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525 lines
19 KiB
525 lines
19 KiB
// Copyright (c) 2001-2011 Hartmut Kaiser |
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// |
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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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#if !defined(BOOST_SPIRIT_KARMA_INT_FEB_23_2007_0840PM) |
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#define BOOST_SPIRIT_KARMA_INT_FEB_23_2007_0840PM |
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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/limits.hpp> |
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#include <boost/config.hpp> |
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#include <boost/mpl/bool.hpp> |
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#include <boost/utility/enable_if.hpp> |
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#include <boost/spirit/home/support/common_terminals.hpp> |
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#include <boost/spirit/home/support/string_traits.hpp> |
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#include <boost/spirit/home/support/numeric_traits.hpp> |
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#include <boost/spirit/home/support/info.hpp> |
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#include <boost/spirit/home/support/char_class.hpp> |
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#include <boost/spirit/home/support/container.hpp> |
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#include <boost/spirit/home/support/detail/get_encoding.hpp> |
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#include <boost/spirit/home/support/detail/is_spirit_tag.hpp> |
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#include <boost/spirit/home/karma/meta_compiler.hpp> |
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#include <boost/spirit/home/karma/delimit_out.hpp> |
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#include <boost/spirit/home/karma/auxiliary/lazy.hpp> |
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#include <boost/spirit/home/karma/detail/get_casetag.hpp> |
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#include <boost/spirit/home/karma/detail/extract_from.hpp> |
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#include <boost/spirit/home/karma/detail/enable_lit.hpp> |
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#include <boost/spirit/home/karma/domain.hpp> |
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#include <boost/spirit/home/karma/numeric/detail/numeric_utils.hpp> |
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#include <boost/fusion/include/at.hpp> |
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#include <boost/fusion/include/value_at.hpp> |
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#include <boost/fusion/include/vector.hpp> |
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/////////////////////////////////////////////////////////////////////////////// |
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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, bool force_sign> |
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struct int_generator |
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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 karma |
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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 generator |
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template <typename T = int, unsigned Radix = 10, bool force_sign = false> |
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struct int_generator |
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: spirit::terminal<tag::int_generator<T, Radix, force_sign> > |
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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 <> |
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struct use_terminal<karma::domain, tag::short_> // enables short_ |
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: mpl::true_ {}; |
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template <> |
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struct use_terminal<karma::domain, tag::int_> // enables int_ |
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: mpl::true_ {}; |
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template <> |
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struct use_terminal<karma::domain, tag::long_> // enables long_ |
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: mpl::true_ {}; |
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#ifdef BOOST_HAS_LONG_LONG |
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template <> |
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struct use_terminal<karma::domain, tag::long_long> // enables long_long |
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: mpl::true_ {}; |
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#endif |
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/////////////////////////////////////////////////////////////////////////// |
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template <> |
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struct use_terminal<karma::domain, short> // enables lit(short(0)) |
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: mpl::true_ {}; |
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template <> |
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struct use_terminal<karma::domain, int> // enables lit(0) |
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: mpl::true_ {}; |
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template <> |
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struct use_terminal<karma::domain, long> // enables lit(0L) |
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: mpl::true_ {}; |
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#ifdef BOOST_HAS_LONG_LONG |
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template <> |
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struct use_terminal<karma::domain, boost::long_long_type> // enables lit(0LL) |
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: mpl::true_ {}; |
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#endif |
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/////////////////////////////////////////////////////////////////////////// |
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template <typename A0> |
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struct use_terminal<karma::domain // enables short_(...) |
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, terminal_ex<tag::short_, fusion::vector1<A0> > |
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> : mpl::true_ {}; |
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template <typename A0> |
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struct use_terminal<karma::domain // enables int_(...) |
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, terminal_ex<tag::int_, fusion::vector1<A0> > |
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> : mpl::true_ {}; |
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template <typename A0> |
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struct use_terminal<karma::domain // enables long_(...) |
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, terminal_ex<tag::long_, fusion::vector1<A0> > |
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> : mpl::true_ {}; |
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#ifdef BOOST_HAS_LONG_LONG |
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template <typename A0> |
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struct use_terminal<karma::domain // enables long_long(...) |
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, terminal_ex<tag::long_long, fusion::vector1<A0> > |
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> : mpl::true_ {}; |
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#endif |
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/////////////////////////////////////////////////////////////////////////// |
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template <> // enables *lazy* short_(...) |
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struct use_lazy_terminal<karma::domain, tag::short_, 1> |
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: mpl::true_ {}; |
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template <> // enables *lazy* int_(...) |
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struct use_lazy_terminal<karma::domain, tag::int_, 1> |
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: mpl::true_ {}; |
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template <> // enables *lazy* long_(...) |
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struct use_lazy_terminal<karma::domain, tag::long_, 1> |
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: mpl::true_ {}; |
