comparison DEPENDENCIES/generic/include/boost/spirit/home/qi/auxiliary/attr.hpp @ 16:2665513ce2d3

Add boost headers

+/*=============================================================================
+    Copyright (c) 2001-2011 Hartmut Kaiser
+    Copyright (c) 2001-2011 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_ATTR_JUL_23_2008_0956AM)
+#define BOOST_SPIRIT_ATTR_JUL_23_2008_0956AM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/mpl/bool.hpp>
+#include <boost/spirit/home/qi/domain.hpp>
+#include <boost/spirit/home/qi/parser.hpp>
+#include <boost/spirit/home/qi/detail/assign_to.hpp>
+#include <boost/spirit/home/qi/meta_compiler.hpp>
+#include <boost/spirit/home/support/common_terminals.hpp>
+#include <boost/spirit/home/support/handles_container.hpp>
+#include <boost/type_traits/add_reference.hpp>
+#include <boost/type_traits/add_const.hpp>
+#include <boost/type_traits/remove_const.hpp>
+
+namespace boost { namespace spirit
+{
+    ///////////////////////////////////////////////////////////////////////////
+    // Enablers
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename A0>       // enables attr()
+    struct use_terminal<
+            qi::domain, terminal_ex<tag::attr, fusion::vector1<A0> > >
+      : mpl::true_ {};
+
+    template <>                  // enables *lazy* attr()
+    struct use_lazy_terminal<qi::domain, tag::attr, 1>
+      : mpl::true_ {};
+
+}}
+
+namespace boost { namespace spirit { namespace qi
+{
+#ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
+    using spirit::attr;
+#endif
+    using spirit::attr_type;
+
+    template <typename Value>
+    struct attr_parser : primitive_parser<attr_parser<Value> >
+    {
+        template <typename Context, typename Iterator>
+        struct attribute : remove_const<Value> {};
+
+        attr_parser(typename add_reference<Value>::type value)
+          : value_(value) {}
+
+        template <typename Iterator, typename Context
+          , typename Skipper, typename Attribute>
+        bool parse(Iterator& /*first*/, Iterator const& /*last*/
+          , Context& /*context*/, Skipper const& /*skipper*/
+          , Attribute& attr_) const
+        {
+            spirit::traits::assign_to(value_, attr_);
+            return true;        // never consume any input, succeed always
+        }
+
+        template <typename Context>
+        info what(Context& /*context*/) const
+        {
+            return info("attr");
+        }
+
+        Value value_;
+
+    private:
+        // silence MSVC warning C4512: assignment operator could not be generated
+        attr_parser& operator= (attr_parser const&);
+    };
+
+    ///////////////////////////////////////////////////////////////////////////
+    // Parser generators: make_xxx function (objects)
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename Modifiers, typename A0>
+    struct make_primitive<
+        terminal_ex<tag::attr, fusion::vector1<A0> >
+      , Modifiers>
+    {
+        typedef typename add_const<A0>::type const_value;
+        typedef attr_parser<const_value> result_type;
+
+        template <typename Terminal>
+        result_type operator()(Terminal const& term, unused_type) const
+        {
+            return result_type(fusion::at_c<0>(term.args));
+        }
+    };
+}}}
+
+namespace boost { namespace spirit { namespace traits
+{
+    ///////////////////////////////////////////////////////////////////////////
+    template <typename T, typename Attr, typename Context, typename Iterator>
+    struct handles_container<qi::attr_parser<T>, Attr, Context, Iterator>
+      : traits::is_container<Attr> {}; 
+}}}
+
+#endif
+
+