org.eclipse.xtext.util.CancelIndicator Java Examples

public QuickfixTestBuilder create(final String fileName, final String model) {
  try {
    QuickfixTestBuilder _xblockexpression = null;
    {
      final String positionMarker = this.getPositionMarker(model);
      final IFile file = this._workbenchTestHelper.createFile(fileName, model.replace(positionMarker, ""));
      this.editor = this.openEditorSafely(file);
      final IXtextDocument document = this.editor.getDocument();
      Assert.assertNotNull("Error getting document from editor", document);
      final IUnitOfWork<List<Issue>, XtextResource> _function = (XtextResource it) -> {
        return this.issues = this._iResourceValidator.validate(it, CheckMode.NORMAL_AND_FAST, CancelIndicator.NullImpl);
      };
      document.<List<Issue>>readOnly(_function);
      this.caretOffset = model.indexOf(positionMarker);
      _xblockexpression = this;
    }
    return _xblockexpression;
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

@Override
public void invoke(IWorkflowContext ctx) {
	GeneratorDelegate instance = getCompiler();
	IFileSystemAccess2 fileSystemAccess = getConfiguredFileSystemAccess();
	for (String slot : slotNames) {
		Object object = ctx.get(slot);
		if (object == null) {
			throw new IllegalStateException("Slot '"+slot+"' was empty!");
		}
		if (object instanceof Iterable) {
			Iterable<?> iterable = (Iterable<?>) object;
			for (Object object2 : iterable) {
				if (!(object2 instanceof Resource)) {
					throw new IllegalStateException("Slot contents was not a Resource but a '"+object.getClass().getSimpleName()+"'!");
				}
				GeneratorContext context = new GeneratorContext();
				context.setCancelIndicator(CancelIndicator.NullImpl);
				instance.generate((Resource) object2, fileSystemAccess, context);
			}
		} else if (object instanceof Resource) {
			instance.doGenerate((Resource) object, fileSystemAccess);
		} else {
			throw new IllegalStateException("Slot contents was not a Resource but a '"+object.getClass().getSimpleName()+"'!");
		}
	}
}
 

private FileLoadInfo investigate(IN4JSProject project, URI fileURI, IProgressMonitor monitor) {
	final CancelIndicator cancelIndicator = new MonitorBasedCancelIndicator(monitor);
	operationCanceledManager.checkCanceled(cancelIndicator);

	final ResourceSet resSet = n4jsCore.createResourceSet(Optional.of(project));
	final N4JSResource res = (N4JSResource) resSet.createResource(fileURI);
	try {
		res.load(Collections.emptyMap());
	} catch (IOException e) {
		e.printStackTrace();
	}
	res.getContents(); // trigger loading of AST
	res.resolveLazyCrossReferences(cancelIndicator);

	// now start counting what was loaded incidentally ...
	return investigate(resSet);
}
 

private void doMainPostProcessing(CancelIndicator cancelIndicator) {
	try {
		postProcessingThrowable = null;
		isPostProcessing = true;

		if (postProcessor == null) {
			throw new IllegalStateException("post processor is null");
		}
		if (postProcessor.expectsLazyLinkResolution()) {
			// in next line: call on 'super' because the method in 'this' forwards here!!
			super.resolveLazyCrossReferences(cancelIndicator);
		}

		postProcessor.performPostProcessing(this, cancelIndicator);

