PWN to C Transpiler

About project

The objective of this project was to develop a transpiler which translates code written in our own programming language called PWN into equivalent code in the widely recognized C. Whole thing is wrapped in user friendly interface allowing to load .pwn files and translate them into C.

Run

After cloning repo and installing java add antlr to classpath:

Linux:

export CLASSPATH=".:# PATH TO PROJECT #/src/antlr/antlr-4.2.2-complete.jar:$CLASSPATH"

Windows:

SET CLASSPATH=.;# PATH TO PROJECT #/src/antlr/antlr4-complete.jar;%CLASSPATH%

Then, in src directory:

javac Main.java

and finally

java Main

Technologies used

The whole project is written in Java and based on the ANTLR4 parser generator, the GUI was created in Swing.

PWN programming language

PWN language draws from Python and C, it has readability of the first one but takes some ideas straight from the second one. Example of code written in pwn:

func add(a: int, b: int) -> int {
    c: int = a + b;
    return c;
}

a: string = "test";
b: float = 777.123;

arr: int[10];

for(i: int in 0..10) {
    arr[i] = add(i, 5);
}

j: int = 5;

while(j >= 0) {
    j--;
}

More examples as well as examples with errors to showcase the error handler are available in the examples directory

Project structure

    src
     ├── antlr
     |     ├── PWN.g4                        # PWN language grammar
     |     ├── PNW.interp
     |     ├── PWN.tokens                    
     |     ├── PWNBaseListener.java
     |     ├── PWNBaseVisitor.java
     |     ├── PWNLexer.interp
     |     ├── PWNLexer.java
     |     ├── PWNLexer.tokens
     |     ├── PWNListener.java
     |     ├── PWNParser.java
     |     ├── PWNVisitor.java
     |     └── antlr-4.12.0-complete.jar    # antlr java archive
     ├── Main.java                          # gui
     ├── PWNConverter.java                  # the actual converter logic class
     ├── PWNErrorListener.java              # custom syntax error handler
     ├── Value.java                         # helper class used to evaluate expressions