Hello, I made a tool that measure some cohesion metrics on the Java source files, but these metrics depends that you can determine the list of attributes that are accessed by the method, to do this I made a parser that extract the method code, but I got some problems, so I ask if there any tool to parse the Java file and extract the method code as text ?
Thanks,
A pretty old tool to decompile java-classes is jad. It works fine up to jdk 1.5.
Working on the class files may indeed be easier (more tools for it), but there seem to be some Java source parsers as well. "javaparser" looks nice: http://code.google.com/p/javaparser/
I'm skeptical that what you ask is what you want. Supposedly you had the source code, how would you then determine the list of attributes that are accessed?
Instead, you really do need to walk the bytecode, and look for getfield and setfield opcodes. BCEL is the proper approach to do that.
Probably you will be satisfied with Eclipse AST Parser.
This is how you can use it: http://www.ibm.com/developerworks/opensource/library/os-ast/
Use ASM its pretty easy to "analyze" a class for whatever you wish. To solve your problem if i understand it correctly you basically write a visitor and watch out for the fields within said method.
To get at the fine details of a method body, you'll need a Java parser. To know what each symbol in the Java code represents, you'll need something that can build what amounts to a symbol table for each method/class/package.
The Java Front End is a full-featured Java parser which builds symbol tables for a set of Java source files (using class files for unavailable source). The Java Front End builds ASTs, and can be used to split those ASTs into subtrees for methods, and a prettyprinter can regenerate the text of each method (including any comments). This is all built on top of a program transformation system, DMS.