Remove VariableDescriptor#isObjectDeclaration and usages.

Replace with BindingContext trace slice OBJECT_DECLARATION_CLASS.
Remove corresponding field from constructor.
Introduce hack in JavaDescriptorResolver which creates dummy class descriptors for enum entry objects.

compiler/backend/src/org/jetbrains/jet/codegen/AccessorForPropertyDescriptor.java

@@ -29,7 +29,7 @@ import java.util.Collections;
 public class AccessorForPropertyDescriptor extends PropertyDescriptor {
     public AccessorForPropertyDescriptor(PropertyDescriptor pd, DeclarationDescriptor containingDeclaration, int index) {
         super(containingDeclaration, Collections.<AnnotationDescriptor>emptyList(), Modality.FINAL, Visibilities.PUBLIC,
-              pd.isVar(), pd.isObjectDeclaration(), Name.identifier(pd.getName() + "$b$" + index),
+              pd.isVar(), Name.identifier(pd.getName() + "$b$" + index),
               Kind.DECLARATION);
 
         JetType receiverType = pd.getReceiverParameter().exists() ? pd.getReceiverParameter().getType() : null;

compiler/backend/src/org/jetbrains/jet/codegen/ExpressionCodegen.java

@@ -1107,7 +1107,8 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> {
         if (descriptor instanceof PropertyDescriptor) {
             PropertyDescriptor propertyDescriptor = (PropertyDescriptor) descriptor;
 
-            if (propertyDescriptor.isObjectDeclaration()) {
+            ClassDescriptor objectClassDescriptor = getBindingContext().get(BindingContext.OBJECT_DECLARATION_CLASS, propertyDescriptor);
+            if (objectClassDescriptor != null) {
                 boolean isEnumEntry = DescriptorUtils.isEnumClassObject(propertyDescriptor.getContainingDeclaration());
                 if (isEnumEntry) {
                     ClassDescriptor containing = (ClassDescriptor) propertyDescriptor.getContainingDeclaration().getContainingDeclaration();
@@ -1117,9 +1118,7 @@ public class ExpressionCodegen extends JetVisitor<StackValue, StackValue> {
                     return StackValue.onStack(type);
                 }
                 else {
-                    ClassifierDescriptor classDescriptor = propertyDescriptor.getReturnType().getConstructor().getDeclarationDescriptor();
-                    assert classDescriptor != null;
-                    Type type = typeMapper.mapType(classDescriptor.getDefaultType(), MapTypeMode.VALUE);
+                    Type type = typeMapper.mapType(objectClassDescriptor.getDefaultType(), MapTypeMode.VALUE);
                     return StackValue.field(type, JvmClassName.byType(type), "$instance", true);
                 }
             }

compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/JavaDescriptorResolver.java

@@ -39,7 +39,10 @@ import org.jetbrains.jet.lang.resolve.name.FqName;
 import org.jetbrains.jet.lang.resolve.name.FqNameBase;
 import org.jetbrains.jet.lang.resolve.name.FqNameUnsafe;
 import org.jetbrains.jet.lang.resolve.name.Name;
-import org.jetbrains.jet.lang.resolve.scopes.*;
+import org.jetbrains.jet.lang.resolve.scopes.JetScope;
+import org.jetbrains.jet.lang.resolve.scopes.RedeclarationHandler;
+import org.jetbrains.jet.lang.resolve.scopes.WritableScope;
+import org.jetbrains.jet.lang.resolve.scopes.WritableScopeImpl;
 import org.jetbrains.jet.lang.types.*;
 import org.jetbrains.jet.lang.types.checker.JetTypeChecker;
 import org.jetbrains.jet.lang.types.lang.JetStandardClasses;
@@ -1185,10 +1188,23 @@ public class JavaDescriptorResolver implements DependencyClassByQualifiedNameRes
                     resolveModality(anyMember.getMember(), isFinal),
                     visibility,
                     isVar,
-                    DescriptorUtils.isEnumClassObject(realOwner),
                     propertyName,
                     CallableMemberDescriptor.Kind.DECLARATION);
 
