Avoid more temporary ranges in connection with various TextIterators.

Source/core/dom/Range.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Gunnstein Lye (gunnstein@netcom.no)
  * (C) 2000 Frederik Holljen (frederik.holljen@hig.no)
  * (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2011 Motorola Mobility. 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
@@ skipping 1210 matching lines @@
 {
     if (!refNode) {
         exceptionState.throwDOMException(NotFoundError, "The node provided is null.");
         return;
     }
 
     // InvalidNodeTypeError: Raised if refNode or an ancestor of refNode is an Entity, Notation
     // or DocumentType node.
     for (Node* n = refNode; n; n = n->parentNode()) {
         switch (n->nodeType()) {
-            case Node::ATTRIBUTE_NODE:
-            case Node::CDATA_SECTION_NODE:
-            case Node::COMMENT_NODE:
-            case Node::DOCUMENT_FRAGMENT_NODE:
-            case Node::DOCUMENT_NODE:
-            case Node::ELEMENT_NODE:
-            case Node::PROCESSING_INSTRUCTION_NODE:
-            case Node::TEXT_NODE:
-                break;
-            case Node::DOCUMENT_TYPE_NODE:
-                exceptionState.throwDOMException(InvalidNodeTypeError, "The node provided is of type '" + refNode->nodeName() + "'.");
-                return;
+        case Node::ATTRIBUTE_NODE:
+        case Node::CDATA_SECTION_NODE:
+        case Node::COMMENT_NODE:
+        case Node::DOCUMENT_FRAGMENT_NODE:
+        case Node::DOCUMENT_NODE:
+        case Node::ELEMENT_NODE:
+        case Node::PROCESSING_INSTRUCTION_NODE:
+        case Node::TEXT_NODE:
+            break;
+        case Node::DOCUMENT_TYPE_NODE:
+            exceptionState.throwDOMException(InvalidNodeTypeError, "The node provided is of type '" + refNode->nodeName() + "'.");
+            return;
         }
     }
 
     if (m_ownerDocument != refNode->document())
         setDocument(refNode->document());
 
     m_start.setToStartOfNode(*refNode);
     m_end.setToEndOfNode(*refNode);
 }
 
+bool Range::selectNodeContents(Node* refNode, Position& start, Position& end)
+{
+    if (!refNode) {
+        return false;
+    }
+
+    for (Node* n = refNode; n; n = n->parentNode()) {
+        switch (n->nodeType()) {
+        case Node::ATTRIBUTE_NODE:
+        case Node::CDATA_SECTION_NODE:
+        case Node::COMMENT_NODE:
+        case Node::DOCUMENT_FRAGMENT_NODE:
+        case Node::DOCUMENT_NODE:
+        case Node::ELEMENT_NODE:
+        case Node::PROCESSING_INSTRUCTION_NODE:
+        case Node::TEXT_NODE:
+            break;
+        case Node::DOCUMENT_TYPE_NODE:
+            return false;
+        }
+    }
+
+    RangeBoundaryPoint startBoundaryPoint(refNode);
+    startBoundaryPoint.setToStartOfNode(*refNode);
+    start = startBoundaryPoint.toPosition();
+    RangeBoundaryPoint endBoundaryPoint(refNode);
+    endBoundaryPoint.setToEndOfNode(*refNode);
+    end = endBoundaryPoint.toPosition();
+    return true;
+}
+
 void Range::surroundContents(PassRefPtrWillBeRawPtr<Node> passNewParent, ExceptionState& exceptionState)
 {
     RefPtrWillBeRawPtr<Node> newParent = passNewParent;
     if (!newParent) {
         exceptionState.throwDOMException(NotFoundError, "The node provided is null.");
         return;
     }
 
     // InvalidStateError: Raised if the Range partially selects a non-Text node.
     Node* startNonTextContainer = m_start.container();
@@ skipping 489 matching lines @@
 
 void showTree(const blink::Range* range)
 {
     if (range && range->boundaryPointsValid()) {
         range->startContainer()->showTreeAndMark(range->startContainer(), "S", range->endContainer(), "E");
         fprintf(stderr, "start offset: %d, end offset: %d\n", range->startOffset(), range->endOffset());
     }
 }
 
 #endif