| /*============================================================================= |
| Copyright (c) 2001-2010 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) |
| ==============================================================================*/ |
| #if !defined(BOOST_SPIRIT_GRAMMAR_FEBRUARY_19_2007_0236PM) |
| #define BOOST_SPIRIT_GRAMMAR_FEBRUARY_19_2007_0236PM |
| |
| #if defined(_MSC_VER) |
| #pragma once |
| #endif |
| |
| #include <boost/spirit/home/support/unused.hpp> |
| #include <boost/spirit/home/support/info.hpp> |
| #include <boost/spirit/home/support/assert_msg.hpp> |
| #include <boost/spirit/home/qi/domain.hpp> |
| #include <boost/spirit/home/qi/nonterminal/rule.hpp> |
| #include <boost/spirit/home/qi/reference.hpp> |
| #include <boost/noncopyable.hpp> |
| #include <boost/type_traits/is_same.hpp> |
| |
| namespace boost { namespace spirit { namespace qi |
| { |
| template < |
| typename Iterator |
| , typename T1 = unused_type |
| , typename T2 = unused_type |
| , typename T3 = unused_type |
| , typename T4 = unused_type |
| > |
| struct grammar |
| : proto::extends< |
| typename proto::terminal< |
| reference<rule<Iterator, T1, T2, T3, T4> const> |
| >::type |
| , grammar<Iterator, T1, T2, T3, T4> |
| > |
| , parser<grammar<Iterator, T1, T2, T3, T4> > |
| , noncopyable |
| { |
| typedef Iterator iterator_type; |
| typedef rule<Iterator, T1, T2, T3, T4> start_type; |
| typedef typename start_type::sig_type sig_type; |
| typedef typename start_type::locals_type locals_type; |
| typedef typename start_type::skipper_type skipper_type; |
| typedef typename start_type::encoding_type encoding_type; |
| typedef grammar<Iterator, T1, T2, T3, T4> base_type; |
| typedef reference<start_type const> reference_; |
| typedef typename proto::terminal<reference_>::type terminal; |
| |
| static size_t const params_size = start_type::params_size; |
| |
| template <typename Context, typename Iterator_> |
| struct attribute |
| { |
| typedef typename start_type::attr_type type; |
| }; |
| |
| grammar( |
| start_type const& start |
| , std::string const& name_ = "unnamed-grammar") |
| : proto::extends<terminal, base_type>(terminal::make(reference_(start))) |
| , name_(name_) |
| {} |
| |
| // This constructor is used to catch if the start rule is not |
| // compatible with the grammar. |
| template <typename Iterator_, |
| typename T1_, typename T2_, typename T3_, typename T4_> |
| grammar( |
| rule<Iterator_, T1_, T2_, T3_, T4_> const& |
| , std::string const& = "unnamed-grammar") |
| { |
| // If you see the assertion below failing then the start rule |
| // passed to the constructor of the grammar is not compatible with |
| // the grammar (i.e. it uses different template parameters). |
| BOOST_SPIRIT_ASSERT_MSG( |
| (is_same<start_type, rule<Iterator_, T1_, T2_, T3_, T4_> >::value) |
| , incompatible_start_rule, (rule<Iterator_, T1_, T2_, T3_, T4_>)); |
| } |
| |
| std::string name() const |
| { |
| return name_; |
| } |
| |
| void name(std::string const& str) |
| { |
| name_ = str; |
| } |
| |
| template <typename Context, typename Skipper, typename Attribute> |
| bool parse(Iterator& first, Iterator const& last |
| , Context& context, Skipper const& skipper |
| , Attribute& attr) const |
| { |
| return this->proto_base().child0.parse( |
| first, last, context, skipper, attr); |
| } |
| |
| template <typename Context> |
| info what(Context& context) const |
| { |
| return info(name_); |
| } |
| |
| // bring in the operator() overloads |
| start_type const& get_parameterized_subject() const |
| { return this->proto_base().child0.ref.get(); } |
| typedef start_type parameterized_subject_type; |
| #include <boost/spirit/home/qi/nonterminal/detail/fcall.hpp> |
| |
| std::string name_; |
| |
| }; |
| }}} |
| |
| #endif |