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Date: Thu, 27 Jul 2006 18:36:29 +0800
From: Spark Shen <smallsmallorgan@gmail.com>
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To: harmony-dev@incubator.apache.org
Subject: Re: [classlib][regex] Is this a issue of
 java.util.regex.Matcher.region(int,
 int);
References: <44C83943.70305@gmail.com> <44C83D77.6090705@gmail.com>
 <8ce6aa550607270258r4c66997fk6181068b84ee5a81@mail.gmail.com>
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Nikolay Kuznetsov =E5=86=99=E9=81=93:
> Hello Spark Shen,
>
>> It seems that Matcher.region(int, int) will not have any effects when
>> called. This can be demonstrated by the following test case
>
> there is an issue quite similar to one you have raised filled by Richard:
> http://issues.apache.org/jira/browse/HARMONY-759
>
> I'll try to provide a fix today, thanks for reminding.
>
>> BTW, there are other issues about java.util.regex. If necessary, can we
>> disscuss all these issues case by case.
>
> Surely, we can discuss issues if needed, but if smth just does not
> work, please fill an issue in JIRA, I'm looking after regex issues. If
> you need some problems to fix urgently, let me know separately.
>
Thank you very much, do I need to raise a new JIRA for this issue? Using=20
the test case I give,
I debug into the code. The calling stack is as follow:

SequenceSet.indexOf(CharSequence, int)
SequenceSet.find(int, CharSequence, MatchResultImpl) line: 69
SingleSet.find(int, CharSequence, MatchResultImpl) line: 52
Matcher.findAt(int) line: 317
Matcher.find(int) line: 304
Matcher.find() line: 342

in indexOf line 115 : int last =3D string.charAt(charCount - 1); the value =

of string is "c".
I figure out this string variable is a member of SequenceSet. Since the=20
region in my test case setting is (0, 2),
I am not sure whether the string value here should be smth like "a".

Since SequenceSet is construct when Pattern.complile() and this members=20
value of the constructed SequenceSet
seems never change ever since, does it make sense that when region is=20
called, value of SequeceSet should also be updated?

Hope this guess would be helpful. :-)

Correct me if I am wrong.

Best regards
> Yours sincerely,
> Nik.
>
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>


--=20
Spark Shen
China Software Development Lab, IBM


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