NamespaceLikeBuilder instead of NamespaceLike

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

@@ -48,15 +48,6 @@ public class MutableClassDescriptor extends MutableClassDescriptorLite {
     public MutableClassDescriptor(@NotNull BindingTrace trace, @NotNull DeclarationDescriptor containingDeclaration, @NotNull JetScope outerScope, ClassKind kind) {
         super(containingDeclaration, kind);
 
-        if (containingDeclaration instanceof ClassDescriptor
-                || containingDeclaration instanceof NamespaceLike
-                || containingDeclaration instanceof ModuleDescriptor
-                || containingDeclaration instanceof FunctionDescriptor)
-        {
-        } else {
-            throw new IllegalStateException();
-        }
-
         RedeclarationHandler redeclarationHandler = RedeclarationHandler.DO_NOTHING;
 
         setScopeForMemberLookup(new WritableScopeImpl(JetScope.EMPTY, this, redeclarationHandler).setDebugName("MemberLookup").changeLockLevel(WritableScope.LockLevel.BOTH));

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

@@ -79,6 +79,11 @@ public class MutableClassDescriptorLite extends MutableDeclarationDescriptor imp
     }
 
 
+    @NotNull
+    @Override
+    public DeclarationDescriptor getOwnerForChildren() {
+        return this;
+    }
 
     @Override
     public ClassObjectStatus setClassObjectDescriptor(@NotNull MutableClassDescriptorLite classObjectDescriptor) {

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

@@ -38,6 +38,12 @@ public class NamespaceDescriptorImpl extends AbstractNamespaceDescriptorImpl imp
         this.memberScope = memberScope;
     }
 
+    @NotNull
+    @Override
+    public DeclarationDescriptor getOwnerForChildren() {
+        return this;
+    }
+
     @Override
     @NotNull
     public WritableScope getMemberScope() {

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

@@ -26,53 +26,10 @@ import java.util.List;
 /**
  * @author abreslav
  */
-public interface NamespaceLike extends DeclarationDescriptor {
+public interface NamespaceLike {
 
-    abstract class Adapter implements NamespaceLike {
-        private final DeclarationDescriptor descriptor;
-
-        public Adapter(DeclarationDescriptor descriptor) {
-            this.descriptor = descriptor;
-        }
-
-        @Override
-        @NotNull
-        public DeclarationDescriptor getOriginal() {
-            return descriptor.getOriginal();
-        }
-
-        @Override
-        @Nullable
-        public DeclarationDescriptor getContainingDeclaration() {
-            return descriptor.getContainingDeclaration();
-        }
-
-        @Override
-        public DeclarationDescriptor substitute(TypeSubstitutor substitutor) {
-            return descriptor.substitute(substitutor);
-        }
-
-        @Override
-        public <R, D> R accept(DeclarationDescriptorVisitor<R, D> visitor, D data) {
-            return descriptor.accept(visitor, data);
-        }
-
-        @Override
-        public void acceptVoid(DeclarationDescriptorVisitor<Void, Void> visitor) {
-            descriptor.acceptVoid(visitor);
-        }
-
-        @Override
-        public List<AnnotationDescriptor> getAnnotations() {
-            return descriptor.getAnnotations();
-        }
-
-        @Override
-        @NotNull
-        public String getName() {
-            return descriptor.getName();
-        }
-    }
+    @NotNull
+    DeclarationDescriptor getOwnerForChildren();
 
     @Nullable
     NamespaceDescriptorImpl getNamespace(String name);

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

@@ -102,7 +102,7 @@ public class AnalyzingUtils {
             @NotNull JetControlFlowDataTraceFactory flowDataTraceFactory,
             @NotNull BindingTraceContext bindingTraceContext) {
 
-        ModuleDescriptor owner = new ModuleDescriptor("<module>");
+        final ModuleDescriptor owner = new ModuleDescriptor("<module>");
 
         final WritableScope scope = new WritableScopeImpl(
                 JetScope.EMPTY, owner,
@@ -136,7 +136,13 @@ public class AnalyzingUtils {
         });
 
         TopDownAnalyzer.process(project, bindingTraceContext, scope,
-            new NamespaceLike.Adapter(owner) {
+            new NamespaceLike() {
+
+                @NotNull
+                @Override
+                public DeclarationDescriptor getOwnerForChildren() {
+                    return owner;
+                }
 
                 @Override
                 public NamespaceDescriptorImpl getNamespace(String name) {

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

@@ -144,7 +144,7 @@ public class DeclarationResolver {
             declaration.accept(new JetVisitorVoid() {
                 @Override
                 public void visitNamedFunction(JetNamedFunction function) {
-                    SimpleFunctionDescriptor functionDescriptor = descriptorResolver.resolveFunctionDescriptor(namespaceLike, scopeForFunctions, function, context.getTrace());
+                    SimpleFunctionDescriptor functionDescriptor = descriptorResolver.resolveFunctionDescriptor(namespaceLike.getOwnerForChildren(), scopeForFunctions, function, context.getTrace());
                     namespaceLike.addFunctionDescriptor(functionDescriptor);
                     context.getFunctions().put(function, functionDescriptor);
                     context.getDeclaringScopes().put(function, scopeForFunctions);
@@ -152,7 +152,7 @@ public class DeclarationResolver {
 
