.kotlin.kotlin-compiler.1.3.11.source-code.IrCopy.kt Maven / Gradle / Ivy
/*
* 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
import org.jetbrains.kotlin.ir.IrElement
import org.jetbrains.kotlin.ir.expressions.IrBlock
import org.jetbrains.kotlin.ir.expressions.IrReturn
import org.jetbrains.kotlin.ir.expressions.IrReturnableBlock
import org.jetbrains.kotlin.ir.expressions.impl.IrReturnImpl
import org.jetbrains.kotlin.ir.expressions.impl.IrReturnableBlockImpl
import org.jetbrains.kotlin.ir.symbols.IrReturnableBlockSymbol
import org.jetbrains.kotlin.ir.util.DeepCopyIrTreeWithSymbols
import org.jetbrains.kotlin.ir.util.SymbolRemapper
import org.jetbrains.kotlin.ir.util.TypeRemapper
open class DeepCopyIrTreeWithReturnableBlockSymbols(
symbolRemapper: SymbolRemapper,
typeRemapper: TypeRemapper
) : DeepCopyIrTreeWithSymbols(symbolRemapper, typeRemapper) {
private inline fun T.transform() =
transform(this@DeepCopyIrTreeWithReturnableBlockSymbols, null) as T
private val transformedReturnableBlocks = mutableMapOf()
override fun visitBlock(expression: IrBlock): IrBlock = if (expression is IrReturnableBlock) {
IrReturnableBlockImpl(
expression.startOffset, expression.endOffset,
expression.type,
expression.descriptor,
expression.origin,
expression.sourceFileName
).also {
transformedReturnableBlocks.put(expression, it)
it.statements.addAll(expression.statements.map { it.transform() })
}
} else {
super.visitBlock(expression)
}
override fun visitReturn(expression: IrReturn): IrReturn {
val returnTargetSymbol = expression.returnTargetSymbol
return if (returnTargetSymbol is IrReturnableBlockSymbol) {
IrReturnImpl(
expression.startOffset, expression.endOffset,
expression.type,
transformedReturnableBlocks.getOrElse(returnTargetSymbol.owner) { returnTargetSymbol.owner }.symbol,
expression.value.transform()
)
} else {
super.visitReturn(expression)
}
}
}