Also https://github.com/rust-lang-nursery/regex, which is the process of possibly being standardized either in the Rust stdlib or as a fully supported crate (library). That crate is based on https://github.com/google/re2 that is written in C++. Both could be used for implementation ideas.
On Mon, Jan 4, 2016 at 9:52 AM, Vincent Esche via swift-evolution < [email protected]> wrote: > There is actually a Rust crate doing exactly that: > https://github.com/jneem/regex-dfa > Rust however has powerful compile-time macros, enabling this, which Swift > doesn’t (yet?). > > On 04 Jan 2016, at 02:53, Austin Zheng via swift-evolution < > [email protected]> wrote: > > +1 on first-class regex support/pattern matching on regex patterns. > > There was a thread a while ago discussing compile-time code generation, > and if I recall correctly one of the stated use cases was > 'compiling'/'building' (don't know the real terminology) regex literals at > compile-time. Is there a bigger overall vision for this sort of feature, or > would it be better to just focus on better regex support? > > Best, > Austin > > On Sun, Jan 3, 2016 at 1:35 PM, Chris Lattner via swift-evolution < > [email protected]> wrote: > >> On Jan 1, 2016, at 4:44 PM, John Joyce via swift-evolution < >> [email protected]> wrote: >> >> It is also probably worth burning first-class language support for regexes. >> This would allow specifying variable captures inline in the pattern, would >> allow flexible syntax for defining regexes, support powerful extensions to >> the base regex model (e.g. Perl 6 style), and would provide better >> compile-time checking and error recovery for mistakes. >> >> -Chris >> >> I know this is an old thread already, but this sure would be one of the >> major breakout pieces of functionality. >> If Swift had native regular expressions, without all the noise you see in >> the Objective-C API that exposes ICU regular expressions, the adoption rate >> would be huge. >> If they were *truly* native, as in somebody sat down and built an NFA (or >> one of the fancier approaches that mixes with DFA) state machine, Swift's >> best-in-class Unicode support would and could result in amazing things. >> It'd boost the scripting use of Swift tremendously and seal the deal as a >> server side language. >> >> >> Totally agreed. switch on a string with a bunch of regexes being matched >> should turn into a parallel state machine, just like a lexer :-) >> >> -Chris >> >> >> _______________________________________________ >> swift-evolution mailing list >> [email protected] >> https://lists.swift.org/mailman/listinfo/swift-evolution >> >> > _______________________________________________ > swift-evolution mailing list > [email protected] > https://lists.swift.org/mailman/listinfo/swift-evolution > > > > _______________________________________________ > swift-evolution mailing list > [email protected] > https://lists.swift.org/mailman/listinfo/swift-evolution > > -- Trent Nadeau
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