RPAL Compiler

An RPAL (Right-reference Pure Applicative Language) Compiler implemented in Java, built as part of a Programming Languages project.

This compiler takes RPAL source code as input and produces an Abstract Syntax Tree (AST), a Standardized Tree (ST), and further generates control structures for the CSE (Control Stack Environment) Machine.

📁 Project Structure

RPAL-INTERPRETER/
├── src/
│ └── main/java/ # Source code
│ └── test/java/ # Unit test code
├── out/ # Compiled .class files
├── Makefile # For compiling and running
├── myrpal.exe # Windows executable

⚙️ How to Build and Run

Prerequisites

• Java JDK (21 or later)
• make utility

Compile the project

make

Run the interpreter on a file

make runfile FILE=path/to/input

Run with -ast/-st to print the AST/ST

make runast FILE=path/to/input
make runst FILE=path/to/input

Clean the build

make clean

🪟 Running on Windows

📦 Latest Release

For Windows users, a precompiled executable is included.**

• Version: v1.0.2
• Executable: myrpal.exe
• Release Date: June 2025
• Requirements: JDK 21+

Run

.\myrpal.exe file_name

To print AST/ST:

.\myrpal.exe -ast file_name
.\myrpal.exe -st file_name

Make sure your system has Java installed (JDK 21 or later) and myrpal.exe is in the same folder as the input file or added to your PATH.