#include "grade_school.h"

#include <algorithm>

namespace grade_school {

using namespace std;

static const grade_t empty_grade = grade_t();


void school::add(const name_t &name, grade_number_t grade_number)
{
    grade_t &grade = roster_[grade_number];
    grade.insert(upper_bound(grade.begin(), grade.end(), name), name);
}

const grade_t &school::grade(grade_number_t number) const
{
    if (roster_.count(number))
        return roster_.at(number);
    else
        return empty_grade;
}

const roster_t &school::roster() const
{
    return roster_;
}

}