Convert RenderBlockFlow code to use FloatingObject references

Source/core/layout/FloatingObjects.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. 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
@@ skipping 198 matching lines @@
 
     LayoutUnit lowestFloatBottom = 0;
     const FloatingObjectSet& floatingObjectSet = set();
     FloatingObjectSetIterator end = floatingObjectSet.end();
     if (floatType == FloatingObject::FloatLeftRight) {
         FloatingObject* lowestFloatingObjectLeft = nullptr;
         FloatingObject* lowestFloatingObjectRight = nullptr;
         LayoutUnit lowestFloatBottomLeft = 0;
         LayoutUnit lowestFloatBottomRight = 0;
         for (FloatingObjectSetIterator it = floatingObjectSet.begin(); it != end; ++it) {
-            FloatingObject* floatingObject = it->get();
-            if (floatingObject->isPlaced()) {
-                FloatingObject::Type curType = floatingObject->type();
+            FloatingObject& floatingObject = *it->get();
+            if (floatingObject.isPlaced()) {
+                FloatingObject::Type curType = floatingObject.type();
                 LayoutUnit curFloatLogicalBottom = m_layoutObject->logicalBottomForFloat(floatingObject);
                 if (curType & FloatingObject::FloatLeft && curFloatLogicalBottom > lowestFloatBottomLeft) {
                     lowestFloatBottomLeft = curFloatLogicalBottom;
-                    lowestFloatingObjectLeft = floatingObject;
+                    lowestFloatingObjectLeft = &floatingObject;
                 }
                 if (curType & FloatingObject::FloatRight && curFloatLogicalBottom > lowestFloatBottomRight) {
                     lowestFloatBottomRight = curFloatLogicalBottom;
-                    lowestFloatingObjectRight = floatingObject;
+                    lowestFloatingObjectRight = &floatingObject;
                 }
             }
         }
         lowestFloatBottom = std::max(lowestFloatBottomLeft, lowestFloatBottomRight);
         setCachedLowestFloatLogicalBottom(isInHorizontalWritingMode, FloatingObject::FloatLeft, lowestFloatingObjectLeft);
         setCachedLowestFloatLogicalBottom(isInHorizontalWritingMode, FloatingObject::FloatRight, lowestFloatingObjectRight);
     } else {
         FloatingObject* lowestFloatingObject = nullptr;
         for (FloatingObjectSetIterator it = floatingObjectSet.begin(); it != end; ++it) {
-            FloatingObject* floatingObject = it->get();
-            if (floatingObject->isPlaced() && floatingObject->type() == floatType) {
+            FloatingObject& floatingObject = *it->get();
+            if (floatingObject.isPlaced() && floatingObject.type() == floatType) {
                 if (m_layoutObject->logicalBottomForFloat(floatingObject) > lowestFloatBottom) {
-                    lowestFloatingObject = floatingObject;
+                    lowestFloatingObject = &floatingObject;
                     lowestFloatBottom = m_layoutObject->logicalBottomForFloat(floatingObject);
                 }
             }
         }
         setCachedLowestFloatLogicalBottom(isInHorizontalWritingMode, floatType, lowestFloatingObject);
     }
 
     return lowestFloatBottom;
 }
 
 bool FloatingObjects::hasLowestFloatLogicalBottomCached(bool isHorizontal, FloatingObject::Type type) const
 {
     int floatIndex = static_cast<int>(type) - 1;
     ASSERT(floatIndex < static_cast<int>(sizeof(m_lowestFloatBottomCache) / sizeof(FloatBottomCachedValue)));
     ASSERT(floatIndex >= 0);
     return (m_cachedHorizontalWritingMode == isHorizontal && !m_lowestFloatBottomCache[floatIndex].dirty);
 }
 
 LayoutUnit FloatingObjects::getCachedlowestFloatLogicalBottom(FloatingObject::Type type) const
 {
     int floatIndex = static_cast<int>(type) - 1;
     ASSERT(floatIndex < static_cast<int>(sizeof(m_lowestFloatBottomCache) / sizeof(FloatBottomCachedValue)));
     ASSERT(floatIndex >= 0);
     if (!m_lowestFloatBottomCache[floatIndex].floatingObject)
         return LayoutUnit();
-    return m_layoutObject->logicalBottomForFloat(m_lowestFloatBottomCache[floatIndex].floatingObject);
+    return m_layoutObject->logicalBottomForFloat(*m_lowestFloatBottomCache[floatIndex].floatingObject);
 }
 
 void FloatingObjects::setCachedLowestFloatLogicalBottom(bool isHorizontal, FloatingObject::Type type, FloatingObject* floatingObject)
 {
     int floatIndex = static_cast<int>(type) - 1;
     ASSERT(floatIndex < static_cast<int>(sizeof(m_lowestFloatBottomCache) / sizeof(FloatBottomCachedValue)));
     ASSERT(floatIndex >= 0);
     m_cachedHorizontalWritingMode = isHorizontal;
     m_lowestFloatBottomCache[floatIndex].floatingObject = floatingObject;
     m_lowestFloatBottomCache[floatIndex].dirty = false;
 }
 
 FloatingObject* FloatingObjects::lowestFloatingObject() const
 {
     bool isInHorizontalWritingMode = m_horizontalWritingMode;
     if (!hasLowestFloatLogicalBottomCached(isInHorizontalWritingMode, FloatingObject::FloatLeft) && !hasLowestFloatLogicalBottomCached(isInHorizontalWritingMode, FloatingObject::FloatRight))
         return nullptr;
     FloatingObject* lowestLeftObject = m_lowestFloatBottomCache[0].floatingObject;
     FloatingObject* lowestRightObject = m_lowestFloatBottomCache[1].floatingObject;
-    LayoutUnit lowestFloatBottomLeft = lowestLeftObject ? m_layoutObject->logicalBottomForFloat(lowestLeftObject) : LayoutUnit();
-    LayoutUnit lowestFloatBottomRight = lowestRightObject ? m_layoutObject->logicalBottomForFloat(lowestRightObject) : LayoutUnit();
+    LayoutUnit lowestFloatBottomLeft = lowestLeftObject ? m_layoutObject->logicalBottomForFloat(*lowestLeftObject) : LayoutUnit();
+    LayoutUnit lowestFloatBottomRight = lowestRightObject ? m_layoutObject->logicalBottomForFloat(*lowestRightObject) : LayoutUnit();
 
     if (lowestFloatBottomLeft > lowestFloatBottomRight)
         return lowestLeftObject;
     return lowestRightObject;
 }
 
 void FloatingObjects::markLowestFloatLogicalBottomCacheAsDirty()
 {
     for (size_t i = 0; i < sizeof(m_lowestFloatBottomCache) / sizeof(FloatBottomCachedValue); ++i)
         m_lowestFloatBottomCache[i].dirty = true;
@@ skipping 18 matching lines @@
 }
 
 inline void FloatingObjects::decreaseObjectsCount(FloatingObject::Type type)
 {
     if (type == FloatingObject::FloatLeft)
         m_leftObjectsCount--;
     else
         m_rightObjectsCount--;
 }
 
-inline FloatingObjectInterval FloatingObjects::intervalForFloatingObject(FloatingObject* floatingObject)
+inline FloatingObjectInterval FloatingObjects::intervalForFloatingObject(FloatingObject& floatingObject)
 {
     if (m_horizontalWritingMode)
-        return FloatingObjectInterval(floatingObject->frameRect().pixelSnappedY(), floatingObject->frameRect().pixelSnappedMaxY(), floatingObject);
-    return FloatingObjectInterval(floatingObject->frameRect().pixelSnappedX(), floatingObject->frameRect().pixelSnappedMaxX(), floatingObject);
+        return FloatingObjectInterval(floatingObject.frameRect().pixelSnappedY(), floatingObject.frameRect().pixelSnappedMaxY(), &floatingObject);
+    return FloatingObjectInterval(floatingObject.frameRect().pixelSnappedX(), floatingObject.frameRect().pixelSnappedMaxX(), &floatingObject);
 }
 
-void FloatingObjects::addPlacedObject(FloatingObject* floatingObject)
+void FloatingObjects::addPlacedObject(FloatingObject& floatingObject)
 {
-    ASSERT(!floatingObject->isInPlacedTree());
+    ASSERT(!floatingObject.isInPlacedTree());
 
-    floatingObject->setIsPlaced(true);
+    floatingObject.setIsPlaced(true);
     if (m_placedFloatsTree.isInitialized())
         m_placedFloatsTree.add(intervalForFloatingObject(floatingObject));
 
 #if ENABLE(ASSERT)
-    floatingObject->setIsInPlacedTree(true);
+    floatingObject.setIsInPlacedTree(true);
 #endif
     markLowestFloatLogicalBottomCacheAsDirty();
 }
 
