Scala-Compiler

This project utilizes scala to lex and parse the WHILE language and then compiling the language into Java Byte Code using the Jasmin compiler.

Getting Started

This project will require to have ammonite installed on your machine. You can find the installation instructions here.

Prerequisites

You will need to have the following installed on your machine:

• Scala 2.13.7 (NOT scala 3)
• Ammonite 2.4.0
• Jasmin Jar File (included in the repo)
• some WHILE programs (included in the repo, can write your own following the syntax :))
• Depending on your OS, you may need to change beginning prelude variable from ldc 10 for Linux/MacOS to ldc 13 for Windows (this has been commented in the code in compiler.sc)

Commands to run the project

Compiler

To run the project directly from the command line, you can run the following commands:

amm compiler.sc run "WHILE_FILE_NAME.while"

To compile the WHILE program into a .j file, you can run the following commands:

amm compiler.sc main "WHILE_FILE_NAME.while"

You can then run the .j file using the Jasmin compiler:

java -jar jasmin.jar "WHILE_FILE_NAME.j"

Parser

To parse a WHILE program at command line, you can run the following commands:

amm parser.sc "WHILE_FILE_NAME.while"

Lexer

To lex a WHILE program at command line, you can run the following commands:

amm lexer.sc "WHILE_FILE_NAME.while"