Re: Perl Substitution

["Mark F. Murphy" <ma...@tyrell.com>]

At 7:37 PM -0400 5/1/01, Daniel F. Savarese wrote:
>I think this came up once before.  Since these are part of Perl's
>double-quoted string processing and not its regular expression
>handling, it is not currently implemented.  However, I think it
>would be entirely appropriate to add them to Perl5Substitution as
>a convenience and you should definitely give it a go.

I already did... and yes... it's in Perl5Substitution.java.

>I would
>advise against too many other additions requiring more on the
>fly parsing/interpreting (not that I can think of any at the moment)
>because it is more efficient to implement the Substitution interface and
>make it do whatever custom substitution processing you need using Java
>code.

I changed the way _parseSubs and _calSubs do a lot of String passing.

Since the original sub string is available... and the match string is 
available, I use offsets and counts into those... and use char 
arrays.  This avoids the multiple copying in the current version.

Basically extending the Vector (subs).

I added some opcodes to the vector which handle offsets to sub 
string, lower/upper case next char, lower/upper case until /E.

Also, now allow backslash for $.

I can't think of anything else the substitution string would really 
need.... but then again... I haven't looked at the latest version of 
perl to see what's been added in that area.

I've looked at the requirements for submitting changes.

Should I post a DIFF here of what I have?

mark

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