465 lines
16 KiB
C++
465 lines
16 KiB
C++
/*=============================================================================
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Copyright (c) 2001-2011 Joel de Guzman
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Copyright (c) 2011 Bryce Lelbach
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Copyright (c) 2011 Jan Frederick Eick
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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_UINT_HPP
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#define BOOST_SPIRIT_QI_NUMERIC_UINT_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/skip_over.hpp>
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#include <boost/spirit/home/qi/detail/enable_lit.hpp>
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#include <boost/spirit/home/qi/numeric/numeric_utils.hpp>
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#include <boost/spirit/home/qi/meta_compiler.hpp>
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#include <boost/spirit/home/qi/parser.hpp>
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#include <boost/spirit/home/support/common_terminals.hpp>
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#include <boost/spirit/home/support/info.hpp>
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#include <boost/spirit/home/support/detail/is_spirit_tag.hpp>
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#include <boost/mpl/assert.hpp>
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#include <boost/type_traits/is_same.hpp>
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namespace boost { namespace spirit
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{
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namespace tag
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{
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template <typename T, unsigned Radix, unsigned MinDigits
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, int MaxDigits>
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struct uint_parser
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{
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BOOST_SPIRIT_IS_TAG()
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};
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}
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namespace qi
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{
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///////////////////////////////////////////////////////////////////////
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// This one is the class that the user can instantiate directly in
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// order to create a customized int parser
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template <typename T = int, unsigned Radix = 10, unsigned MinDigits = 1
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, int MaxDigits = -1>
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struct uint_parser
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: spirit::terminal<tag::uint_parser<T, Radix, MinDigits, MaxDigits> >
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{};
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}
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///////////////////////////////////////////////////////////////////////////
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// Enablers
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///////////////////////////////////////////////////////////////////////////
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template <> // enables ushort_
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struct use_terminal<qi::domain, tag::ushort_> : mpl::true_ {};
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template <typename A0> // enables lit(n)
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struct use_terminal<qi::domain
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, terminal_ex<tag::lit, fusion::vector1<A0> >
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, typename enable_if<is_same<A0, unsigned short> >::type>
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: mpl::true_ {};
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template <typename A0> // enables ushort_(n)
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struct use_terminal<qi::domain
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, terminal_ex<tag::ushort_, fusion::vector1<A0> > >
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: is_arithmetic<A0> {};
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template <> // enables *lazy* ushort_(n)
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struct use_lazy_terminal<qi::domain, tag::ushort_, 1> : mpl::true_ {};
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///////////////////////////////////////////////////////////////////////////
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template <> // enables uint_
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struct use_terminal<qi::domain, tag::uint_> : mpl::true_ {};
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template <typename A0> // enables lit(n)
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struct use_terminal<qi::domain
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, terminal_ex<tag::lit, fusion::vector1<A0> >
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, typename enable_if<is_same<A0, unsigned> >::type>
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: mpl::true_ {};
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template <typename A0> // enables uint_(n)
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struct use_terminal<qi::domain
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, terminal_ex<tag::uint_, fusion::vector1<A0> > >
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: is_arithmetic<A0> {};
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template <> // enables *lazy* uint_(n)
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struct use_lazy_terminal<qi::domain, tag::uint_, 1> : mpl::true_ {};
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///////////////////////////////////////////////////////////////////////////
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template <> // enables ulong_
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struct use_terminal<qi::domain, tag::ulong_> : mpl::true_ {};
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template <typename A0> // enables lit(n)
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struct use_terminal<qi::domain
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, terminal_ex<tag::lit, fusion::vector1<A0> >
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, typename enable_if<is_same<A0, unsigned long> >::type>
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: mpl::true_ {};
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template <typename A0> // enables ulong_(n)
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struct use_terminal<qi::domain
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, terminal_ex<tag::ulong_, fusion::vector1<A0> > >
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: is_arithmetic<A0> {};
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template <> // enables *lazy* ulong_(n)
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struct use_lazy_terminal<qi::domain, tag::ulong_, 1> : mpl::true_ {};
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///////////////////////////////////////////////////////////////////////////
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#ifdef BOOST_HAS_LONG_LONG
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template <> // enables ulong_long
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struct use_terminal<qi::domain, tag::ulong_long> : mpl::true_ {};
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template <typename A0> // enables lit(n)
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struct use_terminal<qi::domain
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, terminal_ex<tag::lit, fusion::vector1<A0> >
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, typename enable_if<is_same<A0, boost::ulong_long_type> >::type>
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: mpl::true_ {};
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template <typename A0> // enables ulong_long(n)
