bool XsdSchemaChecker::particleEqualsRecursively(const XsdParticle::Ptr &particle, const XsdParticle::Ptr &otherParticle) const
{
// @see http://www.w3.org/TR/xmlschema11-1/#cos-particle-extend
//TODO: find out what 'properties' of a particle should be checked here...
if (particle->minimumOccurs() != otherParticle->minimumOccurs())
return false;
if (particle->maximumOccursUnbounded() != otherParticle->maximumOccursUnbounded())
return false;
if (particle->maximumOccurs() != otherParticle->maximumOccurs())
return false;
const XsdTerm::Ptr term = particle->term();
const XsdTerm::Ptr otherTerm = otherParticle->term();
if (term->isElement() && !(otherTerm->isElement()))
return false;
if (term->isModelGroup() && !(otherTerm->isModelGroup()))
return false;
if (term->isWildcard() && !(otherTerm->isWildcard()))
return false;
if (term->isElement()) {
const XsdElement::Ptr element = term;
const XsdElement::Ptr otherElement = otherTerm;
if (element->name(m_namePool) != otherElement->name(m_namePool))
return false;
if (element->type()->name(m_namePool) != otherElement->type()->name(m_namePool))
return false;
}
if (term->isModelGroup()) {
const XsdModelGroup::Ptr group = term;
const XsdModelGroup::Ptr otherGroup = otherTerm;
if (group->particles().count() != otherGroup->particles().count())
return false;
for (int i = 0; i < group->particles().count(); ++i) {
if (!particleEqualsRecursively(group->particles().at(i), otherGroup->particles().at(i)))
return false;
}
}
if (term->isWildcard()) {
}
return true;
}
/**
* 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;
}
QSet<XsdElement::Ptr> collectAllElements(const XsdParticle::Ptr &particle)
{
QSet<XsdElement::Ptr> elements;
const XsdTerm::Ptr term(particle->term());
if (term->isElement()) {
elements.insert(XsdElement::Ptr(term));
} else if (term->isModelGroup()) {
const XsdModelGroup::Ptr group(term);
for (int i = 0; i < group->particles().count(); ++i)
elements.unite(collectAllElements(group->particles().at(i)));
}
return elements;
}
/*
* 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;
}