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/*
* Copyright 2010-2016 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.asJava.builder
import com.intellij.openapi.project.Project
import com.intellij.psi.PsiFile
import com.intellij.psi.impl.java.stubs.PsiJavaFileStub
import com.intellij.psi.search.GlobalSearchScope
import com.intellij.psi.util.CachedValueProvider
import com.intellij.psi.util.PsiModificationTracker
import com.intellij.psi.util.PsiTreeUtil
import org.jetbrains.kotlin.asJava.LightClassGenerationSupport
import org.jetbrains.kotlin.asJava.classes.getOutermostClassOrObject
import org.jetbrains.kotlin.codegen.CompilationErrorHandler
import org.jetbrains.kotlin.codegen.state.GenerationState
import org.jetbrains.kotlin.fileClasses.NoResolveFileClassesProvider
import org.jetbrains.kotlin.fileClasses.getFileClassType
import org.jetbrains.kotlin.name.FqName
import org.jetbrains.kotlin.psi.KtClassOrObject
import org.jetbrains.kotlin.psi.KtFile
import org.jetbrains.kotlin.psi.KtPsiUtil
import org.jetbrains.kotlin.psi.KtScript
import org.jetbrains.kotlin.psi.psiUtil.isAncestor
class LightClassDataProviderForClassOrObject(
private val classOrObject: KtClassOrObject
) : CachedValueProvider {
private fun computeLightClassData(): LightClassDataHolder.ForClass {
val file = classOrObject.containingKtFile
val packageFqName = file.packageFqName
return LightClassGenerationSupport.getInstance(classOrObject.project).createDataHolderForClass(classOrObject) {
constructionContext ->
buildLightClass(packageFqName, listOf(file), ClassFilterForClassOrObject(classOrObject), constructionContext) {
state, files ->
val packageCodegen = state.factory.forPackage(packageFqName, files)
val packagePartType = state.fileClassesProvider.getFileClassType(file)
val context = state.rootContext.intoPackagePart(packageCodegen.packageFragment, packagePartType, file)
packageCodegen.generateClassOrObject(getOutermostClassOrObject(classOrObject), context)
state.factory.done()
}
}
}
override fun compute(): CachedValueProvider.Result? {
return CachedValueProvider.Result.create(
computeLightClassData(),
if (classOrObject.isLocal()) PsiModificationTracker.MODIFICATION_COUNT else PsiModificationTracker.OUT_OF_CODE_BLOCK_MODIFICATION_COUNT
)
}
override fun toString(): String {
return this::class.java.name + " for " + classOrObject.name
}
}
sealed class LightClassDataProviderForFileFacade constructor(
protected val project: Project, protected val facadeFqName: FqName
) : CachedValueProvider {
abstract fun findFiles(): Collection
private fun computeLightClassData(files: Collection): LightClassDataHolder.ForFacade {
return LightClassGenerationSupport.getInstance(project).createDataHolderForFacade(files) {
constructionContext ->
buildLightClass(facadeFqName.parent(), files, ClassFilterForFacade, constructionContext) generate@ {
state, files ->
val representativeFile = files.first()
val fileClassInfo = NoResolveFileClassesProvider.getFileClassInfo(representativeFile)
if (!fileClassInfo.withJvmMultifileClass) {
val codegen = state.factory.forPackage(representativeFile.packageFqName, files)
codegen.generate(CompilationErrorHandler.THROW_EXCEPTION)
state.factory.done()
return@generate
}
val codegen = state.factory.forMultifileClass(facadeFqName, files)
codegen.generate(CompilationErrorHandler.THROW_EXCEPTION)
state.factory.done()
}
}
}
override fun compute(): CachedValueProvider.Result? {
val files = findFiles()
if (files.isEmpty()) return null
return CachedValueProvider.Result.create(
computeLightClassData(files),
PsiModificationTracker.OUT_OF_CODE_BLOCK_MODIFICATION_COUNT
)
}
override fun toString(): String {
return this::class.java.name + " for $facadeFqName"
}
// create delegate by relevant files in project source using LightClassGenerationSupport
class ByProjectSource(
project: Project,
facadeFqName: FqName,
private val searchScope: GlobalSearchScope
) : LightClassDataProviderForFileFacade(project, facadeFqName) {
override fun findFiles() = LightClassGenerationSupport.getInstance(project).findFilesForFacade(facadeFqName, searchScope)
}
// create delegate by single file
class ByFile(
project: Project,
facadeFqName: FqName,
private val file: KtFile
) : LightClassDataProviderForFileFacade(project, facadeFqName) {
override fun findFiles() = listOf(file)
}
}
interface StubComputationTracker {
fun onStubComputed(javaFileStub: PsiJavaFileStub, context: LightClassConstructionContext)
}
private class ClassFilterForClassOrObject(private val classOrObject: KtClassOrObject) : GenerationState.GenerateClassFilter() {
override fun shouldGeneratePackagePart(ktFile: KtFile) = true
override fun shouldAnnotateClass(processingClassOrObject: KtClassOrObject) = shouldGenerateClass(processingClassOrObject)
override fun shouldGenerateClassMembers(processingClassOrObject: KtClassOrObject): Boolean {
if (classOrObject === processingClassOrObject) return true
// process all children
if (classOrObject.isAncestor(processingClassOrObject, true)) {
return true
}
// Local classes should be process by CodegenAnnotatingVisitor to
// decide what class they should be placed in.
//
// Example:
// class A
// fun foo() {
// trait Z: A {}
// fun bar() {
// class O2: Z {}
// }
// }
// TODO: current method will process local classes in irrelevant declarations, it should be fixed.
// We generate all enclosing classes
if (classOrObject.isLocal && processingClassOrObject.isLocal) {
val commonParent = PsiTreeUtil.findCommonParent(classOrObject, processingClassOrObject)
return commonParent != null && commonParent !is PsiFile
}
return false
}
override fun shouldGenerateClass(processingClassOrObject: KtClassOrObject)
// generate outer classes but not their members
= shouldGenerateClassMembers(processingClassOrObject) || processingClassOrObject.isAncestor(classOrObject, true)
override fun shouldGenerateScript(script: KtScript) = PsiTreeUtil.isAncestor(script, classOrObject, false)
}
object ClassFilterForFacade : GenerationState.GenerateClassFilter() {
override fun shouldAnnotateClass(processingClassOrObject: KtClassOrObject) = shouldGenerateClass(processingClassOrObject)
override fun shouldGenerateClass(processingClassOrObject: KtClassOrObject) = KtPsiUtil.isLocal(processingClassOrObject)
override fun shouldGeneratePackagePart(ktFile: KtFile) = true
override fun shouldGenerateScript(script: KtScript) = false
}
