Java Class File Parser for Ruby

javaclass-rb (Java Class File Parser for Ruby) is a parser and disassembler for Java class files, similar to the javap command. It provides access to the package, protected, and public fields and methods of the classes passed to it together with a list of all outgoing references.

I am still doing Java most of the time. I used to be quite enthusiastic about it, but after 11 years I can see the advantages of being a polyglot. So I use Ruby for all kind of stuff, just for fun. When I needed some Java class analysis I wrote it in Ruby. As I am a puritan, I did not want to call javap from my script, so I started disassembling the class files, which might be the base for some serious static code analysis tools. (I started adding methods to that end...)

• searching and accessing class files
• parsing meta data of class files
• displaying this meta data
• analysing the structure of class files (down to field/method level)
• calculating numbers based on this structure
• calculating higher metrics
• "static code analysis"

• parsing the actual byte code
• verifying byte code
• generating byte code
• generating class files
• executing byte code

Module JavaClass is the entry point for basic functions. All advanced functions are available in Object through the JavaClass::Dsl::Mixin. The main class or the parser is JavaClass::ClassFile::JavaClassHeader which provides access to all information of a Java class file. Read the API RDoc.

The 2-Clause BSD License, see license.txt in repository.