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-rw-r--r--JavaScriptCore/wtf/Vector.h1157
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diff --git a/JavaScriptCore/wtf/Vector.h b/JavaScriptCore/wtf/Vector.h
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--- a/JavaScriptCore/wtf/Vector.h
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-/*
- * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB. If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- *
- */
-
-#ifndef WTF_Vector_h
-#define WTF_Vector_h
-
-#include "FastAllocBase.h"
-#include "Noncopyable.h"
-#include "NotFound.h"
-#include "StdLibExtras.h"
-#include "ValueCheck.h"
-#include "VectorTraits.h"
-#include <limits>
-#include <utility>
-
-#if PLATFORM(QT)
-#include <QDataStream>
-#endif
-
-namespace WTF {
-
- using std::min;
- using std::max;
-
- // WTF_ALIGN_OF / WTF_ALIGNED
- #if COMPILER(GCC) || COMPILER(MINGW) || COMPILER(RVCT) || COMPILER(WINSCW)
- #define WTF_ALIGN_OF(type) __alignof__(type)
- #define WTF_ALIGNED(variable_type, variable, n) variable_type variable __attribute__((__aligned__(n)))
- #elif COMPILER(MSVC)
- #define WTF_ALIGN_OF(type) __alignof(type)
- #define WTF_ALIGNED(variable_type, variable, n) __declspec(align(n)) variable_type variable
- #else
- #error WTF_ALIGN macros need alignment control.
- #endif
-
- #if COMPILER(GCC) && !COMPILER(INTEL) && (((__GNUC__ * 100) + __GNUC_MINOR__) >= 303)
- typedef char __attribute__((__may_alias__)) AlignedBufferChar;
- #else
- typedef char AlignedBufferChar;
- #endif
-
- template <size_t size, size_t alignment> struct AlignedBuffer;
- template <size_t size> struct AlignedBuffer<size, 1> { AlignedBufferChar buffer[size]; };
- template <size_t size> struct AlignedBuffer<size, 2> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 2); };
- template <size_t size> struct AlignedBuffer<size, 4> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 4); };
- template <size_t size> struct AlignedBuffer<size, 8> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 8); };
- template <size_t size> struct AlignedBuffer<size, 16> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 16); };
- template <size_t size> struct AlignedBuffer<size, 32> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 32); };
- template <size_t size> struct AlignedBuffer<size, 64> { WTF_ALIGNED(AlignedBufferChar, buffer[size], 64); };
-
- template <size_t size, size_t alignment>
- void swap(AlignedBuffer<size, alignment>& a, AlignedBuffer<size, alignment>& b)
- {
- for (size_t i = 0; i < size; ++i)
- std::swap(a.buffer[i], b.buffer[i]);
- }
-
- template <bool needsDestruction, typename T>
- struct VectorDestructor;
-
- template<typename T>
- struct VectorDestructor<false, T>
- {
- static void destruct(T*, T*) {}
- };
-
- template<typename T>
- struct VectorDestructor<true, T>
- {
- static void destruct(T* begin, T* end)
- {
- for (T* cur = begin; cur != end; ++cur)
- cur->~T();
- }
- };
-
- template <bool needsInitialization, bool canInitializeWithMemset, typename T>
- struct VectorInitializer;
-
- template<bool ignore, typename T>
- struct VectorInitializer<false, ignore, T>
- {
- static void initialize(T*, T*) {}
- };
-
- template<typename T>
- struct VectorInitializer<true, false, T>
- {
- static void initialize(T* begin, T* end)
- {
- for (T* cur = begin; cur != end; ++cur)
- new (cur) T;
- }
- };
-
- template<typename T>
- struct VectorInitializer<true, true, T>
- {
- static void initialize(T* begin, T* end)
- {
- memset(begin, 0, reinterpret_cast<char*>(end) - reinterpret_cast<char*>(begin));
- }
- };
-
- template <bool canMoveWithMemcpy, typename T>
- struct VectorMover;
-
- template<typename T>
- struct VectorMover<false, T>
- {
- static void move(const T* src, const T* srcEnd, T* dst)
- {
- while (src != srcEnd) {
- new (dst) T(*src);
- src->~T();
- ++dst;
- ++src;
- }
- }
- static void moveOverlapping(const T* src, const T* srcEnd, T* dst)
- {
- if (src > dst)
- move(src, srcEnd, dst);
- else {
- T* dstEnd = dst + (srcEnd - src);
- while (src != srcEnd) {
- --srcEnd;
- --dstEnd;
- new (dstEnd) T(*srcEnd);
- srcEnd->~T();
- }
- }
- }
- };
-
- template<typename T>
- struct VectorMover<true, T>
- {
- static void move(const T* src, const T* srcEnd, T* dst)
- {
