Fix tests: "infix modifier required" and "operator modifier required" errors

compiler/testData/codegen/box/arrays/collectionAssignGetMultiIndex.kt

@@ -1,7 +1,7 @@
 import java.util.ArrayList
 
-fun ArrayList<String>.get(index1: Int, index2: Int) = this[index1 + index2]
+operator fun ArrayList<String>.get(index1: Int, index2: Int) = this[index1 + index2]
-fun ArrayList<String>.set(index1: Int, index2: Int, elem: String) {
+operator fun ArrayList<String>.set(index1: Int, index2: Int, elem: String) {
     this[index1 + index2] = elem
 }
 

compiler/testData/codegen/box/arrays/collectionGetMultiIndex.kt

@@ -1,7 +1,7 @@
 import java.util.ArrayList
 
-fun ArrayList<String>.get(index1: Int, index2: Int) = this[index1 + index2]
+operator fun ArrayList<String>.get(index1: Int, index2: Int) = this[index1 + index2]
-fun ArrayList<String>.set(index1: Int, index2: Int, elem: String) {
+operator fun ArrayList<String>.set(index1: Int, index2: Int, elem: String) {
     this[index1 + index2] = elem
 }
 

compiler/testData/codegen/box/arrays/hashMap.kt

@@ -1,6 +1,6 @@
 import java.util.HashMap
 
-fun HashMap<String, Int?>.set(index: String, elem: Int?) {
+operator fun HashMap<String, Int?>.set(index: String, elem: Int?) {
     this.put(index, elem)
 }
 

compiler/testData/codegen/box/arrays/kt238.kt

@@ -43,16 +43,16 @@ fun box() : String {
 }
 
 class StrangeArray<T>(size: Int, private var defaultValue: T) {
-    fun get(index: Int): T = defaultValue
+    operator fun get(index: Int): T = defaultValue
-    fun set(index: Int, v: T) {
+    operator fun set(index: Int, v: T) {
         defaultValue = v
     }
 }
 
 class StrangeIntArray(size: Int) {
     private var defaultValue = 0
-    fun get(index: Int): Int = defaultValue
+    operator fun get(index: Int): Int = defaultValue
-    fun set(index: Int, v: Int) {
+    operator fun set(index: Int, v: Int) {
         defaultValue = v
     }
 }

compiler/testData/codegen/box/arrays/kt4348.kt

@@ -1,8 +1,8 @@
-fun String.get(vararg value: Any) : String {
+operator fun String.get(vararg value: Any) : String {
     return if (value[0] == 44 && value[1] == "example") "OK" else "fail"
 }
 
-fun Int.get(vararg value: Any) : Int {
+operator fun Int.get(vararg value: Any) : Int {
     return if (value[0] == 44 && value[1] == "example") 1 else 0
 }
 fun main(args: Array<String>) {

compiler/testData/codegen/box/arrays/kt950.kt

@@ -1,6 +1,6 @@
 import java.util.*
 
-fun <K, V> MutableMap<K, V>.set(k : K, v : V) = put(k, v)
+operator fun <K, V> MutableMap<K, V>.set(k : K, v : V) = put(k, v)
 
 fun box() : String {
     val map = HashMap<String,String>()

compiler/testData/codegen/box/arrays/longAsIndex.kt

@@ -1,5 +1,5 @@
-fun IntArray.set(index: Long, elem: Int) { this[index.toInt()] = elem }
+operator fun IntArray.set(index: Long, elem: Int) { this[index.toInt()] = elem }
-fun IntArray.get(index: Long) = this[index.toInt()]
+operator fun IntArray.get(index: Long) = this[index.toInt()]
 
 fun box(): String {
     var l = IntArray(1)

compiler/testData/codegen/box/binaryOp/infixCall.kt

@@ -1,21 +0,0 @@
-fun box(): String {
-    val a1: Byte = 1 plus 1
-    val a2: Short = 1 plus 1
-    val a3: Int = 1 plus 1
-    val a4: Long = 1 plus 1
-    val a5: Double = 1.0 plus 1
-    val a6: Float = 1f plus 1
-    val a7: Char = 'A' plus 1
-    val a8: Int = 'B' minus 'A'
-
-    if (a1 != 2.toByte()) return "fail 1"
-    if (a2 != 2.toShort()) return "fail 2"
-    if (a3 != 2) return "fail 3"
-    if (a4 != 2L) return "fail 4"
-    if (a5 != 2.0) return "fail 5"
-    if (a6 != 2f) return "fail 6"
-    if (a7 != 'B') return "fail 7"
-    if (a8 != 1) return "fail 8"
-
-    return "OK"
-}

compiler/testData/codegen/box/binaryOp/infixCallAny.kt

@@ -1,21 +0,0 @@
-fun box(): String {
-    val a1: Any = 1.toByte() plus 1
-    val a2: Any = 1.toShort() plus 1
-    val a3: Any = 1 plus 1
-    val a4: Any = 1L plus 1
-    val a5: Any = 1.0 plus 1
-    val a6: Any = 1f plus 1
-    val a7: Any = 'A' plus 1
-    val a8: Any = 'B' minus 'A'
-
-    if (a1 !is Int || a1 != 2) return "fail 1"
-    if (a2 !is Int || a2 != 2) return "fail 2"
-    if (a3 !is Int || a3 != 2) return "fail 3"
-    if (a4 !is Long || a4 != 2L) return "fail 4"
-    if (a5 !is Double || a5 != 2.0) return "fail 5"
-    if (a6 !is Float || a6 != 2f) return "fail 6"
-    if (a7 !is Char || a7 != 'B') return "fail 7"
-    if (a8 !is Int || a8 != 1) return "fail 8"
-
-    return "OK"
-}

