diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/parsing/JetParserDefinition.java b/compiler/frontend/src/org/jetbrains/jet/lang/parsing/JetParserDefinition.java
index 52bba964f59..893ecaeceae 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/parsing/JetParserDefinition.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/parsing/JetParserDefinition.java
@@ -106,7 +106,7 @@ public class JetParserDefinition implements ParserDefinition {
 
     @Override
     public PsiFile createFile(FileViewProvider fileViewProvider) {
-        return new JetFile(fileViewProvider);
+        return new JetFile(fileViewProvider, false);
     }
 
     @Override
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetCodeFragmentImpl.java b/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetCodeFragmentImpl.java
index e8c7450a03f..d3932448996 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetCodeFragmentImpl.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetCodeFragmentImpl.java
@@ -31,7 +31,7 @@ public class JetCodeFragmentImpl extends JetFile implements PsiCodeFragment {
 
     public JetCodeFragmentImpl(Project project, String name, CharSequence text, IElementType elementType, PsiElement context) {
         super(((PsiManagerEx) PsiManager.getInstance(project)).getFileManager().createFileViewProvider(
-                new LightVirtualFile(name, JetFileType.INSTANCE, text), true));
+                new LightVirtualFile(name, JetFileType.INSTANCE, text), true), false);
         ((SingleRootFileViewProvider)getViewProvider()).forceCachedPsi(this);
         init(TokenType.CODE_FRAGMENT, elementType);
         this.context = context;
diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetFile.java b/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetFile.java
index 14b66af3329..ea4f138e853 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetFile.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/psi/JetFile.java
@@ -18,9 +18,22 @@ package org.jetbrains.jet.lang.psi;
 
 import com.intellij.extapi.psi.PsiFileBase;
 import com.intellij.lang.ASTNode;
+import com.intellij.lang.FileASTNode;
+import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.fileTypes.FileType;
+import com.intellij.openapi.util.text.StringUtil;
+import com.intellij.openapi.vfs.VirtualFile;
+import com.intellij.openapi.vfs.VirtualFileWithId;
 import com.intellij.psi.FileViewProvider;
 import com.intellij.psi.PsiElementVisitor;
+import com.intellij.psi.PsiFile;
+import com.intellij.psi.PsiLock;
+import com.intellij.psi.stubs.ObjectStubTree;
+import com.intellij.psi.stubs.StubBase;
+import com.intellij.psi.stubs.StubTree;
+import com.intellij.psi.stubs.StubTreeLoader;
+import com.intellij.psi.tree.IElementType;
+import com.intellij.psi.tree.IStubFileElementType;
 import com.intellij.psi.util.PsiTreeUtil;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -32,8 +45,21 @@ import org.jetbrains.jet.plugin.JetLanguage;
 import java.util.List;
 
 public class JetFile extends PsiFileBase implements JetDeclarationContainer, JetElement {
-    public JetFile(FileViewProvider viewProvider) {
+
+    private final boolean isCompiled;
+
+    public JetFile(FileViewProvider viewProvider, boolean compiled) {
         super(viewProvider, JetLanguage.INSTANCE);
+        this.isCompiled = compiled;
+    }
+
+    @Override
+    public FileASTNode getNode() {
+        return super.getNode();
+    }
+
+    public boolean isCompiled() {
+        return isCompiled;
     }
 
     @Override
@@ -76,7 +102,7 @@ public class JetFile extends PsiFileBase implements JetDeclarationContainer, Jet
 
     @Nullable
     public String getPackageName() {
-        PsiJetFileStub stub = (PsiJetFileStub)getStub();
+        PsiJetFileStub stub = (PsiJetFileStub) getStub();
         if (stub != null) {
             return stub.getPackageName();
         }
@@ -91,7 +117,7 @@ public class JetFile extends PsiFileBase implements JetDeclarationContainer, Jet
     }
 
     public boolean isScript() {
-        PsiJetFileStub stub = (PsiJetFileStub)getStub();
+        PsiJetFileStub stub = (PsiJetFileStub) getStub();
         if (stub != null) {
             return stub.isScript();
         }
diff --git a/idea/src/org/jetbrains/jet/plugin/libraries/JetDummyClassFileViewProvider.java b/idea/src/org/jetbrains/jet/plugin/libraries/JetDummyClassFileViewProvider.java
index 95c196634d6..a94d7832e3d 100644
--- a/idea/src/org/jetbrains/jet/plugin/libraries/JetDummyClassFileViewProvider.java
+++ b/idea/src/org/jetbrains/jet/plugin/libraries/JetDummyClassFileViewProvider.java
@@ -43,7 +43,7 @@ class JetDummyClassFileViewProvider extends UserDataHolderBase implements FileVi
         virtualFile = file;
         this.text = text;
 
-        jetFile = new JetFile(this) {
+        jetFile = new JetFile(this, true) {
             @Override
             public VirtualFile getVirtualFile() {
                 return virtualFile; // overridden to return not-null; original method returns null when isEventSystemEnabled() = false