org.eclipse.xtext.resource.XtextResource#getParseResult

Source File: RenameService2.java From xtext-core with Eclipse Public License 2.0

6 votes

protected EObject getElementWithIdentifierAt(XtextResource xtextResource, int offset) {
	if (offset >= 0) {
		if (xtextResource != null) {
			IParseResult parseResult = xtextResource.getParseResult();
			if (parseResult != null) {
				ICompositeNode rootNode = parseResult.getRootNode();
				if (rootNode != null) {
					ILeafNode leaf = NodeModelUtils.findLeafNodeAtOffset(rootNode, offset);
					if (leaf != null && isIdentifier(leaf)) {
						return eObjectAtOffsetHelper.resolveElementAt(xtextResource, offset);
					}
				}
			}
		}
	}
	return null;
}

Source File: XtendHoverSerializer.java From xtext-xtend with Eclipse Public License 2.0

6 votes

public Pair<String, String> computePreAndSuffix(EObject element) {
	ICompositeNode node = NodeModelUtils.getNode(element);
	if (node != null) {
		XtextResource resource = (XtextResource) element.eResource();
		if (resource != null) {
			IParseResult parseResult = resource.getParseResult();
			if (parseResult != null) {
				String model = parseResult.getRootNode().getText();
				return Tuples.create(model.substring(0, node.getTotalOffset()) + "\n",
						"\n" + model.substring(node.getTotalEndOffset()));
			}
		}
	}
	return Tuples.create("", "");

}

Source File: FormatterTester.java From xtext-eclipse with Eclipse Public License 2.0

6 votes

protected ArrayList<TextReplacement> createMissingEditReplacements(XtextResource res, Collection<TextReplacement> edits, int offset,
		int length) {
	Set<Integer> offsets = IterableExtensions
			.toSet(Iterables.transform(edits, (TextReplacement it) -> Integer.valueOf(it.getOffset())));
	ArrayList<TextReplacement> result = new ArrayList<>();
	int lastOffset = 0;
	IParseResult parseResult = res.getParseResult();
	if (parseResult != null) {
		ICompositeNode rootNode = parseResult.getRootNode();
		if (rootNode != null) {
			for (ILeafNode leaf : rootNode.getLeafNodes()) {
				if (!leaf.isHidden() || !StringExtensions.isNullOrEmpty(leaf.getText().trim())) {
					ITextRegion leafRegion = leaf.getTextRegion();
					if (lastOffset >= offset && leafRegion.getOffset() <= offset + length && !offsets.contains(Integer.valueOf(lastOffset))) {
						result.add(new TextReplacement(lastOffset, leafRegion.getOffset() - lastOffset, "!!"));
					}
					lastOffset = leafRegion.getOffset() + leafRegion.getLength();
				}
			}
		}
	}
	return result;
}

Source File: XbaseHighlightingCalculator.java From xtext-extras with Eclipse Public License 2.0

6 votes

@Override
public void provideHighlightingFor(XtextResource resource, IHighlightedPositionAcceptor acceptor,
		CancelIndicator cancelIndicator) {
	if (resource == null)
		return;
	IParseResult parseResult = resource.getParseResult();
	if (parseResult == null || parseResult.getRootASTElement() == null)
		return;
	if (highlightedIdentifiers == null) {
		highlightedIdentifiers = initializeHighlightedIdentifiers();
		idLengthsToHighlight = new BitSet();
		for (String s : highlightedIdentifiers.keySet()) {
			idLengthsToHighlight.set(s.length());
		}
	}
	//TODO remove this check when the typesystem works without a java project
	if (resource.isValidationDisabled()) {
		highlightSpecialIdentifiers(acceptor, parseResult.getRootNode());
		return;
	}
	doProvideHighlightingFor(resource, acceptor, cancelIndicator);
}

Source File: XtextStyledTextSelectionProvider.java From statecharts with Eclipse Public License 1.0

6 votes

public ISelection getSelection() {
	if (styledText.isDisposed())
		return StructuredSelection.EMPTY;
	int offset = Math.max(styledText.getCaretOffset() - 1, 0);
	XtextResource fakeResource = xtextResource;
	IParseResult parseResult = fakeResource.getParseResult();
	if (parseResult == null)
		return StructuredSelection.EMPTY;
	ICompositeNode rootNode = parseResult.getRootNode();
	ILeafNode selectedNode = NodeModelUtils.findLeafNodeAtOffset(rootNode, offset);
	final EObject selectedObject = NodeModelUtils.findActualSemanticObjectFor(selectedNode);
	if (selectedObject == null) {
		return StructuredSelection.EMPTY;
	}
	return new StructuredSelection(selectedObject);
}

