Remove obsolete and unused descriptors and utils

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/descriptors/DescriptorUtils.kt

@@ -26,12 +26,23 @@ import org.jetbrains.kotlin.types.TypeProjectionImpl
 import org.jetbrains.kotlin.types.TypeSubstitutor
 import org.jetbrains.kotlin.types.replace
 
+val String.synthesizedName: Name get() = Name.identifier(this.synthesizedString)
+
+val String.synthesizedString: String get() = "\$$this"
+
+val DeclarationDescriptor.propertyIfAccessor: DeclarationDescriptor
+    get() = if (this is PropertyAccessorDescriptor)
+        this.correspondingProperty
+    else this
+
 val CallableDescriptor.isSuspend: Boolean
     get() = this is FunctionDescriptor && isSuspend
 
 /**
  * @return naturally-ordered list of all parameters available inside the function body.
  */
+// Used in Kotlin/Native
+@Suppress("unused")
 val CallableDescriptor.allParameters: List<ParameterDescriptor>
     get() = if (this is ConstructorDescriptor) {
         listOf(this.constructedClass.thisAsReceiverParameter) + explicitParameters
@@ -59,58 +70,17 @@ val CallableDescriptor.explicitParameters: List<ParameterDescriptor>
         return result
     }
 
-fun KotlinType.replace(types: List<KotlinType>) = this.replace(types.map(::TypeProjectionImpl))
-
+// Used in Kotlin/Native
+@Suppress("unused")
 fun FunctionDescriptor.substitute(vararg types: KotlinType): FunctionDescriptor {
     val typeSubstitutor = TypeSubstitutor.create(
-            typeParameters
-                    .withIndex()
-                    .associateBy({ it.value.typeConstructor }, { TypeProjectionImpl(types[it.index]) })
-    )
-    return substitute(typeSubstitutor)!!
-}
-
-fun FunctionDescriptor.substitute(typeArguments: Map<TypeParameterDescriptor, KotlinType>): FunctionDescriptor {
-    val typeSubstitutor = TypeSubstitutor.create(
-            typeParameters.associateBy({ it.typeConstructor }, { TypeProjectionImpl(typeArguments[it]!!) })
-    )
-    return substitute(typeSubstitutor)!!
-}
-
-fun ClassDescriptor.getFunction(name: String, types: List<KotlinType>): FunctionDescriptor {
-    val typeSubstitutor = TypeSubstitutor.create(
-            declaredTypeParameters
-                    .withIndex()
-                    .associateBy({ it.value.typeConstructor }, { TypeProjectionImpl(types[it.index]) })
-    )
-    return unsubstitutedMemberScope
-            .getContributedFunctions(Name.identifier(name), NoLookupLocation.FROM_BACKEND).single().substitute(typeSubstitutor)!!
-}
-
-fun ClassDescriptor.getStaticFunction(name: String, types: List<KotlinType>): FunctionDescriptor {
-    val typeSubstitutor = TypeSubstitutor.create(
-        declaredTypeParameters
+        typeParameters
             .withIndex()
             .associateBy({ it.value.typeConstructor }, { TypeProjectionImpl(types[it.index]) })
     )
-    return staticScope
-        .getContributedFunctions(Name.identifier(name), NoLookupLocation.FROM_BACKEND).single().substitute(typeSubstitutor)!!
+    return substitute(typeSubstitutor)!!
 }
 
-fun ClassDescriptor.getProperty(name: String, types: List<KotlinType>): PropertyDescriptor {
-    val typeSubstitutor = TypeSubstitutor.create(
-        declaredTypeParameters
-            .withIndex()
-            .associateBy({ it.value.typeConstructor }, { TypeProjectionImpl(types[it.index]) })
-    )
-    return unsubstitutedMemberScope
-        .getContributedVariables(
-            Name.identifier(name),
-            NoLookupLocation.FROM_BACKEND
-        ).single().substitute(typeSubstitutor) as PropertyDescriptor
-}
-
-
 val KotlinType.isFunctionOrKFunctionType: Boolean
     get() {
         val kind = constructor.declarationDescriptor?.getFunctionalClassKind()

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/descriptors/KnownDescriptors.kt

