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

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 "ProducerStack.h"

#include "ProgramProducer.h"

#include <gcode/parse/Parser.h>

using namespace GCode;

using namespace cb;

using namespace std;

void ProducerStack::push(const SmartPointer<Producer> &producer) {

producers.push_back(producer);

}

void ProducerStack::push(const InputSource &source) {push(new Parser(source));}

void ProducerStack::push(Program &program) {

push(new ProgramProducer(SmartPointer<Program>::Phony(&program)));

}

void ProducerStack::push(const string &gcode, const string &path) {

push(InputSource(gcode, path));

}

SmartPointer<Producer> ProducerStack::peek() {

if (empty()) THROW("ProducerStack empty");

return producers.back();

}

SmartPointer<Producer> ProducerStack::pop() {

SmartPointer<Producer> producer = peek();

producers.pop_back();

return producer;

}

void ProducerStack::unwind() {

// Unwind stack in correct order

while (!empty()) producers.pop_back();

}

bool ProducerStack::hasMore() const {

for (auto it = producers.rbegin(); it != producers.rend(); it++)

if ((*it)->hasMore()) return true;

return false;

}

cb::SmartPointer<Block> ProducerStack::next() {

while (!peek()->hasMore()) producers.pop_back();

if (empty()) THROW("ProducerStack empty");

return producers.back()->next();

}