Operation.ForceProgressIterator

java.lang.Object
- net.sf.saxon.regex.Operation.ForceProgressIterator

All Implemented Interfaces:

IntIterator

Enclosing class:

Operation
```
protected static class Operation.ForceProgressIterator
extends java.lang.Object
implements IntIterator
```
The ForceProgressIterator is used to protect against non-termination; specifically, iterators that return an infinite number of zero-length matches. After getting a certain number of zero-length matches at the same position, hasNext() returns false. (Potentially this gives problems with an expression such as (a?|b?|c?|d) that can legitimately return more than one zero-length match).

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`hasNext()`	Test whether there are any more integers in the sequence; and change the state of the iterator so a call on `IntIterator.next()` delivers the next integer.
`int`	`next()`	Return the next integer in the sequence.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - hasNext
```
public boolean hasNext()
```
    Description copied from interface: IntIterator
    
    Test whether there are any more integers in the sequence; and change the state of the iterator so a call on IntIterator.next() delivers the next integer.
    The effect of calling #hasNext() a second time without an intervening call on #next() is undefined.
    
    Specified by:
    
    hasNext in interface IntIterator
    
    Returns:
    
    true if there are more integers to come
  - next
```
public int next()
```
    Description copied from interface: IntIterator
    
    Return the next integer in the sequence. The result is undefined unless #hasNext() has been called and has returned true.
    
    Specified by:
    
    next in interface IntIterator
    
    Returns:
    
    the next integer in the sequence