60 lines
1.8 KiB
C++
60 lines
1.8 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(SPIRIT_FAIL_FUNCTION_APRIL_22_2006_0159PM)
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#define SPIRIT_FAIL_FUNCTION_APRIL_22_2006_0159PM
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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/support/unused.hpp>
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namespace boost { namespace spirit { namespace qi { namespace detail
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{
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template <typename Iterator, typename Context, typename Skipper>
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struct fail_function
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{
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typedef Iterator iterator_type;
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typedef Context context_type;
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fail_function(
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Iterator& first, Iterator const& last
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, Context& context, Skipper const& skipper)
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: first(first)
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, last(last)
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, context(context)
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, skipper(skipper)
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{
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}
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template <typename Component, typename Attribute>
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bool operator()(Component const& component, Attribute& attr) const
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{
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// return true if the parser fails
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return !component.parse(first, last, context, skipper, attr);
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}
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template <typename Component>
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bool operator()(Component const& component) const
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{
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// return true if the parser fails
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return !component.parse(first, last, context, skipper, unused);
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}
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Iterator& first;
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Iterator const& last;
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Context& context;
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Skipper const& skipper;
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private:
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// silence MSVC warning C4512: assignment operator could not be generated
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fail_function& operator= (fail_function const&);
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};
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}}}}
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#endif
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