Examples with ChangeRecorder org.eclipse.emf.ecore.change.util.ChangeRecorder used on opensource projects

Example 1 with ChangeRecorder

use of org.eclipse.emf.ecore.change.util.ChangeRecorder in project xtext-core by eclipse.

the class RelatedXtextResourceUpdater method applyChange.

@Override
public void applyChange(Deltas deltas, IAcceptor<IEmfResourceChange> changeAcceptor) {
    XtextResource res = (XtextResource) lifecycleManager.openAndApplyReferences(getResourceSet(), getResource());
    if (!referenceUpdater.isAffected(deltas, getResource())) {
        return;
    }
    ITextRegionAccess base = textRegionBuilderProvider.get().forNodeModel(res).create();
    ITextRegionDiffBuilder rewriter = new StringBasedTextRegionAccessDiffBuilder(base);
    ReferenceUpdaterContext context = new ReferenceUpdaterContext(deltas, rewriter, getResource());
    referenceUpdater.update(context);
    if (!context.getModifications().isEmpty()) {
        ChangeRecorder rec = createChangeRecorder(res);
        try {
            for (Runnable run : context.getModifications()) {
                run.run();
            }
            ChangeDescription recording = rec.endRecording();
            ResourceSet rs = res.getResourceSet();
            ResourceSetRecording tree = changeTreeProvider.createChangeTree(rs, Collections.emptyList(), recording);
            ResourceRecording recordedResource = tree.getRecordedResource(res);
            if (recordedResource != null) {
                serializer.serializeChanges(recordedResource, rewriter);
            }
        } finally {
            rec.dispose();
        }
    }
    for (IUpdatableReference upd : context.getUpdatableReferences()) {
        referenceUpdater.updateReference(rewriter, upd);
    }
    ITextRegionAccessDiff rewritten = rewriter.create();
    List<ITextReplacement> rep = formatter.format(rewritten);
    TextDocumentChange change = new TextDocumentChange(rewritten, getResource().getUri(), rep);
    changeAcceptor.accept(change);
}