/*

  * CircuitFactory.java

  *

  * Created on July 12, 2006, 3:01 PM

  *

  * To change this template, choose Tools | Template Manager

  * and open the template in the editor.

  */

 package org.netbeans.apifest.boolcircuit;

 import java.util.Stack;

 /**

  *

  */

 public class CircuitFactory {

     /** Creates a new instance of CircuitFactory */

     private  CircuitFactory() {

     }

     public final static Circuit join (final Circuit c1, final Circuit c2, final Operation op) {

         return new Circuit () {

             public char evaluate(Stack input) throws IllegalArgumentException {

                 return op.evaluate(c1.evaluate(input), c2.evaluate(input));

             }

         };

     }

     public final static Circuit getBasicCircuit (final Operation op) {

         return new Circuit () {

             public char evaluate(Stack<Character> input) throws IllegalArgumentException {

                 // special handling of unary oparation

                 if (op instanceof Operation.Neg) {

                     return op.evaluate(input.pop(), input.peek());

                 } else {

                     return op.evaluate(input.pop(), input.pop());

                 }

             }

         };

     }

     public final static Circuit getTrivialCircuit () {

         return new Circuit () {

             public char evaluate(Stack<Character> input) throws IllegalArgumentException {

                 return input.peek();

             }

         };

     }

 }