/// <summary>
/// Adds a default label to a <see cref="TypeSwitch"/>.
/// </summary>
/// <param name="typeSwitch">The current <see cref="TypeSwitch"/>.</param>
/// <param name="a">The action to perform if <see cref="TypeSwitch.Object"/> reaches the Default case.</param>
/// <returns>The current TypeSwitch to be used with chaining cases.</returns>
public static void Default(this TypeSwitch typeSwitch, Action <object> a)
{
if (typeSwitch != null)
{
a(typeSwitch.Object);
}
}
/// <summary>
/// Adds a case label to a <see cref="TypeSwitch"/>.
/// </summary>
/// <typeparam name="T">The case type.</typeparam>
/// <param name="typeSwitch">The current <see cref="TypeSwitch"/>.</param>
/// <param name="c">A filter function that returns <c>true</c> if the object should run the case; otherwise <c>false</c>.</param>
/// <param name="a">The action to perform if <see cref="TypeSwitch.Object"/> matches the case type.</param>
/// <param name="fallThrough"><c>true</c> to fall-through to any following cases; otherwise <c>false</c>.</param>
/// <returns>The current TypeSwitch to be used with chaining cases.</returns>
public static TypeSwitch Case <T>(this TypeSwitch typeSwitch, Func <T, bool> c, Action <T> a, bool fallThrough)
{
if (typeSwitch == null)
{
return(null);
}
var typedObject = typeSwitch.Object is T ? (T)typeSwitch.Object : default(T);
var type = typeSwitch.Type;
var caseType = typeof(T);
if ((typedObject == null || typedObject.Equals(default(T)) || !c(typedObject) || type != null && !Device.Reflector.IsAssignableFrom(caseType, type)) &&
(type == null || !Device.Reflector.IsAssignableFrom(caseType, type) || !c(default(T))))
{
return(typeSwitch);
}
a(typedObject);
return(fallThrough ? typeSwitch : null);
}
/// <summary>
/// Adds a case label to a <see cref="TypeSwitch"/>.
/// </summary>
/// <typeparam name="T">The case type.</typeparam>
/// <param name="typeSwitch">The current <see cref="TypeSwitch"/>.</param>
/// <param name="c">A filter function that returns <c>true</c> if the object should run the case; otherwise <c>false</c>.</param>
/// <param name="a">The action to perform if <see cref="TypeSwitch.Object"/> matches the case type.</param>
/// <returns>The current TypeSwitch to be used with chaining cases.</returns>
public static TypeSwitch Case <T>(this TypeSwitch typeSwitch, Func <T, bool> c, Action <T> a)
{
return(Case(typeSwitch, c, a, false));
}
/// <summary>
/// Adds a case label to a <see cref="TypeSwitch"/>.
/// </summary>
/// <typeparam name="T">The case type.</typeparam>
/// <param name="typeSwitch">The current <see cref="TypeSwitch"/>.</param>
/// <param name="a">The action to perform if <see cref="TypeSwitch.Object"/> matches the case type.</param>
/// <param name="fallThrough"><c>true</c> to fall-through to any following cases; otherwise <c>false</c>.</param>
/// <returns>The current TypeSwitch to be used with chaining cases.</returns>
public static TypeSwitch Case <T>(this TypeSwitch typeSwitch, Action <T> a, bool fallThrough)
{
return(Case(typeSwitch, o => true, a, fallThrough));
}
/// <summary>
/// Adds a case label to a <see cref="TypeSwitch"/>.
/// </summary>
/// <typeparam name="T">The case type.</typeparam>
/// <param name="typeSwitch">The current <see cref="TypeSwitch"/>.</param>
/// <param name="a">The action to perform if <see cref="TypeSwitch.Object"/> matches the case type.</param>
/// <returns>The current TypeSwitch to be used with chaining cases.</returns>
public static TypeSwitch Case <T>(this TypeSwitch typeSwitch, Action <T> a)
{
return(Case(typeSwitch, o => true, a, false));
}
