The Tor Browser: dom/bindings/ToJSValue.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 /* vim: set ts=2 sw=2 et tw=79: */

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

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

     5  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #include "mozilla/dom/ToJSValue.h"

     8 #include "mozilla/dom/DOMException.h"

     9 #include "mozilla/dom/Exceptions.h"

    10 #include "nsAString.h"

    11 #include "nsContentUtils.h"

    12 #include "nsStringBuffer.h"

    13 #include "xpcpublic.h"

    15 namespace mozilla {

    16 namespace dom {

    18 bool

    19 ToJSValue(JSContext* aCx, const nsAString& aArgument,

    20           JS::MutableHandle<JS::Value> aValue)

    21 {

    22   // Make sure we're called in a compartment

    23   MOZ_ASSERT(JS::CurrentGlobalOrNull(aCx));

    25 // XXXkhuey I'd love to use xpc::NonVoidStringToJsval here, but it requires

    26   // a non-const nsAString for silly reasons.

    27   nsStringBuffer* sharedBuffer;

    28   if (!XPCStringConvert::ReadableToJSVal(aCx, aArgument, &sharedBuffer,

    29                                          aValue)) {

    30     return false;

    31   }

    33   if (sharedBuffer) {

    34     NS_ADDREF(sharedBuffer);

    35   }

    37   return true;

    38 }

    41 namespace tojsvalue_detail {

    43 bool

    44 ISupportsToJSValue(JSContext* aCx,

    45                    nsISupports* aArgument,

    46                    JS::MutableHandle<JS::Value> aValue)

    47 {

    48   nsresult rv = nsContentUtils::WrapNative(aCx, aArgument, aValue);

    49   return NS_SUCCEEDED(rv);

    50 }

    52 } // namespace tojsvalue_detail

    54 bool

    55 ToJSValue(JSContext* aCx,

    56           nsresult aArgument,

    57           JS::MutableHandle<JS::Value> aValue)

    58 {

    59   nsRefPtr<Exception> exception = CreateException(aCx, aArgument);

    60   return ToJSValue(aCx, exception, aValue);

    61 }

    63 } // namespace dom

    64 } // namespace mozilla

The Tor Browser / file revision

dom/bindings/ToJSValue.cpp@97036ab72558

dom/bindings/ToJSValue.cpp