gecko/js/xpconnect/public/nsTArrayHelpers.h
Ryan VanderMeulen e7c57435cb Bug 798123 - Fix build bustage. r=Waldo
CLOSED TREE
2012-10-18 22:21:38 -04:00

91 lines
2.5 KiB
C++

/* 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/. */
#ifndef __NSTARRAYHELPERS_H__
#define __NSTARRAYHELPERS_H__
template <class T>
inline nsresult
nsTArrayToJSArray(JSContext* aCx, const nsTArray<T>& aSourceArray,
JSObject** aResultArray)
{
MOZ_ASSERT(aCx);
JSAutoRequest ar(aCx);
JSObject* arrayObj = JS_NewArrayObject(aCx, aSourceArray.Length(), nullptr);
if (!arrayObj) {
NS_WARNING("JS_NewArrayObject failed!");
return NS_ERROR_OUT_OF_MEMORY;
}
JSObject* global = JS_GetGlobalForScopeChain(aCx);
MOZ_ASSERT(global);
for (uint32_t index = 0; index < aSourceArray.Length(); index++) {
nsCOMPtr<nsISupports> obj;
nsresult rv = aSourceArray[index]->QueryInterface(NS_GET_IID(nsISupports), getter_AddRefs(obj));
NS_ENSURE_SUCCESS(rv, rv);
jsval wrappedVal;
rv = nsContentUtils::WrapNative(aCx, global, obj, &wrappedVal, nullptr, true);
NS_ENSURE_SUCCESS(rv, rv);
if (!JS_SetElement(aCx, arrayObj, index, &wrappedVal)) {
NS_WARNING("JS_SetElement failed!");
return NS_ERROR_FAILURE;
}
}
if (!JS_FreezeObject(aCx, arrayObj)) {
NS_WARNING("JS_FreezeObject failed!");
return NS_ERROR_FAILURE;
}
*aResultArray = arrayObj;
return NS_OK;
}
template <>
inline nsresult
nsTArrayToJSArray<nsString>(JSContext* aCx,
const nsTArray<nsString>& aSourceArray,
JSObject** aResultArray)
{
MOZ_ASSERT(aCx);
JSAutoRequest ar(aCx);
JSObject* arrayObj = JS_NewArrayObject(aCx, aSourceArray.Length(), nullptr);
if (!arrayObj) {
NS_WARNING("JS_NewArrayObject failed!");
return NS_ERROR_OUT_OF_MEMORY;
}
for (uint32_t index = 0; index < aSourceArray.Length(); index++) {
JSString* s = JS_NewUCStringCopyN(aCx, aSourceArray[index].BeginReading(),
aSourceArray[index].Length());
if(!s) {
NS_WARNING("Memory allocation error!");
return NS_ERROR_OUT_OF_MEMORY;
}
jsval wrappedVal = STRING_TO_JSVAL(s);
if (!JS_SetElement(aCx, arrayObj, index, &wrappedVal)) {
NS_WARNING("JS_SetElement failed!");
return NS_ERROR_FAILURE;
}
}
if (!JS_FreezeObject(aCx, arrayObj)) {
NS_WARNING("JS_FreezeObject failed!");
return NS_ERROR_FAILURE;
}
*aResultArray = arrayObj;
return NS_OK;
}
#endif /* __NSTARRAYHELPERS_H__ */