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// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; indent-tabs-mode: nil; -*-
//
// misc.cpp: Rcpp R/C++ interface class library -- misc unit tests
//
// Copyright (C) 2013 - 2022 Dirk Eddelbuettel and Romain Francois
//
// This file is part of Rcpp.
//
// Rcpp is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// Rcpp is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Rcpp. If not, see <http://www.gnu.org/licenses/>.
// [[Rcpp::plugins(cpp11)]]
#include <Rcpp.h>
using namespace Rcpp;
// Class that indicates to R caller whether C++ stack was unwound
struct unwindIndicator {
unwindIndicator(Environment indicator_) {
// Reset the indicator to NULL
indicator = indicator_;
indicator["unwound"] = R_NilValue;
}
// Set indicator to TRUE when stack unwinds
~unwindIndicator() {
indicator["unwound"] = LogicalVector::create(1);
}
Environment indicator;
};
// [[Rcpp::export]]
SEXP testFastEval(RObject expr, Environment env, Environment indicator) {
unwindIndicator my_data(indicator);
return Rcpp::Rcpp_fast_eval(expr, env);
}
// [[Rcpp::export]]
SEXP testSendInterrupt() {
Rf_onintr();
return R_NilValue;
}
SEXP maybeThrow(void* data) {
bool* fail = (bool*) data;
if (*fail)
Rf_error("throw!");
else
return NumericVector::create(42);
}
// [[Rcpp::export]]
SEXP testUnwindProtect(Environment indicator, bool fail) {
unwindIndicator my_data(indicator);
SEXP out = R_NilValue;
#ifdef RCPP_USING_UNWIND_PROTECT
out = Rcpp::unwindProtect(&maybeThrow, &fail);
#endif
return out;
}
// [[Rcpp::export]]
SEXP testUnwindProtectLambda(Environment indicator, bool fail) {
unwindIndicator my_data(indicator);
SEXP out = R_NilValue;
#ifdef RCPP_USING_UNWIND_PROTECT
out = Rcpp::unwindProtect([&] () { return maybeThrow(&fail); });
#endif
return out;
}
struct FunctionObj {
FunctionObj(int data_, bool fail_) : data(data_), fail(fail_) { }
SEXP operator() () {
NumericVector x = maybeThrow(&fail);
x[0] = x[0] * data;
return x;
}
int data;
bool fail;
};
// [[Rcpp::export]]
SEXP testUnwindProtectFunctionObject(Environment indicator, bool fail) {
unwindIndicator my_data(indicator);
SEXP out = R_NilValue;
#ifdef RCPP_USING_UNWIND_PROTECT
out = Rcpp::unwindProtect(FunctionObj(10, fail));
#endif
return out;
}
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