boost/spirit/home/karma/binary/binary.hpp
// Copyright (c) 2001-2010 Hartmut Kaiser // // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) #if !defined(BOOST_SPIRIT_KARMA_BINARY_MAY_04_2007_0904AM) #define BOOST_SPIRIT_KARMA_BINARY_MAY_04_2007_0904AM #if defined(_MSC_VER) #pragma once #endif #include <boost/spirit/home/support/common_terminals.hpp> #include <boost/spirit/home/support/info.hpp> #include <boost/spirit/home/support/detail/endian.hpp> #include <boost/spirit/home/karma/domain.hpp> #include <boost/spirit/home/karma/meta_compiler.hpp> #include <boost/spirit/home/karma/delimit_out.hpp> #include <boost/spirit/home/karma/auxiliary/lazy.hpp> #include <boost/spirit/home/karma/detail/generate_to.hpp> #include <boost/spirit/home/karma/detail/extract_from.hpp> #include <boost/spirit/home/support/unused.hpp> #include <boost/spirit/home/support/container.hpp> #include <boost/fusion/include/vector.hpp> #include <boost/fusion/include/at.hpp> #include <boost/mpl/or.hpp> #include <boost/type_traits/is_integral.hpp> #include <boost/type_traits/is_enum.hpp> #include <boost/config.hpp> /////////////////////////////////////////////////////////////////////////////// #define BOOST_SPIRIT_ENABLE_BINARY(name) \ template <> \ struct use_terminal<karma::domain, tag::name> \ : mpl::true_ {}; \ \ template <typename A0> \ struct use_terminal<karma::domain \ , terminal_ex<tag::name, fusion::vector1<A0> > > \ : mpl::or_<is_integral<A0>, is_enum<A0> > {}; \ \ template <> \ struct use_lazy_terminal<karma::domain, tag::name, 1> : mpl::true_ {}; \ \ /***/ namespace boost { namespace spirit { /////////////////////////////////////////////////////////////////////////// // Enablers /////////////////////////////////////////////////////////////////////////// BOOST_SPIRIT_ENABLE_BINARY(byte_) // enables byte_ BOOST_SPIRIT_ENABLE_BINARY(word) // enables word BOOST_SPIRIT_ENABLE_BINARY(big_word) // enables big_word BOOST_SPIRIT_ENABLE_BINARY(little_word) // enables little_word BOOST_SPIRIT_ENABLE_BINARY(dword) // enables dword BOOST_SPIRIT_ENABLE_BINARY(big_dword) // enables big_dword BOOST_SPIRIT_ENABLE_BINARY(little_dword) // enables little_dword #ifdef BOOST_HAS_LONG_LONG BOOST_SPIRIT_ENABLE_BINARY(qword) // enables qword BOOST_SPIRIT_ENABLE_BINARY(big_qword) // enables big_qword BOOST_SPIRIT_ENABLE_BINARY(little_qword) // enables little_qword #endif }} #undef BOOST_SPIRIT_ENABLE_BINARY /////////////////////////////////////////////////////////////////////////////// namespace boost { namespace spirit { namespace karma { using boost::spirit::byte_; using boost::spirit::byte__type; using boost::spirit::word; using boost::spirit::word_type; using boost::spirit::big_word; using boost::spirit::big_word_type; using boost::spirit::little_word; using boost::spirit::little_word_type; using boost::spirit::dword; using boost::spirit::dword_type; using boost::spirit::big_dword; using boost::spirit::big_dword_type; using boost::spirit::little_dword; using boost::spirit::little_dword_type; #ifdef BOOST_HAS_LONG_LONG using boost::spirit::qword; using boost::spirit::qword_type; using boost::spirit::big_qword; using boost::spirit::big_qword_type; using boost::spirit::little_qword; using boost::spirit::little_qword_type; #endif namespace detail { template <int bits> struct integer { #ifdef BOOST_HAS_LONG_LONG BOOST_SPIRIT_ASSERT_MSG( bits == 8 || bits == 16 || bits == 32 || bits == 64, not_supported_binary_size, ()); #else BOOST_SPIRIT_ASSERT_MSG( bits == 8 || bits == 16 || bits == 32, not_supported_binary_size, ()); #endif }; template <> struct integer<8> { typedef uint_least8_t type; }; template <> struct integer<16> { typedef uint_least16_t type; }; template <> struct integer<32> { typedef uint_least32_t type; }; #ifdef BOOST_HAS_LONG_LONG template <> struct integer<64> { typedef uint_least64_t type; }; #endif /////////////////////////////////////////////////////////////////////// template <BOOST_SCOPED_ENUM(boost::integer::endianness) bits> struct what; template <> struct what<boost::integer::endianness::native> { static info is() { return info("native-endian binary"); } }; template <> struct what<boost::integer::endianness::little> { static info is() { return info("little-endian binary"); } }; template <> struct what<boost::integer::endianness::big> { static info is() { return info("big-endian binary"); } }; } /////////////////////////////////////////////////////////////////////////// template <BOOST_SCOPED_ENUM(boost::integer::endianness) endian, int bits> struct any_binary_generator : primitive_generator<any_binary_generator<endian, bits> > { template <typename Context, typename Unused = unused_type> struct attribute : karma::detail::integer<bits> {}; template < typename OutputIterator, typename Context, typename Delimiter , typename Attribute> static bool generate(OutputIterator& sink, Context& context , Delimiter const& d, Attribute const& attr) { if (!traits::has_optional_value(attr)) return false; // Even if