Fix compiler tests

idea/testData/checker/Builders.kt

@@ -24,7 +24,7 @@ import java.util.*
   }
 
   abstract class TagWithText(name : String) : Tag(name) {
-    fun String.plus() {
+    operator fun String.plus() {
       children.add(TextElement(this))
     }
   }
@@ -78,7 +78,7 @@ import java.util.*
       }
   }
 
-  fun MutableMap<String, String>.set(key : String, value : String) = this.put(key, value)
+  operator fun MutableMap<String, String>.set(key : String, value : String) = this.put(key, value)
 
   fun html(init :  HTML.() -> Unit) : HTML {
     val html = HTML()

idea/testData/checker/ExtensionFunctions.kt

@@ -13,7 +13,7 @@ fun <T: Any, E> T.foo(<warning>x</warning> : E, y : A) : T   {
 
 class A
 
-fun A.plus(<warning>a</warning> : Any) {
+operator fun A.plus(<warning>a</warning> : Any) {
 
   1.foo()
   true.<error>foo</error>(<error><error>)</error></error>
@@ -21,7 +21,7 @@ fun A.plus(<warning>a</warning> : Any) {
   <warning>1</warning>
 }
 
-fun A.plus(<warning>a</warning> : Int) {
+operator fun A.plus(<warning>a</warning> : Int) {
   <warning>1</warning>
 }
 
@@ -46,7 +46,7 @@ fun Int.foo() = this
           val foo : Int = 0
         }
 
-        fun Any.equals(<warning>other</warning> : Any?) : Boolean = true
+        operator fun Any.equals(<warning>other</warning> : Any?) : Boolean = true
         fun Any?.equals1(<warning>other</warning> : Any?) : Boolean = true
         fun Any.equals2(<warning>other</warning> : Any?) : Boolean = true
 

idea/testData/checker/ForRangeConventions.kt

@@ -7,64 +7,64 @@ class NotRange1() {
 }
 
 abstract class NotRange2() {
-  abstract fun iterator() : Unit
+  abstract operator fun iterator() : Unit
 }
 
 abstract class ImproperIterator1 {
-  abstract fun hasNext() : Boolean
+  abstract operator fun hasNext() : Boolean
 }
 
 abstract class NotRange3() {
-  abstract fun iterator() : ImproperIterator1
+  abstract operator fun iterator() : ImproperIterator1
 }
 
 abstract class ImproperIterator2 {
-  abstract fun next() : Boolean
+  abstract operator fun next() : Boolean
 }
 
 abstract class NotRange4() {
-  abstract fun iterator() : ImproperIterator2
+  abstract operator fun iterator() : ImproperIterator2
 }
 
 abstract class ImproperIterator3 {
-  abstract fun hasNext() : Int
-  abstract fun next() : Int
+  abstract operator fun hasNext() : Int
+  abstract operator fun next() : Int
 }
 
 abstract class NotRange5() {
-  abstract fun iterator() : ImproperIterator3
+  abstract operator fun iterator() : ImproperIterator3
 }
 
 abstract class AmbiguousHasNextIterator {
-  abstract fun hasNext() : Boolean
+  abstract operator fun hasNext() : Boolean
   val hasNext : Boolean get() = false
-  abstract fun next() : Int
+  abstract operator fun next() : Int
 }
 
 abstract class NotRange6() {
-  abstract fun iterator() : AmbiguousHasNextIterator
+  abstract operator fun iterator() : AmbiguousHasNextIterator
 }
 
 abstract class ImproperIterator4 {
   val hasNext : Int get() = 1
-  abstract fun next() : Int
+  abstract operator fun next() : Int
 }
 
 abstract class NotRange7() {
-  abstract fun iterator() : ImproperIterator3
+  abstract operator fun iterator() : ImproperIterator3
 }
 
 abstract class GoodIterator {
-  abstract fun hasNext() : Boolean
-  abstract fun next() : Int
+  abstract operator fun hasNext() : Boolean
+  abstract operator fun next() : Int
 }
 
 abstract class Range0() {
-  abstract fun iterator() : GoodIterator
+  abstract operator fun iterator() : GoodIterator
 }
 
 abstract class Range1() {
-  abstract fun iterator() : Iterator<Int>
+  abstract operator fun iterator() : Iterator<Int>
 }
 
 fun test(notRange1: NotRange1, notRange2: NotRange2, notRange3: NotRange3, notRange4: NotRange4, notRange5: NotRange5, notRange6: NotRange6, notRange7: NotRange7, range0: Range0, range1: Range1) {

idea/testData/checker/IncDec.kt

@@ -1,6 +1,6 @@
 class IncDec() {
-  fun inc() : IncDec = this
-  fun dec() : IncDec = this
+  operator fun inc() : IncDec = this
+  operator fun dec() : IncDec = this
 }
 
 fun testIncDec() {
@@ -16,8 +16,8 @@ fun testIncDec() {
 }
 
 class WrongIncDec() {
-  fun inc() : Int = 1
-  fun dec() : Int = 1
+  operator fun inc() : Int = 1
+  operator fun dec() : Int = 1
 }
 
 fun testWrongIncDec() {
@@ -29,8 +29,8 @@ fun testWrongIncDec() {
 }
 
 class UnitIncDec() {
-  fun inc() : Unit {}
-  fun dec() : Unit {}
+  operator fun inc() : Unit {}
+  operator fun dec() : Unit {}
 }
 
 fun testUnitIncDec() {

idea/testData/checker/Shadowing.kt

@@ -1,6 +1,6 @@
 class A {
-    fun component1() = 42
-    fun component2() = 42
+    operator fun component1() = 42
+    operator fun component2() = 42
 }
 
 fun arrayA(): Array<A> = null!!