// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT License.
// See the LICENSE file in the project root for more information.

<#@ template debug="false" hostspecific="false" language="C#" #>
<#@ assembly name="System.Core" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Text" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ output extension=".cs" #>
// This code was generated by a T4 template at <#=DateTime.Now#>.

namespace System.Reactive.Linq
{
    using ObservableImpl;

    internal partial class QueryLanguage
    {
<#
for (int i = 3; i <= 16; i++)
{
    var parameters = string.Join(", ", Enumerable.Range(1, i).Select(j => "IObservable<TSource" + j + "> source" + j));
    var genArgs = string.Join(", ", Enumerable.Range(1, i).Select(j => "TSource" + j));
    var sources = string.Join(", ", Enumerable.Range(1, i).Select(j => "source" + j));

#>
        public virtual IObservable<TResult> Zip<<#=genArgs#>, TResult>(<#=parameters#>, Func<<#=genArgs#>, TResult> resultSelector)
        {
            return new Zip<<#=genArgs#>, TResult>(<#=sources#>, resultSelector);
        }

<#
}
#>
    }


    internal partial class QueryLanguageEx
    {
<#
for (int i = 2; i <= 8; i++)
{
    var parameters = string.Join(", ", Enumerable.Range(1, i).Select(j => "IObservable<TSource" + j + "> source" + j));
    var genArgs = string.Join(", ", Enumerable.Range(1, i).Select(j => "TSource" + j));
    var sources = string.Join(", ", Enumerable.Range(1, i).Select(j => "source" + j));
    var tuple = "(" + string.Join(", ", Enumerable.Range(1, i).Select(j => "TSource" + j)) + ")";
    var vals = string.Join(", ", Enumerable.Range(1, i).Select(j => "t" + j));
    var selector = "(" + vals + ") => (" + vals + ")";
    var extra = i == 2 ? ".Observable" : "";

#>
        public virtual IObservable<<#=tuple#>> Zip<<#=genArgs#>>(<#=parameters#>)
        {
            return new Zip<<#=genArgs#>, <#=tuple#>><#=extra#>(<#=sources#>, <#=selector#>);
        }

<#
}
#>
    }
}