+            //TODO: this is a hack to indicate that this enum entry is an object
+            // class descriptor for enum entries is not used by backends so for now this should be safe to use
+            // remove this when JavaDescriptorResolver gets rewritten
+            if (DescriptorUtils.isEnumClassObject(realOwner)) {
+                ClassDescriptorImpl dummyClassDescriptorForEnumEntryObject =
+                        new ClassDescriptorImpl(realOwner, Collections.<AnnotationDescriptor>emptyList(), Modality.FINAL, propertyName);
+                dummyClassDescriptorForEnumEntryObject.initialize(
+                                    true,
+                                    Collections.<TypeParameterDescriptor>emptyList(),
+                                    Collections.<JetType>emptyList(), JetScope.EMPTY,
+                                    Collections.<ConstructorDescriptor>emptySet(), null);
+                trace.record(BindingContext.OBJECT_DECLARATION_CLASS, propertyDescriptor, dummyClassDescriptorForEnumEntryObject);
+            }
+
             PropertyGetterDescriptor getterDescriptor = null;
             PropertySetterDescriptor setterDescriptor = null;
             if (members.getter != null) {

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/LocalVariableDescriptor.java

@@ -56,11 +56,6 @@ public class LocalVariableDescriptor extends VariableDescriptorImpl {
         return isVar;
     }
 
-    @Override
-    public boolean isObjectDeclaration() {
-        return false;
-    }
-
     @NotNull
     @Override
     public Visibility getVisibility() {

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/PropertyDescriptor.java

@@ -46,7 +46,6 @@ public class PropertyDescriptor extends VariableDescriptorImpl implements Callab
     private final Modality modality;
     private Visibility visibility;
     private final boolean isVar;
-    private final boolean isObject;
     private final Set<PropertyDescriptor> overriddenProperties = Sets.newLinkedHashSet(); // LinkedHashSet is essential here
     private final PropertyDescriptor original;
     private final Kind kind;
@@ -64,12 +63,11 @@ public class PropertyDescriptor extends VariableDescriptorImpl implements Callab
             @NotNull Modality modality,
             @NotNull Visibility visibility,
             boolean isVar,
-            boolean isObject,
             @NotNull Name name,
-            @NotNull Kind kind) {
+            @NotNull Kind kind
+    ) {
         super(containingDeclaration, annotations, name);
         this.isVar = isVar;
-        this.isObject = isObject;
         this.modality = modality;
         this.visibility = visibility;
         this.original = original == null ? this : original.getOriginal();
@@ -82,10 +80,10 @@ public class PropertyDescriptor extends VariableDescriptorImpl implements Callab
             @NotNull Modality modality,
             @NotNull Visibility visibility,
             boolean isVar,
-            boolean isObject,
             @NotNull Name name,
-            @NotNull Kind kind) {
-        this(null, containingDeclaration, annotations, modality, visibility, isVar, isObject, name, kind);
+            @NotNull Kind kind
+    ) {
+        this(null, containingDeclaration, annotations, modality, visibility, isVar, name, kind);
     }
 
     public PropertyDescriptor(
@@ -94,14 +92,13 @@ public class PropertyDescriptor extends VariableDescriptorImpl implements Callab
             @NotNull Modality modality,
             @NotNull Visibility visibility,
             boolean isVar,
-            boolean isObject,
             @Nullable JetType receiverType,
             @NotNull ReceiverDescriptor expectedThisObject,
             @NotNull Name name,
             @NotNull JetType outType,
             @NotNull Kind kind
-        ) {
-        this(containingDeclaration, annotations, modality, visibility, isVar, isObject, name, kind);
+    ) {
+        this(containingDeclaration, annotations, modality, visibility, isVar, name, kind);
         setType(outType, Collections.<TypeParameterDescriptor>emptyList(), expectedThisObject, receiverType);
     }
 
@@ -159,11 +156,6 @@ public class PropertyDescriptor extends VariableDescriptorImpl implements Callab
         return isVar;
     }
 