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struct use_terminal<qi::domain
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, terminal_ex<tag::ulong_long, fusion::vector1<A0> > >
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: is_arithmetic<A0> {};
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template <> // enables *lazy* ulong_long(n)
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struct use_lazy_terminal<qi::domain, tag::ulong_long, 1> : mpl::true_ {};
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#endif
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///////////////////////////////////////////////////////////////////////////
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template <> // enables bin
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struct use_terminal<qi::domain, tag::bin> : mpl::true_ {};
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template <typename A0> // enables bin(n)
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struct use_terminal<qi::domain
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, terminal_ex<tag::bin, fusion::vector1<A0> > >
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: is_arithmetic<A0> {};
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template <> // enables *lazy* bin(n)
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struct use_lazy_terminal<qi::domain, tag::bin, 1> : mpl::true_ {};
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///////////////////////////////////////////////////////////////////////////
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template <> // enables oct
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struct use_terminal<qi::domain, tag::oct> : mpl::true_ {};
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template <typename A0> // enables oct(n)
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struct use_terminal<qi::domain
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, terminal_ex<tag::oct, fusion::vector1<A0> > >
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: is_arithmetic<A0> {};
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template <> // enables *lazy* oct(n)
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struct use_lazy_terminal<qi::domain, tag::oct, 1> : mpl::true_ {};
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///////////////////////////////////////////////////////////////////////////
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template <> // enables hex
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struct use_terminal<qi::domain, tag::hex> : mpl::true_ {};
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template <typename A0> // enables hex(n)
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struct use_terminal<qi::domain
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, terminal_ex<tag::hex, fusion::vector1<A0> > >
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: is_arithmetic<A0> {};
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template <> // enables *lazy* hex(n)
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struct use_lazy_terminal<qi::domain, tag::hex, 1> : mpl::true_ {};
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///////////////////////////////////////////////////////////////////////////
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// enables any custom uint_parser
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template <typename T, unsigned Radix, unsigned MinDigits
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, int MaxDigits>
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struct use_terminal<qi::domain
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, tag::uint_parser<T, Radix, MinDigits, MaxDigits> >
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: mpl::true_ {};
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// enables any custom uint_parser(n)
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template <typename T, unsigned Radix, unsigned MinDigits
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, int MaxDigits, typename A0>
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struct use_terminal<qi::domain
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, terminal_ex<tag::uint_parser<T, Radix, MinDigits, MaxDigits>
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, fusion::vector1<A0> >
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> : mpl::true_ {};
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// enables *lazy* custom uint_parser(n)
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template <typename T, unsigned Radix, unsigned MinDigits
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, int MaxDigits>
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struct use_lazy_terminal<qi::domain
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, tag::uint_parser<T, Radix, MinDigits, MaxDigits>, 1
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> : mpl::true_ {};
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}}
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namespace boost { namespace spirit { namespace qi
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{
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#ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS
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using spirit::bin;
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using spirit::oct;
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using spirit::hex;
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using spirit::ushort_;
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using spirit::uint_;
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using spirit::ulong_;
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#ifdef BOOST_HAS_LONG_LONG
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using spirit::ulong_long;
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#endif
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using spirit::lit; // lit(1) is equivalent to 1
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#endif
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using spirit::bin_type;
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using spirit::oct_type;
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using spirit::hex_type;
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using spirit::ushort_type;
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using spirit::uint_type;
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using spirit::ulong_type;
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#ifdef BOOST_HAS_LONG_LONG
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using spirit::ulong_long_type;
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#endif
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using spirit::lit_type;
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///////////////////////////////////////////////////////////////////////////
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// This is the actual uint parser
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///////////////////////////////////////////////////////////////////////////
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template <typename T, unsigned Radix = 10, unsigned MinDigits = 1
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, int MaxDigits = -1>
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struct any_uint_parser
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: primitive_parser<any_uint_parser<T, Radix, MinDigits, MaxDigits> >
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{
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// check template parameter 'Radix' for validity
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BOOST_SPIRIT_ASSERT_MSG(
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Radix >= 2 && Radix <= 36,
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not_supported_radix, ());
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template <typename Context, typename Iterator>
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struct attribute
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{
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typedef T type;
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};
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template <typename Iterator, typename Context
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, typename Skipper, typename Attribute>
