org.spearce.jgit/src/org/spearce/jgit/fnmatch/AbstractHead.java

   1 /*
   2  * Copyright (C) 2008, Florian Köberle <florianskarten@web.de>
   3  *
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or
   7  * without modification, are permitted provided that the following
   8  * conditions are met:
   9  *
  10  * - Redistributions of source code must retain the above copyright
  11  *   notice, this list of conditions and the following disclaimer.
  12  *
  13  * - Redistributions in binary form must reproduce the above
  14  *   copyright notice, this list of conditions and the following
  15  *   disclaimer in the documentation and/or other materials provided
  16  *   with the distribution.
  17  *
  18  * - Neither the name of the Git Development Community nor the
  19  *   names of its contributors may be used to endorse or promote
  20  *   products derived from this software without specific prior
  21  *   written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  24  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  25  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  26  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  28  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  29  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  31  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  32  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  33  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  35  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  */
  37
  38 package org.spearce.jgit.fnmatch;
  39
  40 import java.util.List;
  41
  42 abstract class AbstractHead implements Head {
  43         private List<Head> newHeads = null;
  44
  45         private final boolean star;
  46
  47         protected abstract boolean matches(char c);
  48
  49         AbstractHead(boolean star) {
  50                 this.star = star;
  51         }
  52
  53         /**
  54          *
  55          * @param newHeads
  56          *            a list of {@link Head}s which will not be modified.
  57          */
  58         public final void setNewHeads(List<Head> newHeads) {
  59                 if (this.newHeads != null)
  60                         throw new IllegalStateException("Property is already non null");
  61                 this.newHeads = newHeads;
  62         }
  63
  64         public List<Head> getNextHeads(char c) {
  65                 if (matches(c))
  66                         return newHeads;
  67                 else
  68                         return FileNameMatcher.EMPTY_HEAD_LIST;
  69         }
  70
  71         boolean isStar() {
  72                 return star;
  73         }
  74 }