@@ -1,151 +0,0 @@
-/*
- * Copyright 2000-2018 JetBrains s.r.o. 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.backend.common.descriptors
-
-import org.jetbrains.kotlin.descriptors.*
-import org.jetbrains.kotlin.descriptors.annotations.Annotations
-import org.jetbrains.kotlin.descriptors.impl.LazyClassReceiverParameterDescriptor
-import org.jetbrains.kotlin.descriptors.impl.PackageFragmentDescriptorImpl
-import org.jetbrains.kotlin.descriptors.impl.TypeParameterDescriptorImpl
-import org.jetbrains.kotlin.name.FqName
-import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameUnsafe
-import org.jetbrains.kotlin.resolve.scopes.MemberScope
-import org.jetbrains.kotlin.storage.LockBasedStorageManager
-import org.jetbrains.kotlin.types.*
-
-open class KnownPackageFragmentDescriptor(moduleDescriptor: ModuleDescriptor, fqName: FqName) :
-        PackageFragmentDescriptorImpl(moduleDescriptor, fqName) {
-    override fun getMemberScope(): MemberScope = MemberScope.Empty
-}
-
-open class KnownClassDescriptor(
-        private val name: Name,
-        private val containingDeclaration: DeclarationDescriptor,
-        private val sourceElement: SourceElement,
-        private val kind: ClassKind,
-        private val modality: Modality,
-        private val visibility: Visibility,
-        override val annotations: Annotations
-) : ClassDescriptor {
-    init {
-        assert(modality != Modality.SEALED) { "Implement getSealedSubclasses() for this class: ${this::class.java}" }
-    }
-
-    private lateinit var typeConstructor: TypeConstructor
-    private lateinit var supertypes: List<KotlinType>
-    private lateinit var defaultType: SimpleType
-    private lateinit var declaredTypeParameters: List<TypeParameterDescriptor>
-
-    private val thisAsReceiverParameter = LazyClassReceiverParameterDescriptor(this)
-
-    fun initialize(declaredTypeParameters: List<TypeParameterDescriptor>, supertypes: List<KotlinType>) {
-        this.declaredTypeParameters = declaredTypeParameters
-        this.supertypes = supertypes
-        this.typeConstructor = ClassTypeConstructorImpl(this, declaredTypeParameters, supertypes, LockBasedStorageManager.NO_LOCKS)
-        this.defaultType = TypeUtils.makeUnsubstitutedType(this, unsubstitutedMemberScope)
-    }
-
-    companion object {
-        fun createClass(
-                name: Name,
-                containingDeclaration: DeclarationDescriptor,
-                supertypes: List<KotlinType>,
-                modality: Modality = Modality.FINAL,
-                visibility: Visibility = Visibilities.PUBLIC,
-                annotations: Annotations = Annotations.EMPTY
-        ) =
-                KnownClassDescriptor(
-                        name, containingDeclaration,
-                        SourceElement.NO_SOURCE, ClassKind.CLASS,
-                        modality, visibility,
-                        annotations
-                ).apply {
-                    initialize(emptyList(), supertypes)
-                }
-
-        private inline fun createClassWithTypeParameters(
-                name: Name,
-                containingDeclaration: DeclarationDescriptor,
-                supertypes: List<KotlinType>,
-                modality: Modality = Modality.FINAL,
-                visibility: Visibility = Visibilities.PUBLIC,
-                annotations: Annotations = Annotations.EMPTY,
-                createTypeParameters: (ClassDescriptor) -> List<TypeParameterDescriptor>
-        ) =
-                KnownClassDescriptor(
-                        name, containingDeclaration,
-                        SourceElement.NO_SOURCE, ClassKind.CLASS,
-                        modality, visibility,
-                        annotations
-                ).apply {
-                    initialize(createTypeParameters(this), supertypes)
-                }
-
-        fun createClassWithTypeParameters(
-                name: Name,
-                containingDeclaration: DeclarationDescriptor,
-                supertypes: List<KotlinType>,
-                typeParameterNames: List<Name>,
-                modality: Modality = Modality.FINAL,
-                visibility: Visibility = Visibilities.PUBLIC,
-                annotations: Annotations = Annotations.EMPTY
-        ) =
-                createClassWithTypeParameters(name, containingDeclaration, supertypes, modality, visibility, annotations) { classDescriptor ->
-                    typeParameterNames.mapIndexed { index, name ->
-                        TypeParameterDescriptorImpl.createWithDefaultBound(
-                                classDescriptor, Annotations.EMPTY, true, Variance.INVARIANT, name, index
-                        )
-                    }
-                }
-    }
-
-    override fun getCompanionObjectDescriptor(): ClassDescriptor? = null
-    override fun getConstructors(): Collection<ClassConstructorDescriptor> = emptyList()
-    override fun getContainingDeclaration(): DeclarationDescriptor = containingDeclaration
-    override fun getDeclaredTypeParameters(): List<TypeParameterDescriptor> = declaredTypeParameters
-    override fun getKind(): ClassKind = kind
-    override fun getSealedSubclasses(): Collection<ClassDescriptor> = emptyList()
-
-    override fun getMemberScope(typeArguments: MutableList<out TypeProjection>): MemberScope = MemberScope.Empty
-    override fun getMemberScope(typeSubstitution: TypeSubstitution): MemberScope = MemberScope.Empty
-    override fun getStaticScope(): MemberScope = MemberScope.Empty
-    override fun getUnsubstitutedInnerClassesScope(): MemberScope = MemberScope.Empty
-    override fun getUnsubstitutedMemberScope(): MemberScope = MemberScope.Empty
-
-    override fun getUnsubstitutedPrimaryConstructor(): ClassConstructorDescriptor? = null
-
-    override fun substitute(substitutor: TypeSubstitutor): ClassDescriptor = error("Class $this can't be substituted")
-
-    override fun getThisAsReceiverParameter(): ReceiverParameterDescriptor = thisAsReceiverParameter
-
-    override fun getModality(): Modality = modality
-    override fun getOriginal(): ClassDescriptor = this
-    override fun getName(): Name = name
-    override fun getVisibility(): Visibility = visibility
-    override fun getSource(): SourceElement = sourceElement
-    override fun getTypeConstructor(): TypeConstructor = typeConstructor
-    override fun getDefaultType(): SimpleType = defaultType
-
-    override fun isCompanionObject(): Boolean = false
-    override fun isData(): Boolean = false
-    override fun isInline(): Boolean = false
-    override fun isInner(): Boolean = false
-    override fun isExpect(): Boolean = false
-    override fun isActual(): Boolean = false
-    override fun isExternal(): Boolean = false
-
-    override fun <R : Any?, D : Any?> accept(visitor: DeclarationDescriptorVisitor<R, D>, data: D): R {
-        return visitor.visitClassDescriptor(this, data)
-    }
-
-    override fun acceptVoid(visitor: DeclarationDescriptorVisitor<Void, Void>) {
-        visitor.visitClassDescriptor(this, null)
-    }
-
-    override fun toString(): String =
-            "KnownClassDescriptor($fqNameUnsafe)"
-}

