| rewrite the method for finding references [message #550104] |
Thu, 29 July 2010 07:24  |
 No real name
Messages: 36
Registered: July 2010 |
Member |
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I try for my grammar to re-write the method for finding references.
package org.xtext.example.mydsl.ui;
import java.util.Iterator;
import org.apache.log4j.Logger;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IStorage;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.search.ui.NewSearchUI;
import org.eclipse.xtext.resource.EObjectAtOffsetHelper;
import org.eclipse.xtext.resource.IEObjectDescription;
import org.eclipse.xtext.resource.IResourceDescription;
import org.eclipse.xtext.resource.IResourceDescriptions;
import org.eclipse.xtext.resource.XtextResource;
import org.eclipse.xtext.ui.editor.XtextEditor;
import org.eclipse.xtext.ui.editor.findrefs.FindReferencesHandler;
import org.eclipse.xtext.ui.editor.findrefs.Messages;
import org.eclipse.xtext.ui.editor.findrefs.ReferenceQuery;
import org.eclipse.xtext.ui.editor.model.IXtextDocument;
import org.eclipse.xtext.ui.editor.utils.EditorUtils;
import org.eclipse.xtext.ui.resource.IStorage2UriMapper;
import org.eclipse.xtext.util.concurrent.IUnitOfWork;
import org.xtext.example.mydsl.myDsc.QualifiedName;
import com.google.common.base.Predicate;
import com.google.common.collect.Iterables;
import com.google.inject.Inject;
import com.google.inject.Provider;
public class MyDscFindReferencesHandler extends org.eclipse.xtext.ui.editor.findrefs.FindReferencesHandler
{
static
{
//System.out.println("MyDscFindReferencesHandler loaded");
}
private class EObjectResolver1 implements IUnitOfWork<IEObjectDescription, XtextResource> {
private final ITextSelection selection;
private EObjectResolver1(ITextSelection selection) {
this.selection = selection;
}
public IEObjectDescription exec(XtextResource state) throws Exception {
EObject element = EObjectAtOffsetHelper.resolveElementAt(state, selection.getOffset(), null);
if (element != null) {
final URI eObjectURI = EcoreUtil.getURI(element);
IResourceDescription resourceDescription = resourceDescriptions.getResourceDescription(eObjectURI
.trimFragment());
if (resourceDescription != null) {
System.out.println("res description ="+resourceDescription);
Iterator<IEObjectDescription> eObjectDescriptions = Iterables.filter(
resourceDescription.getExportedObjects(), new Predicate<IEObjectDescription>() {
public boolean apply(IEObjectDescription input) {
return input.getEObjectURI().equals(eObjectURI);
}
}).iterator();
if (eObjectDescriptions.hasNext()) {
return eObjectDescriptions.next();
}
}
}
return null;
}
}
@Inject
private IStorage2UriMapper storage2UriMapper;
@Inject
private Provider<ReferenceQuery> queryProvider;
@Inject
private IResourceDescriptions resourceDescriptions;
private static final Logger LOG = Logger.getLogger(FindReferencesHandler.class);
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
try {
XtextEditor editor = EditorUtils.getActiveXtextEditor(event);
ITextSelection selection = (ITextSelection) editor.getSelectionProvider().getSelection();
EObjectResolver1 er=new EObjectResolver1(selection);
IEObjectDescription eObjectDescription = editor.getDocument().readOnly(new EObjectResolver1(selection));
System.out.println(eObjectDescription);
} catch (Exception e) {
//LOG.error(Messages.FindReferencesHandler_3, e);
}
return null;
}
}
After running it i get this:
res description =org.eclipse.xtext.builder.builderState.impl.ResourceDescriptionImpl@13ba66d (URI: platform:/resource/DscProject/nice_try.dsc, importedNames: null)
because obviously
resourceDescription.getExportedObjects() returns null.
My grammar looks something like this:
Config: ( property+=Property | rule+=Rule | importpack+=ImportPackage)* ;
Property: selec1=Selector Force? ':' (herit=inheritage | expr1=Expr );
Rule: selec2=Selector '{' (prop1+=Property)* '}';
ImportPackage: 'import' namepackage+=ID* ;
Selector
:
id_selector1=QualifiedName
|
id_selector2=QualifiedName1
;
Expr
: value1+=Value (OPERATOR value1+=Value)*
And the text from editor :
blBorder : lineBorder(black, 1)
noBorder : emptyBorder()
uiPackage : "com.dalim.skin.component."
