| /*============================================================================= |
| Copyright (c) 2001-2010 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(SPIRIT_PASS_FUNCTION_FEBRUARY_05_2007_1138AM) |
| #define SPIRIT_PASS_FUNCTION_FEBRUARY_05_2007_1138AM |
| |
| #if defined(_MSC_VER) |
| #pragma once |
| #endif |
| |
| #include <boost/spirit/home/support/unused.hpp> |
| #include <boost/optional.hpp> |
| |
| namespace boost { namespace spirit { namespace qi { namespace detail |
| { |
| template <typename Iterator, typename Context, typename Skipper> |
| struct pass_function |
| { |
| pass_function( |
| Iterator& first, Iterator const& last |
| , Context& context, Skipper const& skipper) |
| : first(first) |
| , last(last) |
| , context(context) |
| , skipper(skipper) |
| { |
| } |
| |
| template <typename Component, typename Attribute> |
| bool operator()(Component const& component, Attribute& attr) |
| { |
| // return true if the parser succeeds |
| return component.parse(first, last, context, skipper, attr); |
| } |
| |
| template <typename Component, typename Attribute> |
| bool operator()(Component const& component, boost::optional<Attribute>& attr) |
| { |
| // return true if the parser succeeds |
| Attribute val; |
| if (component.parse(first, last, context, skipper, val)) |
| { |
| attr = val; |
| return true; |
| } |
| return false; |
| } |
| |
| template <typename Component> |
| bool operator()(Component const& component) |
| { |
| // return true if the parser succeeds |
| return component.parse(first, last, context, skipper, unused); |
| } |
| |
| Iterator& first; |
| Iterator const& last; |
| Context& context; |
| Skipper const& skipper; |
| |
| private: |
| // silence MSVC warning C4512: assignment operator could not be generated |
| pass_function& operator= (pass_function const&); |
| }; |
| }}}} |
| |
| #endif |