Examples with CrossReference org.eclipse.xtext.CrossReference used on opensource projects

Example 46 with CrossReference

use of org.eclipse.xtext.CrossReference in project xtext-eclipse by eclipse.

the class XtextProposalProvider method completeTerminalRuleCall_Rule.

/**
 * Do not propose enum and parser rules inside of terminal rules.
 */
@Override
public void completeTerminalRuleCall_Rule(EObject model, Assignment assignment, ContentAssistContext context, ICompletionProposalAcceptor acceptor) {
    CrossReference crossReference = (CrossReference) assignment.getTerminal();
    lookupCrossReference(crossReference, context, acceptor, new Predicate<IEObjectDescription>() {

        @Override
        public boolean apply(IEObjectDescription input) {
            return input.getEClass() == XtextPackage.Literals.TERMINAL_RULE;
        }
    });
}

Example 47 with CrossReference

use of org.eclipse.xtext.CrossReference in project xtext-eclipse by eclipse.

the class DefaultReferenceUpdater method createReferenceUpdate.

protected void createReferenceUpdate(EObject referringElement, URI referringResourceURI, EReference reference, int indexInList, EObject newTargetElement, IRefactoringUpdateAcceptor updateAcceptor) {
    if (!transientValueService.isValueInListTransient(referringElement, indexInList, reference)) {
        ITextRegion referenceTextRegion = locationInFileProvider.getFullTextRegion(referringElement, reference, indexInList);
        if (referenceTextRegion != null) {
            CrossReference crossReference = getCrossReference(referringElement, referenceTextRegion.getOffset());
            if (crossReference != null) {
                RefTextEvaluator refTextComparator = getRefTextEvaluator(referringElement, referringResourceURI, reference, indexInList, newTargetElement);
                String newReferenceText = crossReferenceSerializer.getCrossRefText(referringElement, crossReference, newTargetElement, refTextComparator, referenceTextRegion, updateAcceptor.getRefactoringStatus());
                if (newReferenceText == null) {
                    newReferenceText = resolveNameConflict(referringElement, reference, newTargetElement, updateAcceptor);
                }
                if (newReferenceText == null) {
                    updateAcceptor.getRefactoringStatus().add(RefactoringStatus.ERROR, "Refactoring introduces a name conflict.", referringElement, referenceTextRegion);
                }
                createTextChange(referenceTextRegion, newReferenceText, referringElement, newTargetElement, reference, referringResourceURI, updateAcceptor);
            }
        }
    }
}

Example 48 with CrossReference

use of org.eclipse.xtext.CrossReference in project n4js by eclipse.

the class ContentAssistTokenTypeMapper method getInternalTokenType.

/**
 * Converts a grammar element to an Antlr token type (int).
 */
public int getInternalTokenType(EObject grammarElement) {
    Integer type = grammarElements.get(grammarElement);
    if (type == null) {
        if (grammarElement instanceof Keyword) {
            String keyword = ((Keyword) grammarElement).getValue();
            type = tokenTypes.get("'" + keyword + "'");
        } else if (grammarElement instanceof RuleCall) {
            AbstractRule rule = ((RuleCall) grammarElement).getRule();
            type = tokenTypes.get("RULE_" + rule.getName().toUpperCase());
        } else if (grammarElement instanceof AbstractRule) {
            AbstractRule rule = (AbstractRule) grammarElement;
            type = tokenTypes.get("RULE_" + rule.getName().toUpperCase());
        } else if (grammarElement instanceof EnumLiteralDeclaration) {
            String keyword = ((EnumLiteralDeclaration) grammarElement).getLiteral().getValue();
            type = tokenTypes.get("'" + keyword + "'");
        } else if (grammarElement instanceof CrossReference) {
            type = getInternalTokenType(((CrossReference) grammarElement).getTerminal());
        } else {
            throw new IllegalArgumentException(String.valueOf(grammarElement));
        }
        grammarElements.put(grammarElement, type);
    }
    return type;
}

Example 49 with CrossReference

use of org.eclipse.xtext.CrossReference in project n4js by eclipse.

the class TokenTypeRewriter method rewriteIdentifiers.

private static void rewriteIdentifiers(N4JSGrammarAccess ga, ImmutableMap.Builder<AbstractElement, Integer> builder) {
    ImmutableSet<AbstractRule> identifierRules = ImmutableSet.of(ga.getBindingIdentifierRule(), ga.getIdentifierNameRule(), ga.getIDENTIFIERRule());
    for (ParserRule rule : GrammarUtil.allParserRules(ga.getGrammar())) {
        for (EObject obj : EcoreUtil2.eAllContents(rule.getAlternatives())) {
            if (obj instanceof Assignment) {
                Assignment assignment = (Assignment) obj;
                AbstractElement terminal = assignment.getTerminal();
                int type = InternalN4JSParser.RULE_IDENTIFIER;
                if (terminal instanceof CrossReference) {
                    terminal = ((CrossReference) terminal).getTerminal();
                    type = IDENTIFIER_REF_TOKEN;
                }
                if (terminal instanceof RuleCall) {
                    AbstractRule calledRule = ((RuleCall) terminal).getRule();
                    if (identifierRules.contains(calledRule)) {
                        builder.put(assignment, type);
                    }
                }
            }
        }
    }
}

Example 50 with CrossReference

use of org.eclipse.xtext.CrossReference in project n4js by eclipse.

the class N4JSLinker method installProxies.

/**
 * Installs proxies for all non containment references and only if the node representing the EObject that contains
 * the cross reference has got leaf nodes (as a leaf node represents the cross reference).
 *
 * @param resource
 *            the N4JSResource
 * @param obj
 *            the EObject containing the cross reference
 * @param producer
 *            the error/warning producer
 * @param parentNode
 *            the node representing obj inside the node model
 */
private void installProxies(N4JSResource resource, EObject obj, IDiagnosticProducer producer, ICompositeNode parentNode, boolean dontCheckParent) {
    final EClass eClass = obj.eClass();
    if (eClass.getEAllReferences().size() - eClass.getEAllContainments().size() == 0)
        return;
    for (INode node = parentNode.getFirstChild(); node != null; node = node.getNextSibling()) {
        EObject grammarElement = node.getGrammarElement();
        if (grammarElement instanceof CrossReference && hasLeafNodes(node)) {
            producer.setNode(node);
            CrossReference crossReference = (CrossReference) grammarElement;
            final EReference eRef = GrammarUtil.getReference(crossReference, eClass);
            if (eRef == null) {
                ParserRule parserRule = GrammarUtil.containingParserRule(crossReference);
                final String feature = GrammarUtil.containingAssignment(crossReference).getFeature();
                throw new IllegalStateException("Couldn't find EReference for crossreference '" + eClass.getName() + "::" + feature + "' in parser rule '" + parserRule.getName() + "'.");
            }
            createAndSetProxy(resource, obj, node, eRef, crossReference, producer);
            afterCreateAndSetProxy(obj, node, eRef, crossReference, producer);
        } else if (grammarElement instanceof RuleCall && node instanceof ICompositeNode) {
            RuleCall ruleCall = (RuleCall) grammarElement;
            AbstractRule calledRule = ruleCall.getRule();
            if (calledRule instanceof ParserRule && ((ParserRule) calledRule).isFragment()) {
                installProxies(resource, obj, producer, (ICompositeNode) node, true);
            }
        }
    }
    if (!dontCheckParent && shouldCheckParentNode(parentNode)) {
        installProxies(resource, obj, producer, parentNode.getParent(), dontCheckParent);
    }
}