-    @Override
-    public boolean isObjectDeclaration() {
-        return isObject;
-    }
-
     @NotNull
     @Override
     public Modality getModality() {
@@ -209,7 +201,7 @@ public class PropertyDescriptor extends VariableDescriptorImpl implements Callab
     private PropertyDescriptor doSubstitute(TypeSubstitutor originalSubstitutor,
             DeclarationDescriptor newOwner, Modality newModality, Visibility newVisibility, boolean preserveOriginal, boolean copyOverrides, Kind kind) {
         PropertyDescriptor substitutedDescriptor = new PropertyDescriptor(preserveOriginal ? getOriginal() : this, newOwner,
-                getAnnotations(), newModality, newVisibility, isVar(), isObjectDeclaration(), getName(), kind);
+                getAnnotations(), newModality, newVisibility, isVar(), getName(), kind);
 
         List<TypeParameterDescriptor> substitutedTypeParameters = Lists.newArrayList();
         TypeSubstitutor substitutor = DescriptorSubstitutor.substituteTypeParameters(getTypeParameters(), originalSubstitutor, substitutedDescriptor, substitutedTypeParameters);

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/ScriptDescriptor.java

@@ -92,7 +92,6 @@ public class ScriptDescriptor extends DeclarationDescriptorNonRootImpl {
                                                                Modality.FINAL,
                                                                Visibilities.PUBLIC,
                                                                false,
-                                                               false,
                                                                Name.identifier(ScriptNameUtil.LAST_EXPRESSION_VALUE_FIELD_NAME),
                                                                CallableMemberDescriptor.Kind.DECLARATION);
         propertyDescriptor.setType(returnType, Collections.<TypeParameterDescriptor>emptyList(), new ClassReceiver(classDescriptor), ReceiverDescriptor.NO_RECEIVER);
@@ -181,7 +180,6 @@ public class ScriptDescriptor extends DeclarationDescriptorNonRootImpl {
                                                                    Modality.FINAL,
                                                                    Visibilities.PUBLIC,
                                                                    false,
-                                                                   false,
                                                                    parameter.getName(),
                                                                    CallableMemberDescriptor.Kind.DECLARATION);
             propertyDescriptor.setType(parameter.getType(), Collections.<TypeParameterDescriptor>emptyList(), classReceiver, ReceiverDescriptor.NO_RECEIVER);

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/ValueParameterDescriptorImpl.java

@@ -143,11 +143,6 @@ public class ValueParameterDescriptorImpl extends VariableDescriptorImpl impleme
         return isVar;
     }
 
-    @Override
-    public boolean isObjectDeclaration() {
-        return false;
-    }
-
     @NotNull
     @Override
     public ValueParameterDescriptor copy(@NotNull DeclarationDescriptor newOwner) {

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/VariableDescriptor.java

@@ -36,6 +36,4 @@ public interface VariableDescriptor extends CallableDescriptor {
     VariableDescriptor substitute(TypeSubstitutor substitutor);
 
     boolean isVar();
-    
-    boolean isObjectDeclaration();
 }

compiler/frontend/src/org/jetbrains/jet/lang/resolve/BindingContext.java

@@ -113,6 +113,8 @@ public interface BindingContext {
 
     WritableSlice<Box<DeferredType>, Boolean> DEFERRED_TYPE = Slices.createCollectiveSetSlice();
 
+    WritableSlice<PropertyDescriptor, ClassDescriptor> OBJECT_DECLARATION_CLASS = Slices.createSimpleSlice();
+
     WritableSlice<PropertyDescriptor, Boolean> BACKING_FIELD_REQUIRED = new Slices.SetSlice<PropertyDescriptor>(DO_NOTHING) {
         @Override
         public Boolean computeValue(SlicedMap map, PropertyDescriptor propertyDescriptor, Boolean backingFieldRequired, boolean valueNotFound) {

