Examples with SyntheticCompositeNode org.eclipse.xtext.nodemodel.impl.SyntheticCompositeNode used on opensource projects

Example 1 with SyntheticCompositeNode

use of org.eclipse.xtext.nodemodel.impl.SyntheticCompositeNode in project xtext-core by eclipse.

the class NodeModelUtilsTest method testFindLeafNodeAtOffset_1.

@Test
public void testFindLeafNodeAtOffset_1() throws Exception {
    String grammarText = "grammar foo.Bar with org.eclipse.xtext.common.Terminals generate foo 'bar' Model : (name=ID value=ID);";
    Grammar grammar = (Grammar) getModel(grammarText);
    int equalsSign = grammarText.indexOf('=');
    ICompositeNode grammarNode = NodeModelUtils.getNode(grammar);
    ILeafNode leafNodeAtOffset = NodeModelUtils.findLeafNodeAtOffset(grammarNode, equalsSign);
    assertEquals("=", leafNodeAtOffset.getText());
    boolean syntheticNodeSeen = false;
    INode parent = leafNodeAtOffset.getParent();
    while (parent != null) {
        // walk up the tree to make sure we call #findLeafNodeAtOffset with synthetic nodes, too
        ILeafNode otherLeafNode = NodeModelUtils.findLeafNodeAtOffset(parent, equalsSign);
        assertSame(leafNodeAtOffset, otherLeafNode);
        if (parent instanceof SyntheticCompositeNode)
            syntheticNodeSeen = true;
        parent = parent.getParent();
    }
    assertTrue(syntheticNodeSeen);
}

Example 2 with SyntheticCompositeNode

use of org.eclipse.xtext.nodemodel.impl.SyntheticCompositeNode in project xtext-core by eclipse.

the class TreeIteratorTest method testTreeIteratorForSyntheticNodes_Forward.

@Test
public void testTreeIteratorForSyntheticNodes_Forward() throws Exception {
    EObject object = getModel("(d - e) / e * d // fasdf s");
    ICompositeNode root = NodeModelUtils.getNode(object).getRootNode();
    INode firstChild = root.getFirstChild();
    INode firstGrandChild = ((ICompositeNode) firstChild).getFirstChild();
    INode firstGrandGrandChild = ((ICompositeNode) firstGrandChild).getFirstChild();
    INode firstGrandGrandGrandChild = ((ICompositeNode) firstGrandGrandChild).getFirstChild();
    INode synthetic = ((ICompositeNode) firstGrandGrandGrandChild).getFirstChild();
    assertTrue(synthetic instanceof SyntheticCompositeNode);
    INode expectedLastChild = ((ICompositeNode) synthetic).getLastChild();
    while (expectedLastChild instanceof ICompositeNode) expectedLastChild = ((ICompositeNode) expectedLastChild).getLastChild();
    INode lastChild = null;
    for (INode child : synthetic.getAsTreeIterable()) lastChild = child;
    assertEquals(expectedLastChild, lastChild);
}

Example 3 with SyntheticCompositeNode

use of org.eclipse.xtext.nodemodel.impl.SyntheticCompositeNode in project xtext-core by eclipse.

the class TreeIteratorTest method testTreeIteratorForSyntheticNodes_Backwards.

@Test
public void testTreeIteratorForSyntheticNodes_Backwards() throws Exception {
    EObject object = getModel("d - e / e * d");
    ICompositeNode root = NodeModelUtils.getNode(object).getRootNode();
    INode firstChild = root.getFirstChild();
    INode firstGrandChild = ((ICompositeNode) firstChild).getFirstChild();
    INode sibling = firstGrandChild.getNextSibling().getNextSibling().getNextSibling();
    INode siblingChild = ((ICompositeNode) sibling).getFirstChild();
    INode siblingGrandChild = ((ICompositeNode) siblingChild).getFirstChild();
    INode synthetic = ((ICompositeNode) siblingGrandChild).getFirstChild();
    assertTrue(synthetic instanceof SyntheticCompositeNode);
    INode expectedFirstChild = ((ICompositeNode) synthetic).getFirstChild();
    while (expectedFirstChild instanceof ICompositeNode) expectedFirstChild = ((ICompositeNode) expectedFirstChild).getFirstChild();
    INode actualFirstChild = null;
    for (INode child : synthetic.getAsTreeIterable().reverse()) actualFirstChild = child;
    assertEquals(expectedFirstChild, actualFirstChild);
}

