Examples with IParseResult org.eclipse.xtext.parser.IParseResult used on opensource projects

Example 56 with IParseResult

use of org.eclipse.xtext.parser.IParseResult in project xtext-core by eclipse.

the class PartialParsingProcessor method processFile.

@Override
public String processFile(String completeData, String data, int offset, int len, String change) throws Exception {
    IParseResult initialParseResult = parser.parse(new StringReader(data));
    String newData = applyDelta(data, offset, len, change);
    ReplaceRegion replaceRegion = new ReplaceRegion(offset, len, change);
    try {
        IParseResult reparsed = parser.reparse(initialParseResult, replaceRegion);
        IParseResult parsedFromScratch = parser.parse(new StringReader(newData));
        assertEqual(data, newData, parsedFromScratch, reparsed);
        return newData;
    } catch (Throwable e) {
        ComparisonFailure throwMe = new ComparisonFailure(e.getMessage(), newData, replaceRegion + DELIM + data);
        throwMe.initCause(e);
        throw throwMe;
    }
}

Example 57 with IParseResult

use of org.eclipse.xtext.parser.IParseResult in project xtext-core by eclipse.

the class TestLanguageRenameService method getElementWithIdentifierAt.

@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;
}

Example 58 with IParseResult

use of org.eclipse.xtext.parser.IParseResult in project xtext-core by eclipse.

the class DefaultDocumentHighlightService method getDocumentHighlights.

public List<DocumentHighlight> getDocumentHighlights(final XtextResource resource, final int offset) {
    if (resource == null) {
        if (LOGGER.isDebugEnabled()) {
            LOGGER.warn("Resource was null.");
        }
        return emptyList();
    }
    final URI uri = resource.getURI();
    if (offset < 0) {
        if (LOGGER.isDebugEnabled()) {
            LOGGER.warn("Invalid offset argument. Offset must be a non-negative integer for resource: " + uri);
        }
        return emptyList();
    }
    final IParseResult parseResult = resource.getParseResult();
    if (parseResult == null) {
        if (LOGGER.isDebugEnabled()) {
            LOGGER.warn("Parse result was null for resource: " + uri);
        }
        return emptyList();
    }
    final ICompositeNode rootNode = parseResult.getRootNode();
    final String docContent = rootNode.getText();
    final int docLength = docContent.length();
    if (offset >= docLength) {
        if (LOGGER.isDebugEnabled()) {
            LOGGER.warn("Offset exceeds document lenght. Document was " + docLength + " and offset was: " + offset + " for resource: " + uri);
        }
        return emptyList();
    }
    final EObject selectedElement = offsetHelper.resolveElementAt(resource, offset);
    if (!isDocumentHighlightAvailableFor(selectedElement, resource, offset)) {
        return emptyList();
    }
    final Supplier<Document> docSupplier = Suppliers.memoize(() -> new Document(UNUSED_VERSION, docContent));
    Iterable<URI> targetURIs = getTargetURIs(selectedElement);
    if (!(targetURIs instanceof TargetURIs)) {
        final TargetURIs result = targetURIsProvider.get();
        result.addAllURIs(targetURIs);
        targetURIs = result;
    }
    final Builder<DocumentHighlight> resultBuilder = ImmutableList.<DocumentHighlight>builder();
    final Acceptor acceptor = (Acceptor2) (source, sourceURI, eReference, index, targetOrProxy, targetURI) -> {
        final ITextRegion region = locationInFileProvider.getSignificantTextRegion(source, eReference, index);
        if (!isNullOrEmpty(region)) {
            resultBuilder.add(textRegionTransformer.apply(docSupplier.get(), region, DocumentHighlightKind.Read));
        }
    };
    referenceFinder.findReferences((TargetURIs) targetURIs, resource, acceptor, new NullProgressMonitor());
    if (resource.equals(selectedElement.eResource())) {
        final ITextRegion region = locationInFileProvider.getSignificantTextRegion(selectedElement);
        if (!isNullOrEmpty(region)) {
            resultBuilder.add(textRegionTransformer.apply(docSupplier.get(), region, DocumentHighlightKind.Write));
        }
    }
    return FluentIterable.from(resultBuilder.build()).toSortedList(comparator);
}

Example 59 with IParseResult

use of org.eclipse.xtext.parser.IParseResult in project xtext-core by eclipse.

the class HoverService method createContext.

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);
}

Example 60 with IParseResult

use of org.eclipse.xtext.parser.IParseResult in project xtext-core by eclipse.

the class DefaultSemanticHighlightingCalculator method searchAndHighlightElements.

protected void searchAndHighlightElements(XtextResource resource, IHighlightedPositionAcceptor acceptor, CancelIndicator cancelIndicator) {
    IParseResult parseResult = resource.getParseResult();
    if (parseResult == null)
        throw new IllegalStateException("resource#parseResult may not be null");
    EObject element = parseResult.getRootASTElement();
    highlightElementRecursively(element, acceptor, cancelIndicator);
}