On Mar 14, 2018, at 6:11 AM, Peter Levart <peter.lev...@gmail.com> wrote: > > Pattern.compile(string) > > Now if 'string' above is a constant, '~ string' could be a constant too. > Combined with raw string literals, Pattern constants could be very compact. > > > What do you think?
There's no need to introduce syntax in order to gain constant folding. It's enough to ensure that Pattern.compiler(constant) reduces to the ldc of a dynamic constant. We are experimenting on such ideas here: http://hg.openjdk.java.net/amber/amber/shortlog/condy-folding <http://hg.openjdk.java.net/amber/amber/shortlog/condy-folding> (This is very vaguely similar to constexpr in C++, but less static. It's early days, but enough to show that syntax isn't necessary.) — John