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bool parse(Iterator& first, Iterator const& last
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, Context& /*context*/, Skipper const& skipper
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, Attribute& attr_) const
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{
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typedef extract_uint<T, Radix, MinDigits, MaxDigits> extract;
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qi::skip_over(first, last, skipper);
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return extract::call(first, last, attr_);
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}
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template <typename Context>
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info what(Context& /*context*/) const
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{
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return info("unsigned-integer");
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}
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};
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//]
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template <typename T, unsigned Radix = 10, unsigned MinDigits = 1
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, int MaxDigits = -1, bool no_attribute = true>
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struct literal_uint_parser
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: primitive_parser<literal_uint_parser<T, Radix, MinDigits, MaxDigits
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, no_attribute> >
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{
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// check template parameter 'Radix' for validity
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BOOST_SPIRIT_ASSERT_MSG(
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Radix == 2 || Radix == 8 || Radix == 10 || Radix == 16,
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not_supported_radix, ());
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template <typename Value>
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literal_uint_parser(Value const& n) : n_(n) {}
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template <typename Context, typename Iterator>
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struct attribute
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: mpl::if_c<no_attribute, unused_type, T>
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{};
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template <typename Iterator, typename Context
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, typename Skipper, typename Attribute>
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bool parse(Iterator& first, Iterator const& last
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, Context& /*context*/, Skipper const& skipper
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, Attribute& attr_param) const
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{
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typedef extract_uint<T, Radix, MinDigits, MaxDigits> extract;
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qi::skip_over(first, last, skipper);
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Iterator save = first;
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T attr_;
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if (extract::call(first, last, attr_) && (attr_ == n_))
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{
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traits::assign_to(attr_, attr_param);
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return true;
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}
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first = save;
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return false;
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}
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template <typename Context>
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info what(Context& /*context*/) const
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{
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return info("unsigned-integer");
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}
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T n_;
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};
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///////////////////////////////////////////////////////////////////////////
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// Parser generators: make_xxx function (objects)
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///////////////////////////////////////////////////////////////////////////
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template <typename T, unsigned Radix = 10, unsigned MinDigits = 1
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, int MaxDigits = -1>
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struct make_uint
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{
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typedef any_uint_parser<T, Radix, MinDigits, MaxDigits> result_type;
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result_type operator()(unused_type, unused_type) const
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{
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return result_type();
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}
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};
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template <typename T, unsigned Radix = 10, unsigned MinDigits = 1
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, int MaxDigits = -1>
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struct make_direct_uint
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{
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typedef literal_uint_parser<T, Radix, MinDigits, MaxDigits, false>
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result_type;
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template <typename Terminal>
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result_type operator()(Terminal const& term, unused_type) const
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{
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return result_type(fusion::at_c<0>(term.args));
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}
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};
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template <typename T, unsigned Radix = 10, unsigned MinDigits = 1
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, int MaxDigits = -1>
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struct make_literal_uint
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{
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typedef literal_uint_parser<T, Radix, MinDigits, MaxDigits> result_type;
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template <typename Terminal>
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result_type operator()(Terminal const& term, unused_type) const
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{
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return result_type(fusion::at_c<0>(term.args));
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}
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};
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///////////////////////////////////////////////////////////////////////////
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template <typename Modifiers, typename A0>
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struct make_primitive<
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terminal_ex<tag::lit, fusion::vector1<A0> >
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, Modifiers, typename enable_if<is_same<A0, unsigned short> >::type>
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: make_literal_uint<unsigned short> {};
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template <typename Modifiers, typename A0>
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struct make_primitive<
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terminal_ex<tag::lit, fusion::vector1<A0> >
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, Modifiers, typename enable_if<is_same<A0, unsigned> >::type>