the endian types are not pod's (at least not in the // definition of C++03) it seems to be safe to assume they are. // This allows us to treat them as a sequence of consecutive bytes. boost::integer::endian< endian, typename karma::detail::integer<bits>::type, bits > p; #if defined(BOOST_MSVC) // warning C4244: 'argument' : conversion from 'const int' to 'foo', possible loss of data #pragma warning(push) #pragma warning(disable: 4244) #endif p = traits::extract_from(attr, context); #if defined(BOOST_MSVC) #pragma warning(pop) #endif unsigned char const* bytes = reinterpret_cast<unsigned char const*>(&p); for (unsigned int i = 0; i < sizeof(p); ++i) { if (!detail::generate_to(sink, *bytes++)) return false; } return karma::delimit_out(sink, d); // always do post-delimiting } // this any_byte_director has no parameter attached, it needs to have // been initialized from a direct literal template < typename OutputIterator, typename Context, typename Delimiter> static bool generate(OutputIterator& sink, Context&, Delimiter const& d , unused_type) { // It is not possible (doesn't make sense) to use binary generators // without providing any attribute, as the generator doesn't 'know' // what to output. The following assertion fires if this situation // is detected in your code. BOOST_SPIRIT_ASSERT_MSG(false, binary_generator_not_usable_without_attribute, ()); return false; } template <typename Context> static info what(Context const& /*context*/) { return karma::detail::what<endian>::is(); } }; /////////////////////////////////////////////////////////////////////////// template <BOOST_SCOPED_ENUM(boost::integer::endianness) endian, int bits> struct literal_binary_generator : primitive_generator<literal_binary_generator<endian, bits> > { template <typename Context, typename Unused> struct attribute { typedef unused_type type; }; template <typename T> literal_binary_generator(T const& t) { #if defined(BOOST_MSVC) // warning C4244: 'argument' : conversion from 'const int' to 'foo', possible loss of data #pragma warning(push) #pragma warning(disable: 4244) #endif data_ = t; #if defined(BOOST_MSVC) #pragma warning(pop) #endif } template < typename OutputIterator, typename Context, typename Delimiter , typename Attribute> bool generate(OutputIterator& sink, Context&, Delimiter const& d , Attribute const&) const { // Even if the endian types are not pod's (at least not in the // definition of C++03) it seems to be safe to assume they are // (but in C++0x the endian types _are_ PODs). // This allows us to treat them as a sequence of consecutive bytes. unsigned char const* bytes = reinterpret_cast<unsigned char const*>(&data_); for (unsigned int i = 0; i < sizeof(data_type); ++i) { if (!detail::generate_to(sink, *bytes++)) return false; } return karma::delimit_out(sink, d); // always do post-delimiting } template <typename Context> static info what(Context const& /*context*/) { return karma::detail::what<endian>::is(); } typedef boost::integer::endian< endian, typename karma::detail::integer<bits>::type, bits > data_type; data_type data_; }; /////////////////////////////////////////////////////////////////////////// // Generator generators: make_xxx function (objects) /////////////////////////////////////////////////////////////////////////// namespace detail { template <BOOST_SCOPED_ENUM(boost::integer::endianness) endian , int bits> struct basic_binary { typedef any_binary_generator<endian, bits> result_type; result_type operator()(unused_type, unused_type) const { return result_type(); } }; template <typename Modifiers , BOOST_SCOPED_ENUM(boost::integer::endianness) endian, int bits> struct basic_binary_literal { typedef literal_binary_generator<endian, bits> result_type; template <typename Terminal> result_type operator()(Terminal const& term, unused_type) const { return result_type(fusion::at_c<0>(term.args)); } }; } #define BOOST_SPIRIT_MAKE_BINARY_PRIMITIVE(name, endian, bits) \ template <typename Modifiers> \ struct make_primitive<tag::name, Modifiers> \ : detail::basic_binary<boost::integer::endianness::endian, bits> {}; \ \ template <typename Modifiers, typename A0> \ struct make_primitive<terminal_ex<tag::name, fusion::vector1<A0> > \ , Modifiers> \ : detail::basic_binary_literal<Modifiers \ , boost::integer::endianness::endian, bits> {}; \ \ /***/ BOOST_SPIRIT_MAKE_BINARY_PRIMITIVE(byte_, native, 8) BOOST_SPIRIT_MAKE_BINARY_PRIMITIVE(word, native, 16) BOOST_SPIRIT_MAKE_BINARY_PRIMITIVE(big_word, big, 16) BOOST_SPIRIT_MAKE_BINARY_PRIMITIVE(little_word, little, 16) BOOST_SPIRIT_MAKE_BINARY_PRIMITIVE(dword, native, 32) BOOST_SPIRIT_MAKE_BINARY_PRIMITIVE(big_dword, big, 32) BOOST_SPIRIT_MAKE_BINARY_PRIMITIVE(little_dword, little, 32) #ifdef BOOST_HAS_LONG_LONG BOOST_SPIRIT_MAKE_BINARY_PRIMITIVE(qword, native, 64) BOOST_SPIRIT_MAKE_BINARY_PRIMITIVE(big_qword, big, 64) BOOST_SPIRIT_MAKE_BINARY_PRIMITIVE(little_qword, little, 64) #endif #undef BOOST_SPIRIT_MAKE_BINARY_PRIMITIVE }}} #endif