Move the BreakCycle() method from the cycle solver to SVGResources

third_party/WebKit/Source/core/layout/svg/SVGResourcesCycleSolver.cpp

 /*
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "core/layout/svg/SVGResourcesCycleSolver.h"
 
-// Set to a value > 0, to debug the resource cache.
-#define DEBUG_CYCLE_DETECTION 0
-
-#include "core/layout/svg/LayoutSVGResourceClipper.h"
-#include "core/layout/svg/LayoutSVGResourceFilter.h"
-#include "core/layout/svg/LayoutSVGResourceMarker.h"
-#include "core/layout/svg/LayoutSVGResourceMasker.h"
-#include "core/layout/svg/LayoutSVGResourcePaintServer.h"
+#include "core/layout/svg/LayoutSVGResourceContainer.h"
 #include "core/layout/svg/SVGResources.h"
 #include "core/layout/svg/SVGResourcesCache.h"
 
 namespace blink {
 
 SVGResourcesCycleSolver::SVGResourcesCycleSolver(LayoutObject* layout_object,
                                                  SVGResources* resources)
     : layout_object_(layout_object), resources_(resources) {
   DCHECK(layout_object_);
   DCHECK(resources_);
@@ skipping 61 matching lines @@
 
   ResourceSet local_resources;
   resources_->BuildSetOfResources(local_resources);
 
   // This performs a depth-first search for a back-edge in all the
   // (potentially disjoint) graphs formed by the resources referenced by
   // |m_layoutObject|.
   for (auto* local_resource : local_resources) {
     if (active_resources_.Contains(local_resource) ||
         ResourceContainsCycles(local_resource))
-      BreakCycle(local_resource);
+      resources_->ClearReferencesTo(local_resource);
   }
 
   active_resources_.Clear();
 }
 
-void SVGResourcesCycleSolver::BreakCycle(
-    LayoutSVGResourceContainer* resource_leading_to_cycle) {
-  DCHECK(resource_leading_to_cycle);
-  if (resource_leading_to_cycle == resources_->LinkedResource()) {
-    resources_->ResetLinkedResource();
-    return;
-  }
-
-  switch (resource_leading_to_cycle->ResourceType()) {
-    case kMaskerResourceType:
-      DCHECK_EQ(resource_leading_to_cycle, resources_->Masker());
-      resources_->ResetMasker();
-      break;
-    case kMarkerResourceType:
-      DCHECK(resource_leading_to_cycle == resources_->MarkerStart() ||
-             resource_leading_to_cycle == resources_->MarkerMid() ||
-             resource_leading_to_cycle == resources_->MarkerEnd());
-      if (resources_->MarkerStart() == resource_leading_to_cycle)
-        resources_->ResetMarkerStart();
-      if (resources_->MarkerMid() == resource_leading_to_cycle)
-        resources_->ResetMarkerMid();
-      if (resources_->MarkerEnd() == resource_leading_to_cycle)
-        resources_->ResetMarkerEnd();
-      break;
-    case kPatternResourceType:
-    case kLinearGradientResourceType:
-    case kRadialGradientResourceType:
-      DCHECK(resource_leading_to_cycle == resources_->Fill() ||
-             resource_leading_to_cycle == resources_->Stroke());
-      if (resources_->Fill() == resource_leading_to_cycle)
-        resources_->ResetFill();
-      if (resources_->Stroke() == resource_leading_to_cycle)
-        resources_->ResetStroke();
-      break;
-    case kFilterResourceType:
-      DCHECK_EQ(resource_leading_to_cycle, resources_->Filter());
-      resources_->ResetFilter();
-      break;
-    case kClipperResourceType:
-      DCHECK_EQ(resource_leading_to_cycle, resources_->Clipper());
-      resources_->ResetClipper();
-      break;
-    default:
-      NOTREACHED();
-      break;
-  }
-}
-
 }  // namespace blink