Delegated implementations for properties and extension properties.

compiler/testData/ir/irText/classes/delegatedImplementation.kt

@@ -10,9 +10,22 @@ object BaseImpl : IBase {
     override fun String.qux() {}
 }
 
-interface IOther
-fun otherImpl(): IOther = object : IOther {}
+interface IOther {
+    val x: String
+    var y: Int
+    val Byte.z1: Int
+    var Byte.z2: Int
+}
+
+fun otherImpl(x0: String, y0: Int): IOther = object : IOther {
+    override val x: String = x0
+    override var y: Int = y0
+    override val Byte.z1: Int get() = 1
+    override var Byte.z2: Int
+        get() = 2
+        set(value) {}
+}
 
 class Test1 : IBase by BaseImpl
 
-class Test2 : IBase by BaseImpl, IOther by otherImpl()
+class Test2 : IBase by BaseImpl, IOther by otherImpl("", 42)

compiler/testData/ir/irText/classes/delegatedImplementation.txt

@@ -16,7 +16,11 @@ FILE /delegatedImplementation.kt
     FUN public open override /*1*/ fun kotlin.String.qux(): kotlin.Unit
       BLOCK_BODY
   CLASS INTERFACE IOther
-  FUN public fun otherImpl(): IOther
+    PROPERTY public abstract val x: kotlin.String
+    PROPERTY public abstract var y: kotlin.Int
+    PROPERTY public abstract val kotlin.Byte.z1: kotlin.Int
+    PROPERTY public abstract var kotlin.Byte.z2: kotlin.Int
+  FUN public fun otherImpl(/*0*/ x0: kotlin.String, /*1*/ y0: kotlin.Int): IOther
     BLOCK_BODY
       RETURN type=kotlin.Nothing from=otherImpl
         BLOCK type=otherImpl.<no name provided> operator=OBJECT_LITERAL
@@ -24,6 +28,24 @@ FILE /delegatedImplementation.kt
             CONSTRUCTOR public constructor <no name provided>()
               BLOCK_BODY
                 INSTANCE_INITIALIZER_CALL classDescriptor=<no name provided>
+            PROPERTY public open override /*1*/ val x: kotlin.String
+              EXPRESSION_BODY
+                GET_VAR x0 type=kotlin.String operator=null
+            PROPERTY public open override /*1*/ var y: kotlin.Int
+              EXPRESSION_BODY
+                GET_VAR y0 type=kotlin.Int operator=null
+            PROPERTY public open override /*1*/ val kotlin.Byte.z1: kotlin.Int
+              PROPERTY_GETTER public open override /*1*/ fun kotlin.Byte.<get-z1>(): kotlin.Int
+                BLOCK_BODY
+                  RETURN type=kotlin.Nothing from=<get-z1>
+                    CONST Int type=kotlin.Int value='1'
+            PROPERTY public open override /*1*/ var kotlin.Byte.z2: kotlin.Int
+              PROPERTY_GETTER public open override /*1*/ fun kotlin.Byte.<get-z2>(): kotlin.Int
+                BLOCK_BODY
+                  RETURN type=kotlin.Nothing from=<get-z2>
+                    CONST Int type=kotlin.Int value='2'
+              PROPERTY_SETTER public open override /*1*/ fun kotlin.Byte.<set-z2>(/*0*/ value: kotlin.Int): kotlin.Unit
+                BLOCK_BODY
           CALL .<init> type=otherImpl.<no name provided> operator=OBJECT_LITERAL
   CLASS CLASS Test1
     CONSTRUCTOR public constructor Test1()
@@ -74,3 +96,42 @@ FILE /delegatedImplementation.kt
     DELEGATE val `Test2$IOther$delegate`: IOther
       EXPRESSION_BODY
         CALL .otherImpl type=IOther operator=null
+          x0: CONST String type=kotlin.String value=''
+          y0: CONST Int type=kotlin.Int value='42'
+    PROPERTY public open override /*1*/ /*delegation*/ val x: kotlin.String
+      PROPERTY_GETTER public open override /*1*/ /*delegation*/ fun <get-x>(): kotlin.String
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from=<get-x>
+            CALL .<get-x> type=kotlin.String operator=null
+              $this: GET_VAR Test2$IOther$delegate type=IOther operator=null
+    PROPERTY public open override /*1*/ /*delegation*/ var y: kotlin.Int
+      PROPERTY_GETTER public open override /*1*/ /*delegation*/ fun <get-y>(): kotlin.Int
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from=<get-y>
+            CALL .<get-y> type=kotlin.Int operator=null
+              $this: GET_VAR Test2$IOther$delegate type=IOther operator=null
+      PROPERTY_SETTER public open override /*1*/ /*delegation*/ fun <set-y>(/*0*/ <set-?>: kotlin.Int): kotlin.Unit
+        BLOCK_BODY
+          CALL .<set-y> type=kotlin.Unit operator=null
+            $this: GET_VAR Test2$IOther$delegate type=IOther operator=null
+            <set-?>: GET_VAR <set-?> type=kotlin.Int operator=null
+    PROPERTY public open override /*1*/ /*delegation*/ val kotlin.Byte.z1: kotlin.Int
+      PROPERTY_GETTER public open override /*1*/ /*delegation*/ fun kotlin.Byte.<get-z1>(): kotlin.Int
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from=<get-z1>
+            CALL .<get-z1> type=kotlin.Int operator=null
+              $this: GET_VAR Test2$IOther$delegate type=IOther operator=null
+              $receiver: $RECEIVER of: z1 type=kotlin.Byte
+    PROPERTY public open override /*1*/ /*delegation*/ var kotlin.Byte.z2: kotlin.Int
+      PROPERTY_GETTER public open override /*1*/ /*delegation*/ fun kotlin.Byte.<get-z2>(): kotlin.Int
+        BLOCK_BODY
+          RETURN type=kotlin.Nothing from=<get-z2>
+            CALL .<get-z2> type=kotlin.Int operator=null
+              $this: GET_VAR Test2$IOther$delegate type=IOther operator=null
+              $receiver: $RECEIVER of: z2 type=kotlin.Byte
+      PROPERTY_SETTER public open override /*1*/ /*delegation*/ fun kotlin.Byte.<set-z2>(/*0*/ <set-?>: kotlin.Int): kotlin.Unit
+        BLOCK_BODY
+          CALL .<set-z2> type=kotlin.Unit operator=null
+            $this: GET_VAR Test2$IOther$delegate type=IOther operator=null
+            $receiver: $RECEIVER of: z2 type=kotlin.Byte
+            <set-?>: GET_VAR <set-?> type=kotlin.Int operator=null