- memcpy(dst, src, reinterpret_cast<const char*>(srcEnd) - reinterpret_cast<const char*>(src));
- }
- static void moveOverlapping(const T* src, const T* srcEnd, T* dst)
- {
- memmove(dst, src, reinterpret_cast<const char*>(srcEnd) - reinterpret_cast<const char*>(src));
- }
- };
-
- template <bool canCopyWithMemcpy, typename T>
- struct VectorCopier;
-
- template<typename T>
- struct VectorCopier<false, T>
- {
- static void uninitializedCopy(const T* src, const T* srcEnd, T* dst)
- {
- while (src != srcEnd) {
- new (dst) T(*src);
- ++dst;
- ++src;
- }
- }
- };
-
- template<typename T>
- struct VectorCopier<true, T>
- {
- static void uninitializedCopy(const T* src, const T* srcEnd, T* dst)
- {
- memcpy(dst, src, reinterpret_cast<const char*>(srcEnd) - reinterpret_cast<const char*>(src));
- }
- };
-
- template <bool canFillWithMemset, typename T>
- struct VectorFiller;
-
- template<typename T>
- struct VectorFiller<false, T>
- {
- static void uninitializedFill(T* dst, T* dstEnd, const T& val)
- {
- while (dst != dstEnd) {
- new (dst) T(val);
- ++dst;
- }
- }
- };
-
- template<typename T>
- struct VectorFiller<true, T>
- {
- static void uninitializedFill(T* dst, T* dstEnd, const T& val)
- {
- ASSERT(sizeof(T) == sizeof(char));
- memset(dst, val, dstEnd - dst);
- }
- };
-
- template<bool canCompareWithMemcmp, typename T>
- struct VectorComparer;
-
- template<typename T>
- struct VectorComparer<false, T>
- {
- static bool compare(const T* a, const T* b, size_t size)
- {
- for (size_t i = 0; i < size; ++i)
- if (a[i] != b[i])
- return false;
- return true;
- }
- };
-
- template<typename T>
- struct VectorComparer<true, T>
- {
- static bool compare(const T* a, const T* b, size_t size)
- {
- return memcmp(a, b, sizeof(T) * size) == 0;
- }
- };
-
- template<typename T>
- struct VectorTypeOperations
- {
- static void destruct(T* begin, T* end)
- {
- VectorDestructor<VectorTraits<T>::needsDestruction, T>::destruct(begin, end);
- }
-
- static void initialize(T* begin, T* end)
- {
- VectorInitializer<VectorTraits<T>::needsInitialization, VectorTraits<T>::canInitializeWithMemset, T>::initialize(begin, end);
- }
-
- static void move(const T* src, const T* srcEnd, T* dst)
- {
- VectorMover<VectorTraits<T>::canMoveWithMemcpy, T>::move(src, srcEnd, dst);
- }
-
- static void moveOverlapping(const T* src, const T* srcEnd, T* dst)
- {
- VectorMover<VectorTraits<T>::canMoveWithMemcpy, T>::moveOverlapping(src, srcEnd, dst);
- }
-
- static void uninitializedCopy(const T* src, const T* srcEnd, T* dst)
- {
- VectorCopier<VectorTraits<T>::canCopyWithMemcpy, T>::uninitializedCopy(src, srcEnd, dst);
- }
-
- static void uninitializedFill(T* dst, T* dstEnd, const T& val)
- {
- VectorFiller<VectorTraits<T>::canFillWithMemset, T>::uninitializedFill(dst, dstEnd, val);
- }
-
- static bool compare(const T* a, const T* b, size_t size)
- {
- return VectorComparer<VectorTraits<T>::canCompareWithMemcmp, T>::compare(a, b, size);
- }
- };
-
- template<typename T>
- class VectorBufferBase : public Noncopyable {
- public:
- void allocateBuffer(size_t newCapacity)
- {
- m_capacity = newCapacity;
- if (newCapacity > std::numeric_limits<size_t>::max() / sizeof(T))
- CRASH();
- m_buffer = static_cast<T*>(fastMalloc(newCapacity * sizeof(T)));
- }
-
- bool tryAllocateBuffer(size_t newCapacity)
- {
- if (newCapacity > std::numeric_limits<size_t>::max() / sizeof(T))
- return false;
-
- T* newBuffer;
- if (tryFastMalloc(newCapacity * sizeof(T)).getValue(newBuffer)) {
- m_capacity = newCapacity;
- m_buffer = newBuffer;
- return true;
- }
- return false;
- }
-
- void deallocateBuffer(T* bufferToDeallocate)
- {
- if (m_buffer == bufferToDeallocate) {
- m_buffer = 0;
- m_capacity = 0;
- }
- fastFree(bufferToDeallocate);
- }
-
- T* buffer() { return m_buffer; }
- const T* buffer() const { return m_buffer; }
- T** bufferSlot() { return &m_buffer; }
- size_t capacity() const { return m_capacity; }
-
- T* releaseBuffer()
- {
- T* buffer = m_buffer;
- m_buffer = 0;
- m_capacity = 0;
- return buffer;
- }
-
- protected:
- VectorBufferBase()
- : m_buffer(0)
- , m_capacity(0)
- {
- }
-
- VectorBufferBase(T* buffer, size_t capacity)
- : m_buffer(buffer)
- , m_capacity(capacity)
- {
- }
-
- ~VectorBufferBase()
- {
- // FIXME: It would be nice to find a way to ASSERT that m_buffer hasn't leaked here.
