nff.rs

A program that calculates the nullable, first, and follow sets from a specified grammar

Installation and Usage

Github

git clone https://github.com/rmsthebest/nullable-first-follow
cd upside-down
cargo run --release <path to grammar file>

Cargo

cargo install nff
nff <path to grammar file>

Grammar

nff only supports one format of grammar Nonterminals are one uppercase character Terminals are one lowercase character Null is 0

A -> B a
A -> 0
B -> A b