lua-users home
lua-l archive

[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index] [Thread Index] 

On 12/06/2022 14:29, Domingo Alvarez Duarte wrote:

Hello Lorenzo !


Hello Domingo!


You've not LPeg but thereis the "re" module where you can write in a
kind of EBNF, I would recomend https://github.com/edubart/lpegrex the
author has done a parser for Lua
https://github.com/edubart/lpegrex/blob/main/parsers/lua.lua and C11
https://github.com/edubart/lpegrex/blob/main/parsers/c11.lua that really
parses real C projects like sqlite3 amalgamation.

For manipulating C structures then there is a somehow pure Luajit
implementation of LPeg https://github.com/sacek/LPegLJ .

An also in pure Lua https://github.com/pygy/LuLPeg .

Then there is tools to analyze/visualize grammars
https://www.bottlecaps.de/rr/ui and https://www.bottlecaps.de/convert/
and it's parser generator https://www.bottlecaps.de/rex/ in several
languages.

For easy iterative testing grammars there is several online playgrounds:

- cpp-peglib https://yhirose.github.io/cpp-peglib/

- peggy https://peggyjs.org/online.html

- pest https://pest.rs/

I'm looking at this lightweight project that's promising too
https://github.com/ChrisHixon/chpeg/ .

Then there is this ones
https://en.wikipedia.org/wiki/Comparison_of_parser_generators
From a superficial POV it seems most of your links are about classic parsing based on grammars expressed in a formal way, possibly using PEGs.
As I said, I can't manage modifying/creating grammars to do what I want reliably and I don't have time to learn how to do that or to use PEGs. And neither can I afford to delve into huge codebases to extract a useful snippet.
However, thanks for the effort and the links. Maybe some will prove useful for my use case.
Anyway, should I find the time to learn PEGs (I tried years ago, just to be able to use LPEG, but the learning curve vs my free time proved too steep - maybe in another life :-), those references look very interesting. 


Cheers !



Cheers!