Ejemplo n.º 1
0
/**
 * Internal helper method that checks if the given @p particle contains an element with the
 * same name and type twice.
 */
static bool hasDuplicatedElementsInternal(const XsdParticle::Ptr &particle, const NamePool::Ptr &namePool, ElementHash &hash, XsdElement::Ptr &conflictingElement)
{
    const XsdTerm::Ptr term = particle->term();
    if (term->isElement()) {
        const XsdElement::Ptr mainElement(term);
        XsdElement::WeakList substGroups = mainElement->substitutionGroups();
        if (substGroups.isEmpty())
            substGroups << mainElement.data();

        for (int i = 0; i < substGroups.count(); ++i) {
            const XsdElement::Ptr element(substGroups.at(i));
            if (hash.contains(element->name(namePool))) {
                if (element->type()->name(namePool) != hash.value(element->name(namePool))->type()->name(namePool)) {
                    conflictingElement = element;
                    return true;
                }
            } else {
                hash.insert(element->name(namePool), element);
            }
        }
    } else if (term->isModelGroup()) {
        const XsdModelGroup::Ptr group(term);
        const XsdParticle::List particles = group->particles();
        for (int i = 0; i < particles.count(); ++i) {
            if (hasDuplicatedElementsInternal(particles.at(i), namePool, hash, conflictingElement))
                return true;
        }
    }

    return false;
}
/*
 * Create the FSA according to Algorithm Tt(S) from http://www.ltg.ed.ac.uk/~ht/XML_Europe_2003.html
 */
XsdStateMachine<XsdTerm::Ptr>::StateId XsdStateMachineBuilder::buildTerm(const XsdTerm::Ptr &term, XsdStateMachine<XsdTerm::Ptr>::StateId endState)
{
    if (term->isWildcard()) { // 1
        const XsdStateMachine<XsdTerm::Ptr>::StateId b = m_stateMachine->addState(XsdStateMachine<XsdTerm::Ptr>::InternalState);
        m_stateMachine->addTransition(b, term, endState);
        return b;
    } else if (term->isElement()) { // 2
        const XsdStateMachine<XsdTerm::Ptr>::StateId b = m_stateMachine->addState(XsdStateMachine<XsdTerm::Ptr>::InternalState);
        m_stateMachine->addTransition(b, term, endState);

        const XsdElement::Ptr element(term);
        if (m_mode == CheckingMode) {
            const XsdElement::WeakList substGroups = element->substitutionGroups();
            for (int i = 0; i < substGroups.count(); ++i)
                m_stateMachine->addTransition(b, XsdElement::Ptr(substGroups.at(i)), endState);
        } else if (m_mode == ValidatingMode) {
            const XsdElement::WeakList substGroups = element->substitutionGroups();
            for (int i = 0; i < substGroups.count(); ++i) {
                if (XsdSchemaHelper::substitutionGroupOkTransitive(element, XsdElement::Ptr(substGroups.at(i)), m_namePool))
                    m_stateMachine->addTransition(b, XsdElement::Ptr(substGroups.at(i)), endState);
            }
        }

        return b;
    } else if (term->isModelGroup()) {
        const XsdModelGroup::Ptr group(term);

        if (group->compositor() == XsdModelGroup::ChoiceCompositor) { // 3
            const XsdStateMachine<XsdTerm::Ptr>::StateId b = m_stateMachine->addState(XsdStateMachine<XsdTerm::Ptr>::InternalState);

            for (int i = 0; i < group->particles().count(); ++i) {
                const XsdParticle::Ptr particle(group->particles().at(i));
                if (particle->maximumOccurs() != 0) {
                    const XsdStateMachine<XsdTerm::Ptr>::StateId state = buildParticle(particle, endState);
                    m_stateMachine->addEpsilonTransition(b, state);
                }
            }

            return b;
        } else if (group->compositor() == XsdModelGroup::SequenceCompositor) { // 4
            XsdStateMachine<XsdTerm::Ptr>::StateId currentStartState = endState;
            XsdStateMachine<XsdTerm::Ptr>::StateId currentEndState = endState;

            for (int i = (group->particles().count() - 1); i >= 0; --i) { // iterate reverse
                const XsdParticle::Ptr particle(group->particles().at(i));
                if (particle->maximumOccurs() != 0) {
                    currentStartState = buildParticle(particle, currentEndState);
                    currentEndState = currentStartState;
                }
            }

            return currentStartState;
        } else if (group->compositor() == XsdModelGroup::AllCompositor) {
            const XsdStateMachine<XsdTerm::Ptr>::StateId newStartState = m_stateMachine->addState(XsdStateMachine<XsdTerm::Ptr>::InternalState);

            const QList<XsdParticle::List> list = allCombinations(group->particles());

            for (int i = 0; i < list.count(); ++i) {
                XsdStateMachine<XsdTerm::Ptr>::StateId currentStartState = endState;
                XsdStateMachine<XsdTerm::Ptr>::StateId currentEndState = endState;

                const XsdParticle::List particles = list.at(i);
                for (int j = (particles.count() - 1); j >= 0; --j) { // iterate reverse
                    const XsdParticle::Ptr particle(particles.at(j));
                    if (particle->maximumOccurs() != 0) {
                        currentStartState = buildParticle(particle, currentEndState);
                        currentEndState = currentStartState;
                    }
                }
                m_stateMachine->addEpsilonTransition(newStartState, currentStartState);
            }

            if (list.isEmpty())
                return endState;
            else
                return newStartState;
        }
    }

    Q_ASSERT(false);
    return 0;
}