1 ////////////////////////////////////////////////////////////////////////////////
2 // checkstyle: Checks Java source code for adherence to a set of rules.
3 // Copyright (C) 2001-2015 the original author or authors.
4 //
5 // This library is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU Lesser General Public
7 // License as published by the Free Software Foundation; either
8 // version 2.1 of the License, or (at your option) any later version.
9 //
10 // This library is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 // Lesser General Public License for more details.
14 //
15 // You should have received a copy of the GNU Lesser General Public
16 // License along with this library; if not, write to the Free Software
17 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 ////////////////////////////////////////////////////////////////////////////////
19 package com.puppycrawl.tools.checkstyle;
20
21 import com.google.common.collect.ImmutableList;
22
23 import com.google.common.collect.ImmutableCollection;
24
25 import com.google.common.collect.Maps;
26 import com.puppycrawl.tools.checkstyle.api.Context;
27 import java.util.Map;
28
29 /**
30 * A default implementation of the Context interface.
31 * @author lkuehne
32 */
33 public final class DefaultContext implements Context
34 {
35 /** stores the context entries */
36 private final Map<String, Object> entries = Maps.newHashMap();
37
38 /** {@inheritDoc} */
39 @Override
40 public Object get(String key)
41 {
42 return entries.get(key);
43 }
44
45 /** {@inheritDoc} */
46 @Override
47 public ImmutableCollection<String> getAttributeNames()
48 {
49 return ImmutableList.copyOf(entries.keySet());
50 }
51
52 /**
53 * Adds a context entry.
54 * @param key the context key
55 * @param value the value for key
56 */
57 public void add(String key, Object value)
58 {
59 entries.put(key, value);
60 }
61 }