matchingOverloadTemplate.d

template matchingOverload(alias funcSymbol, Args...)
{
    private template parametersMatch(alias funcSymbol, T...)
    {
        import std.traits : Parameters;
        enum parametersMatch = is(Parameters!funcSymbol == T);
    }

    static foreach(s; __traits(getOverloads, __traits(parent, funcSymbol), __traits(identifier, funcSymbol)))
    {
        static if (parametersMatch!(s, Args))
        {
            alias matchingOverload = s;
        }
    }

    static if (is(typeof(matchingOverload) == void))
    {
        import std.traits : fullyQualifiedName;
        static assert(0,
            "No overload of '" ~ fullyQualifiedName!funcSymbol ~ "' with types " ~ Args.stringof ~ " exists");
    }
}

// pragma(msg, (matchingOverload!(Test.doSomething, string)).mangleof);
// pragma(msg, (matchingOverload!(Test.doSomething, int)).mangleof);
// pragma(msg, (matchingOverload!(Test.doSomething)).mangleof);