Exemplos de exprt::make_nil em C++ (Cpp)

Exemplo n.º 1

Arquivo: cpp_typecheck_find_constructor.cpp Projeto: rbavishi/iCBMC

void cpp_typecheckt::find_constructor(
  const typet &start_dest_type,
  exprt &constructor_expr)
{
  constructor_expr.make_nil();

  source_locationt source_location=start_dest_type.source_location();
  typet dest_type(start_dest_type);
  follow_symbol(dest_type);

  if(dest_type.id()!=ID_struct)
    return;

  const struct_typet::componentst &components=
    to_struct_type(dest_type).components();

  for(struct_typet::componentst::const_iterator
      it=components.begin();
      it!=components.end();
      it++)
  {
    const struct_typet::componentt &component=*it;
    const typet &type=component.type();

    if(type.find(ID_return_type).id()==ID_constructor)
    {
      const irept::subt &parameters=
        type.find(ID_parameters).get_sub();

      namespacet ns(symbol_table);

      if(parameters.size()==1)
      {
        const exprt &parameter=(exprt &)parameters.front();
        const typet &arg_type=parameter.type();

        if(arg_type.id()==ID_pointer &&
           type_eq(arg_type.subtype(), dest_type, ns))
        {
          // found!
          const irep_idt &identifier=
            component.get(ID_name);

          if(identifier=="")
            throw "constructor without identifier";

          constructor_expr=exprt(ID_symbol, type);
          constructor_expr.set(ID_identifier, identifier);
          constructor_expr.add_source_location()=source_location;
          return;
        }
      }
    }
  }
}