- }
-
- T* m_buffer;
- size_t m_capacity;
- };
-
- template<typename T, size_t inlineCapacity>
- class VectorBuffer;
-
- template<typename T>
- class VectorBuffer<T, 0> : private VectorBufferBase<T> {
- private:
- typedef VectorBufferBase<T> Base;
- public:
- VectorBuffer()
- {
- }
-
- VectorBuffer(size_t capacity)
- {
- allocateBuffer(capacity);
- }
-
- ~VectorBuffer()
- {
- deallocateBuffer(buffer());
- }
-
- void swap(VectorBuffer<T, 0>& other)
- {
- std::swap(m_buffer, other.m_buffer);
- std::swap(m_capacity, other.m_capacity);
- }
-
- void restoreInlineBufferIfNeeded() { }
-
- using Base::allocateBuffer;
- using Base::tryAllocateBuffer;
- using Base::deallocateBuffer;
-
- using Base::buffer;
- using Base::bufferSlot;
- using Base::capacity;
-
- using Base::releaseBuffer;
- private:
- using Base::m_buffer;
- using Base::m_capacity;
- };
-
- template<typename T, size_t inlineCapacity>
- class VectorBuffer : private VectorBufferBase<T> {
- private:
- typedef VectorBufferBase<T> Base;
- public:
- VectorBuffer()
- : Base(inlineBuffer(), inlineCapacity)
- {
- }
-
- VectorBuffer(size_t capacity)
- : Base(inlineBuffer(), inlineCapacity)
- {
- if (capacity > inlineCapacity)
- Base::allocateBuffer(capacity);
- }
-
- ~VectorBuffer()
- {
- deallocateBuffer(buffer());
- }
-
- void allocateBuffer(size_t newCapacity)
- {
- if (newCapacity > inlineCapacity)
- Base::allocateBuffer(newCapacity);
- else {
- m_buffer = inlineBuffer();
- m_capacity = inlineCapacity;
- }
- }
-
- bool tryAllocateBuffer(size_t newCapacity)
- {
- if (newCapacity > inlineCapacity)
- return Base::tryAllocateBuffer(newCapacity);
- m_buffer = inlineBuffer();
- m_capacity = inlineCapacity;
- return true;
- }
-
- void deallocateBuffer(T* bufferToDeallocate)
- {
- if (bufferToDeallocate == inlineBuffer())
- return;
- Base::deallocateBuffer(bufferToDeallocate);
- }
-
- void swap(VectorBuffer<T, inlineCapacity>& other)
- {
- if (buffer() == inlineBuffer() && other.buffer() == other.inlineBuffer()) {
- WTF::swap(m_inlineBuffer, other.m_inlineBuffer);
- std::swap(m_capacity, other.m_capacity);
- } else if (buffer() == inlineBuffer()) {
- m_buffer = other.m_buffer;
- other.m_buffer = other.inlineBuffer();
- WTF::swap(m_inlineBuffer, other.m_inlineBuffer);
- std::swap(m_capacity, other.m_capacity);
- } else if (other.buffer() == other.inlineBuffer()) {
- other.m_buffer = m_buffer;
- m_buffer = inlineBuffer();
- WTF::swap(m_inlineBuffer, other.m_inlineBuffer);
- std::swap(m_capacity, other.m_capacity);
- } else {
- std::swap(m_buffer, other.m_buffer);
- std::swap(m_capacity, other.m_capacity);
- }
- }
-
- void restoreInlineBufferIfNeeded()
- {
- if (m_buffer)
- return;
- m_buffer = inlineBuffer();
- m_capacity = inlineCapacity;
- }
-
- using Base::buffer;
- using Base::bufferSlot;
- using Base::capacity;
-
- T* releaseBuffer()
- {
- if (buffer() == inlineBuffer())
- return 0;
- return Base::releaseBuffer();
- }
-
- private:
- using Base::m_buffer;
- using Base::m_capacity;
-
- static const size_t m_inlineBufferSize = inlineCapacity * sizeof(T);
- T* inlineBuffer() { return reinterpret_cast_ptr<T*>(m_inlineBuffer.buffer); }
-
- AlignedBuffer<m_inlineBufferSize, WTF_ALIGN_OF(T)> m_inlineBuffer;
- };
-
- template<typename T, size_t inlineCapacity = 0>
- class Vector : public FastAllocBase {
- private:
- typedef VectorBuffer<T, inlineCapacity> Buffer;
- typedef VectorTypeOperations<T> TypeOperations;
-
- public:
- typedef T ValueType;
-
- typedef T* iterator;
- typedef const T* const_iterator;
-
- Vector()
- : m_size(0)
- {
- }
-
- explicit Vector(size_t size)
- : m_size(size)
- , m_buffer(size)
- {
- if (begin())
- TypeOperations::initialize(begin(), end());
- }
-
- ~Vector()
- {
- if (m_size) shrink(0);
- }
-
- Vector(const Vector&);
- template<size_t otherCapacity>
- Vector(const Vector<T, otherCapacity>&);
-
- Vector& operator=(const Vector&);
- template<size_t otherCapacity>
- Vector& operator=(const Vector<T, otherCapacity>&);
-
- size_t size() const { return m_size; }
- size_t capacity() const { return m_buffer.capacity(); }
- bool isEmpty() const { return !size(); }
-
- T& at(size_t i)
- {
- ASSERT(i < size());
- return m_buffer.buffer()[i];
- }
- const T& at(size_t i) const
- {
- ASSERT(i < size());
- return m_buffer.buffer()[i];
- }
-
- T& operator[](size_t i) { return at(i); }
- const T& operator[](size_t i) const { return at(i); }
-
- T* data() { return m_buffer.buffer(); }
- const T* data() const { return m_buffer.buffer(); }
- T** dataSlot() { return m_buffer.bufferSlot(); }
-
- iterator begin() { return data(); }
- iterator end() { return begin() + m_size; }
- const_iterator begin() const { return data(); }
- const_iterator end() const { return begin() + m_size; }
