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Make ForLoopsLowering a BodyLoweringPass

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This commit is contained in:
Anton Bannykh
2019-12-23 18:42:23 +03:00
parent 0d1c6e08c3
commit 908c23cb48
1 changed files with 9 additions and 9 deletions
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compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/loops/ForLoopsLowering.kt
+9 -9
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@@ -5,6 +5,7 @@
package org.jetbrains.kotlin.backend.common.lower.loops
import org.jetbrains.kotlin.backend.common.BodyLoweringPass
import org.jetbrains.kotlin.backend.common.CommonBackendContext
import org.jetbrains.kotlin.backend.common.FileLoweringPass
import org.jetbrains.kotlin.backend.common.IrElementTransformerVoidWithContext
@@ -12,9 +13,7 @@ import org.jetbrains.kotlin.backend.common.lower.createIrBuilder
import org.jetbrains.kotlin.backend.common.phaser.makeIrFilePhase
import org.jetbrains.kotlin.ir.IrElement
import org.jetbrains.kotlin.ir.IrStatement
import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
import org.jetbrains.kotlin.ir.declarations.IrFile
import org.jetbrains.kotlin.ir.declarations.IrVariable
import org.jetbrains.kotlin.ir.declarations.*
import org.jetbrains.kotlin.ir.expressions.*
import org.jetbrains.kotlin.ir.expressions.impl.IrCompositeImpl
import org.jetbrains.kotlin.ir.util.dump
@@ -96,15 +95,15 @@ val forLoopsPhase = makeIrFilePhase(
* }
* ```
*/
class ForLoopsLowering(val context: CommonBackendContext) : FileLoweringPass {
class ForLoopsLowering(val context: CommonBackendContext) : BodyLoweringPass {
override fun lower(irFile: IrFile) {
override fun lower(irBody: IrBody, container: IrDeclaration) {
val oldLoopToNewLoop = mutableMapOf<IrLoop, IrLoop>()
val transformer = RangeLoopTransformer(context, oldLoopToNewLoop)
irFile.transformChildrenVoid(transformer)
val transformer = RangeLoopTransformer(context, container as IrSymbolOwner, oldLoopToNewLoop)
irBody.transformChildrenVoid(transformer)
// Update references in break/continue.
irFile.transformChildrenVoid(object : IrElementTransformerVoid() {
irBody.transformChildrenVoid(object : IrElementTransformerVoid() {
override fun visitBreakContinue(jump: IrBreakContinue): IrExpression {
oldLoopToNewLoop[jump.loop]?.let { jump.loop = it }
return jump
@@ -115,6 +114,7 @@ class ForLoopsLowering(val context: CommonBackendContext) : FileLoweringPass {
private class RangeLoopTransformer(
val context: CommonBackendContext,
val container: IrSymbolOwner,
val oldLoopToNewLoop: MutableMap<IrLoop, IrLoop>
) : IrElementTransformerVoidWithContext() {
@@ -122,7 +122,7 @@ private class RangeLoopTransformer(
private val headerInfoBuilder = DefaultHeaderInfoBuilder(context, this::getScopeOwnerSymbol)
private val headerProcessor = HeaderProcessor(context, headerInfoBuilder, this::getScopeOwnerSymbol)
fun getScopeOwnerSymbol() = currentScope!!.scope.scopeOwnerSymbol
fun getScopeOwnerSymbol() = currentScope?.scope?.scopeOwnerSymbol ?: container.symbol
override fun visitBlock(expression: IrBlock): IrExpression {
// LoopExpressionGenerator in psi2ir lowers `for (loopVar in <someIterable>) { // Loop body }` into an IrBlock with origin FOR_LOOP.