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41 lines
1.4 KiB
C++
41 lines
1.4 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2011 Hartmut Kaiser
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Copyright (c) 2011 Bryce Lelbach
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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_TEST_QI_BOOL)
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#define BOOST_SPIRIT_TEST_QI_BOOL
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#include <boost/spirit/home/x3.hpp>
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#include "test.hpp"
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///////////////////////////////////////////////////////////////////////////////
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struct backwards_bool_policies : boost::spirit::x3::bool_policies<>
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{
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// we want to interpret a 'true' spelled backwards as 'false'
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template <typename Iterator, typename Attribute, typename CaseCompare>
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static bool
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parse_false(Iterator& first, Iterator const& last, Attribute& attr, CaseCompare const& case_compare)
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{
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namespace spirit = boost::spirit;
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namespace x3 = boost::spirit::x3;
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if (x3::detail::string_parse("eurt", first, last, x3::unused, case_compare))
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{
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x3::traits::move_to(false, attr); // result is false
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return true;
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}
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return false;
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}
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};
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///////////////////////////////////////////////////////////////////////////////
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struct test_bool_type
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{
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test_bool_type(bool b = false) : b(b) {} // provide conversion
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bool b;
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};
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#endif
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