java.util.regex
Class Pattern.BackRef

java.lang.Object
  java.util.regex.Pattern.Node
      java.util.regex.Pattern.BackRef

Enclosing class:

Pattern

static class Pattern.BackRef

extends Pattern.Node

Refers to a group in the regular expression. Attempts to match whatever the group referred to last matched.

Field Summary

(package private) int	groupIndex
(package private) Pattern.Node	next

Constructor Summary

(package private)

Pattern.BackRef(int groupCount)

Method Summary

(package private) Pattern.Node	dup(boolean not)
(package private) boolean	match(Matcher matcher, int i, CharSequence seq) This method implements the classic accept node.
(package private) boolean	study(Pattern.TreeInfo info) This method is good for all zero length assertions.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

groupIndex

int groupIndex

next

Pattern.Node next

Constructor Detail

Pattern.BackRef

Pattern.BackRef(int groupCount)

Method Detail

match

boolean match(Matcher matcher,
              int i,
              CharSequence seq)

Description copied from class: Pattern.Node

This method implements the classic accept node.

Overrides:

match in class Pattern.Node

study

boolean study(Pattern.TreeInfo info)

Description copied from class: Pattern.Node

This method is good for all zero length assertions.

Overrides:

study in class Pattern.Node

dup

Pattern.Node dup(boolean not)