106 lines
3.3 KiB
C#
106 lines
3.3 KiB
C#
using System;
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using RoadTrain.Exceptions;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace RoadTrain.Generics
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{
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internal class SetGeneric<T>
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where T : class
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{
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/// <summary>
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/// Массив объектов, которые храним
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/// </summary>
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private readonly List<T?> _places;
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/// <summary>
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/// Количество объектов в массиве
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/// </summary>
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public int Count => _places.Count;
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/// <summary>
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/// Конструктор
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/// </summary>
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/// <param name="count"></param>
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private readonly int _maxCount;
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public SetGeneric(int count)
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{
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_maxCount = count;
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_places = new List<T?> (count);
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}
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/// <summary>
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/// Добавление объекта в набор
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/// </summary>
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/// <returns></returns>
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public int Insert(T train)
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{
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return Insert(train, 0);
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}
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/// <summary>
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/// Добавление объекта в набор на конкретную позицию
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/// </summary>
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/// <param name="car">Добавляемый автомобиль</param>
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/// <param name="position">Позиция</param>
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/// <returns></returns>
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public int Insert(T train, int position)
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{
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if (position < 0 || position >= _maxCount)
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throw new StorageOverflowException("Невалидная операция");
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if (Count >= _maxCount)
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throw new StorageOverflowException(_maxCount);
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_places.Insert(position, train);
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return position;
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}
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/// <summary>
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/// Удаление объекта из набора с конкретной позиции
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/// </summary>
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/// <param name="position"></param>
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/// <returns></returns>
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public bool Remove(int position)
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{
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if (position >= Count || position < 0)
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{
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throw new TrainNotFoundException("Невалидная операция");
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}
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if (_places[position] == null)
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{
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throw new TrainNotFoundException(position);
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}
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_places[position] = null;
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return true;
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}
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/// <summary>
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/// Получение объекта из набора по позиции
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/// </summary>
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/// <param name="position"></param>
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/// <returns></returns>
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public T? this[int position]
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{
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get
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{
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if ((position < 0) || (position >= Count)) return null;
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return _places[position];
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}
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set
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{
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if ((position < 0) || (position > _maxCount)) return;
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_places[position] = value;
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}
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}
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public IEnumerable<T?> GetTrains(int? maxTrains = null)
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{
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for (int i = 0; i < _places.Count; ++i)
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{
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yield return _places[i];
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if (maxTrains.HasValue && i == maxTrains.Value)
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{
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yield break;
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}
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}
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}
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}
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}
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