PAFParser.h

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// -*- lsst-c++ -*-
 
/*
 * LSST Data Management System
 * Copyright 2008, 2009, 2010 LSST Corporation.
 *
 * This product includes software developed by the
 * LSST Project (http://www.lsst.org/).
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the LSST License Statement and
 * the GNU General Public License along with this program.  If not,
 * see <http://www.lsstcorp.org/LegalNotices/>.
 */
 
#ifndef LSST_PEX_POLICY_PAF_TOKENIZER_H
#define LSST_PEX_POLICY_PAF_TOKENIZER_H
 
#include <iostream>
 
#include "lsst/pex/policy/PolicyParser.h"
#include "lsst/pex/policy/Policy.h"
 
#include <boost/regex.hpp>
 
namespace lsst {
namespace pex {
namespace policy {
namespace paf {
 
class PAFParser : public PolicyParser {
public:
 
    PAFParser(Policy& policy);
 
    PAFParser(Policy& policy, bool strict);
 
    virtual ~PAFParser();
 
    virtual int parse(std::istream& is);
 
private:
    // read next line from stream into the line string
    std::ios::iostate _nextLine(std::istream& is, std::string& line);
 
    // push a line back onto the stream
    void _pushBackLine(const std::string& line);
 
    int _parseIntoPolicy(std::istream& is, Policy& policy);
    int _addValue(const std::string& propname, std::string& value,
                  Policy& policy, std::istream& is);
 
    static const boost::regex COMMENT_LINE;
    static const boost::regex EMPTY_LINE;
    static const boost::regex SPACE_SRCH;
    static const boost::regex PARAM_SRCH;
    static const boost::regex NAME_MTCH;
    static const boost::regex OPEN_SRCH;
    static const boost::regex CLOSE_SRCH;
    static const boost::regex DOUBLE_VALUE;
    static const boost::regex INT_VALUE;
    static const boost::regex ATRUE_VALUE;
    static const boost::regex AFALSE_VALUE;
    static const boost::regex QQSTRING_VALUE;
    static const boost::regex QSTRING_VALUE;
    static const boost::regex QQSTRING_START;
    static const boost::regex QSTRING_START;
    static const boost::regex QQSTRING_EMPTYSTART;
    static const boost::regex QSTRING_EMPTYSTART;
    static const boost::regex QQSTRING_END;
    static const boost::regex QSTRING_END;
    static const boost::regex BARE_STRING_LINE;
    static const boost::regex BARE_STRING;
    static const boost::regex URN_VALUE;
    static const boost::regex FILE_VALUE;
 
    // the policy reference, Policy& _pol, is a member of the parent class
    std::list<std::string> _buffer;
    int _lineno;
    int _depth;
};
 
 
}}}}   // end lsst::pex::policy::paf
#endif // LSST_PEX_POLICY_PAF_PAFPARSER_H