| // Copyright (c) 2001-2010 Hartmut Kaiser |
| // |
| // 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_KARMA_INT_FEB_23_2007_0840PM) |
| #define BOOST_SPIRIT_KARMA_INT_FEB_23_2007_0840PM |
| |
| #if defined(_MSC_VER) |
| #pragma once |
| #endif |
| |
| #include <limits> |
| |
| #include <boost/spirit/home/support/common_terminals.hpp> |
| #include <boost/spirit/home/support/string_traits.hpp> |
| #include <boost/spirit/home/support/info.hpp> |
| #include <boost/spirit/home/support/char_class.hpp> |
| #include <boost/spirit/home/support/container.hpp> |
| #include <boost/spirit/home/support/detail/get_encoding.hpp> |
| #include <boost/spirit/home/karma/meta_compiler.hpp> |
| #include <boost/spirit/home/karma/delimit_out.hpp> |
| #include <boost/spirit/home/karma/auxiliary/lazy.hpp> |
| #include <boost/spirit/home/karma/detail/get_casetag.hpp> |
| #include <boost/spirit/home/karma/detail/extract_from.hpp> |
| #include <boost/spirit/home/karma/domain.hpp> |
| #include <boost/spirit/home/karma/numeric/detail/numeric_utils.hpp> |
| #include <boost/fusion/include/at.hpp> |
| #include <boost/fusion/include/value_at.hpp> |
| #include <boost/fusion/include/vector.hpp> |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| namespace boost { namespace spirit |
| { |
| namespace tag |
| { |
| template <typename T, unsigned Radix, bool force_sign> |
| struct int_tag {}; |
| } |
| |
| namespace karma |
| { |
| /////////////////////////////////////////////////////////////////////// |
| // This one is the class that the user can instantiate directly in |
| // order to create a customized int generator |
| template <typename T = int, unsigned Radix = 10, bool force_sign = false> |
| struct int_generator |
| : spirit::terminal<tag::int_tag<T, Radix, force_sign> > |
| {}; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // Enablers |
| /////////////////////////////////////////////////////////////////////////// |
| template <> |
| struct use_terminal<karma::domain, tag::short_> // enables short_ |
| : mpl::true_ {}; |
| |
| template <> |
| struct use_terminal<karma::domain, tag::int_> // enables int_ |
| : mpl::true_ {}; |
| |
| template <> |
| struct use_terminal<karma::domain, tag::long_> // enables long_ |
| : mpl::true_ {}; |
| |
| #ifdef BOOST_HAS_LONG_LONG |
| template <> |
| struct use_terminal<karma::domain, tag::long_long> // enables long_long |
| : mpl::true_ {}; |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////// |
| template <> |
| struct use_terminal<karma::domain, short> // enables lit(short(0)) |
| : mpl::true_ {}; |
| |
| template <> |
| struct use_terminal<karma::domain, int> // enables lit(0) |
| : mpl::true_ {}; |
| |
| template <> |
| struct use_terminal<karma::domain, long> // enables lit(0L) |
| : mpl::true_ {}; |
| |
| #ifdef BOOST_HAS_LONG_LONG |
| template <> |
| struct use_terminal<karma::domain, boost::long_long_type> // enables lit(0LL) |
| : mpl::true_ {}; |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////// |
| template <typename A0> |
| struct use_terminal<karma::domain // enables short_(...) |
| , terminal_ex<tag::short_, fusion::vector1<A0> > |
| > : mpl::true_ {}; |
| |
| template <typename A0> |
| struct use_terminal<karma::domain // enables int_(...) |
| , terminal_ex<tag::int_, fusion::vector1<A0> > |
| > : mpl::true_ {}; |
| |
| template <typename A0> |
| struct use_terminal<karma::domain // enables long_(...) |
| , terminal_ex<tag::long_, fusion::vector1<A0> > |
| > : mpl::true_ {}; |
| |
| #ifdef BOOST_HAS_LONG_LONG |
| template <typename A0> |
| struct use_terminal<karma::domain // enables long_long(...) |
| , terminal_ex<tag::long_long, fusion::vector1<A0> > |
| > : mpl::true_ {}; |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////// |
| template <> // enables *lazy* short_(...) |
| struct use_lazy_terminal<karma::domain, tag::short_, 1> |
