Yate
ListIterator Class Reference

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

#include <yateclass.h>

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() [1/2]

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() [2/2]

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

◆ ~ListIterator()

Destructor - frees the allocated memory

Member Function Documentation

◆ assign() [1/2]

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

◆ assign() [2/2]

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

◆ clear()

void clear ( )

Clear the iterator, disconnect from any list

◆ eof()

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

◆ get() [1/2]

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)

◆ get() [2/2]

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

◆ length()

unsigned int length ( ) const
inline

Get the number of elements in the list

Returns
Count of items in the internal list

◆ reset()

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: