LLVM: llvm::TypeSwitch< T, ResultT > Class Template Reference (original) (raw)

This class implements a switch-like dispatch statement for a value of 'T' using dyn_cast functionality. More...

#include "[llvm/ADT/TypeSwitch.h](TypeSwitch%5F8h%5Fsource.html)"

Public Member Functions
	TypeSwitch (TypeSwitch &&other)=default
template<typename CaseT, typename CallableT>
TypeSwitch< T, ResultT > &	Case (CallableT &&caseFn)
	Add a case on the given type.
template
ResultT	Default (CallableT &&defaultFn)
	As a default, invoke the given callable within the root value.
ResultT	Default (ResultT defaultResult)
	As a default, return the given value.
template<typename ArgT = ResultT, typename = std::enable_if_t<std::is_constructible_v<ArgT, std::nullptr_t>>>
ResultT	Default (std::nullptr_t)
	Default for pointer-like results types that accept nullptr.
template<typename ArgT = ResultT, typename = std::enable_if_t<std::is_constructible_v<ArgT, std::nullopt_t>>>
ResultT	Default (std::nullopt_t)
	Default for optional results types that accept std::nullopt.
ResultT	DefaultUnreachable (const char *message="Fell off the end of a type-switch")
	Declare default as unreachable, making sure that all cases were handled.
	operator ResultT ()
Public Member Functions inherited from llvm::detail::TypeSwitchBase< TypeSwitch< T, void >, T >
	TypeSwitchBase (const T &value)
	TypeSwitchBase (TypeSwitchBase &&other)
	~TypeSwitchBase ()=default
	TypeSwitchBase (const TypeSwitchBase &)=delete
	TypeSwitchBase is not copyable.
void	operator= (const TypeSwitchBase &)=delete
void	operator= (TypeSwitchBase &&other)=delete
LLVM_ATTRIBUTE_ALWAYS_INLINE LLVM_ATTRIBUTE_NODEBUG TypeSwitch< T, void > &	Case (CallableT &&caseFn)
	Invoke a case on the derived class with multiple case types.
TypeSwitch< T, void > &	Case (CallableT &&caseFn)
	Invoke a case on the derived class, inferring the type of the Case from the first input of the given callable.

Additional Inherited Members
Static Protected Member Functions inherited from llvm::detail::TypeSwitchBase< TypeSwitch< T, void >, T >
static decltype(auto)	castValue (ValueT &&value)
	Attempt to dyn_cast the given value to CastT.
Protected Attributes inherited from llvm::detail::TypeSwitchBase< TypeSwitch< T, void >, T >
const T	value
	The root value we are switching on.

template<typename T, typename ResultT = void>
class llvm::TypeSwitch< T, ResultT >

This class implements a switch-like dispatch statement for a value of 'T' using dyn_cast functionality.

Each Case takes a callable to be invoked if the root value isa, the callable is invoked with the result of dyn_cast() as a parameter.

Example: Operation *op = ...; LogicalResult result = TypeSwitch<Operation *, LogicalResult>(op) .Case([](ConstantOp op) { ... }) .Default([](Operation *op) { ... });

Definition at line 88 of file TypeSwitch.h.