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Diffstat (limited to 'boost/spirit/home/x3/directive/raw.hpp')
-rw-r--r-- | boost/spirit/home/x3/directive/raw.hpp | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/boost/spirit/home/x3/directive/raw.hpp b/boost/spirit/home/x3/directive/raw.hpp new file mode 100644 index 0000000000..e6bcd9a3a1 --- /dev/null +++ b/boost/spirit/home/x3/directive/raw.hpp @@ -0,0 +1,70 @@ +/*============================================================================= + Copyright (c) 2014 Joel de Guzman + + 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(SPIRIT_X3_RAW_APRIL_9_2007_0912AM) +#define SPIRIT_X3_RAW_APRIL_9_2007_0912AM + +#include <boost/spirit/home/x3/core/skip_over.hpp> +#include <boost/spirit/home/x3/core/parser.hpp> +#include <boost/spirit/home/x3/support/traits/move_to.hpp> +#include <boost/range/iterator_range.hpp> + +namespace boost { namespace spirit { namespace x3 +{ + // this is a pseudo attribute type indicating that the parser wants the + // iterator range pointing to the [first, last) matching characters from + // the input iterators. + struct raw_attribute_type {}; + + template <typename Subject> + struct raw_directive : unary_parser<Subject, raw_directive<Subject>> + { + typedef unary_parser<Subject, raw_directive<Subject> > base_type; + typedef raw_attribute_type attribute_type; + static bool const handles_container = Subject::handles_container; + typedef Subject subject_type; + + raw_directive(Subject const& subject) + : base_type(subject) {} + + template <typename Iterator, typename Context + , typename RContext, typename Attribute> + bool parse(Iterator& first, Iterator const& last + , Context const& context, RContext& rcontext, Attribute& attr) const + { + x3::skip_over(first, last, context); + Iterator i = first; + if (this->subject.parse(i, last, context, rcontext, unused)) + { + traits::move_to(first, i, attr); + first = i; + return true; + } + return false; + } + + template <typename Iterator, typename Context, typename RContext> + bool parse(Iterator& first, Iterator const& last + , Context const& context, RContext& rcontext, unused_type) const + { + return this->subject.parse(first, last, context, rcontext, unused); + } + }; + + struct raw_gen + { + template <typename Subject> + raw_directive<typename extension::as_parser<Subject>::value_type> + operator[](Subject const& subject) const + { + return {as_parser(subject)}; + } + }; + + raw_gen const raw = raw_gen(); +}}} + +#endif |