1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/samples/apifest1/day1/stackbasedsolution/src/org/netbeans/apifest/boolcircuit/CircuitFactory.java	Sat Jun 14 09:52:45 2008 +0200
     1.3 @@ -0,0 +1,50 @@
     1.4 +/*
     1.5 + * CircuitFactory.java
     1.6 + *
     1.7 + * Created on July 12, 2006, 3:01 PM
     1.8 + *
     1.9 + * To change this template, choose Tools | Template Manager
    1.10 + * and open the template in the editor.
    1.11 + */
    1.12 +
    1.13 +package org.netbeans.apifest.boolcircuit;
    1.14 +
    1.15 +import java.util.Stack;
    1.16 +
    1.17 +/**
    1.18 + *
    1.19 + */
    1.20 +public class CircuitFactory {
    1.21 +    
    1.22 +    /** Creates a new instance of CircuitFactory */
    1.23 +    private  CircuitFactory() {
    1.24 +    }
    1.25 +    
    1.26 +    public final static Circuit join (final Circuit c1, final Circuit c2, final Operation op) {
    1.27 +        return new Circuit () {
    1.28 +            public char evaluate(Stack input) throws IllegalArgumentException {
    1.29 +                return op.evaluate(c1.evaluate(input), c2.evaluate(input));
    1.30 +            }
    1.31 +        };
    1.32 +    }
    1.33 +    
    1.34 +    public final static Circuit getBasicCircuit (final Operation op) {
    1.35 +        return new Circuit () {
    1.36 +            public char evaluate(Stack<Character> input) throws IllegalArgumentException {
    1.37 +                // special handling of unary oparation
    1.38 +                if (op instanceof Operation.Neg) {
    1.39 +                    return op.evaluate(input.pop(), input.peek());
    1.40 +                } else {
    1.41 +                    return op.evaluate(input.pop(), input.pop());
    1.42 +                }
    1.43 +            }
    1.44 +        };
    1.45 +    }
    1.46 +    public final static Circuit getTrivialCircuit () {
    1.47 +        return new Circuit () {
    1.48 +            public char evaluate(Stack<Character> input) throws IllegalArgumentException {
    1.49 +                return input.peek();
    1.50 +            }
    1.51 +        };
    1.52 +    }
    1.53 +}