-
- T& first() { return at(0); }
- const T& first() const { return at(0); }
- T& last() { return at(size() - 1); }
- const T& last() const { return at(size() - 1); }
-
- template<typename U> size_t find(const U&) const;
- template<typename U> size_t reverseFind(const U&) const;
-
- void shrink(size_t size);
- void grow(size_t size);
- void resize(size_t size);
- void reserveCapacity(size_t newCapacity);
- bool tryReserveCapacity(size_t newCapacity);
- void reserveInitialCapacity(size_t initialCapacity);
- void shrinkCapacity(size_t newCapacity);
- void shrinkToFit() { shrinkCapacity(size()); }
-
- void clear() { shrinkCapacity(0); }
-
- template<typename U> void append(const U*, size_t);
- template<typename U> void append(const U&);
- template<typename U> void uncheckedAppend(const U& val);
- template<size_t otherCapacity> void append(const Vector<T, otherCapacity>&);
- template<typename U> bool tryAppend(const U*, size_t);
-
- template<typename U> void insert(size_t position, const U*, size_t);
- template<typename U> void insert(size_t position, const U&);
- template<typename U, size_t c> void insert(size_t position, const Vector<U, c>&);
-
- template<typename U> void prepend(const U*, size_t);
- template<typename U> void prepend(const U&);
- template<typename U, size_t c> void prepend(const Vector<U, c>&);
-
- void remove(size_t position);
- void remove(size_t position, size_t length);
-
- void removeLast()
- {
- ASSERT(!isEmpty());
- shrink(size() - 1);
- }
-
- Vector(size_t size, const T& val)
- : m_size(size)
- , m_buffer(size)
- {
- if (begin())
- TypeOperations::uninitializedFill(begin(), end(), val);
- }
-
- void fill(const T&, size_t);
- void fill(const T& val) { fill(val, size()); }
-
- template<typename Iterator> void appendRange(Iterator start, Iterator end);
-
- T* releaseBuffer();
-
- void swap(Vector<T, inlineCapacity>& other)
- {
- std::swap(m_size, other.m_size);
- m_buffer.swap(other.m_buffer);
- }
-
- void checkConsistency();
-
- private:
- void expandCapacity(size_t newMinCapacity);
- const T* expandCapacity(size_t newMinCapacity, const T*);
- bool tryExpandCapacity(size_t newMinCapacity);
- const T* tryExpandCapacity(size_t newMinCapacity, const T*);
- template<typename U> U* expandCapacity(size_t newMinCapacity, U*);
-
- size_t m_size;
- Buffer m_buffer;
- };
-
-#if PLATFORM(QT)
- template<typename T>
- QDataStream& operator<<(QDataStream& stream, const Vector<T>& data)
- {
- stream << qint64(data.size());
- foreach (const T& i, data)
- stream << i;
- return stream;
- }
-
- template<typename T>
- QDataStream& operator>>(QDataStream& stream, Vector<T>& data)
- {
- data.clear();
- qint64 count;
- T item;
- stream >> count;
- data.reserveCapacity(count);
- for (qint64 i = 0; i < count; ++i) {
- stream >> item;
- data.append(item);
- }
- return stream;
- }
-#endif
-
- template<typename T, size_t inlineCapacity>
- Vector<T, inlineCapacity>::Vector(const Vector& other)
- : m_size(other.size())
- , m_buffer(other.capacity())
- {
- if (begin())
- TypeOperations::uninitializedCopy(other.begin(), other.end(), begin());
- }
-
- template<typename T, size_t inlineCapacity>
- template<size_t otherCapacity>
- Vector<T, inlineCapacity>::Vector(const Vector<T, otherCapacity>& other)
- : m_size(other.size())
- , m_buffer(other.capacity())
- {
- if (begin())
- TypeOperations::uninitializedCopy(other.begin(), other.end(), begin());
- }
-
- template<typename T, size_t inlineCapacity>
- Vector<T, inlineCapacity>& Vector<T, inlineCapacity>::operator=(const Vector<T, inlineCapacity>& other)
- {
- if (&other == this)
- return *this;
-
- if (size() > other.size())
- shrink(other.size());
- else if (other.size() > capacity()) {
- clear();
- reserveCapacity(other.size());
- if (!begin())
- return *this;
- }
-
-// Works around an assert in VS2010. See https://connect.microsoft.com/VisualStudio/feedback/details/558044/std-copy-should-not-check-dest-when-first-last
-#if COMPILER(MSVC) && defined(_ITERATOR_DEBUG_LEVEL) && _ITERATOR_DEBUG_LEVEL
- if (!begin())
- return *this;
-#endif
-
- std::copy(other.begin(), other.begin() + size(), begin());
- TypeOperations::uninitializedCopy(other.begin() + size(), other.end(), end());
- m_size = other.size();
-
- return *this;
- }
-
- inline bool typelessPointersAreEqual(const void* a, const void* b) { return a == b; }
-
- template<typename T, size_t inlineCapacity>
- template<size_t otherCapacity>
- Vector<T, inlineCapacity>& Vector<T, inlineCapacity>::operator=(const Vector<T, otherCapacity>& other)
- {
- // If the inline capacities match, we should call the more specific
- // template. If the inline capacities don't match, the two objects
- // shouldn't be allocated the same address.