	} catch (Throwable th) {
		markAsPostProcessingDone();
		postProcessingThrowable = th;
		throw th;
	}
}
 

protected Object _doEvaluate(XBasicForLoopExpression forLoop, IEvaluationContext context, CancelIndicator indicator) {
	IEvaluationContext forkedContext = context.fork();
	for (XExpression initExpression : forLoop.getInitExpressions()) {
		internalEvaluate(initExpression, forkedContext, indicator);
	}
	XExpression expression = forLoop.getExpression();
	Object condition = expression == null ? Boolean.TRUE : internalEvaluate(expression, forkedContext, indicator);
	while (Boolean.TRUE.equals(condition)) {
		internalEvaluate(forLoop.getEachExpression(), forkedContext, indicator);
		for (XExpression updateExpression : forLoop.getUpdateExpressions()) {
			internalEvaluate(updateExpression, forkedContext, indicator);
		}
		condition = expression == null ? Boolean.TRUE : internalEvaluate(expression, forkedContext, indicator);
	}
	return null;
}
 

protected void computeReferencedJvmTypeHighlighting(IHighlightedPositionAcceptor acceptor, EObject referencer,
		CancelIndicator cancelIndicator) {
	for (EReference reference : referencer.eClass().getEAllReferences()) {
		EClass referencedType = reference.getEReferenceType();
		if (EcoreUtil2.isAssignableFrom(TypesPackage.Literals.JVM_TYPE, referencedType)) {
			List<EObject> referencedObjects = EcoreUtil2.getAllReferencedObjects(referencer, reference);
			if (referencedObjects.size() > 0)
				operationCanceledManager.checkCanceled(cancelIndicator);
			for (EObject referencedObject : referencedObjects) {
				EObject resolvedReferencedObject = EcoreUtil.resolve(referencedObject, referencer);
				if (resolvedReferencedObject != null && !resolvedReferencedObject.eIsProxy()) {
					highlightReferenceJvmType(acceptor, referencer, reference, resolvedReferencedObject);
				}
			}
		}
	}
}
 

@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
	NamedElement element = refactoring.getContextObject();
	if (element != null) {
		IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();

		List<Issue> issues = validator.validate(element.eResource(), CheckMode.NORMAL_AND_FAST,
				CancelIndicator.NullImpl);
		Stream<Issue> errors = issues.stream().filter(issue -> issue.getSeverity() == Severity.ERROR);

		RenameDialog dialog = new RenameDialog(window.getShell(), "Rename..", "Please enter new name: ",
				element.getName(), new NameUniquenessValidator(element), errors.count() > 0);

		if (dialog.open() == Window.OK) {
			String newName = dialog.getNewName();
			if (newName != null) {
				((RenameRefactoring) refactoring).setNewName(newName);
				refactoring.execute();
			}
		}

	}
	return null;
}
 

protected Map<String, List<Diagnostic>> getDiagnostics() {
  try {
    final Function1<CancelIndicator, HashMap<String, List<Diagnostic>>> _function = (CancelIndicator it) -> {
      final HashMap<String, List<Diagnostic>> result = CollectionLiterals.<String, List<Diagnostic>>newHashMap();
      final Function1<Pair<String, Object>, Object> _function_1 = (Pair<String, Object> it_1) -> {
        return it_1.getValue();
      };
      Iterable<PublishDiagnosticsParams> _filter = Iterables.<PublishDiagnosticsParams>filter(ListExtensions.<Pair<String, Object>, Object>map(this.notifications, _function_1), PublishDiagnosticsParams.class);
      for (final PublishDiagnosticsParams diagnostic : _filter) {
        result.put(diagnostic.getUri(), diagnostic.getDiagnostics());
      }
      return result;
    };
    return this.languageServer.getRequestManager().<HashMap<String, List<Diagnostic>>>runRead(_function).get();
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

/**
 * resolves any lazy cross references in this resource, adding Issues for unresolvable elements to this resource.
 * This resource might still contain resolvable proxies after this method has been called.
 * 
 * @param mon a {@link CancelIndicator} can be used to stop the resolution.
 */
public void resolveLazyCrossReferences(final CancelIndicator mon) {
	final CancelIndicator monitor = mon == null ? CancelIndicator.NullImpl : mon;
	TreeIterator<Object> iterator = EcoreUtil.getAllContents(this, true);
	while (iterator.hasNext()) {
		operationCanceledManager.checkCanceled(monitor);
		InternalEObject source = (InternalEObject) iterator.next();
		EStructuralFeature[] eStructuralFeatures = ((EClassImpl.FeatureSubsetSupplier) source.eClass()
				.getEAllStructuralFeatures()).crossReferences();
		if (eStructuralFeatures != null) {
			for (EStructuralFeature crossRef : eStructuralFeatures) {
				operationCanceledManager.checkCanceled(monitor);
				resolveLazyCrossReference(source, crossRef);
			}
		}
	}
}
 

