001//////////////////////////////////////////////////////////////////////////////// 002// checkstyle: Checks Java source code for adherence to a set of rules. 003// Copyright (C) 2001-2014 Oliver Burn 004// 005// This library is free software; you can redistribute it and/or 006// modify it under the terms of the GNU Lesser General Public 007// License as published by the Free Software Foundation; either 008// version 2.1 of the License, or (at your option) any later version. 009// 010// This library is distributed in the hope that it will be useful, 011// but WITHOUT ANY WARRANTY; without even the implied warranty of 012// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013// Lesser General Public License for more details. 014// 015// You should have received a copy of the GNU Lesser General Public 016// License along with this library; if not, write to the Free Software 017// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 018//////////////////////////////////////////////////////////////////////////////// 019package com.puppycrawl.tools.checkstyle; 020 021import com.google.common.collect.ImmutableList; 022 023import com.google.common.collect.ImmutableCollection; 024 025import com.google.common.collect.Maps; 026import com.puppycrawl.tools.checkstyle.api.Context; 027import java.util.Map; 028 029/** 030 * A default implementation of the Context interface. 031 * @author lkuehne 032 */ 033public final class DefaultContext implements Context 034{ 035 /** stores the context entries */ 036 private final Map<String, Object> entries = Maps.newHashMap(); 037 038 /** {@inheritDoc} */ 039 @Override 040 public Object get(String key) 041 { 042 return entries.get(key); 043 } 044 045 /** {@inheritDoc} */ 046 @Override 047 public ImmutableCollection<String> getAttributeNames() 048 { 049 return ImmutableList.copyOf(entries.keySet()); 050 } 051 052 /** 053 * Adds a context entry. 054 * @param key the context key 055 * @param value the value for key 056 */ 057 public void add(String key, Object value) 058 { 059 entries.put(key, value); 060 } 061}