compiler/testData/codegen/box/binaryOp/infixCallNullable.kt

@@ -1,21 +0,0 @@
-fun box(): String {
-    val a1: Byte? = 1 plus 1
-    val a2: Short? = 1 plus 1
-    val a3: Int? = 1 plus 1
-    val a4: Long? = 1 plus 1
-    val a5: Double? = 1.0 plus 1
-    val a6: Float? = 1f plus 1
-    val a7: Char? = 'A' plus 1
-    val a8: Int? = 'B' minus 'A'
-
-    if (a1!! != 2.toByte()) return "fail 1"
-    if (a2!! != 2.toShort()) return "fail 2"
-    if (a3!! != 2) return "fail 3"
-    if (a4!! != 2L) return "fail 4"
-    if (a5!! != 2.0) return "fail 5"
-    if (a6!! != 2f) return "fail 6"
-    if (a7!! != 'B') return "fail 7"
-    if (a8!! != 1) return "fail 8"
-
-    return "OK"
-}

compiler/testData/codegen/box/casts/as.kt

@@ -4,5 +4,5 @@ fun box(): String {
 	val r = object : Runnable {
 		override fun run() {}
 	}
-	return if (foo(r) identityEquals r) "OK" else "Fail"
+	return if (foo(r).identityEquals(r)) "OK" else "Fail"
 }

compiler/testData/codegen/box/casts/asSafe.kt

@@ -4,5 +4,5 @@ fun box(): String {
 	val r = object : Runnable {
 		override fun run() {}
 	}
-	return if (foo(r) identityEquals r) "OK" else "Fail"
+	return if (foo(r).identityEquals(r)) "OK" else "Fail"
 }

compiler/testData/codegen/box/classes/kt1891.kt

@@ -1,9 +1,9 @@
 class MyList<T>() {
     var value: T? = null
 
-    fun get(index: Int): T = value!!
+    operator fun get(index: Int): T = value!!
 
-    fun set(index: Int, value: T) { this.value = value }
+    operator fun set(index: Int, value: T) { this.value = value }
 }
 
 fun box(): String {

compiler/testData/codegen/box/classes/kt2711.kt

@@ -1,9 +1,9 @@
 class IntRange {
-    fun contains(a: Int) = (1..2).contains(a)
+    operator fun contains(a: Int) = (1..2).contains(a)
 }
 
 class C() {
-    fun rangeTo(i: Int) = IntRange()
+    operator fun rangeTo(i: Int) = IntRange()
 }
 
 

compiler/testData/codegen/box/classes/kt504.kt

@@ -1,7 +1,7 @@
 import java.util.HashMap
 import java.io.*
 
-fun <K, V> MutableMap<K, V>.set(key : K, value : V) = put(key, value)
+operator fun <K, V> MutableMap<K, V>.set(key : K, value : V) = put(key, value)
 
 fun box() : String {
 

compiler/testData/codegen/box/classes/kt723.kt

@@ -1,4 +1,4 @@
-fun Int?.inc() : Int { if (this != null) return this.inc() else throw NullPointerException() }
+operator fun Int?.inc() : Int { if (this != null) return this.inc() else throw NullPointerException() }
 
 public fun box() : String {
     var i : Int? = 10

compiler/testData/codegen/box/classes/kt725.kt

@@ -1,4 +1,4 @@
-fun Int?.inc() = this!!.inc()
+operator fun Int?.inc() = this!!.inc()
 
 public fun box() : String {
     var i : Int? = 10

compiler/testData/codegen/box/classes/kt903.kt

@@ -1,6 +1,6 @@
 import java.util.ArrayList
 
-fun Int.plus(a: Int?) = this + a!!
+operator fun Int.plus(a: Int?) = this + a!!
 
 public open class PerfectNumberFinder() {
         open public fun isPerfect(number : Int) : Boolean {

compiler/testData/codegen/box/classes/overloadBinaryOperator.kt

@@ -7,7 +7,7 @@ class ArrayWrapper<T>() {
        contents.add(item)
     }
 
-    fun plus(b: ArrayWrapper<T>): ArrayWrapper<T> {
+    operator fun plus(b: ArrayWrapper<T>): ArrayWrapper<T> {
         val result = ArrayWrapper<T>()
         result.contents.addAll(contents)
         result.contents.addAll(b.contents)

compiler/testData/codegen/box/classes/overloadPlusAssign.kt

@@ -7,11 +7,11 @@ class ArrayWrapper<T>() {
         contents.add(item)
     }
 
-    fun plusAssign(rhs: ArrayWrapper<T>) {
+    operator fun plusAssign(rhs: ArrayWrapper<T>) {
         contents.addAll(rhs.contents)
     }
 
-    fun get(index: Int): T {
+    operator fun get(index: Int): T {
         return contents.get(index)!!
     }
 }

compiler/testData/codegen/box/classes/overloadPlusAssignReturn.kt

@@ -7,14 +7,14 @@ class ArrayWrapper<T>() {
         contents.add(item)
     }
 
-    fun plus(rhs: ArrayWrapper<T>): ArrayWrapper<T> {
+    operator fun plus(rhs: ArrayWrapper<T>): ArrayWrapper<T> {
         val result = ArrayWrapper<T>()
         result.contents.addAll(contents)
         result.contents.addAll(rhs.contents)
         return result
     }
 
