Java Code Examples for org.eclipse.xtext.ide.server.Document#getOffSet()

/**
 * Create the completion proposals.
 */
public CompletionList createCompletionList(Document document, XtextResource resource,
		TextDocumentPositionParams params, CancelIndicator cancelIndicator) {
	CompletionList result = new CompletionList();
	result.setIsIncomplete(false);
	// we set isInComplete to true, so we get asked always, which is the best match to the expected behavior in
	// Xtext
	XIdeContentProposalAcceptor acceptor = new XIdeContentProposalAcceptor(cancelIndicator);
	int caretOffset = document.getOffSet(params.getPosition());
	Position caretPosition = params.getPosition();
	TextRegion position = new TextRegion(caretOffset, 0);
	try {
		createProposals(document.getContents(), position, caretOffset, resource, acceptor);
	} catch (Throwable t) {
		if (!operationCanceledManager.isOperationCanceledException(t)) {
			throw t;
		}
	}
	operationCanceledManager.checkCanceled(cancelIndicator);
	IterableExtensions.forEach(acceptor.getEntries(), (it, idx) -> {
		CompletionItem item = toCompletionItem(it, caretOffset, caretPosition, document);
		item.setSortText(Strings.padStart(Integer.toString(idx.intValue()), 5, '0'));
		result.getItems().add(item);
	});
	return result;
}
 

@Test
public void testOffSet_empty() {
  Document _document = new Document(Integer.valueOf(1), "");
  final Procedure1<Document> _function = (Document it) -> {
    Assert.assertEquals(0, it.getOffSet(this.position(0, 0)));
    try {
      it.getOffSet(this.position(0, 12));
      Assert.fail();
    } catch (final Throwable _t) {
      if (_t instanceof IndexOutOfBoundsException) {
      } else {
        throw Exceptions.sneakyThrow(_t);
      }
    }
  };
  ObjectExtensions.<Document>operator_doubleArrow(_document, _function);
}
 

@Override
public SignatureHelp getSignatureHelp(final Document document, final XtextResource resource, final SignatureHelpParams params, final CancelIndicator cancelIndicator) {
  final int offset = document.getOffSet(params.getPosition());
  Preconditions.<XtextResource>checkNotNull(resource, "resource");
  Preconditions.checkArgument((offset >= 0), ("offset >= 0. Was: " + Integer.valueOf(offset)));
  final EObject object = this.offsetHelper.resolveContainedElementAt(resource, offset);
  if ((object instanceof OperationCall)) {
    final String operationName = this.getOperationName(((OperationCall)object));
    boolean _isNullOrEmpty = StringExtensions.isNullOrEmpty(operationName);
    boolean _not = (!_isNullOrEmpty);
    if (_not) {
      return this.getSignatureHelp(((OperationCall)object), operationName, offset);
    }
  }
  return ISignatureHelpService.EMPTY;
}
 

/**
 * Remove the question mark qualifier from optional fields from the old location and put it at the new location.
 */
@Fix(IssueCodes.CLF_FIELD_OPTIONAL_OLD_SYNTAX)
public void fixOldSyntaxForOptionalFields(QuickfixContext context, ICodeActionAcceptor acceptor) {
	Document doc = context.options.getDocument();
	int offsetNameEnd = getOffsetOfNameEnd(getEObject(context).eContainer());
	List<TextEdit> textEdits = new ArrayList<>();
	// removes the ? at the old location
	int endOffset = doc.getOffSet(context.getDiagnostic().getRange().getEnd());
	textEdits.add(replace(doc, endOffset - 1, 1, ""));
	// inserts a ? at the new location (behind the field or accessor name)
	if (offsetNameEnd != -1) {
		textEdits.add(replace(doc, offsetNameEnd, 0, "?"));
	}
	acceptor.acceptQuickfixCodeAction(context, "Change to new syntax", textEdits);
}
 