compiler/frontend/src/org/jetbrains/jet/lang/resolve/DescriptorResolver.java

@@ -609,7 +609,6 @@ public class DescriptorResolver {
                     Modality.FINAL,
                     Visibilities.INTERNAL,
                     variable.isVar(),
-                    false,
                     JetPsiUtil.safeName(variable.getName()),
                     CallableMemberDescriptor.Kind.DECLARATION
             );
@@ -678,13 +677,13 @@ public class DescriptorResolver {
                 Modality.FINAL,
                 resolveVisibilityFromModifiers(modifierList),
                 false,
-                true,
                 JetPsiUtil.safeName(objectDeclaration.getName()),
                 CallableMemberDescriptor.Kind.DECLARATION
         );
         propertyDescriptor.setType(classDescriptor.getDefaultType(), Collections.<TypeParameterDescriptor>emptyList(),
                                    DescriptorUtils.getExpectedThisObjectIfNeeded(containingDeclaration), ReceiverDescriptor.NO_RECEIVER);
         propertyDescriptor.initialize(createDefaultGetter(propertyDescriptor), null);
+        trace.record(BindingContext.OBJECT_DECLARATION_CLASS, propertyDescriptor, classDescriptor);
         JetObjectDeclarationName nameAsDeclaration = objectDeclaration.getNameAsDeclaration();
         if (nameAsDeclaration != null) {
             trace.record(BindingContext.OBJECT_DECLARATION, nameAsDeclaration, propertyDescriptor);
@@ -747,7 +746,6 @@ public class DescriptorResolver {
                 resolveModalityFromModifiers(property.getModifierList(), defaultModality),
                 resolveVisibilityFromModifiers(property.getModifierList()),
                 isVar,
-                false,
                 JetPsiUtil.safeName(property.getName()),
                 CallableMemberDescriptor.Kind.DECLARATION
         );
@@ -1087,7 +1085,6 @@ public class DescriptorResolver {
                 resolveModalityFromModifiers(parameter.getModifierList(), Modality.FINAL),
                 resolveVisibilityFromModifiers(parameter.getModifierList()),
                 isMutable,
-                false,
                 name,
                 CallableMemberDescriptor.Kind.DECLARATION
         );

compiler/frontend/src/org/jetbrains/jet/lang/resolve/QualifiedExpressionResolver.java

@@ -258,7 +258,7 @@ public class QualifiedExpressionResolver {
 
     @NotNull
     private Collection<? extends DeclarationDescriptor> filterAndStoreResolutionResult(@NotNull Collection<SuccessfulLookupResult> lookupResults,
-            @NotNull JetSimpleNameExpression referenceExpression, @NotNull BindingTrace trace, @NotNull JetScope scopeToCheckVisibility,
+            @NotNull JetSimpleNameExpression referenceExpression, @NotNull final BindingTrace trace, @NotNull JetScope scopeToCheckVisibility,
             boolean onlyClasses, boolean storeResult) {
 
         if (lookupResults.isEmpty()) {
@@ -304,7 +304,8 @@ public class QualifiedExpressionResolver {
                     public boolean apply(@Nullable DeclarationDescriptor descriptor) {
                         return (descriptor instanceof NamespaceDescriptor) ||
                                (descriptor instanceof ClassifierDescriptor) ||
-                               (descriptor instanceof VariableDescriptor && ((VariableDescriptor)descriptor).isObjectDeclaration());
+                               ((descriptor instanceof PropertyDescriptor) &&
+                                (trace.get(BindingContext.OBJECT_DECLARATION_CLASS, ((PropertyDescriptor) descriptor)) != null));
                     }
                 }));
             }

compiler/frontend/src/org/jetbrains/jet/lang/types/ErrorUtils.java

@@ -162,7 +162,6 @@ public class ErrorUtils {
             Modality.OPEN,
             Visibilities.INTERNAL,
             true,
-            false,
             null,
             ReceiverDescriptor.NO_RECEIVER,
             Name.special("<ERROR PROPERTY>"),

compiler/frontend/src/org/jetbrains/jet/lang/types/lang/JetStandardClasses.java

@@ -176,7 +176,7 @@ public class JetStandardClasses {
                         false, Variance.OUT_VARIANCE, Name.identifier("T" + (j + 1)), j);
                 typeParameters.add(typeParameterDescriptor);
 
