December 2011 - Boost - lists.boost.org

Boost.Log plan
by Leon 02 Dec '11

02 Dec '11

Hi, What's the current plan for Boost.Log? Will it be part of 1.49.0? Bests, Leon

2 1

Local and Phoenix idiosyncrasy
by Thomas Heller 02 Dec '11

02 Dec '11

Hi list, Can we please put an end to this insane idiosyncrasy going on here lately? It doesn't lead to anywhere! Ok, we get it ... people want to write local functions in the usual way. Here is what I have to propose: Why not combine Boost.Local and Boost.Phoenix and keep everybody happy? If the macros provided by Boost.Local would emit some instance of a phoenix::function. It would be great if this could be done completely polymorphic, maybe some tricks with boost::any? That way we gain these advantages: 1) We can get rid of the need to capture variables in scope by the macro. 2) People who don't want to put their functions in global/namespace/class scope and are afraid of writing a phoenix expression don't have to 3) The resulting lazy function will be composable in the usual phoenix way and will be far more useful! 4) We can put an end to this useless Phoenix vs. Local discussion In peace, Thomas

7 12

Boost.Thread and Boost.Move collision
by Ion Gaztañaga 01 Dec '11

01 Dec '11

Hi, I've recently received some bugs caused by name collision between Boost.Move and Boost.Thread. Like many other libraries, Boost.Thread has its own move emulation code, and those functions are in the top-level namespace. I guess there is no trivial solution for this. Options: 1) Move Boost.Move elements to boost::move:: namespace 2) Move Boost.Thread elements to boost::thread namespace 3) Modify Boost.Thread to make use of Boost.Move I would like to know your opinion on this as this issue is related to two official Boost libraries. Best, Ion

8 8

Re: [boost] New libraries implementing C++11 features in C++03
by Brent Spillner 01 Dec '11

