add 'operator' modifier when creating next() and hasNext() from usage

idea/src/org/jetbrains/kotlin/idea/quickfix/createFromUsage/createCallable/CreateHasNextFunctionActionFactory.kt

@@ -26,6 +26,7 @@ import org.jetbrains.kotlin.idea.quickfix.createFromUsage.callableBuilder.Functi
 import org.jetbrains.kotlin.idea.quickfix.createFromUsage.callableBuilder.TypeInfo
 import org.jetbrains.kotlin.psi.JetForExpression
 import org.jetbrains.kotlin.types.Variance
+import org.jetbrains.kotlin.types.expressions.OperatorConventions
 
 object CreateHasNextFunctionActionFactory : CreateCallableMemberFromUsageFactory<JetForExpression>() {
     override fun getElementOfInterest(diagnostic: Diagnostic): JetForExpression? {
@@ -37,6 +38,6 @@ object CreateHasNextFunctionActionFactory : CreateCallableMemberFromUsageFactory
                 DiagnosticFactory.cast(diagnostic, Errors.HAS_NEXT_MISSING, Errors.HAS_NEXT_FUNCTION_NONE_APPLICABLE)
         val ownerType = TypeInfo(diagnosticWithParameters.a, Variance.IN_VARIANCE)
         val returnType = TypeInfo(KotlinBuiltIns.getInstance().booleanType, Variance.OUT_VARIANCE)
-        return FunctionInfo("hasNext", ownerType, returnType)
+        return FunctionInfo(OperatorConventions.HAS_NEXT.asString(), ownerType, returnType, isOperator = true)
     }
 }

idea/src/org/jetbrains/kotlin/idea/quickfix/createFromUsage/createCallable/CreateNextFunctionActionFactory.kt

@@ -26,6 +26,7 @@ import org.jetbrains.kotlin.idea.quickfix.createFromUsage.callableBuilder.TypeIn
 import org.jetbrains.kotlin.psi.JetExpression
 import org.jetbrains.kotlin.psi.JetForExpression
 import org.jetbrains.kotlin.types.Variance
+import org.jetbrains.kotlin.types.expressions.OperatorConventions
 
 object CreateNextFunctionActionFactory : CreateCallableMemberFromUsageFactory<JetForExpression>() {
     override fun getElementOfInterest(diagnostic: Diagnostic): JetForExpression? {
@@ -38,6 +39,6 @@ object CreateNextFunctionActionFactory : CreateCallableMemberFromUsageFactory<Je
 
         val variableExpr = element.loopParameter ?: element.multiParameter ?: return null
         val returnType = TypeInfo(variableExpr as JetExpression, Variance.OUT_VARIANCE)
-        return FunctionInfo("next", ownerType, returnType)
+        return FunctionInfo(OperatorConventions.NEXT.asString(), ownerType, returnType, isOperator = true)
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/hasNext/createHasNextFromUsage1.kt.after

@@ -4,7 +4,7 @@ class FooIterator<T> {
         throw Exception("not implemented")
     }
 
-    fun hasNext(): Boolean {
+    operator fun hasNext(): Boolean {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/hasNext/createHasNextFromUsage2.kt.after

@@ -4,7 +4,7 @@ class FooIterator<T> {
         throw Exception("not implemented")
     }
 
-    fun hasNext(): Boolean {
+    operator fun hasNext(): Boolean {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/iterator/createIteratorFromUsage3.kt.after

@@ -2,7 +2,7 @@
 class FooIterator<T> {
     fun hasNext(): Boolean { return false }
 
-    fun next(): Any {
+    operator fun next(): Any {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/next/createNextFromUsage1.kt.after

@@ -2,7 +2,7 @@
 class FooIterator<T> {
     fun hasNext(): Boolean { return false }
 
-    fun next(): Int {
+    operator fun next(): Int {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }

idea/testData/quickfix/createFromUsage/createFunction/next/createNextFromUsage2.kt.after

@@ -2,7 +2,7 @@
 class FooIterator<T> {
     fun hasNext(): Boolean { return false }
 
-    fun next(): T {
+    operator fun next(): T {
         throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
     }
 }