Layout.hh

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef avro_Layout_hh__
#define avro_Layout_hh__

#include <boost/noncopyable.hpp>
#include "Boost.hh"


namespace avro {
    
class Layout : private boost::noncopyable {

  protected:

    Layout(size_t offset = 0) :
        offset_(offset)
    {}

  public:

    size_t offset() const {
        return offset_;
    }

    virtual ~Layout() {}

  private:

    const size_t offset_;
};

class PrimitiveLayout : public Layout {

  public:

    PrimitiveLayout(size_t offset = 0) :
        Layout(offset)
    {}
};

class CompoundLayout : public Layout {

  public:

    CompoundLayout(size_t offset = 0) :
        Layout(offset)
    {}

    void add(Layout *layout) {
        layouts_.push_back(layout);
    }

    const Layout &at (size_t idx) const {
        return layouts_.at(idx);
    }

  private:

    boost::ptr_vector<Layout> layouts_;
};

} // namespace avro

#endif