//

// Created by Vinayak Agarwal on 12/4/21.

//

#include "Variable.h"

#include <utility>

#include "../Clock/GlobalClock.h"

pair<int, string> Variable::getLatestValue() {

if (value.empty()) return {};

return value.back();

}

pair<int, string> Variable::getLatestValue(int time) {

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

if (it->first <= time) return *it;

}

return {};

}

void Variable::stageValue(string newValue) {

stagedValue = std::move(newValue);

stagingTime = GlobalClock::getTime();

}

void Variable::commitStagedValue() {

value.emplace_back(GlobalClock::getTime(), stagedValue);

isStale = false;

}

Variable::Variable(string var, string data) : var(std::move(var)) {

value.emplace_back(0, std::move(data));

isStale = false;

}

void Variable::markStale() {

isStale = true;

}

bool Variable::isDataStale() const {

return isStale;

}