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

Example 66 with Keyword

use of org.eclipse.xtext.Keyword in project xtext-core by eclipse.

the class KeywordBasedValueConverter method setRule.

/**
 * @throws IllegalArgumentException if the rule is not a datatype rule or does not fulfill
 *   the pattern <pre>RuleName: 'keyword' | 'other';</pre>
 */
@Override
public void setRule(AbstractRule rule) {
    this.rule = rule;
    if (!GrammarUtil.isDatatypeRule(rule))
        throw new IllegalArgumentException(rule.getName() + " is not a data type rule");
    if (!(rule.getAlternatives() instanceof Alternatives) && !(rule.getAlternatives() instanceof Keyword)) {
        throw new IllegalArgumentException(rule.getName() + " is not a simple keyword nor an alternative");
    }
    if (rule.getAlternatives() instanceof Keyword) {
        keywords = ImmutableSet.of(keywordToString((Keyword) rule.getAlternatives()));
    } else {
        Alternatives alternatives = (Alternatives) rule.getAlternatives();
        ImmutableSet.Builder<String> builder = ImmutableSet.builder();
        for (AbstractElement element : alternatives.getElements()) {
            if (!(element instanceof Keyword)) {
                throw new IllegalArgumentException(rule.getName() + "'s body does not contain an alternative of keywords");
            }
            builder.add(keywordToString((Keyword) element));
        }
        keywords = builder.build();
    }
}

Example 67 with Keyword

use of org.eclipse.xtext.Keyword in project xtext-core by eclipse.

the class AbstractSyntacticSequencer method accept.

@SuppressWarnings("deprecation")
protected void accept(ISynState emitter, INode node, RuleCallStack stack) {
    switch(emitter.getType()) {
        case UNASSIGNED_PARSER_RULE_ENTER:
            RuleCall rc1 = (RuleCall) emitter.getGrammarElement();
            delegate.enterUnassignedParserRuleCall(rc1);
            stack.push(rc1);
            return;
        case UNASSIGNED_PARSER_RULE_EXIT:
            RuleCall rc2 = (RuleCall) emitter.getGrammarElement();
            delegate.leaveUnssignedParserRuleCall(rc2);
            RuleCall lastRc = stack.pop();
            if (lastRc != rc2) {
                if (errorAcceptor != null)
                    errorAcceptor.accept(diagnosticProvider.createUnexpectedStackStateDiagnostic(contexts.get(contexts.size() - 1).semanticObject, stack, lastRc, emitter));
            }
            return;
        case UNASSIGEND_ACTION_CALL:
            delegate.acceptUnassignedAction((Action) emitter.getGrammarElement());
            return;
        case UNASSIGEND_KEYWORD:
            Keyword keyword = (Keyword) emitter.getGrammarElement();
            String token = node != null ? node.getText() : keyword.getValue();
            delegate.acceptUnassignedKeyword(keyword, token, (ILeafNode) node);
            return;
        case UNASSIGNED_DATATYPE_RULE_CALL:
            RuleCall rc3 = (RuleCall) emitter.getGrammarElement();
            String value3 = getUnassignedRuleCallToken(rc3, node);
            delegate.acceptUnassignedDatatype(rc3, value3, (ICompositeNode) node);
            return;
        case UNASSIGNED_TERMINAL_RULE_CALL:
            RuleCall rc4 = (RuleCall) emitter.getGrammarElement();
            String value4 = getUnassignedRuleCallToken(rc4, node);
            delegate.acceptUnassignedTerminal(rc4, value4, (ILeafNode) node);
            return;
        case ASSIGNED_ACTION_CALL:
        case ASSIGNED_BOOLEAN_KEYWORD:
        case ASSIGNED_CROSSREF_DATATYPE_RULE_CALL:
        case ASSIGNED_CROSSREF_ENUM_RULE_CALL:
        case ASSIGNED_CROSSREF_KEYWORD:
        case ASSIGNED_CROSSREF_TERMINAL_RULE_CALL:
        case ASSIGNED_DATATYPE_RULE_CALL:
        case ASSIGNED_ENUM_RULE_CALL:
        case ASSIGNED_KEYWORD:
        case ASSIGNED_PARSER_RULE_CALL:
        case ASSIGNED_TERMINAL_RULE_CALL:
        case START:
        case STOP:
        case TRANSITION:
    }
    throw new RuntimeException("invalid state for emitting: " + emitter + " (" + emitter.getType() + ")");
}

Example 68 with Keyword

use of org.eclipse.xtext.Keyword in project xtext-core by eclipse.

the class NodeModelSemanticSequencer method createSequence.

@Override
public void createSequence(ISerializationContext context, EObject semanticObject) {
    SemanticNodeIterator ni = new SemanticNodeIterator(semanticObject);
    while (ni.hasNext()) {
        Triple<INode, AbstractElement, EObject> node = ni.next();
        if (node.getSecond() instanceof RuleCall) {
            RuleCall rc = (RuleCall) node.getSecond();
            TypeRef ruleType = rc.getRule().getType();
            if (ruleType == null || ruleType.getClassifier() instanceof EClass)
                acceptSemantic(semanticObject, rc, node.getThird(), node.getFirst());
            else if (GrammarUtil.containingCrossReference(node.getSecond()) != null) {
                EStructuralFeature feature = FeatureFinderUtil.getFeature(node.getSecond(), semanticObject.eClass());
                acceptSemantic(semanticObject, rc, semanticObject.eGet(feature), node.getFirst());
            } else {
                String strVal = NodeModelUtils.getTokenText(node.getFirst());
                Object val = valueConverter.toValue(strVal, ruleNames.getQualifiedName(rc.getRule()), node.getFirst());
                acceptSemantic(semanticObject, rc, val, node.getFirst());
            }
        } else if (node.getSecond() instanceof Keyword)
            acceptSemantic(semanticObject, node.getSecond(), node.getFirst().getText(), node.getFirst());
        else if (node.getSecond() instanceof Action) {
            acceptSemantic(semanticObject, node.getSecond(), semanticObject, node.getFirst());
        }
    }
}

Example 69 with Keyword

use of org.eclipse.xtext.Keyword in project xtext-core by eclipse.

the class EnumLiteralSerializer method serializeAssignedEnumLiteral.

@Override
public String serializeAssignedEnumLiteral(EObject context, RuleCall ruleCall, Object value, INode node, Acceptor errorAcceptor) {
    Keyword nodeLit = getLiteral(node);
    Keyword modelLit = getLiteral(context, ruleCall, value);
    if (modelLit == null) {
        if (errorAcceptor != null)
            errorAcceptor.accept(diagnosticProvider.getInvalidEnumValueDiagnostic(context, ruleCall, value));
        return null;
    } else if (nodeLit != null && nodeLit.equals(modelLit))
        return tokenUtil.serializeNode(node);
    else
        return modelLit.getValue();
}

Example 70 with Keyword

use of org.eclipse.xtext.Keyword in project xtext-core by eclipse.

the class ContentAssistContextFactory method isLikelyToBeValidProposal.

protected boolean isLikelyToBeValidProposal(INode lastCompleteNode, Iterable<ContentAssistContext> contexts) {
    for (ContentAssistContext context : contexts) {
        for (AbstractElement element : context.getFirstSetGrammarElements()) {
            if (element instanceof Keyword) {
                String keywordValue = ((Keyword) element).getValue();
                String lastText = ((ILeafNode) lastCompleteNode).getText();
                if (keywordValue.equals(lastText))
                    return true;
            }
        }
    }
    return false;
}