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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.decompiler.stubBuilder
import com.intellij.psi.PsiElement
import com.intellij.psi.stubs.StubElement
import com.intellij.util.io.StringRef
import org.jetbrains.kotlin.builtins.StandardNames
import org.jetbrains.kotlin.descriptors.SourceElement
import org.jetbrains.kotlin.idea.decompiler.stubBuilder.flags.FlagsToModifiers
import org.jetbrains.kotlin.idea.stubindex.KotlinFileStubForIde
import org.jetbrains.kotlin.lexer.KtModifierKeywordToken
import org.jetbrains.kotlin.load.kotlin.JvmPackagePartSource
import org.jetbrains.kotlin.load.kotlin.KotlinJvmBinaryClass
import org.jetbrains.kotlin.load.kotlin.header.KotlinClassHeader
import org.jetbrains.kotlin.metadata.ProtoBuf
import org.jetbrains.kotlin.metadata.deserialization.TypeTable
import org.jetbrains.kotlin.metadata.jvm.deserialization.JvmProtoBufUtil
import org.jetbrains.kotlin.name.ClassId
import org.jetbrains.kotlin.name.FqName
import org.jetbrains.kotlin.name.Name
import org.jetbrains.kotlin.protobuf.MessageLite
import org.jetbrains.kotlin.psi.*
import org.jetbrains.kotlin.psi.stubs.KotlinUserTypeStub
import org.jetbrains.kotlin.psi.stubs.elements.KtStubElementTypes
import org.jetbrains.kotlin.psi.stubs.impl.*
import org.jetbrains.kotlin.resolve.jvm.JvmClassName
import org.jetbrains.kotlin.serialization.deserialization.AnnotatedCallableKind
import org.jetbrains.kotlin.serialization.deserialization.ProtoContainer
fun createTopLevelClassStub(
classId: ClassId,
classProto: ProtoBuf.Class,
source: SourceElement?,
context: ClsStubBuilderContext,
isScript: Boolean
): KotlinFileStubImpl {
val fileStub = createFileStub(classId.packageFqName, isScript)
createClassStub(fileStub, classProto, context.nameResolver, classId, source, context)
return fileStub
}
fun createPackageFacadeStub(
packageProto: ProtoBuf.Package,
packageFqName: FqName,
c: ClsStubBuilderContext
): KotlinFileStubImpl {
val fileStub = KotlinFileStubForIde.forFile(packageFqName, isScript = false)
setupFileStub(fileStub, packageFqName)
createPackageDeclarationsStubs(
fileStub, c, ProtoContainer.Package(packageFqName, c.nameResolver, c.typeTable, source = null), packageProto
)
return fileStub
}
fun createFileFacadeStub(
packageProto: ProtoBuf.Package,
facadeFqName: FqName,
c: ClsStubBuilderContext
): KotlinFileStubImpl {
val packageFqName = facadeFqName.parent()
val fileStub = KotlinFileStubForIde.forFileFacadeStub(facadeFqName)
setupFileStub(fileStub, packageFqName)
val container = ProtoContainer.Package(
packageFqName, c.nameResolver, c.typeTable,
JvmPackagePartSource(JvmClassName.byClassId(ClassId.topLevel(facadeFqName)), null, packageProto, c.nameResolver)
)
createPackageDeclarationsStubs(fileStub, c, container, packageProto)
return fileStub
}
fun createMultifileClassStub(
header: KotlinClassHeader,
partFiles: List<KotlinJvmBinaryClass>,
facadeFqName: FqName,
components: ClsStubBuilderComponents
): KotlinFileStubImpl {
val packageFqName = header.packageName?.let { FqName(it) } ?: facadeFqName.parent()
val partNames = header.data?.asList()?.map { it.substringAfterLast('/') }
val fileStub = KotlinFileStubForIde.forMultifileClassStub(packageFqName, facadeFqName, partNames)
setupFileStub(fileStub, packageFqName)
for (partFile in partFiles) {
val partHeader = partFile.classHeader
val (nameResolver, packageProto) = JvmProtoBufUtil.readPackageDataFrom(partHeader.data!!, partHeader.strings!!)
