• "dsimcha" <dsimcha yahoo.com> Dec 08 2011
• "Vladimir Panteleev" <vladimir thecybershadow.net> Dec 08 2011

"dsimcha" <dsimcha yahoo.com> writes:

I've recently started using DustMite to reduce compiler errors in 
SciD, which instantiates an insane number of templates and is 
nightmarish to reduce by hand.

Two questions:

1.  What exactly does unwrap (as opposed to remove) do?

2.  When there are multiple imports in a single statement, i.e. 
"import foo, bar;", does DustMite try to get rid of individual 
ones without deleting the whole statement?  Is this what unwrap 
does?

"Vladimir Panteleev" <vladimir thecybershadow.net> writes:

On Thursday, 8 December 2011 at 21:39:20 UTC, dsimcha wrote:
 I've recently started using DustMite to reduce compiler errors 
 in SciD, which instantiates an insane number of templates and 
 is nightmarish to reduce by hand.

 Two questions:

 1.  What exactly does unwrap (as opposed to remove) do?


Unwrap is a reduction operation which tries replacing a node with 
its children. It will remove redundant parens and braces, for 
example.

 2.  When there are multiple imports in a single statement, i.e. 
 "import foo, bar;", does DustMite try to get rid of individual 
 ones without deleting the whole statement?


Yes, but it can't remove the first (or the last, I forgot) item 
in a comma-separated list. This is because the internal 
representation has no notions of token-separated lists. It's a 
long-standing complicated problem.

 Is this what unwrap does?


No.