Re: Finding unused public methods and classes

Chris <spam_me_not@goaway.com> wrote or quoted in
Message-ID: <454507a8$0$14802$9a6e19ea@news.newshosting.com>:


I think that writing a class to do that is one of simple ways.

For example,

<code>

//
// Untested ...
//

public class XXXXX {

    List<String> sources;

    void process() {

        loadAllSourceFiles();
        processMethods();
    }

    void loadAllSourceFiles() {

        sources = new ArrayList<String>();

        // recursive method will be required.
        // read each source file and add her to sources;
    }

    class Method {

        String signr; // ex: void xxxx(int x, int y)
        Pattern pat;
        int refCount;

        public Method(String name, String signr) {

            this.signr = signr;

            //
            // Maybe,
            // "\\b" + name + "//s*\\(.*\\);"
            //
            pat = Pattern.compile(" ... ");
        }
    }

    void processMethods() {

        List<Method> ls = getAllMethods();
        List<Method> rs = removeRefMethods(ls);
        print(rs);
    }

    List<Method> getAllMethods() {
                                // LinkedList
        List<Method> ls = new ArrayList<Method>();

        //
        // Maybe ..
        //
        // "\\s+(public\\s+\\w+\\s+(\\w+)\\(.*\\))"
        //
        // group 1 is signature.
        // group 2 is method name.
        //

        Pattern pat = Pattern.compile(" ... ");

        for (String src : sources) {

            Matcher m = pat.matcher(src);

            if (m.find()) {

                 //
                 // add to ls
                 //
            }
        }
        return ls;
    }

    List<Method> removeRefMethods(List<Method> ms) {

        List<Method> ls = new ArrayList<Method>();

        for (String src : sources) {

            for (Method m : ms) {

                 if (!m.isRef && m.pat.matcher(src).find()) {

                      m.isRef = true;
                      ls.add(m);
                 }
             }
         }
         return ls;
    }

    void print(List<Method> ls) {

        // to console or a file
    }

}
</code>