Fix for KT-12677. J2K: Invalid SAM constructor redundancy detection

Now all J2kPostProcessing's executing in fixed order, dependent on it index in J2kPostProcessingRegistrar._processings

idea/src/org/jetbrains/kotlin/idea/j2k/J2kPostProcessings.kt

@@ -37,6 +37,7 @@ import org.jetbrains.kotlin.psi.*
 import org.jetbrains.kotlin.psi.psiUtil.visibilityModifierType
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.diagnostics.Diagnostics
+import org.jetbrains.kotlin.utils.mapToIndex
 import java.util.*
 
 interface J2kPostProcessing {
@@ -49,6 +50,12 @@ object J2KPostProcessingRegistrar {
     val processings: Collection<J2kPostProcessing>
         get() = _processings
 
+    private val processingsToPriorityMap = HashMap<J2kPostProcessing, Int>()
+
+    fun priority(processing: J2kPostProcessing): Int {
+        return processingsToPriorityMap[processing]!!
+    }
+
     init {
         _processings.add(RemoveExplicitTypeArgumentsProcessing())
         _processings.add(RemoveRedundantOverrideVisibilityProcessing())
@@ -111,18 +118,13 @@ object J2KPostProcessingRegistrar {
                 }
             }
         }
-    }
 
-    private inline fun <reified TElement : KtElement, TIntention: SelfTargetingRangeIntention<TElement>> registerIntentionBasedProcessing(
-            intention: TIntention
-    ) {
-        //TODO: replace with optional argument when supported for inline functions
-        return registerIntentionBasedProcessing<TElement, TIntention>(intention, { true })
+        processingsToPriorityMap.putAll(_processings.mapToIndex())
     }
 
     private inline fun <reified TElement : KtElement, TIntention: SelfTargetingRangeIntention<TElement>> registerIntentionBasedProcessing(
             intention: TIntention,
-            noinline additionalChecker: (TElement) -> Boolean
+            noinline additionalChecker: (TElement) -> Boolean = { true }
     ) {
         _processings.add(object : J2kPostProcessing {
             override fun createAction(element: KtElement, diagnostics: Diagnostics): (() -> Unit)? {

idea/src/org/jetbrains/kotlin/idea/j2k/J2kPostProcessor.kt

@@ -21,9 +21,6 @@ import com.intellij.openapi.util.TextRange
 import com.intellij.psi.PsiElement
 import com.intellij.psi.PsiRecursiveElementVisitor
 import com.intellij.psi.codeStyle.CodeStyleManager
-import com.intellij.psi.impl.PsiModificationTrackerImpl
-import com.intellij.psi.util.PsiModificationTracker
-import com.intellij.util.SmartList
 import org.jetbrains.kotlin.idea.caches.resolve.getResolutionFacade
 import org.jetbrains.kotlin.idea.caches.resolve.resolveImportReference
 import org.jetbrains.kotlin.idea.conversion.copy.range
@@ -54,14 +51,12 @@ class J2kPostProcessor(private val formatCode: Boolean) : PostProcessor {
         while (elementToActions.isNotEmpty()) {
             var modificationStamp: Long? = file.modificationStamp
 
-            for ((element, actions) in elementToActions) {
-                for ((action, processing) in actions) {
-                    if (element.isValid) {
-                        action()
-                    }
-                    else {
-                        modificationStamp = null
-                    }
+            for ((element, action, processing) in elementToActions) {
+                if (element.isValid) {
+                    action()
+                }
+                else {
+                    modificationStamp = null
                 }
             }
 
@@ -83,14 +78,14 @@ class J2kPostProcessor(private val formatCode: Boolean) : PostProcessor {
         }
     }
 
-    private data class ActionData(val action: () -> Unit, val processing: J2kPostProcessing)
+    private data class ActionData(val element: KtElement, val action: () -> Unit, val priority: Int)
 