| : mpl::true_ {}; |
| |
| template <> // enables *lazy* int_(...) |
| struct use_lazy_terminal<karma::domain, tag::int_, 1> |
| : mpl::true_ {}; |
| |
| template <> // enables *lazy* long_(...) |
| struct use_lazy_terminal<karma::domain, tag::long_, 1> |
| : mpl::true_ {}; |
| |
| #ifdef BOOST_HAS_LONG_LONG |
| template <> // enables *lazy* long_long(...) |
| struct use_lazy_terminal<karma::domain, tag::long_long, 1> |
| : mpl::true_ {}; |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // enables any custom int_generator |
| template <typename T, unsigned Radix, bool force_sign> |
| struct use_terminal<karma::domain, tag::int_tag<T, Radix, force_sign> > |
| : mpl::true_ {}; |
| |
| // enables any custom int_generator(...) |
| template <typename T, unsigned Radix, bool force_sign, typename A0> |
| struct use_terminal<karma::domain |
| , terminal_ex<tag::int_tag<T, Radix, force_sign>, fusion::vector1<A0> > |
| > : mpl::true_ {}; |
| |
| // enables *lazy* custom int_generator |
| template <typename T, unsigned Radix, bool force_sign> |
| struct use_lazy_terminal< |
| karma::domain |
| , tag::int_tag<T, Radix, force_sign> |
| , 1 // arity |
| > : mpl::true_ {}; |
| |
| }} |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| namespace boost { namespace spirit { namespace karma |
| { |
| 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 |
| |
| using spirit::lit; // lit(1) is equivalent to 1 |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // This specialization is used for int generators not having a direct |
| // initializer: int_, long_ etc. These generators must be used in |
| // conjunction with an Attribute. |
| /////////////////////////////////////////////////////////////////////////// |
| template < |
| typename T, typename CharEncoding, typename Tag, unsigned Radix |
| , bool force_sign> |
| struct any_int_generator |
| : primitive_generator<any_int_generator<T, CharEncoding, Tag, Radix |
| , force_sign> > |
| { |
| private: |
| template <typename OutputIterator, typename Attribute> |
| static bool insert_int(OutputIterator& sink, Attribute const& attr) |
| { |
| return sign_inserter::call(sink, detail::is_zero(attr) |
| , detail::is_negative(attr), force_sign) && |
| int_inserter<Radix, CharEncoding, Tag>::call(sink |
| , detail::absolute_value(attr)); |
| } |
| |
| public: |
| template <typename Context, typename Unused> |
| struct attribute |
| { |
| typedef T type; |
| }; |
| |
| // check template Attribute 'Radix' for validity |
| BOOST_SPIRIT_ASSERT_MSG( |
| Radix == 2 || Radix == 8 || Radix == 10 || Radix == 16, |
| not_supported_radix, ()); |
| |
| BOOST_SPIRIT_ASSERT_MSG(std::numeric_limits<T>::is_signed, |
| signed_unsigned_mismatch, ()); |
| |
| // int has a Attribute attached |
| template <typename OutputIterator, typename Context, typename Delimiter |
| , typename Attribute> |
| static bool |
| generate(OutputIterator& sink, Context& context, Delimiter const& d |
| , Attribute const& attr) |
| { |
| if (!traits::has_optional_value(attr)) |
| return false; // fail if it's an uninitialized optional |
| |
| return insert_int(sink, traits::extract_from<T>(attr, context)) && |
| delimit_out(sink, d); // always do post-delimiting |
| } |
| |
| // this int has no Attribute attached, it needs to have been |
| // initialized from a direct literal |
| template <typename OutputIterator, typename Context, typename Delimiter> |
| static bool |
| generate(OutputIterator&, Context&, Delimiter const&, unused_type) |
| { |
| // It is not possible (doesn't make sense) to use numeric generators |
| // without providing any attribute, as the generator doesn't 'know' |
| // what to output. The following assertion fires if this situation |
| // is detected in your code. |
| BOOST_SPIRIT_ASSERT_MSG(false, int_not_usable_without_attribute, ()); |
| return false; |
| } |
| |
| template <typename Context> |
