mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-11 19:07:15 +03:00
e0f4fdc9b4
This was useful in debugging a nullptr dereference, which was happening through later, but was caused by this inconsistent initialization.
67 lines
2.3 KiB
C++
67 lines
2.3 KiB
C++
/*
|
|
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Assertions.h>
|
|
#include <AK/Checked.h>
|
|
#include <AK/Types.h>
|
|
|
|
namespace AK {
|
|
|
|
class Utf32View {
|
|
public:
|
|
Utf32View() { }
|
|
Utf32View(const u32* codepoints, size_t length)
|
|
: m_codepoints(codepoints)
|
|
, m_length(length)
|
|
{
|
|
ASSERT(codepoints || length == 0);
|
|
}
|
|
|
|
const u32* codepoints() const { return m_codepoints; }
|
|
bool is_empty() const { return m_length == 0; }
|
|
size_t length() const { return m_length; }
|
|
|
|
Utf32View substring_view(size_t offset, size_t length) const
|
|
{
|
|
if (length == 0)
|
|
return {};
|
|
ASSERT(offset < m_length);
|
|
ASSERT(!Checked<size_t>::addition_would_overflow(offset, length));
|
|
ASSERT((offset + length) <= m_length);
|
|
return Utf32View(m_codepoints + offset, length);
|
|
}
|
|
|
|
private:
|
|
const u32* m_codepoints { nullptr };
|
|
size_t m_length { 0 };
|
|
};
|
|
|
|
}
|
|
|
|
using AK::Utf32View;
|