01 Dec '11

On 23 Nov 2011 10:21:50 Joel de Guzman wrote: >a good approximation of lambda is already existing in Boost. Namely: bind, >lambda and phoenix. I posted a Spirit example of lambda in action using >Phoenix: > >http://tinyurl.com/7w2h2r9 > >Try as hard as you can, but you cannot ever come close to the clarity of >he syntax presented there. Proponents of locals have cited error-messages >generated by the compiler as a justification for Locals. Locals is probably >a good workaround. But hear me out... First of all, this "trivial" example didn't even compile on the first machine I tried it on, which had Boost 1.45 (which doesn't expose qi:_val_type or qi:_1_type). This is a pretty good reminder of the fact that Phoenix remains a fast moving target (1.45 is less than a year old) and still appears unnecessarily baroque to new users (why are typenames that need to be cited in even a basic tutorial prefixed with an underscore?) Local/Closure, on the other hand, seems to have a pretty stable interface at this point. On a machine with 1.48, the example compiles just fine. If you were to pass std::string::iterators instead of const_iterators to phrase_parse(), though ( a pretty common class of mistake in the real world), you get this error message (GCC 4.4.4): /usr/include/boost/spirit/home/qi/reference.hpp: In member function 'bool boost::spirit::qi::reference<Subject>::parse(Iterator&, const Iterator&, Context&, const Skipper&, Attribute&) const [with Iterator = __gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, Context = boost::spirit::context<boost::fusion::cons<int&, boost::fusion::nil>, boost::spirit::locals<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >, Skipper = boost::spirit::qi::phrase_parse(Iterator&, Iterator, const Expr&, const Skipper&, boost::spirit::qi::skip_flag::enum_type, Attr&) [with Iterator = __gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, Expr = client::calculator<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >, Skipper = boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, Attr = int]::skipper_type, Attribute = int, Subject = const boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>]': /usr/include/boost/spirit/home/qi/parse.hpp:164: instantiated from 'bool boost::spirit::qi::phrase_parse(Iterator&, Iterator, const Expr&, const Skipper&, boost::spirit::qi::skip_flag::enum_type, Attr&) [with Iterator = __gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, Expr = client::calculator<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >, Skipper = boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, Attr = int]' /usr/include/boost/spirit/home/qi/parse.hpp:197: instantiated from 'bool boost::spirit::qi::phrase_parse(Iterator&, Iterator, const Expr&, const Skipper&, Attr&) [with Iterator = __gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, Expr = main()::calculator, Skipper = boost::spirit::ascii::space_type, Attr = int]' calc3.cpp:101: instantiated from here /usr/include/boost/spirit/home/qi/reference.hpp:43: error: no matching function for call to 'boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>::parse(__gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >&, const __gnu_cxx::__normal_iterator<char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >&, boost::spirit::context<boost::fusion::cons<int&, boost::fusion::nil>, boost::spirit::locals<mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >&, const boost::spirit::qi::char_class<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >&, int&) const' But that's nothing; if you omit the '>>' from the expression or term definition you get the 33 kilochar beauty copied at the bottom of this email. There have been several postings to this list in the past about trivial errors (substituting the wrong type or omitting a forward declaration and so forth) that generate hundreds of kilobytes of compiler barf with no apparent relation to what is actually wrong with the source. Yes, the compiler is also largely to blame (although GCC does not seem any worse here than the other mainstream options) and perhaps someday this will finally get better, but I think you grossly underestimate the deterrent effect this has on new users and on wider adoption of Phoenix and similar libraries. Phoenix is great when you really need it, but there's also quite a lot to be said for alternatives (including Boost.Local) that don't build massive, fragile scaffolds of parametric types and in some sense keep what the compiler 'sees' on a given line of source similar to what the programmer sees in a text editor. Don't get me wrong; I think Phoenix is an amazing piece of work, and for someone who needs late binding and lazy evaluation in an expression (or a small DSEL without depending on an external parser generator) it's a godsend. I just happen to believe that you could say the same things about Boost.Local--- if this is what you need, it's *exactly* what you need. Many Boost users may never need local functions, but you could again say the same thing about the vast majority of the 113 official components of 1.48. If you want to keep Boost limited to the bare essentials, it's already far too late. The bar for entry should be that the library is well designed, well documented, well implemented, serves a need that a nontrivial number of users have, and isn't likely to interfere with the implementation of other future language or Boost features, not that it will be used just as frequently as enable_if<> or optional<>. >Keep in mind that Boost has been at the forefront of C++ library development. >It is because of these libraries that push the limits of C++ that we see the >advancement in C++ that we enjoy now in C++11. Case in point is Boost Lambda Hey, that's great. I just think that we all need to recognize that very little C++ software is written with "push the limits of the language" as one of the goals in mind. The participants on this particular list have self-selected for interest in developing state-of-the-art libraries, but most also have day jobs where they're just trying to maintain an existing codebase with minimal hassle for their colleagues and customers, as well as side projects where getting something running quickly and correctly is more important (if not always more interesting) than figuring out just how far we can push overload resolution rules. And probably 99% of Boost users and 99.9% of potential Boost users aren't the kind of programmers on this list and have no interest at all in "pushing the envelope"--- they just want tools with simple, stable syntax and easy debugging, both of which Local offers. Furthermore, no matter how slick your personal environment is, it's a simple fact that there are thousands and thousands of important projects that will never have the benefit of a C++11 compiler for a variety of reasons. I *really* don't understand the criticism from several people about using macros to implement the library. Part of the power of C++ is that its syntax is extensible, and the preprocessor and operator overloading are the two mechanisms that enable that. The preprocessor is part