Page MenuHomec4science
Files F102352960

parser.cc
No OneTemporary
Actions

File Metadata

Created
Wed, Feb 19, 19:38

parser.cc
View Options

/**
* @file parser.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Wed Nov 13 2013
* @date last modification: Fri Sep 05 2014
*
* @brief implementation of the parser
*
* @section LICENSE
*
* Copyright (©) 2014 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/>.
*
*/
/* -------------------------------------------------------------------------- */
// STL
#include <fstream>
#include <iomanip>
#include <map>
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "parser.hh"
#include "static_communicator.hh"
/* -------------------------------------------------------------------------- */
//#include <boost/config/warning_disable.hpp>
#include <boost/spirit/include/qi.hpp>
#include <boost/spirit/include/support_multi_pass.hpp>
#include <boost/spirit/include/classic_position_iterator.hpp>
/* -------------------------------------------------------------------------- */
#include "algebraic_parser.hh"
#include "input_file_parser.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
ParserSection::~ParserSection() {
}
/* -------------------------------------------------------------------------- */
ParserParameter & ParserSection::addParameter(const ParserParameter & param) {
if(parameters.find(param.getName()) != parameters.end())
AKANTU_EXCEPTION("The parameter \"" + param.getName() + "\" is already defined in this section");
return (parameters.insert
(std::pair<std::string, ParserParameter>(param.getName(),
param)).first->second);
}
/* -------------------------------------------------------------------------- */
ParserSection & ParserSection::addSubSection(const ParserSection & section) {
return ((sub_sections_by_type.insert
(std::pair<SectionType, ParserSection>(section.getType(),
section)))->second);
}
/* -------------------------------------------------------------------------- */
std::string Parser::getLastParsedFile() const {
return last_parsed_file;
}
/* -------------------------------------------------------------------------- */
void Parser::parse(const std::string& filename) {
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("parser_permissive", _ppsc_current_scope);
debug::setDebugLevel(dbl);
parser_permissive = permissive;
AKANTU_DEBUG_INFO("Parser switched permissive mode to " << std::boolalpha << parser_permissive);
} catch (debug::Exception & e) {
}
last_parsed_file = filename;
input.close();
}
/* -------------------------------------------------------------------------- */
template <class T, class Grammar>
T Parser::parseType(const std::string & value, Grammar & grammar) {
using boost::spirit::ascii::space;
std::string::const_iterator b = value.begin();
std::string::const_iterator e = value.end();
T resultat = T();
bool res = false;
try {
res = qi::phrase_parse(b, e, grammar, space, resultat);
} catch(debug::Exception & ex) {
AKANTU_EXCEPTION("Could not parse '" << value << "' as a "
<< debug::demangle(typeid(T).name()) << ", an unknown error append '"
<< ex.what());
}
if(!res || (b != e)) {
AKANTU_EXCEPTION("Could not parse '" << value << "' as a "
<< debug::demangle(typeid(T).name()) << ", an unknown error append '"
<< std::string(value.begin(), b) << "<HERE>" << std::string(b, e) << "'");
}
return resultat;
}
/* -------------------------------------------------------------------------- */
Real Parser::parseReal(const std::string & value, const ParserSection & section) {
using boost::spirit::ascii::space_type;
parser::AlgebraicGrammar<std::string::const_iterator, space_type> grammar(section);
return Parser::parseType<Real>(value, grammar);
}
/* -------------------------------------------------------------------------- */
Vector<Real> Parser::parseVector(const std::string & value, const ParserSection & section) {
using boost::spirit::ascii::space_type;
parser::VectorGrammar<std::string::const_iterator, space_type> grammar(section);
return Parser::parseType<parser::parsable_vector>(value, grammar);
}
/* -------------------------------------------------------------------------- */
Matrix<Real> Parser::parseMatrix(const std::string & value, const ParserSection & section) {
using boost::spirit::ascii::space_type;
parser::MatrixGrammar<std::string::const_iterator, space_type> grammar(section);
return Parser::parseType<parser::parsable_matrix>(value, grammar);
}
/* -------------------------------------------------------------------------- */
RandomParameter<Real> Parser::parseRandomParameter(const std::string & value, const ParserSection & section) {
using boost::spirit::ascii::space_type;
parser::RandomGeneratorGrammar<std::string::const_iterator, space_type> grammar(section);
parser::ParsableRandomGenerator rg = Parser::parseType<parser::ParsableRandomGenerator>(value, grammar);
Vector<Real> params = rg.parameters;
switch(rg.type) {
case _rdt_not_defined: return RandomParameter<Real>(rg.base);
case _rdt_uniform: return RandomParameter<Real>(rg.base, UniformDistribution<Real>(params(0), params(1)));
case _rdt_weibull: return RandomParameter<Real>(rg.base, WeibullDistribution<Real>(params(0), params(1)));
default:
AKANTU_EXCEPTION("This is an unknown random distribution in the parser");
}
}
/* -------------------------------------------------------------------------- */
void ParserSection::printself(std::ostream & stream, unsigned int indent) const {
std::string space;
std::string ind = AKANTU_INDENT;
for(unsigned int i = 0; i < indent; i++, space += ind);
stream << space << "Section(" << this->type << ") "
<< this->name << (option != "" ? (" " + option) : "")
<< " [" << std::endl;
if(!this->parameters.empty()) {
stream << space << ind << "Parameters [" << std::endl;
Parameters::const_iterator pit = this->parameters.begin();
for(;pit != this->parameters.end(); ++pit) {
stream << space << ind << " + ";
pit->second.printself(stream);
stream << std::endl;
}
stream << space << ind << "]" << std::endl;
}
if(!this->sub_sections_by_type.empty()) {
stream << space << ind << "Subsections [" << std::endl;
SubSections::const_iterator sit = this->sub_sections_by_type.begin();
for (;sit != this->sub_sections_by_type.end(); ++sit) sit->second.printself(stream, indent + 2);
stream << std::endl;
stream << space << ind << "]" << std::endl;
}
stream << space << "]" << std::endl;
}
__END_AKANTU__

Event Timeline

c4science · Help