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S-Expression support for Java

There is a newer version: 0.2

package com.laamella.sexpression.visitor;

import com.laamella.sexpression.model.Atom;
import com.laamella.sexpression.model.AtomList;
import com.laamella.sexpression.model.Comment;

public interface Visitor {
    R accept(Atom atom, A arg) throws Exception;

    R accept(AtomList atomList, A arg) throws Exception;

    R accept(Comment comment, A arg) throws Exception;
    
    class Adapter implements Visitor {

        @Override
        public R accept(Atom atom, A arg) throws Exception {
            return null;
        }

        @Override
        public R accept(AtomList atomList, A arg) throws Exception {
            return null;
        }

        @Override
        public R accept(Comment comment, A arg) throws Exception {
            return null;
        }
    }
}