/**
 * Update the syntax for optional function parameters.
 */
@Fix(IssueCodes.FUN_PARAM_OPTIONAL_WRONG_SYNTAX)
public void fixOldSyntaxForOptionalFpars(QuickfixContext context, ICodeActionAcceptor acceptor) {
	Document doc = context.options.getDocument();
	List<TextEdit> textEdits = new ArrayList<>();
	int endOffset = doc.getOffSet(context.getDiagnostic().getRange().getEnd());
	textEdits.add(replace(doc, endOffset - 1, 1, " = undefined"));
	acceptor.acceptQuickfixCodeAction(context, "Change to Default Parameter", textEdits);
}
 

@Test
public void testOffSet() {
  StringConcatenation _builder = new StringConcatenation();
  _builder.append("hello world");
  _builder.newLine();
  _builder.append("foo");
  _builder.newLine();
  _builder.append("bar");
  _builder.newLine();
  String _normalize = this.normalize(_builder);
  Document _document = new Document(Integer.valueOf(1), _normalize);
  final Procedure1<Document> _function = (Document it) -> {
    Assert.assertEquals(0, it.getOffSet(this.position(0, 0)));
    Assert.assertEquals(11, it.getOffSet(this.position(0, 11)));
    try {
      it.getOffSet(this.position(0, 12));
      Assert.fail();
    } catch (final Throwable _t) {
      if (_t instanceof IndexOutOfBoundsException) {
      } else {
        throw Exceptions.sneakyThrow(_t);
      }
    }
    Assert.assertEquals(12, it.getOffSet(this.position(1, 0)));
    Assert.assertEquals(13, it.getOffSet(this.position(1, 1)));
    Assert.assertEquals(14, it.getOffSet(this.position(1, 2)));
    Assert.assertEquals(16, it.getOffSet(this.position(2, 0)));
    Assert.assertEquals(19, it.getOffSet(this.position(2, 3)));
  };
  ObjectExtensions.<Document>operator_doubleArrow(_document, _function);
}
 

public CompletionList createCompletionList(Document document, XtextResource resource, CompletionParams params,
		CancelIndicator cancelIndicator) {
	try {
		CompletionList result = new CompletionList();
		result.setIsIncomplete(true);
		IdeContentProposalAcceptor acceptor = proposalAcceptorProvider.get();
		int caretOffset = document.getOffSet(params.getPosition());
		Position caretPosition = params.getPosition();
		TextRegion position = new TextRegion(caretOffset, 0);
		try {
			createProposals(document.getContents(), position, caretOffset, resource, acceptor);
		} catch (Throwable t) {
			if (!operationCanceledManager.isOperationCanceledException(t)) {
				throw t;
			}
		}
		int idx = 0;
		for (ContentAssistEntry it : acceptor.getEntries()) {
			CompletionItem item = toCompletionItem(it, caretOffset, caretPosition, document);
			item.setSortText(Strings.padStart(Integer.toString(idx), 5, '0'));
			result.getItems().add(item);
			idx++;
		}
		return result;
	} catch (Throwable e) {
		throw Exceptions.sneakyThrow(e);
	}
}
 

protected EObject getElementAtOffset(XtextResource xtextResource, Document document, Position caretPosition) {
	int caretOffset = document.getOffSet(caretPosition);
	EObject element = getElementWithIdentifierAt(xtextResource, caretOffset);
	if (element != null) {
		return element;
	} else {
		return getElementWithIdentifierAt(xtextResource, caretOffset - 1);
	}
}
 

public List<? extends Location> getReferences(Document document, XtextResource resource, ReferenceParams params,
		IReferenceFinder.IResourceAccess resourceAccess, IResourceDescriptions indexData,
		CancelIndicator cancelIndicator) {
	int offset = document.getOffSet(params.getPosition());
	List<? extends Location> definitions = Collections.emptyList();
	if (params.getContext().isIncludeDeclaration()) {
		definitions = getDefinitions(resource, offset, resourceAccess, cancelIndicator);
	}
	List<? extends Location> references = getReferences(resource, offset, resourceAccess, indexData,
			cancelIndicator);
	List<Location> result = new ArrayList<>();
	result.addAll(definitions);
	result.addAll(references);
	return result;
}
 

