82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2011 Hartmut Kaiser
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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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#ifndef BOOST_SPIRIT_QI_NUMERIC_BOOL_POLICIES_HPP
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#define BOOST_SPIRIT_QI_NUMERIC_BOOL_POLICIES_HPP
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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/detail/string_parse.hpp>
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#include <boost/spirit/home/qi/detail/assign_to.hpp>
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namespace boost { namespace spirit { namespace qi
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{
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///////////////////////////////////////////////////////////////////////////
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// Default boolean policies
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///////////////////////////////////////////////////////////////////////////
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template <typename T = bool>
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struct bool_policies
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{
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template <typename Iterator, typename Attribute>
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static bool
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parse_true(Iterator& first, Iterator const& last, Attribute& attr_)
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{
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if (detail::string_parse("true", first, last, unused))
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{
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spirit::traits::assign_to(T(true), attr_); // result is true
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return true;
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}
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return false;
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}
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template <typename Iterator, typename Attribute>
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static bool
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parse_false(Iterator& first, Iterator const& last, Attribute& attr_)
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{
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if (detail::string_parse("false", first, last, unused))
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{
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spirit::traits::assign_to(T(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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template <typename T = bool>
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struct no_case_bool_policies
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{
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template <typename Iterator, typename Attribute>
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static bool
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parse_true(Iterator& first, Iterator const& last, Attribute& attr_)
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{
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if (detail::string_parse("true", "TRUE", first, last, unused))
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{
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spirit::traits::assign_to(T(true), attr_); // result is true
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return true;
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}
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return false;
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}
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template <typename Iterator, typename Attribute>
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static bool
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parse_false(Iterator& first, Iterator const& last, Attribute& attr_)
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{
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if (detail::string_parse("false", "FALSE", first, last, unused))
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{
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spirit::traits::assign_to(T(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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#endif
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