of the language specification, arguably even more so than the standard library since a (nonconforming) implementation that ships with only 10% of the standard library implemented is far more useful in practice than an implementation that ships with only 10% of the preprocessor implemented. Yes, macros can be abused, as can operator overloading (as many would criticize Phoenix), but often they're the most appropriate choice. There should be only two questions here: are there a nontrivial number of users who desire or would benefit from local functions, and is there a better way to provide them than what Lorenzo has chosen? ------------------- Horrific error messages follow --------------------- /usr/include/boost/spirit/home/qi/nonterminal/rule.hpp: In static member function 'static void boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>::define(boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>&, const Expr&, mpl_::false_) [with Auto = mpl_::bool_<false>, Expr = boost::proto::exprns_::expr<boost::proto::tagns_::tag::multiplies, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::plus_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::minus_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&>, 2l>&>, 2l>, Iterator = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, T1 = int(), T2 = boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, T3 = boost::spirit::unused_type, T4 = boost::spirit::unused_type]': /usr/include/boost/spirit/home/qi/nonterminal/rule.hpp:220: instantiated from 'boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>& boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>::operator=(const Expr&) [with Expr = boost::proto::exprns_::expr<boost::proto::tagns_::tag::multiplies, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::plus_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::minus_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&>, 2l>&>, 2l>, Iterator = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, T1 = int(), T2 = boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, T3 = boost::spirit::unused_type, T4 = boost::spirit::unused_type]' calc3.cpp:49: instantiated from 'client::calculator<Iterator>::calculator() [with Iterator = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >]' calc3.cpp:90: instantiated from here /usr/include/boost/spirit/home/qi/nonterminal/rule.hpp:176: error: no matching function for call to 'assertion_failed(mpl_::failed************ (boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>::define(boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>&, const Expr&, mpl_::false_) [with Auto = mpl_::bool_<false>, Expr = boost::proto::exprns_::expr<boost::proto::tagns_::tag::multiplies, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::plus_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::minus_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&>, 2l>&>, 2l>, Iterator = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, T1 = int(), T2 = boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, T3 = boost::spirit::unused_type, T4 = boost::spirit::unused_type]::error_invalid_expression::************)(boost::proto::exprns_::expr<boost::proto::tagns_::tag::multiplies, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::plus_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::minus_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&>, 2l>&>, 2l>))' /usr/include/boost/spirit/home/qi/nonterminal/rule.hpp: In static member function 'static void boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>::define(boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>&, const Expr&, mpl_::false_) [with Auto = mpl_::bool_<false>, Expr = boost::proto::exprns_::expr<boost::proto::tagns_::tag::multiplies, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::multiplies_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::divides_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&>, 2l>&>, 2l>, Iterator = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, T1 = int(), T2 = boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, T3 = boost::spirit::unused_type, T4 = boost::spirit::unused_type]': /usr/include/boost/spirit/home/qi/nonterminal/rule.hpp:220: instantiated from 'boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>& boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>::operator=(const Expr&) [with Expr = boost::proto::exprns_::expr<boost::proto::tagns_::tag::multiplies, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::multiplies_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::divides_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&>, 2l>&>, 2l>, Iterator = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, T1 = int(), T2 = boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, T3 = boost::spirit::unused_type, T4 = boost::spirit::unused_type]' calc3.cpp:56: instantiated from 'client::calculator<Iterator>::calculator() [with Iterator = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >]' calc3.cpp:90: instantiated from here /usr/include/boost/spirit/home/qi/nonterminal/rule.hpp:176: error: no matching function for call to 'assertion_failed(mpl_::failed************ (boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>::define(boost::spirit::qi::rule<Iterator, T1, T2, T3, T4>&, const Expr&, mpl_::false_) [with Auto = mpl_::bool_<false>, Expr = boost::proto::exprns_::expr<boost::proto::tagns_::tag::multiplies, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::multiplies_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::divides_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&>, 2l>&>, 2l>, Iterator = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, T1 = int(), T2 = boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, T3 = boost::spirit::unused_type, T4 = boost::spirit::unused_type]::error_invalid_expression::************)(boost::proto::exprns_::expr<boost::proto::tagns_::tag::multiplies, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::bitwise_or, boost::proto::argsns_::list2<const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::multiplies_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::shift_right, boost::proto::argsns_::list2<boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const char&>, 0l>, const boost::proto::exprns_::expr<boost::proto::tagns_::tag::subscript, boost::proto::argsns_::list2<boost::spirit::qi::rule<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char, std::char_traits<char>, std::allocator<char> > >, int(), boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<boost::spirit::tag::char_code<boost::spirit::tag::space, boost::spirit::char_encoding::ascii> >, 0l>, boost::spirit::unused_type, boost::spirit::unused_type>&, boost::proto::exprns_::expr<boost::proto::tagns_::tag::terminal, boost::proto::argsns_::term<const boost::phoenix::actor<boost::phoenix::composite<boost::phoenix::divides_assign_eval, boost::fusion::vector<boost::spirit::attribute<0>, boost::spirit::argument<0>, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_, boost::fusion::void_> > >&>, 0l> >, 2l>&>, 2l>&>, 2l>&>, 2l>))'

