Base class for function types. More...

#include <FunctionBase.h>

Inheritance diagram for CXXR::FunctionBase:

Collaboration diagram for CXXR::FunctionBase:

Public Member Functions
virtual RObject *	apply (ArgList arglist, Environment env, const Expression *call) const =0
	Apply the function.
void	maybeTrace (const Expression *call) const
	Produce a tracing report if appropriate.
void	setTracing (bool on)
	Set tracing status.
bool	traced () const
	Is this function being traced?
Public Member Functions inherited from CXXR::RObject
virtual const PairList *	attributes () const
	Get object attributes.
virtual void	clearAttributes ()
	Remove all attributes.
virtual RObject *	clone () const
	Return pointer to a copy of this object.
void	copyAttribute (const Symbol name, const RObject source)
	Copy an attribute from one RObject to another.
void	copyAttributes (const RObject *source, bool copyS4)
	Copy attributes from one RObject to another.
virtual RObject *	evaluate (Environment *env)
	Evaluate object in a specified Environment.
virtual RObject *	getAttribute (const Symbol *name) const
	Get the value a particular attribute.
virtual bool	hasAttributes () const
	Has this object any attributes?
bool	hasClass () const
	Has this object the class attribute?
bool	isS4Object () const
	Is this an S4 object?
void	maybeTraceMemory (const RObject *src)
	Carry out memory tracing.
void	maybeTraceMemory (const RObject src1, const RObject src2)
	Carry out memory tracing.
void	maybeTraceMemory (const RObject src1, const RObject src2, const RObject *src3)
	Carry out memory tracing.
bool	memoryTraced () const
	Is copying etc. of this object being traced?
virtual unsigned int	packGPBits () const
	Reproduce the `gp` bits field used in CR.
virtual void	setAttribute (const Symbol name, RObject value)
	Set or remove an attribute.
void	setAttributes (const PairList *new_attributes)
	Replace the attributes of an object.
void	setMemoryTracing (bool on)
	Enable/disable tracing of copying etc.
void	setS4Object (bool on)
	Set the status of this RObject as an S4 object.
SEXPTYPE	sexptype () const
	Get an object's SEXPTYPE.
virtual const char *	typeName () const
	Name within R of this type of object.
virtual void	unpackGPBits (unsigned int gpbits)
	Interpret the `gp` bits field used in CR.
void	detachReferents ()
	Null out all references from this node to other nodes.
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.

Static Public Member Functions
static void	enableTracing (bool on)
	Enable/disable function tracing.
static bool	isA (const RObject *obj)
	Is an RObject a FunctionBase?
static const char *	staticTypeName ()
	The name by which this type is known in R.
static bool	tracingEnabled ()
	If function tracing currently enabled?
Static Public Member Functions inherited from CXXR::RObject
template<class T >
static T *	clone (const T *pattern)
	Return a pointer to a copy of an object.
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
	FunctionBase (SEXPTYPE stype)
	FunctionBase (const FunctionBase &pattern)
	Copy constructor.
Protected Member Functions inherited from CXXR::RObject
	RObject (SEXPTYPE stype=CXXSXP)
	RObject (const RObject &pattern)
	Copy constructor.
Protected Member Functions inherited from CXXR::GCNode
virtual	~GCNode ()
Protected Member Functions inherited from CXXR::HeterogeneousListBase::Link
virtual	~Link ()

Friends
class	boost::serialization::access

Additional Inherited Members
Public Attributes inherited from CXXR::RObject
unsigned char	m_named
unsigned	m_missing: 2
unsigned	m_argused: 2
bool	m_active_binding: 1
bool	m_binding_locked: 1

Detailed Description

Base class for function types.

Constructor & Destructor Documentation

CXXR::FunctionBase::FunctionBase ( SEXPTYPE stype )

inlineexplicitprotected

Parameters:

stype Required type of the FunctionBase.

CXXR::FunctionBase::FunctionBase ( const FunctionBase & pattern )

inlineprotected

Copy constructor.

Parameters:

pattern FunctionBase to be copied.

Member Function Documentation

virtual RObject* CXXR::FunctionBase::apply	(	ArgList *	arglist,
		Environment *	env,
		const Expression *	call
	)		const

pure virtual

Apply the function.

Parameters:

arglist	Non-null pointer to the ArgList containing the list of arguments with which the function is to be invoked.
env	Pointer to the Environment in which the function is to be evaluated.
call	Pointer to the Expression calling the function.

Returns:: The result of applying the function.

Implemented in CXXR::BuiltInFunction, and CXXR::Closure.

static void CXXR::FunctionBase::enableTracing ( bool on )

inlinestatic

Enable/disable function tracing.

Parameters:

on	True iff function tracing is to be enabled.

static bool CXXR::FunctionBase::isA ( const RObject * obj )

inlinestatic

Is an RObject a FunctionBase?

Parameters:

obj	Pointer to RObject to be tested. This may be a null pointer, in which case the function returns false.

Returns:: true iff obj is a FunctionBase.

void CXXR::FunctionBase::maybeTrace ( const Expression * call ) const

inline

Produce a tracing report if appropriate.

A tracing report is generated if this function is set to be traced and tracing in general is enabled.

Parameters:

call	The call to this function to be reported.

void CXXR::FunctionBase::setTracing ( bool on )

inline

Set tracing status.

Parameters:

on	True iff it is required to monitor calls to this function object.

static const char* CXXR::FunctionBase::staticTypeName ( )

inlinestatic

The name by which this type is known in R.

Returns:: the name by which this type is known in R.

Reimplemented in CXXR::BuiltInFunction, and CXXR::Closure.

bool CXXR::FunctionBase::traced ( ) const

inline

Is this function being traced?

Returns:: true if this function object is currently being traced.

static bool CXXR::FunctionBase::tracingEnabled ( )

inlinestatic

If function tracing currently enabled?

Returns:: true iff function tracing is currently enabled.

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

Public Member Functions

Static Public Member Functions

Protected Member Functions

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation