| /*============================================================================= |
| Copyright (c) 2001-2010 Joel de Guzman |
| |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| ==============================================================================*/ |
| #if !defined(BOOST_SPIRIT_INT_APR_17_2006_0830AM) |
| #define BOOST_SPIRIT_INT_APR_17_2006_0830AM |
| |
| #if defined(_MSC_VER) |
| #pragma once |
| #endif |
| |
| #include <boost/spirit/home/qi/skip_over.hpp> |
| #include <boost/spirit/home/qi/numeric/numeric_utils.hpp> |
| #include <boost/spirit/home/qi/meta_compiler.hpp> |
| #include <boost/spirit/home/qi/parser.hpp> |
| #include <boost/spirit/home/support/common_terminals.hpp> |
| #include <boost/spirit/home/support/info.hpp> |
| #include <boost/mpl/assert.hpp> |
| |
| namespace boost { namespace spirit |
| { |
| /////////////////////////////////////////////////////////////////////////// |
| // Enablers |
| /////////////////////////////////////////////////////////////////////////// |
| //[primitive_parsers_enable_short_ |
| template <> |
| struct use_terminal<qi::domain, tag::short_> // enables short_ |
| : mpl::true_ {}; |
| //] |
| |
| //[primitive_parsers_enable_int_ |
| template <> |
| struct use_terminal<qi::domain, tag::int_> // enables int_ |
| : mpl::true_ {}; |
| //] |
| |
| //[primitive_parsers_enable_long_ |
| template <> |
| struct use_terminal<qi::domain, tag::long_> // enables long_ |
| : mpl::true_ {}; |
| //] |
| |
| #ifdef BOOST_HAS_LONG_LONG |
| //[primitive_parsers_enable_long_long_ |
| template <> |
| struct use_terminal<qi::domain, tag::long_long> // enables long_long |
| : mpl::true_ {}; |
| //] |
| #endif |
| }} |
| |
| namespace boost { namespace spirit { namespace qi |
| { |
| using spirit::short_; |
| using spirit::short__type; |
| using spirit::int_; |
| using spirit::int__type; |
| using spirit::long_; |
| using spirit::long__type; |
| #ifdef BOOST_HAS_LONG_LONG |
| using spirit::long_long; |
| using spirit::long_long_type; |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // This is the actual int parser |
| /////////////////////////////////////////////////////////////////////////// |
| //[primitive_parsers_int |
| template < |
| typename T |
| , unsigned Radix = 10 |
| , unsigned MinDigits = 1 |
| , int MaxDigits = -1> |
| struct int_parser_impl |
| : primitive_parser<int_parser_impl<T, Radix, MinDigits, MaxDigits> > |
| { |
| // check template parameter 'Radix' for validity |
| BOOST_SPIRIT_ASSERT_MSG( |
| Radix == 2 || Radix == 8 || Radix == 10 || Radix == 16, |
| not_supported_radix, ()); |
| |
| template <typename Context, typename Iterator> |
| struct attribute |
| { |
| typedef T type; |
| }; |
| |
| template <typename Iterator, typename Context |
| , typename Skipper, typename Attribute> |
| bool parse(Iterator& first, Iterator const& last |
| , Context& /*context*/, Skipper const& skipper |
| , Attribute& attr) const |
| { |
| qi::skip_over(first, last, skipper); |
| return extract_int<T, Radix, MinDigits, MaxDigits> |
| ::call(first, last, attr); |
| } |
| |
| template <typename Context> |
| info what(Context& /*context*/) const |
| { |
| return info("integer"); |
| } |
| }; |
| //] |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // This one is the class that the user can instantiate directly |
| /////////////////////////////////////////////////////////////////////////// |
| template < |
| typename T |
| , unsigned Radix = 10 |
| , unsigned MinDigits = 1 |
| , int MaxDigits = -1> |
| struct int_parser |
| : proto::terminal<int_parser_impl<T, Radix, MinDigits, MaxDigits> >::type |
| { |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // Parser generators: make_xxx function (objects) |
| /////////////////////////////////////////////////////////////////////////// |
| //[primitive_parsers_make_int |
| template <typename T> |
| struct make_int |
| { |
| typedef int_parser_impl<T> result_type; |
| result_type operator()(unused_type, unused_type) const |
| { |
| return result_type(); |
| } |
| }; |
| //] |
| |
| //[primitive_parsers_short_ |
| template <typename Modifiers> |
| struct make_primitive<tag::short_, Modifiers> : make_int<short> {}; |
| //] |
| |
| //[primitive_parsers_int_ |
| template <typename Modifiers> |
| struct make_primitive<tag::int_, Modifiers> : make_int<int> {}; |
| //] |
| |
| //[primitive_parsers_long_ |
| template <typename Modifiers> |
| struct make_primitive<tag::long_, Modifiers> : make_int<long> {}; |
| //] |
| |
| #ifdef BOOST_HAS_LONG_LONG |
| //[primitive_parsers_long_long_ |
| template <typename Modifiers> |
| struct make_primitive<tag::long_long, Modifiers> |
| : make_int<boost::long_long_type> {}; |
| //] |
| #endif |
| |
| }}} |
| |
| #endif |