| 1 | /*============================================================================= |
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| 2 | Copyright (c) 2001-2011 Hartmut Kaiser |
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| 3 | Copyright (c) 2011 Bryce Lelbach |
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| 4 | |
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| 5 | Distributed under the Boost Software License, Version 1.0. (See accompanying |
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| 6 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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| 7 | ==============================================================================*/ |
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| 8 | #if !defined(BOOST_SPIRIT_TEST_QI_BOOL) |
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| 9 | #define BOOST_SPIRIT_TEST_QI_BOOL |
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| 10 | |
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| 11 | #include <boost/spirit/home/x3.hpp> |
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| 12 | #include "test.hpp" |
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| 13 | |
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| 14 | /////////////////////////////////////////////////////////////////////////////// |
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| 15 | struct backwards_bool_policies : boost::spirit::x3::bool_policies<> |
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| 16 | { |
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| 17 | // we want to interpret a 'true' spelled backwards as 'false' |
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| 18 | template <typename Iterator, typename Attribute, typename CaseCompare> |
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| 19 | static bool |
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| 20 | parse_false(Iterator& first, Iterator const& last, Attribute& attr, CaseCompare const& case_compare) |
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| 21 | { |
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| 22 | namespace spirit = boost::spirit; |
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| 23 | namespace x3 = boost::spirit::x3; |
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| 24 | if (x3::detail::string_parse("eurt" , first, last, x3::unused, case_compare)) |
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| 25 | { |
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| 26 | x3::traits::move_to(false, attr); // result is false |
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| 27 | return true; |
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| 28 | } |
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| 29 | return false; |
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| 30 | } |
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| 31 | }; |
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| 32 | |
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| 33 | /////////////////////////////////////////////////////////////////////////////// |
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| 34 | struct test_bool_type |
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| 35 | { |
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| 36 | test_bool_type(bool b = false) : b(b) {} // provide conversion |
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| 37 | bool b; |
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| 38 | }; |
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| 39 | |
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| 40 | #endif |
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| 41 | |
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