#ifndef EXCEPTIONS_H
#define EXCEPTIONS_H

class Exception {};
class ExceptionIndexOutOfRange : Exception {};
class ExceptionMemoryNotAvailable : Exception {};
class ExceptionLinkedListAccess : Exception {};
class ExceptionEnumerationBeyondEnd : Exception {};	// thrown by next or peek when hasNext is false (regardless of enumerated data structure)
class ExceptionHashTableAccess : Exception {};		// thrown by find in HashTable if item not found; also by HashTableEnumerator for creating a HashTableEnumerator on an empty HashTable
class ExceptionAVLTreeAccess : Exception {};		// thrown by find in AVLTree if item not found; also by AVLTreeEnumerator for creating a AVLTreeEnumerator on an empty AVLTree or with an invalid order (valid orders are preorder, inorder, and postorder)

#endif // !EXCEPTIONS_H