- ASSERT(!typelessPointersAreEqual(&other, this));
-
- if (size() > other.size())
- shrink(other.size());
- else if (other.size() > capacity()) {
- clear();
- reserveCapacity(other.size());
- if (!begin())
- return *this;
- }
-
-// Works around an assert in VS2010. See https://connect.microsoft.com/VisualStudio/feedback/details/558044/std-copy-should-not-check-dest-when-first-last
-#if COMPILER(MSVC) && defined(_ITERATOR_DEBUG_LEVEL) && _ITERATOR_DEBUG_LEVEL
- if (!begin())
- return *this;
-#endif
-
- std::copy(other.begin(), other.begin() + size(), begin());
- TypeOperations::uninitializedCopy(other.begin() + size(), other.end(), end());
- m_size = other.size();
-
- return *this;
- }
-
- template<typename T, size_t inlineCapacity>
- template<typename U>
- size_t Vector<T, inlineCapacity>::find(const U& value) const
- {
- for (size_t i = 0; i < size(); ++i) {
- if (at(i) == value)
- return i;
- }
- return notFound;
- }
-
- template<typename T, size_t inlineCapacity>
- template<typename U>
- size_t Vector<T, inlineCapacity>::reverseFind(const U& value) const
- {
- for (size_t i = 1; i <= size(); ++i) {
- const size_t index = size() - i;
- if (at(index) == value)
- return index;
- }
- return notFound;
- }
-
- template<typename T, size_t inlineCapacity>
- void Vector<T, inlineCapacity>::fill(const T& val, size_t newSize)
- {
- if (size() > newSize)
- shrink(newSize);
- else if (newSize > capacity()) {
- clear();
- reserveCapacity(newSize);
- if (!begin())
- return;
- }
-
- std::fill(begin(), end(), val);
- TypeOperations::uninitializedFill(end(), begin() + newSize, val);
- m_size = newSize;
- }
-
- template<typename T, size_t inlineCapacity>
- template<typename Iterator>
- void Vector<T, inlineCapacity>::appendRange(Iterator start, Iterator end)
- {
- for (Iterator it = start; it != end; ++it)
- append(*it);
- }
-
- template<typename T, size_t inlineCapacity>
- void Vector<T, inlineCapacity>::expandCapacity(size_t newMinCapacity)
- {
- reserveCapacity(max(newMinCapacity, max(static_cast<size_t>(16), capacity() + capacity() / 4 + 1)));
- }
-
- template<typename T, size_t inlineCapacity>
- const T* Vector<T, inlineCapacity>::expandCapacity(size_t newMinCapacity, const T* ptr)
- {
- if (ptr < begin() || ptr >= end()) {
- expandCapacity(newMinCapacity);
- return ptr;
- }
- size_t index = ptr - begin();
- expandCapacity(newMinCapacity);
- return begin() + index;
- }
-
- template<typename T, size_t inlineCapacity>
- bool Vector<T, inlineCapacity>::tryExpandCapacity(size_t newMinCapacity)
- {
- return tryReserveCapacity(max(newMinCapacity, max(static_cast<size_t>(16), capacity() + capacity() / 4 + 1)));
- }
-
- template<typename T, size_t inlineCapacity>
- const T* Vector<T, inlineCapacity>::tryExpandCapacity(size_t newMinCapacity, const T* ptr)
- {
- if (ptr < begin() || ptr >= end()) {
- if (!tryExpandCapacity(newMinCapacity))
- return 0;
- return ptr;
- }
