Kronk - A Really Dumb First Language

I don't know why I named it Kronk, but I did.

Kronk is a crazy ruled dynamically typed interpretted language with currently minimal feature support. It's pretty much just my experimental repo for playing around with parsing and executing language stuff

Current Features

Kronk currently supports:

• Literals including Number, String, Bool and Nil
• List literals with indexing :D
• Basic arithmetic expressions with implicit type conversion (yippee)
• Variable assignment
• Variable reassignment, add assignment and incrementing (both ++{var} and {var}++)
• Comment ignoring :O
• Branching logic with if statements
• Looping techniques through while and for style loops
• printing and roaring
  • Note: roar is a legendary and life changing keyword that will print your message to standard out more expressively than before. Instead of ending this expression in a semicolon, if must end with a bang !

hello.kronk:

var foo = "Hello";
var bar = " World!";

roar foo + bar!

Execute using kronk hello.kronk:

$ kronk samples/hello.kronk 
HELLO WORLD!!!!

Or even cooler, here's some nicer looking features that Kronk supports:

var flag = false;

for (var i = 1; !flag; i++) {
    if (i == 50) {
        print "done!";
        var flag = true;
    } else if (i == 25) {
        print "halfway there!";
    } else {
        print i + "/50";
    }
}

The best feature by far: Error handling.

Kronk has support for tokenization and parser errors, they give helpful insight on what may be wrong in a program with syntax you don't know and docs that don't exist:

Token Error

var foo = 1;


this is all valid but $ is not

Running the kronk interpretter over this will give us the error:

token error: Unrecognized token: `$`
 -> samples/invalid_tokens.kronk:4:23 
 | this is all valid but $ is not
 | ----------------------^

Parser Error

while (var foo = false) {
    print "This file is super wrong"
};

Running kronk here will give us:

parser error: Unexpected token: `var`
 -> samples/invalid_parser.kronk:1:10 
 | while (var foo = false) {
 |        ~~~

Fixing that error gives:

parser error: Expected `;` after `This file is super wrong`
 -> samples/invalid_parser.kronk:2:35 
 |     print "This file is super wrong"
 |           ~~~~~~~~~~~~~~~~~~~~~~~~~

And fixing that one gives:

parser error: Unexpected token: `;`
 -> samples/invalid_parser.kronk:3:2 
 | };
 |  ~

lib.rs:

Core language parsing