-    private fun collectAvailableActions(file: KtFile, rangeMarker: RangeMarker?): LinkedHashMap<KtElement, SmartList<ActionData>> {
+    private fun collectAvailableActions(file: KtFile, rangeMarker: RangeMarker?): List<ActionData> {
         val diagnostics = analyzeFileRange(file, rangeMarker)
 
-        val elementToActions = LinkedHashMap<KtElement, SmartList<ActionData>>()
+        val availableActions = ArrayList<ActionData>()
 
-        file.accept(object : PsiRecursiveElementVisitor(){
+        file.accept(object : PsiRecursiveElementVisitor() {
             override fun visitElement(element: PsiElement) {
                 if (element is KtElement) {
                     val rangeResult = rangeFilter(element, rangeMarker)
@@ -102,15 +97,15 @@ class J2kPostProcessor(private val formatCode: Boolean) : PostProcessor {
                         J2KPostProcessingRegistrar.processings.forEach { processing ->
                             val action = processing.createAction(element, diagnostics)
                             if (action != null) {
-                                elementToActions.getOrPut(element) { SmartList() }.add(ActionData(action, processing))
+                                availableActions.add(ActionData(element, action, J2KPostProcessingRegistrar.priority(processing)))
                             }
                         }
                     }
                 }
             }
         })
-
-        return elementToActions
+        availableActions.sortBy { it.priority }
+        return availableActions
     }
 
     private fun analyzeFileRange(file: KtFile, rangeMarker: RangeMarker?): Diagnostics {

j2k/testData/multiFile/FunctionalInterfaceAcceptor/Stage.java

@@ -0,0 +1,15 @@
+package test;
+public class Stage {
+    public void context(Acceptor acceptor) {
+        acceptor.acceptFace(new Face() {
+            @Override public void subject(String p) {
+                System.out.println(p);
+            }
+        });
+        acceptor.setFace(new Face() {
+            @Override public void subject(String p) {
+                System.out.println(p);
+            }
+        });
+    }
+}

j2k/testData/multiFile/FunctionalInterfaceAcceptor/Stage.kt

@@ -0,0 +1,8 @@
+package test
+
+class Stage {
+    fun context(acceptor: Acceptor) {
+        acceptor.acceptFace { p -> println(p) }
+        acceptor.face = Face { p -> println(p) }
+    }
+}

j2k/testData/multiFile/FunctionalInterfaceAcceptor/external/Acceptor.java

@@ -0,0 +1,8 @@
+package test;
+public class Acceptor {
+    private Face face;
+    public Face getFace() { return face; }
+    public void setFace(Face face) { this.face = face; }
+
+    public void acceptFace(Face face) {}
+}

j2k/testData/multiFile/FunctionalInterfaceAcceptor/external/Acceptor.java.expected

@@ -0,0 +1,8 @@
+package test;
+public class Acceptor {
+    private Face face;
+    public Face getFace() { return face; }
+    public void setFace(Face face) { this.face = face; }
+
+    public void acceptFace(Face face) {}
+}

j2k/testData/multiFile/FunctionalInterfaceAcceptor/external/Face.java

@@ -0,0 +1,4 @@
+package test;
+public interface Face {
+    void subject(String p);
+}

j2k/testData/multiFile/FunctionalInterfaceAcceptor/external/Face.java.expected

@@ -0,0 +1,4 @@
+package test;
+public interface Face {
+    void subject(String p);
+}

j2k/tests/org/jetbrains/kotlin/j2k/JavaToKotlinConverterMultiFileTestGenerated.java

@@ -47,6 +47,12 @@ public class JavaToKotlinConverterMultiFileTestGenerated extends AbstractJavaToK
         doTest(fileName);
     }
 
+    @TestMetadata("FunctionalInterfaceAcceptor")
+    public void testFunctionalInterfaceAcceptor() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("j2k/testData/multiFile/FunctionalInterfaceAcceptor/");
+        doTest(fileName);
+    }
+
     @TestMetadata("GetterAndSetterUsages")
     public void testGetterAndSetterUsages() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("j2k/testData/multiFile/GetterAndSetterUsages/");