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ChainStyleExtension.cs
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using System;
namespace Aya.Extension
{
public static partial class ChainStyleExtension
{
#region Do
public static T Do<T>(this T target, params Action[] actions)
{
for (var i = 0; i < actions.Length; i++)
{
var action = actions[i];
action();
}
return target;
}
public static T Do<T>(this T target, params Action<T>[] actions)
{
for (var i = 0; i < actions.Length; i++)
{
var action = actions[i];
action(target);
}
return target;
}
#endregion
#region If / Else
public static T If<T>(this T target, Func<bool> predicate, Action successAction)
{
if (predicate())
{
successAction();
}
return target;
}
public static T If<T>(this T target, Func<bool> predicate, Action successAction, Action failAction)
{
if (predicate())
{
successAction();
}
else
{
failAction();
}
return target;
}
public static T If<T>(this T target, Func<bool> predicate, Action<T> successAction)
{
if (predicate())
{
successAction(target);
}
return target;
}
public static T If<T>(this T target, Func<bool> predicate, Action<T> successAction, Action<T> failAction)
{
if (predicate())
{
successAction(target);
}
else
{
failAction(target);
}
return target;
}
public static T If<T>(this T target, Predicate<T> predicate, Action successAction)
{
if (predicate(target))
{
successAction();
}
return target;
}
public static T If<T>(this T target, Predicate<T> predicate, Action successAction, Action failAction)
{
if (predicate(target))
{
successAction();
}
else
{
failAction();
}
return target;
}
public static T If<T>(this T target, Predicate<T> predicate, Action<T> successAction)
{
if (predicate(target))
{
successAction(target);
}
return target;
}
public static T If<T>(this T target, Predicate<T> predicate, Action<T> successAction, Action<T> failAction)
{
if (predicate(target))
{
successAction(target);
}
else
{
failAction(target);
}
return target;
}
public static T If<T>(this T target, Func<bool> predicate, Action<bool> action)
{
action(predicate());
return target;
}
public static T If<T>(this T target, Predicate<T> predicate, Action<bool> action)
{
action(predicate(target));
return target;
}
public static T If<T>(this T target, Func<bool> predicate, Action<T, bool> action)
{
action(target, predicate());
return target;
}
public static T If<T>(this T target, Predicate<T> predicate, Action<T, bool> action)
{
action(target, predicate(target));
return target;
}
#endregion
#region While
public static T While<T>(this T target, Func<bool> predicate, params Action[] actions) where T : class
{
while (predicate())
{
for (var i = 0; i < actions.Length; i++)
{
var action = actions[i];
action();
}
}
return target;
}
public static T While<T>(this T target, Func<bool> predicate, params Action<T>[] actions) where T : class
{
while (predicate())
{
for (var i = 0; i < actions.Length; i++)
{
var action = actions[i];
action(target);
}
}
return target;
}
public static T While<T>(this T target, Predicate<T> predicate, params Action[] actions) where T : class
{
while (predicate(target))
{
for (var i = 0; i < actions.Length; i++)
{
var action = actions[i];
action();
}
}
return target;
}
public static T While<T>(this T target, Predicate<T> predicate, params Action<T>[] actions) where T : class
{
while (predicate(target))
{
for (var i = 0; i < actions.Length; i++)
{
var action = actions[i];
action(target);
}
}
return target;
}
#endregion
#region Do While
public static T DoWhile<T>(this T target, Func<bool> predicate, params Action[] actions) where T : class
{
do
{
for (var i = 0; i < actions.Length; i++)
{
var action = actions[i];
action();
}
} while (predicate());
return target;
}
public static T DoWhile<T>(this T target, Func<bool> predicate, params Action<T>[] actions) where T : class
{
do
{
for (var i = 0; i < actions.Length; i++)
{
