hw3
Class NodeVisitor

java.lang.Object
  hw3.ReflectiveVisitor
      hw3.NodeVisitor

Direct Known Subclasses:

ClassSemanticsVisitor, ClassSymtabVisitor, ClassTypeSetVisitor, DumpNodeVisitor, SymtabVisitor

public abstract class NodeVisitor
extends ReflectiveVisitor

Visitor idea adapted from http://www.javaworld.com/javaworld/javatips/jw-javatip98.html

Field Summary

protected int	level
protected java.io.PrintStream	ps

Fields inherited from class hw3.ReflectiveVisitor

debug

Constructor Summary

NodeVisitor()

Method Summary

void	defaultVisit(java.lang.Object o) Default visitation if nothing suitable is found
void	err(java.io.PrintStream ps, java.lang.String s)
void	err(java.lang.String s)
void	out(java.io.PrintStream ps, java.lang.String s)
void	out(java.lang.String s)
void	setPrintStream(java.io.PrintStream ps) Change the output stream.
protected void	visitChildren(AbstractNode n) Useful to be able to visit all children.

Methods inherited from class hw3.ReflectiveVisitor

dispatch, getBestMethodFor, perform, performVisit

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

level

protected int level

ps

protected java.io.PrintStream ps

Constructor Detail

NodeVisitor

public NodeVisitor()

Method Detail

setPrintStream

public void setPrintStream(java.io.PrintStream ps)

Change the output stream. Default is System.out

defaultVisit

public void defaultVisit(java.lang.Object o)

Default visitation if nothing suitable is found

Specified by:

defaultVisit in class ReflectiveVisitor

visitChildren

protected final void visitChildren(AbstractNode n)

Useful to be able to visit all children. The level instance variable is available to enhance your output (indent if you like)

err

public void err(java.lang.String s)

err

public void err(java.io.PrintStream ps,
                java.lang.String s)

out

public void out(java.lang.String s)

out

public void out(java.io.PrintStream ps,
                java.lang.String s)