@Override
public void didRefreshOpenFile(OpenFileContext ofc, CancelIndicator ci) {
	if (client instanceof LanguageClientExtensions) {

		LanguageClientExtensions clientExtensions = (LanguageClientExtensions) client;
		XtextResource resource = ofc.getResource();
		IResourceServiceProvider resourceServiceProvider = resource.getResourceServiceProvider();
		IColoringService coloringService = resourceServiceProvider.get(IColoringService.class);

		if (coloringService != null) {
			XDocument doc = ofc.getDocument();
			List<? extends ColoringInformation> colInfos = coloringService.getColoring(resource, doc);

			if (!IterableExtensions.isNullOrEmpty(colInfos)) {
				String uri = resource.getURI().toString();
				ColoringParams colParams = new ColoringParams(uri, colInfos);
				clientExtensions.updateColoring(colParams);
			}
		}
	}

	ILanguageServerAccess.Context ctx = new ILanguageServerAccess.Context(ofc.getResource(), ofc.getDocument(),
			true, ci);
	semanticHighlightingRegistry.update(ctx);
}
 

@Test(timeout = 1000)
public void testRunWriteLogExceptionCancellable() {
  final Runnable _function = () -> {
    final Function0<Object> _function_1 = () -> {
      throw new RuntimeException();
    };
    final Function2<CancelIndicator, Object, Object> _function_2 = (CancelIndicator $0, Object $1) -> {
      return null;
    };
    final CompletableFuture<Object> future = this.requestManager.<Object, Object>runWrite(_function_1, _function_2);
    try {
      future.join();
    } catch (final Throwable _t) {
      if (_t instanceof Exception) {
      } else {
        throw Exceptions.sneakyThrow(_t);
      }
    }
  };
  final LoggingTester.LogCapture logResult = LoggingTester.captureLogging(Level.ALL, WriteRequest.class, _function);
  logResult.assertLogEntry("Error during request:");
}
 

@Test public void testBug345433_01() throws Exception {
	String classAsString = 
		"import static extension org.eclipse.xtext.GrammarUtil.*\n" +
		"class Foo {" +
		"	org.eclipse.xtext.Grammar grammar\n" +
		"	def function1() {\n" + 
		"		grammar.containedRuleCalls.filter(e | " +
		"			!e.isAssigned() && !e.isEObjectRuleCall()" +
		"		).map(e | e.rule)\n" + 
		"	}\n" +
		"	def function2() {\n" +
		"		newArrayList(function1().head())\n" +
		"	}\n" +
		"}";
	XtendClass clazz = clazz(classAsString);
	IResourceValidator validator = ((XtextResource) clazz.eResource()).getResourceServiceProvider().getResourceValidator();
	List<Issue> issues = validator.validate(clazz.eResource(), CheckMode.ALL, CancelIndicator.NullImpl);
	assertTrue("Resource contained errors : " + issues.toString(), issues.isEmpty());
	XtendFunction function1 = (XtendFunction) clazz.getMembers().get(1);
	JvmOperation operation1 = associator.getDirectlyInferredOperation(function1);
	assertEquals("java.lang.Iterable<org.eclipse.xtext.AbstractRule>", operation1.getReturnType().getIdentifier());
	XtendFunction function2 = (XtendFunction) clazz.getMembers().get(2);
	JvmOperation operation2 = associator.getDirectlyInferredOperation(function2);
	assertEquals("java.util.ArrayList<org.eclipse.xtext.AbstractRule>", operation2.getReturnType().getIdentifier());
}
 

