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/*=============================================================================
Copyright (c) 2011 Jamboree
Copyright (c) 2014 Lee Clagett
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_X3_SEEK_APRIL_13_2014_1920PM)
#define BOOST_SPIRIT_X3_SEEK_APRIL_13_2014_1920PM
#if defined(_MSC_VER)
#pragma once
#endif
#include <boost/spirit/home/x3/core/parser.hpp>
namespace boost { namespace spirit { namespace x3
{
template<typename Subject>
struct seek_directive : unary_parser<Subject, seek_directive<Subject>>
{
typedef unary_parser<Subject, seek_directive<Subject>> base_type;
static bool const is_pass_through_unary = true;
static bool const handles_container = Subject::handles_container;
seek_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
{
Iterator current(first);
for (/**/; current != last; ++current)
{
if (this->subject.parse(current, last, context, rcontext, attr))
{
first = current;
return true;
}
}
// Test for when subjects match on input empty. Example:
// comment = "//" >> seek[eol | eoi]
if (this->subject.parse(current, last, context, rcontext, attr))
{
first = current;
return true;
}
return false;
}
};
struct seek_gen
{
template<typename Subject>
seek_directive<typename extension::as_parser<Subject>::value_type>
operator[](Subject const& subject) const
{
return {as_parser(subject)};
}
};
seek_gen const seek = seek_gen();
}}}
#endif
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