Sealed classes now are decompiled correctly + test #EA-70762 Fixed

Author: mglukhikh

idea/idea-analysis/src/org/jetbrains/kotlin/idea/decompiler/stubBuilder/clsStubBuilding.kt

@@ -116,7 +116,8 @@ enum class FlagsToModifiers {
                 ProtoBuf.Modality.ABSTRACT -> JetTokens.ABSTRACT_KEYWORD
                 ProtoBuf.Modality.FINAL -> JetTokens.FINAL_KEYWORD
                 ProtoBuf.Modality.OPEN -> JetTokens.OPEN_KEYWORD
-                else -> throw IllegalStateException("Unexpected modality: $modality")
+                ProtoBuf.Modality.SEALED -> JetTokens.SEALED_KEYWORD
+                null -> throw IllegalStateException("Unexpected modality: null")
             }
         }
     },

idea/testData/decompiler/stubBuilder/Sealed/Sealed.kt

@@ -0,0 +1,6 @@
+package test
+
+sealed class Sealed {
+    class Nested: Sealed()
+    object Top: Sealed()
+}

idea/testData/decompiler/stubBuilder/Sealed/Sealed.txt

@@ -0,0 +1,33 @@
+PsiJetFileStubImpl[package=test]
+  PACKAGE_DIRECTIVE:
+    REFERENCE_EXPRESSION:[referencedName=test]
+  IMPORT_LIST:
+  CLASS:[fqName=test.Sealed, isEnumEntry=false, isInterface=false, isLocal=false, isTopLevel=true, name=Sealed, superNames=[]]
+    MODIFIER_LIST:[internal sealed]
+    PRIMARY_CONSTRUCTOR:
+      MODIFIER_LIST:[private]
+      VALUE_PARAMETER_LIST:
+    CLASS_BODY:
+      CLASS:[fqName=test.Sealed.Nested, isEnumEntry=false, isInterface=false, isLocal=false, isTopLevel=false, name=Nested, superNames=[Sealed]]
+        MODIFIER_LIST:[internal final]
+        PRIMARY_CONSTRUCTOR:
+          MODIFIER_LIST:[public]
+          VALUE_PARAMETER_LIST:
+        DELEGATION_SPECIFIER_LIST:
+          DELEGATOR_SUPER_CLASS:
+            TYPE_REFERENCE:
+              USER_TYPE:[isAbsoluteInRootPackage=false]
+                USER_TYPE:[isAbsoluteInRootPackage=false]
+                  REFERENCE_EXPRESSION:[referencedName=test]
+                REFERENCE_EXPRESSION:[referencedName=Sealed]
+        CLASS_BODY:
+      OBJECT_DECLARATION:[fqName=test.Sealed.Top, isCompanion=false, isLocal=false, isObjectLiteral=false, isTopLevel=false, name=Top, superNames=[Sealed]]
+        MODIFIER_LIST:[internal]
+        DELEGATION_SPECIFIER_LIST:
+          DELEGATOR_SUPER_CLASS:
+            TYPE_REFERENCE:
+              USER_TYPE:[isAbsoluteInRootPackage=false]
+                USER_TYPE:[isAbsoluteInRootPackage=false]
+                  REFERENCE_EXPRESSION:[referencedName=test]
+                REFERENCE_EXPRESSION:[referencedName=Sealed]
+        CLASS_BODY:

idea/tests/org/jetbrains/kotlin/idea/decompiler/stubBuilder/ClsStubBuilderTestGenerated.java

@@ -125,6 +125,12 @@ public void testPrivateToThis() throws Exception {
         doTest(fileName);
     }
 
+    @TestMetadata("Sealed")
+    public void testSealed() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/decompiler/stubBuilder/Sealed/");
+        doTest(fileName);
+    }
+
     @TestMetadata("SecondaryConstructors")
     public void testSecondaryConstructors() throws Exception {
         String fileName = JetTestUtils.navigationMetadata("idea/testData/decompiler/stubBuilder/SecondaryConstructors/");