Oilpan: Introduce TempRangeScope to avoid needless Range attaches on Document.

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 98f5e3733f544847224d93f872bcc783599a4557..542d376d2dc473167b0cffcdc62db1f8ab5c43b5 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -3763,6 +3763,7 @@ void Document::moveNodeIteratorsToNewDocument(Node& node, Document& newDocument)
 
 void Document::updateRangesAfterChildrenChanged(ContainerNode* container)
 {
+    ASSERT(!TemporaryRangeScope::active());
     if (!m_ranges.isEmpty()) {
         AttachedRangeSet::const_iterator end = m_ranges.end();
         for (AttachedRangeSet::const_iterator it = m_ranges.begin(); it != end; ++it)
@@ -3772,6 +3773,7 @@ void Document::updateRangesAfterChildrenChanged(ContainerNode* container)
 
 void Document::updateRangesAfterNodeMovedToAnotherDocument(const Node& node)
 {
+    ASSERT(!TemporaryRangeScope::active());
     ASSERT(node.document() != this);
     if (m_ranges.isEmpty())
         return;
@@ -3783,6 +3785,7 @@ void Document::updateRangesAfterNodeMovedToAnotherDocument(const Node& node)
 
 void Document::nodeChildrenWillBeRemoved(ContainerNode& container)
 {
+    ASSERT(!TemporaryRangeScope::active());
     NoEventDispatchAssertion assertNoEventDispatch;
     if (!m_ranges.isEmpty()) {
         AttachedRangeSet::const_iterator end = m_ranges.end();
@@ -3807,6 +3810,7 @@ void Document::nodeChildrenWillBeRemoved(ContainerNode& container)
 
 void Document::nodeWillBeRemoved(Node& n)
 {
+    ASSERT(!TemporaryRangeScope::active());
     WillBeHeapHashSet<RawPtrWillBeWeakMember<NodeIterator> >::const_iterator nodeIteratorsEnd = m_nodeIterators.end();
     for (WillBeHeapHashSet<RawPtrWillBeWeakMember<NodeIterator> >::const_iterator it = m_nodeIterators.begin(); it != nodeIteratorsEnd; ++it)
         (*it)->nodeWillBeRemoved(n);
@@ -3826,6 +3830,7 @@ void Document::nodeWillBeRemoved(Node& n)
 
 void Document::didInsertText(Node* text, unsigned offset, unsigned length)
 {
+    ASSERT(!TemporaryRangeScope::active());
     if (!m_ranges.isEmpty()) {
         AttachedRangeSet::const_iterator end = m_ranges.end();
         for (AttachedRangeSet::const_iterator it = m_ranges.begin(); it != end; ++it)
@@ -3838,6 +3843,7 @@ void Document::didInsertText(Node* text, unsigned offset, unsigned length)
 
 void Document::didRemoveText(Node* text, unsigned offset, unsigned length)
 {
+    ASSERT(!TemporaryRangeScope::active());
     if (!m_ranges.isEmpty()) {
         AttachedRangeSet::const_iterator end = m_ranges.end();
         for (AttachedRangeSet::const_iterator it = m_ranges.begin(); it != end; ++it)
@@ -3851,6 +3857,7 @@ void Document::didRemoveText(Node* text, unsigned offset, unsigned length)
 
 void Document::didMergeTextNodes(Text& oldNode, unsigned offset)
 {
+    ASSERT(!TemporaryRangeScope::active());
     if (!m_ranges.isEmpty()) {
         NodeWithIndex oldNodeWithIndex(oldNode);
         AttachedRangeSet::const_iterator end = m_ranges.end();
@@ -3866,6 +3873,7 @@ void Document::didMergeTextNodes(Text& oldNode, unsigned offset)
 
 void Document::didSplitTextNode(Text& oldNode)
 {
+    ASSERT(!TemporaryRangeScope::active());
     if (!m_ranges.isEmpty()) {
         AttachedRangeSet::const_iterator end = m_ranges.end();
         for (AttachedRangeSet::const_iterator it = m_ranges.begin(); it != end; ++it)