Package gnu.regexp
Class REMatchEnumeration
java.lang.Object
gnu.regexp.REMatchEnumeration
- All Implemented Interfaces:
Serializable
,Enumeration
An REMatchEnumeration enumerates regular expression matches over a
given input text. You obtain a reference to an enumeration using
the
getMatchEnumeration()
methods on an instance of
RE.
REMatchEnumeration does lazy computation; that is, it will not
search for a match until it needs to. If you'd rather just get all
the matches at once in a big array, use the
getAllMatches()
methods on RE. However, using an
enumeration can help speed performance when the entire text does
not need to be searched immediately.
The enumerated type is especially useful when searching on a Reader
or InputStream, because the InputStream read position cannot be
guaranteed after calling getMatch()
(see the
description of that method for an explanation of why). Enumeration
also saves a lot of overhead required when calling
getMatch()
multiple times.
- Author:
- Wes Biggs
- See Also:
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionboolean
Returns true if there are more matches in the input text.boolean
Returns true if there are more matches in the input text.boolean
hasMoreMatches
(StringBuffer buffer) Returns true if there are more matches in the input text.Returns the next match in the input text.Returns the next match in the input text.Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface java.util.Enumeration
asIterator
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Constructor Details
-
REMatchEnumeration
REMatchEnumeration(RE expr, CharIndexed input, int index, int eflags)
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Method Details
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hasMoreElements
public boolean hasMoreElements()Returns true if there are more matches in the input text.- Specified by:
hasMoreElements
in interfaceEnumeration
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hasMoreMatches
public boolean hasMoreMatches()Returns true if there are more matches in the input text. -
hasMoreMatches
Returns true if there are more matches in the input text. Saves the text leading up to the match (or to the end of the input) in the specified buffer. -
nextElement
Returns the next match in the input text.- Specified by:
nextElement
in interfaceEnumeration
- Throws:
NoSuchElementException
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nextMatch
Returns the next match in the input text. This method is provided for convenience to avoid having to explicitly cast the return value to class REMatch.- Throws:
NoSuchElementException
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