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/descriptors/utils.kt

@@ -1,72 +0,0 @@
-/*
- * Copyright 2010-2017 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.backend.common.descriptors
-
-import org.jetbrains.kotlin.descriptors.*
-import org.jetbrains.kotlin.incremental.components.NoLookupLocation
-import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedCallableMemberDescriptor
-import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedPropertyDescriptor
-import org.jetbrains.kotlin.types.KotlinType
-
-fun ClassDescriptor?.getter2Descriptor(methodName: Name) = this?.let {
-    this.unsubstitutedMemberScope.getContributedDescriptors { true }
-        .firstOrNull {
-            it.name == methodName
-        }?.let {
-            return@let (it as? PropertyDescriptor)?.getter
-        }
-}
-
-fun ClassDescriptor?.signature2Descriptor(methodName: Name, signature: Array<KotlinType> = emptyArray()) = this?.let {
-    this
-        .unsubstitutedMemberScope
-        .getContributedFunctions(methodName, NoLookupLocation.FROM_BACKEND)
-        .firstOrNull {
-            return@firstOrNull it.valueParameters.size == signature.size
-                    && (signature.isEmpty() || it.valueParameters.any { p ->
-                val index = it.valueParameters.indexOf(p)
-                return@any p.type == signature[index]
-            })
-        }
-}
-
-val String.synthesizedName get() = Name.identifier(this.synthesizedString)
-
-val String.synthesizedString get() = "\$$this"
-
-val DeclarationDescriptor.propertyIfAccessor
-    get() = if (this is PropertyAccessorDescriptor)
-        this.correspondingProperty
-    else this
-
-val CallableMemberDescriptor.propertyIfAccessor
-    get() = if (this is PropertyAccessorDescriptor)
-        this.correspondingProperty
-    else this
-
-val FunctionDescriptor.deserializedPropertyIfAccessor: DeserializedCallableMemberDescriptor
-    get() {
-        val member = this.propertyIfAccessor
-        if (member is DeserializedCallableMemberDescriptor)
-            return member
-        else
-            error("Unexpected deserializable callable descriptor")
-    }
-
-val CallableMemberDescriptor.isDeserializableCallable
-    get () = (this.propertyIfAccessor is DeserializedCallableMemberDescriptor)