| static info what(Context const& /*context*/) |
| { |
| return info("integer"); |
| } |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // This specialization is used for int generators having a direct |
| // initializer: int_(10), long_(20) etc. |
| /////////////////////////////////////////////////////////////////////////// |
| template < |
| typename T, typename CharEncoding, typename Tag, unsigned Radix |
| , bool force_sign, bool no_attribute> |
| struct literal_int_generator |
| : primitive_generator<literal_int_generator<T, CharEncoding, Tag, Radix |
| , force_sign, no_attribute> > |
| { |
| private: |
| template <typename OutputIterator, typename Attribute> |
| static bool insert_int(OutputIterator& sink, Attribute const& attr) |
| { |
| return sign_inserter::call(sink, detail::is_zero(attr) |
| , detail::is_negative(attr), force_sign) && |
| int_inserter<Radix, CharEncoding, Tag>::call(sink |
| , detail::absolute_value(attr)); |
| } |
| |
| public: |
| template <typename Context, typename Unused = unused_type> |
| struct attribute |
| : mpl::if_c<no_attribute, unused_type, T> |
| {}; |
| |
| literal_int_generator(typename add_const<T>::type n) |
| : n_(n) {} |
| |
| // check template Attribute 'Radix' for validity |
| BOOST_SPIRIT_ASSERT_MSG( |
| Radix == 2 || Radix == 8 || Radix == 10 || Radix == 16, |
| not_supported_radix, ()); |
| |
| BOOST_SPIRIT_ASSERT_MSG(std::numeric_limits<T>::is_signed, |
| signed_unsigned_mismatch, ()); |
| |
| // A int_(1) which additionally has an associated attribute emits |
| // its immediate literal only if it matches the attribute, otherwise |
| // it fails. |
| template <typename OutputIterator, typename Context, typename Delimiter |
| , typename Attribute> |
| bool generate(OutputIterator& sink, Context& context |
| , Delimiter const& d, Attribute const& attr) const |
| { |
| typedef typename attribute<Context>::type attribute_type; |
| if (!traits::has_optional_value(attr) || |
| n_ != traits::extract_from<attribute_type>(attr, context)) |
| { |
| return false; |
| } |
| return insert_int(sink, n_) && delimit_out(sink, d); |
| } |
| |
| // A int_(1) without any associated attribute just emits its |
| // immediate literal |
| template <typename OutputIterator, typename Context, typename Delimiter> |
| bool generate(OutputIterator& sink, Context&, Delimiter const& d |
| , unused_type) const |
| { |
| return insert_int(sink, n_) && delimit_out(sink, d); |
| } |
| |
| template <typename Context> |
| static info what(Context const& /*context*/) |
| { |
| return info("integer"); |
| } |
| |
| T n_; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| // Generator generators: make_xxx function (objects) |
| /////////////////////////////////////////////////////////////////////////// |
| namespace detail |
| { |
| template <typename T, typename Modifiers, unsigned Radix = 10 |
| , bool force_sign = false> |
| struct make_int |
| { |
| static bool const lower = |
| has_modifier<Modifiers, tag::char_code_base<tag::lower> >::value; |
| static bool const upper = |
| has_modifier<Modifiers, tag::char_code_base<tag::upper> >::value; |
| |
| typedef any_int_generator< |
| T |
| , typename spirit::detail::get_encoding_with_case< |
| Modifiers, unused_type, lower || upper>::type |
| , typename detail::get_casetag<Modifiers, lower || upper>::type |
| , Radix |
| , force_sign |
| > result_type; |
| |
| result_type operator()(unused_type, unused_type) const |
| { |
| return result_type(); |
| } |
| }; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////// |
| template <typename Modifiers> |
| struct make_primitive<tag::short_, Modifiers> |
| : detail::make_int<short, Modifiers> {}; |
| |
| template <typename Modifiers> |
| struct make_primitive<tag::int_, Modifiers> |
| : detail::make_int<int, Modifiers> {}; |
| |
| template <typename Modifiers> |
| struct make_primitive<tag::long_, Modifiers> |
