91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
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// Copyright (c) 2001-2011 Hartmut Kaiser
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//
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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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#if !defined(BOOST_SPIRIT_QI_AUTO_NOV_29_2009_0336PM)
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#define BOOST_SPIRIT_QI_AUTO_NOV_29_2009_0336PM
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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/common_terminals.hpp>
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#include <boost/spirit/home/support/info.hpp>
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#include <boost/spirit/home/support/container.hpp>
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#include <boost/spirit/home/support/detail/hold_any.hpp>
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#include <boost/spirit/home/qi/domain.hpp>
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#include <boost/spirit/home/qi/meta_compiler.hpp>
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#include <boost/spirit/home/qi/skip_over.hpp>
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#include <boost/spirit/home/qi/parser.hpp>
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#include <boost/spirit/home/qi/auto/create_parser.hpp>
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#include <boost/mpl/bool.hpp>
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///////////////////////////////////////////////////////////////////////////////
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namespace boost { namespace spirit
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{
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///////////////////////////////////////////////////////////////////////////
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// Enablers
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///////////////////////////////////////////////////////////////////////////
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template <>
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struct use_terminal<qi::domain, tag::auto_> // enables auto_
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: mpl::true_ {};
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}}
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///////////////////////////////////////////////////////////////////////////////
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namespace boost { namespace spirit { namespace qi
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{
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#ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
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using spirit::auto_;
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#endif
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using spirit::auto_type;
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///////////////////////////////////////////////////////////////////////////
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template <typename Modifiers>
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struct auto_parser
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: parser<auto_parser<Modifiers> >
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{
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template <typename Context, typename Iterator>
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struct attribute
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{
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typedef spirit::hold_any type;
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};
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auto_parser(Modifiers const& modifiers)
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: modifiers_(modifiers) {}
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template <typename Iterator, typename Context, typename Skipper
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, typename Attribute>
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bool parse(Iterator& first, Iterator const& last
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, Context& context, Skipper const& skipper, Attribute& attr) const
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{
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return compile<qi::domain>(create_parser<Attribute>(), modifiers_)
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.parse(first, last, context, skipper, attr);
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}
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template <typename Context>
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info what(Context& /*context*/) const
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{
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return info("auto_");
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}
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Modifiers modifiers_;
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};
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///////////////////////////////////////////////////////////////////////////
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// Generator generators: make_xxx function (objects)
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///////////////////////////////////////////////////////////////////////////
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template <typename Modifiers>
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struct make_primitive<tag::auto_, Modifiers>
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{
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typedef auto_parser<Modifiers> result_type;
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result_type operator()(unused_type, Modifiers const& modifiers) const
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{
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return result_type(modifiers);
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}
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};
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}}}
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#endif
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