Orocos Real-Time Toolkit  2.6.0
StdStringTypeInfo.hpp
00001 /***************************************************************************
00002   tag: The SourceWorks  Tue Sep 7 00:55:18 CEST 2010  StdStringTypeInfo.hpp
00003 
00004                         StdStringTypeInfo.hpp -  description
00005                            -------------------
00006     begin                : Tue September 07 2010
00007     copyright            : (C) 2010 The SourceWorks
00008     email                : peter@thesourceworks.com
00009 
00010  ***************************************************************************
00011  *   This library is free software; you can redistribute it and/or         *
00012  *   modify it under the terms of the GNU General Public                   *
00013  *   License as published by the Free Software Foundation;                 *
00014  *   version 2 of the License.                                             *
00015  *                                                                         *
00016  *   As a special exception, you may use this file as part of a free       *
00017  *   software library without restriction.  Specifically, if other files   *
00018  *   instantiate templates or use macros or inline functions from this     *
00019  *   file, or you compile this file and link it with other files to        *
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00024  *   Public License.                                                       *
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00030  *                                                                         *
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00036  ***************************************************************************/
00037 
00038 
00039 #include <string>
00040 #include "../types/SequenceTypeInfo.hpp"
00041 #include "../types/TemplateTypeInfo.hpp"
00042 
00043 namespace RTT
00044 {
00045     namespace types
00046     {
00047 
00051         struct StdStringTypeInfo: public SequenceTypeInfo<std::string, true>
00052         {
00053             StdStringTypeInfo(const std::string& tname = "string") :
00054                 SequenceTypeInfo<std::string, true> (tname)
00055             {
00056             }
00057 
00058             base::AttributeBase* buildVariable(std::string name, int size) const
00059             {
00060                 std::string t_init(size, ' '); // we can't use the default char(), which is null !
00061 
00062                 // returned type is identical to parent, but we set spaces.
00063                 base::AttributeBase* ret = SequenceTypeInfo<std::string, true>::buildVariable(name, size);
00064                 Attribute<std::string> tt = ret;
00065                 tt.set(t_init);
00066                 return ret;
00067             }
00068 
00069             virtual bool composeType(base::DataSourceBase::shared_ptr source, base::DataSourceBase::shared_ptr result) const
00070             {
00071                 return result->update( source.get() );
00072             }
00073 
00077             virtual base::DataSourceBase::shared_ptr decomposeType(base::DataSourceBase::shared_ptr source) const {
00078                 return source;
00079             }
00080 
00081         };
00082     }
00083 }