ChangeOperModeRAII Class Reference

Scope guard that temporarily changes the operation mode of one or more RooAbsArg instances.

Each call to change() records the arg's current operMode before flipping it to the requested mode (non-recursively, i.e. value clients are not touched). Destruction (or an explicit clear()) restores every recorded mode in LIFO order.

The class is movable but not copyable, so it can be returned from functions that build up a batch of changes to hand to the caller.

Definition at line 57 of file RooFitImplHelpers.h.

Public Member Functions
	ChangeOperModeRAII ()=default
	ChangeOperModeRAII (ChangeOperModeRAII &&)=default
	ChangeOperModeRAII (ChangeOperModeRAII const &)=delete
	ChangeOperModeRAII (RooAbsArg *arg, RooAbsArg::OperMode opMode)
	Convenience ctor: behaves like a scope guard for a single arg.
	~ChangeOperModeRAII ()
void	change (RooAbsArg *arg, RooAbsArg::OperMode opMode)
	Record arg's current operMode and flip it to opMode.
void	clear ()
	Restore every recorded change right away, emptying this guard.
bool	empty () const
ChangeOperModeRAII &	operator= (ChangeOperModeRAII &&)=default
ChangeOperModeRAII &	operator= (ChangeOperModeRAII const &)=delete

Private Attributes
std::vector< std::pair< RooAbsArg *, RooAbsArg::OperMode > >	_entries

#include </github/home/ROOT-CI/src/roofit/roofitcore/res/RooFitImplHelpers.h>

Constructor & Destructor Documentation

ChangeOperModeRAII() [1/4]

ChangeOperModeRAII::ChangeOperModeRAII ( )

default

ChangeOperModeRAII() [2/4]

ChangeOperModeRAII::ChangeOperModeRAII ( RooAbsArg * arg, RooAbsArg::OperMode opMode )

inline

Convenience ctor: behaves like a scope guard for a single arg.

Definition at line 62 of file RooFitImplHelpers.h.

~ChangeOperModeRAII()

ChangeOperModeRAII::~ChangeOperModeRAII ( )

inline

Definition at line 64 of file RooFitImplHelpers.h.

ChangeOperModeRAII() [3/4]

ChangeOperModeRAII::ChangeOperModeRAII ( ChangeOperModeRAII && )

default

ChangeOperModeRAII() [4/4]

ChangeOperModeRAII::ChangeOperModeRAII ( ChangeOperModeRAII const & )

delete

Member Function Documentation

change()

void ChangeOperModeRAII::change ( RooAbsArg * arg, RooAbsArg::OperMode opMode )

inline

Record arg's current operMode and flip it to opMode.

If the current mode already equals opMode, this is a no-op (nothing to restore).

Definition at line 73 of file RooFitImplHelpers.h.

clear()

void ChangeOperModeRAII::clear ( )

inline

Restore every recorded change right away, emptying this guard.

Definition at line 82 of file RooFitImplHelpers.h.

empty()

bool ChangeOperModeRAII::empty ( ) const

inline

Definition at line 90 of file RooFitImplHelpers.h.

operator=() [1/2]

ChangeOperModeRAII & ChangeOperModeRAII::operator= ( ChangeOperModeRAII && )

default

operator=() [2/2]

ChangeOperModeRAII & ChangeOperModeRAII::operator= ( ChangeOperModeRAII const & )

delete

Member Data Documentation

_entries

std::vector<std::pair<RooAbsArg *, RooAbsArg::OperMode> > ChangeOperModeRAII::_entries

private

Definition at line 93 of file RooFitImplHelpers.h.