| 1 | /*============================================================================= |
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| 2 | Copyright (c) 2001-2011 Joel de Guzman |
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| 3 | |
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| 4 | Distributed under the Boost Software License, Version 1.0. (See accompanying |
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| 5 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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| 6 | =============================================================================*/ |
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| 7 | #if !defined(SPIRIT_FAIL_FUNCTION_APRIL_22_2006_0159PM) |
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| 8 | #define SPIRIT_FAIL_FUNCTION_APRIL_22_2006_0159PM |
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| 9 | |
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| 10 | #if defined(_MSC_VER) |
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| 11 | #pragma once |
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| 12 | #endif |
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| 13 | |
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| 14 | #include <boost/spirit/home/support/unused.hpp> |
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| 15 | |
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| 16 | namespace boost { namespace spirit { namespace qi { namespace detail |
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| 17 | { |
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| 18 | template <typename Iterator, typename Context, typename Skipper> |
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| 19 | struct fail_function |
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| 20 | { |
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| 21 | typedef Iterator iterator_type; |
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| 22 | typedef Context context_type; |
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| 23 | |
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| 24 | fail_function( |
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| 25 | Iterator& first_, Iterator const& last_ |
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| 26 | , Context& context_, Skipper const& skipper_) |
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| 27 | : first(first_) |
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| 28 | , last(last_) |
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| 29 | , context(context_) |
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| 30 | , skipper(skipper_) |
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| 31 | { |
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| 32 | } |
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| 33 | |
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| 34 | template <typename Component, typename Attribute> |
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| 35 | bool operator()(Component const& component, Attribute& attr) const |
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| 36 | { |
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| 37 | // return true if the parser fails |
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| 38 | return !component.parse(first, last, context, skipper, attr); |
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| 39 | } |
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| 40 | |
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| 41 | template <typename Component> |
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| 42 | bool operator()(Component const& component) const |
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| 43 | { |
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| 44 | // return true if the parser fails |
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| 45 | return !component.parse(first, last, context, skipper, unused); |
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| 46 | } |
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| 47 | |
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| 48 | Iterator& first; |
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| 49 | Iterator const& last; |
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| 50 | Context& context; |
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| 51 | Skipper const& skipper; |
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| 52 | |
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| 53 | private: |
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| 54 | // silence MSVC warning C4512: assignment operator could not be generated |
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| 55 | fail_function& operator= (fail_function const&); |
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| 56 | }; |
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| 57 | }}}} |
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| 58 | |
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| 59 | #endif |
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| 60 | |
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