Example 4 with SyntheticCompositeNode

use of org.eclipse.xtext.nodemodel.impl.SyntheticCompositeNode in project n4js by eclipse.

the class OutlineXpectMethod method skipNodesInBetween.

private void skipNodesInBetween(Script script) throws Exception {
    if (script != null) {
        XtextResource resource = (XtextResource) script.eResource();
        ICompositeNode rootNode = resource.getParseResult().getRootNode();
        ReplaceRegion region = null;
        for (INode node : rootNode.getAsTreeIterable()) {
            if (node instanceof ICompositeNode && !(node instanceof SyntheticCompositeNode)) {
                ICompositeNode casted = (ICompositeNode) node;
                int offset = node.getTotalOffset();
                int length = node.getTotalLength();
                if (length != 0) {
                    if (casted.getFirstChild().equals(casted.getLastChild())) {
                        if (region == null || region.getOffset() != offset || region.getLength() != length) {
                            region = new ReplaceRegion(offset, length, "");
                            StringBuilder builder = new StringBuilder(rootNode.getText());
                            region.applyTo(builder);
                            processFile(builder.toString(), "skipNodesInBetween");
                        }
                    }
                }
            }
        }
    }
}

Example 5 with SyntheticCompositeNode

use of org.eclipse.xtext.nodemodel.impl.SyntheticCompositeNode in project xtext-core by eclipse.

the class PartialParsingHelper method reparse.

