1 ////////////////////////////////////////////////////////////////////////////////
2 // checkstyle: Checks Java source code for adherence to a set of rules.
3 // Copyright (C) 2001-2019 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
20 package com.puppycrawl.tools.checkstyle;
21
22 import java.util.Collection;
23 import java.util.HashMap;
24 import java.util.HashSet;
25 import java.util.Map;
26
27 import com.puppycrawl.tools.checkstyle.api.Context;
28
29 /**
30 * A default implementation of the Context interface.
31 */
32 public final class DefaultContext implements Context {
33
34 /** Stores the context entries. */
35 private final Map<String, Object> entries = new HashMap<>();
36
37 @Override
38 public Object get(String key) {
39 return entries.get(key);
40 }
41
42 @Override
43 public Collection<String> getAttributeNames() {
44 return new HashSet<>(entries.keySet());
45 }
46
47 /**
48 * Adds a context entry.
49 * @param key the context key
50 * @param value the value for key
51 */
52 public void add(String key, Object value) {
53 entries.put(key, value);
54 }
55
56 }