#import "YSArray.h"
#include <string.h>
#include <stdio.h>

@implementation YSArray
-(id) init {
    self = [super init];
    array = NULL;
    return self;
}

-(void) addObject: (id) theObject {
    //printf("%s\n", "YSArray: addObject");

    if (array == NULL) {
        //printf("%s\n", "before malloc");
        array = malloc(sizeof(id));

        if (array == NULL) {
            //printf("%s\n", "addObject: malloc failed.");
            return;
        }

        //printf("%s\n", "after malloc");
    } else {
        //printf("%s\n", "before realloc");
        array = realloc(array, count * sizeof(id));

        if (array == NULL) {
            //printf("%s\n", "addObject: realloc failed.");
            return;
        }
    }

    array[count++] = theObject;
    //printf("%s\n", "YSArray: object added.");
}

-(void) removeObject: (unsigned int) index {
    if (count == 0 || count == 1) {
        array[0] = NULL;
        return;
    }

    if (index >= count) {
        return;
    }

    if (index == count - 1) {
        array[count - 1] = NULL;
    }

    //hope count > index;
    memcpy(&array[index], &array[index + 1], (count - index) * sizeof(id));
}
@end