FW: [antlr-interest] got new "language implementation" lectur e au dio up

[Jim O'Connor]

Hi Matt,
  It has many features that my Java analysis tool needs.  It parses a Java
file (Grammar).  It creates a symbol table (resolves
types/variables/methods).  With the Antlr grammar, I can construct an AST
for any number of purposes.  The JavaSrc code creates HTML pages similar to
JavaDoc.  The HTML creation is a nice sidelight to view the initial work but
may not be useful for all purposes.

  I would like to incorporate the symbol table information with the AST
information to create a local database for each java file, class or other
"destinct module", whatever that means.   The AST allows navigation throught
the parse tree but doesn't tell me (quickly)  where the class ACCOUNT is
used throughout the file.  Where is the method ACCOUNT.balance() used?  

  My current strategy is to 

A. parse lots of java files
B.  save off XML representations of each AST
c. gather the symbol table information
D. resolve type/variable/methods
E. ?write out the symbol table information?
F. read in an AST
	1. Match the AST with Symbol table information 
	2. Create a sorted "local database" for each AST 
G. Re-work names/coarse grained items for easy lookup.


The "click the links" javadoc approach is a valuable tool.  My goal is a
more interactive fine grained query at fast speeds.  With a database that
can support these queries, I will be able to solve the year 10,000 problem
in Java code.  Where are all date fields that use just four characters to
represent a year?

Jim

P.S. If you can tell me how "smart" IDEs work, I'm all ears.  



-----Original Message-----
From: Matt Benson [mailto:gudnabrsam at yahoo.com]
Sent: Wednesday, February 19, 2003 3:51 PM
To: antlr-interest at yahoogroups.com
Subject: Re: FW: [antlr-interest] got new "language implementation"
lecture au dio up


I have never heard of this thing until now.  This is
right along the lines of what I have been looking
for/working with.  For what purpose are you wanting to
use this code, Jim?


--- Jim O'Connor <Jim.OConnor at microfocus.com> wrote:
> 
> Hi Terence,
>   I've been through the "JavaSrc"
> http://home.austin.rr.com/kjohnston/javasrc.htm
> implementation of a symbol
> table. It originated with the four part series of
> articles
>
http://developer.java.sun.com/developer/technicalArticles/Parser/SeriesPt4/.
> I assume you are familiar with it. ;)
> 
>   I have two questions that come from different
> "ends".  The first is the
> step-by-step reasoning.  Where should I jump in to
> define objects that
> contain the necessary information? (example,
> JavaToken, ClassDef, etc...).
> The "other end" is a consideration of intermediate
> forms.  I have a lot of
> .java files.  "JavaSrc" makes two passes saving off
> reference.txt for
> particular directories.  What is the plan with
> memory considerations?  Can
> XML be used for intermediate forms?  I have had
> little "luck" trying to
> implement/understand XTAL to make it effective.
> 
>   Another question.  What about imports?  Jar files?
>  Can introspection be
> used?
> 
> Jim
> 
> 
>   
> 
> 
> 
> 
> -----Original Message-----
> From: Terence Parr [mailto:parrt at jguru.com]
> Sent: Tuesday, February 18, 2003 1:47 PM
> To: antlr-interest at yahoogroups.com
> Subject: Re: [antlr-interest] got new "language
> implementation" lecture
> audio up
> 
> 
> 
> On Tuesday, February 18, 2003, at 10:42 AM, Matt
> Benson wrote:
> 
> > Just curious... when do symbol tables come up? 
> and
> > can TreeParsers be used in any direct/helpful way
> to
> > generate them?
> 
> Hi Matt,
> 
> I was going to do sym tabs tomorrow, but must do GC
> real quick and then 
> get the folks started on ANTLR itself.  Plus, I want
> to think more 
> about sym tab stuff before presenting.  Now is the
> time to tell me 
> precisely what you want to learn about in that
> regard! ;)
> 
> Ter
> --
> Co-founder, http://www.jguru.com
> Creator, ANTLR Parser Generator:
> http://www.antlr.org
> Lecturer in Comp. Sci., University of San Francisco
> 
> 
>  
> 
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> 
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