                 @Override
                 public void visitProperty(JetProperty property) {
-                    PropertyDescriptor propertyDescriptor = descriptorResolver.resolvePropertyDescriptor(namespaceLike, scopeForPropertyInitializers, property, context.getTrace());
+                    PropertyDescriptor propertyDescriptor = descriptorResolver.resolvePropertyDescriptor(namespaceLike.getOwnerForChildren(), scopeForPropertyInitializers, property, context.getTrace());
                     namespaceLike.addPropertyDescriptor(propertyDescriptor);
                     context.getProperties().put(property, propertyDescriptor);
                     context.getDeclaringScopes().put(property, scopeForPropertyInitializers);
@@ -166,7 +166,7 @@ public class DeclarationResolver {
 
                 @Override
                 public void visitObjectDeclaration(JetObjectDeclaration declaration) {
-                    PropertyDescriptor propertyDescriptor = descriptorResolver.resolveObjectDeclarationAsPropertyDescriptor(namespaceLike, declaration, context.getObjects().get(declaration), context.getTrace());
+                    PropertyDescriptor propertyDescriptor = descriptorResolver.resolveObjectDeclarationAsPropertyDescriptor(namespaceLike.getOwnerForChildren(), declaration, context.getObjects().get(declaration), context.getTrace());
                     namespaceLike.addPropertyDescriptor(propertyDescriptor);
                 }
 

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

@@ -169,9 +169,15 @@ public class TopDownAnalyzer {
             @NotNull Project project,
             @NotNull final BindingTrace trace,
             @NotNull JetScope outerScope,
-            @NotNull DeclarationDescriptor containingDeclaration,
+            @NotNull final DeclarationDescriptor containingDeclaration,
             @NotNull JetObjectDeclaration object) {
-        process(project, trace, outerScope, new NamespaceLike.Adapter(containingDeclaration) {
+        process(project, trace, outerScope, new NamespaceLike() {
+
+            @NotNull
+            @Override
+            public DeclarationDescriptor getOwnerForChildren() {
+                return containingDeclaration;
+            }
 
             @Override
             public NamespaceDescriptorImpl getNamespace(String name) {

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

@@ -123,7 +123,7 @@ public class TypeHierarchyResolver {
 
                 @Override
                 public void visitClass(JetClass klass) {
-                    MutableClassDescriptor mutableClassDescriptor = new MutableClassDescriptor(context.getTrace(), owner, outerScope, getClassKind(klass));
+                    MutableClassDescriptor mutableClassDescriptor = new MutableClassDescriptor(context.getTrace(), owner.getOwnerForChildren(), outerScope, getClassKind(klass));
                     context.getTrace().record(FQNAME_TO_CLASS_DESCRIPTOR, JetPsiUtil.getFQName(klass), mutableClassDescriptor);
 
                     if (klass.hasModifier(JetTokens.ENUM_KEYWORD)) {
@@ -166,7 +166,7 @@ public class TypeHierarchyResolver {
                 }
 
                 private MutableClassDescriptor createClassDescriptorForObject(@NotNull JetClassOrObject declaration, @NotNull NamespaceLike owner, JetScope scope, ClassKind classKind) {
-                    MutableClassDescriptor mutableClassDescriptor = new MutableClassDescriptor(context.getTrace(), owner, scope, classKind) {
+                    MutableClassDescriptor mutableClassDescriptor = new MutableClassDescriptor(context.getTrace(), owner.getOwnerForChildren(), scope, classKind) {
                         @Override
                         public ClassObjectStatus setClassObjectDescriptor(@NotNull MutableClassDescriptorLite classObjectDescriptor) {
                             return ClassObjectStatus.NOT_ALLOWED;
@@ -237,7 +237,7 @@ public class TypeHierarchyResolver {
 
             currentOwner = namespaceDescriptor;
 
-            context.getTrace().record(REFERENCE_TARGET, nameExpression, currentOwner);
+            context.getTrace().record(REFERENCE_TARGET, nameExpression, currentOwner.getOwnerForChildren());
             context.getTrace().record(RESOLUTION_SCOPE, nameExpression, outerScope);
 
             outerScope = namespaceDescriptor.getMemberScope();
@@ -254,7 +254,7 @@ public class TypeHierarchyResolver {
         NamespaceDescriptorImpl namespaceDescriptor = owner.getNamespace(name);
         if (namespaceDescriptor == null) {
             namespaceDescriptor = new NamespaceDescriptorImpl(
-                    owner.getOriginal(),
+                    owner.getOwnerForChildren(),
                     Collections.<AnnotationDescriptor>emptyList(), // TODO: annotations
                     name
             );