1.1 --- a/samples/visitor/notevolutionready/src-api2.0/org/apidesign/visitor/notevolutionready/Language.java	Sat Jun 14 10:32:31 2008 +0200
     1.2 +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.3 @@ -1,53 +0,0 @@
     1.4 -package org.apidesign.visitor.notevolutionready;
     1.5 -
     1.6 -public final class Language {
     1.7 -    private Language() { }
     1.8 -    
     1.9 -    public static abstract class Expression {
    1.10 -        public abstract void visit(Visitor v);
    1.11 -    }
    1.12 -    public static final class Plus extends Expression {
    1.13 -        private final Expression first;
    1.14 -        private final Expression second;
    1.15 -        
    1.16 -        public Plus(Expression first, Expression second) {
    1.17 -            this.first = first;
    1.18 -            this.second = second;
    1.19 -        }
    1.20 -        public Expression getFirst() { return first; }
    1.21 -        public Expression getSecond() { return second; }
    1.22 -        @Override
    1.23 -        public void visit(Visitor v) { v.visitPlus(this); }
    1.24 -    }
    1.25 -    public static final class Number extends Expression {
    1.26 -        private final int value;
    1.27 -        public Number(int value) { this.value = value; }
    1.28 -        public int getValue() { return value; }
    1.29 -        @Override
    1.30 -        public void visit(Visitor v) { v.visitNumber(this); }
    1.31 -    }
    1.32 -    // BEGIN: visitor.notevolutionready.v2
    1.33 -    /** @since 2.0 */
    1.34 -    public static final class Minus extends Expression {
    1.35 -        private final Expression first;
    1.36 -        private final Expression second;
    1.37 -        
    1.38 -        public Minus(Expression first, Expression second) {
    1.39 -            this.first = first;
    1.40 -            this.second = second;
    1.41 -        }
    1.42 -        public Expression getFirst() { return first; }
    1.43 -        public Expression getSecond() { return second; }
    1.44 -        public void visit(Visitor v) { 
    1.45 -            /* now what? add new method to an interface!? */
    1.46 -            v.visitMinus(this);
    1.47 -        }
    1.48 -    }
    1.49 -    // END: visitor.notevolutionready.v2
    1.50 -
    1.51 -    public interface Visitor {
    1.52 -        public void visitPlus(Plus s);
    1.53 -        public void visitMinus(Minus s);
    1.54 -        public void visitNumber(Number n);
    1.55 -    }
    1.56 -}