public List<? extends TextEdit> format(Document document, XtextResource resource,
		DocumentRangeFormattingParams params, CancelIndicator cancelIndicator) {
	int startOffset = document.getOffSet(params.getRange().getStart());
	int endOffset = document.getOffSet(params.getRange().getEnd());
	int length = endOffset - startOffset;
	return format(resource, document, startOffset, length, params.getOptions());
}
 

private EObject getEObject(Document doc, XtextResource resource, Range range) {
	Position start = range.getStart();
	int startOffset = doc.getOffSet(start);
	return eObjectAtOffsetHelper.resolveContainedElementAt(resource, startOffset);
}
 

private EObject getEObject(Document doc, XtextResource resource, Range range) {
	Position start = range.getStart();
	int startOffset = doc.getOffSet(start);
	return eObjectAtOffsetHelper.resolveContainedElementAt(resource, startOffset);
}
 

protected Either<Range, PrepareRenameResult> doPrepareRename(Resource resource, Document document,
		PrepareRenameParams params, CancelIndicator cancelIndicator) {
	String uri = params.getTextDocument().getUri();
	if (resource instanceof XtextResource) {
		ICompositeNode rootNode = null;
		XtextResource xtextResource = (XtextResource) resource;
		if (xtextResource != null) {
			IParseResult parseResult = xtextResource.getParseResult();
			if (parseResult != null) {
				rootNode = parseResult.getRootNode();
			}
		}
		if (rootNode == null) {
			RenameService2.LOG.trace("Could not retrieve root node for resource. URI: " + uri);
			return null;
		}
		Position caretPosition = params.getPosition();
		try {
			int caretOffset = document.getOffSet(caretPosition);
			EObject element = null;
			int candidateOffset = caretOffset;
			do {
				element = getElementWithIdentifierAt(xtextResource, candidateOffset);
				if (element != null && !element.eIsProxy()) {
					ILeafNode leaf = NodeModelUtils.findLeafNodeAtOffset(rootNode, candidateOffset);
					if (leaf != null && isIdentifier(leaf)) {
						String convertedNameValue = getConvertedValue(leaf.getGrammarElement(), leaf);
						String elementName = getElementName(element);
						if (!Strings.isEmpty(convertedNameValue) && !Strings.isEmpty(elementName)
								&& Objects.equal(convertedNameValue, elementName)) {
							Position start = document.getPosition(leaf.getOffset());
							Position end = document.getPosition(leaf.getEndOffset());
							return Either.forLeft(new Range(start, end));
						}
					}
				}
				candidateOffset = (candidateOffset - 1);
			} while (((candidateOffset >= 0) && ((candidateOffset + 1) >= caretOffset)));
		} catch (IndexOutOfBoundsException e) {
			RenameService2.LOG.trace("Invalid document " + toPositionFragment(caretPosition, uri));
			return null;
		}
		RenameService2.LOG.trace("No element found at " + toPositionFragment(caretPosition, uri));
	} else {
		RenameService2.LOG.trace("Loaded resource is not an XtextResource. URI: " + resource.getURI());
	}
	return null;
}
 

@Override
public List<? extends DocumentHighlight> getDocumentHighlights(Document document, XtextResource resource, DocumentHighlightParams params, CancelIndicator cancelIndicator) {
	int offset = document.getOffSet(params.getPosition());
	return getDocumentHighlights(resource, offset);
}
 

@Override
public Hover hover(Document document, XtextResource resource, HoverParams params, CancelIndicator cancelIndicator) {
	int offset = document.getOffSet(params.getPosition());
	HoverContext context = createContext(document, resource, offset);
	return hover(context);
}
 

/**
 * @since 2.21
 */
public List<? extends Location> getDefinitions(Document document, XtextResource resource, DefinitionParams params,
		IReferenceFinder.IResourceAccess resourceAccess, CancelIndicator cancelIndicator) {
	int offset = document.getOffSet(params.getPosition());
	return getDefinitions(resource, offset, resourceAccess, cancelIndicator);
}