-void FloatingObjects::removePlacedObject(FloatingObject* floatingObject)
+void FloatingObjects::removePlacedObject(FloatingObject& floatingObject)
 {
-    ASSERT(floatingObject->isPlaced() && floatingObject->isInPlacedTree());
+    ASSERT(floatingObject.isPlaced() && floatingObject.isInPlacedTree());
 
     if (m_placedFloatsTree.isInitialized()) {
         bool removed = m_placedFloatsTree.remove(intervalForFloatingObject(floatingObject));
         ASSERT_UNUSED(removed, removed);
     }
 
-    floatingObject->setIsPlaced(false);
+    floatingObject.setIsPlaced(false);
 #if ENABLE(ASSERT)
-    floatingObject->setIsInPlacedTree(false);
+    floatingObject.setIsInPlacedTree(false);
 #endif
     markLowestFloatLogicalBottomCacheAsDirty();
 }
 
 FloatingObject* FloatingObjects::add(PassOwnPtr<FloatingObject> floatingObject)
 {
     FloatingObject* newObject = floatingObject.leakPtr();
     increaseObjectsCount(newObject->type());
     m_set.add(adoptPtr(newObject));
     if (newObject->isPlaced())
-        addPlacedObject(newObject);
+        addPlacedObject(*newObject);
     markLowestFloatLogicalBottomCacheAsDirty();
     return newObject;
 }
 
 void FloatingObjects::remove(FloatingObject* toBeRemoved)
 {
     decreaseObjectsCount(toBeRemoved->type());
     OwnPtr<FloatingObject> floatingObject = m_set.take(toBeRemoved);
     ASSERT(floatingObject->isPlaced() || !floatingObject->isInPlacedTree());
     if (floatingObject->isPlaced())
-        removePlacedObject(floatingObject.get());
+        removePlacedObject(*floatingObject);
     markLowestFloatLogicalBottomCacheAsDirty();
     ASSERT(!floatingObject->originatingLine());
 }
 
 void FloatingObjects::computePlacedFloatsTree()
 {
     ASSERT(!m_placedFloatsTree.isInitialized());
     if (m_set.isEmpty())
         return;
     m_placedFloatsTree.initIfNeeded(m_layoutObject->view()->intervalArena());
     FloatingObjectSetIterator it = m_set.begin();
     FloatingObjectSetIterator end = m_set.end();
     for (; it != end; ++it) {
-        FloatingObject* floatingObject = it->get();
-        if (floatingObject->isPlaced())
+        FloatingObject& floatingObject = *it->get();
+        if (floatingObject.isPlaced())
             m_placedFloatsTree.add(intervalForFloatingObject(floatingObject));
     }
 }
 
 LayoutUnit FloatingObjects::logicalLeftOffsetForPositioningFloat(LayoutUnit fixedOffset, LayoutUnit logicalTop, LayoutUnit *heightRemaining)
 {
     int logicalTopAsInt = roundToInt(logicalTop);
     ComputeFloatOffsetForFloatLayoutAdapter<FloatingObject::FloatLeft> adapter(m_layoutObject, logicalTopAsInt, logicalTopAsInt, fixedOffset);
     placedFloatsTree().allOverlapsWithAdapter(adapter);
 
@@ skipping 53 matching lines @@
     // The bottom of the object overlaps the float
     if (objectBottom > objectTop && objectBottom > floatTop && objectBottom <= floatBottom)
         return true;
 
     return false;
 }
 
 template<>
 inline bool ComputeFloatOffsetForFloatLayoutAdapter<FloatingObject::FloatLeft>::updateOffsetIfNeeded(const FloatingObject& floatingObject)
 {
-    LayoutUnit logicalRight = m_layoutObject->logicalRightForFloat(&floatingObject);
+    LayoutUnit logicalRight = m_layoutObject->logicalRightForFloat(floatingObject);
     if (logicalRight > m_offset) {
         m_offset = logicalRight;
         return true;
     }
     return false;
 }
 
 template<>
 inline bool ComputeFloatOffsetForFloatLayoutAdapter<FloatingObject::FloatRight>::updateOffsetIfNeeded(const FloatingObject& floatingObject)
 {
-    LayoutUnit logicalLeft = m_layoutObject->logicalLeftForFloat(&floatingObject);
+    LayoutUnit logicalLeft = m_layoutObject->logicalLeftForFloat(floatingObject);
     if (logicalLeft < m_offset) {
         m_offset = logicalLeft;
         return true;
     }
     return false;
 }
 
