Dll.h

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/** @noop License Comment
 *  @file
 *  @copyright
 *  This Source Code is subject to the terms of the Mozilla Public License, v2.0.
 *  If a copy of the MPL was not distributed with this file You can obtain one at
 *  https://mozilla.org/MPL/2.0/
 *  
 *  @author David Mórász
 *  @date 2025
 */
 
#pragma once
 
#include "CoreMinimal.h"
#include "Mcro/Concepts.h"
 
namespace Mcro::Dll
{
    using namespace Mcro::Concepts;
    
    /** RAII wrapper around PushDllDirectory / PopDllDirectory */
    struct MCRO_API FScopedSearchPath
    {
        FScopedSearchPath(FString const& path);
        ~FScopedSearchPath();
        
    private:
        FString Path;
    };
    
    /** RAII wrapper around GetDllHandle / FreeDllHandle */
    struct MCRO_API FScopedDll
    {
        FScopedDll(const TCHAR* fileName);
        ~FScopedDll();
        
    private:
        void* Handle;
    };
 
    /** Handle multiple DLL files in one set and an optional base path for them */
    struct MCRO_API FScopedDllSet
    {
        FScopedDllSet() {}
        
        template <CConvertibleTo<const TCHAR*>... Args>
        FScopedDllSet(FString const& pushPath, Args... args)
        {
            FScopedSearchPath pathContext(pushPath);
            (Dlls.Emplace(args), ...);
        }
        
    private:
 
        TArray<FScopedDll> Dlls;
    };
}