@Override
@SuppressWarnings({ "unchecked", "rawtypes" })
public IParseResult reparse(IParser parser, IParseResult previousParseResult, ReplaceRegion changedRegion) {
    if (parser == null)
        throw new NullPointerException("parser may not be null");
    if (previousParseResult == null) {
        throw new NullPointerException("previousParseResult and previousParseResult.rootNode may not be null");
    }
    ICompositeNode oldRootNode = previousParseResult.getRootNode();
    if (changedRegion.getEndOffset() > oldRootNode.getTotalLength()) {
        log.error("Invalid " + changedRegion + " originalLength=" + oldRootNode.getTotalLength());
        return fullyReparse(parser, previousParseResult, changedRegion);
    }
    if (changedRegion.getOffset() >= oldRootNode.getTotalLength() && changedRegion.getText().trim().length() == 0) {
        return fullyReparse(parser, previousParseResult, changedRegion);
    }
    ReplaceRegion replaceRegion;
    if (tokenRegionProvider != null) {
        replaceRegion = tokenRegionProvider.getTokenReplaceRegion(insertChangeIntoReplaceRegion(oldRootNode, changedRegion), changedRegion);
    } else {
        replaceRegion = changedRegion;
    }
    if (isNullEdit(oldRootNode, replaceRegion)) {
        return previousParseResult;
    }
    PartialParsingPointers parsingPointers = calculatePartialParsingPointers(previousParseResult, replaceRegion.getOffset(), replaceRegion.getLength());
    List<ICompositeNode> validReplaceRootNodes = parsingPointers.getValidReplaceRootNodes();
    ICompositeNode oldCompositeNode = null;
    String reparseRegion = "";
    for (int i = validReplaceRootNodes.size() - 1; i >= 0; --i) {
        oldCompositeNode = validReplaceRootNodes.get(i);
        if (!(oldCompositeNode instanceof SyntheticCompositeNode) && !isRangePartOfExceedingLookAhead((CompositeNode) oldCompositeNode, replaceRegion)) {
            boolean replaceAtEnd = oldCompositeNode.getTotalEndOffset() == replaceRegion.getEndOffset();
            reparseRegion = insertChangeIntoReplaceRegion(oldCompositeNode, replaceRegion);
            if (!"".equals(reparseRegion)) {
                if (!replaceAtEnd || !Character.isWhitespace(reparseRegion.charAt(reparseRegion.length() - 1))) {
                    if (log.isDebugEnabled()) {
                        log.debug("replace region: [" + oldCompositeNode.getTotalOffset() + " / length: " + oldCompositeNode.getTotalLength() + " of [" + oldRootNode.getTotalOffset() + " / lenght: " + oldRootNode.getTotalLength() + "]");
                    }
                    break;
                }
            }
        }
    }
    if (oldCompositeNode == null || reparseRegion.equals("") || oldCompositeNode == oldRootNode) {
        return fullyReparse(parser, previousParseResult, replaceRegion);
    }
    EObject entryRuleOrRuleCall = parsingPointers.findEntryRuleOrRuleCall(oldCompositeNode);
    IParseResult newParseResult = null;
    try {
        if (entryRuleOrRuleCall instanceof RuleCall)
            newParseResult = parser.parse((RuleCall) entryRuleOrRuleCall, new StringReader(reparseRegion), oldCompositeNode.getLookAhead());
        else
            newParseResult = parser.parse((ParserRule) entryRuleOrRuleCall, new StringReader(reparseRegion));
    } catch (ParseException exc) {
    }
    if (newParseResult == null || newParseResult.hasSyntaxErrors()) {
        // on error fully reparse
        return fullyReparse(parser, previousParseResult, replaceRegion);
    }
    if (oldRootNode.equals(oldCompositeNode)) {
        unloadSemanticObject(previousParseResult.getRootASTElement());
        return newParseResult;
    }
    EObject oldSemanticParentElement = oldCompositeNode.getParent().getSemanticElement();
    EObject oldSemanticElement = null;
    if (oldCompositeNode.hasDirectSemanticElement()) {
        oldSemanticElement = oldCompositeNode.getSemanticElement();
    } else {
        List<ICompositeNode> nodesEnclosingRegion = parsingPointers.getNodesEnclosingRegion();
        for (int i = nodesEnclosingRegion.size() - 1; i >= 0; --i) {
            ICompositeNode enclosingNode = nodesEnclosingRegion.get(i);
            if (enclosingNode == oldCompositeNode) {
                break;
            }
            if (enclosingNode.hasDirectSemanticElement())
                oldSemanticElement = enclosingNode.getSemanticElement();
        }
        if (oldSemanticElement == null)
            return fullyReparse(parser, previousParseResult, replaceRegion);
    }
    if (oldSemanticElement == oldSemanticParentElement) {
        throw new IllegalStateException("oldParent == oldElement");
    }
    if (oldSemanticParentElement != null) {
        EStructuralFeature feature = oldSemanticElement.eContainingFeature();
        if (feature == null)
            return fullyReparse(parser, previousParseResult, replaceRegion);
        oldSemanticParentElement = oldSemanticElement.eContainer();
        if (feature.isMany()) {
            List featureValueList = (List) oldSemanticParentElement.eGet(feature);
            int index = featureValueList.indexOf(oldSemanticElement);
            unloadSemanticObject(oldSemanticElement);
            EObject newSemanticObject = newParseResult.getRootASTElement();
            if (newSemanticObject != null) {
                featureValueList.set(index, newParseResult.getRootASTElement());
            } else {
                featureValueList.remove(index);
            }
        } else {
            unloadSemanticObject(oldSemanticElement);
            oldSemanticParentElement.eSet(feature, newParseResult.getRootASTElement());
        }
        ((ParseResult) newParseResult).setRootASTElement(previousParseResult.getRootASTElement());
    } else {
        unloadSemanticObject(oldSemanticElement);
    }
    if (oldCompositeNode != oldRootNode) {
        nodeModelBuilder.replaceAndTransferLookAhead(oldCompositeNode, newParseResult.getRootNode());
        ((ParseResult) newParseResult).setRootNode(oldRootNode);
        StringBuilder builder = new StringBuilder(oldRootNode.getText());
        replaceRegion.applyTo(builder);
        nodeModelBuilder.setCompleteContent(oldRootNode, builder.toString());
    }
    return newParseResult;
}