- size_t index = ptr - begin();
- if (!tryExpandCapacity(newMinCapacity))
- return 0;
- return begin() + index;
- }
-
- template<typename T, size_t inlineCapacity> template<typename U>
- inline U* Vector<T, inlineCapacity>::expandCapacity(size_t newMinCapacity, U* ptr)
- {
- expandCapacity(newMinCapacity);
- return ptr;
- }
-
- template<typename T, size_t inlineCapacity>
- inline void Vector<T, inlineCapacity>::resize(size_t size)
- {
- if (size <= m_size)
- TypeOperations::destruct(begin() + size, end());
- else {
- if (size > capacity())
- expandCapacity(size);
- if (begin())
- TypeOperations::initialize(end(), begin() + size);
- }
-
- m_size = size;
- }
-
- template<typename T, size_t inlineCapacity>
- void Vector<T, inlineCapacity>::shrink(size_t size)
- {
- ASSERT(size <= m_size);
- TypeOperations::destruct(begin() + size, end());
- m_size = size;
- }
-
- template<typename T, size_t inlineCapacity>
- void Vector<T, inlineCapacity>::grow(size_t size)
- {
- ASSERT(size >= m_size);
- if (size > capacity())
- expandCapacity(size);
- if (begin())
- TypeOperations::initialize(end(), begin() + size);
- m_size = size;
- }
-
- template<typename T, size_t inlineCapacity>
- void Vector<T, inlineCapacity>::reserveCapacity(size_t newCapacity)
- {
- if (newCapacity <= capacity())
- return;
- T* oldBuffer = begin();
- T* oldEnd = end();
- m_buffer.allocateBuffer(newCapacity);
- if (begin())
- TypeOperations::move(oldBuffer, oldEnd, begin());
- m_buffer.deallocateBuffer(oldBuffer);
- }
-
- template<typename T, size_t inlineCapacity>
- bool Vector<T, inlineCapacity>::tryReserveCapacity(size_t newCapacity)
- {
- if (newCapacity <= capacity())
- return true;
- T* oldBuffer = begin();
- T* oldEnd = end();
- if (!m_buffer.tryAllocateBuffer(newCapacity))
- return false;
- ASSERT(begin());
- TypeOperations::move(oldBuffer, oldEnd, begin());
- m_buffer.deallocateBuffer(oldBuffer);
- return true;
- }
-
- template<typename T, size_t inlineCapacity>
- inline void Vector<T, inlineCapacity>::reserveInitialCapacity(size_t initialCapacity)
- {
- ASSERT(!m_size);
- ASSERT(capacity() == inlineCapacity);
- if (initialCapacity > inlineCapacity)
- m_buffer.allocateBuffer(initialCapacity);
- }
-
- template<typename T, size_t inlineCapacity>
- void Vector<T, inlineCapacity>::shrinkCapacity(size_t newCapacity)
- {
- if (newCapacity >= capacity())
- return;
-
- if (newCapacity < size())
- shrink(newCapacity);
-
- T* oldBuffer = begin();
- if (newCapacity > 0) {
- T* oldEnd = end();
- m_buffer.allocateBuffer(newCapacity);
- if (begin() != oldBuffer)
- TypeOperations::move(oldBuffer, oldEnd, begin());
- }
-
- m_buffer.deallocateBuffer(oldBuffer);
- m_buffer.restoreInlineBufferIfNeeded();
- }
-
- // Templatizing these is better than just letting the conversion happen implicitly,
- // because for instance it allows a PassRefPtr to be appended to a RefPtr vector
- // without refcount thrash.
