[antlr-interest] Re: How to parse java source code ?

[Matt Benson]

The Javadoc API is simply not enough to understand
ANTLR.  The manual available on the site is
comprehensive though difficult to understand for the
novice.  You MUST check out Terence's USF course on
Computer Languages, which is referenced through the
ANTLR site, if you want a ground-up presentation of
parsing in general with a focus on the ANTLR tool.  I
hadn't followed half the course before my
understanding of the tool grew enormously.

-Matt

--- charlweed <charlweed at yahoo.com> wrote:
> I'm afraid I must disagree with the opinion that
> ANTLR is  "easy-to-
> use" and "well documented". As to the later, the
> javadocs are not in  
> the distribution, and are not built from the
> makefile. The Javadocs 
> online are from the NEXT version, and are
> accordingly incomplete, and 
> are inaccurate for 2.7.2. And you NEED the javadocs
> because you must 
> extend the classes and write your own to  get
> anything done.
> 
> As for easy to use, perhaps ANTLR is easy compared
> to writing your 
> own from scratch, but even figuring out how to use
> the Java parser 
> example is quite difficult if you are completely new
> to ANTLR. It 
> took me almost two work days to figure out that the
> Java parser 
> example can't be used-out-of-the-box for doing what
> I ( and Suma 
> Venkatesh ) want, namely parsing Java source, then
> processing the 
> text that makes up the source. I posted a request
> for help on this 
> topic myself ( message 8888 ), and the single
> response I received 
> referred me to
> http://jazillian.com/antlr/JavaEmitter.html which
> may 
> be what both of us originally wanted. JavaEmitter is
> not a small 
> chunk of work, and could not be written without a
> thorough 
> understanding of ANTLR.
> 
> ANTLR may be great, but including some more
> user-friendly tools, ANT 
> buildfiles, and some more examples that are
> solutions to common 
> newbie problems, would make it much easier to use.
> 
> 
> 
> --- In antlr-interest at yahoogroups.com, Anthony Kong 
> <anthony.kong at u...> wrote:
> > I guess you can take a look at
> http://www.antlr.org/. It is a 
> reasonably
> > easy-to-use parser. Well documented.
> > 
> > Regards,
> > 
> > 
> > Anthony
> > 
> > -----Original Message-----
> > From: Suma Venkatesh [mailto:sumav_99 at y...]
> > Sent: Saturday, July 12, 2003 7:37 AM
> > To: antlr-interest at yahoogroups.com
> > Subject: [antlr-interest] How to parse java source
> code ?
> > 
> > 
> > Hi,
> > 
> >   Iam looking for a parser which can parse an
> input java source 
> code.I 
> > mean the parser
> > should read
> > the source code and identify the variable names
> and types.
> > 
> > Eg: Input is :
> >   import java.util.*;
> > 
> > public class HelloWorld{
> > 
> > public static void main(String args[]) {
> > 
> > String message = "Hello World";
> > int count =0;
> > 
> > 	while(count <10) {
> >              System.out.println(message);
> >              count++;
> >         }
> > 
> > }
> > 
> > Output should be :
> > 
> > Variables: type name
> >            int  count
> >            String message
> > 
> > Can ANTLR do this and if so how ??
> > 
> > PLEASE HELP ME!!
> > 
> > thanks in advance,
> > suma
> > 
> > 
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