| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| DomStack |
|
| 2.5;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 | } |