/*
Synopsis: attempts to set a real form and dual real form interactively.
In case of failure, throws an InputError and returns.
*/
void repr_mode_entry() throw(EntryError)
{
try
{
RealReductiveGroup& GR = currentRealGroup();
Weight lambda_rho;
RatWeight gamma(0);
KGBElt x;
sub = new SubSystemWithGroup
(interactive::get_parameter(GR,x,lambda_rho,gamma));
Permutation pi;
std::cout << "Subsystem on dual side is ";
if (sub->rank()==0)
std::cout << "empty.\n";
else
{
std::cout << "of type "
<< dynkin::Lie_type(sub->cartanMatrix(),true,false,pi)
<< ", with roots ";
for (weyl::Generator s=0; s<sub->rank(); ++s)
std::cout << sub->parent_nr_simple(pi[s])
<< (s<sub->rank()-1 ? "," : ".\n");
}
sr = new
StandardRepr(currentRepContext().sr(x,lambda_rho,gamma));
}
catch(error::InputError& e)
{
repr_mode_exit(); // clean up
e("no parameter was set");
throw EntryError();
}
}
// AbstractEntry
AbstractEntry::AbstractEntry(std::string const& name) :
name_(std::regex_match(name, Entry::NameRegex) ?
name : throw EntryError("invalid command description: " + utils::string::quoted(name)))
{
}
