org.jetbrains.kotlin.ir.backend.js.lower.JsSingleAbstractMethodLowering.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
* 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.ir.backend.js.lower
import org.jetbrains.kotlin.backend.common.BodyLoweringPass
import org.jetbrains.kotlin.backend.common.lower.SingleAbstractMethodLowering
import org.jetbrains.kotlin.backend.common.ScopeWithIr
import org.jetbrains.kotlin.descriptors.DescriptorVisibilities
import org.jetbrains.kotlin.descriptors.DescriptorVisibility
import org.jetbrains.kotlin.ir.backend.js.JsIrBackendContext
import org.jetbrains.kotlin.ir.declarations.*
import org.jetbrains.kotlin.ir.expressions.IrBody
import org.jetbrains.kotlin.ir.symbols.IrSymbol
import org.jetbrains.kotlin.ir.expressions.IrTypeOperatorCall
import org.jetbrains.kotlin.ir.types.IrType
import org.jetbrains.kotlin.ir.types.classOrNull
import org.jetbrains.kotlin.ir.types.defaultType
import org.jetbrains.kotlin.ir.util.file
import org.jetbrains.kotlin.ir.util.parentClassOrNull
import org.jetbrains.kotlin.ir.util.render
class JsSingleAbstractMethodLowering(context: JsIrBackendContext) : SingleAbstractMethodLowering(context), BodyLoweringPass {
override fun getWrapperVisibility(expression: IrTypeOperatorCall, scopes: List): DescriptorVisibility {
return DescriptorVisibilities.PRIVATE
}
override val IrType.needEqualsHashCodeMethods get() = false
private var enclosingBodyContainer: IrDeclaration? = null
override fun lower(irFile: IrFile) {
super.lower(irFile)
}
override fun lower(irBody: IrBody, container: IrDeclaration) {
cachedImplementations.clear()
inlineCachedImplementations.clear()
enclosingContainer = container.parentClassOrNull ?: container.file
enclosingBodyContainer = container
irBody.transformChildrenVoid()
for (wrapper in cachedImplementations.values + inlineCachedImplementations.values) {
val parentClass = wrapper.parent as IrDeclarationContainer
stageController.unrestrictDeclarationListsAccess {
parentClass.declarations += wrapper
}
}
}
override fun currentScopeSymbol(): IrSymbol? {
return super.currentScopeSymbol() ?: (enclosingBodyContainer as? IrSymbolOwner)?.symbol
}
override fun getSuperTypeForWrapper(typeOperand: IrType): IrType {
// FE doesn't allow type parameters for now.
// And since there is a to-do in common SingleAbstractMethodLowering (at function visitTypeOperator),
// we don't have to be more saint than a pope here.
return typeOperand.classOrNull?.defaultType ?: error("Unsupported SAM conversion: ${typeOperand.render()}")
}
}