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Re: [OT] Java Lexical Analyzer?

• To: "Thomas B. Passin" <tpassin@c...>
• Subject: Re: [OT] Java Lexical Analyzer?
• From: "William F. Gilreath" <will@w...>
• Date: Fri, 23 Aug 2002 21:07:47 -0600
• Cc: xml-dev@l...
• In-reply-to: <003f01c24b18$b7450f90$fe193044@tbp1>
• References: <8BD7226E07DDFF49AF5EF4030ACE0B7E06621FAD@r...><3D668ABA.50031594@m...><003f01c24b18$b7450f90$fe193044@tbp1>
• Reply-to: will@w...

Hello,

I don't know if its been mentioned, but Andrew Appel uses JLex in his "Modern Compiler Implemented in Java"...here's the URL:

http://www.cs.princeton.edu/~appel/modern/java/JLex/

The source is one Java file, so you can tailor to your needs. Hope this helps.

Cheers!

*********** REPLY SEPARATOR  ***********

On 8/23/2002 at 10:48 PM Thomas B. Passin wrote:

>Roger,
>
>I just found jbison using Google:
>
>http://ftp.unicamp.br/pub/languages/java/jbison/
>
>It is still a C program but emits java -
>
>" The jb system allows Java (tm) parsers to be generated using the Gnu
>Bison
>parser generator system. The parser is written using the standard Bison
>language, but the action parts are written in Java. Jb takes the mixed
>C-Java file output by Bison and scans it to extract the parse tables,
>constants, and actions (in Java). Jb then scans various template files
>specified by the user and inserts the extracted information at specified
>points in the templates.
>
>In addition to generating parsers, jb provides three methods of generating
>corresponding lexers.
>
>  1. Flex -- the jb system (starting with version 3.0) can also take lexers
>     generated using the Gnu flex generator and translate them to execute
>in
>     Java; this is accomplished with a program called jf that operates in a
>     manner analogous to jb.
>
>  2. yylex.generic -- A generic ad-hoc lexer that can be modified to
>produce
>     lexers for typical programming languages.
>
>  3. yytokenizer.generic -- A wrapper for the Java StreamTokenizer Class."
>
>
>> Thanks Dare.  I looked (very) briefly at JavaCC.  It may in fact be very
>> powerful, but I really like the simplicity of the lex notion of listing
>> regex/action rule pairs, which are then automatically turned into a
>> lexical analyzer.  JavaCC doesn't follow this approach (that I can
>> tell).  It seems to be more procedural-oriented.  I will check out
>> ANTLR.  Thanks!  /Roger
>>
>>
>
>Perhaps this will do your job.
>
>Regards,
>
>Tom P
>
>
>
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• References:
  • RE: [OT] Java Lexical Analyzer?
    • From: "Dare Obasanjo" <dareo@m...>
  • Re: [OT] Java Lexical Analyzer?
    • From: "Roger L. Costello" <costello@m...>
  • Re: [OT] Java Lexical Analyzer?
    • From: "Thomas B. Passin" <tpassin@c...>

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