Decaf Compiler

Project for Compiler course at SBU

A short description of the Decaf

Decaf is a simple small object-oriented language similar to C/C++/Java languages, so it isn't hard to understand.

This program has been simplified for easier implementation, you can see project description in ProjcetDcsp pdf file and learn more about decaf in pdf file.

Technologies

• JFlex : lexer/scanner generator
• CUP : LALR parser generator
• SPIM : simulator for the MIPS R2000/R3000 RISC computers

Requirements

sudo apt-get install -y spim

Walkthrough

First add java-cup-runtime-11b-20160615.jar to project.

Project Structure -> Modules -> Compile -> Dependencies -> Add...

Compile JFlex

If you have installed JFlex on your OS:

jflex src/scanner/Scanner.flex

or you can use jar file in the project

cd src/scanner/
java -jar ../../libraries/jflex-1.8.2.jar Scanner.flex

then add Scanner.java to scanner package by writing package scanner; on the first line of Scanner.java file.

Compile CUP

cd src/parser/
java -jar ../../libraries/java-cup-11b.jar parser.cup

Run tests

manually

Change tests/manual/test.d file to whatever decaf code you want then run src/Compiler.main.

automatically

cd tests/
./run.sh

References

https://github.com/mhezarei/compiler