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This repository was archived by the owner on Aug 24, 2022. It is now read-only.

Incorrect method overload selection for interface method #892

@iskiselev

Description

@iskiselev

If interface has overload generic/non-generic method incorrect method is selected. Test Case:

using System;

public static class Program
{
    public static void Main(string[] args)
    {
        Console.WriteLine("**Interface**");
        var iObj = GetInterfaceHolder();
        iObj.Method(GetBase());
        iObj.Method(GetDerived());
        iObj.Method(GetInterface());
        iObj.Method<object>(GetBase());
        iObj.Method<object>(GetDerived());
    }

    public static Base GetBase()
    {
        return new Derived();
    }

    public static Derived GetDerived()
    {
        return new Derived();
    }

    public static IInterface GetInterface()
    {
        return new Derived();
    }

    public static IMethodHolder GetInterfaceHolder()
    {
        return new MethodHolder();
    }
}


public class Base : IInterface
{
}

public class Derived : Base
{
}

public interface IInterface
{
}

public interface IMethodHolder
{
    void Method(Base input);
    void Method(IInterface input);
    void Method(Derived input);
    void Method<T>(Derived input);
    void Method<T>(Base input);
}

public class MethodHolder : IMethodHolder
{
    public void Method(Base input)
    {
        Console.WriteLine("Base");
    }

    public void Method(IInterface input)
    {
        Console.WriteLine("IInterface");
    }

    public void Method(Derived input)
    {
        Console.WriteLine("Derived");
    }

    public void Method<T>(Derived input)
    {
        Console.WriteLine("GenericDerived");
    }

    public void Method<T>(Base input)
    {
        Console.WriteLine("GenericBase");
    }
}

Output:

// C# output begins //
**Interface**
Base
Derived
IInterface
GenericBase
GenericDerived
// JavaScript output begins //
**Interface**
Base
GenericDerived
IInterface
Base
GenericDerived

Translated source looks correct, so there is problem in JS implementation of signature selection.

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