Stefan Scholz
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ETL
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variant< T1, T2, T3, T4, T5, T6, T7, T8 > Class Template Reference
[variant]
A template class that can store any of the types defined in the template parameter list. More...
#include <variant.h>
Data Structures | |
| class | reader_type |
| Base reader type functor class. More... | |
| class | reader_type< R1, no_type2, no_type3, no_type4, no_type5, no_type6, no_type7, no_type8 > |
| Define the reader type for 1 type. More... | |
| class | reader_type< R1, R2, no_type3, no_type4, no_type5, no_type6, no_type7, no_type8 > |
| Define the reader type for 2 types. More... | |
| class | reader_type< R1, R2, R3, no_type4, no_type5, no_type6, no_type7, no_type8 > |
| Define the reader type for 3 types. More... | |
| class | reader_type< R1, R2, R3, R4, no_type5, no_type6, no_type7, no_type8 > |
| Define the reader type for 4 types. More... | |
| class | reader_type< R1, R2, R3, R4, R5, no_type6, no_type7, no_type8 > |
| Define the reader type for 5 types. More... | |
| class | reader_type< R1, R2, R3, R4, R5, R6, no_type7, no_type8 > |
| Define the reader type for 6 types. More... | |
| class | reader_type< R1, R2, R3, R4, R5, R6, R7, no_type8 > |
| Define the reader type for 7 types. More... | |
| class | upcast_functor |
| Base upcast_functor for eight types. More... | |
| class | upcast_functor< TBase, U1, no_type2, no_type3, no_type4, no_type5, no_type6, no_type7, no_type8 > |
| Upcast_functor for one type. More... | |
| class | upcast_functor< TBase, U1, U2, no_type3, no_type4, no_type5, no_type6, no_type7, no_type8 > |
| Upcast_functor for two types. More... | |
| class | upcast_functor< TBase, U1, U2, U3, no_type4, no_type5, no_type6, no_type7, no_type8 > |
| Upcast_functor for three types. More... | |
| class | upcast_functor< TBase, U1, U2, U3, U4, no_type5, no_type6, no_type7, no_type8 > |
| Upcast_functor for four types. More... | |
| class | upcast_functor< TBase, U1, U2, U3, U4, U5, no_type6, no_type7, no_type8 > |
| Upcast_functor for five types. More... | |
| class | upcast_functor< TBase, U1, U2, U3, U4, U5, U6, no_type7, no_type8 > |
| Upcast_functor for six types. More... | |
| class | upcast_functor< TBase, U1, U2, U3, U4, U5, U6, U7, no_type8 > |
| Upcast_functor for seven types. More... | |
Public Types | |
| typedef reader_type< T1, T2, T3, T4, T5, T6, T7, T8 > | reader |
| The base type for derived readers. | |
Public Member Functions | |
| ~variant () | |
| Destructor. | |
| variant () | |
| Default constructor. | |
| template<typename T > | |
| variant (const T &value) | |
| Constructor that catches any types that are not supported. | |
| variant (const variant &other) | |
| Copy constructor. | |
| template<typename T > | |
| variant & | operator= (const T &value) |
| Assignment operator for T1 type. | |
| variant & | operator= (const variant &other) |
| Assignment operator for variant type. | |
| bool | is_same_type (const variant &other) const |
| Checks if the type is the same as the current stored type. | |
| template<typename U1 , typename U2 , typename U3 , typename U4 , typename U5 , typename U6 , typename U7 , typename U8 > | |
| bool | is_same_type (const variant< U1, U2, U3, U4, U5, U6, U7, U8 > &other) const |
| Checks if the type is the same as the current stored type. | |
| void | call (reader &reader) |
| Calls the supplied reader instance. | |
| bool | is_valid () const |
| Checks whether a valid value is currently stored. | |
| template<typename T > | |
| bool | is_type () const |
| Checks to see if the type currently stored is the same as that specified in the template parameter. | |
| void | clear () |
| Clears the value to 'no valid stored value'. | |
| template<typename T > | |
| T & | get () |
| Gets the value stored as the specified template type. | |
| template<typename T > | |
| const T & | get () const |
| Gets the value stored as the specified template type. | |
| template<typename TBase > | |
| TBase & | upcast () |
| Gets the value stored as the specified template type. | |
| template<typename TBase > | |
| const TBase & | upcast () const |
| Gets the value stored as the specified template type. | |
| operator T1 & () | |
| Conversion operators for each type. | |
Static Public Member Functions | |
| template<typename T > | |
| static bool | is_supported_type () |
| Checks if the template type is supported by the implementation of variant. | |
Detailed Description
template<typename T1, typename T2 = __private_variant__::no_type<2>, typename T3 = __private_variant__::no_type<3>, typename T4 = __private_variant__::no_type<4>, typename T5 = __private_variant__::no_type<5>, typename T6 = __private_variant__::no_type<6>, typename T7 = __private_variant__::no_type<7>, typename T8 = __private_variant__::no_type<8>>
class etl::variant< T1, T2, T3, T4, T5, T6, T7, T8 >
A template class that can store any of the types defined in the template parameter list.
Supports up to 8 types.
Definition at line 113 of file variant.h.
Member Typedef Documentation
| typedef reader_type<T1, T2, T3, T4, T5, T6, T7, T8> reader |
Constructor & Destructor Documentation
| variant | ( | ) |
| variant | ( | const T & | value ) |
Member Function Documentation
| void call | ( | reader & | reader ) |
| void clear | ( | ) |
| T& get | ( | ) |
Gets the value stored as the specified template type.
Throws a variant_incorrect_type_exception if the actual type is not that specified.
- Returns:
- A reference to the value.
| const T& get | ( | ) | const |
Gets the value stored as the specified template type.
Throws a variant_incorrect_type_exception if the actual type is not that specified.
- Returns:
- A const reference to the value.
| bool is_same_type | ( | const variant< T1, T2, T3, T4, T5, T6, T7, T8 > & | other ) | const |
| bool is_same_type | ( | const variant< U1, U2, U3, U4, U5, U6, U7, U8 > & | other ) | const |
| static bool is_supported_type | ( | ) | [static] |
| bool is_type | ( | ) | const |
| bool is_valid | ( | ) | const |
| variant& operator= | ( | const T & | value ) |
| TBase& upcast | ( | ) |
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