[kaffe] Bug report (java.io.StreamTokenizer)

Ito Kazumitsu ito.kazumitsu at hitachi-cable.co.jp
Mon Jun 30 17:10:01 PDT 2003


In message "Re: [kaffe] Bug report (java.io.StreamTokenizer)"
    on 03/06/30, Hermanni Hyytiälä <hemppah at cc.jyu.fi> writes:

> > (1) Kaffe's java.io.StreamTokenizer.java has this comment:
> > 
> >         /* Contrary to the description in JLS 1.ed,
> >            C & C++ comments seem to be checked
> >            before other comments. That actually
> >            make sense, since the default comment
> >            character is '/'.
> >         */
> Do you know what this comment is based on?

Dalibor answered about this.

> > (2) Comment characters must be checked before alphabetic characters
> >     and Sun's java.io.StreamTokenizer seems to do so.  Otherwise,
> >     NBIO you mentioned cannot run properly.

> Hm, have you tested and if so how? Or does literature mentions about
> this? After a quick thought, I don't see any problem in the lexical
> order which is defined in nextToken-method of java.io.StreamTokenizer
> (JLS, 1st edition).

As I said before,  the program from NBIO defines '#' not only as
a comment character but also as a word character.  So if
java.io.StreamTokenizer follows the rule of JLS 1st ed.,
as kaffe's does,  '#' is treated as the begining of a word
before it is treated as the begining of a comment.

The fact that Sun's treats '#' as the begining of a comment
shows that Sun's java.io.StreamTokenizer does not respect
the rule of JLS 1st ed.

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