The Tor Browser: dom/smil/nsSMILNullType.cpp@97036ab72558

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #include "nsSMILNullType.h"

     7 #include "nsSMILValue.h"

     8 #include "nsDebug.h"

    10 nsresult

    11 nsSMILNullType::Assign(nsSMILValue& aDest, const nsSMILValue& aSrc) const

    12 {

    13   NS_PRECONDITION(aDest.mType == aSrc.mType, "Incompatible SMIL types");

    14   NS_PRECONDITION(aSrc.mType == this, "Unexpected source type");

    15   aDest.mU    = aSrc.mU;

    16   aDest.mType = Singleton();

    17   return NS_OK;

    18 }

    20 bool

    21 nsSMILNullType::IsEqual(const nsSMILValue& aLeft,

    22                         const nsSMILValue& aRight) const

    23 {

    24   NS_PRECONDITION(aLeft.mType == aRight.mType, "Incompatible SMIL types");

    25   NS_PRECONDITION(aLeft.mType == this, "Unexpected type for SMIL value");

    27   return true;  // All null-typed values are equivalent.

    28 }

    30 nsresult

    31 nsSMILNullType::Add(nsSMILValue& aDest, const nsSMILValue& aValueToAdd,

    32                     uint32_t aCount) const

    33 {

    34   NS_NOTREACHED("Adding NULL type");

    35   return NS_ERROR_FAILURE;

    36 }

    38 nsresult

    39 nsSMILNullType::ComputeDistance(const nsSMILValue& aFrom,

    40                                 const nsSMILValue& aTo,

    41                                 double& aDistance) const

    42 {

    43   NS_NOTREACHED("Computing distance for NULL type");

    44   return NS_ERROR_FAILURE;

    45 }

    47 nsresult

    48 nsSMILNullType::Interpolate(const nsSMILValue& aStartVal,

    49                             const nsSMILValue& aEndVal,

    50                             double aUnitDistance,

    51                             nsSMILValue& aResult) const

    52 {

    53   NS_NOTREACHED("Interpolating NULL type");

    54   return NS_ERROR_FAILURE;

    55 }

The Tor Browser / file revision

dom/smil/nsSMILNullType.cpp@97036ab72558

dom/smil/nsSMILNullType.cpp