Promise.cpp File Reference

($Id: Promise.cpp 1351 2013-03-08 15:12:28Z arr $)

Implementation of class CXXR::Promise and associated C interface. More...

#include "CXXR/Promise.h"
#include "localization.h"
#include "R_ext/Error.h"
#include "CXXR/Bailout.hpp"
#include "CXXR/GCStackRoot.hpp"
#include "CXXR/PlainContext.hpp"

Include dependency graph for Promise.cpp:

Namespaces
namespace	CXXR
	Namespace for the CXXR project.

Functions
SEXP	Rf_mkPROMISE (SEXP expr, SEXP rho)
	Create a CXXR::Promise object.
void	SET_PRVALUE (SEXP x, SEXP v)
	Set the value of a CXXR::Promise.

Variables
SEXP(*	CXXR::ForceNonInline::PRCODEp )(SEXP x) = PRCODE
SEXP(*	CXXR::ForceNonInline::PRENVp )(SEXP x) = PRENV
SEXP(*	CXXR::ForceNonInline::PRVALUEp )(SEXP x) = PRVALUE

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Detailed Description

Implementation of class CXXR::Promise and associated C interface.

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Function Documentation

SEXP Rf_mkPROMISE	(	SEXP	expr,
		SEXP	env
	)

Create a CXXR::Promise object.

Parameters:

expr	Expression to be evaluated to provide the value of the CXXR::Promise.
env	CXXR::Environment in which expr is to be evaluated.

void SET_PRVALUE	(	SEXP	x,
		SEXP	v
	)

Set the value of a CXXR::Promise.

Once the value is set to something other than R_UnboundValue, the environment pointer is set null.

Parameters:

x	Pointer to a CXXR::Promise (checked).
v	Pointer to the value to be assigned to the promise.

Todo:

Replace this with a method call to evaluate the promise.