-    fun get(index: Int): T {
+    operator fun get(index: Int): T {
         return contents.get(index)!!
     }
 }

compiler/testData/codegen/box/classes/overloadPlusToPlusAssign.kt

@@ -7,14 +7,14 @@ class ArrayWrapper<T>() {
         contents.add(item)
     }
 
-    fun plus(rhs: ArrayWrapper<T>): ArrayWrapper<T> {
+    operator fun plus(rhs: ArrayWrapper<T>): ArrayWrapper<T> {
         val result = ArrayWrapper<T>()
         result.contents.addAll(contents)
         result.contents.addAll(rhs.contents)
         return result
     }
 
-    fun get(index: Int): T {
+    operator fun get(index: Int): T {
         return contents.get(index)!!
     }
 }

compiler/testData/codegen/box/classes/overloadUnaryOperator.kt

@@ -7,14 +7,14 @@ class ArrayWrapper<T>() {
        contents.add(item)
     }
 
-    fun minus(): ArrayWrapper<T> {
+    operator fun unaryMinus(): ArrayWrapper<T> {
         val result = ArrayWrapper<T>()
         result.contents.addAll(contents)
         Collections.reverse(result.contents)
         return result
     }
 
-    fun get(index: Int): T {
+    operator fun get(index: Int): T {
         return contents.get(index)!!
     }
 }

compiler/testData/codegen/box/closures/kt4137.kt

@@ -2,7 +2,7 @@ open class A(val s: Int) {
 
 }
 
-fun Int.foo(s: Int): Int {
+infix fun Int.foo(s: Int): Int {
     return this + s
 }
 

compiler/testData/codegen/box/controlStructures/emptyFor.kt

@@ -1,7 +1,7 @@
 var index = 0
 
 interface IterableIterator : Iterator<Int> {
-    fun iterator(): Iterator<Int> = this
+    operator fun iterator(): Iterator<Int> = this
 }
 
 val iterator = object : IterableIterator {

compiler/testData/codegen/box/controlStructures/forLoopMemberExtensionAll.kt

@@ -6,9 +6,9 @@ class C {
 
 class X {
     var hasNext = true
-    fun It.hasNext() = if (hasNext) {hasNext = false; true} else false
+    operator fun It.hasNext() = if (hasNext) {hasNext = false; true} else false
-    fun It.next() = 5
+    operator fun It.next() = 5
-    fun C.iterator(): It = It()
+    operator fun C.iterator(): It = It()
 
     fun test() {
         for (i in C()) {

compiler/testData/codegen/box/controlStructures/forLoopMemberExtensionHasNext.kt

@@ -1,14 +1,14 @@
 class It {
-    fun next() = 5
+    operator fun next() = 5
 }
 
 class C {
-    fun iterator(): It = It()
+    operator fun iterator(): It = It()
 }
 
 class X {
     var hasNext = true
-    fun It.hasNext() = if (hasNext) {hasNext = false; true} else false
+    operator fun It.hasNext() = if (hasNext) {hasNext = false; true} else false
 
     fun test() {
         for (i in C()) {

compiler/testData/codegen/box/controlStructures/forLoopMemberExtensionNext.kt

@@ -1,14 +1,14 @@
 class It {
     var hasNext = true
-    fun hasNext() = if (hasNext) {hasNext = false; true} else false
+    operator fun hasNext() = if (hasNext) {hasNext = false; true} else false
 }
 
 class C {
-    fun iterator(): It = It()
+    operator fun iterator(): It = It()
 }
 
 class X {
-    fun It.next() = 5
+    operator fun It.next() = 5
 
     fun test() {
         for (i in C()) {

compiler/testData/codegen/box/controlStructures/forUserType.kt

@@ -92,23 +92,23 @@ class MyCollection2(): Iterable<Int> {
 }
 
 class MyCollection3() {
-    fun iterator() = MyIterator()
+    operator fun iterator() = MyIterator()
 
     class MyIterator() {
         var k : Int = 5
 
-        fun next() : Int? = k--
+        operator fun next() : Int? = k--
-        fun hasNext() : Boolean = k > 0
+        operator fun hasNext() : Boolean = k > 0
     }
 }
 
 class MyCollection4() {
-    fun iterator() = MyIterator()
+    operator fun iterator() = MyIterator()
 
     class MyIterator() {
         var k : Int = 5
 
-        fun next() : Int = k--
+        operator fun next() : Int = k--
-        fun hasNext() = k > 0
+        operator fun hasNext() = k > 0
     }
 }

compiler/testData/codegen/box/controlStructures/inRangeConditionsInWhen.kt

@@ -1,4 +1,4 @@
-fun Int.contains(i : Int) = true
+operator fun Int.contains(i : Int) = true
 
 fun box(): String {
     when (1) {

compiler/testData/codegen/box/controlStructures/kt299.kt

@@ -7,7 +7,7 @@ class MyRange1() : Range<Int> {
 }
 
 class MyRange2() {
-    fun contains(item: Int) = true
+    operator fun contains(item: Int) = true
 }
 
 fun box(): String {

compiler/testData/codegen/box/controlStructures/kt513.kt

@@ -1,7 +1,7 @@
 import java.util.*
 
 class A() {
-    fun <T> ArrayList<T>.add3(el: T) = add(el)
+    infix fun <T> ArrayList<T>.add3(el: T) = add(el)
 
     fun test(list: ArrayList<Int>) {
         for (i in 1..10) {
@@ -10,12 +10,12 @@ class A() {
     }
 }
 
