AuroraRuntime/Include/Aurora/Memory/ByteBufferPushReadState.hpp

/***
    Copyright (C) 2022 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: ByteBufferPushReadState.hpp
    Date: 2022-2-15
    Author: Reece
***/
#pragma once

namespace Aurora::Memory
{
    struct ByteBufferPushReadState
    {
        ByteBuffer &bytebuffer;

        ByteBufferPushReadState(ByteBuffer &bytebuffer, bool pushError = false) : bytebuffer(bytebuffer), shouldPopError_(pushError)
        {
            this->readPos_ = this->bytebuffer.readPtr - this->bytebuffer.base;
            this->readErrorFlag_ = bytebuffer.flagReadError;
        }

        ~ByteBufferPushReadState()
        {
            if (this->readErrorFlag_ != bytebuffer.flagReadError)
            {
                if (this->shouldPopError_)
                {
                    this->bytebuffer.flagReadError = this->readErrorFlag_;
                }
                this->bytebuffer.readPtr = this->bytebuffer.base + this->readPos_;
            }
        }

    private:
        bool readErrorFlag_;
        AuUInt readPos_;
        const bool shouldPopError_;
    };
}