    001    // Copyright 2011 The Apache Software Foundation
    002    //
    003    // Licensed under the Apache License, Version 2.0 (the "License");
    004    // you may not use this file except in compliance with the License.
    005    // You may obtain a copy of the License at
    006    //
    007    // http://www.apache.org/licenses/LICENSE-2.0
    008    //
    009    // Unless required by applicable law or agreed to in writing, software
    010    // distributed under the License is distributed on an "AS IS" BASIS,
    011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012    // See the License for the specific language governing permissions and
    013    // limitations under the License.
    014
    015    package org.apache.tapestry5.internal.plastic;
    016
    017    import java.util.ArrayList;
    018    import java.util.List;
    019
    020    /**
    021     * Stores static context information needed by a transformed PlasticClass; this includes data such as
    022     * injections.
    023     */
    024    public class StaticContext
    025    {
    026        private final List<Object> values;
    027
    028        public StaticContext()
    029        {
    030            this(new ArrayList<Object>());
    031        }
    032
    033        private StaticContext(List<Object> values)
    034        {
    035            this.values = values;
    036        }
    037
    038        /**
    039         * Duplicates this StaticContext, which is used when creating a subclass
    040         * of a transformed class.
    041         *
    042         * @return new StaticContext with the same values
    043         */
    044        public StaticContext dupe()
    045        {
    046            return new StaticContext(new ArrayList<Object>(values));
    047        }
    048
    049        /** Store a context value and return its index. */
    050        public int store(Object value)
    051        {
    052            values.add(value);
    053
    054            return values.size() - 1;
    055        }
    056
    057        public Object get(int index)
    058        {
    059            return values.get(index);
    060        }
    061
    062    }