From 12ad0f5cf900043a416fee19cda97a46fe4dfcce Mon Sep 17 00:00:00 2001
From: Alexey Kudravtsev <cdr@jetbrains.com>
Date: Wed, 26 Jan 2005 17:07:10 +0300
Subject: [PATCH] (no message)

---
 .../source/parsing/ChameleonTransforming.java |  2 +-
 .../impl/schema/AnyXmlElementDescriptor.java  | 10 +--
 .../impl/schema/NullElementDescriptor.java    | 88 +++++++++++++++++++
 3 files changed, 94 insertions(+), 6 deletions(-)
 create mode 100644 source/com/intellij/xml/impl/schema/NullElementDescriptor.java

diff --git a/source/com/intellij/psi/impl/source/parsing/ChameleonTransforming.java b/source/com/intellij/psi/impl/source/parsing/ChameleonTransforming.java
index 9f9c5c9b2fc9..6f93d40a2660 100644
--- a/source/com/intellij/psi/impl/source/parsing/ChameleonTransforming.java
+++ b/source/com/intellij/psi/impl/source/parsing/ChameleonTransforming.java
@@ -27,7 +27,7 @@ public class ChameleonTransforming implements Constants {
 
       TreeElement newElement = chameleon.transform(file.getTreeElement().getCharTable(), file.createLexer());
       final TreeElement treeNext = chameleon.getTreeNext();
-      TreeUtil.replace(chameleon, newElement);
+      TreeUtil.replaceWithList(chameleon, newElement);
       if (DebugUtil.CHECK) {
         if (newElement != null) {
           DebugUtil.checkTreeStructure(newElement);
diff --git a/source/com/intellij/xml/impl/schema/AnyXmlElementDescriptor.java b/source/com/intellij/xml/impl/schema/AnyXmlElementDescriptor.java
index cbab6491a493..bd1066c3e12a 100644
--- a/source/com/intellij/xml/impl/schema/AnyXmlElementDescriptor.java
+++ b/source/com/intellij/xml/impl/schema/AnyXmlElementDescriptor.java
@@ -13,17 +13,17 @@ import com.intellij.psi.PsiSubstitutor;
 import com.intellij.psi.scope.PsiScopeProcessor;
 import com.intellij.psi.xml.XmlAttribute;
 import com.intellij.psi.xml.XmlTag;
-import com.intellij.xml.XmlAttributeDescriptor;
-import com.intellij.xml.XmlNSDescriptor;
-import com.intellij.xml.XmlElementDescriptor;
 import com.intellij.util.ArrayUtil;
+import com.intellij.xml.XmlAttributeDescriptor;
+import com.intellij.xml.XmlElementDescriptor;
+import com.intellij.xml.XmlNSDescriptor;
 
 public  class AnyXmlElementDescriptor implements XmlElementDescriptor {
   private final XmlElementDescriptor myParentDescriptor;
   private final XmlNSDescriptor myXmlNSDescriptor;
 
   public AnyXmlElementDescriptor(XmlElementDescriptor parentDescriptor, XmlNSDescriptor xmlNSDescriptor) {
-    myParentDescriptor = parentDescriptor;
+    myParentDescriptor = parentDescriptor == null ? NullElementDescriptor.getInstance() : parentDescriptor;
     myXmlNSDescriptor = xmlNSDescriptor;
   }
 
@@ -67,7 +67,7 @@ public  class AnyXmlElementDescriptor implements XmlElementDescriptor {
   }
 
   public XmlElementDescriptor getElementDescriptor(XmlTag tag){
-    return myParentDescriptor!=null ? myParentDescriptor.getElementDescriptor(tag):null;
+    return myParentDescriptor.getElementDescriptor(tag);
   }
 
   public XmlAttributeDescriptor[] getAttributesDescriptors() {
diff --git a/source/com/intellij/xml/impl/schema/NullElementDescriptor.java b/source/com/intellij/xml/impl/schema/NullElementDescriptor.java
new file mode 100644
index 000000000000..8c41d3acbcf4
--- /dev/null
+++ b/source/com/intellij/xml/impl/schema/NullElementDescriptor.java
@@ -0,0 +1,88 @@
+/**
+ * @author cdr
+ */
+package com.intellij.xml.impl.schema;
+
+import com.intellij.xml.XmlElementDescriptor;
+import com.intellij.xml.XmlAttributeDescriptor;
+import com.intellij.xml.XmlNSDescriptor;
+import com.intellij.psi.xml.XmlTag;
+import com.intellij.psi.xml.XmlAttribute;
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiSubstitutor;
+import com.intellij.psi.scope.PsiScopeProcessor;
+
+public class NullElementDescriptor implements XmlElementDescriptor {
+  private static final NullElementDescriptor INSTANCE = new NullElementDescriptor();
+
+  public static NullElementDescriptor getInstance() {
+    return INSTANCE;
+  }
+
+  private NullElementDescriptor() {
+  }
+
+  public String getQualifiedName() {
+    return null;
+  }
+
+  public String getDefaultName() {
+    return null;
+  }
+
+  //todo: refactor to support full DTD spec
+  public XmlElementDescriptor[] getElementsDescriptors(XmlTag context) {
+    return new XmlElementDescriptor[0];
+  }
+
+  public XmlElementDescriptor getElementDescriptor(XmlTag childTag) {
+    return null;
+  }
+
+  public XmlAttributeDescriptor[] getAttributesDescriptors() {
+    return new XmlAttributeDescriptor[0];
+  }
+
+  public XmlAttributeDescriptor getAttributeDescriptor(String attributeName) {
+    return null;
+  }
+
+  public XmlAttributeDescriptor getAttributeDescriptor(XmlAttribute attribute) {
+    return null;
+  }
+
+  public XmlNSDescriptor getNSDescriptor() {
+    return null;
+  }
+
+  public int getContentType() {
+    return 0;
+  }
+
+  public PsiElement getDeclaration() {
+    return null;
+  }
+
+  public boolean processDeclarations(PsiElement context,
+                                     PsiScopeProcessor processor,
+                                     PsiSubstitutor substitutor,
+                                     PsiElement lastElement,
+                                     PsiElement place) {
+    return false;
+  }
+
+  public String getName(PsiElement context) {
+    return null;
+  }
+
+  public String getName() {
+    return null;
+  }
+
+  public void init(PsiElement element) {
+  }
+
+  public Object[] getDependences() {
+    return new Object[0];
+  }
+}
\ No newline at end of file