#interface "Queue.h"

Queue* createSingleLinkedQueue(struct Context* context) {
    struct Queue* queue = new Queue(); // Allocate Queue interface
    struct SingleLinkedQueue* singleLinkedQueue = new SingleLinkedQueue(); // Allocate Queue implement
    queue->queue = (union Data*)singleLinkedQueue;
    singleLinkedQueue->top  = new Element();
    singleLinkedQueue->last = singleLinkedQueue->top;
    queue->clear = C_clearSingleLinkedQueue;
    queue->put  = C_putSingleLinkedQueue;
    queue->take  = C_takeSingleLinkedQueue;
    queue->isEmpty = C_isEmptySingleLinkedQueue;
    return queue;
}

__code clearSingleLinkedQueue(struct SingleLinkedQueue* queue, __code next(...)) {
    queue->top = NULL;
    goto next(...);
}

__code putSingleLinkedQueue(struct SingleLinkedQueue* queue, union Data* data, __code next(...)) {
    Element* element = new Element();
    element->data = data;
    element->next = NULL;
    queue->last->next  = element;
    queue->last = element;
    goto next(...);
}

.....