Re: [boost] [variant] Visual Studio debug visualizers

14 Jun 2009

      AMDG

Dmitry Vinogradov wrote:
...
I wrote a simple debug visualizer for boost::variant and I want to 
share it with community.
boost::variant<*,*,*,*,*,*,*,*,*,*,*> {
    preview (
        #(
            #switch($c.which_)
            #case 0 ( *($T1 *)&($c.storage_.data_) )
            <snip...>
        )
    )
    children
    (
        #(
        value:
            #switch($c.which_)
            #case 0 ( *($T1 *)&($c.storage_.data_) )
            <snip...>
        )
    )
}
This is a great start.  There are a few more things I'd like to see.
* if which_ is negative it means that the variant is storing a pointer
  to an object of type T ## -(which_ + 1).
* make_variant_over allows a variant to be created from a type sequence.
* make_recursive variant causes the type of the variant itself to be 
substituted
  any instances of the placeholder boost::recursive_variant in the template
  arguments.

The latter two are hard and may be impossible to support, but I would
definitely like to see support for the first point.

In Christ,
Steven Watanabe