1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/xpconnect/public/nsTArrayHelpers.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,92 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim: set ts=8 sts=2 et sw=2 tw=80: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef __NSTARRAYHELPERS_H__
1.11 +#define __NSTARRAYHELPERS_H__
1.12 +
1.13 +#include "jsapi.h"
1.14 +#include "nsContentUtils.h"
1.15 +#include "nsTArray.h"
1.16 +
1.17 +template <class T>
1.18 +inline nsresult
1.19 +nsTArrayToJSArray(JSContext* aCx, const nsTArray<T>& aSourceArray,
1.20 + JSObject** aResultArray)
1.21 +{
1.22 + MOZ_ASSERT(aCx);
1.23 +
1.24 + JS::Rooted<JSObject*> arrayObj(aCx,
1.25 + JS_NewArrayObject(aCx, aSourceArray.Length()));
1.26 + if (!arrayObj) {
1.27 + NS_WARNING("JS_NewArrayObject failed!");
1.28 + return NS_ERROR_OUT_OF_MEMORY;
1.29 + }
1.30 +
1.31 + for (uint32_t index = 0; index < aSourceArray.Length(); index++) {
1.32 + nsCOMPtr<nsISupports> obj;
1.33 + nsresult rv = aSourceArray[index]->QueryInterface(NS_GET_IID(nsISupports), getter_AddRefs(obj));
1.34 + NS_ENSURE_SUCCESS(rv, rv);
1.35 +
1.36 + JS::RootedValue wrappedVal(aCx);
1.37 + rv = nsContentUtils::WrapNative(aCx, obj, &wrappedVal);
1.38 + NS_ENSURE_SUCCESS(rv, rv);
1.39 +
1.40 + if (!JS_SetElement(aCx, arrayObj, index, wrappedVal)) {
1.41 + NS_WARNING("JS_SetElement failed!");
1.42 + return NS_ERROR_FAILURE;
1.43 + }
1.44 + }
1.45 +
1.46 + if (!JS_FreezeObject(aCx, arrayObj)) {
1.47 + NS_WARNING("JS_FreezeObject failed!");
1.48 + return NS_ERROR_FAILURE;
1.49 + }
1.50 +
1.51 + *aResultArray = arrayObj;
1.52 + return NS_OK;
1.53 +}
1.54 +
1.55 +template <>
1.56 +inline nsresult
1.57 +nsTArrayToJSArray<nsString>(JSContext* aCx,
1.58 + const nsTArray<nsString>& aSourceArray,
1.59 + JSObject** aResultArray)
1.60 +{
1.61 + MOZ_ASSERT(aCx);
1.62 +
1.63 + JS::Rooted<JSObject*> arrayObj(aCx,
1.64 + JS_NewArrayObject(aCx, aSourceArray.Length()));
1.65 + if (!arrayObj) {
1.66 + NS_WARNING("JS_NewArrayObject failed!");
1.67 + return NS_ERROR_OUT_OF_MEMORY;
1.68 + }
1.69 +
1.70 + JS::Rooted<JSString*> s(aCx);
1.71 + for (uint32_t index = 0; index < aSourceArray.Length(); index++) {
1.72 + s = JS_NewUCStringCopyN(aCx, aSourceArray[index].BeginReading(),
1.73 + aSourceArray[index].Length());
1.74 +
1.75 + if(!s) {
1.76 + NS_WARNING("Memory allocation error!");
1.77 + return NS_ERROR_OUT_OF_MEMORY;
1.78 + }
1.79 +
1.80 + if (!JS_SetElement(aCx, arrayObj, index, s)) {
1.81 + NS_WARNING("JS_SetElement failed!");
1.82 + return NS_ERROR_FAILURE;
1.83 + }
1.84 + }
1.85 +
1.86 + if (!JS_FreezeObject(aCx, arrayObj)) {
1.87 + NS_WARNING("JS_FreezeObject failed!");
1.88 + return NS_ERROR_FAILURE;
1.89 + }
1.90 +
1.91 + *aResultArray = arrayObj;
1.92 + return NS_OK;
1.93 +}
1.94 +
1.95 +#endif /* __NSTARRAYHELPERS_H__ */
