envir.cpp File Reference

($Id: envir.cpp 1367 2013-04-11 13:40:22Z arr $)

#include <config.h>
#include <functional>
#include <iostream>
#include "Defn.h"
#include <R_ext/Callbacks.h>
#include "CXXR/ProvenanceTracker.h"
#include "CXXR/ClosureContext.hpp"

Include dependency graph for envir.cpp:

Macros
#define	ISNULL(x)   ((x) == R_NilValue)
#define	simple_as_environment(arg)   (IS_S4_OBJECT(arg) && (TYPEOF(arg) == S4SXP) ? R_getS4DataSlot(arg, ENVSXP) : R_NilValue)

Functions
int attribute_hidden	R_Newhashpjw (const char *s)
SEXP	R_NewHashedEnv (SEXP enclos, SEXP size)
void attribute_hidden	InitGlobalEnv ()
void attribute_hidden	unbindVar (SEXP symbol, SEXP rho)
R_varloc_t	R_findVarLocInFrame (SEXP rho, SEXP symbol)
SEXP	R_GetVarLocValue (R_varloc_t vl)
SEXP	R_GetVarLocSymbol (R_varloc_t vl)
Rboolean	R_GetVarLocMISSING (R_varloc_t vl)
void	R_SetVarLocValue (R_varloc_t vl, SEXP value)
SEXP	findVarInFrame3 (SEXP rho, SEXP symbol, Rboolean)
SEXP	findVarInFrame (SEXP rho, SEXP symbol)
SEXP	findVar (SEXP symbol, SEXP rho)
SEXP attribute_hidden	findVar1 (SEXP symbol, SEXP rho, SEXPTYPE mode, int inherits)
SEXP	ddfindVar (SEXP symbol, SEXP rho)
SEXP	dynamicfindVar (SEXP symbol, ClosureContext *cptr)
SEXP	findFun (SEXP symbol, SEXP rho)
void	defineVar (SEXP symbol, SEXP value, SEXP rho)
void	setVar (SEXP symbol, SEXP value, SEXP rho)
void	gsetVar (SEXP symbol, SEXP value, SEXP rho)
SEXP attribute_hidden	do_assign (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_list2env (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_remove (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_get (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_mget (SEXP call, SEXP op, SEXP args, SEXP rho)
int attribute_hidden	R_isMissing (SEXP symbol, SEXP rho)
	Is a Symbol missing within an Environment?
SEXP attribute_hidden	do_missing (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_globalenv (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_baseenv (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_emptyenv (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_attach (SEXP call, SEXP op, SEXP args, SEXP env)
SEXP attribute_hidden	do_detach (SEXP call, SEXP op, SEXP args, SEXP env)
SEXP attribute_hidden	do_search (SEXP call, SEXP op, SEXP args, SEXP env)
SEXP attribute_hidden	do_ls (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP	R_lsInternal (SEXP env, Rboolean all)
SEXP attribute_hidden	do_env2list (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_eapply (SEXP call, SEXP op, SEXP args, SEXP rho)
int	envlength (SEXP rho)
SEXP attribute_hidden	do_builtins (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_pos2env (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_as_environment (SEXP call, SEXP op, SEXP args, SEXP rho)
void	R_LockEnvironment (SEXP env, Rboolean bindings)
Rboolean	R_EnvironmentIsLocked (SEXP env)
SEXP	do_lockEnv (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_envIsLocked (SEXP call, SEXP op, SEXP args, SEXP rho)
void	R_LockBinding (SEXP sym, SEXP env)
void	R_unLockBinding (SEXP sym, SEXP env)
void	R_MakeActiveBinding (SEXP sym, SEXP fun, SEXP env)
Rboolean	R_BindingIsLocked (SEXP sym, SEXP env)
Rboolean	R_BindingIsActive (SEXP sym, SEXP env)
Rboolean	R_HasFancyBindings (SEXP rho)
SEXP attribute_hidden	do_lockBnd (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_bndIsLocked (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_mkActiveBnd (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_bndIsActive (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_mkUnbound (SEXP call, SEXP op, SEXP args, SEXP rho)
Rboolean	R_IsPackageEnv (SEXP rho)
SEXP	R_PackageEnvName (SEXP rho)
SEXP	R_FindPackageEnv (SEXP info)
Rboolean	R_IsNamespaceEnv (SEXP rho)
SEXP attribute_hidden	do_isNSEnv (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP	R_NamespaceEnvSpec (SEXP rho)
SEXP	R_FindNamespace (SEXP info)
SEXP attribute_hidden	do_regNS (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_unregNS (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_getRegNS (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_getNSRegistry (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_importIntoEnv (SEXP call, SEXP op, SEXP args, SEXP rho)
SEXP attribute_hidden	do_envprofile (SEXP call, SEXP op, SEXP args, SEXP rho)

---

Detailed Description

Environments: all the action of associating values with symbols happens in this code.

---

Function Documentation

SEXP attribute_hidden do_list2env	(	SEXP	call,
		SEXP	op,
		SEXP	args,
		SEXP	rho
	)

do_list2env : .Internal(list2env(x, envir))

SEXP attribute_hidden do_mget	(	SEXP	call,
		SEXP	op,
		SEXP	args,
		SEXP	rho
	)

mget(): get multiple values from an environment

.Internal(mget(x, envir, mode, ifnotfound, inherits))

Returns:

a list of the same length as x, a character vector (of names).

int attribute_hidden R_isMissing	(	SEXP	symbol,
		SEXP	rho
	)

Is a Symbol missing within an Environment?

Parameters:

symbol	Pointer to the Symbol whose missing status is required.
rho	Pointer to the Environment in whose Frame symbol is to be sought.

Returns:

A non-zero value iff symbol is missing in the Frame of rho.

Note:

For more information, refer to the code, which is surprisingly complicated.