Source File: FormatHyperlinkHelper.java From dsl-devkit with Eclipse Public License 1.0

6 votes

/** {@inheritDoc} */
@Override
public void createHyperlinksByOffset(final XtextResource resource, final int offset, final IHyperlinkAcceptor acceptor) {
  final IParseResult parseResult = resource.getParseResult();
  if (parseResult == null || parseResult.getRootNode() == null) {
    return; // Return, no need to call in super.createAdditionalHyperlinks
  }

  // Check if the current parse tree node represents an override keyword, in which case we want to link
  // to the overridden rule
  INode node = NodeModelUtils.findLeafNodeAtOffset(parseResult.getRootNode(), offset);
  if (node != null && isOverrideKeyword(node.getGrammarElement())) {
    Rule rule = (Rule) eObjectAtOffsetHelper.resolveElementAt(resource, offset);
    Region region = new Region(node.getOffset(), node.getLength());
    List<Rule> extendedRules = getExtendedRules(rule);
    for (Rule extendedRule : extendedRules) {
      createHyperlinksTo(resource, region, extendedRule, acceptor);
    }
  }
  super.createHyperlinksByOffset(resource, offset, acceptor);
}

Source File: DotFoldingRegionProvider.java From gef with Eclipse Public License 2.0

6 votes

protected void computeObjectFolding(XtextResource xtextResource,
		IFoldingRegionAcceptor<ITextRegion> foldingRegionAcceptor) {
	acceptedRegions.clear();

	IParseResult parseResult = xtextResource.getParseResult();
	if (parseResult != null) {
		EObject rootASTElement = parseResult.getRootASTElement();
		if (rootASTElement != null) {
			TreeIterator<EObject> allContents = rootASTElement
					.eAllContents();
			while (allContents.hasNext()) {
				EObject eObject = allContents.next();
				if (isHandled(eObject)) {
					computeObjectFolding(eObject, foldingRegionAcceptor);
				}
				if (eObject instanceof Attribute) {
					computeDotAttributeValueFolding((Attribute) eObject,
							foldingRegionAcceptor);
				}
				if (!shouldProcessContent(eObject)) {
					allContents.prune();
				}
			}
		}
	}
}

Source File: DefaultSemanticHighlightingCalculator.java From xtext-core with Eclipse Public License 2.0

5 votes

@Override
public void provideHighlightingFor(XtextResource resource, IHighlightedPositionAcceptor acceptor,
		CancelIndicator cancelIndicator) {
	if (resource == null)
		return;
	IParseResult parseResult = resource.getParseResult();
	if (parseResult == null || parseResult.getRootASTElement() == null)
		return;
	doProvideHighlightingFor(resource, acceptor, cancelIndicator);
}

Source File: MultiLineJavaDocTypeReferenceProvider.java From xtext-core with Eclipse Public License 2.0

5 votes

/**
 * {@inheritDoc}
 */
@Override
public EObjectInComment computeEObjectReferencedInComment(XtextResource resource, int offset) {
	IParseResult parseResult = resource.getParseResult();
	if(parseResult != null) {
		INode rootNode = parseResult.getRootNode();
		INode node = NodeModelUtils.findLeafNodeAtOffset(rootNode, offset);
		EObject semanticObject = NodeModelUtils.findActualSemanticObjectFor(node);
		if(semanticObject != null) {
			EReference reference = getEReference(semanticObject, node, offset);
			if(reference != null) {
				IScope scope = getScope(semanticObject, reference, node, offset);
				List<ReplaceRegion> eObjectReferences = computeTypeRefRegions(node);
				for(ReplaceRegion eObjectReference : eObjectReferences) {
					if(eObjectReference.getOffset() <= offset && offset <= eObjectReference.getEndOffset()) {
						String eObjectReferenceText = eObjectReference.getText();
						if(!Strings.isNullOrEmpty(eObjectReferenceText)) {
							ITextRegion region = new TextRegion(eObjectReference.getOffset(), eObjectReference.getLength());
							IEObjectDescription candidate = getElementFromScope(scope, node, region, eObjectReferenceText);
							if(candidate != null) {
								EObject eObject = candidate.getEObjectOrProxy();
								if(eObject != null) {
									return new EObjectInComment(eObject, region);
								}
							}
						}
					}
				}
			}
		}
	}
	return null;
}

Source File: ContentFormatterFactory.java From xtext-eclipse with Eclipse Public License 2.0

5 votes

@Override
public ReplaceRegion exec(XtextResource state) throws Exception {
	IParseResult parseResult = state.getParseResult();
	if (parseResult == null)
		return null;
	IFormattedRegion r = formatter.format(parseResult.getRootNode(), region.getOffset(), region.getLength());
	return new ReplaceRegion(r.getOffset(), r.getLength(), r.getFormattedText());
}

Source File: TestLanguageRenameService.java From xtext-core with Eclipse Public License 2.0

5 votes

@Override
protected EObject getElementWithIdentifierAt(XtextResource xtextResource, int offset) {
	if (offset >= 0) {
		if (xtextResource != null) {
			IParseResult parseResult = xtextResource.getParseResult();
			if (parseResult != null) {
				ICompositeNode rootNode = parseResult.getRootNode();
				if (rootNode != null) {
					ILeafNode leaf = NodeModelUtils.findLeafNodeAtOffset(rootNode, offset);
					if (leaf != null && isIdentifier(leaf)) {
						EObject element = eObjectAtOffsetHelper.resolveElementAt(xtextResource, offset);
						if (element != null) {
							IQualifiedNameProvider nameProvider = xtextResource.getResourceServiceProvider()
									.get(IQualifiedNameProvider.class);
							QualifiedName fqn = nameProvider.getFullyQualifiedName(element);
							if (fqn != null) {
								String leafText = NodeModelUtils.getTokenText(leaf);
								if (fqn.getSegmentCount() == 1 && Objects.equal(fqn.toString(), leafText)
										|| Objects.equal(fqn.getLastSegment(), leafText)) {
									return element;
								}
							}
						}
					}
				}
			}
		}
	}
	return null;
}

Source File: AbstractXtextTests.java From xtext-core with Eclipse Public License 2.0

5 votes

protected void checkNodeModel(XtextResource resource) {
	IParseResult parseResult = resource.getParseResult();
	if(parseResult != null) {
		ICompositeNode rootNode = parseResult.getRootNode();
		getInvariantChecker().checkInvariant(rootNode);
		new LookAheadInfo(rootNode).checkConsistency();
	}
}

Source File: AstSelectionProvider.java From xtext-eclipse with Eclipse Public License 2.0

5 votes

protected EObject getEObjectAtOffset(XtextResource resource, ITextRegion currentEditorSelection) {
	IParseResult parseResult = resource.getParseResult();
	if (parseResult != null) {
		ICompositeNode rootNode = parseResult.getRootNode();
		INode nodeAtOffset = findLeafNodeAtOffset(rootNode, currentEditorSelection.getOffset());
		return findSemanticObjectFor(nodeAtOffset);
	}
	return null;
}

Source File: N4JSASTUtils.java From n4js with Eclipse Public License 1.0

5 votes

/**
 * Computes an MD5 hash from the given resource's source code (the actual source text), as stored in
 * {@link TModule#getAstMD5()}. Will fail with an exception if the given resource does not have a valid
 * {@link XtextResource#getParseResult() parse result}, as created by Xtext during parsing.
 */
public static String md5Hex(XtextResource resource) {
	final IParseResult parseResult = resource.getParseResult();
	final INode rootNode = parseResult != null ? parseResult.getRootNode() : null;
	final String source = rootNode != null ? rootNode.getText() : null;
	if (source == null) {
		throw new IllegalStateException("resource does not have a valid parse result: " + resource.getURI());
	}
	return Hashing.murmur3_128(SEED).hashString(source, Charsets.UTF_8).toString();
}

