137 lines
3.4 KiB
C++
137 lines
3.4 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2003 Joel de Guzman
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Copyright (c) 2003 Hartmut Kaiser
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http://spirit.sourceforge.net/
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#include <iostream>
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#include <boost/detail/lightweight_test.hpp>
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//#define BOOST_SPIRIT_DEBUG
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#define BOOST_SPIRIT_SINGLE_GRAMMAR_INSTANCE
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#include <boost/spirit/include/classic_core.hpp>
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#include <boost/spirit/include/classic_grammar_def.hpp>
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using namespace BOOST_SPIRIT_CLASSIC_NS;
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//////////////////////////////////////////////////////////////////////////////
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//
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// Grammar tests
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//
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///////////////////////////////////////////////////////////////////////////////
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struct num_list : public grammar<num_list>
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{
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enum {
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default_rule = 0,
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num_rule = 1
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};
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template <typename ScannerT>
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struct definition
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: public grammar_def<rule<ScannerT>, same>
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{
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definition(num_list const& /*self*/)
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{
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num = int_p;
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r = num >> *(',' >> num);
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this->start_parsers(r, num);
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BOOST_SPIRIT_DEBUG_RULE(num);
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BOOST_SPIRIT_DEBUG_RULE(r);
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}
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rule<ScannerT> r, num;
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rule<ScannerT> const& start() const { return r; }
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};
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};
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struct num_list_ex : public grammar<num_list_ex>
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{
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enum {
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default_rule = 0,
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num_rule = 1,
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integer_rule = 2
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};
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template <typename ScannerT>
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struct definition
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: public grammar_def<rule<ScannerT>, same, int_parser<int, 10, 1, -1> >
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{
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definition(num_list_ex const& /*self*/)
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{
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num = integer;
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r = num >> *(',' >> num);
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this->start_parsers(r, num, integer);
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BOOST_SPIRIT_DEBUG_RULE(num);
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BOOST_SPIRIT_DEBUG_RULE(r);
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}
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rule<ScannerT> r, num;
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int_parser<int, 10, 1, -1> integer;
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rule<ScannerT> const& start() const { return r; }
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};
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};
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void
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grammar_tests()
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{
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num_list nlist;
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BOOST_SPIRIT_DEBUG_GRAMMAR(nlist);
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parse_info<char const*> pi;
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pi = parse("123, 456, 789", nlist, space_p);
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BOOST_TEST(pi.hit);
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BOOST_TEST(pi.full);
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num_list_ex nlistex;
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BOOST_SPIRIT_DEBUG_GRAMMAR(nlistex);
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pi = parse("123, 456, 789", nlist.use_parser<num_list::default_rule>(),
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space_p);
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BOOST_TEST(pi.hit);
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BOOST_TEST(pi.full);
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pi = parse("123", nlist.use_parser<num_list::num_rule>(), space_p);
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BOOST_TEST(pi.hit);
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BOOST_TEST(pi.full);
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pi = parse("123, 456, 789", nlistex, space_p);
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BOOST_TEST(pi.hit);
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BOOST_TEST(pi.full);
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pi = parse("123, 456, 789",
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nlistex.use_parser<num_list_ex::default_rule>(), space_p);
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BOOST_TEST(pi.hit);
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BOOST_TEST(pi.full);
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pi = parse("123", nlistex.use_parser<num_list_ex::num_rule>(), space_p);
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BOOST_TEST(pi.hit);
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BOOST_TEST(pi.full);
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pi = parse("123", nlistex.use_parser<num_list_ex::integer_rule>(),
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space_p);
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BOOST_TEST(pi.hit);
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BOOST_TEST(pi.full);
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// Main
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//
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///////////////////////////////////////////////////////////////////////////////
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int
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main()
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{
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grammar_tests();
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return boost::report_errors();
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}
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