Angus Leeming wrote:
> Angus Leeming wrote:
>> Lars Gullik Bjønnes wrote:
>>> note the member function boost::any:type
>>
>> Bingo! No need for exceptions after all.
>> Many thanks, Lars.
>
> Next iteration. I think that this is ready to convert into InsetExternal
> code.
Hmmppfff! trying to do so, I get this
../../../boost/boost/any.hpp: In function `ValueType boost::any_cast(const
boost::any&) [with ValueType = lyx::external::RotationCommandFactory]':
../../../src/insets/ExternalTemplate.h:54: instantiated from `void
lyx::external::TransformStore::getTransformer(const Data&, Transformer&)
const [with Factory = lyx::external::RotationCommandFactory, Data =
lyx::external::RotationData, Transformer = std::auto_ptr<const
lyx::external::TransformCommand>]'
../../../src/insets/insetexternal.C:790: instantiated from here
../../../boost/boost/any.hpp:174: exception handling disabled, use
-fexceptions to enable
template<typename ValueType>
ValueType any_cast(const any & operand)
{
const ValueType * result = any_cast<ValueType>(&operand);
if(!result)
throw bad_any_cast();
return *result;
}
Could I insert
BOOST_ASSERT(result);
in its place please? The code is safe:
if (any_factory.type() != typeid(Factory) ||
any_data.type() != typeid(Data))
return;
Factory * factory = boost::any_cast<Factory>(any_factory);
if (!factory.empty())
transformer = factory(data);
--
Angus