var action = actions[i];
action(target);
}
} while (predicate());
return target;
}
public static T DoWhile<T>(this T target, Predicate<T> predicate, params Action[] actions) where T : class
{
do
{
for (var i = 0; i < actions.Length; i++)
{
var action = actions[i];
action();
}
} while (predicate(target));
return target;
}
public static T DoWhile<T>(this T target, Predicate<T> predicate, params Action<T>[] actions) where T : class
{
do
{
for (var i = 0; i < actions.Length; i++)
{
var action = actions[i];
action(target);
}
} while (predicate(target));
return target;
}
#endregion
#region For
public static T For<T>(this T target, int count, Action<int> action)
{
return For(target, 0, count, 1, action);
}
public static T For<T>(this T target, int from, int to, Action<int> action)
{
return For(target, from, to, 1, action);
}
public static T For<T>(this T target, int from, int to, int step, Action<int> action)
{
for (var index = from; index < to; index += step)
{
action(index);
}
return target;
}
public static T For<T>(this T target, int count, Action<int, T> action)
{
return For(target, 0, count, 1, action);
}
public static T For<T>(this T target, int from, int to, Action<int, T> action)
{
return For(target, from, to, 1, action);
}
public static T For<T>(this T target, int from, int to, int step, Action<int, T> action)
{
for (var index = from; index < to; index += step)
{
action(index, target);
}
return target;
}
#endregion
#region Switch Case
// How to use : var typeName = string.Empty;
// var typeID = 2;
// typeID.Switch((string s) => typeName = s)
// .Case(0, "食品")
// .Case(1, "饮料")
// .Case(2, "酒水")
// .Case(3, "毒药")
// .Default("未知");
// Debug.Log(typeName);
//
// Warning : 链式编程中,当第一个条件就满足需要break时,只能返回null,然后传递直至所有条件结束,无法中途退出,有一定性能浪费。
#region Swith
public static SwitchCase<TCase, TOther> Switch<TCase, TOther>(this TCase @case, Action<TOther> action) where TCase : IEquatable<TCase>
{
var result = new SwitchCase<TCase, TOther>(@case, action);
return result;
}
public static SwitchCase<TCase, TOther> Switch<TInput, TCase, TOther>(this TInput input, Func<TInput, TCase> selector, Action<TOther> action) where TCase : IEquatable<TCase>
{
var result = new SwitchCase<TCase, TOther>(selector(input), action);
return result;
}
#endregion
#region Case
public static SwitchCase<TCase, TOther> Case<TCase, TOther>(this SwitchCase<TCase, TOther> switchCase, TCase option, TOther other) where TCase : IEquatable<TCase>
{
var result = Case(switchCase, option, other, true);
return result;
}
public static SwitchCase<TCase, TOther> Case<TCase, TOther>(this SwitchCase<TCase, TOther> switchCase, TCase option, TOther other, bool bBreak) where TCase : IEquatable<TCase>
{
var result = Case(switchCase, c => c.Equals(option), other, bBreak);
return result;
}
public static SwitchCase<TCase, TOther> Case<TCase, TOther>(this SwitchCase<TCase, TOther> switchCase, Predicate<TCase> predicate, TOther other) where TCase : IEquatable<TCase>
{
var result = Case(switchCase, predicate, other, true);
return result;
}
public static SwitchCase<TCase, TOther> Case<TCase, TOther>(this SwitchCase<TCase, TOther> swichCase, Predicate<TCase> predicate, TOther other, bool bBreak) where TCase : IEquatable<TCase>
{
if (swichCase == null) return null;
if (!predicate(swichCase.Value)) return swichCase;
swichCase.Action(other);
var result = bBreak ? null : swichCase;
return result;
}
#endregion
#region Default
public static SwitchCase<TCase, TOther> Default<TCase, TOther>(this SwitchCase<TCase, TOther> switchCase, TOther other)
{
switchCase?.Action(other);
return switchCase;
}
#endregion
#region SwithCase
public class SwitchCase<TCase, TOther>
{
public SwitchCase(TCase value, Action<TOther> action)
{
Value = value;
Action = action;
}
public TCase Value { get; private set; }
public Action<TOther> Action { get; private set; }
}
#endregion
#endregion
}
}