Data class members generation.

Builder-style API for desugaring expressions.

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/declarations/IrDeclaration.kt

@@ -42,6 +42,7 @@ enum class IrDeclarationKind {
 
 enum class IrDeclarationOrigin {
     DEFINED,
+    GENERATED_DATA_CLASS_MEMBER,
     LOCAL_FUNCTION_FOR_LAMBDA,
     IR_TEMPORARY_VARIABLE,
 }

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/descriptors/IrBuiltIns.kt

@@ -74,6 +74,4 @@ class IrBuiltIns(val builtIns: KotlinBuiltIns) {
 
     private fun ClassDescriptor.findSingleFunction(name: String): FunctionDescriptor =
             getMemberScope(TypeSubstitution.EMPTY).getContributedFunctions(Name.identifier(name), NoLookupLocation.FROM_BUILTINS).single()
-
-
 }

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/IrGeneralCall.kt

@@ -17,6 +17,7 @@
 package org.jetbrains.kotlin.ir.expressions
 
 import org.jetbrains.kotlin.descriptors.CallableDescriptor
+import org.jetbrains.kotlin.descriptors.ValueParameterDescriptor
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.assertCast
 import org.jetbrains.kotlin.ir.assertDetached
@@ -34,6 +35,20 @@ interface IrGeneralCall : IrMemberAccessExpression {
     fun removeArgument(index: Int)
 }
 
+fun <T : IrGeneralCall> T.putArguments(arguments: List<IrExpression>): T {
+    arguments.forEachIndexed { i, irArgument ->
+        putArgument(i, irArgument)
+    }
+    return this
+}
+
+inline fun <T : IrGeneralCall> T.mapValueParameters(transform: (ValueParameterDescriptor) -> IrExpression): T {
+    descriptor.valueParameters.forEach {
+        putArgument(it.index, transform(it))
+    }
+    return this
+}
+
 abstract class IrGeneralCallBase(
         startOffset: Int,
         endOffset: Int,

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/IrThisReference.kt

@@ -17,6 +17,7 @@
 package org.jetbrains.kotlin.ir.expressions
 
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.descriptors.ReceiverParameterDescriptor
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
 import org.jetbrains.kotlin.types.KotlinType
 
@@ -25,6 +26,9 @@ interface IrThisReference : IrExpression, IrExpressionWithCopy {
     override fun copy(): IrThisReference
 }
 
+val IrThisReference.receiverParameter: ReceiverParameterDescriptor
+    get() = classDescriptor.thisAsReceiverParameter
+
 class IrThisReferenceImpl(
         startOffset: Int,
         endOffset: Int,
@@ -36,5 +40,4 @@ class IrThisReferenceImpl(
 
     override fun copy(): IrThisReference =
             IrThisReferenceImpl(startOffset, endOffset, type, classDescriptor)
-
 }

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/IrVariableAccessExpression.kt

@@ -19,7 +19,7 @@ package org.jetbrains.kotlin.ir.expressions
 import org.jetbrains.kotlin.descriptors.VariableDescriptor
 import org.jetbrains.kotlin.ir.*
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
-import org.jetbrains.kotlin.types.KotlinType
+import org.jetbrains.kotlin.resolve.descriptorUtil.builtIns
 
 interface IrVariableAccessExpression : IrDeclarationReference {
     override val descriptor: VariableDescriptor
@@ -50,18 +50,16 @@ class IrGetVariableImpl(
 class IrSetVariableImpl(
         startOffset: Int,
         endOffset: Int,
-        type: KotlinType,
         override val descriptor: VariableDescriptor,
         override val operator: IrOperator?
-) : IrExpressionBase(startOffset, endOffset, type), IrSetVariable {
+) : IrExpressionBase(startOffset, endOffset, descriptor.builtIns.unitType), IrSetVariable {
     constructor(
             startOffset: Int,
             endOffset: Int,
-            type: KotlinType,
             descriptor: VariableDescriptor,
             value: IrExpression,
             operator: IrOperator?
-    ) : this(startOffset, endOffset, type, descriptor, operator) {
+    ) : this(startOffset, endOffset, descriptor, operator) {
         this.value = value
     }