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input_file_parser.hh
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			/**
			* @file input_file_parser.hh
			*
			* @author Nicolas Richart <nicolas.richart@epfl.ch>
			*
			* @date creation: Wed Nov 13 2013
			* @date last modification: Mon Dec 18 2017
			*
			* @brief Grammar definition for the input files
			*
			*
			* Copyright (©) 2014-2018 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/>.
			*
			*/

			/* -------------------------------------------------------------------------- */
			// Boost
			/* -------------------------------------------------------------------------- */

			#include <boost/config/warning_disable.hpp>
			#include <boost/spirit/include/phoenix_bind.hpp>
			#include <boost/spirit/include/phoenix_core.hpp>
			#include <boost/spirit/include/phoenix_fusion.hpp>
			#include <boost/spirit/include/phoenix_operator.hpp>
			#include <boost/spirit/include/qi.hpp>
			#include <boost/variant/recursive_variant.hpp>

			#ifndef AKANTU_INPUT_FILE_PARSER_HH_
			#define AKANTU_INPUT_FILE_PARSER_HH_

			namespace spirit = boost::spirit;
			namespace qi = boost::spirit::qi;
			namespace lbs = boost::spirit::qi::labels;
			namespace ascii = boost::spirit::ascii;
			namespace phx = boost::phoenix;

			namespace akantu {

			namespace parser {
			struct error_handler_ {
			template <typename, typename, typename, typename> struct result {
			using type = void;
			};

			template <typename Iterator>
			void operator()(qi::info const & what, Iterator err_pos, Iterator /first/,
			Iterator /last/) const {
			spirit::classic::file_position pos = err_pos.get_position();

			AKANTU_EXCEPTION("Parse error [ "
			<< "Expecting " << what << " instead of \"" << *err_pos
			<< "\" ]"
			<< " in file " << pos.file << " line " << pos.line
			<< " column " << pos.column << std::endl
			<< "'" << err_pos.get_currentline() << "'" << std::endl
			<< std::setw(pos.column) << " "
			<< "^- here");
			}

			private:
			};

			static ParserSection & create_subsection(
			const ParserType & type, const boost::optional<std::string> & opt_name,
			const boost::optional<std::string> & opt_option, ParserSection & sect) {
			std::string option;
			if (opt_option) {
			option = *opt_option;
			}

			static size_t id = 12;
			std::string name = "anonymous_" + std::to_string(id++);
			if (opt_name) {
			name = *opt_name;
			}

			ParserSection sect_tmp(name, type, option, sect);
			return sect.addSubSection(sect_tmp);
			}

			template <typename Iter>
			static bool create_parameter(boost::iterator_range<Iter> & rng,
			std::string & value, ParserSection & sect) {
			try {
			std::string name(rng.begin(), rng.end());
			name = trim(name);
			spirit::classic::file_position pos = rng.begin().get_position();

			ParserParameter param_tmp(name, value, sect);
			param_tmp.setDebugInfo(pos.file, pos.line, pos.column);
			sect.addParameter(param_tmp);
			} catch (debug::Exception & e) {
			return false;
			}
			return true;
			}

			static std::string concatenate(const std::string & t1,
			const std::string & t2) {
			return (t1 + t2);
			}

			/* ---------------------------------------------------------------------- */
			/* Grammars definitions */
			/* ---------------------------------------------------------------------- */
			template <class Iterator>
			struct InputFileGrammar
			: qi::grammar<Iterator, void(), typename Skipper<Iterator>::type> {
			InputFileGrammar(ParserSection * sect)
			: InputFileGrammar::base_type(start, "input_file_grammar"),
			parent_section(sect) {

