Generic-Task-Planner/Condition.hpp at master · pparmesh/Generic-Task-Planner · GitHub

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// Condition Class for Task Planner
// Author : Prateek Parmeshwar

#pragma once

using namespace std;

class Condition
{
private:
    string predicate;
    list<string> args;
    bool truth;

public:
    Condition(string pred, list<string> args, bool truth)
    {
        this->predicate = pred;
        this->truth = truth;
        for (string ar : args)
        {
            this->args.push_back(ar);
        }
    }

    string get_predicate() const
    {
        return this->predicate;
    }

    list<string> get_args() const
    {
        return this->args;
    }

    bool get_truth() const
    {
        return this->truth;
    }

    friend ostream& operator<<(ostream& os, const Condition& cond)
    {
        os << cond.toString() << " ";
        return os;
    }

    bool operator==(const Condition& rhs) const // fixed
    {

        if (this->predicate != rhs.predicate || this->args.size() != rhs.args.size())
            return false;

        auto lhs_it = this->args.begin();
        auto rhs_it = rhs.args.begin();

        while (lhs_it != this->args.end() && rhs_it != rhs.args.end())
        {
            if (*lhs_it != *rhs_it)
                return false;
            ++lhs_it;
            ++rhs_it;
        }

        if (this->truth != rhs.get_truth())
            return false;

        return true;
    }

    string toString() const
    {
        string temp = "";
        if (!this->truth)
            temp += "!";
        temp += this->predicate;
        temp += "(";
        for (string l : this->args)
        {
            temp += l + ",";
        }
        temp = temp.substr(0, temp.length() - 1);
        temp += ")";
        return temp;
    }
};