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Regex used to offer a regex!() macro that did compile-time compilation, but this was removed a while back as it was too much of a maintenance burden and was get
by lilyball 4y ago
Regex used to offer a regex!() macro that did compile-time compilation, but this was removed a while back as it was too much of a maintenance burden and was getting in the way of performance optimization.
- mcguire 4y agoWell, there we go, then. Nobody wants to do the work.
- lilyball 4y agoIIRC it required basically two separate implementations of the data structures, one that could be constructed at compile-time and was less efficient than the one that could be built at runtime. And the need to support both was becoming a problem. I feel like there should be a middle ground here, a macro that validates at compile-time but still constructs at runtime. Hopefully the parser could still be shared between the macro and the runtime to ensure the macro can't get out of sync.