidFields = inheritedProperties.filter { it.get(settings) != it.get(defaultInstance) }
if (invalidFields.isNotEmpty()) {
throw IllegalArgumentException("Following fields are expected to be left unchanged in ${settings.javaClass}: ${invalidFields.joinToString { it.name }}")
}
}
protected open fun validateNewSettings(settings: T) {
}
protected abstract fun createSettings(): T
override fun getState() = XmlSerializer.serialize(_settings, DefaultValuesFilter)
override fun loadState(state: Element) {
_settings = ReflectionUtil.newInstance(_settings.javaClass).apply {
if (this is CommonCompilerArguments) {
freeArgs = mutableListOf()
internalArguments = mutableListOf()
}
XmlSerializer.deserializeInto(this, state)
}
ApplicationManager.getApplication().invokeLater {
project.syncPublisherWithDisposeCheck(KotlinCompilerSettingsListener.TOPIC).settingsChanged(settings)
}
}
public override fun clone(): Any = super.clone()
}
interface KotlinCompilerSettingsListener {
fun <T> settingsChanged(newSettings: T)
companion object {
val TOPIC = Topic.create("KotlinCompilerSettingsListener", KotlinCompilerSettingsListener::class.java)
}
}
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