Oilpan: move Range object to the oilpan heap.

Source/core/editing/PlainTextRange.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov.
  *
  * 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
@@ skipping 39 matching lines @@
 
 PlainTextRange::PlainTextRange(int start, int end)
     : m_start(start)
     , m_end(end)
 {
     ASSERT(start >= 0);
     ASSERT(end >= 0);
     ASSERT(start <= end);
 }
 
-PassRefPtr<Range> PlainTextRange::createRange(const ContainerNode& scope) const
+PassRefPtrWillBeRawPtr<Range> PlainTextRange::createRange(const ContainerNode& scope) const
 {
     return createRangeFor(scope, ForGeneric);
 }
 
-PassRefPtr<Range> PlainTextRange::createRangeForSelection(const ContainerNode& scope) const
+PassRefPtrWillBeRawPtr<Range> PlainTextRange::createRangeForSelection(const ContainerNode& scope) const
 {
     return createRangeFor(scope, ForSelection);
 }
 
-PassRefPtr<Range> PlainTextRange::createRangeFor(const ContainerNode& scope, GetRangeFor getRangeFor) const
+PassRefPtrWillBeRawPtr<Range> PlainTextRange::createRangeFor(const ContainerNode& scope, GetRangeFor getRangeFor) const
 {
     ASSERT(isNotNull());
 
-    RefPtr<Range> resultRange = scope.document().createRange();
+    RefPtrWillBeRawPtr<Range> resultRange = scope.document().createRange();
 
     size_t docTextPosition = 0;
     bool startRangeFound = false;
 
-    RefPtr<Range> textRunRange;
+    RefPtrWillBeRawPtr<Range> textRunRange = nullptr;
 
     TextIterator it(rangeOfContents(const_cast<ContainerNode*>(&scope)).get(), getRangeFor == ForSelection ? TextIteratorEmitsCharactersBetweenAllVisiblePositions : TextIteratorDefaultBehavior);
 
     // FIXME: the atEnd() check shouldn't be necessary, workaround for <http://bugs.webkit.org/show_bug.cgi?id=6289>.
     if (!start() && !length() && it.atEnd()) {
         textRunRange = it.range();
 
         resultRange->setStart(textRunRange->startContainer(), 0, ASSERT_NO_EXCEPTION);
         resultRange->setEnd(textRunRange->startContainer(), 0, ASSERT_NO_EXCEPTION);
 
         return resultRange.release();
     }
 
     for (; !it.atEnd(); it.advance()) {
         int len = it.length();
         textRunRange = it.range();
 
         bool foundStart = start() >= docTextPosition && start() <= docTextPosition + len;
         bool foundEnd = end() >= docTextPosition && end() <= docTextPosition + len;
 
         // Fix textRunRange->endPosition(), but only if foundStart || foundEnd, because it is only
         // in those cases that textRunRange is used.
         if (foundEnd) {
             // FIXME: This is a workaround for the fact that the end of a run is often at the wrong
             // position for emitted '\n's.
             if (len == 1 && it.characterAt(0) == '\n') {
                 scope.document().updateLayoutIgnorePendingStylesheets();
                 it.advance();
                 if (!it.atEnd()) {
-                    RefPtr<Range> range = it.range();
+                    RefPtrWillBeRawPtr<Range> range = it.range();
                     textRunRange->setEnd(range->startContainer(), range->startOffset(), ASSERT_NO_EXCEPTION);
                 } else {
                     Position runStart = textRunRange->startPosition();
                     Position runEnd = VisiblePosition(runStart).next().deepEquivalent();
                     if (runEnd.isNotNull())
                         textRunRange->setEnd(runEnd.containerNode(), runEnd.computeOffsetInContainerNode(), ASSERT_NO_EXCEPTION);
                 }
             }
         }
 
@@ skipping 44 matching lines @@
     // The critical assumption is that this only gets called with ranges that
     // concentrate on a given area containing the selection root. This is done
     // because of text fields and textareas. The DOM for those is not
     // directly in the document DOM, so ensure that the range does not cross a
     // boundary of one of those.
     if (range.startContainer() != &scope && !range.startContainer()->isDescendantOf(&scope))
         return PlainTextRange();
     if (range.endContainer() != scope && !range.endContainer()->isDescendantOf(&scope))
         return PlainTextRange();
 
-    RefPtr<Range> testRange = Range::create(scope.document(), const_cast<Node*>(&scope), 0, range.startContainer(), range.startOffset());
+    RefPtrWillBeRawPtr<Range> testRange = Range::create(scope.document(), const_cast<Node*>(&scope), 0, range.startContainer(), range.startOffset());
     ASSERT(testRange->startContainer() == &scope);
     size_t start = TextIterator::rangeLength(testRange.get());
 
     testRange->setEnd(range.endContainer(), range.endOffset(), IGNORE_EXCEPTION);
     ASSERT(testRange->startContainer() == &scope);
     size_t end = TextIterator::rangeLength(testRange.get());
 
     return PlainTextRange(start, end);
 }
 
 }