⚙️ Parser Generator

Summary

This program generates parser's sources from file with the LL(1) grammar for some language. Project's goal is to gain more understanding of how parser generators (like ANLTR, Bison, Happy) work.

It accepts file with LL(1) written in the format that is quite close to the one used in ANLTR (.g4 files).

Usage

Run Main providing location of the grammar file as an argument via console or you may simply place it into this source file.

Input grammar format is specified here.

Examples

Example	Grammar File	Generated Sources
Calculator	calculator grammar	calculator sources
Regular Expressions	regex grammar	regex sources
Pascal	pascal grammar	pascal sources

Test

Tested using JUnit 4.

Copyright

Pavel Ponomarev, 2020 (pavponn@gmail.com)