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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