New J2K: fix assignment target in ConvertGettersAndSettersToPropertyProcessing

#KT-36190 fixed

nj2k/nj2k-services/src/org/jetbrains/kotlin/nj2k/postProcessing/processings/ConvertGettersAndSettersToPropertyProcessing.kt

@@ -238,6 +238,7 @@ private class ConvertGettersAndSettersToPropertyStatefulProcessing(
             modifiers
         )
         ktSetter.filterModifiers()
+        val propertyName = property.name
         if (setter is RealSetter) {
             setter.function.forAllUsages { usage ->
                 val callExpression = usage.getStrictParentOfType<KtCallExpression>() ?: return@forAllUsages
@@ -245,10 +246,10 @@ private class ConvertGettersAndSettersToPropertyStatefulProcessing(
                 val newValue = callExpression.valueArguments.single()
                 if (qualifier != null) {
                     qualifier.replace(
-                        factory.createExpression("${qualifier.receiverExpression.text}.${setter.name} = ${newValue.text}")
+                        factory.createExpression("${qualifier.receiverExpression.text}.$propertyName = ${newValue.text}")
                     )
                 } else {
-                    callExpression.replace(factory.createExpression("${setter.name} = ${newValue.text}"))
+                    callExpression.replace(factory.createExpression("$propertyName = ${newValue.text}"))
                 }
             }
         }

nj2k/testData/newJ2k/detectProperties/IsPrefixSetterCall.java

@@ -0,0 +1,10 @@
+public class TestSetter {
+    private static void setThing(int thing) { }
+
+    private static int isThing() { return 42; }
+
+    public static void main(String[] args) {
+        setThing(42);
+        System.out.println(isThing());
+    }
+}

nj2k/testData/newJ2k/detectProperties/IsPrefixSetterCall.kt

@@ -0,0 +1,11 @@
+object TestSetter {
+    private var isThing: Int
+        private get() = 42
+        private set(thing) {}
+
+    @JvmStatic
+    fun main(args: Array<String>) {
+        isThing = 42
+        println(isThing)
+    }
+}

nj2k/tests/org/jetbrains/kotlin/nj2k/NewJavaToKotlinConverterSingleFileTestGenerated.java

@@ -1585,6 +1585,11 @@ public class NewJavaToKotlinConverterSingleFileTestGenerated extends AbstractNew
             runTest("nj2k/testData/newJ2k/detectProperties/IsPrefix.java");
         }
 
+        @TestMetadata("IsPrefixSetterCall.java")
+        public void testIsPrefixSetterCall() throws Exception {
+            runTest("nj2k/testData/newJ2k/detectProperties/IsPrefixSetterCall.java");
+        }
+
         @TestMetadata("JavaKeywordPropertyName.java")
         public void testJavaKeywordPropertyName() throws Exception {
             runTest("nj2k/testData/newJ2k/detectProperties/JavaKeywordPropertyName.java");