//-------------- CONST
Base
{
bg : rgb(45, 45, 45) //background color
fg : white //foreground color usually used for text
ctrlBg : Base.bg //background color of control components (Button, CheckBox, ComboBox, ect...)
ctrlFg : Base.fg //background color of control components (Button, CheckBox, ComboBox, ect...)
light : Base.bg + 27 //alternate color light
dark : Base.bg + 19 //alternate color dark
focus : black
fontSize : 10
select : #239fff //selection background color
font : font("Lucida Grande", Base.fontSize)
disabled : midColor(Base.fg, Base.bg) - 30
disabledOpacity : 45 // percentage
}
Panel
{
bezelBackground : Base.bg - 27
bezelArcSize : 20
}
PanelUI : uiPackage + "PanelUI"
let's say i wanna find references for uiPackage.
Someone can give me an idea of what i should modify/ rewrite in the exec /execute functions to get all places where uiPackage is ?
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| Re: rewrite the method for finding references [message #550122 is a reply to message #550118] |
Thu, 29 July 2010 08:37  |
Sebastian Zarnekow
Messages: 2992
Registered: July 2009 |
Senior Member |
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Hi Iuliana,
I'ld strongly recommend to take a step back and revise your grammar. If
you use cross links and implement a proper scoping for them, everything
else will work out of the box.
Furthermore please note, that each and every default implementation in
Xtext relies on a structural feature 'name' to mark an semantic object
as identifyable (read: exported, named, whatever).
Please refer to the docs for detailed information about linking, scoping
and qualified names.
Regards,
Sebastian
--
Need professional support for Eclipse Modeling?
Go visit: http://xtext.itemis.com
Am 29.07.10 10:22, schrieb iuliana_1985@personal.ro:
> I advanced a little bit.
> But it's still not pointing to all references in the same text file.
>
>
> package org.xtext.example.mydsl.ui;
>
> import j......
>
> public class MyDscFindReferencesHandler extends
> org.eclipse.xtext.ui.editor.findrefs.FindReferencesHandler
> {
>
>
> @Inject
> private IStorage2UriMapper storage2UriMapper;
>
> @Inject
> private Provider<ReferenceQuery> queryProvider;
>
> private static final Logger LOG =
> Logger.getLogger(FindReferencesHandler.class);
>
>
> @Override
> public Object execute(ExecutionEvent event) throws ExecutionException {
>
> try {
> XtextEditor editor = EditorUtils.getActiveXtextEditor(event);
>
> ITextSelection selection = (ITextSelection)
> editor.getSelectionProvider().getSelection();
>
> IXtextDocument ix = ((XtextEditor) editor).getDocument();
> XtextResource xr = ix.readOnly(new MyUnitWorker());
> IResource resource = ((XtextEditor) editor).getResource();
> EObject model = xr.getContents().get(0);
> List<IEObjectDescription> elementList = new
> ArrayList<IEObjectDescription>();
> for (Iterator<EObject> iterator = xr.getAllContents(); iterator
> .hasNext();) { EObject element = iterator.next(); if(element instanceof
> QualifiedName)
>
> {
> if
> (((QualifiedName)element).getId_inst().get(0).equals(selecti on.getText()))
> {
> elementList.add(EObjectDescription .create(selection.getText(), element));
> }
> } } ReferenceQuery referenceQuery = queryProvider.get();
> for(int i=0; i<1;i++)
> {
>
> //ReferenceQuery referenceQuery = queryProvider.get();
> String label = Messages.FindReferencesHandler_labelPrefix +
> elementList.get(i).toString();
>
> Iterator<IStorage> storages =
> storage2UriMapper.getStorages(elementList.get(i).getEObjectU RI())
> .iterator();
>
> if (storages.hasNext()) {
> label += Messages.FindReferencesHandler_1 +
> storages.next().getFullPath().toString() +
> Messages.FindReferencesHandler_2;
> }
>
>
>
> referenceQuery.init(elementList.get(i).getEObjectURI(), label);
> NewSearchUI.activateSearchResultView();
> NewSearchUI.runQueryInBackground(referenceQuery);
>
>
> System.out.println(i+" "+label);
>
> }
>
>
> } catch (Exception e) {
> //LOG.error(Messages.FindReferencesHandler_3, e);
> }
> return null;
>
> }
>
>
> class MyUnitWorker implements IUnitOfWork<XtextResource, XtextResource> {
> public XtextResource exec(XtextResource state) throws Exception {
> return state;
> }
> }
>
>
>
>
> }
>
>
>
>
>
>
> I get something like
>
> Xtext References to uiPackage (/DscProject/nice_try.dsc)
>
> in "Search" tab.
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