pjs/dom/indexedDB/IDBKeyRange.cpp

409 строки
11 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Indexed Database.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Ben Turner <bent.mozilla@gmail.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "IDBKeyRange.h"
#include "nsIXPConnect.h"
#include "nsDOMClassInfo.h"
#include "nsJSUtils.h"
#include "nsThreadUtils.h"
#include "nsContentUtils.h"
#include "Key.h"
USING_INDEXEDDB_NAMESPACE
namespace {
inline
bool
ReturnKeyRange(JSContext* aCx,
jsval* aVp,
IDBKeyRange* aKeyRange)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aCx, "Null pointer!");
NS_ASSERTION(aVp, "Null pointer!");
NS_ASSERTION(aKeyRange, "Null pointer!");
nsIXPConnect* xpc = nsContentUtils::XPConnect();
NS_ASSERTION(xpc, "This should never be null!");
JSObject* global = JS_GetGlobalForScopeChain(aCx);
if (!global) {
NS_WARNING("Couldn't get global object!");
return false;
}
nsCOMPtr<nsIXPConnectJSObjectHolder> holder;
if (NS_FAILED(xpc->WrapNative(aCx, global, aKeyRange,
NS_GET_IID(nsIIDBKeyRange),
getter_AddRefs(holder)))) {
JS_ReportError(aCx, "Couldn't wrap IDBKeyRange object.");
return false;
}
JSObject* result;
if (NS_FAILED(holder->GetJSObject(&result))) {
JS_ReportError(aCx, "Couldn't get JSObject from wrapper.");
return false;
}
JS_SET_RVAL(aCx, aVp, OBJECT_TO_JSVAL(result));
return true;
}
inline
nsresult
GetKeyFromJSVal(JSContext* aCx,
jsval aVal,
Key& aKey,
bool aAllowUnset = false)
{
nsresult rv = aKey.SetFromJSVal(aCx, aVal);
if (NS_FAILED(rv)) {
NS_ASSERTION(NS_ERROR_GET_MODULE(rv) == NS_ERROR_MODULE_DOM_INDEXEDDB,
"Bad error code!");
return rv;
}
if (aKey.IsUnset() && !aAllowUnset) {
return NS_ERROR_DOM_INDEXEDDB_DATA_ERR;
}
return NS_OK;
}
inline
void
ThrowException(JSContext* aCx,
nsresult aErrorCode)
{
NS_ASSERTION(NS_FAILED(aErrorCode), "Not an error code!");
if (!JS_IsExceptionPending(aCx)) {
nsDOMClassInfo::ThrowJSException(aCx, aErrorCode);
}
}
inline
bool
GetKeyFromJSValOrThrow(JSContext* aCx,
jsval aVal,
Key& aKey)
{
nsresult rv = GetKeyFromJSVal(aCx, aVal, aKey);
if (NS_FAILED(rv)) {
ThrowException(aCx, rv);
return false;
}
return true;
}
JSBool
MakeOnlyKeyRange(JSContext* aCx,
uintN aArgc,
jsval* aVp)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
jsval val;
if (!JS_ConvertArguments(aCx, aArgc, JS_ARGV(aCx, aVp), "v", &val)) {
return false;
}
nsRefPtr<IDBKeyRange> keyRange = new IDBKeyRange(false, false, true);
if (!GetKeyFromJSValOrThrow(aCx, val, keyRange->Lower())) {
return false;
}
return ReturnKeyRange(aCx, aVp, keyRange);
}
JSBool
MakeLowerBoundKeyRange(JSContext* aCx,
uintN aArgc,
jsval* aVp)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
jsval val;
JSBool open = false;
if (!JS_ConvertArguments(aCx, aArgc, JS_ARGV(aCx, aVp), "v/b", &val, &open)) {
return false;
}
nsRefPtr<IDBKeyRange> keyRange = new IDBKeyRange(open, true, false);
if (!GetKeyFromJSValOrThrow(aCx, val, keyRange->Lower())) {
return false;
}
return ReturnKeyRange(aCx, aVp, keyRange);
}
JSBool
MakeUpperBoundKeyRange(JSContext* aCx,
uintN aArgc,
jsval* aVp)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
jsval val;
JSBool open = false;
if (!JS_ConvertArguments(aCx, aArgc, JS_ARGV(aCx, aVp), "v/b", &val, &open)) {
return false;
}
nsRefPtr<IDBKeyRange> keyRange = new IDBKeyRange(true, open, false);
if (!GetKeyFromJSValOrThrow(aCx, val, keyRange->Upper())) {
return false;
}
return ReturnKeyRange(aCx, aVp, keyRange);
}
JSBool
MakeBoundKeyRange(JSContext* aCx,
uintN aArgc,
jsval* aVp)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
jsval lowerVal, upperVal;
JSBool lowerOpen = false, upperOpen = false;
if (!JS_ConvertArguments(aCx, aArgc, JS_ARGV(aCx, aVp), "vv/bb", &lowerVal,
&upperVal, &lowerOpen, &upperOpen)) {
return false;
}
nsRefPtr<IDBKeyRange> keyRange = new IDBKeyRange(lowerOpen, upperOpen, false);
if (!GetKeyFromJSValOrThrow(aCx, lowerVal, keyRange->Lower()) ||
!GetKeyFromJSValOrThrow(aCx, upperVal, keyRange->Upper())) {
return false;
}
if (keyRange->Lower() > keyRange->Upper() ||
(keyRange->Lower() == keyRange->Upper() && (lowerOpen || upperOpen))) {
ThrowException(aCx, NS_ERROR_DOM_INDEXEDDB_DATA_ERR);
return false;
}
return ReturnKeyRange(aCx, aVp, keyRange);
}
#define KEYRANGE_FUNCTION_FLAGS (JSPROP_ENUMERATE | JSPROP_PERMANENT)
const JSFunctionSpec gKeyRangeConstructors[] = {
JS_FN("only", MakeOnlyKeyRange, 1, KEYRANGE_FUNCTION_FLAGS),
JS_FN("lowerBound", MakeLowerBoundKeyRange, 1, KEYRANGE_FUNCTION_FLAGS),
JS_FN("upperBound", MakeUpperBoundKeyRange, 1, KEYRANGE_FUNCTION_FLAGS),
JS_FN("bound", MakeBoundKeyRange, 2, KEYRANGE_FUNCTION_FLAGS),
JS_FS_END
};
#undef KEYRANGE_FUNCTION_FLAGS
} // anonymous namespace
// static
JSBool
IDBKeyRange::DefineConstructors(JSContext* aCx,
JSObject* aObject)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aCx, "Null pointer!");
NS_ASSERTION(aObject, "Null pointer!");
// Add the constructor methods for key ranges.
