Some recursive visitors to implement PsiRecursiveVisitor

RegExpSupport/src/org/intellij/lang/regexp/psi/RegExpRecursiveElementVisitor.java

@@ -15,7 +15,9 @@
  */
 package org.intellij.lang.regexp.psi;
 
-public class RegExpRecursiveElementVisitor extends RegExpElementVisitor {
+import com.intellij.psi.PsiRecursiveVisitor;
+
+public class RegExpRecursiveElementVisitor extends RegExpElementVisitor implements PsiRecursiveVisitor {
     public void visitRegExpElement(RegExpElement element) {
         element.acceptChildren(this);
     }

json/src/com/intellij/json/psi/impl/JsonRecursiveElementVisitor.java

@@ -2,11 +2,12 @@ package com.intellij.json.psi.impl;
 
 import com.intellij.json.psi.JsonElementVisitor;
 import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiRecursiveVisitor;
 
 /**
  * @author Mikhail Golubev
  */
-public class JsonRecursiveElementVisitor extends JsonElementVisitor {
+public class JsonRecursiveElementVisitor extends JsonElementVisitor implements PsiRecursiveVisitor {
 
   public void visitElement(final PsiElement element) {
     element.acceptChildren(this);

platform/core-impl/src/com/intellij/psi/impl/source/tree/RecursiveTreeElementVisitor.java

@@ -16,7 +16,9 @@
 
 package com.intellij.psi.impl.source.tree;
 
-public abstract class RecursiveTreeElementVisitor extends TreeElementVisitor{
+import com.intellij.psi.PsiRecursiveVisitor;
+
+public abstract class RecursiveTreeElementVisitor extends TreeElementVisitor implements PsiRecursiveVisitor {
   @Override public void visitLeaf(LeafElement leaf) {
     visitNode(leaf);
   }

platform/core-impl/src/com/intellij/psi/impl/source/tree/RecursiveTreeElementWalkingVisitor.java

@@ -17,10 +17,11 @@
 package com.intellij.psi.impl.source.tree;
 
 import com.intellij.lang.ASTNode;
+import com.intellij.psi.PsiRecursiveVisitor;
 import com.intellij.util.WalkingState;
 import org.jetbrains.annotations.NotNull;
 
-public abstract class RecursiveTreeElementWalkingVisitor extends TreeElementVisitor {
+public abstract class RecursiveTreeElementWalkingVisitor extends TreeElementVisitor implements PsiRecursiveVisitor {
   private final boolean myDoTransform;
 
   protected RecursiveTreeElementWalkingVisitor() {

plugins/groovy/groovy-psi/src/org/jetbrains/plugins/groovy/lang/psi/GroovyRecursiveElementVisitor.java

@@ -15,12 +15,13 @@
  */
 package org.jetbrains.plugins.groovy.lang.psi;
 
+import com.intellij.psi.PsiRecursiveVisitor;
 import org.jetbrains.annotations.NotNull;
 
 /**
  * @author ven
  */
-public abstract class GroovyRecursiveElementVisitor extends GroovyElementVisitor {
+public abstract class GroovyRecursiveElementVisitor extends GroovyElementVisitor implements PsiRecursiveVisitor {
 
   @Override
   public void visitElement(@NotNull GroovyPsiElement element) {

python/psi-api/src/com/jetbrains/python/psi/PyRecursiveElementVisitor.java

@@ -16,11 +16,12 @@
 package com.jetbrains.python.psi;
 
 import com.intellij.psi.PsiElement;
+import com.intellij.psi.PsiRecursiveVisitor;
 
 /**
  * @author yole
  */
-public class PyRecursiveElementVisitor extends PyElementVisitor {
+public class PyRecursiveElementVisitor extends PyElementVisitor implements PsiRecursiveVisitor {
   public void visitElement(final PsiElement element) {
     element.acceptChildren(this);
   }

xml/xml-psi-api/src/com/intellij/psi/XmlRecursiveElementVisitor.java

@@ -21,7 +21,7 @@ package com.intellij.psi;
 
 import java.util.List;
 
-public class XmlRecursiveElementVisitor extends XmlElementVisitor {
+public class XmlRecursiveElementVisitor extends XmlElementVisitor implements PsiRecursiveVisitor {
   private final boolean myVisitAllFileRoots;
 
   public XmlRecursiveElementVisitor() {

xml/xml-psi-api/src/com/intellij/psi/XmlRecursiveElementWalkingVisitor.java

@@ -21,7 +21,7 @@ package com.intellij.psi;
 
 import java.util.List;
 
-public class XmlRecursiveElementWalkingVisitor extends XmlElementVisitor {
+public class XmlRecursiveElementWalkingVisitor extends XmlElementVisitor implements PsiRecursiveVisitor {
   private final boolean myVisitAllFileRoots;
   private final PsiWalkingState myWalkingState = new PsiWalkingState(this){};