Layout.hh

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00001 /*
00002  * Licensed to the Apache Software Foundation (ASF) under one
00003  * or more contributor license agreements.  See the NOTICE file
00004  * distributed with this work for additional information
00005  * regarding copyright ownership.  The ASF licenses this file
00006  * to you under the Apache License, Version 2.0 (the
00007  * "License"); you may not use this file except in compliance
00008  * with the License.  You may obtain a copy of the License at
00009  *
00010  *     http://www.apache.org/licenses/LICENSE-2.0
00011  *
00012  * Unless required by applicable law or agreed to in writing, software
00013  * distributed under the License is distributed on an "AS IS" BASIS,
00014  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00015  * See the License for the specific language governing permissions and
00016  * limitations under the License.
00017  */
00018 
00019 #ifndef avro_Layout_hh__
00020 #define avro_Layout_hh__
00021 
00022 #include <boost/noncopyable.hpp>
00023 #include "Config.hh"
00024 #include "Boost.hh"
00025 
00028 
00029 namespace avro {
00030     
00031 class AVRO_DECL Layout : private boost::noncopyable {
00032 
00033   protected:
00034 
00035     Layout(size_t offset = 0) :
00036         offset_(offset)
00037     {}
00038 
00039   public:
00040 
00041     size_t offset() const {
00042         return offset_;
00043     }
00044 
00045     virtual ~Layout() {}
00046 
00047   private:
00048 
00049     const size_t offset_;
00050 };
00051 
00052 class AVRO_DECL PrimitiveLayout : public Layout {
00053 
00054   public:
00055 
00056     PrimitiveLayout(size_t offset = 0) :
00057         Layout(offset)
00058     {}
00059 };
00060 
00061 class AVRO_DECL CompoundLayout : public Layout {
00062 
00063   public:
00064 
00065     CompoundLayout(size_t offset = 0) :
00066         Layout(offset)
00067     {}
00068 
00069     void add(Layout *layout) {
00070         layouts_.push_back(layout);
00071     }
00072 
00073     const Layout &at (size_t idx) const {
00074         return layouts_.at(idx);
00075     }
00076 
00077   private:
00078 
00079     boost::ptr_vector<Layout> layouts_;
00080 };
00081 
00082 } // namespace avro
00083 
00084 #endif