Context-Free Grammar First & Follow Calculator

This project is a web-based tool for calculating the First and Follow sets of a context-free grammar (CFG). It takes user input in the form of a CFG and computes these sets, showing the results with a typewriter animation.

Features

• Grammar Input: Input context-free grammar in a textarea with production rules.
• Symbols: Use buttons or shortcut keys to input symbols like →, |, and λ.
• Syntax Checking: Basic validation to check if the grammar syntax is correct.
• First & Follow Calculation: Computes the First and Follow sets using predefined rules.
• Typewriter Animation: Displays results in a typewriter style for a better user experience.

Usage

1. Enter the grammar in the text area in the format:

  S → ACB | Cbb | Ba
  A → da | BC
  B → g | λ
  C → h | λ

2. Use shortcuts to insert special symbols:

• 1 : →
• 2 : |
• 3 : λ

3. Press the Check Grammar button to calculate the First and Follow sets.

Installation

1. Clone the repository:

  git clone https://github.com/RezaTaheri01/first-follow-compiler.git

2. Open index.html in your browser.

License

This project is licensed under the MIT License.