I am in the process of rewriting much of Jasper, and am using an error handling mechanism very similar in idea to the one you just proposed. The new jasper would alos support JSR45, which is an interface for source mapping. The error handler (and other compiler plugins) can be configured with a configuration file.
Since the compiler is still in the early implementation stage, I'm open to any suggestions/requirements that you may have, from IDE integration point of view. Thanks. > Date: Tue, 12 Feb 2002 13:50:07 +0100 > From: Martin Kahr <[EMAIL PROTECTED]> > Subject: Jasper error handling extensions > To: [EMAIL PROTECTED] > MIME-version: 1.0 > X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 > Importance: Normal > X-Priority: 3 (Normal) > X-MSMail-priority: Normal > Delivered-to: mailing list [EMAIL PROTECTED] > Mailing-List: contact [EMAIL PROTECTED]; run by ezmlm > X-Spam-Rating: daedalus.apache.org 1.6.2 0/1000/N > List-Post: <mailto:[EMAIL PROTECTED]> > List-Subscribe: <mailto:[EMAIL PROTECTED]> > List-Unsubscribe: <mailto:[EMAIL PROTECTED]> > List-Help: <mailto:[EMAIL PROTECTED]> > List-Id: "Tomcat Developers List" <tomcat-dev.jakarta.apache.org> > > Hi. > > I want to implement a simple jsp compiler plugin for the eclipse IDE. > After 1 day analyzing the current (tomcat 4.0.2) jasper code I have not > found any hooks where I can install my code to get the jasper error > messages. > Of course I can parse the text message of the exceptions thrown during > parsing and compilation but I think there should be a better way. > > I think about an special ErrorHandler Interface with a concrete > implementation which provides the same error handling (exception > generation) as the current jasper code (leads to minimal code change and > no change of the current interface). > This Error Handler objects are plugged into the parser eigther through > the Options or JspCompilationContext object. (I think Options is the > better one because the ErrorHandler will not change between 2 jsp files) > > With this I will be able to implement a special Error Handler (extending > the default one) for my plugin. > > Possible Interface (first draft): > public interface JasperErrorHandler { > public void handleParseError(Mark mark, String msg) throws > JasperException; > public void handleCompileError(String msg, JspLineMap map) throws > JasperException; > } > > I looked at the code of some IDE which integrate the jasper compiler. > They are duplicating a large number of the orignal jasper code to get > access to the error messages. I think they have the same problems as I > have. > The problem with this is that on each new Tomcat release (with Jasper > code changes) they have to adopt their code :-( > > What do you think about this idea ? > > nice greetings from vienna > Martin Kahr -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
