Re: [Boost-users] [graph][spirit][variant] Boost.Graph and Boost.Spirit incompatible ?

Subject: Re: [Boost-users] [graph][spirit][variant] Boost.Graph and Boost.Spirit incompatible ?
From: Jeremiah Willcock (jewillco_at_[hidden])
Date: 2010-03-08 13:58:05

On Mon, 8 Mar 2010, Steven Watanabe wrote:

> AMDG
>
> Jeremiah Willcock wrote:
>>> I thought at first that it would, but unfortunately not.
>>> Suppose that the argument is a built-in type...
>>> 
>>> So, here's try #2 at making property_traits usable
>>> for SFINAE (untested).
>> 
>> I did some little fixes to this (patch to trunk version of property_map.hpp 
>> attached) and it again passes the graph, graph_parallel, and property_map 
>> test cases.  Could you please try it again with the variant bug cases?
>
> The following tests both compile after I updated two_bit_color_map.hpp to
> use SFINAE on property_traits.
>
> #include <boost/graph/two_bit_color_map.hpp>
> #include <boost/variant.hpp>
>
> int test1() {
>   using namespace boost;
>   boost::variant<int, char> v;
>   int i = get<int>(v);
> }
>
> // make sure that it works even with incomplete types
> struct S;
>
> typedef boost::variant<boost::recursive_wrapper<S> > v_type;
>
> void test2(v_type& v) {
>   boost::get<S>(&v);
> }

Could you please also test the include_test.cpp that got this thread 
started?  If that passes I'll commit the change and see if the regression 
tests break (since there might be compiler compatibility issues).  Thank 
you.

-- Jeremiah Willcock