projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /*============================================================================= |
| 2 | Copyright (c) 2009 Chris Hoeppler | |
| 3 | Copyright (c) 2014 Lee Clagett | |
| 4 | ||
| 5 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
| 6 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
| 7 | ==============================================================================*/ | |
| 8 | ||
| 9 | #if !defined(BOOST_SPIRIT_X3_CONFIX_MAY_30_2014_1819PM) | |
| 10 | #define BOOST_SPIRIT_X3_CONFIX_MAY_30_2014_1819PM | |
| 11 | ||
| 12 | #include <boost/spirit/home/x3/core/parser.hpp> | |
| 13 | ||
| 14 | namespace boost { namespace spirit { namespace x3 | |
| 15 | { | |
| 16 | template<typename Prefix, typename Subject, typename Postfix> | |
| 17 | struct confix_directive : | |
| 18 | unary_parser<Subject, confix_directive<Prefix, Subject, Postfix>> | |
| 19 | { | |
| 20 | typedef unary_parser< | |
| 21 | Subject, confix_directive<Prefix, Subject, Postfix>> base_type; | |
| 22 | static bool const is_pass_through_unary = true; | |
| 23 | static bool const handles_container = Subject::handles_container; | |
| 24 | ||
| 25 | confix_directive(Prefix const& prefix | |
| 26 | , Subject const& subject | |
| 27 | , Postfix const& postfix) : | |
| 28 | base_type(subject), | |
| 29 | prefix(prefix), | |
| 30 | postfix(postfix) | |
| 31 | { | |
| 32 | } | |
| 33 | ||
| 34 | template<typename Iterator, typename Context | |
| 35 | , typename RContext, typename Attribute> | |
| 36 | bool parse( | |
| 37 | Iterator& first, Iterator const& last | |
| 38 | , Context& context, RContext& rcontext, Attribute& attr) const | |
| 39 | { | |
| 40 | Iterator save = first; | |
| 41 | ||
| 42 | if (!(prefix.parse(first, last, context, rcontext, unused) && | |
| 43 | this->subject.parse(first, last, context, rcontext, attr) && | |
| 44 | postfix.parse(first, last, context, rcontext, unused))) | |
| 45 | { | |
| 46 | first = save; | |
| 47 | return false; | |
| 48 | } | |
| 49 | ||
| 50 | return true; | |
| 51 | } | |
| 52 | ||
| 53 | Prefix prefix; | |
| 54 | Postfix postfix; | |
| 55 | }; | |
| 56 | ||
| 57 | template<typename Prefix, typename Postfix> | |
| 58 | struct confix_gen | |
| 59 | { | |
| 60 | template<typename Subject> | |
| 61 | confix_directive< | |
| 62 | Prefix, typename extension::as_parser<Subject>::value_type, Postfix> | |
| 63 | operator[](Subject const& subject) const | |
| 64 | { | |
| 65 | return { prefix, as_parser(subject), postfix }; | |
| 66 | } | |
| 67 | ||
| 68 | Prefix prefix; | |
| 69 | Postfix postfix; | |
| 70 | }; | |
| 71 | ||
| 72 | ||
| 73 | template<typename Prefix, typename Postfix> | |
| 74 | confix_gen<typename extension::as_parser<Prefix>::value_type, | |
| 75 | typename extension::as_parser<Postfix>::value_type> | |
| 76 | confix(Prefix const& prefix, Postfix const& postfix) | |
| 77 | { | |
| 78 | return { as_parser(prefix), as_parser(postfix) }; | |
| 79 | } | |
| 80 | ||
| 81 | }}} | |
| 82 | ||
| 83 | #endif |