/**
 * Apply a text update and then create content assist proposals. This document
 * read operation is scheduled with higher priority, so currently running
 * operations may be canceled. The document processing is rescheduled as
 * background work afterwards.
 */
public ContentAssistResult createProposalsWithUpdate(XtextWebDocumentAccess document, String deltaText,
		int deltaOffset, int deltaReplaceLength, ITextRegion selection, int caretOffset, int proposalsLimit)
		throws InvalidRequestException {
	String[] stateIdWrapper = new String[1];
	ContentAssistContext[] contexts = document
			.modify(new CancelableUnitOfWork<ContentAssistContext[], IXtextWebDocument>() {
				@Override
				public ContentAssistContext[] exec(IXtextWebDocument it, CancelIndicator cancelIndicator)
						throws Exception {
					it.setDirty(true);
					it.createNewStateId();
					stateIdWrapper[0] = it.getStateId();
					it.updateText(deltaText, deltaOffset, deltaReplaceLength);
					return getContexts(it, selection, caretOffset);
				}
			});
	List<ContentAssistContext> contextsList = Arrays.asList(contexts);
	return createProposals(contextsList, stateIdWrapper[0], proposalsLimit);
}
 

protected Object _doEvaluate(XListLiteral literal, IEvaluationContext context, CancelIndicator indicator) {
	IResolvedTypes resolveTypes = typeResolver.resolveTypes(literal);
	LightweightTypeReference type = resolveTypes.getActualType(literal);
	List<Object> list = newArrayList();
	for(XExpression element: literal.getElements()) {
		if (indicator.isCanceled())
			throw new InterpreterCanceledException();
		list.add(internalEvaluate(element, context, indicator));
	}
	if(type != null && type.isArray()) {
		try {
			LightweightTypeReference componentType = type.getComponentType();
			return Conversions.unwrapArray(list, getJavaType(componentType.getType()));
		} catch (ClassNotFoundException e) {
		}
	}
	return Collections.unmodifiableList(list);
}
 

/**
 * Applies all fixes of the same kind to the project containing the given URI.
 */
public WorkspaceEdit applyToProject(URI uri, String issueCode, String fixId, CancelIndicator cancelIndicator) {

	WorkspaceEdit result = new WorkspaceEdit();
	QuickFixImplementation quickfix = findOriginatingQuickfix(issueCode, fixId);
	if (quickfix == null) {
		return result;
	}

	Optional<? extends IN4JSProject> project = n4jsCore.findProject(uri);
	if (!project.isPresent()) {
		return result;
	}
	List<URI> urisInProject = Lists.newArrayList(
			IterableExtensions.flatMap(project.get().getSourceContainers(), sc -> sc));

	Map<String, List<TextEdit>> allEdits = new HashMap<>();
	for (URI currURI : urisInProject) {
		Map<String, List<TextEdit>> edits = doApplyToFile(currURI, issueCode, quickfix, cancelIndicator);
		allEdits.putAll(edits);
	}
	result.setChanges(allEdits);
	return result;
}
 

@Test
public void testLinkingError1() throws Exception {
	Statechart statechart = createStatechart("internal: event Event1");
	res.getContents().add(statechart);
	Transition transition = createTransition("Event2 [true] / 3 * 3");
	res.getContents().add(transition);
	res.resolveLazyCrossReferences(CancelIndicator.NullImpl);
	System.out.println(res.getLinkingDiagnostics());
	assertEquals(1, res.getLinkingDiagnostics().size());
}
 

