Lightweight implementation of CXXR::Frame. More...

#include <ListFrame.hpp>

Inheritance diagram for CXXR::ListFrame:

Collaboration diagram for CXXR::ListFrame:

Public Member Functions
Binding *	binding (const Symbol *symbol)
	Access binding of an already-defined Symbol.
const Binding *	binding (const Symbol *symbol) const
	Access const binding of an already-defined Symbol.
BindingRange	bindingRange () const
	Obtain a BindingRange for this Frame.
ListFrame *	clone () const
	Return pointer to a copy of this Frame.
void	lockBindings ()
	Lock all Bindings in this Frame.
std::size_t	size () const
	Number of Bindings in Frame.
Public Member Functions inherited from CXXR::Frame
	Frame (const Frame &source)
	Copy constructor.
PairList *	asPairList () const
	Get contents as a PairList.
Binding *	bind (const Symbol symbol, RObject value, Frame::Binding::Origin origin=Frame::Binding::EXPLICIT)
	Bind a Symbol to a specified value.
void	clear ()
	Remove all symbols from the Frame.
void	enableReadMonitoring (bool on) const
	Enable monitored reading of Symbol values.
void	enableWriteMonitoring (bool on) const
	Enable monitored writing of Symbol values.
bool	erase (const Symbol *symbol)
	Remove the Binding (if any) of a Symbol.
bool	isLocked () const
	Is the Frame locked?
void	lock (bool lock_bindings)
	Lock this Frame.
Binding *	obtainBinding (const Symbol *symbol)
	Get or create a Binding for a Symbol.
std::vector< const Symbol * >	symbols (bool include_dotsymbols) const
	Symbols bound by this Frame.
void	visitReferents (const_visitor *v) const
	Conduct a visitor to the nodes referred to by this one.
Public Member Functions inherited from CXXR::GCNode
void	expose () const
	Record that construction of a node is complete.
bool	isExposed () const
	Has this node been exposed to garbage collection?
Public Member Functions inherited from CXXR::HeterogeneousListBase::Link
	Link ()
	Default constructor.
	Link (HeterogeneousListBase *list)
	Appending constructor.
void	freeLink ()
	Detach Link from any list.

Friends
class	boost::serialization::access

Additional Inherited Members
Public Types inherited from CXXR::Frame
typedef boost::any_range < const Binding, boost::forward_traversal_tag, const Binding &, std::ptrdiff_t >	BindingRange
	Allow iteration over a Frame object's Bindings.
typedef void(*	monitor )(const Binding &)
	Function type for read and write monitors.
Static Public Member Functions inherited from CXXR::Frame
static monitor	setReadMonitor (monitor new_monitor)
	Define function to monitor reading of Symbol values.
static monitor	setWriteMonitor (monitor new_monitor)
	Define function to monitor writing of Symbol values.
Static Public Member Functions inherited from CXXR::GCNode
static void *	operator new (size_t bytes)
	Allocate memory.
static void *	operator new (size_t, void *where)
	Placement new for GCNode.
static void	operator delete (void *p, size_t bytes)
	Deallocate memory.
static bool	check ()
	Integrity check.
template<class T >
static T *	expose (T *node)
	Record that construction of a node is complete.
static void	gc ()
	Initiate a garbage collection.
static void	gclite ()
	Lightweight garbage collection.
static void	maybeCheckExposed (const GCNode *node)
	Subject to configuration, check that a GCNode is exposed.
static size_t	numNodes ()
	Number of GCNode objects in existence.
Protected Member Functions inherited from CXXR::Frame
void	statusChanged (const Symbol *sym)
	Report change in the bound/unbound status of Symbol objects.
void	detachReferents ()
	Null out all references from this node to other nodes.
Protected Member Functions inherited from CXXR::GCNode
virtual	~GCNode ()
Protected Member Functions inherited from CXXR::HeterogeneousListBase::Link
virtual	~Link ()

Detailed Description

Lightweight implementation of CXXR::Frame.

This implementation is intended for Frames containing only a small number of Bindings. Look-up time is linear in the number of Bindings.

Member Function Documentation

Frame::Binding * ListFrame::binding ( const Symbol * symbol )

virtual

Access binding of an already-defined Symbol.

This function provides a pointer to the Binding of a Symbol. In this variant the pointer is non-const, and consequently the calling code can use it to modify the Binding (provided the Binding is not locked).

Parameters:

symbol The Symbol for which a mapping is sought.

Returns:: A pointer to the required binding, or a null pointer if it was not found.

Implements CXXR::Frame.

const Frame::Binding * ListFrame::binding ( const Symbol * symbol ) const

virtual

Access const binding of an already-defined Symbol.

This function provides a pointer to a PairList element representing the binding of a symbol. In this variant the pointer is const, and consequently the calling code can use it only to examine the binding.

Parameters:

symbol The Symbol for which a mapping is sought.

Returns:: A pointer to the required binding, or a null pointer if it was not found..

Implements CXXR::Frame.

Frame::BindingRange ListFrame::bindingRange ( ) const

virtual

Obtain a BindingRange for this Frame.

Returns:: a BindingRange allowing read-only iteration over the Binding objects within this Frame.

Implements CXXR::Frame.

ListFrame * ListFrame::clone ( ) const

virtual

Return pointer to a copy of this Frame.

This function creates a copy of this Frame, and returns a pointer to that copy. The copy will define the same mapping from Symbols to R objects as this Frame; neither the R objects, nor of course the Symbols, are copied as part of the cloning.

The created copy will be locked if this Frame is locked. However, it will not have a read or write monitor.

Returns:: a pointer to a clone of this Frame.

Note:: Derived classes should exploit the covariant return type facility to return a pointer to the type of object being cloned.

Implements CXXR::Frame.

void ListFrame::lockBindings ( )

virtual

Lock all Bindings in this Frame.

This operation affects only Bindings currently existing. It does not prevent Bindings being added subsequently, and such Bindings will not be locked.

It is permitted to apply this function to a locked Frame.

Implements CXXR::Frame.

size_t ListFrame::size ( ) const

virtual

Number of Bindings in Frame.

Returns:: the number of Symbols for which Bindings exist in this Frame.

Implements CXXR::Frame.

The documentation for this class was generated from the following files:

Public Member Functions

Friends

Additional Inherited Members

Detailed Description

Member Function Documentation