compiler/testData/ir/irText/classes/delegatedImplementationWithExplicitOverride.kt

@@ -0,0 +1,13 @@
+interface IFooBar {
+    fun foo()
+    fun bar()
+}
+
+object FooBarImpl : IFooBar {
+    override fun foo() {}
+    override fun bar() {}
+}
+
+class C : IFooBar by FooBarImpl {
+    override fun bar() {}
+}

compiler/testData/ir/irText/classes/delegatedImplementationWithExplicitOverride.txt

@@ -0,0 +1,25 @@
+FILE /delegatedImplementationWithExplicitOverride.kt
+  CLASS INTERFACE IFooBar
+    FUN public abstract fun foo(): kotlin.Unit
+    FUN public abstract fun bar(): kotlin.Unit
+  CLASS OBJECT FooBarImpl
+    CONSTRUCTOR private constructor FooBarImpl()
+      BLOCK_BODY
+        INSTANCE_INITIALIZER_CALL classDescriptor=FooBarImpl
+    FUN public open override /*1*/ fun foo(): kotlin.Unit
+      BLOCK_BODY
+    FUN public open override /*1*/ fun bar(): kotlin.Unit
+      BLOCK_BODY
+  CLASS CLASS C
+    CONSTRUCTOR public constructor C()
+      BLOCK_BODY
+        INSTANCE_INITIALIZER_CALL classDescriptor=C
+    DELEGATE val `C$IFooBar$delegate`: FooBarImpl
+      EXPRESSION_BODY
+        GET_OBJECT FooBarImpl type=FooBarImpl
+    FUN public open override /*1*/ /*delegation*/ fun foo(): kotlin.Unit
+      BLOCK_BODY
+        CALL .foo type=kotlin.Unit operator=null
+          $this: GET_VAR C$IFooBar$delegate type=FooBarImpl operator=null
+    FUN public open override /*1*/ fun bar(): kotlin.Unit
+      BLOCK_BODY