-
- template<typename T, size_t inlineCapacity> template<typename U>
- void Vector<T, inlineCapacity>::append(const U* data, size_t dataSize)
- {
- size_t newSize = m_size + dataSize;
- if (newSize > capacity()) {
- data = expandCapacity(newSize, data);
- if (!begin())
- return;
- }
- if (newSize < m_size)
- CRASH();
- T* dest = end();
- for (size_t i = 0; i < dataSize; ++i)
- new (&dest[i]) T(data[i]);
- m_size = newSize;
- }
-
- template<typename T, size_t inlineCapacity> template<typename U>
- bool Vector<T, inlineCapacity>::tryAppend(const U* data, size_t dataSize)
- {
- size_t newSize = m_size + dataSize;
- if (newSize > capacity()) {
- data = tryExpandCapacity(newSize, data);
- if (!data)
- return false;
- ASSERT(begin());
- }
- if (newSize < m_size)
- return false;
- T* dest = end();
- for (size_t i = 0; i < dataSize; ++i)
- new (&dest[i]) T(data[i]);
- m_size = newSize;
- return true;
- }
-
- template<typename T, size_t inlineCapacity> template<typename U>
- ALWAYS_INLINE void Vector<T, inlineCapacity>::append(const U& val)
- {
- const U* ptr = &val;
- if (size() == capacity()) {
- ptr = expandCapacity(size() + 1, ptr);
- if (!begin())
- return;
- }
-
-#if COMPILER(MSVC7_OR_LOWER)
- // FIXME: MSVC7 generates compilation errors when trying to assign
- // a pointer to a Vector of its base class (i.e. can't downcast). So far
- // I've been unable to determine any logical reason for this, so I can
- // only assume it is a bug with the compiler. Casting is a bad solution,
- // however, because it subverts implicit conversions, so a better
- // one is needed.
- new (end()) T(static_cast<T>(*ptr));
-#else
- new (end()) T(*ptr);
-#endif
- ++m_size;
- }
-
- // This version of append saves a branch in the case where you know that the
- // vector's capacity is large enough for the append to succeed.
-
- template<typename T, size_t inlineCapacity> template<typename U>
- inline void Vector<T, inlineCapacity>::uncheckedAppend(const U& val)
- {
- ASSERT(size() < capacity());
- const U* ptr = &val;
- new (end()) T(*ptr);
- ++m_size;
- }
-
- // This method should not be called append, a better name would be appendElements.
- // It could also be eliminated entirely, and call sites could just use
- // appendRange(val.begin(), val.end()).
