Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2001-2011 Joel de Guzman
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: =============================================================================*/
Chris@16: #if !defined(SPIRIT_PASS_FUNCTION_FEBRUARY_05_2007_1138AM)
Chris@16: #define SPIRIT_PASS_FUNCTION_FEBRUARY_05_2007_1138AM
Chris@16: 
Chris@16: #if defined(_MSC_VER)
Chris@16: #pragma once
Chris@16: #endif
Chris@16: 
Chris@16: #include <boost/spirit/home/support/unused.hpp>
Chris@16: #include <boost/optional.hpp>
Chris@16: 
Chris@16: namespace boost { namespace spirit { namespace qi { namespace detail
Chris@16: {
Chris@16:     template <typename Iterator, typename Context, typename Skipper>
Chris@16:     struct pass_function
Chris@16:     {
Chris@16:         pass_function(
Chris@16:             Iterator& first_, Iterator const& last_
Chris@16:           , Context& context_, Skipper const& skipper_)
Chris@16:           : first(first_)
Chris@16:           , last(last_)
Chris@16:           , context(context_)
Chris@16:           , skipper(skipper_)
Chris@16:         {
Chris@16:         }
Chris@16: 
Chris@16:         template <typename Component, typename Attribute>
Chris@16:         bool operator()(Component const& component, Attribute& attr)
Chris@16:         {
Chris@16:             // return true if the parser succeeds
Chris@16:             return component.parse(first, last, context, skipper, attr);
Chris@16:         }
Chris@16: 
Chris@16:         template <typename Component, typename Attribute>
Chris@16:         bool operator()(Component const& component, boost::optional<Attribute>& attr)
Chris@16:         {
Chris@16:             // return true if the parser succeeds
Chris@16:             Attribute val;
Chris@16:             if (component.parse(first, last, context, skipper, val))
Chris@16:             {
Chris@16:                 attr = val;
Chris@16:                 return true;
Chris@16:             }
Chris@16:             return false;
Chris@16:         }
Chris@16: 
Chris@16:         template <typename Component>
Chris@16:         bool operator()(Component const& component)
Chris@16:         {
Chris@16:             // return true if the parser succeeds
Chris@16:             return component.parse(first, last, context, skipper, unused);
Chris@16:         }
Chris@16: 
Chris@16:         Iterator& first;
Chris@16:         Iterator const& last;
Chris@16:         Context& context;
Chris@16:         Skipper const& skipper;
Chris@16: 
Chris@16:     private:
Chris@16:         // silence MSVC warning C4512: assignment operator could not be generated
Chris@16:         pass_function& operator= (pass_function const&);
Chris@16:     };
Chris@16: }}}}
Chris@16: 
Chris@16: #endif