val partContext = components.createContext(nameResolver, packageFqName, TypeTable(packageProto.typeTable))
val container = ProtoContainer.Package(
packageFqName, partContext.nameResolver, partContext.typeTable,
JvmPackagePartSource(partFile, packageProto, nameResolver)
)
createPackageDeclarationsStubs(fileStub, partContext, container, packageProto)
}
return fileStub
}
fun createIncompatibleAbiVersionFileStub() = createFileStub(FqName.ROOT, isScript = false)
fun createFileStub(packageFqName: FqName, isScript: Boolean): KotlinFileStubImpl {
val fileStub = KotlinFileStubForIde.forFile(packageFqName, isScript)
setupFileStub(fileStub, packageFqName)
return fileStub
}
private fun setupFileStub(fileStub: KotlinFileStubImpl, packageFqName: FqName) {
val packageDirectiveStub = KotlinPlaceHolderStubImpl<KtPackageDirective>(fileStub, KtStubElementTypes.PACKAGE_DIRECTIVE)
createStubForPackageName(packageDirectiveStub, packageFqName)
KotlinPlaceHolderStubImpl<KtImportList>(fileStub, KtStubElementTypes.IMPORT_LIST)
}
fun createStubForPackageName(packageDirectiveStub: KotlinPlaceHolderStubImpl<KtPackageDirective>, packageFqName: FqName) {
val segments = packageFqName.pathSegments()
val iterator = segments.listIterator(segments.size)
fun recCreateStubForPackageName(current: StubElement<out PsiElement>) {
when (iterator.previousIndex()) {
-1 -> return
0 -> {
KotlinNameReferenceExpressionStubImpl(current, iterator.previous().ref())
return
}
else -> {
val lastSegment = iterator.previous()
val receiver = KotlinPlaceHolderStubImpl<KtDotQualifiedExpression>(current, KtStubElementTypes.DOT_QUALIFIED_EXPRESSION)
recCreateStubForPackageName(receiver)
KotlinNameReferenceExpressionStubImpl(receiver, lastSegment.ref())
}
}
}
recCreateStubForPackageName(packageDirectiveStub)
}
fun createStubForTypeName(
typeClassId: ClassId,
parent: StubElement<out PsiElement>,
bindTypeArguments: (KotlinUserTypeStub, Int) -> Unit = { _, _ -> }
): KotlinUserTypeStub {
val substituteWithAny = typeClassId.isLocal
val fqName = if (substituteWithAny) StandardNames.FqNames.any
else typeClassId.asSingleFqName().toUnsafe()
val segments = fqName.pathSegments().asReversed()
assert(segments.isNotEmpty())
fun recCreateStubForType(current: StubElement<out PsiElement>, level: Int): KotlinUserTypeStub {
val lastSegment = segments[level]
val userTypeStub = KotlinUserTypeStubImpl(current)
if (level + 1 < segments.size) {
recCreateStubForType(userTypeStub, level + 1)
}
KotlinNameReferenceExpressionStubImpl(userTypeStub, lastSegment.ref())
if (!substituteWithAny) {
bindTypeArguments(userTypeStub, level)
}
return userTypeStub
}
return recCreateStubForType(parent, level = 0)
}
fun createModifierListStubForDeclaration(
parent: StubElement<out PsiElement>,
flags: Int,
flagsToTranslate: List<FlagsToModifiers> = listOf(),
additionalModifiers: List<KtModifierKeywordToken> = listOf()
): KotlinModifierListStubImpl {
assert(flagsToTranslate.isNotEmpty())
val modifiers = flagsToTranslate.mapNotNull { it.getModifiers(flags) } + additionalModifiers
return createModifierListStub(parent, modifiers)!!
}
fun createModifierListStub(
parent: StubElement<out PsiElement>,
modifiers: Collection<KtModifierKeywordToken>
): KotlinModifierListStubImpl? {
if (modifiers.isEmpty()) {
return null
}
return KotlinModifierListStubImpl(
parent,
ModifierMaskUtils.computeMask { it in modifiers },
KtStubElementTypes.MODIFIER_LIST
)
}
fun createEmptyModifierListStub(parent: KotlinStubBaseImpl<*>): KotlinModifierListStubImpl {
return KotlinModifierListStubImpl(
parent,
ModifierMaskUtils.computeMask { false },
KtStubElementTypes.MODIFIER_LIST
)
}
fun createAnnotationStubs(annotationIds: List<ClassId>, parent: KotlinStubBaseImpl<*>) {
return createTargetedAnnotationStubs(annotationIds.map { ClassIdWithTarget(it, null) }, parent)
}
fun createTargetedAnnotationStubs(
annotationIds: List<ClassIdWithTarget>,
parent: KotlinStubBaseImpl<*>
) {
if (annotationIds.isEmpty()) return
annotationIds.forEach { annotation ->
val (annotationClassId, target) = annotation
val annotationEntryStubImpl = KotlinAnnotationEntryStubImpl(
parent,
shortName = annotationClassId.shortClassName.ref(),
hasValueArguments = false
)
if (target != null) {
KotlinAnnotationUseSiteTargetStubImpl(annotationEntryStubImpl, StringRef.fromString(target.name)!!)
}
val constructorCallee =
KotlinPlaceHolderStubImpl<KtConstructorCalleeExpression>(annotationEntryStubImpl, KtStubElementTypes.CONSTRUCTOR_CALLEE)
val typeReference = KotlinPlaceHolderStubImpl<KtTypeReference>(constructorCallee, KtStubElementTypes.TYPE_REFERENCE)
createStubForTypeName(annotationClassId, typeReference)
}
}
val MessageLite.annotatedCallableKind: AnnotatedCallableKind
get() = when (this) {
is ProtoBuf.Property -> AnnotatedCallableKind.PROPERTY
is ProtoBuf.Function, is ProtoBuf.Constructor -> AnnotatedCallableKind.FUNCTION
else -> throw IllegalStateException("Unsupported message: $this")
}
fun Name.ref() = StringRef.fromString(this.asString())!!
fun FqName.ref() = StringRef.fromString(this.asString())!!
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