| // Copyright (c) 2001-2010 Hartmut Kaiser |
| // |
| // 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_REPOSITORY_KARMA_CONFIX_AUG_19_2008_1041AM) |
| #define BOOST_SPIRIT_REPOSITORY_KARMA_CONFIX_AUG_19_2008_1041AM |
| |
| #if defined(_MSC_VER) |
| #pragma once |
| #endif |
| |
| #include <boost/spirit/home/support/common_terminals.hpp> |
| #include <boost/spirit/home/support/info.hpp> |
| #include <boost/spirit/home/support/unused.hpp> |
| #include <boost/spirit/home/karma/detail/attributes.hpp> |
| #include <boost/spirit/home/karma/domain.hpp> |
| #include <boost/spirit/home/karma/meta_compiler.hpp> |
| |
| #include <boost/spirit/repository/home/support/confix.hpp> |
| |
| #include <boost/fusion/include/vector.hpp> |
| #include <boost/mpl/or.hpp> |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| namespace boost { namespace spirit |
| { |
| /////////////////////////////////////////////////////////////////////////// |
| // Enablers |
| /////////////////////////////////////////////////////////////////////////// |
| |
| // enables confix(..., ...)[] |
| template <typename Prefix, typename Suffix> |
| struct use_directive<karma::domain |
| , terminal_ex<repository::tag::confix, fusion::vector2<Prefix, Suffix> > > |
| : mpl::true_ {}; |
| |
| // enables *lazy* confix(..., ...)[g] |
| template <> |
| struct use_lazy_directive<karma::domain, repository::tag::confix, 2> |
| : mpl::true_ {}; |
| |
| }} |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| namespace boost { namespace spirit { namespace repository { namespace karma |
| { |
| using repository::confix_type; |
| using repository::confix; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| template <typename Subject, typename Prefix, typename Suffix> |
| struct confix_generator |
| : spirit::karma::primitive_generator<confix_generator<Subject, Prefix, Suffix> > |
| { |
| typedef Subject subject_type; |
| |
| template <typename Context, typename Iterator> |
| struct attribute |
| : traits::attribute_of<subject_type, Context, Iterator> |
| {}; |
| |
| confix_generator(Subject const& subject, Prefix const& prefix |
| , Suffix const& suffix) |
| : subject(subject), prefix(prefix), suffix(suffix) {} |
| |
| /////////////////////////////////////////////////////////////////////// |
| template <typename OutputIterator, typename Context, typename Delimiter |
| , typename Attribute> |
| bool generate(OutputIterator& sink, Context& ctx, Delimiter const& d |
| , Attribute const& attr) const |
| { |
| // generate the prefix, the embedded item and the suffix |
| return prefix.generate(sink, ctx, d, unused) && |
| subject.generate(sink, ctx, d, attr) && |
| suffix.generate(sink, ctx, d, unused); |
| } |
| |
| template <typename Context> |
| info what(Context const& ctx) const |
| { |
| return info("confix", subject.what(ctx)); |
| } |
| |
| Subject subject; |
| Prefix prefix; |
| Suffix suffix; |
| }; |
| |
| }}}} |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| namespace boost { namespace spirit { namespace karma |
| { |
| /////////////////////////////////////////////////////////////////////////// |
| // Generator generators: make_xxx function (objects) |
| /////////////////////////////////////////////////////////////////////////// |
| |
| // creates confix(..., ...)[] directive generator |
| template <typename Prefix, typename Suffix, typename Subject |
| , typename Modifiers> |
| struct make_directive< |
| terminal_ex<repository::tag::confix, fusion::vector2<Prefix, Suffix> > |
| , Subject, Modifiers> |
| { |
| typedef typename |
| result_of::compile<karma::domain, Prefix, Modifiers>::type |
| prefix_type; |
| typedef typename |
| result_of::compile<karma::domain, Suffix, Modifiers>::type |
| suffix_type; |
| |
| typedef repository::karma::confix_generator< |
| Subject, prefix_type, suffix_type> result_type; |
| |
| template <typename Terminal> |
| result_type operator()(Terminal const& term, Subject const& subject |
| , Modifiers const& modifiers) const |
| { |
| return result_type(subject |
| , compile<karma::domain>(fusion::at_c<0>(term.args), modifiers) |
| , compile<karma::domain>(fusion::at_c<1>(term.args), modifiers)); |
| } |
| }; |
| |
| }}} |
| |
| namespace boost { namespace spirit { namespace traits |
| { |
| template <typename Subject, typename Prefix, typename Suffix> |
| struct has_semantic_action< |
| repository::karma::confix_generator<Subject, Prefix, Suffix> > |
| : mpl::or_< |
| has_semantic_action<Subject> |
| , has_semantic_action<Prefix> |
| , has_semantic_action<Suffix> |
| > {}; |
| }}} |
| |
| #endif |