Util.h

// Copyright 2022 Stream.IO, Inc. All Rights Reserved.
 
#pragma once
 
namespace Util
{
template <typename OutT, typename InT>
FORCEINLINE OutT Convert(const InT& Input)
{
    return static_cast<OutT>(Input);
}
 
template <typename OutT, typename InT, typename... TArgs>
FORCEINLINE OutT Convert(const InT& Input, TArgs... Args)
{
    return OutT{Input, Args...};
}
 
template <typename OutT, typename InT>
FORCEINLINE TOptional<OutT> Convert(const TOptional<InT>& Input)
{
    if (Input.IsSet())
    {
        return TOptional<OutT>{static_cast<OutT>(Input.GetValue())};
    }
    return {};
}
 
template <typename OutT, typename InT>
FORCEINLINE TOptional<OutT> Convert(const InT* Input)
{
    if (Input != nullptr)
    {
        return TOptional<OutT>{static_cast<OutT>(*Input)};
    }
    return {};
}
 
template <typename OutT, typename InT>
FORCEINLINE TOptional<TArray<OutT>> Convert(const TOptional<TArray<InT>>& Input)
{
    if (Input.IsSet())
    {
        return TOptional<TArray<OutT>>{Util::Convert<OutT, InT>(Input.GetValue())};
    }
    return {};
}
 
template <typename OutT, typename InT>
FORCEINLINE TArray<OutT> Convert(const TArray<InT>& Input)
{
    TArray<OutT> Output;
    Output.Reserve(Input.Num());
    for (const InT& Value : Input)
    {
        Output.Emplace(static_cast<OutT>(Value));
    }
    return Output;
}
 
template <typename OutT, typename InT, typename... TArgs>
FORCEINLINE TArray<OutT> Convert(const TArray<InT>& Input, TArgs... Args)
{
    TArray<OutT> Output;
    Output.Reserve(Input.Num());
    for (const InT& Value : Input)
    {
        Output.Emplace(OutT{Value, Args...});
    }
    return Output;
}
}    // namespace Util