A programming language that I built based on azrg's Eldiro blog posts. The core design and architecture are all practically identical to Eldiro, hence the name of the project: nakala (Punjabi for mimic). If you haven't read through his blog posts, I highly recommend you do because it is an unmatched learning resource.

Why make nakala?§

I was so inspired by his blog posts that I have decided to continue the implementation that I made while reading his posts.

The most notable of which being:

  • Creating a runtime engine that computes the parsed HIR representation
  • Adding many more language features (such as variable references, code blocks, and string literals)
  • CLI Runtime/REPL.


As nakala is in its very early stages, the language does not have many features. However, it does have:

Binary Expressions§

Prefix, Infix, and Postfix binary expression support

1 + 4 * 10 + -4

200 + (5 * (100 + 4))


You can have comments placed within expressions

+ 123 # add a medium number
+ 5512312 # add a large number

Variable Declaration and References§

let a = 200 + (5 * (100 + 4))

let b = a

Code Blocks§

let x = {
  # first let's declare a variable
  let temp = 100

  # now lets create another variable
  let temp2 = 500

  # add them together. The final statement in a block is the value returned
  temp + temp2


let x = "Hello, World!"

.nak File Format§

You can store a nakala program in a .nak file and run it using the CLI tool. For example:

# my_program.nak

let x = 100

let y = x + 5

x + y

You can then run this program with the following command

$ nakala my_program.nak


Project Layout§

There are a fair amount of moving parts, and just like azrg, I have also split up all the components into separate crates. Below is a dependency graph to visualize how it all links together: