exo6: add arguments and comments the filling variable method.

[Project_POO.git] / exo6 / Variable.java

import java.util.TreeMap;
import java.util.Map.Entry;

class Variable extends Terme {
    //TODO: TreeMap might look overkill
    TreeMap<Integer, Double> v;

    Variable() {
        v = new TreeMap<Integer, Double>();
        fill(-5.0, 5.0, 0.25);
    }

    /**
     * Fill the variable with a discret set of double values
     * @param start starting double value
     * @param end   ending double value
     * @param step  looping step
     */
    private void fill(double start, double end, double step) {
        int i = 0;
        for (double d = start; d <= end; d = d + step) {
            v.put(i, d);
            i++;
        }
    }

    public Entry<Integer, Double> getFirstEntry() {
        return v.firstEntry();
    }

    public Integer size() {
        return v.size();
    }

    public double evaluer() {
        return v.pollFirstEntry().getValue();
    }
}