hg/apidesign: samples/apifest1/day2/elementbasedsolution/src/org/netbeans/apifest/boolcircuit/Circuit.java@3bc4c54f4bcc

     1 package org.netbeans.apifest.boolcircuit;

     3 // BEGIN: apifest.day2.elementbasedsolution.Circuit

     4 public final class Circuit {

     5     private Circuit() {

     6     }

     8     public static Element and(final Element e1, final Element e2) {

     9         return new Element() {

    10             public boolean result() {

    11                 return e1.result() && e2.result();

    12             }

    13             public double doubleResult() {

    14                 return e1.doubleResult() * e2.doubleResult();

    15             }

    16         };

    17     }

    18     public static Element or(final Element e1, final Element e2) {

    19         return new Element() {

    20             public boolean result() {

    21                 return e1.result() || e2.result();

    22             }

    23             public double doubleResult() {

    24                 return 1.0 -

    25                     (1.0 - e1.doubleResult()) * (1.0 - e2.doubleResult());

    26             }

    27         };

    28     }

    30     public static Element not(final Element e1) {

    31         return new Element() {

    32             public boolean result() {

    33                 return !e1.result();

    34             }

    35             public double doubleResult() {

    36                 return 1 - e1.doubleResult();

    37             }

    38         };

    39     }

    41     public static Element operation(

    42         final Operation op, final Element... elements

    43     ) {

    44         return new Element() {

    45             public boolean result() {

    46                 return doubleResult() >= 1.0;

    47             }

    48             public double doubleResult() {

    49                 double[] arr = new double[elements.length];

    50                 for (int i = 0; i < arr.length; i++) {

    51                     arr[i] = elements[i].doubleResult();

    52                 }

    53                 return op.computeResult(arr);

    54             }

    55         };

    57     }

    59     public static Variable var() {

    60         return new Variable();

    61     }

    63     public static abstract class Element {

    64         private Element() {

    65         }

    67         public abstract boolean result();

    68         public abstract double doubleResult();

    69     }

    71     public static final class Variable extends Element {

    72         private Boolean booleanValue;

    73         private Double doubleValue;

    75         public void assignValue(boolean b) {

    76             booleanValue = b;

    77         }

    78         public void assignValue(double d) {

    79             if (d < 0 || d > 1) {

    80                 throw new IllegalArgumentException();

    81             }

    82             doubleValue = d;

    83         }

    85         public boolean result() {

    86             return booleanValue != null ?

    87                 booleanValue : doubleValue >= 1.0;

    88         }

    90         public double doubleResult() {

    91             return doubleValue != null ?

    92                 doubleValue : (booleanValue ? 1.0 : 0.0);

    93         }

    95     }

    97     public static interface Operation {

    98         public double computeResult(double... values);

    99     }

   100 }

   101 // END: apifest.day2.elementbasedsolution.Circuit

author	Jaroslav Tulach <jtulach@netbeans.org>
	Sat, 14 Jun 2008 09:56:12 +0200
changeset 132	3bc4c54f4bcc
parent 59	02e05defc6a0
child 153	b5cbb797ec0a
permissions	-rw-r--r--