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+/*******************************************************************************
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+
+package net.sourceforge.phpdt.core.dom;
+
+/**
+ * A visitor for abstract syntax trees.
+ * <p>
+ * For each different concrete AST node type <i>T</i> there are
+ * a pair of methods:
+ * <ul>
+ * <li><code>public boolean visit(<i>T</i> node)</code> - Visits
+ * the given node to perform some arbitrary operation. If <code>true</code>
+ * is returned, the given node's child nodes will be visited next; however,
+ * if <code>false</code> is returned, the given node's child nodes will 
+ * not be visited. The default implementation provided by this class does
+ * nothing and returns <code>true</code> (with the exception of 
+ * {@link #visit(Javadoc) ASTVisitor.visit(Javadoc)}).
+ * Subclasses may reimplement this method as needed.</li>
+ * <li><code>public void endVisit(<i>T</i> node)</code> - Visits
+ * the given node to perform some arbitrary operation. When used in the
+ * conventional way, this method is called after all of the given node's
+ * children have been visited (or immediately, if <code>visit</code> returned
+ * <code>false</code>). The default implementation provided by this class does
+ * nothing. Subclasses may reimplement this method as needed.</li>
+ * </ul>
+ * </p>
+ * In addition, there are a pair of methods for visiting AST nodes in the 
+ * abstract, regardless of node type:
+ * <ul>
+ * <li><code>public void preVisit(ASTNode node)</code> - Visits
+ * the given node to perform some arbitrary operation. 
+ * This method is invoked prior to the appropriate type-specific
+ * <code>visit</code> method.
+ * The default implementation of this method does nothing.
+ * Subclasses may reimplement this method as needed.</li>
+ * <li><code>public void postVisit(ASTNode node)</code> - Visits
+ * the given node to perform some arbitrary operation. 
+ * This method is invoked after the appropriate type-specific
+ * <code>endVisit</code> method.
+ * The default implementation of this method does nothing.
+ * Subclasses may reimplement this method as needed.</li>
+ * </ul>
+ * <p>
+ * For nodes with list-valued properties, the child nodes within the list
+ * are visited in order. For nodes with multiple properties, the child nodes
+ * are visited in the order that most closely corresponds to the lexical
+ * reading order of the source program. For instance, for a type declaration
+ * node, the child ordering is: name, superclass, superinterfaces, and 
+ * body declarations.
+ * </p>
+ * <p>
+ * While it is possible to modify the tree in the visitor, care is required to
+ * ensure that the consequences are as expected and desirable.
+ * During the course of an ordinary visit starting at a given node, every node
+ * in the subtree is visited exactly twice, first with <code>visit</code> and
+ * then with <code>endVisit</code>. During a traversal of a stationary tree, 
+ * each node is either behind (after <code>endVisit</code>), ahead (before 
+ * <code>visit</code>), or in progress (between <code>visit</code> and
+ * the matching <code>endVisit</code>). Changes to the "behind" region of the
+ * tree are of no consequence to the visit in progress. Changes to the "ahead"
+ * region will be taken in stride. Changes to the "in progress" portion are
+ * the more interesting cases. With a node, the various properties are arranged
+ * in a linear list, with a cursor that separates the properties that have
+ * been visited from the ones that are still to be visited (the cursor
+ * is between the elements, rather than on an element). The cursor moves from
+ * the head to the tail of this list, advancing to the next position just
+ * <i>before</i> <code>visit</code> if called for that child. After the child
+ * subtree has been completely visited, the visit moves on the child 
+ * immediately after the cursor. Removing a child while it is being visited
+ * does not alter the course of the visit. But any children added at positions
+ * after the cursor are considered in the "ahead" portion and will be visited.
+ * </p>
+ * <p>
+ * Cases to watch out for:
+ * <ul>
+ * <li>Moving a child node further down the list. This could result in the
+ * child subtree being visited multiple times; these visits are sequential.</li>
+ * <li>Moving a child node up into an ancestor. If the new home for
+ * the node is in the "ahead" portion, the subtree will be visited 
+ * a second time; again, these visits are sequential.</li>
+ * <li>Moving a node down into a child. If the new home for
+ * the node is in the "ahead" portion, the subtree will be visited 
+ * a second time; in this case, the visits will be nested. In some cases,
+ * this can lead to a stack overflow or out of memory condition.</li>
+ * </ul>
+ * <p>Note that {@link LineComment} and {@link BlockComment} nodes are
+ * not normally visited in an AST because they are not considered
+ * part of main structure of the AST. Use 
+ * {@link CompilationUnit#getCommentList()} to find these additional
+ * comments nodes.
