internal Oper(AssocType assoc, TokenType type, int level, ParseDelegate parseFunc = null, CombineDelegate combineFunc = null) : this(assoc, type, level)
{
if (parseFunc != null)
{
Parse = parseFunc;
}
if (combineFunc != null)
{
Combine = combineFunc;
}
}
delegate void CombineDelegate(); //объявляю делегат без возврата для задания 2
static void Main(string[] args)
{
Console.WriteLine("Task 1");
// Задание 1 и 1*
BigBadWolf bigWolf = new BigBadWolf(); // Создаю экземпляр класса БольшойСтрашныйВолк
Ba wolf = delegate(string name) //Задание 1 - создаю анонимный делегат со входным стрингом и выводом типа БольшойСтрашныйВолк
{
bigWolf.name = name;
return(bigWolf);
};
wolf("Jim").tryWoof(); //Использую делегат метода Вуф в используя первый делегат
Console.ReadKey();
//
Console.WriteLine();
// Задание 2
Console.WriteLine("Task 2");
CombineDelegate One = delegate { Console.WriteLine("One"); }; //Содаю анонимный делегат Один
CombineDelegate Two = delegate { Console.WriteLine("Two"); }; //Содаю анонимный делегат Два
CombineDelegate Three = delegate { Console.WriteLine("Three"); }; //Содаю анонимный делегат Три
CombineDelegate Four = delegate { Console.WriteLine("Four"); }; //Содаю анонимный делегат Четыри
CombineDelegate OnePlusTwo = One + Two; //При добавлении 2 делегатов они выполняются поочереди
OnePlusTwo();
Console.WriteLine();
CombineDelegate OnePlusTwoAndThree = OnePlusTwo + Three; //Идентичный пример с предыдущим, но добавляется к уже скомбинированому
OnePlusTwoAndThree();
Console.WriteLine();
CombineDelegate OnePlusTwoAndThreeMinusOne = OnePlusTwoAndThree - One; //При отнимании отнимании делегат с данным именем удалается со списка воспроизведеия данного делегата
OnePlusTwoAndThreeMinusOne();
Console.WriteLine();
CombineDelegate OnePlusTwoMinusFour = OnePlusTwo - Four; //При отнимании несуществующего делегата в данной колекции ничего не происходит
OnePlusTwoMinusFour();
Console.ReadKey();
}
private static T ReduceTask <T>(int start, int end, int grainSize, ReduceDelegate <T> loopbody, CombineDelegate <T> combineMethod)
{
int num = end - start;
T result;
if (num > grainSize)
{
int middle = (num / 2) + start;
Future <T> task = new DelegateFuture <T>(delegate { return(ReduceTask(start, middle, grainSize, loopbody, combineMethod)); }).Start();
result = ReduceTask(middle, end, grainSize, loopbody, combineMethod);
return(combineMethod(result, task.Result()));
}
// grainSize is never less than 1, thus num cannot be less than one.
if (num == 1)
{
return(loopbody(start));
}
result = combineMethod(loopbody(start), loopbody(start + 1));
for (int i = start + 2; i < end; i++)
{
result = combineMethod(result, loopbody(i));
}
return(result);
}
/// <summary>
/// Calculates and combines values to a single value.
/// </summary>
/// <remarks>
/// Parallel.Reduce combines multiple associative values into a single value. The ReduceDelegate loopbody
/// takes an integer between start and end and returns an element of type T. The CombineDelegate takes two such
/// elements and combine them. <p/>
/// Parallel.Reduce avoids using locks by dividing the problem into a binary task tree where each task
/// updates it's own local value.<p/>
/// GrainSize specifies a reasonable number of iterations in each task. If the number of iterations is more than grainSize, data
/// is split in two and handled separately.
/// Adjusting the grain size can lead to better performance, but the optimal grain size depends on the problem at hand.
/// Increasing the grain size will decrease the
/// amount of tasks, and thus decrease the overhead of setting up tasks. But a small amount of tasks could introduce some load
/// balancing problems, if no tasks are available for free processors. Decreasing the grain size will increase the amount of
/// tasks and thereby ensure better load balancing, but on the other hand it will also increase the overhead of setting up tasks.<p/>
/// Parallel.Reduce catches any uncaught exception raised inside the tasks. Once the exception is caught Parallel.Reduce cancels all
/// running tasks that it has started and throws a Jibu.CancelException, containing the original exception. Jibu cancels all
/// tasks but it doesn't just brutally stop them - the user defined code must detect and handle the cancellation. For more information on cancellation see Jibu.Task.Cancel and Jibu.CancelException
/// </remarks>
/// <exception cref="Jibu.CancelException">If one of the Tasks is cancelled, Parallel.Reduce cancels the remaining Tasks
/// and throws a Jibu.CancelException.</exception>
/// <exception cref="System.ArgumentOutOfRangeException">Is thrown if the grain size is less than 1.</exception>
/// <typeparam name="T">A type that must be associative</typeparam>
/// <param name="start">First index, which is incremented by one until it equals end.</param>
/// <param name="end">Last index, which is not included in the loop. The loop runs as long as start is less than end.</param>
/// <param name="initialValue">The initial value for the result.</param>
/// <param name="grainSize">A reasonable number of iterations in each task</param>
/// <param name="loopbody">A delegate containing the work. Loopbody is executed once for each iteration.</param>
/// <param name="combineMethod">A delegate used to combine the local results</param>
/// <returns>A single value of type T</returns>
// <example>
// - Parallel Reduce Example -
// <code><include ReduceExample/ReduceExample.cs></code>
// </example>
public static T Reduce <T>(int start, int end, T initialValue, int grainSize, ReduceDelegate <T> loopbody, CombineDelegate <T> combineMethod)
{
if (end - start < 1)
{
return(initialValue);
}
if (grainSize < 1)
{
throw new ArgumentOutOfRangeException("Grain size cannot be less than 1.");
}
return(new DelegateFuture <T>(delegate { return combineMethod(initialValue, ReduceTask <T>(start, end, grainSize, loopbody, combineMethod)); }).Result());
}
/// <summary>
/// Calculates and combines values to a single value.
/// </summary>
/// <remarks>
/// Parallel.Reduce combines multiple associative values into a single value. The ReduceDelegate loopbody
/// takes an integer between start and end and returns an element of type T. The CombineDelegate takes two such
/// elements and combine them. <p/>
/// Parallel.Reduce avoids using locks by dividing the problem into a binary task tree where each task
/// updates it's own local value.<p/>
/// Grain size is implicit set to two. It's often possible to increase performance by adjusting the grain size.
/// To do so use Parallel.Reduce(int start, int end, T initialValue, int grainSize, ReduceDelegate loopbody, CombineDelegate combineMethod).
/// Parallel.<p/>
/// Reduce catches any uncaught exception raised inside the tasks. Once the exception is caught Parallel.Reduce cancels all
/// running tasks that it has started and throws a Jibu.CancelException, containing the original exception. Jibu cancels all
/// tasks but it doesn't just brutally stop them - the user defined code must detect and handle the cancellation. For more information on cancellation see Jibu.Task.Cancel and Jibu.CancelException
/// </remarks>
/// <exception cref="Jibu.CancelException">If one of the Tasks is cancelled, Parallel.Reduce cancels the remaining Tasks
/// and throws a Jibu.CancelException.</exception>
/// <typeparam name="T">A type that must be associative</typeparam>
/// <param name="start">First index, which is incremented by one until it equals end.</param>
/// <param name="end">Last index, which is not included in the loop. The loop runs as long as start is less than end.</param>
/// <param name="initialValue">The initial value for the result.</param>
/// <param name="loopbody">A delegate containing the work. Loopbody is executed once for each iteration.</param>
/// <param name="combineMethod">A delegate used to combine the local results</param>
/// <returns>A single value of type T</returns>
// <example>
// - Parallel Reduce Example -
// <code><include ReduceExample/ReduceExample.cs></code>
// </example>
public static T Reduce <T>(int start, int end, T initialValue, ReduceDelegate <T> loopbody, CombineDelegate <T> combineMethod)
{
return(Reduce(start, end, initialValue, 1, loopbody, combineMethod));
}
internal Oper(AssocType assoc, TokenType type, int level)
{
this.assoc = assoc;
this.type = type;
this.level = level;
switch (assoc)
{
case AssocType.BinaryLeft:
case AssocType.BinaryRight:
switch (type)
{
case TokenType.GT:
Parse = _parse_gt;
break;
case TokenType.LT:
Parse = _parse_lt;
break;
default:
Parse = _parse;
break;
}
Combine = _combine_binary;
break;
case AssocType.PostfixDot:
this.assoc = AssocType.Postfix;
Parse = _parse_postfix_dot;
Combine = _combine_postfix_dot;
break;
case AssocType.PostfixColon:
this.assoc = AssocType.Postfix;
Parse = _parse_postfix_colon;
Combine = _combine_postfix_colon;
break;
case AssocType.BinaryDot:
this.assoc = AssocType.BinaryLeft;
Parse = _parse;
Combine = _combine_binary_dot;
break;
case AssocType.BinaryColon:
this.assoc = AssocType.BinaryLeft;
Parse = _parse;
Combine = _combine_binary_colon;
break;
case AssocType.PostfixCall:
this.assoc = AssocType.Postfix;
Parse = _parse_postfix_call;
Combine = _combine_postfix_call;
break;
case AssocType.PostfixIndex:
this.assoc = AssocType.Postfix;
Parse = _parse_postfix_index;
Combine = _combine_postfix_index;
break;
case AssocType.BinaryAssign:
this.assoc = AssocType.BinaryRight;
Parse = _parse;
Combine = _combine_binary_assign;
break;
case AssocType.BinaryAssignOp:
this.assoc = AssocType.BinaryRight;
Parse = _parse;
Combine = _combine_binary_assign_op;
break;
case AssocType.BinaryLogic:
this.assoc = AssocType.BinaryLeft;
Parse = _parse;
Combine = _combine_binary_logic;
break;
case AssocType.Postfix:
Parse = _parse;
Combine = _combine_postfix;
break;
case AssocType.Prefix:
Parse = _parse;
Combine = _combine_prefix;
break;
case AssocType.PostfixAssign:
this.assoc = AssocType.Postfix;
Parse = _parse;
Combine = _combine_postfix_assign;
break;
case AssocType.PrefixAssign:
this.assoc = AssocType.Prefix;
Parse = _parse;
Combine = _combine_prefix_assign;
break;
case AssocType.PostfixIs:
this.assoc = AssocType.Postfix;
Parse = _parse_is_as;
Combine = _combine_postfix_is;
break;
case AssocType.PostfixAsType:
this.assoc = AssocType.Postfix;
Parse = _parse_is_as;
Combine = _combine_postfix_as_type;
break;
case AssocType.PrefixCast:
this.assoc = AssocType.Prefix;
Parse = _parse;
Combine = _combine_prefix_cast;
break;
case AssocType.PrefixRuntimeId:
this.assoc = AssocType.Prefix;
Parse = _parse;
Combine = _combine_prefix_runtime_id;
break;
case AssocType.BinaryAlias:
this.assoc = AssocType.BinaryLeft;
Parse = _parse_alias;
Combine = _combine_binary_alias;
break;
case AssocType.BinarySubstr:
this.assoc = AssocType.BinaryLeft;
Parse = _parse;
Combine = _combine_binary_substr;
break;
case AssocType.None:
Parse = _parse_empty;
Combine = null;
break;
}
}