18 82

error LNK2019: unresolved external symbol "public: void __thiscall BaseState::serialize<class boost::archive::xml_oarchive>
by Farren, Patrick 01 Dec '11

01 Dec '11

Hi I'm using VS2008 and boost 1.45 I have a static library that serializes to an xml file. I have a test app that calls a method within this static library to create the XML file. The following linker problem occurs and I cannot resolve it. Can anyone assist? Error 1 error LNK2019: unresolved external symbol "public: void __thiscall BaseState::serialize<class boost::archive::xml_oarchive>(class boost::archive::xml_oarchive &,unsigned int)" (??$serialize@Vxml_oarchive@archive@boost@@@BaseState@@QAEXAAVxml_oarchive@archive@boost@@I@Z) referenced in function "public: static void __cdecl boost::serialization::access::serialize<class boost::archive::xml_oarchive,class BaseState>(class boost::archive::xml_oarchive &,class BaseState &,unsigned int)" (??$serialize@Vxml_oarchive@archive@boost@@VBaseState@@@access@serialization@boost@@SAXAAVxml_oarchive@archive@2@AAVBaseState@@I@Z) dataAPIcpp.lib TestAPI Patrick.

1 0

[predef] RFC: Predefined version numbers library..
by Rene Rivera 01 Dec '11

01 Dec '11

Long ago, yes, years ago, I proposed normalizing the variety of ways of defining (in the preprocessor) version numbers and reflecting the predefined version information. As can be seen here <http://www.crystalclearsoftware.com/cgi-bin/boost_wiki/wiki.pl?BoostConfig>. Time traveling to the present I have finally put the finishing touches on the end result of this concept as a "Predef" library. It's now grown to include detection of more types of predefs, almost complete documentation with a reference generated directly from the source, and some utilities on adding new predefs. I'm still working on cross-platform testing. But I thought now would be a good time to ask for comments and for people to try it out. The lib is in the sandbox at <http://svn.boost.org/svn/boost/sandbox/predef>. And the docs can be rad directly from <http://svn.boost.org/svn/boost/sandbox/predef/libs/predef/doc/html/index.ht…>. Enjoy. -- -- Grafik - Don't Assume Anything -- Redshift Software, Inc. - http://redshift-software.com -- rrivera/acm.org (msn) - grafik/redshift-software.com -- 102708583/icq - grafikrobot/aim,yahoo,skype,efnet,gmail

