Orocos Real-Time Toolkit  2.5.0
ArgumentsParser.cpp
00001 /***************************************************************************
00002   tag: Peter Soetens  Mon May 10 19:10:37 CEST 2004  ArgumentsParser.cxx
00003 
00004                         ArgumentsParser.cxx -  description
00005                            -------------------
00006     begin                : Mon May 10 2004
00007     copyright            : (C) 2004 Peter Soetens
00008     email                : peter.soetens@mech.kuleuven.ac.be
00009 
00010  ***************************************************************************
00011  *   This library is free software; you can redistribute it and/or         *
00012  *   modify it under the terms of the GNU Lesser General Public            *
00013  *   License as published by the Free Software Foundation; either          *
00014  *   version 2.1 of the License, or (at your option) any later version.    *
00015  *                                                                         *
00016  *   This library is distributed in the hope that it will be useful,       *
00017  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00018  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
00019  *   Lesser General Public License for more details.                       *
00020  *                                                                         *
00021  *   You should have received a copy of the GNU Lesser General Public      *
00022  *   License along with this library; if not, write to the Free Software   *
00023  *   Foundation, Inc., 59 Temple Place,                                    *
00024  *   Suite 330, Boston, MA  02111-1307  USA                                *
00025  *                                                                         *
00026  ***************************************************************************/
00027 
00028 #include "parser-debug.hpp"
00029 #ifdef ORO_PRAGMA_INTERFACE
00030 #pragma implementation
00031 #endif
00032 #include "ArgumentsParser.hpp"
00033 
00034 #include <boost/bind.hpp>
00035 #include <boost/lexical_cast.hpp>
00036 
00037 #include "ExpressionParser.hpp"
00038 #include "../TaskContext.hpp"
00039 
00040 
00041 namespace RTT
00042 {
00043   using namespace detail;
00044   using boost::bind;
00045 
00046     namespace {
00047         boost::spirit::classic::assertion<std::string> expect_open("Open brace expected.");
00048         boost::spirit::classic::assertion<std::string> expect_close("Closing brace expected ( or could not find out what this line means ).");
00049         boost::spirit::classic::assertion<std::string> expect_arg("No argument given after comma.");
00050     }
00051 
00052   ArgumentsParser::ArgumentsParser(
00053     ExpressionParser& p,  TaskContext* peer, Service::shared_ptr tobject, const std::string& o,
00054     const std::string& m )
00055     : mparsed( false ), expressionparser( p ),
00056       mobject( o ), mmethod( m ), _peer(peer), mtobject(tobject)
00057   {
00058     BOOST_SPIRIT_DEBUG_RULE( argument );
00059     BOOST_SPIRIT_DEBUG_RULE( arguments );
00060 
00061     // a series of arguments; a command-separated list of arguments
00062     // between parentheses..
00063     arguments = (
00064       ch_p('(')
00065       >> !( argument >> *( ch_p( ',' ) >> expect_arg( argument ) ) )
00066       >> expect_close(ch_p(')')) )[
00067         bind( &ArgumentsParser::seenarguments, this ) ];
00068 
00069     // a single argument is just a normal expression..
00070     argument =
00071       expressionparser.parser() [
00072         bind( &ArgumentsParser::seen_arg, this ) ];
00073   }
00074 
00075   void ArgumentsParser::seen_arg()
00076   {
00077     margs.push_back( expressionparser.getResult() );
00078     expressionparser.dropResult();
00079   }
00080 
00081   void ArgumentsParser::seenarguments()
00082   {
00083     mparsed = true;
00084   }
00085 
00086   ArgumentsParser::~ArgumentsParser()
00087   {
00088     margs.clear();
00089   }
00090 }