void getGroup(Group group, ElementType parent)
{
// This gets a choice or sequence.
bool moreCPs = true;
while (moreCPs)
{
discardWhitespace();
getContentParticle(group, parent);
discardWhitespace();
if (isChar('|'))
{
if (group.Type == ParticleType.Unknown)
{
group.Type = ParticleType.Choice;
}
else if (group.Type == ParticleType.Sequence)
{
throwXMLMiddlewareException("Invalid mixture of ',' and '|' in content model.");
}
}
else if (isChar(','))
{
if (group.Type == ParticleType.Unknown)
{
group.Type = ParticleType.Sequence;
}
else if (group.Type == ParticleType.Choice)
{
throwXMLMiddlewareException("Invalid mixture of ',' and '|' in content model.");
}
}
else if (isChar(')'))
{
moreCPs = false;
getFrequency(group);
// If there is a single content particle in the group,
// we simply call it a sequence.
if (group.Type == ParticleType.Unknown)
{
group.Type = ParticleType.Sequence;
}
}
}
group.FinaliseGroup();
}
