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/*=============================================================================
Copyright (c) 2001-2014 Joel de Guzman
Copyright (c) 2001-2011 Hartmut Kaiser
Copyright (c) 2013 Agustin Berge
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_NO_SKIP_JAN_16_2010_0802PM)
#define SPIRIT_NO_SKIP_JAN_16_2010_0802PM
#include <boost/spirit/home/x3/support/context.hpp>
#include <boost/spirit/home/x3/support/unused.hpp>
#include <boost/spirit/home/x3/core/skip_over.hpp>
#include <boost/spirit/home/x3/core/parser.hpp>
#include <boost/type_traits/remove_reference.hpp>
#include <boost/utility/enable_if.hpp>
namespace boost { namespace spirit { namespace x3
{
// same as lexeme[], but does not pre-skip
template <typename Subject>
struct no_skip_directive : unary_parser<Subject, no_skip_directive<Subject>>
{
typedef unary_parser<Subject, no_skip_directive<Subject> > base_type;
static bool const is_pass_through_unary = true;
static bool const handles_container = Subject::handles_container;
no_skip_directive(Subject const& subject)
: base_type(subject) {}
template <typename Iterator, typename Context
, typename RContext, typename Attribute>
typename enable_if<has_skipper<Context>, bool>::type
parse(Iterator& first, Iterator const& last
, Context const& context, RContext& rcontext, Attribute& attr) const
{
auto const& skipper = x3::get<skipper_tag>(context);
typedef unused_skipper<
typename remove_reference<decltype(skipper)>::type>
unused_skipper_type;
unused_skipper_type unused_skipper(skipper);
return this->subject.parse(
first, last
, make_context<skipper_tag>(unused_skipper, context)
, rcontext
, attr);
}
template <typename Iterator, typename Context
, typename RContext, typename Attribute>
typename disable_if<has_skipper<Context>, bool>::type
parse(Iterator& first, Iterator const& last
, Context const& context, RContext& rcontext, Attribute& attr) const
{
return this->subject.parse(
first, last
, context
, rcontext
, attr);
}
};
struct no_skip_gen
{
template <typename Subject>
no_skip_directive<typename extension::as_parser<Subject>::value_type>
operator[](Subject const& subject) const
{
return { as_parser(subject) };
}
};
auto const no_skip = no_skip_gen{};
}}}
#endif
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