/******************************************************************************\

CAMotics is an Open-Source simulation and CAM software.

Copyright (C) 2011-2019 Joseph Coffland <joseph@cauldrondevelopment.com>

This program 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.

This program 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 this program. If not, see <http://www.gnu.org/licenses/>.

\******************************************************************************/

#include "Reference.h"

#include <cmath>

using namespace std;

using namespace GCode;

address_t Reference::evalAddress(Evaluator &evaluator) {

double num = expr->eval(evaluator);

if (num < 1 || MAX_ADDRESS < num || !isfinite(num))

THROW(getLocation() << " Invalid reference number " << num);

// NOTE MSVC does not allow direct conversion from double to address_t

return addr = (address_t)(unsigned)round(num);

}

double Reference::eval(Evaluator &evaluator) {

evalAddress(evaluator);

return evaluator.eval(*this);

}

void Reference::print(ostream &stream) const {

stream << '#' << *expr;

}