kraken/tests/traitsTest.krak

import io;

typedef NoTraits {};

typedef Trait1 (FirstTrait) {};
typedef Trait2 (SecondTrait) {};
typedef TwoTrait (FirstTrait, SecondTrait) {};
typedef AlreadySpecilized (FirstTrait, SecondTrait) {};

template <T> void OneTwoFunc(T obj) {
    println("No Traits");
}

template <T(FirstTrait)> void OneTwoFunc(T obj) {
    println("First Trait");
}

template <T(SecondTrait)> void OneTwoFunc(T obj) {
    println("Second Trait");
}

template <T(FirstTrait, SecondTrait)> void OneTwoFunc(T obj) {
    println("Both Traits");
}
/*
template <AlreadySpecilized> void OneTwoFunc(AlreadySpecilized obj) {
    println("Already Specilized");
}
*/
//This should work for objects too!
//To test, we cycle the mapping of traits

/*
 *typedef template<T> OneTwoObj (FirstTrait) {};
 *typedef template<T(FirstTrait)> OneTwoObj (SecondTrait) {};
 *typedef template<T(SecondTrait)> OneTwoObj (FirstTrait, SecondTrait) {};
 *typedef template<T(FirstTrait, SecondTrait)> OneTwoObj {};
 *typedef template<AlreadySpecilized> OneTwoObj {
 *    void proveSpecilized() {
 *        println("I'm specilized!");
 *    }
 *};
 */

int main() {
    NoTraits a;
    Trait1 b;
    Trait2 c;
    TwoTrait d;
    AlreadySpecilized e;
    
    OneTwoFunc<NoTraits>(a);
    OneTwoFunc<Trait1>(b);
    OneTwoFunc<Trait2>(c);
    OneTwoFunc<TwoTrait>(d);
//    OneTwoFunc<AlreadySpecilized>(e);
   
    println();

/*
 *    OneTwoObj<NoTraits> alpha;
 *    OneTwoObj<Trait1> beta;
 *    OneTwoObj<Trait2> gamma;
 *    OneTwoObj<TwoTrait> delta;
 *    OneTwoObj<AlreadySpecilized> epsilon;
 *
 *    OneTwoFunc<OneTwoObj<NoTraits>>(alpha);
 *    OneTwoFunc<OneTwoObj<Trait1>>(b);
 *    OneTwoFunc<OneTwoObj<Trait2>>(c);
 *    OneTwoFunc<OneTwoObj<TwoTrait>>(d);
 *
 *    //We can't pass along our inner part, so let's just make sure that it is the right object.
 *    //epsilon.proveSpecilized();
 */

    return 0;
}