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/JsIrBackendContext.kt

@@ -7,7 +7,6 @@ package org.jetbrains.kotlin.ir.backend.js
 
 import org.jetbrains.kotlin.backend.common.CommonBackendContext
 import org.jetbrains.kotlin.backend.common.atMostOne
-import org.jetbrains.kotlin.backend.common.descriptors.KnownPackageFragmentDescriptor
 import org.jetbrains.kotlin.backend.common.ir.Ir
 import org.jetbrains.kotlin.backend.common.ir.Symbols
 import org.jetbrains.kotlin.backend.common.phaser.PhaseConfig
@@ -17,6 +16,7 @@ import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.descriptors.PropertyDescriptor
 import org.jetbrains.kotlin.descriptors.SimpleFunctionDescriptor
+import org.jetbrains.kotlin.descriptors.impl.EmptyPackageFragmentDescriptor
 import org.jetbrains.kotlin.descriptors.impl.ModuleDescriptorImpl
 import org.jetbrains.kotlin.incremental.components.NoLookupLocation
 import org.jetbrains.kotlin.ir.IrElement
@@ -59,7 +59,7 @@ class JsIrBackendContext(
     val packageLevelJsModules = mutableListOf<IrFile>()
     val declarationLevelJsModules = mutableListOf<IrDeclaration>()
 
-    val internalPackageFragmentDescriptor = KnownPackageFragmentDescriptor(builtIns.builtInsModule, FqName("kotlin.js.internal"))
+    val internalPackageFragmentDescriptor = EmptyPackageFragmentDescriptor(builtIns.builtInsModule, FqName("kotlin.js.internal"))
     val implicitDeclarationFile by lazy {
         IrFileImpl(object : SourceManager.FileEntry {
             override val name = "<implicitDeclarations>"

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/descriptors/DefaultImplsClassDescriptor.kt

@@ -1,47 +0,0 @@
-/*
- * 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.backend.jvm.descriptors
-
-import org.jetbrains.kotlin.backend.common.descriptors.KnownClassDescriptor
-import org.jetbrains.kotlin.descriptors.*
-import org.jetbrains.kotlin.descriptors.annotations.Annotations
-import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.resolve.descriptorUtil.module
-
-interface DefaultImplsClassDescriptor : ClassDescriptor {
-    val correspondingInterface: ClassDescriptor
-}
-
-class DefaultImplsClassDescriptorImpl(
-    name: Name,
-    override val correspondingInterface: ClassDescriptor,
-    sourceElement: SourceElement
-) : DefaultImplsClassDescriptor, KnownClassDescriptor(
-    name,
-    correspondingInterface,
-    sourceElement,
-    ClassKind.CLASS,
-    Modality.FINAL,
-    Visibilities.PUBLIC,
-    Annotations.EMPTY
-) {
-    init {
-        initialize(emptyList(), listOf(correspondingInterface.module.builtIns.anyType))
-    }
-
-    override fun isExternal() = false
-}

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/descriptors/IrBuiltIns.kt

@@ -127,7 +127,6 @@ class IrBuiltIns(
 
     val collectionClass = builtIns.collection.toIrSymbol()
 
-    val arrayType = builtIns.array.toIrType(symbolTable = symbolTable)
     val arrayClass = builtIns.array.toIrSymbol()
 
     val throwableType = builtIns.throwable.defaultType.toIrType()

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/types/irTypes.kt

@@ -107,11 +107,6 @@ private fun makeKotlinType(
     return classifier.descriptor.defaultType.replace(newArguments = kotlinTypeArguments).makeNullableAsSpecified(hasQuestionMark)
 }
 
-fun ClassifierDescriptor.toIrType(hasQuestionMark: Boolean = false, symbolTable: SymbolTable? = null): IrType {
-    val symbol = getSymbol(symbolTable)
-    return IrSimpleTypeImpl(defaultType, symbol, hasQuestionMark, listOf(), listOf())
-}
-
 val IrTypeParameter.defaultType: IrType
     get() = IrSimpleTypeImpl(
         symbol,
@@ -155,4 +150,4 @@ private fun ClassifierDescriptor.getSymbol(symbolTable: SymbolTable?): IrClassif
     is ClassDescriptor -> symbolTable?.referenceClass(this) ?: IrClassSymbolImpl(this)
     is TypeParameterDescriptor -> symbolTable?.referenceTypeParameter(this) ?: IrTypeParameterSymbolImpl(this)
     else -> TODO()
-}
+}