Re: Error Handling

On 10/02/2011 22:42, Stewart, Robert wrote:

> Thanks, Joel, but I can't get things to compile and I don't find documentation on info.  I tried this:
>
> on_error<fail>(r,
>     if_(val(')') == _4)
>     [
>        ...
>     ]);
>
> That didn't compile, so I tried this:
>
> on_error<fail>(r,
>     if_(ref(")") == _4)
>     [
>        ...
>     ]);
>
> That didn't compile either.  The only use of _4 in the documentation streams it to std::cout.  What am I missing?  Did I misunderstand you?

The what parameter is a boost::spirit::info, which is basically a tree 
of strings.

Hopefully get<utf8_string>(info.value) will get you something more 
practical out of it, since it should never be a tree in this context.

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