Coverage Report - com.sun.javafx.runtime.sequence.MapSequence
 
Classes in this File Line Coverage Branch Coverage Complexity
MapSequence
100%
7/7
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  
  * Provides a view of an underlying sequence by applying a mapping function to each element of the underlying
 30  
  * sequence. The mapping is done lazily, on each call to get(), rather than eagerly, so the time and space
 31  
  * construction costs of a MapSequence are O(1).  Mapped sequences should be constructed with the factory method
 32  
  * Sequences.map(), rather than with the MapSequence constructor.
 33  
  *
 34  
  * @author Brian Goetz
 35  
  */
 36  
 class MapSequence<T, U> extends AbstractSequence<U> implements Sequence<U> {
 37  
 
 38  
     private final Sequence<T> sequence;
 39  
     private final SequenceMapper<T, U> mapper;
 40  
 
 41  
     public MapSequence(Class<U> clazz, Sequence<T> sequence, SequenceMapper<T, U> mapper) {
 42  1
         super(clazz);
 43  1
         this.sequence = sequence;
 44  1
         this.mapper = mapper;
 45  1
     }
 46  
 
 47  
     @Override
 48  
     public int size() {
 49  67
         return sequence.size();
 50  
     }
 51  
 
 52  
     @Override
 53  
     public int getDepth() {
 54  1
         return sequence.getDepth() + 1;
 55  
     }
 56  
 
 57  
     @Override
 58  
     public U get(int position) {
 59  36
         return mapper.map(sequence, position, sequence.get(position));
 60  
     }
 61  
 }