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parser_input_files.cc
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Wed, Nov 13, 09:30

parser_input_files.cc
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/**
* @file parser_input_files.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Wed Nov 11 2015
* @date last modification: Wed Jan 13 2016
*
* @brief implementation of the parser
*
* @section LICENSE
*
* Copyright (©) 2015 EPFL (Ecole Polytechnique Fédérale de Lausanne) Laboratory
* (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "parser.hh"
#include "parser_grammar_tmpl.hh"
/* -------------------------------------------------------------------------- */
#include "input_file_parser.hh"
/* -------------------------------------------------------------------------- */
#include <fstream>
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
void Parser::parse(const std::string & filename) {
this->clean();
std::ifstream input(filename.c_str());
if (!input.good()) {
AKANTU_EXCEPTION("Could not open file " << filename << "!");
}
input.unsetf(std::ios::skipws);
// wrap istream into iterator
spirit::istream_iterator fwd_begin(input);
spirit::istream_iterator fwd_end;
// wrap forward iterator with position iterator, to record the position
typedef spirit::classic::position_iterator2<spirit::istream_iterator>
pos_iterator_type;
pos_iterator_type position_begin(fwd_begin, fwd_end, filename);
pos_iterator_type position_end;
// parse
parser::InputFileGrammar<pos_iterator_type> ag(this);
bool result = qi::phrase_parse(position_begin, position_end, ag, ag.skipper);
if (!result || position_begin != position_end) {
spirit::classic::file_position pos = position_begin.get_position();
AKANTU_EXCEPTION("Parse error [ "
<< ag.getErrorMessage() << " ]"
<< " in file " << filename << " line " << pos.line
<< " column " << pos.column << std::endl
<< "'" << position_begin.get_currentline() << "'"
<< std::endl
<< std::setw(pos.column) << " "
<< "^- here");
}
try {
DebugLevel dbl = debug::getDebugLevel();
debug::setDebugLevel(dblError);
bool permissive = getParameter("permissive_parser", _ppsc_current_scope);
debug::setDebugLevel(dbl);
permissive_parser = permissive;
AKANTU_DEBUG_INFO("Parser switched permissive mode to "
<< std::boolalpha << permissive_parser);
} catch (debug::Exception & e) {
}
last_parsed_file = filename;
input.close();
}
__END_AKANTU__

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