-fun <T> ArrayList<T>.add2(el: T) = add(el)
+infix fun <T> ArrayList<T>.add2(el: T) = add(el)
 
 fun box() : String{
     var list = ArrayList<Int>()
     for (i in 1..10) {
-      list add  i
+      list.add(i)
       list add2 i
     }
     A().test(list)

compiler/testData/codegen/box/controlStructures/kt628.kt

@@ -1,7 +1,7 @@
 class A() {
   fun action() = "OK"
 
-  fun infix(a: String) = "O" + a
+  infix fun infix(a: String) = "O" + a
 
   val property = "OK"
 

compiler/testData/codegen/box/defaultArguments/function/augmentedAssignment.kt

@@ -2,7 +2,7 @@ var result = "Fail"
 
 class A
 
-fun A.plusAssign(a: A, s: String = "OK") {
+operator fun A.plusAssign(a: A, s: String = "OK") {
     result = s
 }
 

compiler/testData/codegen/box/defaultArguments/function/augmentedAssignmentViaBinaryExpression.kt

@@ -2,7 +2,7 @@ var result = "Fail"
 
 class A
 
-fun A.plus(a: A, s: String = "OK"): A {
+operator fun A.plus(a: A, s: String = "OK"): A {
     result = s
     return this
 }

compiler/testData/codegen/box/defaultArguments/function/binaryCall.kt

@@ -1,3 +1,3 @@
-fun Int.foo(o: String, k: String = "K") = o + k
+infix fun Int.foo(o: String, k: String = "K") = o + k
 
 fun box() = 42 foo "O"

compiler/testData/codegen/box/defaultArguments/function/binaryExpression.kt

@@ -1,5 +1,5 @@
 class A
 
-fun A.plus(i: A, ok: String = "OK") = ok
+operator fun A.plus(i: A, ok: String = "OK") = ok
 
 fun box() = A() + A()

compiler/testData/codegen/box/defaultArguments/function/contains.kt

@@ -1,5 +1,5 @@
 class A
 
-fun A.contains(i: A, actual: Boolean = true) = actual
+operator fun A.contains(i: A, actual: Boolean = true) = actual
 
 fun box() = if (A() in A()) "OK" else "Fail"

compiler/testData/codegen/box/delegatedProperty/accessTopLevelDelegatedPropertyInClinit.kt

@@ -3,7 +3,7 @@ import kotlin.reflect.KProperty
 // KT-5612
 
 class Delegate {
-    public fun getValue(thisRef: Any?, prop: KProperty<*>): String {
+    operator fun getValue(thisRef: Any?, prop: KProperty<*>): String {
         return "OK"
     }
 }

compiler/testData/codegen/box/delegatedProperty/capturePropertyInClosure.kt

@@ -2,8 +2,8 @@ import kotlin.reflect.KProperty
 
 class Delegate {
     var inner = 1
-    fun getValue(t: Any?, p: KProperty<*>): Int = inner
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
-    fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
+    operator fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
 }
 
 class B {

compiler/testData/codegen/box/delegatedProperty/castGetReturnType.kt

@@ -1,7 +1,7 @@
 import kotlin.reflect.KProperty
 
 class Delegate {
-    fun getValue(t: Any?, p: KProperty<*>): Int = 1
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = 1
 }
 
 class AImpl {

compiler/testData/codegen/box/delegatedProperty/castSetParameter.kt

@@ -2,11 +2,11 @@ import kotlin.reflect.KProperty
 
 class Delegate {
     var inner = Derived()
-    fun getValue(t: Any?, p: KProperty<*>): Derived {
+    operator fun getValue(t: Any?, p: KProperty<*>): Derived {
         inner = Derived(inner.a + "-get")
         return inner
     }
-    fun setValue(t: Any?, p: KProperty<*>, i: Base) { inner = Derived(inner.a + "-" + i.a + "-set") }
+    operator fun setValue(t: Any?, p: KProperty<*>, i: Base) { inner = Derived(inner.a + "-" + i.a + "-set") }
 }
 
 class A {

compiler/testData/codegen/box/delegatedProperty/defaultArgs.kt

@@ -1,7 +1,7 @@
 import kotlin.reflect.KProperty
 
 class Delegate {
-    fun getValue(t: Any?, p: KProperty<*>, s: String = ""): Int = 1
+    operator fun getValue(t: Any?, p: KProperty<*>, s: String = ""): Int = 1
 }
 
 val prop: Int by Delegate()

compiler/testData/codegen/box/delegatedProperty/delegateAsInnerClass.kt

@@ -5,8 +5,8 @@ class A {
 
     class Delegate {
         var inner = 1
-        fun getValue(t: Any?, p: KProperty<*>): Int = inner
+        operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
-        fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
+        operator fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
     }
 }
 

compiler/testData/codegen/box/delegatedProperty/delegateByOtherProperty.kt

@@ -2,8 +2,8 @@ import kotlin.reflect.KProperty
 
 class Delegate {
     var inner = 1
-    fun getValue(t: Any?, p: KProperty<*>): Int = inner
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
-    fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
+    operator fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
 }
 
 class A {

compiler/testData/codegen/box/delegatedProperty/delegateByTopLevelFun.kt

@@ -2,8 +2,8 @@ import kotlin.reflect.KProperty
 
 class Delegate {
     var inner = 1
-    fun getValue(t: Any?, p: KProperty<*>): Int = inner
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
-    fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
+    operator fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
 }
 
 fun foo() = Delegate()

compiler/testData/codegen/box/delegatedProperty/delegateByTopLevelProperty.kt

@@ -2,8 +2,8 @@ import kotlin.reflect.KProperty
 
 class Delegate {
     var inner = 1
-    fun getValue(t: Any?, p: KProperty<*>): Int = inner
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
-    fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
+    operator fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
 }
 
