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org.jetbrains.kotlin.ir.builders.Scope.kt Maven / Gradle / Ivy
/*
* 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.ir.builders
import org.jetbrains.kotlin.descriptors.*
import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
import org.jetbrains.kotlin.ir.UNDEFINED_OFFSET
import org.jetbrains.kotlin.ir.declarations.IrDeclaration
import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
import org.jetbrains.kotlin.ir.declarations.IrDeclarationParent
import org.jetbrains.kotlin.ir.declarations.IrVariable
import org.jetbrains.kotlin.ir.declarations.impl.IrVariableImpl
import org.jetbrains.kotlin.ir.descriptors.IrTemporaryVariableDescriptor
import org.jetbrains.kotlin.ir.descriptors.IrTemporaryVariableDescriptorImpl
import org.jetbrains.kotlin.ir.expressions.IrExpression
import org.jetbrains.kotlin.ir.symbols.IrSymbol
import org.jetbrains.kotlin.ir.symbols.impl.*
import org.jetbrains.kotlin.ir.types.IrType
import org.jetbrains.kotlin.ir.types.impl.originalKotlinType
import org.jetbrains.kotlin.ir.types.toKotlinType
import org.jetbrains.kotlin.name.Name
import org.jetbrains.kotlin.types.KotlinType
@OptIn(ObsoleteDescriptorBasedAPI::class)
class Scope(val scopeOwnerSymbol: IrSymbol) {
@ObsoleteDescriptorBasedAPI
val scopeOwner: DeclarationDescriptor get() = scopeOwnerSymbol.descriptor
fun getLocalDeclarationParent(): IrDeclarationParent {
if (!scopeOwnerSymbol.isBound) throw AssertionError("Unbound symbol: $scopeOwner")
val scopeOwnerElement = scopeOwnerSymbol.owner
return when (scopeOwnerElement) {
is IrDeclarationParent -> scopeOwnerElement
!is IrDeclaration -> throw AssertionError("Not a declaration: $scopeOwnerElement")
else -> scopeOwnerElement.parent
}
}
@Deprecated("Creates unbound symbol")
constructor(descriptor: DeclarationDescriptor) : this(createSymbolForScopeOwner(descriptor))
private var lastTemporaryIndex: Int = 0
private fun nextTemporaryIndex(): Int = lastTemporaryIndex++
fun inventNameForTemporary(prefix: String = "tmp", nameHint: String? = null): String {
val index = nextTemporaryIndex()
return if (nameHint != null) "$prefix${index}_$nameHint" else "$prefix$index"
}
private fun createDescriptorForTemporaryVariable(
type: KotlinType,
nameHint: String? = null,
isMutable: Boolean = false
): IrTemporaryVariableDescriptor =
IrTemporaryVariableDescriptorImpl(scopeOwner, Name.identifier(getNameForTemporary(nameHint)), type, isMutable)
private fun getNameForTemporary(nameHint: String?): String =
inventNameForTemporary("tmp", nameHint)
fun createTemporaryVariableDeclaration(
irType: IrType,
nameHint: String? = null,
isMutable: Boolean = false,
type: KotlinType? = null,
origin: IrDeclarationOrigin = IrDeclarationOrigin.IR_TEMPORARY_VARIABLE,
startOffset: Int = UNDEFINED_OFFSET,
endOffset: Int = UNDEFINED_OFFSET
): IrVariable {
val originalKotlinType = type ?: irType.toKotlinType()
val descriptor = createDescriptorForTemporaryVariable(originalKotlinType, nameHint, isMutable)
return IrVariableImpl(
startOffset, endOffset, origin, IrVariableSymbolImpl(descriptor), descriptor.name,
irType, isMutable, isConst = false, isLateinit = false
).apply {
parent = getLocalDeclarationParent()
}
}
fun createTemporaryVariable(
irExpression: IrExpression,
nameHint: String? = null,
isMutable: Boolean = false,
type: KotlinType? = null,
origin: IrDeclarationOrigin = IrDeclarationOrigin.IR_TEMPORARY_VARIABLE,
irType: IrType? = null
): IrVariable {
val originalKotlinType = type ?: (irExpression.type.originalKotlinType ?: irExpression.type.toKotlinType())
return createTemporaryVariableDeclaration(
irType ?: irExpression.type,
nameHint, isMutable, originalKotlinType,
origin, irExpression.startOffset, irExpression.endOffset
).apply {
initializer = irExpression
}
}
fun createTemporaryVariableWithGivenDescriptor(
irExpression: IrExpression,
nameHint: String? = null,
isMutable: Boolean = false,
origin: IrDeclarationOrigin = IrDeclarationOrigin.IR_TEMPORARY_VARIABLE,
descriptor: VariableDescriptor
): IrVariable {
return IrVariableImpl(
irExpression.startOffset, irExpression.endOffset, origin,
IrVariableSymbolImpl(descriptor),
Name.identifier(getNameForTemporary(nameHint)),
irExpression.type,
isVar = isMutable,
isConst = false,
isLateinit = false
).also {
it.initializer = irExpression
}
}
}
private fun createSymbolForScopeOwner(descriptor: DeclarationDescriptor) =
when (descriptor) {
is ClassDescriptor -> IrClassSymbolImpl(descriptor)
is ClassConstructorDescriptor -> IrConstructorSymbolImpl(descriptor.original)
is FunctionDescriptor -> IrSimpleFunctionSymbolImpl(descriptor.original)
is PropertyDescriptor -> IrFieldSymbolImpl(descriptor)
else -> throw AssertionError("Unexpected scopeOwner descriptor: $descriptor")
}