Symbol.h File Reference

($Id: Symbol.h 1390 2013-06-11 14:41:41Z arr $)

Class CXXR::Symbol and associated C interface. More...

#include "CXXR/RObject.h"
#include "CXXR/GCRoot.h"
#include "CXXR/SEXP_downcast.hpp"
#include "CXXR/String.h"

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Classes
class	CXXR::Symbol
	Class used to represent R symbols. More...
class	CXXR::Symbol::const_iterator
	const_iterator for iterating over all standard Symbols. More...

Namespaces
namespace	CXXR
	Namespace for the CXXR project.

Functions
bool	CXXR::isDotSymbol (const Symbol *symbol)
	Does Symbol's name start with '.'?
bool	CXXR::isDotDotSymbol (const Symbol *symbol)
	Does Symbol's name start with '..'?
Rboolean	DDVAL (SEXP x)
	Does symbol relate to a ... expression?
SEXP	Rf_ddfindVar (SEXP symbol, SEXP rho)
SEXP	Rf_install (const char *name)
	Get a pointer to a regular Symbol object.
Rboolean	Rf_isSymbol (SEXP s)
	Test if SYMSXP.
SEXP	PRINTNAME (SEXP x)
	Symbol name.

Variables
SEXP	R_MissingArg
SEXP	R_UnboundValue
SEXP	R_Bracket2Symbol
SEXP	R_BracketSymbol
SEXP	R_BraceSymbol
SEXP	R_ClassSymbol
SEXP	R_ConnIdSymbol
SEXP	R_DeviceSymbol
SEXP	R_DevicesSymbol
SEXP	R_DimNamesSymbol
SEXP	R_DimSymbol
SEXP	R_DollarSymbol
SEXP	R_DotsSymbol
SEXP	R_DoubleColonSymbol
SEXP	R_DropSymbol
SEXP	R_LastvalueSymbol
SEXP	R_LevelsSymbol
SEXP	R_ModeSymbol
SEXP	R_NameSymbol
SEXP	R_NamesSymbol
SEXP	R_NaRmSymbol
SEXP	R_PackageSymbol
SEXP	R_QuoteSymbol
SEXP	R_RowNamesSymbol
SEXP	R_SeedsSymbol
SEXP	R_SourceSymbol
SEXP	R_TripleColonSymbol
SEXP	R_TspSymbol
SEXP	R_dot_Generic
SEXP	R_dot_Method
SEXP	R_dot_defined
SEXP	R_dot_target

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Detailed Description

Class CXXR::Symbol and associated C interface.

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Function Documentation

Rboolean DDVAL ( SEXP  x )

inline

Does symbol relate to a ... expression?

Parameters:

x	Pointer to a CXXR::Symbol (checked).

Returns:

TRUE iff this symbol denotes an element of a ... expression.

SEXP PRINTNAME ( SEXP  x )

inline

Symbol name.

Parameters:

x	Pointer to a CXXR::Symbol (checked).

Returns:

Pointer to a CXXR::String representing x's name.

SEXP Rf_ddfindVar	(	SEXP	symbol,
		SEXP	rho
	)

Find value of a ..n Symbol.

Parameters:

symbol	Pointer to a Symbol (checked) whose name is of the form ..n, where n is a positive integer.
rho	Pointer to an Environment, which must bind the symbol ... to a PairList comprising at least n elements. (All checked.)

Returns:

The 'car' of the nth element of the PairList to which ... is bound.

SEXP Rf_install ( const char *  name )

inline

Get a pointer to a regular Symbol object.

If no Symbol with the specified name currently exists, one will be created, and a pointer to it returned. Otherwise a pointer to the existing Symbol will be returned.

Parameters:

name	The name of the required Symbol (CE_NATIVE encoding is assumed).

Returns:

Pointer to a Symbol (preexisting or newly created) with the required name.

Rboolean Rf_isSymbol ( SEXP  s )

inline

Test if SYMSXP.

Parameters:

s	Pointer to a CXXR::RObject.

Returns:

TRUE iff s points to a CXXR::RObject with SEXPTYPE SYMSXP.