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

Example 61 with IParseResult

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

the class DefaultSemanticHighlightingCalculator method provideHighlightingFor.

@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);
}

Example 62 with IParseResult

use of org.eclipse.xtext.parser.IParseResult in project statecharts by Yakindu.

the class AbstractSCTResource method parse.

protected IParseResult parse(SpecificationElement element, String rule) {
    ParserRule parserRule = XtextFactory.eINSTANCE.createParserRule();
    parserRule.setName(rule);
    String specification = element.getSpecification();
    IParseResult result = parser.parse(parserRule, new StringReader(specification != null ? specification : ""));
    createDiagnostics(result, element);
    return result;
}

Example 63 with IParseResult

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

the class ContentFormatter method exec.

protected TextEdit exec(IXtextDocument document, IRegion region, XtextResource resource) throws Exception {
    try {
        IParseResult parseResult = resource.getParseResult();
        if (parseResult != null && parseResult.getRootASTElement() != null) {
            FormatterRequest request = requestProvider.get();
            initRequest(document, region, resource, request);
            IFormatter2 formatter = formatterProvider.get();
            List<ITextReplacement> replacements = formatter.format(request);
            final TextEdit mte = createTextEdit(replacements);
            return mte;
        }
    } catch (Exception e) {
        LOG.error("Error formatting " + resource.getURI() + ": " + e.getMessage(), e);
    }
    return new MultiTextEdit();
}

Example 64 with IParseResult

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

the class ExpressionUtil method findSelectedExpression.

/**
 * @return the smallest single expression containing the selection.
 */
public XExpression findSelectedExpression(XtextResource resource, ITextSelection selection) {
    IParseResult parseResult = resource.getParseResult();
    if (parseResult != null) {
        ICompositeNode rootNode = parseResult.getRootNode();
        INode node = NodeModelUtils.findLeafNodeAtOffset(rootNode, selection.getOffset());
        if (node == null) {
            return null;
        }
        if (isHidden(node)) {
            if (selection.getLength() > node.getLength()) {
                node = NodeModelUtils.findLeafNodeAtOffset(rootNode, node.getEndOffset());
            } else {
                node = NodeModelUtils.findLeafNodeAtOffset(rootNode, selection.getOffset() - 1);
            }
        } else if (node.getOffset() == selection.getOffset() && !isBeginOfExpression(node)) {
            node = NodeModelUtils.findLeafNodeAtOffset(rootNode, selection.getOffset() - 1);
        }
        if (node != null) {
            EObject currentSemanticElement = NodeModelUtils.findActualSemanticObjectFor(node);
            while (!(contains(currentSemanticElement, node, selection) && currentSemanticElement instanceof XExpression)) {
                node = nextNodeForFindSelectedExpression(currentSemanticElement, node, selection);
                if (node == null)
                    return null;
                currentSemanticElement = NodeModelUtils.findActualSemanticObjectFor(node);
            }
            return (XExpression) currentSemanticElement;
        }
    }
    return null;
}

Example 65 with IParseResult

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

the class AbstractEObjectHover method getXtextElementAt.

/**
 * Call this method only from within an IUnitOfWork
 */
protected Pair<EObject, IRegion> getXtextElementAt(XtextResource resource, final int offset) {
    // check for cross reference
    EObject crossLinkedEObject = eObjectAtOffsetHelper.resolveCrossReferencedElementAt(resource, offset);
    if (crossLinkedEObject != null) {
        if (!crossLinkedEObject.eIsProxy()) {
            IParseResult parseResult = resource.getParseResult();
            if (parseResult != 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) {
                    ITextRegion leafRegion = leafNode.getTextRegion();
                    return Tuples.create(crossLinkedEObject, (IRegion) new Region(leafRegion.getOffset(), leafRegion.getLength()));
                }
            }
        }
    } else {
        EObject o = eObjectAtOffsetHelper.resolveElementAt(resource, offset);
        if (o != null) {
            ITextRegion region = locationInFileProvider.getSignificantTextRegion(o);
            final IRegion region2 = new Region(region.getOffset(), region.getLength());
            if (TextUtilities.overlaps(region2, new Region(offset, 0)))
                return Tuples.create(o, region2);
        }
    }
    return null;
}