Yate
Public Member Functions
ListIterator Class Reference

Class used to iterate the items of a list. More...

#include <yateclass.h>

List of all members.

Public Member Functions

 ListIterator (ObjList &list, int offset=0)
 ListIterator (HashList &list, int offset=0)
 ~ListIterator ()
unsigned int length () const
void clear ()
void assign (ObjList &list, int offset=0)
void assign (HashList &list, int offset=0)
GenObjectget (unsigned int index) const
GenObjectget ()
bool eof () const
void reset ()

Detailed Description

Class used to iterate the items of a list.

An ObjList or HashList iterator that can be used even when list elements are changed while iterating. Note that it will not detect that an item was removed and another with the same address was inserted back in list.


Constructor & Destructor Documentation

ListIterator ( ObjList list,
int  offset = 0 
)

Constructor used to iterate through an ObjList. The image of the list is frozen at the time the constructor executes

Parameters:
listList to get the objects from
offsetFirst list element to iterate, will wrap around
ListIterator ( HashList list,
int  offset = 0 
)

Constructor used to iterate through a HashList. The image of the list is frozen at the time the constructor executes

Parameters:
listList to get the objects from
offsetFirst list element to iterate, will wrap around

Destructor - frees the allocated memory


Member Function Documentation

void assign ( ObjList list,
int  offset = 0 
)

Assign an ObjList to the iterator, build a frozen image of the list

Parameters:
listList to get the objects from
offsetFirst list element to iterate, will wrap around
void assign ( HashList list,
int  offset = 0 
)

Assign a HashList to the iterator, build a frozen image of the list

Parameters:
listList to get the objects from
offsetFirst list element to iterate, will wrap around
void clear ( )

Clear the iterator, disconnect from any list

bool eof ( ) const [inline]

Check if the current pointer is past the end of the list

Returns:
True if there are no more entries left
GenObject* get ( unsigned int  index) const

Get an arbitrary element in the iterator's list image. Items that were removed from list or are not alive are not returned.

Parameters:
indexPosition to get the item from
Returns:
Pointer to the list item or NULL if out of range or item removed
GenObject* get ( )

Get the current element and advance the current index. Items that were removed from list or are not alive are skipped over. An example of typical usage:

 ListIterator iter(list);
 while (GenObject* obj = iter.get()) {
     do_something_with(obj);
 }
 
Returns:
Pointer to a list item or NULL if advanced past end (eof)
unsigned int length ( ) const [inline]

Get the number of elements in the list

Returns:
Count of items in the internal list
void reset ( ) [inline]

Reset the iterator index to the first position in the list


The documentation for this class was generated from the following file: