Description

A passive container record holding the actual command arguments & UNDO state.

Effectively, this is the top level CmdClosure Implementation, which in turn delegates to sub-closures for the operation arguments and for UNDO management. While all command objects themselves have a common type (type erasure), the actual argument tuple and the state memento for UNDO can't. Especially, the size of arguments and memento will depend on their respective types. Thus, to manage somehow the storage of this data, we create a common holder, which can than be managed by a custom allocator / object pool.

See also: Command; CmdClosure storage of command arguments; MementoTie wiring of UNDO functions & memento; UndoMutation execution of UNDO; command-argument-test.cpp

Definition in file command-storage-holder.hpp.

#include "lib/typed-allocation-manager.hpp"
#include "steam/control/command-op-closure.hpp"
#include "steam/control/memento-tie.hpp"
#include "steam/control/command-impl-clone-builder.hpp"
#include "lib/opaque-holder.hpp"
#include <string>

Classes
class	StorageHolder< SIG, MEM >
	This is "the" top level CmdClosure implementation. More...

Namespaces
	steam
	Steam-Layer implementation namespace root.

	steam::control
	Steam-Layer dispatcher, controller and administrative facilities.

Description

Classes

Namespaces