diff options
Diffstat (limited to 'layout/base/FramePropertyTable.cpp')
| -rw-r--r-- | layout/base/FramePropertyTable.cpp | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/layout/base/FramePropertyTable.cpp b/layout/base/FramePropertyTable.cpp deleted file mode 100644 index 0fd9b1c37..000000000 --- a/layout/base/FramePropertyTable.cpp +++ /dev/null @@ -1,239 +0,0 @@ -/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- - * This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this - * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ - -#include "FramePropertyTable.h" - -#include "mozilla/MemoryReporting.h" - -namespace mozilla { - -void -FramePropertyTable::SetInternal( - const nsIFrame* aFrame, UntypedDescriptor aProperty, void* aValue) -{ - NS_ASSERTION(aFrame, "Null frame?"); - NS_ASSERTION(aProperty, "Null property?"); - - if (mLastFrame != aFrame || !mLastEntry) { - mLastFrame = aFrame; - mLastEntry = mEntries.PutEntry(aFrame); - } - Entry* entry = mLastEntry; - - if (!entry->mProp.IsArray()) { - if (!entry->mProp.mProperty) { - // Empty entry, so we can just store our property in the empty slot - entry->mProp.mProperty = aProperty; - entry->mProp.mValue = aValue; - return; - } - if (entry->mProp.mProperty == aProperty) { - // Just overwrite the current value - entry->mProp.DestroyValueFor(aFrame); - entry->mProp.mValue = aValue; - return; - } - - // We need to expand the single current entry to an array - PropertyValue current = entry->mProp; - entry->mProp.mProperty = nullptr; - static_assert(sizeof(nsTArray<PropertyValue>) <= sizeof(void *), - "Property array must fit entirely within entry->mProp.mValue"); - new (&entry->mProp.mValue) nsTArray<PropertyValue>(4); - entry->mProp.ToArray()->AppendElement(current); - } - - nsTArray<PropertyValue>* array = entry->mProp.ToArray(); - nsTArray<PropertyValue>::index_type index = - array->IndexOf(aProperty, 0, PropertyComparator()); - if (index != nsTArray<PropertyValue>::NoIndex) { - PropertyValue* pv = &array->ElementAt(index); - pv->DestroyValueFor(aFrame); - pv->mValue = aValue; - return; - } - - array->AppendElement(PropertyValue(aProperty, aValue)); -} - -void* -FramePropertyTable::GetInternal( - const nsIFrame* aFrame, UntypedDescriptor aProperty, bool* aFoundResult) -{ - NS_ASSERTION(aFrame, "Null frame?"); - NS_ASSERTION(aProperty, "Null property?"); - - if (aFoundResult) { - *aFoundResult = false; - } - - if (mLastFrame != aFrame) { - mLastFrame = aFrame; - mLastEntry = mEntries.GetEntry(mLastFrame); - } - Entry* entry = mLastEntry; - if (!entry) - return nullptr; - - if (entry->mProp.mProperty == aProperty) { - if (aFoundResult) { - *aFoundResult = true; - } - return entry->mProp.mValue; - } - if (!entry->mProp.IsArray()) { - // There's just one property and it's not the one we want, bail - return nullptr; - } - - nsTArray<PropertyValue>* array = entry->mProp.ToArray(); - nsTArray<PropertyValue>::index_type index = - array->IndexOf(aProperty, 0, PropertyComparator()); - if (index == nsTArray<PropertyValue>::NoIndex) - return nullptr; - - if (aFoundResult) { - *aFoundResult = true; - } - - return array->ElementAt(index).mValue; -} - -void* -FramePropertyTable::RemoveInternal( - const nsIFrame* aFrame, UntypedDescriptor aProperty, bool* aFoundResult) -{ - NS_ASSERTION(aFrame, "Null frame?"); - NS_ASSERTION(aProperty, "Null property?"); - - if (aFoundResult) { - *aFoundResult = false; - } - - if (mLastFrame != aFrame) { - mLastFrame = aFrame; - mLastEntry = mEntries.GetEntry(aFrame); - } - Entry* entry = mLastEntry; - if (!entry) - return nullptr; - - if (entry->mProp.mProperty == aProperty) { - // There's only one entry and it's the one we want - void* value = entry->mProp.mValue; - - // Here it's ok to use RemoveEntry() -- which may resize mEntries -- - // because we null mLastEntry at the same time. - mEntries.RemoveEntry(entry); - mLastEntry = nullptr; - if (aFoundResult) { - *aFoundResult = true; - } - return value; - } - if (!entry->mProp.IsArray()) { - // There's just one property and it's not the one we want, bail - return nullptr; - } - - nsTArray<PropertyValue>* array = entry->mProp.ToArray(); - nsTArray<PropertyValue>::index_type index = - array->IndexOf(aProperty, 0, PropertyComparator()); - if (index == nsTArray<PropertyValue>::NoIndex) { - // No such property, bail - return nullptr; - } - - if (aFoundResult) { - *aFoundResult = true; - } - - void* result = array->ElementAt(index).mValue; - - uint32_t last = array->Length() - 1; - array->ElementAt(index) = array->ElementAt(last); - array->RemoveElementAt(last); - - if (last == 1) { - PropertyValue pv = array->ElementAt(0); - array->~nsTArray<PropertyValue>(); - entry->mProp = pv; - } - - return result; -} - -void -FramePropertyTable::DeleteInternal( - const nsIFrame* aFrame, UntypedDescriptor aProperty) -{ - NS_ASSERTION(aFrame, "Null frame?"); - NS_ASSERTION(aProperty, "Null property?"); - - bool found; - void* v = RemoveInternal(aFrame, aProperty, &found); - if (found) { - PropertyValue pv(aProperty, v); - pv.DestroyValueFor(aFrame); - } -} - -/* static */ void -FramePropertyTable::DeleteAllForEntry(Entry* aEntry) -{ - if (!aEntry->mProp.IsArray()) { - aEntry->mProp.DestroyValueFor(aEntry->GetKey()); - return; - } - - nsTArray<PropertyValue>* array = aEntry->mProp.ToArray(); - for (uint32_t i = 0; i < array->Length(); ++i) { - array->ElementAt(i).DestroyValueFor(aEntry->GetKey()); - } - array->~nsTArray<PropertyValue>(); -} - -void -FramePropertyTable::DeleteAllFor(const nsIFrame* aFrame) -{ - NS_ASSERTION(aFrame, "Null frame?"); - - Entry* entry = mEntries.GetEntry(aFrame); - if (!entry) - return; - - if (mLastFrame == aFrame) { - // Flush cache. We assume DeleteAllForEntry will be called before - // a frame is destroyed. - mLastFrame = nullptr; - mLastEntry = nullptr; - } - - DeleteAllForEntry(entry); - - // mLastEntry points into mEntries, so we use RawRemoveEntry() which will not - // resize mEntries. - mEntries.RawRemoveEntry(entry); -} - -void -FramePropertyTable::DeleteAll() -{ - mLastFrame = nullptr; - mLastEntry = nullptr; - - for (auto iter = mEntries.Iter(); !iter.Done(); iter.Next()) { - DeleteAllForEntry(iter.Get()); - } - mEntries.Clear(); -} - -size_t -FramePropertyTable::SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf) const -{ - return mEntries.SizeOfExcludingThis(aMallocSizeOf); -} - -} // namespace mozilla |