Source File: HoverService.java From xtext-core with Eclipse Public License 2.0

5 votes

protected HoverContext createContext(Document document, XtextResource resource, int offset) {
	EObject crossLinkedEObject = eObjectAtOffsetHelper.resolveCrossReferencedElementAt(resource, offset);
	if (crossLinkedEObject != null) {
		if (crossLinkedEObject.eIsProxy()) {
			return null;
		}
		IParseResult parseResult = resource.getParseResult();
		if (parseResult == null) {
			return null;
		}
		ILeafNode leafNode = NodeModelUtils.findLeafNodeAtOffset(parseResult.getRootNode(), offset);
		if (leafNode != null && leafNode.isHidden() && leafNode.getOffset() == offset) {
			leafNode = NodeModelUtils.findLeafNodeAtOffset(parseResult.getRootNode(), offset - 1);
		}
		if (leafNode == null) {
			return null;
		}
		ITextRegion leafRegion = leafNode.getTextRegion();
		return new HoverContext(document, resource, offset, leafRegion, crossLinkedEObject);
	}
	EObject element = eObjectAtOffsetHelper.resolveElementAt(resource, offset);
	if (element == null) {
		return null;
	}
	ITextRegion region = locationInFileProvider.getSignificantTextRegion(element);
	return new HoverContext(document, resource, offset, region, element);
}

Source File: ParserBasedContentAssistContextFactory.java From xtext-eclipse with Eclipse Public License 2.0

5 votes

public ContentAssistContext[] create(ITextViewer viewer, int offset, XtextResource resource)
		throws BadLocationException {
	this.viewer = viewer;
	this.resource = resource;
	//This is called to make sure late initialization is done.
	if (resource instanceof DerivedStateAwareResource) {
		resource.getContents();
	}
	this.parseResult = resource.getParseResult();
	if (parseResult == null)
		throw new NullPointerException("parseResult is null");
	return doCreateContexts(offset);
}

Source File: XbaseHighlightingCalculator.java From xtext-extras with Eclipse Public License 2.0

5 votes

@Override
protected void doProvideHighlightingFor(XtextResource resource, IHighlightedPositionAcceptor acceptor,
		CancelIndicator cancelIndicator) {
	IParseResult parseResult = resource.getParseResult();
	if (parseResult == null)
		throw new IllegalStateException("resource#parseResult may not be null");
	ICompositeNode node = parseResult.getRootNode();
	highlightSpecialIdentifiers(acceptor, node);
	super.doProvideHighlightingFor(resource, acceptor, cancelIndicator);
}

Source File: JSONSemanticHighlightingCalculator.java From n4js with Eclipse Public License 1.0

5 votes

@Override
public void provideHighlightingFor(XtextResource resource, IHighlightedPositionAcceptor acceptor,
		CancelIndicator cancelIndicator) {
	if (resource == null || resource.getParseResult() == null) {
		// skip invalid resources
		return;
	}

	// obtain root node
	INode root = resource.getParseResult().getRootNode();

	for (INode node : root.getAsTreeIterable()) {
		EObject grammarElement = node.getGrammarElement();

		// special handling of the names of name-value-pairs in order to differentiate
		// keys and values
		if (grammarElement instanceof RuleCall && grammarElement.eContainer() instanceof Assignment
				&& ((RuleCall) grammarElement).getRule() == grammarAccess.getSTRINGRule()) {
			final Assignment assignment = ((Assignment) grammarElement.eContainer());

			// if the STRING value is assigned to the feature 'name' of NameValuePair
			if (assignment.getFeature().equals(JSONPackage.Literals.NAME_VALUE_PAIR__NAME.getName())) {
				// enable PROPERTY_NAME highlighting
				acceptor.addPosition(node.getOffset(), node.getLength(),
						JSONHighlightingConfiguration.PROPERTY_NAME_ID);
			} else {
				// otherwise enable string literal highlighting
				acceptor.addPosition(node.getOffset(), node.getLength(), JSONHighlightingConfiguration.STRING_ID);
			}
		}
	}
}

Source File: AbstractXtextTests.java From xtext-extras with Eclipse Public License 2.0

4 votes

protected void checkNodeModel(XtextResource resource) {
	IParseResult parseResult = resource.getParseResult();
	if(parseResult != null)
		getInvariantChecker().checkInvariant(parseResult.getRootNode());
}

Source File: AbstractXtextTests.java From xtext-eclipse with Eclipse Public License 2.0

4 votes

protected void checkNodeModel(XtextResource resource) {
	IParseResult parseResult = resource.getParseResult();
	if(parseResult != null)
		getInvariantChecker().checkInvariant(parseResult.getRootNode());
}

Java Code Examples for org.eclipse.xtext.resource.XtextResource#getParseResult()