org.jetbrains.kotlin.backend.jvm.lower.ClassLowerWithContext.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.backend.jvm.lower
import org.jetbrains.kotlin.backend.common.FileLoweringPass
import org.jetbrains.kotlin.codegen.descriptors.FileClassDescriptor
import org.jetbrains.kotlin.descriptors.ClassDescriptor
import org.jetbrains.kotlin.ir.IrStatement
import org.jetbrains.kotlin.ir.declarations.IrClass
import org.jetbrains.kotlin.ir.declarations.IrFile
import org.jetbrains.kotlin.ir.visitors.IrElementTransformer
class IrClassContext(val irClass: IrClass, val parent: IrClassContext?)
abstract class ClassLowerWithContext : FileLoweringPass, IrElementTransformer {
private val companion2Context = mapOf()
private val irClass2Context = hashMapOf()
override fun lower(irFile: IrFile) {
val packageIr = irFile.declarations.singleOrNull { it.descriptor is FileClassDescriptor }
if (packageIr != null) {
visitClass(packageIr as IrClass, null)
irFile.declarations.filterNot { it == packageIr }.forEach { it.accept(this, irClass2Context[packageIr]!!) }
} else {
irFile.accept(this, null)
}
}
override fun visitClass(declaration: IrClass, data: IrClassContext?): IrStatement {
val context = IrClassContext(declaration, data)
irClass2Context.put(declaration, context)
lowerBefore(declaration, context)
val clazz = super.visitClass(declaration, context)
lower(declaration, context)
return clazz
}
open fun lowerBefore(irClass: IrClass, data: IrClassContext) {}
abstract fun lower(irCLass: IrClass, data: IrClassContext)
fun findCompanionFor(irClass: IrClass, descriptor: ClassDescriptor): IrClassContext {
val companion = companion2Context[descriptor] ?: throw RuntimeException("Can't find companion object for $irClass by $descriptor")
assert(irClass == companion.parent?.irClass) {"Wrong companion object: $irClass != ${companion.parent?.irClass}"}
return companion
}
}