return JS_DefineFunctions(aCx, aObject,
const_cast<JSFunctionSpec*>(gKeyRangeConstructors));
}
// static
nsresult
IDBKeyRange::FromJSVal(JSContext* aCx,
const jsval& aVal,
IDBKeyRange** aKeyRange)
{
nsresult rv;
nsRefPtr<IDBKeyRange> keyRange;
if (JSVAL_IS_VOID(aVal) || JSVAL_IS_NULL(aVal)) {
// undefined and null returns no IDBKeyRange.
}
else if (JSVAL_IS_PRIMITIVE(aVal) ||
JS_IsArrayObject(aCx, JSVAL_TO_OBJECT(aVal)) ||
JS_ObjectIsDate(aCx, JSVAL_TO_OBJECT(aVal))) {
// A valid key returns an 'only' IDBKeyRange.
keyRange = new IDBKeyRange(false, false, true);
rv = GetKeyFromJSVal(aCx, aVal, keyRange->Lower());
if (NS_FAILED(rv)) {
return rv;
}
}
else {
// An object is not permitted unless it's another IDBKeyRange.
nsIXPConnect* xpc = nsContentUtils::XPConnect();
NS_ASSERTION(xpc, "This should never be null!");
nsCOMPtr<nsIXPConnectWrappedNative> wrapper;
rv = xpc->GetWrappedNativeOfJSObject(aCx, JSVAL_TO_OBJECT(aVal),
getter_AddRefs(wrapper));
NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
nsCOMPtr<nsIIDBKeyRange> iface;
if (!wrapper || !(iface = do_QueryInterface(wrapper->Native()))) {
// Some random JS object?
return NS_ERROR_DOM_INDEXEDDB_DATA_ERR;
}
keyRange = static_cast<IDBKeyRange*>(iface.get());
}
keyRange.forget(aKeyRange);
return NS_OK;
}
NS_IMPL_CYCLE_COLLECTION_CLASS(IDBKeyRange)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(IDBKeyRange)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(IDBKeyRange)
if (JSVAL_IS_GCTHING(tmp->mCachedLowerVal)) {
void *gcThing = JSVAL_TO_GCTHING(tmp->mCachedLowerVal);
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_CALLBACK(gcThing, "mCachedLowerVal")
}
if (JSVAL_IS_GCTHING(tmp->mCachedUpperVal)) {
void *gcThing = JSVAL_TO_GCTHING(tmp->mCachedUpperVal);
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_CALLBACK(gcThing, "mCachedUpperVal")
}
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(IDBKeyRange)
if (tmp->mRooted) {
NS_DROP_JS_OBJECTS(tmp, IDBKeyRange);
tmp->mCachedLowerVal = JSVAL_VOID;
tmp->mCachedUpperVal = JSVAL_VOID;
tmp->mHaveCachedLowerVal = false;
tmp->mHaveCachedUpperVal = false;
tmp->mRooted = false;
}
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(IDBKeyRange)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_ENTRY(nsIIDBKeyRange)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(IDBKeyRange)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(IDBKeyRange)
NS_IMPL_CYCLE_COLLECTING_RELEASE(IDBKeyRange)
DOMCI_DATA(IDBKeyRange, IDBKeyRange)
NS_IMETHODIMP
IDBKeyRange::GetLower(JSContext* aCx,
jsval* aLower)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (!mHaveCachedLowerVal) {
if (!mRooted) {
NS_HOLD_JS_OBJECTS(this, IDBKeyRange);
mRooted = true;
}
nsresult rv = Lower().ToJSVal(aCx, &mCachedLowerVal);
NS_ENSURE_SUCCESS(rv, rv);
mHaveCachedLowerVal = true;
}
*aLower = mCachedLowerVal;
return NS_OK;
}
NS_IMETHODIMP
IDBKeyRange::GetUpper(JSContext* aCx,
jsval* aUpper)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (!mHaveCachedUpperVal) {
if (!mRooted) {
NS_HOLD_JS_OBJECTS(this, IDBKeyRange);
mRooted = true;
}
nsresult rv = Upper().ToJSVal(aCx, &mCachedUpperVal);
NS_ENSURE_SUCCESS(rv, rv);
mHaveCachedUpperVal = true;
}
*aUpper = mCachedUpperVal;
return NS_OK;
}
NS_IMETHODIMP
IDBKeyRange::GetLowerOpen(bool* aLowerOpen)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
*aLowerOpen = mLowerOpen;
return NS_OK;
}
NS_IMETHODIMP
IDBKeyRange::GetUpperOpen(bool* aUpperOpen)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
*aUpperOpen = mUpperOpen;
return NS_OK;
}