#include <stdio.h>

#include "iadaptee.h"
#include "adaptee.h"

static long Adaptee_power(IAdaptee*, int, int);

Adaptee* Adaptee_construct(void* addr)
{
    if (addr == NULL) {
        return NULL;
    }

    Adaptee* adaptee = addr;
    adaptee->power = Adaptee_power;

    return adaptee;
}

void Adaptee_destruct(Adaptee* adaptee)
{
}

long Adaptee_power(IAdaptee* iadaptee, int base, int exp)
{
    if (exp < 0) {
        fprintf(stderr, "Do not support negative exponent.\n");
        return -1;
    }

    if (exp == 0) {
        return 1;
    }

    long sum = 1;

    while (exp--) {
        sum *= base;
    }

    return sum;
}