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/*
* Copyright (C) 2021 Apple Inc. 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 APPLE INC. ``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 APPLE INC. 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 <iterator>
#include <wtf/MallocCommon.h>
#include <wtf/Noncopyable.h>
#include <wtf/Nonmovable.h>
#include <wtf/TrailingArray.h>
#include <wtf/UniqueRef.h>
namespace WTF {
DECLARE_ALLOCATOR_WITH_HEAP_IDENTIFIER(EmbeddedFixedVector);
template<typename T, typename Malloc = EmbeddedFixedVectorMalloc>
class EmbeddedFixedVector final : public TrailingArray<EmbeddedFixedVector<T, Malloc>, T> {
WTF_MAKE_CONFIGURABLE_ALLOCATED_WITH_HEAP_IDENTIFIER(EmbeddedFixedVector, Malloc);
WTF_MAKE_NONCOPYABLE(EmbeddedFixedVector);
WTF_MAKE_NONMOVABLE(EmbeddedFixedVector);
public:
using Base = TrailingArray<EmbeddedFixedVector<T, Malloc>, T>;
static UniqueRef<EmbeddedFixedVector> create(unsigned size)
{
return UniqueRef { *new (NotNull, Malloc::malloc(Base::allocationSize(size))) EmbeddedFixedVector(size) };
}
template<typename InputIterator>
static UniqueRef<EmbeddedFixedVector> create(InputIterator first, InputIterator last)
{
unsigned size = Checked<uint32_t> { std::distance(first, last) };
return UniqueRef { *new (NotNull, Malloc::malloc(Base::allocationSize(size))) EmbeddedFixedVector(size, first, last) };
}
template<size_t inlineCapacity, typename OverflowHandler>
static UniqueRef<EmbeddedFixedVector> createFromVector(const Vector<T, inlineCapacity, OverflowHandler>& other)
{
unsigned size = Checked<uint32_t> { other.size() }.value();
return UniqueRef { *new (NotNull, Malloc::malloc(Base::allocationSize(size))) EmbeddedFixedVector(size, other.begin(), other.end()) };
}
template<size_t inlineCapacity, typename OverflowHandler>
static UniqueRef<EmbeddedFixedVector> createFromVector(Vector<T, inlineCapacity, OverflowHandler>&& other)
{
Vector<T, inlineCapacity, OverflowHandler> container = WTFMove(other);
unsigned size = Checked<uint32_t> { container.size() }.value();
return UniqueRef { *new (NotNull, Malloc::malloc(Base::allocationSize(size))) EmbeddedFixedVector(size, std::move_iterator { container.begin() }, std::move_iterator { container.end() }) };
}
template<typename... Args>
static UniqueRef<EmbeddedFixedVector> createWithSizeAndConstructorArguments(unsigned size, Args&&... args)
{
return UniqueRef { *new (NotNull, Malloc::malloc(Base::allocationSize(size))) EmbeddedFixedVector(size, std::forward<Args>(args)...) };
}
template<std::invocable<size_t> Generator>
static std::unique_ptr<EmbeddedFixedVector> createWithSizeFromGenerator(unsigned size, NOESCAPE Generator&& generator)
{
auto result = std::unique_ptr<EmbeddedFixedVector> { new (NotNull, Malloc::malloc(Base::allocationSize(size))) EmbeddedFixedVector(typename Base::Failable { }, size, std::forward<Generator>(generator)) };
if (result->size() != size)
return nullptr;
return result;
}
UniqueRef<EmbeddedFixedVector> clone() const
{
return create(Base::begin(), Base::end());
}
bool operator==(const EmbeddedFixedVector& other) const
{
if (Base::size() != other.size())
return false;
for (unsigned i = 0; i < Base::size(); ++i) {
if (Base::at(i) != other.at(i))
return false;
}
return true;
}
private:
explicit EmbeddedFixedVector(unsigned size)
: Base(size)
{
}
template<typename InputIterator>
EmbeddedFixedVector(unsigned size, InputIterator first, InputIterator last)
: Base(size, first, last)
{
}
template<typename... Args>
explicit EmbeddedFixedVector(unsigned size, Args&&... args) // create with given size and constructor arguments for all elements
: Base(size, std::forward<Args>(args)...)
{
}
template<std::invocable<size_t> FailableGenerator>
EmbeddedFixedVector(typename Base::Failable failable, unsigned size, FailableGenerator&& generator)
: Base(failable, size, std::forward<FailableGenerator>(generator))
{
}
};
} // namespace WTF
using WTF::EmbeddedFixedVector;
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