- template<typename T, size_t inlineCapacity> template<size_t otherCapacity>
- inline void Vector<T, inlineCapacity>::append(const Vector<T, otherCapacity>& val)
- {
- append(val.begin(), val.size());
- }
-
- template<typename T, size_t inlineCapacity> template<typename U>
- void Vector<T, inlineCapacity>::insert(size_t position, const U* data, size_t dataSize)
- {
- ASSERT(position <= size());
- size_t newSize = m_size + dataSize;
- if (newSize > capacity()) {
- data = expandCapacity(newSize, data);
- if (!begin())
- return;
- }
- if (newSize < m_size)
- CRASH();
- T* spot = begin() + position;
- TypeOperations::moveOverlapping(spot, end(), spot + dataSize);
- for (size_t i = 0; i < dataSize; ++i)
- new (&spot[i]) T(data[i]);
- m_size = newSize;
- }
-
- template<typename T, size_t inlineCapacity> template<typename U>
- inline void Vector<T, inlineCapacity>::insert(size_t position, const U& val)
- {
- ASSERT(position <= size());
- const U* data = &val;
- if (size() == capacity()) {
- data = expandCapacity(size() + 1, data);
- if (!begin())
- return;
- }
- T* spot = begin() + position;
- TypeOperations::moveOverlapping(spot, end(), spot + 1);
- new (spot) T(*data);
- ++m_size;
- }
-
- template<typename T, size_t inlineCapacity> template<typename U, size_t c>
- inline void Vector<T, inlineCapacity>::insert(size_t position, const Vector<U, c>& val)
- {
- insert(position, val.begin(), val.size());
- }
-
- template<typename T, size_t inlineCapacity> template<typename U>
- void Vector<T, inlineCapacity>::prepend(const U* data, size_t dataSize)
- {
- insert(0, data, dataSize);
- }
-
- template<typename T, size_t inlineCapacity> template<typename U>
- inline void Vector<T, inlineCapacity>::prepend(const U& val)
- {
- insert(0, val);
- }
-
- template<typename T, size_t inlineCapacity> template<typename U, size_t c>
- inline void Vector<T, inlineCapacity>::prepend(const Vector<U, c>& val)
- {
- insert(0, val.begin(), val.size());
- }
-
- template<typename T, size_t inlineCapacity>
- inline void Vector<T, inlineCapacity>::remove(size_t position)
- {
- ASSERT(position < size());
- T* spot = begin() + position;
- spot->~T();
- TypeOperations::moveOverlapping(spot + 1, end(), spot);
- --m_size;
- }
-
- template<typename T, size_t inlineCapacity>
- inline void Vector<T, inlineCapacity>::remove(size_t position, size_t length)
- {
- ASSERT(position < size());
- ASSERT(position + length <= size());
- T* beginSpot = begin() + position;
- T* endSpot = beginSpot + length;
- TypeOperations::destruct(beginSpot, endSpot);
- TypeOperations::moveOverlapping(endSpot, end(), beginSpot);
- m_size -= length;
- }
-
- template<typename T, size_t inlineCapacity>
- inline T* Vector<T, inlineCapacity>::releaseBuffer()
- {
- T* buffer = m_buffer.releaseBuffer();
- if (inlineCapacity && !buffer && m_size) {
- // If the vector had some data, but no buffer to release,
- // that means it was using the inline buffer. In that case,
- // we create a brand new buffer so the caller always gets one.
- size_t bytes = m_size * sizeof(T);
- buffer = static_cast<T*>(fastMalloc(bytes));
- memcpy(buffer, data(), bytes);
- }
- m_size = 0;
- return buffer;
- }
-
- template<typename T, size_t inlineCapacity>
- inline void Vector<T, inlineCapacity>::checkConsistency()
- {
-#if !ASSERT_DISABLED
- for (size_t i = 0; i < size(); ++i)
- ValueCheck<T>::checkConsistency(at(i));
-#endif
- }
-
- template<typename T, size_t inlineCapacity>
- void deleteAllValues(const Vector<T, inlineCapacity>& collection)
- {
- typedef typename Vector<T, inlineCapacity>::const_iterator iterator;
- iterator end = collection.end();
- for (iterator it = collection.begin(); it != end; ++it)
- delete *it;
- }
-
- template<typename T, size_t inlineCapacity>
- inline void swap(Vector<T, inlineCapacity>& a, Vector<T, inlineCapacity>& b)
- {
- a.swap(b);
- }
-
- template<typename T, size_t inlineCapacity>
- bool operator==(const Vector<T, inlineCapacity>& a, const Vector<T, inlineCapacity>& b)
- {
- if (a.size() != b.size())
- return false;
-
- return VectorTypeOperations<T>::compare(a.data(), b.data(), a.size());
- }
-
- template<typename T, size_t inlineCapacity>
- inline bool operator!=(const Vector<T, inlineCapacity>& a, const Vector<T, inlineCapacity>& b)
- {
- return !(a == b);
- }
-
-#if !ASSERT_DISABLED
- template<typename T> struct ValueCheck<Vector<T> > {
- typedef Vector<T> TraitType;
- static void checkConsistency(const Vector<T>& v)
- {
- v.checkConsistency();
- }
- };
-#endif
-
-} // namespace WTF
-
-using WTF::Vector;
-
-#endif // WTF_Vector_h
generated by cgit v1.1 at 2025-05-25 01:00:36 +0000