 val p = Delegate()

compiler/testData/codegen/box/delegatedProperty/delegateForExtProperty.kt

@@ -1,7 +1,7 @@
 import kotlin.reflect.KProperty
 
 class Delegate {
-  fun getValue(t: A, p: KProperty<*>): Int = 1
+  operator fun getValue(t: A, p: KProperty<*>): Int = 1
 }
 
 val A.prop: Int by Delegate()

compiler/testData/codegen/box/delegatedProperty/delegateForExtPropertyInClass.kt

@@ -1,7 +1,7 @@
 import kotlin.reflect.KProperty
 
 class Delegate {
-    fun getValue(t: F.A, p: KProperty<*>): Int = 1
+    operator fun getValue(t: F.A, p: KProperty<*>): Int = 1
 }
 
 class F {

compiler/testData/codegen/box/delegatedProperty/genericDelegate.kt

@@ -1,8 +1,8 @@
 import kotlin.reflect.KProperty
 
 class Delegate<T>(var inner: T) {
-    fun getValue(t: Any?, p: KProperty<*>): T = inner
+    operator fun getValue(t: Any?, p: KProperty<*>): T = inner
-    fun setValue(t: Any?, p: KProperty<*>, i: T) { inner = i }
+    operator fun setValue(t: Any?, p: KProperty<*>, i: T) { inner = i }
 }
 
 class A {

compiler/testData/codegen/box/delegatedProperty/getAsExtensionFun.kt

@@ -3,7 +3,7 @@ import kotlin.reflect.KProperty
 class Delegate {
 }
 
-fun Delegate.getValue(t: Any?, p: KProperty<*>): Int = 1
+operator fun Delegate.getValue(t: Any?, p: KProperty<*>): Int = 1
 
 class A {
     val prop: Int by Delegate()

compiler/testData/codegen/box/delegatedProperty/getAsExtensionFunInClass.kt

@@ -4,7 +4,7 @@ class Delegate {
 }
 
 class A {
-    fun Delegate.getValue(t: Any?, p: KProperty<*>): Int = 1
+    operator fun Delegate.getValue(t: Any?, p: KProperty<*>): Int = 1
     val prop: Int by Delegate()
 }
 

compiler/testData/codegen/box/delegatedProperty/inClassVal.kt

@@ -1,7 +1,7 @@
 import kotlin.reflect.KProperty
 
 class Delegate {
-    fun getValue(t: Any?, p: KProperty<*>): Int = 1
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = 1
 }
 
 class A {

compiler/testData/codegen/box/delegatedProperty/inClassVar.kt

@@ -2,8 +2,8 @@ import kotlin.reflect.KProperty
 
 class Delegate {
     var inner = 1
-    fun getValue(t: Any?, p: KProperty<*>): Int = inner
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
-    fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
+    operator fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
 }
 
 class A {

compiler/testData/codegen/box/delegatedProperty/inTrait.kt

@@ -1,7 +1,7 @@
 import kotlin.reflect.KProperty
 
 class Delegate {
-    fun getValue(t: Any?, p: KProperty<*>): Int = 1
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = 1
 }
 
 interface A {

compiler/testData/codegen/box/delegatedProperty/inferredPropertyType.kt

@@ -1,8 +1,8 @@
 import kotlin.reflect.KProperty
 
 class Delegate<T>(var inner: T) {
-    fun getValue(t: Any?, p: KProperty<*>): T = inner
+    operator fun getValue(t: Any?, p: KProperty<*>): T = inner
-    fun setValue(t: Any?, p: KProperty<*>, i: T) { inner = i }
+    operator fun setValue(t: Any?, p: KProperty<*>, i: T) { inner = i }
 }
 
 class A {

compiler/testData/codegen/box/delegatedProperty/kt4138.kt

@@ -1,8 +1,8 @@
 import kotlin.reflect.KProperty
 
 class Delegate<T>(var inner: T) {
-    fun getValue(t: Any?, p: KProperty<*>): T = inner
+    operator fun getValue(t: Any?, p: KProperty<*>): T = inner
-    fun setValue(t: Any?, p: KProperty<*>, i: T) { inner = i }
+    operator fun setValue(t: Any?, p: KProperty<*>, i: T) { inner = i }
 }
 
 

compiler/testData/codegen/box/delegatedProperty/privateVar.kt

@@ -2,8 +2,8 @@ import kotlin.reflect.KProperty
 
 class Delegate {
    var inner = 1
-   fun getValue(t: Any?, p: KProperty<*>): Int = inner
+   operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
-   fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
+   operator fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
 }
 
 class A {

compiler/testData/codegen/box/delegatedProperty/propertyMetadataShouldBeCached.kt