2 2

Interest in hardware abstraction layer library
by Szymon Gutaj 01 Dec '11

01 Dec '11

Hi Everyone, please share your comments/interest in a library that would ease writing hardware abstraction layers (HAL's) for complex devices (like large ASIC/FPGA). Here's the description: 1. Let's assume that we've got a memory mapped IO device, controlled via its registers. Each register is divided into few bitfields. Each bitfield controls separate functionality and has its properties, like: read/write/special access, numeral/enumerated value type, value signedness, valid value range(s) etc. All these are typically listed in device's specification: +----------------+--------------+ |Register offset |Register name | +----------------+--------------+ |0x12FE |CONTROL_REG1 | +----------------+--------------+ +--------------+--------------+-------+-----------+------------+ |Bits occupied |Bitfield name |Access |Signedness |Value range | +--------------+--------------+-------+-----------+------------+ |31:25 |TEMPERATURE |RA |SIGNED |- | +--------------+--------------+-------+-----------+------------+ |24:1 |FAN_RPM |WA |UNSIGNED |0:6000 | +--------------+--------------+-------+-----------+------------+ |0:0 |ENABLE |RWA |UNSIGNED |0:1 | +--------------+--------------+-------+-----------+------------+ Note: RA: Read Access, WA: Write Access, RWA: Read/Write Access 2. Let's assume that there's a whole family of these ASICs (subsequent generations/revisions). Each new revision differs from previous one only in few details. The point is that we may have few thousand bitfields per ASIC plus revision changes. Coding such amount of information "by hand" is obviously error-prone. Using text processing (perl/python) to translate the specification to code may obfuscate it's nice tabular format (and may miss features/optimisation offered by metaprogramming). 3. Our goal is to create an abstract interface (HAL). Its implementations would "talk to" corresponding bitfields via inner (intermediate) interface. The purpose of that intermediate code would be to: - present bitfield's name exactly "as is in specification", - extract bitfield's value from its register in a typed, endiannes-correct manner, - enforce correct usage (like forbidding writing read-only fields), - provide value validation, - provide value conversion (enumeration-to-numeral etc.), - provide array-style access if needed, - provide debugging features, - and few more cherries on top. The key point is to have most of this code generated from the specification using only simple regexp (to the form required by proposed library). 4. Code snippet (using specification from point 1) - simple and simplified: Let's create an interface with one member function "operate". Implementation of this function will "talk to" bitfields of CONTROL_REG1 through get<BITFIELD> and set<BITFIELD> functions. These functions (and few other utilities) are being generated by the proposed library, using provided metadata. // Definition of HAL interface --------------------------- namespace some_subsystem { namespace driver { class some_controller { public: virtual bool operate() = 0; }; }} // Definition of bitfields (metadata) -------------------- // Concrete device definition enclosed in a dedicated namespace namespace some_subsystem { namespace driver { namespace asic_ver_123 { // Legend: // BOOST_HAL_DEF_REGISTER_BEG(REGISTER_OFFSET, REGISTER_NAME) // BOOST_HAL_DEF_FIELD(MSBIT, LSBIT, BITFIELD_NAME, ACCESS, SIGNEDNESS, VALIDATOR) // BOOST_HAL_DEF_REGISTER_END() BOOST_HAL_DEF_REGISTER_BEG(0x12FE, CONTROL_REG1) // Register definition BOOST_HAL_DEF_FIELD(30, 25, TEMPERATURE, RA, SIGNED, CTP_ESC(no_check)) // CTP_ESC meant for commas escaping BOOST_HAL_DEF_FIELD(24, 1, FAN_RPM, WA, UNSIGNED, CTP_ESC(range<0, 6000>)) BOOST_HAL_DEF_FIELD(0, 0, ENABLE, WA, UNSIGNED, CTP_ESC(range<0, 1>)) BOOST_HAL_DEF_REGISTER_END() }}} // Definition of HAL implementation ---------------------- namespace some_subsystem { namespace driver { namespace asic_ver_123 { class some_controller_impl : public some_controller { public: virtual bool operate() { bool result = false; // Suitable bitfield type is deduced from its definition (but can be manually overridden) // In this case it will be signed char or bigger (CONTROL_REG1::TEMPERATURE = 6 bits) suitable<CONTROL_REG1::TEMPERATURE>::type temperature = 0; // Library automatically generates the bitfield's getter // which reads the register, masks & shifts unrelated bits, // performs (optional) value conversion and (mandatory) cast. // Debugging/logging also possible result = get<CONTROL_REG1::TEMPERATURE>(temperature); // Pass "temperature" by reference // This would not compile, CONTROL_REG1::TEMPERATURE is read-only // result |= set<CONTROL_REG1::TEMPERATURE>(temperature); // Compile error if(true == result && temperature > 20) { // Library automatically generates the bitfield's setter // which performs read-modify-write with value validation result |= set<CONTROL_REG1::FAN_RPM>(1000); result |= set<CONTROL_REG1::ENABLE>(true); // This would return "false" (7000 is an invalid value for FAN_RPM) // result |= set<CONTROL_REG1::FAN_RPM>(7000); } else { result |= set<CONTROL_REG1::FAN_RPM>(0); result |= set<CONTROL_REG1::ENABLE>(false); } return result; } }; }}} // End of snippet ---------------------------------------------- This snippet shows the very basic functionality, anyway please share your opinions if the idea is catchy and suitable for boost! Best regards, -- Szymon Gutaj

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typos in boost/atomic/details/interlocked.hpp
by Clark Sims 01 Dec '11

01 Dec '11

It looks like there are a lot of typos in this file. It would not compile on Visual Studio 2005 for me. I fixed all the typos, and now I can compile with no problem. There were lots of cases where the author looks like he forgot to add the variable, order, to the argument list of the function. < atomic_thread_fence(memory_order order) --- > atomic_thread_fence(memory_order) Here is a link to my final version of the file: http://acumensoftwareinc.com/interlocked.hpp Here is the diff of the 2 versions: 10d9 < #include <boost/memory_order.hpp> 33c32 < platform_fence_before(memory_order order) --- > platform_fence_before(memory_order) 38c37 < platform_fence_after(memory_order order) --- > platform_fence_after(memory_order) 43c42 < platform_fence_before_store(memory_order order) --- > platform_fence_before_store(memory_order) 55c54 < platform_fence_after_load(memory_order order) --- > platform_fence_after_load(memory_order) 57,58c56,57 < if (order == memory_order_seq_cst) { < x86_full_fence(); --- > if (order == memory_order_seq_cst()) { > x86_full_fence(void); 89c88 < atomic_thread_fence(memory_order order) --- > atomic_thread_fence(memory_order) 91,92c90,91 < if (order == memory_order_seq_cst) { < detail::atomic::x86_full_fence(); --- > if (order == memory_order_seq_cst()) { > detail::atomic::x86_full_fence(void)

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