DataView.cpp

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#include "DataView.h"
#include "common/Exception.h"
#include <cstdint>
 
namespace eve
{
namespace data
{
 
 
DataView::DataView(Data *data, size_t offset, size_t size)
    : data(data)
    , offset(offset)
    , size(size)
{
    if (offset >= data->getSize() || size > data->getSize() || offset > data->getSize() - size)
        throw eve::Exception("Offset and size of Data View must fit within the original Data's size.");
 
    if (size == 0)
        throw eve::Exception("DataView size must be greater than 0.");
}
 
DataView::DataView(const DataView &d)
    : data(d.data)
    , offset(d.offset)
    , size(d.size)
{
}
 
DataView::~DataView()
{
}
 
DataView *DataView::clone() const
{
    return new DataView(*this);
}
 
void *DataView::getData() const
{
    return (uint8_t *) data->getData() + offset;
}
 
size_t DataView::getSize() const
{
    return size;
}
 
} // data
} // eve