@@ -18,18 +18,18 @@ val metadatas = IdentityHashMap<KProperty<*>, Unit>()
 fun record(p: KProperty<*>) = metadatas.put(p, Unit)
 
 object IntHandler {
-    fun getValue(t: Any?, p: KProperty<*>): Int { record(p); return 42 }
+    operator fun getValue(t: Any?, p: KProperty<*>): Int { record(p); return 42 }
-    fun setValue(t: Any?, p: KProperty<*>, value: Int) { record(p) }
+    operator fun setValue(t: Any?, p: KProperty<*>, value: Int) { record(p) }
 }
 
 object AnyHandler {
-    fun getValue(t: Any?, p: KProperty<*>): Any? { record(p); return 3.14 }
+    operator fun getValue(t: Any?, p: KProperty<*>): Any? { record(p); return 3.14 }
-    fun setValue(t: Any?, p: KProperty<*>, value: Any?) { record(p) }
+    operator fun setValue(t: Any?, p: KProperty<*>, value: Any?) { record(p) }
 }
 
 object StringHandler {
-    fun getValue(t: Any?, p: KProperty<*>): String { record(p); return p.name }
+    operator fun getValue(t: Any?, p: KProperty<*>): String { record(p); return p.name }
-    fun setValue(t: Any?, p: KProperty<*>, value: String) { record(p) }
+    operator fun setValue(t: Any?, p: KProperty<*>, value: String) { record(p) }
 }
 
 fun box(): String {

compiler/testData/codegen/box/delegatedProperty/setAsExtensionFun.kt

@@ -2,10 +2,10 @@ import kotlin.reflect.KProperty
 
 class Delegate {
     var inner = 1
-    fun getValue(t: Any?, p: KProperty<*>): Int = inner
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
 }
 
-fun Delegate.setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
+operator fun Delegate.setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
 
 class A {
     var prop: Int by Delegate()

compiler/testData/codegen/box/delegatedProperty/setAsExtensionFunInClass.kt

@@ -2,11 +2,11 @@ import kotlin.reflect.KProperty
 
 class Delegate {
     var inner = 1
-    fun getValue(t: Any?, p: KProperty<*>): Int = inner
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
 }
 
 class A {
-  fun Delegate.setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
+  operator fun Delegate.setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
 
   var prop: Int by Delegate()
 }

compiler/testData/codegen/box/delegatedProperty/topLevelVal.kt

@@ -1,7 +1,7 @@
 import kotlin.reflect.KProperty
 
 class Delegate {
-    fun getValue(t: Any?, p: KProperty<*>): Int = 1
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = 1
 }
 
 val prop: Int by Delegate()

compiler/testData/codegen/box/delegatedProperty/topLevelVar.kt

@@ -2,8 +2,8 @@ import kotlin.reflect.KProperty
 
 class Delegate {
     var inner = 1
-    fun getValue(t: Any?, p: KProperty<*>): Int = inner
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
-    fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
+    operator fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
 }
 
 var prop: Int by Delegate()

compiler/testData/codegen/box/delegatedProperty/twoPropByOneDelegete.kt

@@ -1,7 +1,7 @@
 import kotlin.reflect.KProperty
 
 class Delegate<T>(val f: (T) -> Int) {
-    fun getValue(t: T, p: KProperty<*>): Int = f(t)
+    operator fun getValue(t: T, p: KProperty<*>): Int = f(t)
 }
 
 val p = Delegate<A> { t -> t.foo() }

compiler/testData/codegen/box/delegatedProperty/useReflectionOnKProperty.kt

@@ -1,7 +1,7 @@
 import kotlin.reflect.KProperty
 
 class Delegate {
-    fun getValue(t: Any?, p: KProperty<*>): String {
+    operator fun getValue(t: Any?, p: KProperty<*>): String {
         p.parameters
         p.returnType
         p.annotations

compiler/testData/codegen/box/delegatedProperty/valInInnerClass.kt

@@ -1,7 +1,7 @@
 import kotlin.reflect.KProperty
 
 class Delegate {
-  fun getValue(t: Any?, p: KProperty<*>): Int = 1
+  operator fun getValue(t: Any?, p: KProperty<*>): Int = 1
 }
 
 class A {

compiler/testData/codegen/box/delegatedProperty/varInInnerClass.kt

@@ -2,8 +2,8 @@ import kotlin.reflect.KProperty
 
 class Delegate {
     var inner = 1
-    fun getValue(t: Any?, p: KProperty<*>): Int = inner
+    operator fun getValue(t: Any?, p: KProperty<*>): Int = inner
-    fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
+    operator fun setValue(t: Any?, p: KProperty<*>, i: Int) { inner = i }
 }
 
 class A {

compiler/testData/codegen/box/delegatedProperty/vararg.kt

@@ -1,7 +1,7 @@
 import kotlin.reflect.KProperty
 
 class Delegate {
-    fun getValue(t: Any?, vararg p: KProperty<*>): Int = 1
+    operator fun getValue(t: Any?, vararg p: KProperty<*>): Int = 1
 }
 
 val prop: Int by Delegate()

compiler/testData/codegen/box/extensionFunctions/kt1953.kt

@@ -1,6 +1,6 @@
 fun box(): String {
     val sb = StringBuilder()
-    fun String.plus() {
+    operator fun String.unaryPlus() {
         sb.append(this)
     }
 

compiler/testData/codegen/box/extensionFunctions/kt1953_class.kt

@@ -1,7 +1,7 @@
 class A {
     private val sb: StringBuilder = StringBuilder()
 
-    fun String.plus() {
+    operator fun String.unaryPlus() {
         sb.append(this)
     }
 

compiler/testData/codegen/box/extensionFunctions/kt3298.kt

@@ -2,7 +2,7 @@ var result = ""
 fun result(r: String) { result = r }
 
 object Foo {
-    private fun String.plus() = "(" + this + ")"
+    private operator fun String.unaryPlus() = "(" + this + ")"
 
     fun foo() = { result(+"Stuff") }()
 }

compiler/testData/codegen/box/extensionFunctions/kt3969.kt

@@ -2,7 +2,7 @@ var result = "Fail"
 
 class A
 
-fun A.inc(s: String = "OK"): A {
+operator fun A.inc(s: String = "OK"): A {
     result = s
     return this
 }

compiler/testData/codegen/box/extensionFunctions/kt865.kt

@@ -3,8 +3,8 @@ import java.util.*
 class Template() {
     val collected = ArrayList<String>()
 
