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Reduce runtime calls into the new dynamic cast system by first making sure the type is polymorphic.

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Cleanup some std::cout calls
This commit is contained in:
Jason Turner
2010-08-02 02:30:41 +00:00
parent edee892cad
commit 8be4aa08db
3 changed files with 34 additions and 13 deletions
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18
include/chaiscript/dispatchkit/boxed_cast.hpp
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@@ -19,6 +19,7 @@
#include <boost/ref.hpp>
#include <boost/cstdint.hpp>
#include <boost/type_traits/add_const.hpp>
#include <boost/type_traits/is_polymorphic.hpp>
#include <boost/integer_traits.hpp>
namespace chaiscript
@@ -35,11 +36,18 @@ namespace chaiscript
try {
return detail::Cast_Helper<Type>::cast(bv);
} catch (const boost::bad_any_cast &) {
try {
// We will not catch any bad_boxed_dynamic_cast that is thrown, let the user get it
// either way, we are not responsible if it doesn't work
return detail::Cast_Helper<Type>::cast(boxed_dynamic_cast<Type>(bv));
} catch (const boost::bad_any_cast &) {
if (boost::is_polymorphic<typename Stripped_Type<Type>::type>::value)
{
try {
// We will not catch any bad_boxed_dynamic_cast that is thrown, let the user get it
// either way, we are not responsible if it doesn't work
return detail::Cast_Helper<Type>::cast(boxed_dynamic_cast<Type>(bv));
} catch (const boost::bad_any_cast &) {
throw bad_boxed_cast(bv.get_type_info(), typeid(Type));
}
} else {
// If it's not polymorphic, just throw the error, don't waste the time on the
// attempted dynamic_cast
throw bad_boxed_cast(bv.get_type_info(), typeid(Type));
}
}