+ * </p>
+ * 
+ * @see org.eclipse.jdt.core.dom.ASTNode#accept(ASTVisitor)
+ */
+public abstract class ASTVisitor {
+
+	/**
+	 * Indicates whether doc tags should be visited by default.
+	 * @since 3.0
+	 */
+	private boolean visitDocTags;
+	
+	/**
+	 * Creates a new AST visitor instance.
+	 * <p>
+	 * For backwards compatibility, the visitor does not visit tag
+	 * elements below doc comments by default. Use 
+	 * {@link #ASTVisitor(boolean) ASTVisitor(true)}
+	 * for an visitor that includes doc comments by default.
+	 * </p>
+	 */
+	public ASTVisitor() {
+		this(false);
+	}
+	
+	/**
+	 * Creates a new AST visitor instance. 
+	 * 
+	 * @param visitDocTags <code>true</code> if doc comment tags are
+	 * to be visited by default, and <code>false</code> otherwise
+	 * @see Javadoc#tags()
+	 * @see #visit(Javadoc)
+	 * @since 3.0
+	 */
+	public ASTVisitor(boolean visitDocTags) {
+		this.visitDocTags = visitDocTags;
+	}
+	
+	/**
+	 * Visits the given AST node prior to the type-specific visit.
+	 * (before <code>visit</code>).
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void preVisit(ASTNode node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * Visits the given AST node following the type-specific visit
+	 * (after <code>endVisit</code>).
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void postVisit(ASTNode node) {
+		// default implementation: do nothing
+	}
+
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(AnnotationTypeDeclaration node) {
+		return true;
+	}
+
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(AnnotationTypeMemberDeclaration node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(AnonymousClassDeclaration node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ArrayAccess node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ArrayCreation node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ArrayInitializer node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ArrayType node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(AssertStatement node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(Assignment node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(Block node) {
+		return true;
+	}
+	
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * <p>Note: {@link LineComment} and {@link BlockComment} nodes are
+	 * not considered part of main structure of the AST. This method will
+	 * only be called if a client goes out of their way to visit this
+	 * kind of node explicitly.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.0
+	 */
+	public boolean visit(BlockComment node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(BooleanLiteral node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(BreakStatement node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(CastExpression node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(CatchClause node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(CharacterLiteral node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ClassInstanceCreation node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(CompilationUnit node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ConditionalExpression node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ConstructorInvocation node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ContinueStatement node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(DoStatement node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(EmptyStatement node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(EnhancedForStatement node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(EnumConstantDeclaration node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(EnumDeclaration node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ExpressionStatement node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(FieldAccess node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(FieldDeclaration node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ForStatement node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(IfStatement node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ImportDeclaration node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(InfixExpression node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(InstanceofExpression node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(Initializer node) {
+		return true;
+	}
+
+	/**
+	 * Visits the given AST node.
+	 * <p>
+	 * Unlike other node types, the boolean returned by the default
+	 * implementation is controlled by a constructor-supplied
+	 * parameter  {@link #ASTVisitor(boolean) ASTVisitor(boolean)} 
+	 * which is <code>false</code> by default.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @see #ASTVisitor()
+	 * @see #ASTVisitor(boolean)
+	 */
+	public boolean visit(Javadoc node) {
+		// visit tag elements inside doc comments only if requested
+		return this.visitDocTags;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(LabeledStatement node) {
+		return true;
+	}
+	
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * <p>Note: {@link LineComment} and {@link BlockComment} nodes are
+	 * not considered part of main structure of the AST. This method will
+	 * only be called if a client goes out of their way to visit this
+	 * kind of node explicitly.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.0
+	 */
+	public boolean visit(LineComment node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(MarkerAnnotation node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.0
+	 */
+	public boolean visit(MemberRef node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(MemberValuePair node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.0
+	 */
+	public boolean visit(MethodRef node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.0
+	 */
+	public boolean visit(MethodRefParameter node) {
+		return true;
+	}
+	
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(MethodDeclaration node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(MethodInvocation node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(Modifier node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(NormalAnnotation node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(NullLiteral node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(NumberLiteral node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(PackageDeclaration node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(ParameterizedType node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ParenthesizedExpression node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(PostfixExpression node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(PrefixExpression node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(PrimitiveType node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(QualifiedName node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(QualifiedType node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ReturnStatement node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(SimpleName node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(SimpleType node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(SingleMemberAnnotation node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(SingleVariableDeclaration node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(StringLiteral node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(SuperConstructorInvocation node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(SuperFieldAccess node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(SuperMethodInvocation node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(SwitchCase node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(SwitchStatement node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(SynchronizedStatement node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.0
+	 */
+	public boolean visit(TagElement node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.0
+	 */
+	public boolean visit(TextElement node) {
+		return true;
+	}
+
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ThisExpression node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(ThrowStatement node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(TryStatement node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(TypeDeclaration node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(TypeDeclarationStatement node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(TypeLiteral node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(TypeParameter node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(VariableDeclarationExpression node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(VariableDeclarationStatement node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(VariableDeclarationFragment node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 */
+	public boolean visit(WhileStatement node) {
+		return true;
+	}
+	
+	/**
+	 * Visits the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing and return true.
