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

Example 26 with IParseResult

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

the class XtextStyledTextSelectionProvider method getSelection.

public ISelection getSelection() {
    if (styledText.isDisposed())
        return StructuredSelection.EMPTY;
    int offset = styledText.getCaretOffset() - 1;
    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);
}

Example 27 with IParseResult

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

the class AbstractFastLinkingService method getUsedGrammar.

/**
 * Tries to find a grammar.
 *
 * @param resourceSet
 *          to use for loading
 * @param grammarName
 *          qualified grammar name
 * @return A singleton list containing the grammar, or an empty list if not found.
 */
protected List<EObject> getUsedGrammar(final ResourceSet resourceSet, final String grammarName) {
    // copied from XtextLinkingService#getUsedGrammar()
    try {
        if (grammarName != null) {
            List<Resource> resources = resourceSet.getResources();
            for (int i = 0; i < resources.size(); i++) {
                Resource resource = resources.get(i);
                EObject rootElement = null;
                if (resource instanceof XtextResource) {
                    IParseResult parseResult = ((XtextResource) resource).getParseResult();
                    if (parseResult != null) {
                        rootElement = parseResult.getRootASTElement();
                    }
                } else if (!resource.getContents().isEmpty()) {
                    rootElement = resource.getContents().get(0);
                }
                if (rootElement instanceof Grammar) {
                    Grammar otherGrammar = (Grammar) rootElement;
                    if (grammarName.equals(otherGrammar.getName())) {
                        if (resource instanceof DerivedStateAwareResource) {
                            resource.getContents();
                        }
                        return Collections.<EObject>singletonList(otherGrammar);
                    }
                }
            }
            // $NON-NLS-1$ //$NON-NLS-2$
            URI classpathURI = URI.createURI(ClasspathUriUtil.CLASSPATH_SCHEME + ":/" + grammarName.replace('.', '/') + ".xtext");
            URI normalizedURI = null;
            if (resourceSet instanceof XtextResourceSet) {
                XtextResourceSet set = (XtextResourceSet) resourceSet;
                normalizedURI = set.getClasspathUriResolver().resolve(set.getClasspathURIContext(), classpathURI);
            } else {
                normalizedURI = resourceSet.getURIConverter().normalize(classpathURI);
            }
            final Resource resource = resourceSet.getResource(normalizedURI, true);
            if (!resource.getContents().isEmpty()) {
                final Grammar usedGrammar = (Grammar) resource.getContents().get(0);
                if (grammarName.equals(usedGrammar.getName())) {
                    return Collections.<EObject>singletonList(usedGrammar);
                }
            }
        }
        return Collections.emptyList();
    } catch (ClasspathUriResolutionException e) {
        return Collections.emptyList();
    } catch (ValueConverterException e) {
        return Collections.emptyList();
    }
}

Example 28 with IParseResult

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

the class PasteJavaCodeHandler method doPasteJavaCode.

private void doPasteJavaCode(final XtextEditor activeXtextEditor, final String javaCode, final JavaImportData javaImports) throws ExecutionException {
    ISourceViewer sourceViewer = activeXtextEditor.getInternalSourceViewer();
    final IXtextDocument xtextDocument = activeXtextEditor.getDocument();
    IJavaProject project = null;
    IEditorInput editorInput = activeXtextEditor.getEditorInput();
    if (editorInput instanceof IFileEditorInput) {
        IProject iProject = ((IFileEditorInput) editorInput).getFile().getProject();
        project = JavaCore.create(iProject);
    }
    final int selectionOffset = sourceViewer.getSelectedRange().x - 1;
    EObject targetElement = xtextDocument.readOnly(new IUnitOfWork<EObject, XtextResource>() {

        @Override
        public EObject exec(XtextResource state) throws Exception {
            IParseResult parseResult = state.getParseResult();
            if (parseResult == null) {
                return null;
            }
            ILeafNode leafNode = NodeModelUtils.findLeafNodeAtOffset(parseResult.getRootNode(), selectionOffset);
            return leafNode.getSemanticElement();
        }
    });
    JavaConverter javaConverter = javaConverterProvider.get();
    final String xtendCode = javaConverter.toXtend(javaCode, javaImports != null ? javaImports.getImports() : null, targetElement, project);
    if (!Strings.isEmpty(xtendCode)) {
        if (javaImports != null) {
            importsUtil.addImports(javaImports.getImports(), javaImports.getStaticImports(), new String[] {}, xtextDocument);
        }
        Point selection = sourceViewer.getSelectedRange();
        try {
            xtextDocument.replace(selection.x, selection.y, xtendCode);
        } catch (BadLocationException e) {
            throw new ExecutionException("Failed to replace content.", e);
        }
    // TODO enable formatting, when performance became better
    // https://bugs.eclipse.org/bugs/show_bug.cgi?id=457814
    // doFormat(sourceViewer, xtendCode, selection);
    }
}

Example 29 with IParseResult

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

the class PartialParserBenchmark method doTime.

public int doTime(IParser parser, int windowSize) {
    int result = 0;
    for (int j = 0; j < contentToParse.length() - windowSize; j++) {
        ReplaceRegion replaceRegion = new ReplaceRegion(new TextRegion(j, windowSize), contentToParse.substring(j, j + windowSize));
        IParseResult newParseResult = parser.reparse(parseResult, replaceRegion);
        if (newParseResult.getRootASTElement() != null) {
            result++;
        }
    }
    return result;
}

Example 30 with IParseResult

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

the class AnnotationValueParserBenchmark method timeAnnotationValueParsing.

public int timeAnnotationValueParsing(int reps) throws Exception {
    int result = 0;
    for (int i = 0; i < reps; i++) {
        StringReader reader = new StringReader(contentToParse);
        IParseResult parseResult = parser.parse(reader);
        result += parseResult.getRootNode().getLength();
    }
    return result;
}