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: make_literal_uint<unsigned> {};
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template <typename Modifiers, typename A0>
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struct make_primitive<
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terminal_ex<tag::lit, fusion::vector1<A0> >
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, Modifiers, typename enable_if<is_same<A0, unsigned long> >::type>
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: make_literal_uint<unsigned long> {};
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#ifdef BOOST_HAS_LONG_LONG
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template <typename Modifiers, typename A0>
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struct make_primitive<
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terminal_ex<tag::lit, fusion::vector1<A0> >
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, Modifiers, typename enable_if<is_same<A0, boost::ulong_long_type> >::type>
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: make_literal_uint<boost::ulong_long_type> {};
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#endif
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///////////////////////////////////////////////////////////////////////////
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template <typename T, unsigned Radix, unsigned MinDigits, int MaxDigits
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, typename Modifiers>
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struct make_primitive<
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tag::uint_parser<T, Radix, MinDigits, MaxDigits>
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, Modifiers>
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: make_uint<T, Radix, MinDigits, MaxDigits> {};
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template <typename T, unsigned Radix, unsigned MinDigits, int MaxDigits
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, typename A0, typename Modifiers>
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struct make_primitive<
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terminal_ex<tag::uint_parser<T, Radix, MinDigits, MaxDigits>
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, fusion::vector1<A0> >, Modifiers>
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: make_direct_uint<T, Radix, MinDigits, MaxDigits> {};
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///////////////////////////////////////////////////////////////////////////
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template <typename Modifiers>
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struct make_primitive<tag::bin, Modifiers>
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: make_uint<unsigned, 2> {};
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template <typename Modifiers, typename A0>
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struct make_primitive<
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terminal_ex<tag::bin
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, fusion::vector1<A0> > , Modifiers>
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: make_direct_uint<unsigned, 2> {};
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///////////////////////////////////////////////////////////////////////////
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template <typename Modifiers>
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struct make_primitive<tag::oct, Modifiers>
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: make_uint<unsigned, 8> {};
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template <typename Modifiers, typename A0>
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struct make_primitive<
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terminal_ex<tag::oct
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, fusion::vector1<A0> > , Modifiers>
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: make_direct_uint<unsigned, 8> {};
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///////////////////////////////////////////////////////////////////////////
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template <typename Modifiers>
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struct make_primitive<tag::hex, Modifiers>
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: make_uint<unsigned, 16> {};
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template <typename Modifiers, typename A0>
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struct make_primitive<
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terminal_ex<tag::hex
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, fusion::vector1<A0> > , Modifiers>
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: make_direct_uint<unsigned, 16> {};
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///////////////////////////////////////////////////////////////////////////
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template <typename Modifiers>
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struct make_primitive<tag::ushort_, Modifiers>
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: make_uint<unsigned short> {};
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template <typename Modifiers, typename A0>
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struct make_primitive<
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terminal_ex<tag::ushort_
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, fusion::vector1<A0> > , Modifiers>
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: make_direct_uint<unsigned short> {};
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///////////////////////////////////////////////////////////////////////////
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template <typename Modifiers>
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struct make_primitive<tag::uint_, Modifiers>
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: make_uint<unsigned> {};
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template <typename Modifiers, typename A0>
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struct make_primitive<
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terminal_ex<tag::uint_
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, fusion::vector1<A0> > , Modifiers>
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: make_direct_uint<unsigned> {};
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///////////////////////////////////////////////////////////////////////////
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template <typename Modifiers>
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struct make_primitive<tag::ulong_, Modifiers>
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: make_uint<unsigned long> {};
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template <typename Modifiers, typename A0>
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struct make_primitive<
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terminal_ex<tag::ulong_
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, fusion::vector1<A0> > , Modifiers>
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: make_direct_uint<unsigned long> {};
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///////////////////////////////////////////////////////////////////////////
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#ifdef BOOST_HAS_LONG_LONG
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template <typename Modifiers>
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struct make_primitive<tag::ulong_long, Modifiers>
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: make_uint<boost::ulong_long_type> {};
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template <typename Modifiers, typename A0>
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struct make_primitive<
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terminal_ex<tag::ulong_long
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, fusion::vector1<A0> > , Modifiers>
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: make_direct_uint<boost::ulong_long_type> {};
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#endif
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}}}
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#endif
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