-                PropertyDescriptor propertyDescriptor = new PropertyDescriptor(classDescriptor, Collections.<AnnotationDescriptor>emptyList(), Modality.FINAL, Visibilities.PUBLIC, false, false, Name.identifier("_" + (j + 1)), CallableMemberDescriptor.Kind.DECLARATION);
+                PropertyDescriptor propertyDescriptor = new PropertyDescriptor(classDescriptor, Collections.<AnnotationDescriptor>emptyList(), Modality.FINAL, Visibilities.PUBLIC, false, Name.identifier("_" + (j + 1)), CallableMemberDescriptor.Kind.DECLARATION);
                 propertyDescriptor.setType(typeParameterDescriptor.getDefaultType(), Collections.<TypeParameterDescriptorImpl>emptyList(), classDescriptor.getImplicitReceiver(), ReceiverDescriptor.NO_RECEIVER);
                 PropertyGetterDescriptor getterDescriptor = new PropertyGetterDescriptor(propertyDescriptor, Collections.<AnnotationDescriptor>emptyList(), Modality.FINAL, Visibilities.PUBLIC, false, true, CallableMemberDescriptor.Kind.DECLARATION);
                 getterDescriptor.initialize(typeParameterDescriptor.getDefaultType());

js/js.translator/src/org/jetbrains/k2js/translate/context/StaticContext.java

@@ -40,6 +40,7 @@ import org.jetbrains.k2js.translate.utils.PredefinedAnnotation;
 import java.util.Map;
 
 import static org.jetbrains.k2js.translate.utils.AnnotationsUtils.*;
+import static org.jetbrains.k2js.translate.utils.BindingUtils.isObjectDeclaration;
 import static org.jetbrains.k2js.translate.utils.JsDescriptorUtils.*;
 
 /**
@@ -226,7 +227,7 @@ public final class StaticContext {
 
                     PropertyAccessorDescriptor accessorDescriptor = (PropertyAccessorDescriptor) descriptor;
                     String propertyName = accessorDescriptor.getCorrespondingProperty().getName().getName();
-                    if (accessorDescriptor.getCorrespondingProperty().isObjectDeclaration()) {
+                    if (isObjectDeclaration(bindingContext, accessorDescriptor.getCorrespondingProperty())) {
                         return declareName(descriptor, propertyName);
                     }
 

js/js.translator/src/org/jetbrains/k2js/translate/reference/CallTranslator.java

@@ -33,6 +33,7 @@ import java.util.ArrayList;
 import java.util.List;
 
 import static org.jetbrains.k2js.translate.reference.CallParametersResolver.resolveCallParameters;
+import static org.jetbrains.k2js.translate.utils.BindingUtils.isObjectDeclaration;
 import static org.jetbrains.k2js.translate.utils.JsAstUtils.assignment;
 import static org.jetbrains.k2js.translate.utils.JsAstUtils.setQualifier;
 import static org.jetbrains.k2js.translate.utils.JsDescriptorUtils.isConstructorDescriptor;
@@ -267,7 +268,12 @@ public final class CallTranslator extends AbstractTranslator {
 
     private boolean isDirectPropertyAccess() {
         return descriptor instanceof PropertyAccessorDescriptor &&
-               (context().isEcma5() || ((PropertyAccessorDescriptor) descriptor).getCorrespondingProperty().isObjectDeclaration());
+               (context().isEcma5() || isObjectAccessor((PropertyAccessorDescriptor) descriptor));
+    }
+
+    private boolean isObjectAccessor(@NotNull PropertyAccessorDescriptor propertyAccessorDescriptor) {
+        PropertyDescriptor correspondingProperty = propertyAccessorDescriptor.getCorrespondingProperty();
+        return isObjectDeclaration(bindingContext(), correspondingProperty);
     }
 
     @NotNull

js/js.translator/src/org/jetbrains/k2js/translate/utils/BindingUtils.java

@@ -298,4 +298,11 @@ public final class BindingUtils {
             @NotNull JetNamedFunction function) {
         return bindingContext.get(BindingContext.FUNCTION, function);
     }
+
+    public static boolean isObjectDeclaration(
+            @NotNull BindingContext bindingContext,
+            @NotNull PropertyDescriptor propertyDescriptor
+    ) {
+        return bindingContext.get(BindingContext.OBJECT_DECLARATION_CLASS, propertyDescriptor) != null;
+    }
 }