| 1 | // Copyright (c) 2001-2011 Hartmut Kaiser |
| 2 | // |
| 3 | // Distributed under the Boost Software License, Version 1.0. (See accompanying |
| 4 | // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| 5 | |
| 6 | #if !defined(BOOST_SPIRIT_QI_AUTO_NOV_29_2009_0336PM) |
| 7 | #define BOOST_SPIRIT_QI_AUTO_NOV_29_2009_0336PM |
| 8 | |
| 9 | #if defined(_MSC_VER) |
| 10 | #pragma once |
| 11 | #endif |
| 12 | |
| 13 | #include <boost/spirit/home/support/common_terminals.hpp> |
| 14 | #include <boost/spirit/home/support/info.hpp> |
| 15 | #include <boost/spirit/home/support/container.hpp> |
| 16 | #include <boost/spirit/home/support/detail/hold_any.hpp> |
| 17 | #include <boost/spirit/home/qi/domain.hpp> |
| 18 | #include <boost/spirit/home/qi/meta_compiler.hpp> |
| 19 | #include <boost/spirit/home/qi/skip_over.hpp> |
| 20 | #include <boost/spirit/home/qi/parser.hpp> |
| 21 | #include <boost/spirit/home/qi/auto/create_parser.hpp> |
| 22 | #include <boost/mpl/bool.hpp> |
| 23 | |
| 24 | /////////////////////////////////////////////////////////////////////////////// |
| 25 | namespace boost { namespace spirit |
| 26 | { |
| 27 | /////////////////////////////////////////////////////////////////////////// |
| 28 | // Enablers |
| 29 | /////////////////////////////////////////////////////////////////////////// |
| 30 | template <> |
| 31 | struct use_terminal<qi::domain, tag::auto_> // enables auto_ |
| 32 | : mpl::true_ {}; |
| 33 | }} |
| 34 | |
| 35 | /////////////////////////////////////////////////////////////////////////////// |
| 36 | namespace boost { namespace spirit { namespace qi |
| 37 | { |
| 38 | #ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS |
| 39 | using spirit::auto_; |
| 40 | #endif |
| 41 | using spirit::auto_type; |
| 42 | |
| 43 | /////////////////////////////////////////////////////////////////////////// |
| 44 | template <typename Modifiers> |
| 45 | struct auto_parser |
| 46 | : parser<auto_parser<Modifiers> > |
| 47 | { |
| 48 | template <typename Context, typename Iterator> |
| 49 | struct attribute |
| 50 | { |
| 51 | typedef spirit::hold_any type; |
| 52 | }; |
| 53 | |
| 54 | auto_parser(Modifiers const& modifiers) |
| 55 | : modifiers_(modifiers) {} |
| 56 | |
| 57 | template <typename Iterator, typename Context, typename Skipper |
| 58 | , typename Attribute> |
| 59 | bool parse(Iterator& first, Iterator const& last |
| 60 | , Context& context, Skipper const& skipper, Attribute& attr) const |
| 61 | { |
| 62 | return compile<qi::domain>(create_parser<Attribute>(), modifiers_) |
| 63 | .parse(first, last, context, skipper, attr); |
| 64 | } |
| 65 | |
| 66 | template <typename Context> |
| 67 | info what(Context& /*context*/) const |
| 68 | { |
| 69 | return info("auto_" ); |
| 70 | } |
| 71 | |
| 72 | Modifiers modifiers_; |
| 73 | }; |
| 74 | |
| 75 | /////////////////////////////////////////////////////////////////////////// |
| 76 | // Generator generators: make_xxx function (objects) |
| 77 | /////////////////////////////////////////////////////////////////////////// |
| 78 | template <typename Modifiers> |
| 79 | struct make_primitive<tag::auto_, Modifiers> |
| 80 | { |
| 81 | typedef auto_parser<Modifiers> result_type; |
| 82 | |
| 83 | result_type operator()(unused_type, Modifiers const& modifiers) const |
| 84 | { |
| 85 | return result_type(modifiers); |
| 86 | } |
| 87 | }; |
| 88 | }}} |
| 89 | |
| 90 | #endif |
| 91 | |