[antlr-interest] Modifying Java Source

[Terence Parr]

hooray! how about adding a FAQ entry to the wiki? :)
Ter
On Aug 12, 2009, at 9:16 AM, Ismet Ozalp wrote:

> Thank you very much Terence I got everything working fine right now.
>
> On Mon, Aug 10, 2009 at 11:39 PM, Terence Parr <parrt at cs.usfca.edu>  
> wrote:
> do a replace not insert. get token index from '{' and '}'. label  
> those tokens.
> Ter
>
> On Aug 10, 2009, at 12:38 PM, Ismet Ozalp wrote:
>
> Thanks again Terence.
>
> Ok I believe now I getting at least something correct
>
> i replaced the
> methodBody
>    :    block
>    ;
>
> With this
>
> methodBody
>    :    {
>            TokenRewriteStream input2 = (TokenRewriteStream) input;
>            input2.insertAfter(input.index(),"throw new  
> UnsupportedOperationException();");
>        }
>    ;
>
> and now i have throw new UnsupportedOperationException(); in methods  
> but how do i delete the existing codes in the methodBody?
>
> you said ask for { } how do i do that ? how can I find indexes of  
> { } in methodBody if I can find the index of them I can use replace  
> method and everything will be good.
>
> Regards,
> Ismet
>
>
> On Mon, Aug 10, 2009 at 8:01 PM, Terence Parr <parrt at cs.usfca.edu>  
> wrote:
> go to method definition in grammar. ask for tokens { and }. context  
> is your key not simply scanning for tokens.
> T
>
> On Aug 10, 2009, at 6:27 AM, Ismet Ozalp wrote:
>
> First of all thank you all for your fast comments on the subject.
>
> Terence, after I created the tokenRewriteStream
>
> JavaLexer javaLexer = new JavaLexer(new ANTLRFileStream(file));
> TokenRewriteStream tokenRewriteStream = new  
> TokenRewriteStream(javaLexer);
>
> Are you suggesting me to find tokens between {} and replace them  
> with the tokens I want?
> In that case how can I detect class definition and inner class  
> definitions because i don't want to replace them. Maybe I am not  
> completely understanding
> your suggestion. I feel like telling the grammar skip method  
> definitions but yet i am not successful.  I am using antlr 3.1.3.  
> Also TokenRewriteStream's delete(int from, int to) seems not  
> deleting the tokens in it's token list? I am just calling  
> tokenRewriteStream.delete(10,20) and the tokens are still there?  
> Thank you very much...
>
> Regards,
> Ismet
>
>
> On Mon, Aug 10, 2009 at 8:31 AM, Terence Parr <parrt at cs.usfca.edu>  
> wrote:
> Hiya. Use the tokenrewrite stream and Java.g combo. add actions to  
> replace between { } with new action. :)
> Ter
> On Aug 9, 2009, at 6:18 PM, Ismet Ozalp wrote:
>
> Hello everybody,
>
> I am a newbie; I am trying to modify java sources. What I am trying  
> to do is
>
> clear the codes in the methods and change them with one line of code
>
> example method
>
>    public void delete(T t) {
>        PersistenceManager pm = PMF.get().getPersistenceManager();
>
>        try {
>            pm.deletePersistent(t);
>
>        } finally {
>            pm.close();
>        }
>
>    }
>
> changed method
>
>  public void delete(T t) {
>    throw new UnsupportedOperationException();
>  }
>
> So i need to modify the grammar some how to do this for methods in  
> the source file
> currently I am trying to do something with http://www.antlr.org/grammar/1152141644268/Java.g
> which is written by Terence Parr. But I am a little bit lost, if  
> anybody can point me to the right direction
> where I can find more information or examples about how to achieve  
> this, it would be great....
>
> Thank you very much
> Ismet
>
>
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