gecko/js/xpconnect/loader/mozJSComponentLoader.h

167 lines
5.5 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** 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 Mozilla Communicator client code, released
* March 31, 1998.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributors:
*
* Alternatively, the contents of this file may be used under the terms of
* either of 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 "plhash.h"
#include "jsapi.h"
#include "mozilla/ModuleLoader.h"
#include "nsIJSRuntimeService.h"
#include "nsIJSContextStack.h"
#include "nsISupports.h"
#include "nsIXPConnect.h"
#include "nsIFile.h"
#include "nsAutoPtr.h"
#include "nsIObjectInputStream.h"
#include "nsIObjectOutputStream.h"
#include "nsITimer.h"
#include "nsIObserver.h"
#include "xpcIJSModuleLoader.h"
#include "nsClassHashtable.h"
#include "nsDataHashtable.h"
#include "nsIPrincipal.h"
#include "mozilla/scache/StartupCache.h"
#include "xpcIJSGetFactory.h"
/* 6bd13476-1dd2-11b2-bbef-f0ccb5fa64b6 (thanks, mozbot) */
#define MOZJSCOMPONENTLOADER_CID \
{0x6bd13476, 0x1dd2, 0x11b2, \
{ 0xbb, 0xef, 0xf0, 0xcc, 0xb5, 0xfa, 0x64, 0xb6 }}
#define MOZJSCOMPONENTLOADER_CONTRACTID "@mozilla.org/moz/jsloader;1"
class mozJSComponentLoader : public mozilla::ModuleLoader,
public xpcIJSModuleLoader,
public nsIObserver
{
friend class JSCLContextHelper;
public:
NS_DECL_ISUPPORTS
NS_DECL_XPCIJSMODULELOADER
NS_DECL_NSIOBSERVER
mozJSComponentLoader();
virtual ~mozJSComponentLoader();
// ModuleLoader
const mozilla::Module* LoadModule(mozilla::FileLocation &aFile);
protected:
static mozJSComponentLoader* sSelf;
nsresult ReallyInit();
void UnloadModules();
nsresult GlobalForLocation(nsILocalFile* aComponentFile,
nsIURI *aComponent,
JSObject **aGlobal,
char **location,
jsval *exception);
nsresult ImportInto(const nsACString & aLocation,
JSObject * targetObj,
JSContext * callercx,
JSObject * *_retval);
nsCOMPtr<nsIComponentManager> mCompMgr;
nsCOMPtr<nsIJSRuntimeService> mRuntimeService;
nsCOMPtr<nsIThreadJSContextStack> mContextStack;
nsCOMPtr<nsIPrincipal> mSystemPrincipal;
JSRuntime *mRuntime;
JSContext *mContext;
class ModuleEntry : public mozilla::Module
{
public:
ModuleEntry() : mozilla::Module() {
mVersion = mozilla::Module::kVersion;
mCIDs = NULL;
mContractIDs = NULL;
mCategoryEntries = NULL;
getFactoryProc = GetFactory;
loadProc = NULL;
unloadProc = NULL;
global = nsnull;
location = nsnull;
}
~ModuleEntry() {
Clear();
}
void Clear() {
getfactoryobj = NULL;
if (global) {
JSAutoRequest ar(sSelf->mContext);
JSAutoEnterCompartment ac;
ac.enterAndIgnoreErrors(sSelf->mContext, global);
JS_ClearScope(sSelf->mContext, global);
JS_RemoveObjectRoot(sSelf->mContext, &global);
}
if (location)
NS_Free(location);
global = NULL;
location = NULL;
}
static already_AddRefed<nsIFactory> GetFactory(const mozilla::Module& module,
const mozilla::Module::CIDEntry& entry);
nsCOMPtr<xpcIJSGetFactory> getfactoryobj;
JSObject *global;
char *location;
};
friend class ModuleEntry;
// Modules are intentionally leaked, but still cleared.
static PLDHashOperator ClearModules(const nsACString& key, ModuleEntry*& entry, void* cx);
nsDataHashtable<nsCStringHashKey, ModuleEntry*> mModules;
nsClassHashtable<nsCStringHashKey, ModuleEntry> mImports;
nsDataHashtable<nsCStringHashKey, ModuleEntry*> mInProgressImports;
bool mInitialized;
};