#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;
}