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Introduction

Overview​

Swirl is a statically-typed, LLVM-based systems programming language.

Kickstart​

The main function is the entry-point of a Swirl program.

fn main(): i32 {  // the return type can be omitted as the type inference system can infer it
    return 0;
}

Variable Declarations​

Variables can either be declared with let or var, the former doesn't allow reassignment and enforces in-place initialization, the latter does allow it.

let constant = 43;
let anothere_const: i8;  // error: initialization required
    
var my_var = 39;
my_var = 49;  // can be reassigned

Initialization Semantics: when a variable declaration is left uninitialized, it is automatically zero-initialized. If you do not want that to happen, initialize it with the undefined keyword.

var uninitialized: i16 = undefined;

Conditions​

if a == b || c == d && e != f {
    ...
}

elif a == c {
    ...
}

else {
    ...
}

While Loop​

while e != f {
    if e == g {
        break;
    } else {
        continue;
    }
}

Stay informed​