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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 18:24:20 +0000
commit483eb2f56657e8e7f419ab1a4fab8dce9ade8609 (patch)
treee5d88d25d870d5dedacb6bbdbe2a966086a0a5cf /src/boost/libs/spirit/example/qi/employee.cpp
parentInitial commit. (diff)
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Adding upstream version 14.2.21.upstream/14.2.21upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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diff --git a/src/boost/libs/spirit/example/qi/employee.cpp b/src/boost/libs/spirit/example/qi/employee.cpp
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+/*=============================================================================
+ Copyright (c) 2002-2010 Joel de Guzman
+
+ Distributed under the Boost Software License, Version 1.0. (See accompanying
+ file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+=============================================================================*/
+///////////////////////////////////////////////////////////////////////////////
+//
+// A parser for arbitrary tuples. This example presents a parser
+// for an employee structure.
+//
+// [ JDG May 9, 2007 ]
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#include <boost/config/warning_disable.hpp>
+#include <boost/spirit/include/qi.hpp>
+#include <boost/spirit/include/phoenix_core.hpp>
+#include <boost/spirit/include/phoenix_operator.hpp>
+#include <boost/spirit/include/phoenix_object.hpp>
+#include <boost/fusion/include/adapt_struct.hpp>
+#include <boost/fusion/include/io.hpp>
+
+#include <iostream>
+#include <string>
+#include <complex>
+
+namespace client
+{
+ namespace qi = boost::spirit::qi;
+ namespace ascii = boost::spirit::ascii;
+
+ ///////////////////////////////////////////////////////////////////////////
+ // Our employee struct
+ ///////////////////////////////////////////////////////////////////////////
+ //[tutorial_employee_struct
+ struct employee
+ {
+ int age;
+ std::string surname;
+ std::string forename;
+ double salary;
+ };
+ //]
+}
+
+// We need to tell fusion about our employee struct
+// to make it a first-class fusion citizen. This has to
+// be in global scope.
+
+//[tutorial_employee_adapt_struct
+BOOST_FUSION_ADAPT_STRUCT(
+ client::employee,
+ (int, age)
+ (std::string, surname)
+ (std::string, forename)
+ (double, salary)
+)
+//]
+
+namespace client
+{
+ ///////////////////////////////////////////////////////////////////////////////
+ // Our employee parser
+ ///////////////////////////////////////////////////////////////////////////////
+ //[tutorial_employee_parser
+ template <typename Iterator>
+ struct employee_parser : qi::grammar<Iterator, employee(), ascii::space_type>
+ {
+ employee_parser() : employee_parser::base_type(start)
+ {
+ using qi::int_;
+ using qi::lit;
+ using qi::double_;
+ using qi::lexeme;
+ using ascii::char_;
+
+ quoted_string %= lexeme['"' >> +(char_ - '"') >> '"'];
+
+ start %=
+ lit("employee")
+ >> '{'
+ >> int_ >> ','
+ >> quoted_string >> ','
+ >> quoted_string >> ','
+ >> double_
+ >> '}'
+ ;
+ }
+
+ qi::rule<Iterator, std::string(), ascii::space_type> quoted_string;
+ qi::rule<Iterator, employee(), ascii::space_type> start;
+ };
+ //]
+}
+
+////////////////////////////////////////////////////////////////////////////
+// Main program
+////////////////////////////////////////////////////////////////////////////
+int
+main()
+{
+ std::cout << "/////////////////////////////////////////////////////////\n\n";
+ std::cout << "\t\tAn employee parser for Spirit...\n\n";
+ std::cout << "/////////////////////////////////////////////////////////\n\n";
+
+ std::cout
+ << "Give me an employee of the form :"
+ << "employee{age, \"surname\", \"forename\", salary } \n";
+ std::cout << "Type [q or Q] to quit\n\n";
+
+ using boost::spirit::ascii::space;
+ typedef std::string::const_iterator iterator_type;
+ typedef client::employee_parser<iterator_type> employee_parser;
+
+ employee_parser g; // Our grammar
+ std::string str;
+ while (getline(std::cin, str))
+ {
+ if (str.empty() || str[0] == 'q' || str[0] == 'Q')
+ break;
+
+ client::employee emp;
+ std::string::const_iterator iter = str.begin();
+ std::string::const_iterator end = str.end();
+ bool r = phrase_parse(iter, end, g, space, emp);
+
+ if (r && iter == end)
+ {
+ std::cout << boost::fusion::tuple_open('[');
+ std::cout << boost::fusion::tuple_close(']');
+ std::cout << boost::fusion::tuple_delimiter(", ");
+
+ std::cout << "-------------------------\n";
+ std::cout << "Parsing succeeded\n";
+ std::cout << "got: " << boost::fusion::as_vector(emp) << std::endl;
+ std::cout << "\n-------------------------\n";
+ }
+ else
+ {
+ std::cout << "-------------------------\n";
+ std::cout << "Parsing failed\n";
+ std::cout << "-------------------------\n";
+ }
+ }
+
+ std::cout << "Bye... :-) \n\n";
+ return 0;
+}
+
+