Saft

Saft is my custom programming language. The syntax has a high resemblence to rust and some concepts have carried over, such as block expressions and control flow expressions, and tail expressions being returned automatically.

State of the language

Currently saft has a lexer, parser, ir (with lowerer) and a bytecode back-end, which both compiles and interprets bytecode. I have added type annotations, but type inference and checking has not been implemented yet, so types do nothing at the moment.

Examples

Below is an example of the fibonacci function, implemented recursively.

fn fib(i: int) -> int {
    if i < 2 {
        i
    } else {
        fib(i-1) + fib(i-2)
    }
}

Here is the fibonacci function implemented with a loop.

fn fib(n: int) -> int {
    if n == 0 { return 0; };

    let a = 0;
    let b = 1;

    loop {
        if n == 1 {
            break b;
        };

        let c = a + b;
        a = b;
        b = c;

        n = n - 1;
    }
}