Open-source implementation of Desatomat and it's Extended Desátomatu Syntax. This is my effort to reverse-engineer the closed-source Desatomat tool.
This tool aims to cover the features used by the Compile Time Regular Expressions library grammer. It aims to be a drop in replacement.
To setup you need python and the lark parser
sudo apt install python3 python3-pip
pip3 install lark
git clone https://github.com/alexios-angel/desatomat.git
cd desatomat
chmod +x desatomatBasic usage:
./desatomat --input=FILENAME --output=/dev/stdout -q| Option | Description |
|---|---|
-q |
Only print errors to stdout |
--version -v |
Print version and exit |
--verbose |
Set log level to debug |
--log |
Logs level; Takes debug info warn error and critical as options |
--ll |
Output LL1 grammer. This option is ignored as it is the default. The original Desatomat uses this option. |
--q |
Create Q-grammer. This option is ignored as it is the default. The original Desatomat uses this option. |
--input |
Input grammer file. Use --input=- if you are passing grammer via stdin |
--output |
Output directory or file. If not a filename --cfg:fname is used; Default directory is the current directory |
--cfg:fname |
Filename for the output. If not specified grammer.hpp is used. |
--cfg:namespace |
C++ namespace to put the grammer in |
--cfg:guard |
C++ header guard to use #ifndef GUARDNAME #define GUARDNAME |
--cfg:grammar_name |
C++ grammar struct name |
sigma-is not supported as it is not used in CTRE. I also don't know what it does.sigma-is correctly parsed, but is ignored in this Desatomat and the set is treated as a regular set.
NAME: rule- NAME is ignored. It seems NAME is only there for debugging.