Coverage Report - com.sun.javafx.runtime.sequence.SubSequence
 
Classes in this File Line Coverage Branch Coverage Complexity
SubSequence
100%
10/10
100%
6/6
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  
  * Represents a portion of another sequence.  Subsequences should be created with the Sequences.subsequence() factory
 30  
  * method, rather than with the SubSequence constructor.  O(1) space and time construction costs.
 31  
  *
 32  
  * @author Brian Goetz
 33  
  */
 34  
 class SubSequence<T> extends AbstractSequence<T> implements Sequence<T> {
 35  
 
 36  
     private final Sequence<? extends T> sequence;
 37  
     private final int start;
 38  
     private final int end;
 39  
 
 40  
     public SubSequence(Sequence<T> sequence, int start, int end) {
 41  1553
         super(sequence.getElementType());
 42  1553
         this.sequence = sequence;
 43  1553
         this.start = Math.max(start, 0);
 44  1553
         this.end = Math.min(end, sequence.size());
 45  1553
     }
 46  
 
 47  
     @Override
 48  
     public int size() {
 49  33172
         return (start <= end) ? end - start : 0;
 50  
     }
 51  
 
 52  
     @Override
 53  
     public int getDepth() {
 54  1096
         return sequence.getDepth() + 1;
 55  
     }
 56  
 
 57  
     @Override
 58  
     public T get(int position) {
 59  47689
         if (position < 0 || position + start >= end)
 60  37
             throw new IndexOutOfBoundsException(Integer.toString(position));
 61  
         else
 62  47652
             return sequence.get(position + start);
 63  
     }
 64  
 }