 template <FloatingObject::Type FloatTypeValue>
 LayoutUnit ComputeFloatOffsetForFloatLayoutAdapter<FloatTypeValue>::heightRemaining() const
 {
-    return this->m_outermostFloat ? this->m_layoutObject->logicalBottomForFloat(this->m_outermostFloat) - this->m_lineTop : LayoutUnit(1);
+    return this->m_outermostFloat ? this->m_layoutObject->logicalBottomForFloat(*this->m_outermostFloat) - this->m_lineTop : LayoutUnit(1);
 }
 
 template <FloatingObject::Type FloatTypeValue>
 inline void ComputeFloatOffsetAdapter<FloatTypeValue>::collectIfNeeded(const IntervalType& interval)
 {
-    const FloatingObject* floatingObject = interval.data();
-    if (floatingObject->type() != FloatTypeValue || !rangesIntersect(interval.low(), interval.high(), m_lineTop, m_lineBottom))
+    const FloatingObject& floatingObject = *(interval.data());
+    if (floatingObject.type() != FloatTypeValue || !rangesIntersect(interval.low(), interval.high(), m_lineTop, m_lineBottom))
         return;
 
     // Make sure the float hasn't changed since it was added to the placed floats tree.
-    ASSERT(floatingObject->isPlaced());
+    ASSERT(floatingObject.isPlaced());
     ASSERT(interval.low() == m_layoutObject->pixelSnappedLogicalTopForFloat(floatingObject));
     ASSERT(interval.high() == m_layoutObject->pixelSnappedLogicalBottomForFloat(floatingObject));
 
-    bool floatIsNewExtreme = updateOffsetIfNeeded(*floatingObject);
+    bool floatIsNewExtreme = updateOffsetIfNeeded(floatingObject);
     if (floatIsNewExtreme)
-        m_outermostFloat = floatingObject;
+        m_outermostFloat = &floatingObject;
 }
 
 template<>
 inline bool ComputeFloatOffsetForLineLayoutAdapter<FloatingObject::FloatLeft>::updateOffsetIfNeeded(const FloatingObject& floatingObject)
 {
-    LayoutUnit logicalRight = m_layoutObject->logicalRightForFloat(&floatingObject);
+    LayoutUnit logicalRight = m_layoutObject->logicalRightForFloat(floatingObject);
     if (ShapeOutsideInfo* shapeOutside = floatingObject.layoutObject()->shapeOutsideInfo()) {
         ShapeOutsideDeltas shapeDeltas = shapeOutside->computeDeltasForContainingBlockLine(*m_layoutObject, floatingObject, m_lineTop, m_lineBottom - m_lineTop);
         if (!shapeDeltas.lineOverlapsShape())
             return false;
 
         logicalRight += shapeDeltas.rightMarginBoxDelta();
     }
     if (logicalRight > m_offset) {
         m_offset = logicalRight;
         return true;
     }
 
     return false;
 }
 
 template<>
 inline bool ComputeFloatOffsetForLineLayoutAdapter<FloatingObject::FloatRight>::updateOffsetIfNeeded(const FloatingObject& floatingObject)
 {
-    LayoutUnit logicalLeft = m_layoutObject->logicalLeftForFloat(&floatingObject);
+    LayoutUnit logicalLeft = m_layoutObject->logicalLeftForFloat(floatingObject);
     if (ShapeOutsideInfo* shapeOutside = floatingObject.layoutObject()->shapeOutsideInfo()) {
         ShapeOutsideDeltas shapeDeltas = shapeOutside->computeDeltasForContainingBlockLine(*m_layoutObject, floatingObject, m_lineTop, m_lineBottom - m_lineTop);
         if (!shapeDeltas.lineOverlapsShape())
             return false;
 
         logicalLeft += shapeDeltas.leftMarginBoxDelta();
     }
     if (logicalLeft < m_offset) {
         m_offset = logicalLeft;
         return true;
@@ skipping 10 matching lines @@
 }
 
 String ValueToString<FloatingObject*>::string(const FloatingObject* floatingObject)
 {
     return String::format("%p (%dx%d %dx%d)", floatingObject, floatingObject->frameRect().pixelSnappedX(), floatingObject->frameRect().pixelSnappedY(), floatingObject->frameRect().pixelSnappedMaxX(), floatingObject->frameRect().pixelSnappedMaxY());
 }
 #endif
 
 
 } // namespace blink