////////////////////////////////////////////////////////////////////////////////

 // checkstyle: Checks Java source code for adherence to a set of rules.

 // Copyright (C) 2001-2014  Oliver Burn

 //

 // This library is free software; you can redistribute it and/or

 // modify it under the terms of the GNU Lesser General Public

 // License as published by the Free Software Foundation; either

 // version 2.1 of the License, or (at your option) any later version.

 //

 // This library is distributed in the hope that it will be useful,

 // but WITHOUT ANY WARRANTY; without even the implied warranty of

 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 // Lesser General Public License for more details.

 //

 // You should have received a copy of the GNU Lesser General Public

 // License along with this library; if not, write to the Free Software

 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 ////////////////////////////////////////////////////////////////////////////////

 package com.puppycrawl.tools.checkstyle;

 import com.google.common.collect.ImmutableList;

 import com.google.common.collect.ImmutableCollection;

 import com.google.common.collect.Maps;

 import com.puppycrawl.tools.checkstyle.api.Context;

 import java.util.Map;

 /**

  * A default implementation of the Context interface.

  * @author lkuehne

  */

 public final class DefaultContext implements Context

 {

     /** stores the context entries */

     private final Map<String, Object> mEntries = Maps.newHashMap();

     /** {@inheritDoc} */

     public Object get(String aKey)

     {

         return mEntries.get(aKey);

     }

     /** {@inheritDoc} */

     public ImmutableCollection<String> getAttributeNames()

     {

         return ImmutableList.copyOf(mEntries.keySet());

     }

     /**

      * Adds a context entry.

      * @param aKey the context key

      * @param aValue the value for aKey

      */

     public void add(String aKey, Object aValue)

     {

         mEntries.put(aKey, aValue);

     }

 }