StringBuilder version of java.util.regex.Matcher.append*

[Jeremy Manson]

I'm told that the diff didn't make it.  I've put it in a Google drive
folder...

https://drive.google.com/file/d/0B_GaXa6O4K5LY3Y0aHpranM3aEU/edit?usp=sharing

Jeremy


On Wed, Mar 19, 2014 at 10:41 AM, Jeremy Manson <jeremymanson at google.com>wrote:

> Hi folks,
>
> We've had this internally for a while, and I keep meaning to bring it up
> here.  The Matcher class has a few public methods that take StringBuffers,
> and we've found it useful to add similar versions that take StringBuilders.
>
> It has two benefits:
>
> - Users don't have to convert from one to the other when they want to use
> the method in question.  The symmetry is nice.
>
> - The StringBuilder variants are faster (if lock optimizations don't kick
> in, which happens in the interpreter and the client compiler).  For
> interpreted / client-compiled code, we saw something like a 25% speedup on
> String.replaceAll(), which calls into this code.
>
> Any interest?  Diff attached.
>
> Jeremy
>