gecko-dev/dom/payments/PaymentRequestUtils.cpp
Eden Chuang 608ad8a775 Bug 1387385 - Remove all nsIJSON usage in PaymentRequestUtils.cpp. r=baku
Instead of using nsIJSON, directly calling JS_Stringify and JS_ParseJSON for
JSON object serialization/deserialization.
2017-08-09 17:25:02 +08:00

76 lines
2.3 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsArrayUtils.h"
#include "PaymentRequestUtils.h"
#include "nsIMutableArray.h"
#include "nsISupportsPrimitives.h"
namespace mozilla {
namespace dom {
static bool
WriteCallback(const char16_t* aBuf, uint32_t aLength, void* aData)
{
nsAString* result = static_cast<nsAString*>(aData);
result->Append(static_cast<const char16_t*>(aBuf),
static_cast<uint32_t>(aLength));
return true;
}
nsresult
SerializeFromJSObject(JSContext* aCx, JS::HandleObject aObject, nsAString& aSerializedObject)
{
MOZ_ASSERT(aCx);
JS::RootedValue value(aCx, JS::ObjectValue(*aObject));
return SerializeFromJSVal(aCx, value, aSerializedObject);
}
nsresult
SerializeFromJSVal(JSContext* aCx, JS::HandleValue aValue, nsAString& aSerializedValue)
{
MOZ_ASSERT(aCx);
aSerializedValue.Truncate();
JS::RootedValue value(aCx, aValue.get());
nsAutoString serializedValue;
NS_ENSURE_TRUE(JS_Stringify(aCx, &value, nullptr, JS::NullHandleValue,
WriteCallback, &serializedValue), NS_ERROR_XPC_BAD_CONVERT_JS);
NS_ENSURE_TRUE(!serializedValue.IsEmpty(), NS_ERROR_FAILURE);
aSerializedValue = serializedValue;
return NS_OK;
}
nsresult
DeserializeToJSObject(const nsAString& aSerializedObject, JSContext* aCx, JS::MutableHandleObject aObject)
{
MOZ_ASSERT(aCx);
JS::RootedValue value(aCx);
nsresult rv = DeserializeToJSValue(aSerializedObject, aCx, &value);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (value.isObject()) {
aObject.set(&value.toObject());
} else {
aObject.set(nullptr);
}
return NS_OK;
}
nsresult
DeserializeToJSValue(const nsAString& aSerializedObject, JSContext* aCx, JS::MutableHandleValue aValue)
{
MOZ_ASSERT(aCx);
if (!JS_ParseJSON(aCx, static_cast<const char16_t*>(PromiseFlatString(aSerializedObject).get()),
aSerializedObject.Length(), aValue)) {
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
} // end of namespace dom
} // end of namespace mozilla