XMLVM
=====

XMLVM translates a Java class file to XML. This means that the content
of an arbitrary class file is represented as XML. This XML file can
then be translated via an XSLT stylesheet to other representations. As
an example, this package includes an XSLT that translates the XML to
C++. This effectively translates Java programs to C++ program.

The following link contains the official specification of the Java
Virtual Machine:
http://java.sun.com/docs/books/vmspec/2nd-edition/html/VMSpecTOC.doc.html


Prerequisits:
-------------

- JDK 1.4
- g++
- Download: http://www.jdom.org/dist/binary/jdom-b10.tar.gz
  Extract jdom.jar and make sure that this jar file is
  included in your CLASSPATH
- Download: BCEL 5.1 from:
  http://jakarta.apache.org/site/binindex.cgi
  Extract bcel-5.1.jar and make sure that it is included in
  your CLASSPATH
- http://ant-contrib.sourceforge.net (not mandatory)


Running:
--------

- cd xmlvm/src/java2xmlvm
- export CLASSPATH=<path>/jdom.jar:<path>/bcel-5.1.jar:`pwd`:.
- javac org/xmlvm/Main.java
- cd ../../test
- Now you can select any one of the tests, e.g.,
  cd 1
  javac HelloWorld.java
- after compiling, you can run HelloWorld:
  java HelloWorld
- in particular notice, that the current directory containts
  the file HelloWorld.class
- The next command creates an XML version of this class file:
  java org.xmlvm.Main HelloWorld.class
- Take a look at the content of the file HelloWorld.xmlvm
- Now you can apply an XSLT stylesheet to translate the .xmlvm file
  to C++:
  xsltproc ../../src/xmlvm2cpp/xmlvm2cpp.xsl HelloWorld.xmlvm > HelloWorld.cpp
- Look at the content of file HelloWorld.cpp
- You can compile this file via:
- g++ -I../../src/xmlvm2cpp -o HelloWorld HelloWorld.cpp \
      ../../src/xmlvm2cpp/xmlvm.cpp
- Now you should have a binary called HelloWorld that you can run:
  ./HelloWorld