Creedowl/ll1-parser

LL(1) Parser

This is a toy LL(1) parser written in Python. It can now eliminate the left recursion, calculate First set and Follow set, create analysis table and generate analysis progress.

How to use

pip install -r requirement.txt
python parser.py

The grammar is in in.txt, you can change it and don't forget to change the input string in parser.py

Example

Reference

lr1-parser