-    fun String.plus() {
+    operator fun String.unaryPlus() {
-       collected.add(this@plus)
+       collected.add(this@unaryPlus)
     }
 
     fun test() {

compiler/testData/codegen/box/extensionFunctions/shared.kt

@@ -1,4 +1,4 @@
-fun <T> T.mustBe(t : T) {
+infix fun <T> T.mustBe(t : T) {
     assert("$this must be $t") {this == t}
 }
 

compiler/testData/codegen/box/extensionProperties/genericValForPrimitiveType.kt

@@ -11,7 +11,7 @@ class A {
     val char: Char = '0'
     val bool: Boolean = false
 
-    fun invoke() {
+    operator fun invoke() {
         int.valProp
         long.valProp
         short.valProp

compiler/testData/codegen/box/extensionProperties/genericVarForPrimitiveType.kt

@@ -12,7 +12,7 @@ class A {
     var char: Char = '0'
     var bool: Boolean = false
 
-    fun invoke() {
+    operator fun invoke() {
         int.varProp = int
         long.varProp = long
         short.varProp = short

compiler/testData/codegen/box/fieldRename/delegates.kt

@@ -3,14 +3,14 @@ import kotlin.reflect.KProperty
 public open class TestDelegate<T: Any>(private val initializer: () -> T) {
     private var value: T? = null
 
-    public open fun getValue(thisRef: Any?, desc: KProperty<*>): T {
+    operator open fun getValue(thisRef: Any?, desc: KProperty<*>): T {
         if (value == null) {
             value = initializer()
         }
         return value!!
     }
 
-    public open fun setValue(thisRef: Any?, desc: KProperty<*>, svalue : T) {
+    operator open fun setValue(thisRef: Any?, desc: KProperty<*>, svalue : T) {
         value = svalue
     }
 }

compiler/testData/codegen/box/finally/finallyAndFinally.kt

@@ -1,6 +1,6 @@
 class MyString {
     var s = ""
-    fun plus(x : String) : MyString {
+    operator fun plus(x : String) : MyString {
         s += x
         return this
     }

compiler/testData/codegen/box/finally/kt3894.kt

@@ -1,6 +1,6 @@
 class MyString {
     var s = ""
-    fun plus(x : String) : MyString {
+    operator fun plus(x : String) : MyString {
         s += x
         return this
     }

compiler/testData/codegen/box/finally/loopAndFinally.kt

@@ -2,7 +2,7 @@
 
 class MyString {
     var s = ""
-    fun plus(x : String) : MyString {
+    operator fun plus(x : String) : MyString {
         s += x
         return this
     }

compiler/testData/codegen/box/finally/tryLoopTry.kt

@@ -2,7 +2,7 @@
 
 class MyString {
     var s = ""
-    fun plus(x : String) : MyString {
+    operator fun plus(x : String) : MyString {
         s += x
         return this
     }

compiler/testData/codegen/box/functions/ea33909.kt

@@ -1,5 +1,5 @@
 fun box(): String {
-    return justPrint(9 compareTo 4) 
+    return justPrint(9.compareTo(4))
 } 
 
 fun justPrint(value: Int): String {

compiler/testData/codegen/box/functions/infixRecursiveCall.kt

@@ -1,4 +1,4 @@
-fun Int.test(x : Int) : Int {
+infix fun Int.test(x : Int) : Int {
     if (this > 1) {
         return (this - 1) test x
     }

compiler/testData/codegen/box/functions/invoke/extensionInvokeOnExpr.kt

@@ -1,8 +1,8 @@
 class A
 
 class B {
-    fun A.invoke() = "##"
+    operator fun A.invoke() = "##"
-    fun A.invoke(i: Int) = "#${i}"
+    operator fun A.invoke(i: Int) = "#${i}"
 }
 
 fun foo() = A()

compiler/testData/codegen/box/functions/invoke/invoke.kt

@@ -5,7 +5,7 @@ fun test1(predicate: (Int) -> Int, i: Int) = predicate(i)
 fun test2(predicate: (Int) -> Int, i: Int) = predicate.invoke(i)
 
 class Method {
-    fun invoke(i: Int) = i
+    operator fun invoke(i: Int) = i
 }
 
 fun test3(method: Method, i: Int) = method.invoke(i)
@@ -14,7 +14,7 @@ fun test4(method: Method, i: Int) = method(i)
 
 class Method2 {}
 
-fun Method2.invoke(s: String) = s
+operator fun Method2.invoke(s: String) = s
 
 fun test5(method2: Method2, s: String) = method2(s)
 

compiler/testData/codegen/box/functions/invoke/invokeOnExprByConvention.kt

@@ -2,8 +2,8 @@
 //KT-2728 Can't compile A()()
 
 class A {
-    fun invoke() = "##"
+    operator fun invoke() = "##"
-    fun invoke(i: Int) = "#${i}"
+    operator fun invoke(i: Int) = "#${i}"
 }
 
 fun foo() = A()

compiler/testData/codegen/box/functions/invoke/kt3189.kt

@@ -11,5 +11,5 @@ class Bad(val a: () -> Int) {
 
     fun test(): Int = a()
 
-    fun invoke(): Int = 2
+    operator fun invoke(): Int = 2
 }

compiler/testData/codegen/box/functions/invoke/kt3297.kt

@@ -1,6 +1,6 @@
 //KT-3297 Calling the wrong function inside an extension method to the Function0 class
 
