133 lines
5.6 KiB
C++
133 lines
5.6 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2014 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(BOOST_SPIRIT_X3_CHAR_CLASS_APRIL_16_2006_1051AM)
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#define BOOST_SPIRIT_X3_CHAR_CLASS_APRIL_16_2006_1051AM
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#include <boost/spirit/home/x3/char/char_parser.hpp>
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#include <boost/spirit/home/x3/char/detail/cast_char.hpp>
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#include <boost/spirit/home/support/char_encoding/standard.hpp>
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#include <boost/spirit/home/support/char_encoding/standard_wide.hpp>
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#include <boost/spirit/home/support/char_encoding/ascii.hpp>
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#include <boost/spirit/home/support/char_encoding/iso8859_1.hpp>
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#include <boost/spirit/home/x3/char/char_class_tags.hpp>
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namespace boost { namespace spirit { namespace x3
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{
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///////////////////////////////////////////////////////////////////////////
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template <typename Encoding>
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struct char_class_base
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{
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typedef typename Encoding::classify_type char_type;
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#define BOOST_SPIRIT_X3_CLASSIFY(name) \
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template <typename Char> \
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static bool \
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is(name##_tag, Char ch) \
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{ \
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return Encoding::is##name \
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BOOST_PREVENT_MACRO_SUBSTITUTION \
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(detail::cast_char<char_type>(ch)); \
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} \
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/***/
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BOOST_SPIRIT_X3_CLASSIFY(char)
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BOOST_SPIRIT_X3_CLASSIFY(alnum)
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BOOST_SPIRIT_X3_CLASSIFY(alpha)
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BOOST_SPIRIT_X3_CLASSIFY(digit)
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BOOST_SPIRIT_X3_CLASSIFY(xdigit)
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BOOST_SPIRIT_X3_CLASSIFY(cntrl)
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BOOST_SPIRIT_X3_CLASSIFY(graph)
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BOOST_SPIRIT_X3_CLASSIFY(lower)
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BOOST_SPIRIT_X3_CLASSIFY(print)
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BOOST_SPIRIT_X3_CLASSIFY(punct)
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BOOST_SPIRIT_X3_CLASSIFY(space)
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BOOST_SPIRIT_X3_CLASSIFY(blank)
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BOOST_SPIRIT_X3_CLASSIFY(upper)
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#undef BOOST_SPIRIT_X3_CLASSIFY
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};
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template <typename Encoding, typename Tag>
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struct char_class
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: char_parser<char_class<Encoding, Tag>>
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{
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typedef Encoding encoding;
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typedef Tag tag;
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typedef typename Encoding::char_type char_type;
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typedef char_type attribute_type;
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static bool const has_attribute = true;
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template <typename Char, typename Context>
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bool test(Char ch, Context const& context) const
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{
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return encoding::ischar(ch)
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&& char_class_base<Encoding>::is(
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get_case_compare<Encoding>(context).get_char_class_tag(tag()), ch);
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}
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};
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#define BOOST_SPIRIT_X3_CHAR_CLASS(encoding, name) \
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typedef char_class<char_encoding::encoding, name##_tag> name##_type; \
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constexpr name##_type name = name##_type(); \
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/***/
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#define BOOST_SPIRIT_X3_CHAR_CLASSES(encoding) \
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namespace encoding \
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{ \
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BOOST_SPIRIT_X3_CHAR_CLASS(encoding, alnum) \
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BOOST_SPIRIT_X3_CHAR_CLASS(encoding, alpha) \
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BOOST_SPIRIT_X3_CHAR_CLASS(encoding, digit) \
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BOOST_SPIRIT_X3_CHAR_CLASS(encoding, xdigit) \
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BOOST_SPIRIT_X3_CHAR_CLASS(encoding, cntrl) \
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BOOST_SPIRIT_X3_CHAR_CLASS(encoding, graph) \
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BOOST_SPIRIT_X3_CHAR_CLASS(encoding, lower) \
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BOOST_SPIRIT_X3_CHAR_CLASS(encoding, print) \
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BOOST_SPIRIT_X3_CHAR_CLASS(encoding, punct) \
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BOOST_SPIRIT_X3_CHAR_CLASS(encoding, space) \
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BOOST_SPIRIT_X3_CHAR_CLASS(encoding, blank) \
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BOOST_SPIRIT_X3_CHAR_CLASS(encoding, upper) \
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} \
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/***/
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BOOST_SPIRIT_X3_CHAR_CLASSES(standard)
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#ifndef BOOST_SPIRIT_NO_STANDARD_WIDE
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BOOST_SPIRIT_X3_CHAR_CLASSES(standard_wide)
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#endif
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BOOST_SPIRIT_X3_CHAR_CLASSES(ascii)
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BOOST_SPIRIT_X3_CHAR_CLASSES(iso8859_1)
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#undef BOOST_SPIRIT_X3_CHAR_CLASS
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#undef BOOST_SPIRIT_X3_CHAR_CLASSES
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using standard::alnum_type;
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using standard::alpha_type;
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using standard::digit_type;
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using standard::xdigit_type;
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using standard::cntrl_type;
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using standard::graph_type;
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using standard::lower_type;
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using standard::print_type;
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using standard::punct_type;
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using standard::space_type;
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using standard::blank_type;
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using standard::upper_type;
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using standard::alnum;
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using standard::alpha;
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using standard::digit;
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using standard::xdigit;
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using standard::cntrl;
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using standard::graph;
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using standard::lower;
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using standard::print;
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using standard::punct;
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using standard::space;
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using standard::blank;
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using standard::upper;
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}}}
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#endif
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