Re: [xtext-dev] add visitor method to generated AbstractElement interfac

[Sven Efftinge <sven@xxxxxxxxxxx>]

Hi,

as you were talking about AbstractElement the corresponding switch class is XtextSwitch.

This is an example of how it can be used:

package org.eclipse.xtext;

import org.eclipse.xtext.util.XtextSwitch;

public class ToString extends XtextSwitch<String> {

@Override

public String caseGroup(Group object) {

return "Group";

}

@Override

public String caseAssignment(Assignment object) {

return "Assignment";

}

@Override

public String caseAlternatives(Alternatives object) {

return "Alternative";

}

public static void main(String[] args) {

Assignment ass = XtextFactory.eINSTANCE.createAssignment();

String string = new ToString().doSwitch(ass);

System.out.println(string);

}

}

Hope that helps.

Sven

On Sep 15, 2008, at 10:32 AM, michael clay wrote:

hi sven,

could you point me in the right direction pls. did you mean
XtextutilSwitch,ParsetreeSwitch or XtextSwitch
do you have an example code to showcase the usage of the 'generated
switch' class to examine if its sufficient?


m

On Mon, Sep 15, 2008 at 10:24 AM, Sven Efftinge <sven@xxxxxxxxxxx> wrote:

Hi Michael,

you could use the generated Switch class to do that.

Would that be sufficient?

Sven

On Sep 14, 2008, at 8:13 PM, michael clay wrote:

hi all,

i would like to add a visitor method (@modified) to the generated EMF

AbstractElement interface to  get rid of the various 'instanceof' test

in several places of the xtext code for a cleaner

structuring and better maintainability of the code base.

pls. let me know if this is ok for you.

thx

m

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