@Override
public Collection<FoldedPosition> getFoldingRegions(final IXtextDocument xtextDocument) {
	return xtextDocument.tryReadOnly(new CancelableUnitOfWork<Collection<FoldedPosition>, XtextResource>() {
		@Override
		public Collection<FoldedPosition> exec(XtextResource xtextResource, CancelIndicator cancelIndicator)
				throws Exception {
			try {
				DefaultFoldingRegionProvider.this.cancelIndicator = cancelIndicator;
				return doGetFoldingRegions(xtextDocument, xtextResource);
			} finally {
				DefaultFoldingRegionProvider.this.cancelIndicator = null;
			}
		}
	}, () -> Collections.emptyList());
}
 

public static void resolveAll(Resource resource, CancelIndicator monitor) {
	for (Iterator<EObject> i = resource.getAllContents(); i.hasNext();) {
		if (monitor.isCanceled())
			throw new OperationCanceledException();
		EObject eObject = i.next();
		resolveCrossReferences(eObject, monitor);
	}
}
 

protected Object evaluateGetAndAssign(XAbstractFeatureCall featureCall, IEvaluationContext context, CancelIndicator indicator) {
	XAbstractFeatureCall operand = (XAbstractFeatureCall) featureCall.getActualArguments().get(0);
	
	Object originalValue = internalEvaluate(operand, context, indicator);
	Object value = applyGetAndAssignOperator(originalValue, featureCall.getConcreteSyntaxFeatureName());
	
	assignValueTo(operand.getFeature(), featureCall, value, context, indicator);
	return originalValue;
}
 

@Test public void testMissingArgument() throws Exception {
	XtextResource resource = getResourceFromString(
			"grammar com.acme.Bar with org.eclipse.xtext.common.Terminals\n" +
			"generate metamodel 'myURI'\n" +
			"Model: rule=Rule<First=true, Second=false>;\n" + 
			"Rule<First, Missing, Second>: name=ID;");

	IResourceValidator validator = get(IResourceValidator.class);
	List<Issue> issues = validator.validate(resource, CheckMode.FAST_ONLY, CancelIndicator.NullImpl);
	assertEquals(issues.toString(), 1, issues.size());
	assertEquals("Missing argument for parameter Missing", issues.get(0).getMessage());
}
 

private void updateMarkersForExternalLibraries(Delta delta, ResourceSet resourceSet, IProgressMonitor monitor) {
	URI uri = delta.getUri();
	if (n4jsCore.isNoValidate(uri)) {
		return;
	}

	Resource resource = resourceSet.getResource(uri, true);
	IResourceValidator validator = getValidator(resource);
	IN4JSProject prj = n4jsCore.findProject(uri).orNull();
	CancelIndicator cancelIndicator = getCancelIndicator(monitor);

	if (prj != null && prj.isExternal() && prj.exists() && prj instanceof N4JSEclipseProject && uri.isFile()) {
		// transform file uri in workspace iResource
		IFile file = URIUtils.convertFileUriToPlatformFile(uri);

		if (file != null && resource != null) {
			List<Issue> list = validator.validate(resource, CheckMode.NORMAL_AND_FAST, cancelIndicator);

			if (SHOW_ONLY_EXTERNAL_ERRORS) {
				for (Iterator<Issue> iter = list.iterator(); iter.hasNext();) {
					if (iter.next().getSeverity() != Severity.ERROR) {
						iter.remove();
					}
				}
			}

			try {
				validatorExtension.createMarkers(file, resource, list);
			} catch (CoreException e) {
				e.printStackTrace();
			}
		}
	}
}
 

/**
 * @since 2.21
 */
@Override
public void didChangeWorkspaceFolders(DidChangeWorkspaceFoldersParams params) {
	requestManager.runWrite(() -> {
		workspaceManager.didChangeWorkspaceFolders(params, CancelIndicator.NullImpl);
		return null;
	}, (a, b) -> null);
}
 

public AbstractExpectationTest expects(final String input) {
  try {
    this.rootExpression = this.expression(input, false);
    this.getResolver().initializeFrom(this.rootExpression);
    this.resolvedTypes = this.getResolver().reentrantResolve(CancelIndicator.NullImpl);
    this.pendingAssert = true;
    return this;
  } catch (Throwable _e) {
    throw Exceptions.sneakyThrow(_e);
  }
}
 

