Allow top-level local delegated properties in scripts

compiler/backend/src/org/jetbrains/kotlin/codegen/PropertyCodegen.java

@@ -445,6 +445,10 @@ public class PropertyCodegen {
         else if (parent instanceof KtFile) {
             container = (KtFile) parent;
         }
+        else if (KtPsiUtil.isScriptDeclaration(property)) {
+            container = KtPsiUtil.getScript(property);
+            assert  container != null : "Script declaration for property '" + property.getText() + "' should be not null!";
+        }
         else {
             throw new UnsupportedOperationException("Unknown delegated property container: " + parent);
         }

compiler/backend/src/org/jetbrains/kotlin/codegen/ScriptCodegen.java

@@ -69,6 +69,7 @@ public class ScriptCodegen extends MemberCodegen<KtScript> {
     private final KtScript scriptDeclaration;
     private final ScriptContext context;
     private final ScriptDescriptor scriptDescriptor;
+    private final Type classAsmType;
 
     private ScriptCodegen(
             @NotNull KtScript scriptDeclaration,
@@ -80,16 +81,15 @@ public class ScriptCodegen extends MemberCodegen<KtScript> {
         this.scriptDeclaration = scriptDeclaration;
         this.context = context;
         this.scriptDescriptor = context.getScriptDescriptor();
+        classAsmType = typeMapper.mapClass(context.getContextDescriptor());
     }
 
     @Override
     protected void generateDeclaration() {
-        Type classType = typeMapper.mapClass(context.getContextDescriptor());
-
         v.defineClass(scriptDeclaration,
                       V1_6,
                       ACC_PUBLIC | ACC_SUPER,
-                      classType.getInternalName(),
+                      classAsmType.getInternalName(),
                       null,
                       "java/lang/Object",
                       ArrayUtil.EMPTY_STRING_ARRAY);
@@ -103,6 +103,11 @@ public class ScriptCodegen extends MemberCodegen<KtScript> {
                        context.intoFunction(scriptDescriptor.getUnsubstitutedPrimaryConstructor()));
     }
 
+    @Override
+    protected void generateSyntheticParts() {
+        generatePropertyMetadataArrayFieldIfNeeded(classAsmType);
+    }
+
     @Override
     protected void generateKotlinMetadataAnnotation() {
         // TODO