vec.ds

class RawVec {
    capacity: P_i32,
    start_pointer: P_i32,
}

func RawVec_new() -> RawVec {
    RawVec {
        capacity: 0,
        start_pointer: 0,
    }
}

func RawVec_growBy(v: RawVec, growBy: P_i32) -> P_unit {
    let next_capacity: P_i32 = v.capacity + growBy;
    let next_start_pointer: P_i32 = __malloc(next_capacity);

    __memMove(next_start_pointer, v.start_pointer, v.capacity);

    v.capacity = next_capacity;
    _free(v.start_pointer)
    v.start_pointer = next_start_pointer;
}

// TODO: This should actually be `func RawVec_store<T>(v: RawVec<T>, offset: P_i32, element: T) -> ()`
func RawVec_store(v: RawVec, offset: P_i32, element: P_i32) {
    __memStore(v.start_pointer + offset);
}

// class Vec<T> {
//     length: P_i32,
//     buffer: RawVec
// }

// func Vec_append<T>(v: Vec<T>, element: T) {
//     if (v.length == v.buffer.capacity) {
//         RawVec_growBy(buffer, v.length);
//     }
//     RawVec_store(buffer, v.length, element);
//     v.length += 1;
//     ()
// }