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#ifdef BOOST_HAS_LONG_LONG |
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template <> // enables *lazy* long_long(...) |
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struct use_lazy_terminal<karma::domain, tag::long_long, 1> |
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: mpl::true_ {}; |
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#endif |
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/////////////////////////////////////////////////////////////////////////// |
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// enables any custom int_generator |
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template <typename T, unsigned Radix, bool force_sign> |
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struct use_terminal<karma::domain, tag::int_generator<T, Radix, force_sign> > |
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: mpl::true_ {}; |
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// enables any custom int_generator(...) |
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template <typename T, unsigned Radix, bool force_sign, typename A0> |
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struct use_terminal<karma::domain |
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, terminal_ex<tag::int_generator<T, Radix, force_sign> |
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, fusion::vector1<A0> > |
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> : mpl::true_ {}; |
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// enables *lazy* custom int_generator |
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template <typename T, unsigned Radix, bool force_sign> |
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struct use_lazy_terminal< |
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karma::domain |
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, tag::int_generator<T, Radix, force_sign> |
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, 1 // arity |
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> : mpl::true_ {}; |
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// enables lit(int) |
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template <typename A0> |
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struct use_terminal<karma::domain |
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, terminal_ex<tag::lit, fusion::vector1<A0> > |
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, typename enable_if<traits::is_int<A0> >::type> |
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: mpl::true_ {}; |
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}} |
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/////////////////////////////////////////////////////////////////////////////// |
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namespace boost { namespace spirit { namespace karma |
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{ |
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#ifndef BOOST_SPIRIT_NO_PREDEFINED_TERMINALS |
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using spirit::short_; |
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using spirit::int_; |
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using spirit::long_; |
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#ifdef BOOST_HAS_LONG_LONG |
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using spirit::long_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::short_type; |
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using spirit::int_type; |
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using spirit::long_type; |
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#ifdef BOOST_HAS_LONG_LONG |
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using spirit::long_long_type; |
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#endif |
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using spirit::lit_type; |
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/////////////////////////////////////////////////////////////////////////// |
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// This specialization is used for int generators not having a direct |
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// initializer: int_, long_ etc. These generators must be used in |
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// conjunction with an Attribute. |
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/////////////////////////////////////////////////////////////////////////// |
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template < |
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typename T, typename CharEncoding, typename Tag, unsigned Radix |
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, bool force_sign> |
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struct any_int_generator |
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: primitive_generator<any_int_generator<T, CharEncoding, Tag, Radix |
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, force_sign> > |
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{ |
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private: |
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template <typename OutputIterator, typename Attribute> |
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static bool insert_int(OutputIterator& sink, Attribute const& attr) |
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{ |
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return sign_inserter::call(sink, traits::test_zero(attr) |
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, traits::test_negative(attr), force_sign) && |
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int_inserter<Radix, CharEncoding, Tag>::call(sink |
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, traits::get_absolute_value(attr)); |
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} |
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public: |
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template <typename Context, typename Unused> |
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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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// check template Attribute '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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BOOST_SPIRIT_ASSERT_MSG(std::numeric_limits<T>::is_signed, |
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signed_unsigned_mismatch, ()); |
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// int has a Attribute attached |
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template <typename OutputIterator, typename Context, typename Delimiter |
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, typename Attribute> |
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static bool |
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generate(OutputIterator& sink, Context& context, Delimiter const& d |
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, Attribute const& attr) |
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{ |
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if (!traits::has_optional_value(attr)) |
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return false; // fail if it's an uninitialized optional |
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return insert_int(sink, traits::extract_from<T>(attr, context)) && |
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delimit_out(sink, d); // always do post-delimiting |
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} |
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// this int has no Attribute attached, it needs to have been |
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// initialized from a direct literal |
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template <typename OutputIterator, typename Context, typename Delimiter> |
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static bool |
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generate(OutputIterator&, Context&, Delimiter const&, unused_type) |
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{ |
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// It is not possible (doesn't make sense) to use numeric generators |
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// without providing any attribute, as the generator doesn't 'know' |
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// what to output. The following assertion fires if this situation |
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// is detected in your code. |
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BOOST_SPIRIT_ASSERT_MSG(false, int_not_usable_without_attribute, ()); |
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return false; |
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} |
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template <typename Context> |
