Writing spock language in javascript with sweet.js (WIP)

spock.sjs

let spec = macro {

    rule { $name:lit { $body ... } } => {
        describe($name, function () {
            $body ...
        });
    }
    
}

let def = macro {

    rule { $name:lit { $body ... } } => {
        it($name, function(done) {
            $body ...
        });
    }
    
}

let given = macro {
    
    rule { : $($body) ... } => {
        $body ... 
    }
}

let when = macro {
    
    rule { : $body ...  } => {
        $body ...
    }
}

let beforeEach = macro {

    rule { ( $done:ident ) { $body ... } } => {
        beforeEach(function ($done) {
            $body ...
        });
    }
}

let afterEach = macro {

    rule { ( $done:ident ) { $body ... } } => {
        afterEach(function ($done) {
            $body ...
        });
    }
}


let then = macro {
    
    rule { : $($assertion ... ;)  } => {
        $(expect($assertion ...)).to.equal(true);
    }
}

export describe;
export it;
export beforeEach;
export afterEach;

spec 'As a user I would like to add numbers' {

    def 'my test' {
    
        given: 
            var a = 1,
                b = 2;

        when:
            var c = a + b;

        then: 
            c == 3;
            a == 1;
        
    }
    
}