Coverage Report - org.xembly.DomStack
 
Classes in this File Line Coverage Branch Coverage Complexity
DomStack
91%
11/12
0%
0/12
2.5
 
 1  
 /**
 2  
  * Copyright (c) 2013-2017, xembly.org
 3  
  * All rights reserved.
 4  
  *
 5  
  * Redistribution and use in source and binary forms, with or without
 6  
  * modification, are permitted provided that the following conditions
 7  
  * are met: 1) Redistributions of source code must retain the above
 8  
  * copyright notice, this list of conditions and the following
 9  
  * disclaimer. 2) Redistributions in binary form must reproduce the above
 10  
  * copyright notice, this list of conditions and the following
 11  
  * disclaimer in the documentation and/or other materials provided
 12  
  * with the distribution. 3) Neither the name of the xembly.org nor
 13  
  * the names of its contributors may be used to endorse or promote
 14  
  * products derived from this software without specific prior written
 15  
  * permission.
 16  
  *
 17  
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 18  
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
 19  
  * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 20  
  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 21  
  * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 22  
  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 23  
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 24  
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 25  
  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 26  
  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 27  
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 28  
  * OF THE POSSIBILITY OF SUCH DAMAGE.
 29  
  */
 30  
 package org.xembly;
 31  
 
 32  
 import java.util.Deque;
 33  
 import java.util.LinkedList;
 34  
 import java.util.NoSuchElementException;
 35  
 import lombok.EqualsAndHashCode;
 36  
 
 37  
 /**
 38  
  * Stack of DOM cursors.
 39  
  *
 40  
  * <p>The class is mutable and thread-safe.
 41  
  *
 42  
  * @author Yegor Bugayenko (yegor256@gmail.com)
 43  
  * @version $Id: 9172a9e2905c67c9cbe1755eca99ca0188c5a7cd $
 44  
  * @since 0.16
 45  
  */
 46  0
 @EqualsAndHashCode(of = "cursors")
 47  46
 final class DomStack implements Directive.Stack {
 48  
 
 49  
     /**
 50  
      * Queue of cursors.
 51  
      */
 52  46
     private final transient Deque<Directive.Cursor> cursors =
 53  
         new LinkedList<Directive.Cursor>();
 54  
 
 55  
     @Override
 56  
     public void push(final Directive.Cursor cursor) {
 57  4
         synchronized (this.cursors) {
 58  4
             this.cursors.push(cursor);
 59  4
         }
 60  4
     }
 61  
 
 62  
     @Override
 63  
     public Directive.Cursor pop() throws ImpossibleModificationException {
 64  
         try {
 65  5
             synchronized (this.cursors) {
 66  5
                 return this.cursors.pop();
 67  1
             }
 68  1
         } catch (final NoSuchElementException ex) {
 69  1
             throw new ImpossibleModificationException(
 70  
                 "stack is empty, can't POP", ex
 71  
             );
 72  
         }
 73  
     }
 74  
 }