AuroraRuntime/Source/IO/Adapters/AuIOAdapterRandom.cpp

/***
    Copyright (C) 2024 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: AuIOAdapterRandom.cpp
    Date: 2024-1-3
    Author: Reece
***/
#include <Source/RuntimeInternal.hpp>
#include "AuIOAdapterRandom.hpp"

namespace Aurora::IO::Adapters
{
    RandomStreamReader::RandomStreamReader(AuSPtr<RNG::IRandomDevice> pRandomDevice) :
        pRandomDevice(pRandomDevice)
    {
        
    }

    EStreamError RandomStreamReader::IsOpen()
    {
        return bool(this->pRandomDevice) ?
            EStreamError::eErrorNone :
            EStreamError::eErrorStreamNotOpen;
    }
    
    EStreamError RandomStreamReader::Read(const Memory::MemoryViewStreamWrite &parameters)
    {
        parameters.outVariable = 0;

        if (!parameters)
        {
            return EStreamError::eErrorOutOfBounds;
        }

        if (auto pRandomDevice = this->pRandomDevice)
        {
            pRandomDevice->Read(parameters);
            parameters.outVariable = parameters.length;
            return EStreamError::eErrorNone;
        }
        else
        {
            return EStreamError::eErrorStreamNotOpen;
        }
    }
    
    void RandomStreamReader::Close()
    {
        AuResetMember(this->pRandomDevice);
    }
    
    AUKN_SYM AuSPtr<IStreamReader>  NewRandomAdapter(const AuSPtr<RNG::IRandomDevice> &pRandomDevice)
    {
        SysCheckArgNotNull(pRandomDevice, {});
        SysCheckRetExpNotNullMemory(AuMakeShared<RandomStreamReader>(pRandomDevice), {});
    }
}