+	 * Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @return <code>true</code> if the children of this node should be
+	 * visited, and <code>false</code> if the children of this node should
+	 * be skipped
+	 * @since 3.1
+	 */
+	public boolean visit(WildcardType node) {
+		return true;
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(AnnotationTypeDeclaration node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(AnnotationTypeMemberDeclaration node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(AnonymousClassDeclaration node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ArrayAccess node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ArrayCreation node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ArrayInitializer node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ArrayType node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(AssertStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(Assignment node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(Block node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * <p>Note: {@link LineComment} and {@link BlockComment} nodes are
+	 * not considered part of main structure of the AST. This method will
+	 * only be called if a client goes out of their way to visit this
+	 * kind of node explicitly.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.0
+	 */
+	public void endVisit(BlockComment node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(BooleanLiteral node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(BreakStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(CastExpression node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(CatchClause node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(CharacterLiteral node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ClassInstanceCreation node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(CompilationUnit node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ConditionalExpression node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ConstructorInvocation node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ContinueStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(DoStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(EmptyStatement node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(EnhancedForStatement node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(EnumConstantDeclaration node) {
+		// default implementation: do nothing
+	}	
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(EnumDeclaration node) {
+		// default implementation: do nothing
+	}	
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ExpressionStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(FieldAccess node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(FieldDeclaration node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ForStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(IfStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ImportDeclaration node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(InfixExpression node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(InstanceofExpression node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(Initializer node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(Javadoc node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(LabeledStatement node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * <p>Note: {@link LineComment} and {@link BlockComment} nodes are
+	 * not considered part of main structure of the AST. This method will
+	 * only be called if a client goes out of their way to visit this
+	 * kind of node explicitly.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.0
+	 */
+	public void endVisit(LineComment node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(MarkerAnnotation node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.0
+	 */
+	public void endVisit(MemberRef node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(MemberValuePair node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.0
+	 */
+	public void endVisit(MethodRef node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.0
+	 */
+	public void endVisit(MethodRefParameter node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(MethodDeclaration node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(MethodInvocation node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(Modifier node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(NormalAnnotation node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(NullLiteral node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(NumberLiteral node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(PackageDeclaration node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(ParameterizedType node) {
+		// default implementation: do nothing
+	}	
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ParenthesizedExpression node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(PostfixExpression node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(PrefixExpression node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(PrimitiveType node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(QualifiedName node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(QualifiedType node) {
+		// default implementation: do nothing
+	}	
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ReturnStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(SimpleName node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(SimpleType node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(SingleMemberAnnotation node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(SingleVariableDeclaration node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(StringLiteral node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(SuperConstructorInvocation node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(SuperFieldAccess node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(SuperMethodInvocation node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(SwitchCase node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(SwitchStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(SynchronizedStatement node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.0
+	 */
+	public void endVisit(TagElement node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.0
+	 */
+	public void endVisit(TextElement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ThisExpression node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(ThrowStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(TryStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(TypeDeclaration node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(TypeDeclarationStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(TypeLiteral node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(TypeParameter node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(VariableDeclarationExpression node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(VariableDeclarationStatement node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(VariableDeclarationFragment node) {
+		// default implementation: do nothing
+	}
+
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 */
+	public void endVisit(WhileStatement node) {
+		// default implementation: do nothing
+	}
+	
+	/**
+	 * End of visit the given type-specific AST node.
+	 * <p>
+	 * The default implementation does nothing. Subclasses may reimplement.
+	 * </p>
+	 * 
+	 * @param node the node to visit
+	 * @since 3.1
+	 */
+	public void endVisit(WildcardType node) {
+		// default implementation: do nothing
+	}
+}