| : detail::make_int<long, Modifiers> {}; |
| |
| #ifdef BOOST_HAS_LONG_LONG |
| template <typename Modifiers> |
| struct make_primitive<tag::long_long, Modifiers> |
| : detail::make_int<boost::long_long_type, Modifiers> {}; |
| #endif |
| |
| template <typename T, unsigned Radix, bool force_sign, typename Modifiers> |
| struct make_primitive<tag::int_tag<T, Radix, force_sign>, Modifiers> |
| : detail::make_int<T, Modifiers, Radix, force_sign> {}; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| namespace detail |
| { |
| template <typename T, typename Modifiers, unsigned Radix = 10 |
| , bool force_sign = false> |
| struct make_int_direct |
| { |
| static bool const lower = |
| has_modifier<Modifiers, tag::char_code_base<tag::lower> >::value; |
| static bool const upper = |
| has_modifier<Modifiers, tag::char_code_base<tag::upper> >::value; |
| |
| typedef literal_int_generator< |
| T |
| , typename spirit::detail::get_encoding_with_case< |
| Modifiers, unused_type, lower || upper>::type |
| , typename detail::get_casetag<Modifiers, lower || upper>::type |
| , Radix, force_sign, false |
| > result_type; |
| |
| template <typename Terminal> |
| result_type operator()(Terminal const& term, unused_type) const |
| { |
| return result_type(fusion::at_c<0>(term.args)); |
| } |
| }; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////// |
| template <typename Modifiers, typename A0> |
| struct make_primitive< |
| terminal_ex<tag::short_, fusion::vector1<A0> >, Modifiers> |
| : detail::make_int_direct<short, Modifiers> {}; |
| |
| template <typename Modifiers, typename A0> |
| struct make_primitive< |
| terminal_ex<tag::int_, fusion::vector1<A0> >, Modifiers> |
| : detail::make_int_direct<int, Modifiers> {}; |
| |
| template <typename Modifiers, typename A0> |
| struct make_primitive< |
| terminal_ex<tag::long_, fusion::vector1<A0> >, Modifiers> |
| : detail::make_int_direct<long, Modifiers> {}; |
| |
| #ifdef BOOST_HAS_LONG_LONG |
| template <typename Modifiers, typename A0> |
| struct make_primitive< |
| terminal_ex<tag::long_long, fusion::vector1<A0> >, Modifiers> |
| : detail::make_int_direct<boost::long_long_type, Modifiers> {}; |
| #endif |
| |
| template <typename T, unsigned Radix, bool force_sign, typename A0 |
| , typename Modifiers> |
| struct make_primitive< |
| terminal_ex<tag::int_tag<T, Radix, force_sign>, fusion::vector1<A0> > |
| , Modifiers> |
| : detail::make_int_direct<T, Modifiers, Radix, force_sign> {}; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| namespace detail |
| { |
| template <typename T, typename Modifiers> |
| struct basic_int_literal |
| { |
| static bool const lower = |
| has_modifier<Modifiers, tag::char_code_base<tag::lower> >::value; |
| static bool const upper = |
| has_modifier<Modifiers, tag::char_code_base<tag::upper> >::value; |
| |
| typedef literal_int_generator< |
| T |
| , typename spirit::detail::get_encoding_with_case< |
| Modifiers, unused_type, lower || upper>::type |
| , typename detail::get_casetag<Modifiers, lower || upper>::type |
| , 10, false, true |
| > result_type; |
| |
| template <typename T_> |
| result_type operator()(T_ i, unused_type) const |
| { |
| return result_type(i); |
| } |
| }; |
| } |
| |
| template <typename Modifiers> |
| struct make_primitive<short, Modifiers> |
| : detail::basic_int_literal<int, Modifiers> {}; |
| |
| template <typename Modifiers> |
| struct make_primitive<int, Modifiers> |
| : detail::basic_int_literal<int, Modifiers> {}; |
| |
| template <typename Modifiers> |
| struct make_primitive<long, Modifiers> |
| : detail::basic_int_literal<long, Modifiers> {}; |
| |
| #ifdef BOOST_HAS_LONG_LONG |
| template <typename Modifiers> |
| struct make_primitive<boost::long_long_type, Modifiers> |
| : detail::basic_int_literal<boost::long_long_type, Modifiers> {}; |
| #endif |
| |
| }}} |
| |
| #endif |