			/* clang-format off */
			start
			= mini_section(parent_section)
			;

			mini_section
			= *(
			entry (lbs::_r1)
			\| section(lbs::_r1)
			)
			;

			entry
			= (
			qi::raw[key]
			>> '='
			> value
			) [ lbs::_pass = phx::bind(&create_parameter<Iterator>,
			lbs::_1,
			lbs::_2,
			*lbs::_r1) ]
			;

			section
			= (
			qi::no_case[section_type]
			> qi::lexeme
			[
			-section_name
			> -section_option
			]
			) [ lbs::_a = &phx::bind(&create_subsection,
			lbs::_1,
			phx::at_c<0>(lbs::_2),
			phx::at_c<1>(lbs::_2),
			*lbs::_r1) ]
			> '['
			> mini_section(lbs::_a)
			> ']'
			;

			section_name
			= qi::char_("a-zA-Z_") >> *qi::char_("a-zA-Z_0-9")
			;

			section_option
			= (+ascii::space >> section_name) [ lbs::_val = lbs::_2 ]
			;

			key
			= qi::char_("a-zA-Z_") >> *qi::char_("a-zA-Z_0-9")
			;

			value
			= (
			mono_line_value [ lbs::_a = phx::bind(&concatenate, lbs::_a, lbs::_1) ]
			> *(
			'\\' > mono_line_value [ lbs::_a = phx::bind(&concatenate, lbs::_a, lbs::_1) ]
			)
			) [ lbs::_val = lbs::_a ]
			;

			mono_line_value
			= qi::lexeme
			[
			+(qi::char_ - (qi::char_('=') \| spirit::eol \| '#' \| ';' \| '\\'))
			]
			;

			skipper
			= ascii::space
			\| "#" >> *(qi::char_ - spirit::eol)
			;

			/* clang-format on */

			#define AKANTU_SECTION_TYPE_ADD(r, data, elem) \
			(BOOST_PP_STRINGIZE(elem), BOOST_PP_CAT(ParserType::_, elem))

			section_type.add BOOST_PP_SEQ_FOR_EACH(AKANTU_SECTION_TYPE_ADD, _,
			AKANTU_SECTION_TYPES);
			#undef AKANTU_SECTION_TYPE_ADD

			#if !defined(AKANTU_NDEBUG)
			phx::function<error_handler_> const error_handler = error_handler_();
			qi::on_error<qi::fail>(start,
			error_handler(lbs::_4, lbs::_3, lbs::_1, lbs::_2));
			#endif

			section.name("section");
			section_name.name("section-name");
			section_option.name("section-option");
			mini_section.name("section-content");
			entry.name("parameter");
			key.name("parameter-name");
			value.name("parameter-value");
			section_type.name("section-types-list");
			mono_line_value.name("mono-line-value");

			#if !defined AKANTU_NDEBUG
			if (AKANTU_DEBUG_TEST(dblDebug)) {
			// qi::debug(section);
			qi::debug(section_name);
			qi::debug(section_option);
			// qi::debug(mini_section);
			// qi::debug(entry);
			qi::debug(key);
			qi::debug(value);
			qi::debug(mono_line_value);
			}
			#endif
			}

			const std::string & getErrorMessage() const { return error_message; };

			using skipper_type = typename Skipper<Iterator>::type;
			skipper_type skipper;

			private:
			std::string error_message;

			qi::rule<Iterator, void(ParserSection *), skipper_type> mini_section;
			qi::rule<Iterator, void(ParserSection ), qi::locals<ParserSection >,
			skipper_type>
			section;
			qi::rule<Iterator, void(), skipper_type> start;
			qi::rule<Iterator, std::string()> section_name;
			qi::rule<Iterator, std::string()> section_option;
			qi::rule<Iterator, void(ParserSection *), skipper_type> entry;
			qi::rule<Iterator, std::string(), skipper_type> key;
			qi::rule<Iterator, std::string(), qi::locals<std::string>, skipper_type>
			value;
			qi::rule<Iterator, std::string(), skipper_type> mono_line_value;

			qi::symbols<char, ParserType> section_type;

			ParserSection * parent_section;
			};
			} // namespace parser

			} // namespace akantu

			#endif /* AKANTU_INPUT_FILE_PARSER_HH_ */

rAKA/src/io/parser/input_file_parser.hh93cfdbc5065afeatures/50-using…

input_file_parser.hhView Options

rAKA/src/io/parser/input_file_parser.hh
93cfdbc5065afeatures/50-using…

input_file_parser.hh
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