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static info what(Context const& /*context*/) |
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{ |
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return info("integer"); |
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} |
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}; |
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/////////////////////////////////////////////////////////////////////////// |
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// This specialization is used for int generators having a direct |
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// initializer: int_(10), long_(20) etc. |
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/////////////////////////////////////////////////////////////////////////// |
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template < |
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typename T, typename CharEncoding, typename Tag, unsigned Radix |
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, bool force_sign, bool no_attribute> |
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struct literal_int_generator |
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: primitive_generator<literal_int_generator<T, CharEncoding, Tag, Radix |
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, force_sign, no_attribute> > |
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{ |
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private: |
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template <typename OutputIterator, typename Attribute> |
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static bool insert_int(OutputIterator& sink, Attribute const& attr) |
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{ |
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return sign_inserter::call(sink, traits::test_zero(attr) |
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, traits::test_negative(attr), force_sign) && |
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int_inserter<Radix, CharEncoding, Tag>::call(sink |
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, traits::get_absolute_value(attr)); |
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} |
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public: |
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template <typename Context, typename Unused = unused_type> |
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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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literal_int_generator(typename add_const<T>::type n) |
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: n_(n) {} |
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// check template Attribute '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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BOOST_SPIRIT_ASSERT_MSG(std::numeric_limits<T>::is_signed, |
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signed_unsigned_mismatch, ()); |
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// A int_(1) which additionally has an associated attribute emits |
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// its immediate literal only if it matches the attribute, otherwise |
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// it fails. |
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template <typename OutputIterator, typename Context, typename Delimiter |
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, typename Attribute> |
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bool generate(OutputIterator& sink, Context& context |
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, Delimiter const& d, Attribute const& attr) const |
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{ |
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typedef typename attribute<Context>::type attribute_type; |
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if (!traits::has_optional_value(attr) || |
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n_ != traits::extract_from<attribute_type>(attr, context)) |
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{ |
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return false; |
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} |
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return insert_int(sink, n_) && delimit_out(sink, d); |
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} |
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// A int_(1) without any associated attribute just emits its |
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// immediate literal |
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template <typename OutputIterator, typename Context, typename Delimiter> |
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bool generate(OutputIterator& sink, Context&, Delimiter const& d |
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, unused_type) const |
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{ |
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return insert_int(sink, n_) && delimit_out(sink, d); |
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} |
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template <typename Context> |
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static info what(Context const& /*context*/) |
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{ |
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return info("integer"); |
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} |
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T n_; |
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}; |
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/////////////////////////////////////////////////////////////////////////// |
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// Generator generators: make_xxx function (objects) |
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/////////////////////////////////////////////////////////////////////////// |
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namespace detail |
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{ |
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template <typename T, typename Modifiers, unsigned Radix = 10 |
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, bool force_sign = false> |
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struct make_int |
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{ |
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static bool const lower = |
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has_modifier<Modifiers, tag::char_code_base<tag::lower> >::value; |
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static bool const upper = |
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has_modifier<Modifiers, tag::char_code_base<tag::upper> >::value; |
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typedef any_int_generator< |
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T |
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, typename spirit::detail::get_encoding_with_case< |
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Modifiers, unused_type, lower || upper>::type |
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, typename detail::get_casetag<Modifiers, lower || upper>::type |
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, Radix |
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, force_sign |
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> 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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} |
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/////////////////////////////////////////////////////////////////////////// |
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template <typename Modifiers> |
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struct make_primitive<tag::short_, Modifiers> |
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: detail::make_int<short, Modifiers> {}; |
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template <typename Modifiers> |
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struct make_primitive<tag::int_, Modifiers> |
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: detail::make_int<int, Modifiers> {}; |
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template <typename Modifiers> |
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struct make_primitive<tag::long_, Modifiers> |
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: detail::make_int<long, Modifiers> {}; |
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#ifdef BOOST_HAS_LONG_LONG |
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template <typename Modifiers> |
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struct make_primitive<tag::long_long, Modifiers> |
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: detail::make_int<boost::long_long_type, Modifiers> {}; |
