84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2011 Joel de Guzman
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(BOOST_SPIRIT_SUCCESS_HANDLER_FEBRUARY_25_2011_1051AM)
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#define BOOST_SPIRIT_SUCCESS_HANDLER_FEBRUARY_25_2011_1051AM
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#if defined(_MSC_VER)
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#pragma once
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#endif
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#include <boost/spirit/home/qi/nonterminal/rule.hpp>
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#include <boost/function.hpp>
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namespace boost { namespace spirit { namespace qi
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{
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template <
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typename Iterator, typename Context
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, typename Skipper, typename F
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>
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struct success_handler
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{
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typedef function<
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bool(Iterator& first, Iterator const& last
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, Context& context
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, Skipper const& skipper
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)>
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function_type;
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success_handler(function_type subject_, F f_)
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: subject(subject_)
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, f(f_)
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{
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}
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bool operator()(
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Iterator& first, Iterator const& last
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, Context& context, Skipper const& skipper) const
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{
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Iterator i = first;
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bool r = subject(i, last, context, skipper);
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if (r)
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{
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typedef
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fusion::vector<
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Iterator&
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, Iterator const&
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, Iterator const&>
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params;
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skip_over(first, last, skipper);
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params args(first, last, i);
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f(args, context);
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first = i;
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}
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return r;
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}
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function_type subject;
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F f;
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};
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template <
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typename Iterator, typename T0, typename T1, typename T2
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, typename F>
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void on_success(rule<Iterator, T0, T1, T2>& r, F f)
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{
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typedef rule<Iterator, T0, T1, T2> rule_type;
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typedef
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success_handler<
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Iterator
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, typename rule_type::context_type
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, typename rule_type::skipper_type
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, F>
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success_handler;
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r.f = success_handler(r.f, f);
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}
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}}}
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#endif
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