135 lines
4.7 KiB
C++
135 lines
4.7 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2011 Joel de Guzman
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(BOOST_SPIRIT_GRAMMAR_FEBRUARY_19_2007_0236PM)
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#define BOOST_SPIRIT_GRAMMAR_FEBRUARY_19_2007_0236PM
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#if defined(_MSC_VER)
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#pragma once
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#endif
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#include <boost/spirit/home/support/unused.hpp>
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#include <boost/spirit/home/support/info.hpp>
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#include <boost/spirit/home/support/assert_msg.hpp>
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#include <boost/spirit/home/qi/domain.hpp>
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#include <boost/spirit/home/qi/nonterminal/rule.hpp>
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#include <boost/spirit/home/qi/nonterminal/nonterminal_fwd.hpp>
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#include <boost/spirit/home/qi/reference.hpp>
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#include <boost/noncopyable.hpp>
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#include <boost/proto/extends.hpp>
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#include <boost/proto/traits.hpp>
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#include <boost/type_traits/is_same.hpp>
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namespace boost { namespace spirit { namespace qi
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{
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template <
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typename Iterator, typename T1, typename T2, typename T3
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, typename T4>
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struct grammar
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: proto::extends<
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typename proto::terminal<
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reference<rule<Iterator, T1, T2, T3, T4> const>
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>::type
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, grammar<Iterator, T1, T2, T3, T4>
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>
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, parser<grammar<Iterator, T1, T2, T3, T4> >
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, noncopyable
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{
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typedef Iterator iterator_type;
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typedef rule<Iterator, T1, T2, T3, T4> start_type;
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typedef typename start_type::sig_type sig_type;
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typedef typename start_type::locals_type locals_type;
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typedef typename start_type::skipper_type skipper_type;
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typedef typename start_type::encoding_type encoding_type;
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typedef grammar<Iterator, T1, T2, T3, T4> base_type;
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typedef reference<start_type const> reference_;
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typedef typename proto::terminal<reference_>::type terminal;
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static size_t const params_size = start_type::params_size;
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template <typename Context, typename Iterator_>
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struct attribute
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{
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typedef typename start_type::attr_type type;
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};
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grammar(
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start_type const& start
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, std::string const& name = "unnamed-grammar")
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: proto::extends<terminal, base_type>(terminal::make(reference_(start)))
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, name_(name)
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{}
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// This constructor is used to catch if the start rule is not
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// compatible with the grammar.
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template <typename Iterator_,
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typename T1_, typename T2_, typename T3_, typename T4_>
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grammar(
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rule<Iterator_, T1_, T2_, T3_, T4_> const&
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, std::string const& = "unnamed-grammar")
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{
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// If you see the assertion below failing then the start rule
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// passed to the constructor of the grammar is not compatible with
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// the grammar (i.e. it uses different template parameters).
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BOOST_SPIRIT_ASSERT_MSG(
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(is_same<start_type, rule<Iterator_, T1_, T2_, T3_, T4_> >::value)
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, incompatible_start_rule, (rule<Iterator_, T1_, T2_, T3_, T4_>));
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}
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std::string name() const
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{
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return name_;
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}
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void name(std::string const& str)
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{
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name_ = str;
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}
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template <typename Context, typename Skipper, typename Attribute>
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bool parse(Iterator& first, Iterator const& last
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, Context& context, Skipper const& skipper
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, Attribute& attr_) const
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{
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return this->proto_base().child0.parse(
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first, last, context, skipper, attr_);
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}
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template <typename Context>
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info what(Context&) const
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{
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return info(name_);
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}
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// bring in the operator() overloads
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start_type const& get_parameterized_subject() const
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{ return this->proto_base().child0.ref.get(); }
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typedef start_type parameterized_subject_type;
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#include <boost/spirit/home/qi/nonterminal/detail/fcall.hpp>
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std::string name_;
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};
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}}}
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namespace boost { namespace spirit { namespace traits
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{
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///////////////////////////////////////////////////////////////////////////
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template <
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typename IteratorA, typename IteratorB, typename Attribute
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, typename Context, typename T1, typename T2, typename T3, typename T4>
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struct handles_container<
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qi::grammar<IteratorA, T1, T2, T3, T4>, Attribute, Context, IteratorB>
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: traits::is_container<
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typename attribute_of<
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qi::grammar<IteratorA, T1, T2, T3, T4>, Context, IteratorB
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>::type
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>
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{};
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}}}
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#endif
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