mirror of
https://github.com/love2d/love.git
synced 2026-08-12 08:30:56 +02:00
Alex Szpakowski
72 lines
1.8 KiB
C++
72 lines
1.8 KiB
C++
/**
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* Copyright (c) 2006-2021 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#include "DataView.h"
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#include "common/Exception.h"
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#include "common/int.h"
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namespace love
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{
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namespace data
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{
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love::Type DataView::type("DataView", &Data::type);
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DataView::DataView(Data *data, size_t offset, size_t size)
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: data(data)
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, offset(offset)
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, size(size)
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{
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if (offset >= data->getSize() || size > data->getSize() || offset > data->getSize() - size)
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throw love::Exception("Offset and size of Data View must fit within the original Data's size.");
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if (size == 0)
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throw love::Exception("DataView size must be greater than 0.");
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}
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DataView::DataView(const DataView &d)
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: data(d.data)
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, offset(d.offset)
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, size(d.size)
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{
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}
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DataView::~DataView()
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{
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}
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DataView *DataView::clone() const
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{
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return new DataView(*this);
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}
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void *DataView::getData() const
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{
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return (uint8 *) data->getData() + offset;
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}
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size_t DataView::getSize() const
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{
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return size;
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}
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} // data
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} // love
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