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#endif |
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template <typename T, unsigned Radix, bool force_sign, typename Modifiers> |
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struct make_primitive<tag::int_generator<T, Radix, force_sign>, Modifiers> |
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: detail::make_int<typename remove_const<T>::type |
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, Modifiers, Radix, force_sign> {}; |
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/////////////////////////////////////////////////////////////////////////// |
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namespace detail |
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{ |
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template <typename T, typename Modifiers, unsigned Radix = 10 |
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, bool force_sign = false> |
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struct make_int_direct |
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{ |
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static bool const lower = |
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has_modifier<Modifiers, tag::char_code_base<tag::lower> >::value; |
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static bool const upper = |
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has_modifier<Modifiers, tag::char_code_base<tag::upper> >::value; |
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typedef literal_int_generator< |
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T |
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, typename spirit::detail::get_encoding_with_case< |
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Modifiers, unused_type, lower || upper>::type |
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, typename detail::get_casetag<Modifiers, lower || upper>::type |
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, Radix, force_sign, 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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} |
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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::short_, fusion::vector1<A0> >, Modifiers> |
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: detail::make_int_direct<short, Modifiers> {}; |
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template <typename Modifiers, typename A0> |
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struct make_primitive< |
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terminal_ex<tag::int_, fusion::vector1<A0> >, Modifiers> |
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: detail::make_int_direct<int, Modifiers> {}; |
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template <typename Modifiers, typename A0> |
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struct make_primitive< |
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terminal_ex<tag::long_, fusion::vector1<A0> >, Modifiers> |
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: detail::make_int_direct<long, Modifiers> {}; |
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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::long_long, fusion::vector1<A0> >, Modifiers> |
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: detail::make_int_direct<boost::long_long_type, Modifiers> {}; |
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#endif |
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template <typename T, unsigned Radix, bool force_sign, typename A0 |
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, typename Modifiers> |
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struct make_primitive< |
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terminal_ex<tag::int_generator<T, Radix, force_sign> |
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, fusion::vector1<A0> >, Modifiers> |
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: detail::make_int_direct<typename remove_const<T>::type |
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, Modifiers, Radix, force_sign> {}; |
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/////////////////////////////////////////////////////////////////////////// |
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namespace detail |
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{ |
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template <typename T, typename Modifiers> |
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struct basic_int_literal |
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{ |
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static bool const lower = |
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has_modifier<Modifiers, tag::char_code_base<tag::lower> >::value; |
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static bool const upper = |
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has_modifier<Modifiers, tag::char_code_base<tag::upper> >::value; |
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typedef literal_int_generator< |
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T |
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, typename spirit::detail::get_encoding_with_case< |
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Modifiers, unused_type, lower || upper>::type |
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, typename detail::get_casetag<Modifiers, lower || upper>::type |
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, 10, false, true |
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> result_type; |
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template <typename T_> |
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result_type operator()(T_ i, unused_type) const |
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{ |
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return result_type(i); |
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} |
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}; |
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} |
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template <typename Modifiers> |
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struct make_primitive<short, Modifiers> |
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: detail::basic_int_literal<short, Modifiers> {}; |
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template <typename Modifiers> |
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struct make_primitive<int, Modifiers> |
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: detail::basic_int_literal<int, Modifiers> {}; |
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template <typename Modifiers> |
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struct make_primitive<long, Modifiers> |
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: detail::basic_int_literal<long, Modifiers> {}; |
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#ifdef BOOST_HAS_LONG_LONG |
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template <typename Modifiers> |
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struct make_primitive<boost::long_long_type, Modifiers> |
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: detail::basic_int_literal<boost::long_long_type, Modifiers> {}; |
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#endif |
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// lit(int) |
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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 |
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, typename enable_if<traits::is_int<A0> >::type> |
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{ |
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static bool const lower = |
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has_modifier<Modifiers, tag::char_code_base<tag::lower> >::value; |
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static bool const upper = |
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has_modifier<Modifiers, tag::char_code_base<tag::upper> >::value; |
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typedef literal_int_generator< |
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typename remove_const<A0>::type |
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, typename spirit::detail::get_encoding_with_case< |
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Modifiers, unused_type, lower || upper>::type |
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, typename detail::get_casetag<Modifiers, lower || upper>::type |
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, 10, false, true |
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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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}}} |
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#endif
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