Coverage Report - com.sun.javafx.runtime.sequence.CartesianProduct2D
 
Classes in this File Line Coverage Branch Coverage Complexity
CartesianProduct2D
90%
9/10
N/A
0
CartesianProduct2D$Mapper
N/A
N/A
0
 
 1  
 /*
 2  
  * Copyright 2007 Sun Microsystems, Inc.  All Rights Reserved.
 3  
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  
  *
 5  
  * This code is free software; you can redistribute it and/or modify it
 6  
  * under the terms of the GNU General Public License version 2 only, as
 7  
  * published by the Free Software Foundation.  Sun designates this
 8  
  * particular file as subject to the "Classpath" exception as provided
 9  
  * by Sun in the LICENSE file that accompanied this code.
 10  
  *
 11  
  * This code is distributed in the hope that it will be useful, but WITHOUT
 12  
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 13  
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 14  
  * version 2 for more details (a copy is included in the LICENSE file that
 15  
  * accompanied this code).
 16  
  *
 17  
  * You should have received a copy of the GNU General Public License version
 18  
  * 2 along with this work; if not, write to the Free Software Foundation,
 19  
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 20  
  *
 21  
  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 22  
  * CA 95054 USA or visit www.sun.com if you need additional information or
 23  
  * have any questions.
 24  
  */
 25  
 
 26  
 package com.sun.javafx.runtime.sequence;
 27  
 
 28  
 /**
 29  
  * Special case for two-dimensional foreach comprehension when there are no where clauses on either list and
 30  
  * the foreach body always returns a single instance. The results are computed as needed rather than
 31  
  * precomputed, to save space.
 32  
  * 
 33  
  * @author Brian Goetz
 34  
  */
 35  
 public class CartesianProduct2D<T, U, V> extends AbstractSequence<T> implements Sequence<T> {
 36  
 
 37  
     public interface Mapper<T, U, V> {
 38  
         public T map(int index1, U value1, int index2, V value2);
 39  
     }
 40  
 
 41  
     private final Sequence<U> seq1;
 42  
     private final Sequence<V> seq2;
 43  
     private final Mapper<T, U, V> mapper;
 44  
 
 45  
     public CartesianProduct2D(Class<T> clazz, Sequence<U> seq1, Sequence<V> seq2, Mapper<T, U, V> mapper) {
 46  2
         super(clazz);
 47  2
         this.seq1 = seq1;
 48  2
         this.seq2 = seq2;
 49  2
         this.mapper = mapper;
 50  2
     }
 51  
 
 52  
     public int getDepth() {
 53  0
         return Math.max(seq1.getDepth(), seq2.getDepth()) + 1;
 54  
     }
 55  
 
 56  
     public int size() {
 57  14
         return seq1.size() * seq2.size();
 58  
     }
 59  
 
 60  
     public T get(int position) {
 61  12
         int index1 = position / seq2.size();
 62  12
         int index2 = position % seq2.size();
 63  12
         return mapper.map(index1, seq1.get(index1), index2, seq2.get(index2));
 64  
     }
 65  
 }