nimforum mirror - Lexim -- Regular expressions and lexer generation for Nim

I ported some Nim code to 1.6 that I wrote 7 years ago: https://github.com/Araq/lexim

Lexim is:

A pure Nim regular expression implementation that seems to be 10x slower than PCRE. It's based on optimal DFAs though and if I remember correctly that means that there are no patterns or inputs that produce exponential runtimes.

A Lexer generator that produces lexers that are close to optimal both in space and time.

Is the original reason that lexe.exe was created, still valid (slow to compile)? Or is the newly added -d:leximSkipLexe a better choice nowadays?

To answer my own question, it seems so. For ex1.nim it throws the "too many iterations" error.

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