strings.h

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/*
 * This file is part of KnowRob, please consult
 * https://github.com/knowrob/knowrob for license details.
 */
 
#ifndef KNOWROB_STRING_PARSERS_H
#define KNOWROB_STRING_PARSERS_H
 
#include <boost/spirit/include/qi.hpp>
 
namespace knowrob::parsers::str {
    using StringRule = boost::spirit::qi::rule<std::string::const_iterator, std::string()>;
 
    StringRule &single_quotes();
 
    StringRule &double_quotes();
 
    StringRule &lower_prefix();
 
    StringRule &upper_prefix();
 
    // a IRI namespace is an alphanumeric word.
    // note that no single quotes are allowed, the greedy parser would match the `singleQuotes` rule before.
    StringRule &iri_ns();
 
    // right part of colon must be an alphanumeric word, or wrapped in single quoted.
    // Note that there is no need to enquote entities whose name starts with an uppercase character.
    StringRule &iri_entity();
 
    // IRIs are encoded as "ns:entity", ns must be a registered namespace at parse-time
    StringRule &iri();
 
    // Atoms are either a single quoted string, or words that start with a lowercase letter.
    StringRule &atom();
 
    // A typed IRI or another type atom
    StringRule &atom_or_iri();
 
    // A single blank character
    StringRule &blank();
 
    // A number as a string
    StringRule &number();
 
    // The value of a typed XSD literal as a string
    StringRule &xsd_value();
}
 
#endif //KNOWROB_STRING_PARSERS_H