This project is a result of learning the innards of compilers. Among other compiler books that I learned from, this was the most influential, especially in making this project: Writing an Interpreter In Go.

To use the Monna interpreter, simply run go run main.go in the project directory.To get an executable, run go build in the project directory.

let x = 5;

return 5; 
return false;

if (x < y) { x }

if (x > y) { y } else { x }

fn(x, y) { x + y; }

"Hello World"

• len(): Returns the number of characters in a string.

len("Dexter's Laboratory");
19

• puts(): Prints the given arguments to STDOUT. It return a null. It only cares about printing not returning a value.

puts("Sugar, spice, and everything nice!");
Sugar, spice, and everything nice!

The Monna programming language also responds accordingly to errors: