    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
    015package org.apache.tapestry5.internal.plastic;
    016
    017import java.util.ArrayList;
    018import java.util.List;
    019
    020/**
    021 * Stores static context information needed by a transformed PlasticClass; this includes data such as
    022 * injections.
    023 */
    024public 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}