Examples with ITextRegion org.eclipse.xtext.util.ITextRegion used on opensource projects

Example 66 with ITextRegion

use of org.eclipse.xtext.util.ITextRegion in project xtext-core by eclipse.

the class RegionDiffFormatter method collectRegionsToFormat.

protected Collection<ITextRegion> collectRegionsToFormat(ITextRegionAccessDiff regions) {
    List<ITextRegion> result = Lists.newArrayList();
    for (ITextSegmentDiff diff : regions.getRegionDifferences()) {
        int offset = diff.getModifiedFirstRegion().getOffset();
        int length = diff.getModifiedLastRegion().getEndOffset() - offset;
        ITextSegment region = regions.regionForOffset(offset, length);
        result.add(region);
    }
    return result;
}

Example 67 with ITextRegion

use of org.eclipse.xtext.util.ITextRegion in project xtext-core by eclipse.

the class DefaultFoldingRangeProvider method buildSignificantRegion.

protected ITextRegion buildSignificantRegion(ITextRegion significantRegion, INode node) {
    if (significantRegion == null || node == null) {
        return null;
    }
    int offset = significantRegion.getOffset();
    int endOffset = significantRegion.getOffset() + significantRegion.getLength();
    int startLine;
    int endLine;
    if (significantRegion instanceof ITextRegionWithLineInformation) {
        ITextRegionWithLineInformation lineInfoRegion = (ITextRegionWithLineInformation) significantRegion;
        startLine = lineInfoRegion.getLineNumber() + 1;
        endLine = lineInfoRegion.getEndLineNumber() + 1;
    } else {
        startLine = NodeModelUtils.getLineAndColumn(node, offset).getLine();
        endLine = NodeModelUtils.getLineAndColumn(node, endOffset).getLine();
    }
    if (startLine != endLine) {
        /*
			 * The Eclipse IDE can only use the significant region if it starts and ends on the same line.
			 * Therefore, we here calculate the index of the end of the line.
			 */
        for (int index = offset; index < endOffset; index++) {
            LineAndColumn lineInfo = NodeModelUtils.getLineAndColumn(node, index);
            if (lineInfo.getLine() != startLine) {
                return new TextRegion(offset, index - offset - 1);
            }
        }
    }
    return significantRegion;
}

Example 68 with ITextRegion

use of org.eclipse.xtext.util.ITextRegion 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 69 with ITextRegion

use of org.eclipse.xtext.util.ITextRegion 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 70 with ITextRegion

use of org.eclipse.xtext.util.ITextRegion in project xtext-core by eclipse.

the class DocumentExtensions method newLocation.

public Location newLocation(EObject object) {
    Resource resource = object.eResource();
    ITextRegion textRegion = locationInFileProvider.getSignificantTextRegion(object);
    return newLocation(resource, textRegion);
}