/// <summary>
/// Execute a task if the predicate returns true.
/// </summary>
/// <param name="host">The host that will be used to execute the method.</param>
/// <param name="method">The method to execute if the predicate returns true.</param>
/// <returns>A task that represents the asynchronous operation.</returns>
public static async Task <IHost> Else(this ElseExecuteHost host, Func <IHost, Task <IHost> > method)
{
if (!host.CanElseExecute)
{
return(host.Unwrap());
}
return(await method(host));
}
/// <summary>
/// Execute a task if the predicate returns true.
/// </summary>
/// <param name="host">The host that will be used to execute the method.</param>
/// <param name="method">The method to execute if the predicate returns true.</param>
/// <returns>The host.</returns>
public static IHost Else(this ElseExecuteHost host, Func <IHost, IHost> method)
{
if (!host.CanElseExecute)
{
return(host.Unwrap());
}
return(method(host));
}
/// <summary>
/// Execute a task if the predicate returns true.
/// </summary>
/// <param name="host">The host that will be used to execute the method.</param>
/// <param name="predicate">The predicate.</param>
/// <param name="method">The method to execute if the predicate returns true.</param>
/// <returns>A task that represents the asynchronous operation.</returns>
public static async Task <ElseExecuteHost> ElseIf(this ElseExecuteHost host, Func <IHost, Task <bool> > predicate, Func <IHost, Task <IHost> > method)
{
if (!host.CanElseExecute)
{
return(host);
}
return(await predicate(host)
? new ElseExecuteHost(await method(host), false)
: new ElseExecuteHost(host, true));
}
/// <summary>
/// Execute a task if the predicate returns true.
/// </summary>
/// <param name="host">The host that will be used to execute the method.</param>
/// <param name="predicate">The predicate.</param>
/// <param name="method">The method to execute if the predicate returns true.</param>
/// <returns>The host.</returns>
public static ElseExecuteHost ElseIf(this ElseExecuteHost host, Func <IHost, bool> predicate, Func <IHost, IHost> method)
{
if (!host.CanElseExecute)
{
return(host);
}
return(predicate(host)
? new ElseExecuteHost(method(host), false)
: new ElseExecuteHost(host, true));
}
