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/*=============================================================================
Copyright (c) 2001-2014 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(BOOST_SPIRIT_X3_REAL_APRIL_18_2006_0850AM)
#define BOOST_SPIRIT_X3_REAL_APRIL_18_2006_0850AM
#include <boost/spirit/home/x3/core/parser.hpp>
#include <boost/spirit/home/x3/core/skip_over.hpp>
#include <boost/spirit/home/x3/numeric/real_policies.hpp>
#include <boost/spirit/home/x3/support/numeric_utils/extract_real.hpp>
namespace boost { namespace spirit { namespace x3
{
template <typename T, typename RealPolicies = real_policies<T> >
struct real_parser : parser<real_parser<T, RealPolicies> >
{
typedef T attribute_type;
static bool const has_attribute = true;
real_parser()
: policies() {}
real_parser(RealPolicies const& policies)
: policies(policies) {}
template <typename Iterator, typename Context>
bool parse(Iterator& first, Iterator const& last
, Context& context, unused_type, T& attr_) const
{
x3::skip_over(first, last, context);
return extract_real<T, RealPolicies>::parse(first, last, attr_, policies);
}
template <typename Iterator, typename Context, typename Attribute>
bool parse(Iterator& first, Iterator const& last
, Context& context, unused_type, Attribute& attr_param) const
{
// this case is called when Attribute is not T
T attr_;
if (parse(first, last, context, unused, attr_))
{
traits::move_to(attr_, attr_param);
return true;
}
return false;
}
RealPolicies policies;
};
typedef real_parser<float> float_type;
float_type const float_ = {};
typedef real_parser<double> double_type;
double_type const double_ = {};
}}}
#endif
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