-fun <R> Function0<R>.or(alt: () -> R): R {
+infix fun <R> Function0<R>.or(alt: () -> R): R {
     try {
         return this()
     } catch (e: Exception) {

compiler/testData/codegen/box/functions/invoke/kt3450getAndInvoke.kt

@@ -2,9 +2,9 @@
 
 public class A(val s: String) {
 
-    public fun get(i: Int) : A = A("$s + $i")
+    operator fun get(i: Int) : A = A("$s + $i")
 
-    public fun invoke(builder : A.() -> String): String = builder()
+    operator fun invoke(builder : A.() -> String): String = builder()
 }
 fun x(y : String) : A = A(y)
 

compiler/testData/codegen/box/functions/invoke/kt3631invokeOnString.kt

@@ -1,5 +1,5 @@
 //KT-3631 String.invoke doesn't work with literals
 
-fun String.invoke(i: Int) = "$this$i"
+operator fun String.invoke(i: Int) = "$this$i"
 
 fun box() = if ("a"(12) == "a12") "OK" else "fail"

compiler/testData/codegen/box/functions/invoke/kt3772.kt

@@ -5,7 +5,7 @@ open class A {
 }
 
 class B {
-    fun invoke(f: B.() -> Unit) = 2
+    operator fun invoke(f: B.() -> Unit) = 2
 }
 
 open class C

compiler/testData/codegen/box/functions/invoke/kt3821invokeOnThis.kt

@@ -1,7 +1,7 @@
 //KT-3821 Invoke convention doesn't work for `this`
 
 class A() {
-    fun invoke() = 42
+    operator fun invoke() = 42
     fun foo() = this() // Expecting a function type, but found A
 }
 

compiler/testData/codegen/box/functions/kt1038.kt

@@ -28,7 +28,7 @@ public fun<TItem> Iterable<TItem>.lazy() : Iterable<TItem>
             }
         }
 
-fun<TItem> Iterable<TItem>.where(predicate : (TItem)->Boolean) : Iterable<TItem>
+infix fun<TItem> Iterable<TItem>.where(predicate : (TItem)->Boolean) : Iterable<TItem>
         {
             return YieldingIterable {
                 val iterator = this.iterator()
@@ -45,7 +45,7 @@ fun<TItem> Iterable<TItem>.where(predicate : (TItem)->Boolean) : Iterable<TItem>
             }
         }
 
-fun<TItem, TResult> Iterable<TItem>.select(selector : (TItem)->TResult) : Iterable<TResult>
+infix fun<TItem, TResult> Iterable<TItem>.select(selector : (TItem)->TResult) : Iterable<TResult>
         {
             return YieldingIterable {
                 val iterator = this.iterator();

compiler/testData/codegen/box/functions/kt1199.kt

@@ -1,10 +1,10 @@
 
 interface MyIterator<T> {
-    fun hasNext() : Boolean
+    operator fun hasNext() : Boolean
-    fun next() : T
+    operator fun next() : T
 }
 
-fun <T : Any> T?.iterator() = object : MyIterator<T> {
+operator fun <T : Any> T?.iterator() = object : MyIterator<T> {
     var hasNext = this@iterator != null
       private set
     override fun hasNext() = hasNext

compiler/testData/codegen/box/functions/kt2929.kt

@@ -1,7 +1,7 @@
 fun foo(): Int {
    val a = "test"
    val b = "test"
-   return a compareTo b
+   return a.compareTo(b)
 }
 
 fun box(): String = if(foo() == 0) "OK" else "Fail"

compiler/testData/codegen/box/functions/kt3214.kt

@@ -7,15 +7,15 @@ class B {
 }
 
 fun test1(a: A): Int {
-    return a[1]
+    return a.get(1)
 }
 
 fun test2(a: A): Int {
-    return a[1, 2]
+    return a.get(1, 2)
 }
 
 fun test3(b: B): Int {
-    return b[Unit, Unit]
+    return b.get(Unit, Unit)
 }
 
 

compiler/testData/codegen/box/functions/localFunctions/kt4119.kt

@@ -3,10 +3,10 @@ fun foo(f: (Int?) -> Int): Int {
 }
 
 fun box() : String {
-    fun Int?.plus(a:Int) : Int = a!! + 2
+    infix operator fun Int?.plus(a: Int) : Int = a!! + 2
 
-    if (foo { it + 1} != 3) return "Fail 1"
+    if (foo { it + 1 } != 3) return "Fail 1"
-    if (foo { it plus 1} != 3) return "Fail 2"
+    if (foo { it plus 1 } != 3) return "Fail 2"
 
     return "OK"
 }

compiler/testData/codegen/box/functions/localFunctions/kt4119_2.kt

@@ -1,5 +1,5 @@
 fun box(): String {
-    fun Int.foo(a: Int): Int = a + 2
+    infix fun Int.foo(a: Int): Int = a + 2
 
     val s = object {
         fun test(): Int {

compiler/testData/codegen/box/functions/localFunctions/kt4783.kt

@@ -3,7 +3,7 @@ class T(val value: Int) {
 
 fun local() : Int {
 
-    fun T.get(s: Int): Int {
+    operator fun T.get(s: Int): Int {
         return s * this.value
     }
 

compiler/testData/codegen/box/functions/localFunctions/kt4784.kt

@@ -1,8 +1,8 @@
 open class T(var value: Int) {}
 
-fun plusAssign(): T {
+operator fun plusAssign(): T {
 
-    fun T.plusAssign(s: Int) {
+    operator fun T.plusAssign(s: Int) {
         value += s
     }