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This commit is contained in:
Aleksandar Fabijanic 2008-05-14 23:51:10 +00:00
parent 81fcb5cbf5
commit 0fe95a31c4
1 changed files with 15 additions and 8 deletions
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23
Foundation/include/Poco/Any.h
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@ -164,6 +164,12 @@ private:
template <typename ValueType> template <typename ValueType>
friend ValueType* UnsafeAnyCast(Any*); friend ValueType* UnsafeAnyCast(Any*);
template <typename ValueType>
friend ValueType& RefAnyCast(Any&);
template <typename ValueType>
friend const ValueType& RefAnyCast(const Any&);
Placeholder* _content; Placeholder* _content;
}; };
@ -208,7 +214,8 @@ ValueType AnyCast(const Any& operand)
/// these cases. /// these cases.
{ {
ValueType* result = AnyCast<ValueType>(const_cast<Any*>(&operand)); ValueType* result = AnyCast<ValueType>(const_cast<Any*>(&operand));
if (!result) throw BadCastException("Failed to convert between const Any types"); if (!result)
throw BadCastException("Failed to convert between const Any types");
return *result; return *result;
} }
@ -232,16 +239,16 @@ ValueType AnyCast(Any& operand)
template <typename ValueType> template <typename ValueType>
const ValueType& RefAnyCast(const Any & operand) const ValueType& RefAnyCast(const Any& operand)
/// AnyCast operator used to return a const reference to the internal data. /// AnyCast operator used to return a const reference to the internal data.
/// ///
/// Example Usage: /// Example Usage:
/// const MyType& tmp = RefAnyCast<MyType>(anAny); /// const MyType& tmp = RefAnyCast<MyType>(anAny);
{ {
ValueType* result = AnyCast<ValueType>(const_cast<Any*>(&operand)); if (operand.type() == typeid(ValueType))
if (!result) return static_cast<Any::Holder<ValueType>*>(operand._content)->_held;
else
throw BadCastException("RefAnyCast: Failed to convert between const Any types"); throw BadCastException("RefAnyCast: Failed to convert between const Any types");
return *result;
} }
@ -252,10 +259,10 @@ ValueType& RefAnyCast(Any& operand)
/// Example Usage: /// Example Usage:
/// MyType& tmp = RefAnyCast<MyType>(anAny); /// MyType& tmp = RefAnyCast<MyType>(anAny);
{ {
ValueType* result = AnyCast<ValueType>(&operand); if (operand.type() == typeid(ValueType))
if (!result) return static_cast<Any::Holder<ValueType>*>(operand._content)->_held;
else
throw BadCastException("RefAnyCast: Failed to convert between Any types"); throw BadCastException("RefAnyCast: Failed to convert between Any types");
return *result;
} }