241 lines
9.3 KiB
C++
Executable File
241 lines
9.3 KiB
C++
Executable File
// Copyright (c) 2001-2008 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) && (_MSC_VER >= 1020)
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#pragma once // MS compatible compilers support #pragma once
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#endif
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#include <limits>
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#include <boost/spirit/home/support/modifier.hpp>
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#include <boost/spirit/home/karma/domain.hpp>
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#include <boost/spirit/home/karma/delimit.hpp>
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#include <boost/spirit/home/karma/numeric/numeric_fwd.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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#include <boost/mpl/assert.hpp>
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namespace boost { namespace spirit { namespace karma
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{
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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 a parameter.
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///////////////////////////////////////////////////////////////////////////
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template <typename T, unsigned Radix, bool ForceSign, typename Tag>
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struct int_generator<false, T, Radix, ForceSign, Tag>
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{
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template <typename Component, 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 parameter 'Radix' for validity
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BOOST_MPL_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_MPL_ASSERT_MSG(std::numeric_limits<T>::is_signed,
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signed_unsigned_mismatch, ());
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// int has a parameter attached
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template <typename Component, typename OutputIterator,
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typename Context, typename Delimiter, typename Parameter>
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static bool
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generate(Component const& /*component*/, OutputIterator& sink,
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Context& /*ctx*/, Delimiter const& d, Parameter const& param)
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{
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sign_inserter<ForceSign>::call(sink, detail::is_zero(param),
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detail::is_negative(param));
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bool result = int_inserter<Radix, Tag>::call(sink,
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detail::absolute_value(param));
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karma::delimit(sink, d); // always do post-delimiting
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return result;
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}
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// this int has no parameter attached, it needs to have been
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// initialized from a direct literal
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template <typename Component, typename OutputIterator,
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typename Context, typename Delimiter>
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static bool
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generate(Component const&, OutputIterator&, Context&, Delimiter const&,
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unused_type)
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{
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BOOST_MPL_ASSERT_MSG(false, int__not_usable_without_parameter, ());
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return false;
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}
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template <typename Component, typename Context>
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static std::string what(Component const& component, Context const& ctx)
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{
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return "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 <typename T, unsigned Radix, bool ForceSign, typename Tag>
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struct int_generator<true, T, Radix, ForceSign, Tag>
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{
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template <typename Component, typename Context, typename Unused>
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struct attribute
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{
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typedef unused_type type;
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};
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// check template parameter 'Radix' for validity
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BOOST_MPL_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_MPL_ASSERT_MSG(std::numeric_limits<T>::is_signed,
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signed_unsigned_mismatch, ());
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template <typename Component, typename OutputIterator,
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typename Context, typename Delimiter, typename Parameter>
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static bool
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generate(Component const& component, OutputIterator& sink,
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Context& /*ctx*/, Delimiter const& d, Parameter const& /*param*/)
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{
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T n = fusion::at_c<0>(component.elements);
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sign_inserter<ForceSign>::call(sink, detail::is_zero(n),
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detail::is_negative(n));
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bool result = int_inserter<Radix, Tag>::call(sink,
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detail::absolute_value(n));
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karma::delimit(sink, d); // always do post-delimiting
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return result;
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}
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template <typename Component, typename Context>
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static std::string what(Component const& component, Context const& ctx)
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{
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return "integer";
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}
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};
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}}}
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namespace boost { namespace spirit { namespace traits
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{
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///////////////////////////////////////////////////////////////////////////
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// lower_case int_generator generator
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///////////////////////////////////////////////////////////////////////////
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template <typename Domain, typename Elements, typename Modifier,
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typename T, unsigned Radix, bool ForceSign, typename Tag>
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struct make_modified_component<
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Domain, karma::int_generator<false, T, Radix, ForceSign, Tag>, Elements, Modifier,
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typename enable_if<
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is_member_of_modifier<Modifier, spirit::char_class::lower_case_base_tag>
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>::type
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>
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{
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typedef typename Modifier::char_set char_set;
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typedef spirit::char_class::tag::lower char_class_;
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typedef spirit::char_class::key<char_set, char_class_> key_tag;
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typedef karma::int_generator<false, T, Radix, ForceSign, key_tag> int_type;
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typedef component<karma::domain, int_type, fusion::nil> type;
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static type
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call(Elements const&)
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{
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return type(fusion::nil());
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}
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};
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template <typename Domain, typename Elements, typename Modifier,
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typename T, unsigned Radix, bool ForceSign, typename Tag>
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struct make_modified_component<
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Domain, karma::int_generator<true, T, Radix, ForceSign, Tag>, Elements, Modifier,
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typename enable_if<
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is_member_of_modifier<Modifier, spirit::char_class::lower_case_base_tag>
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>::type
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>
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{
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typedef typename Modifier::char_set char_set;
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typedef spirit::char_class::tag::lower char_class_;
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typedef spirit::char_class::key<char_set, char_class_> key_tag;
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typedef typename
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fusion::result_of::value_at_c<Elements, 0>::type
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int_data_type;
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typedef fusion::vector<int_data_type> vector_type;
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typedef karma::int_generator<true, T, Radix, ForceSign, key_tag> int_type;
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typedef component<karma::domain, int_type, vector_type> type;
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static type
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call(Elements const& elements)
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{
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return type(elements);
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}
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};
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///////////////////////////////////////////////////////////////////////////
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// upper_case int_generator generator
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///////////////////////////////////////////////////////////////////////////
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template <typename Domain, typename Elements, typename Modifier,
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typename T, unsigned Radix, bool ForceSign, typename Tag>
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struct make_modified_component<
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Domain, karma::int_generator<false, T, Radix, ForceSign, Tag>, Elements, Modifier,
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typename enable_if<
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is_member_of_modifier<Modifier, spirit::char_class::upper_case_base_tag>
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>::type
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>
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{
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typedef typename Modifier::char_set char_set;
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typedef spirit::char_class::tag::upper char_class_;
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typedef spirit::char_class::key<char_set, char_class_> key_tag;
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typedef karma::int_generator<false, T, Radix, ForceSign, key_tag> int_type;
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typedef component<karma::domain, int_type, fusion::nil> type;
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static type
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call(Elements const&)
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{
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return type(fusion::nil());
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}
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};
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template <typename Domain, typename Elements, typename Modifier,
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typename T, unsigned Radix, bool ForceSign, typename Tag>
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struct make_modified_component<
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Domain, karma::int_generator<true, T, Radix, ForceSign, Tag>, Elements, Modifier,
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typename enable_if<
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is_member_of_modifier<Modifier, spirit::char_class::upper_case_base_tag>
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>::type
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>
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{
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typedef typename Modifier::char_set char_set;
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typedef spirit::char_class::tag::upper char_class_;
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typedef spirit::char_class::key<char_set, char_class_> key_tag;
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typedef typename
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fusion::result_of::value_at_c<Elements, 0>::type
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int_data_type;
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typedef fusion::vector<int_data_type> vector_type;
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typedef karma::int_generator<true, T, Radix, ForceSign, key_tag> int_type;
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typedef component<karma::domain, int_type, vector_type> type;
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static type
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call(Elements const& elements)
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{
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return type(elements);
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}
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};
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}}} // namespace boost::spirit::traits
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#endif
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