js/xpconnect/public/nsTArrayHelpers.h@6474c204b198 (annotated)
js/xpconnect/public/nsTArrayHelpers.h
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #ifndef __NSTARRAYHELPERS_H__ |
| michael@0 | 8 | #define __NSTARRAYHELPERS_H__ |
| michael@0 | 9 | |
| michael@0 | 10 | #include "jsapi.h" |
| michael@0 | 11 | #include "nsContentUtils.h" |
| michael@0 | 12 | #include "nsTArray.h" |
| michael@0 | 13 | |
| michael@0 | 14 | template <class T> |
| michael@0 | 15 | inline nsresult |
| michael@0 | 16 | nsTArrayToJSArray(JSContext* aCx, const nsTArray<T>& aSourceArray, |
| michael@0 | 17 | JSObject** aResultArray) |
| michael@0 | 18 | { |
| michael@0 | 19 | MOZ_ASSERT(aCx); |
| michael@0 | 20 | |
| michael@0 | 21 | JS::Rooted<JSObject*> arrayObj(aCx, |
| michael@0 | 22 | JS_NewArrayObject(aCx, aSourceArray.Length())); |
| michael@0 | 23 | if (!arrayObj) { |
| michael@0 | 24 | NS_WARNING("JS_NewArrayObject failed!"); |
| michael@0 | 25 | return NS_ERROR_OUT_OF_MEMORY; |
| michael@0 | 26 | } |
| michael@0 | 27 | |
| michael@0 | 28 | for (uint32_t index = 0; index < aSourceArray.Length(); index++) { |
| michael@0 | 29 | nsCOMPtr<nsISupports> obj; |
| michael@0 | 30 | nsresult rv = aSourceArray[index]->QueryInterface(NS_GET_IID(nsISupports), getter_AddRefs(obj)); |
| michael@0 | 31 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 32 | |
| michael@0 | 33 | JS::RootedValue wrappedVal(aCx); |
| michael@0 | 34 | rv = nsContentUtils::WrapNative(aCx, obj, &wrappedVal); |
| michael@0 | 35 | NS_ENSURE_SUCCESS(rv, rv); |
| michael@0 | 36 | |
| michael@0 | 37 | if (!JS_SetElement(aCx, arrayObj, index, wrappedVal)) { |
| michael@0 | 38 | NS_WARNING("JS_SetElement failed!"); |
| michael@0 | 39 | return NS_ERROR_FAILURE; |
| michael@0 | 40 | } |
| michael@0 | 41 | } |
| michael@0 | 42 | |
| michael@0 | 43 | if (!JS_FreezeObject(aCx, arrayObj)) { |
| michael@0 | 44 | NS_WARNING("JS_FreezeObject failed!"); |
| michael@0 | 45 | return NS_ERROR_FAILURE; |
| michael@0 | 46 | } |
| michael@0 | 47 | |
| michael@0 | 48 | *aResultArray = arrayObj; |
| michael@0 | 49 | return NS_OK; |
| michael@0 | 50 | } |
| michael@0 | 51 | |
| michael@0 | 52 | template <> |
| michael@0 | 53 | inline nsresult |
| michael@0 | 54 | nsTArrayToJSArray<nsString>(JSContext* aCx, |
| michael@0 | 55 | const nsTArray<nsString>& aSourceArray, |
| michael@0 | 56 | JSObject** aResultArray) |
| michael@0 | 57 | { |
| michael@0 | 58 | MOZ_ASSERT(aCx); |
| michael@0 | 59 | |
| michael@0 | 60 | JS::Rooted<JSObject*> arrayObj(aCx, |
| michael@0 | 61 | JS_NewArrayObject(aCx, aSourceArray.Length())); |
| michael@0 | 62 | if (!arrayObj) { |
| michael@0 | 63 | NS_WARNING("JS_NewArrayObject failed!"); |
| michael@0 | 64 | return NS_ERROR_OUT_OF_MEMORY; |
| michael@0 | 65 | } |
| michael@0 | 66 | |
| michael@0 | 67 | JS::Rooted<JSString*> s(aCx); |
| michael@0 | 68 | for (uint32_t index = 0; index < aSourceArray.Length(); index++) { |
| michael@0 | 69 | s = JS_NewUCStringCopyN(aCx, aSourceArray[index].BeginReading(), |
| michael@0 | 70 | aSourceArray[index].Length()); |
| michael@0 | 71 | |
| michael@0 | 72 | if(!s) { |
| michael@0 | 73 | NS_WARNING("Memory allocation error!"); |
| michael@0 | 74 | return NS_ERROR_OUT_OF_MEMORY; |
| michael@0 | 75 | } |
| michael@0 | 76 | |
| michael@0 | 77 | if (!JS_SetElement(aCx, arrayObj, index, s)) { |
| michael@0 | 78 | NS_WARNING("JS_SetElement failed!"); |
| michael@0 | 79 | return NS_ERROR_FAILURE; |
| michael@0 | 80 | } |
| michael@0 | 81 | } |
| michael@0 | 82 | |
| michael@0 | 83 | if (!JS_FreezeObject(aCx, arrayObj)) { |
| michael@0 | 84 | NS_WARNING("JS_FreezeObject failed!"); |
| michael@0 | 85 | return NS_ERROR_FAILURE; |
| michael@0 | 86 | } |
| michael@0 | 87 | |
| michael@0 | 88 | *aResultArray = arrayObj; |
| michael@0 | 89 | return NS_OK; |
| michael@0 | 90 | } |
| michael@0 | 91 | |
| michael@0 | 92 | #endif /* __NSTARRAYHELPERS_H__ */ |