/**
 * Compute the references. Executed in read request.
 */
protected List<? extends Location> references(OpenFileContext ofc, ReferenceParams params,
		CancelIndicator cancelIndicator) {
	URI uri = ofc.getURI();
	DocumentSymbolService documentSymbolService = getService(uri, DocumentSymbolService.class);
	if ((documentSymbolService == null)) {
		return Collections.emptyList();
	}
	XtextResource res = ofc.getResource();
	XDocument doc = ofc.getDocument();
	return documentSymbolService.getReferences(doc, res, params, resourceAccess,
			openFilesManager.createLiveScopeIndex(), cancelIndicator);
}
 

/**
 * Convert the given params to an enriched instance of options.
 */
public ICodeActionService2.Options toOptions(CodeActionParams params, XDocument doc, XtextResource res,
		CancelIndicator cancelIndicator) {

	ICodeActionService2.Options options = new ICodeActionService2.Options();
	options.setDocument(doc);
	options.setResource(res);
	options.setLanguageServerAccess(access);
	options.setCodeActionParams(params);
	options.setCancelIndicator(cancelIndicator);
	return options;
}
 

/**
 * Compute the code lenses.
 */
protected List<? extends CodeLens> codeLens(OpenFileContext ofc, CodeLensParams params,
		CancelIndicator cancelIndicator) {
	URI uri = ofc.getURI();
	ICodeLensService codeLensService = getService(uri, ICodeLensService.class);
	if ((codeLensService == null)) {
		return Collections.emptyList();
	}
	XtextResource res = ofc.getResource();
	XDocument doc = ofc.getDocument();
	List<? extends CodeLens> result = codeLensService.computeCodeLenses(doc, res, params, cancelIndicator);
	installURI(result, uri.toString());
	return result;
}
 

@Override
protected void createCodeMinings(IDocument document, XtextResource resource, CancelIndicator indicator,
		IAcceptor<? super ICodeMining> acceptor) throws BadLocationException {
	createImplicitActionReturnType(resource, acceptor);
	createImplicitFieldType(resource, acceptor);
	createImplicitVariableType(resource, acceptor);
}
 

/**
 * Create the text edits for the formatter. Executed in a read request.
 */
protected List<? extends TextEdit> rangeFormatting(OpenFileContext ofc, DocumentRangeFormattingParams params,
		CancelIndicator cancelIndicator) {
	URI uri = ofc.getURI();
	FormattingService formatterService = getService(uri, FormattingService.class);
	if ((formatterService == null)) {
		return Collections.emptyList();
	}
	XtextResource res = ofc.getResource();
	XDocument doc = ofc.getDocument();
	return formatterService.format(doc, res, params, cancelIndicator);
}
 

@Test
public void testRemoveOrphanedLinkingDiagnostics() throws Exception {
	Statechart statechart = createStatechart("internal: event Event1");
	res.getContents().add(statechart);
	Transition transition = createTransition("Event2 [true] / 3 * 3");
	res.getContents().add(transition);
	res.resolveLazyCrossReferences(CancelIndicator.NullImpl);
	assertEquals(1, res.getLinkingDiagnostics().size());
	transition.setSpecification("Event1 [true] / 3 * 3");
	res.resolveLazyCrossReferences(CancelIndicator.NullImpl);
	assertEquals(0, res.getLinkingDiagnostics().size());
}
 

@SuppressWarnings("javadoc")
public IssuesProvider(IResourceValidator resourceValidator, Resource res, CheckMode checkMode,
		OperationCanceledManager operationCanceledManager, CancelIndicator ci) {
	this.rv = resourceValidator;
	this.r = res;
	this.checkMode = checkMode;
	this.operationCanceledManager = operationCanceledManager;
	this.ci = ci;
}