526 lines
19 KiB
C++
526 lines
19 KiB
C++
// Copyright (c) 2001-2012 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_FAIL(OutputIterator, 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
|
|
> result_type;
|
|
|
|
template <typename Terminal>
|
|
result_type operator()(Terminal const& term, unused_type) const
|
|
{
|
|
return result_type(fusion::at_c<0>(term.args));
|
|
}
|
|
};
|
|
}}}
|
|
|
|
#endif
|