зеркало из https://github.com/mozilla/gecko-dev.git
145 строки
4.5 KiB
C++
145 строки
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/ModuleLoader.h"
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#include "nsISupports.h"
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#include "nsIObserver.h"
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#include "xpcIJSModuleLoader.h"
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#include "nsClassHashtable.h"
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#include "nsDataHashtable.h"
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#include "jsapi.h"
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#include "xpcIJSGetFactory.h"
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class nsIFile;
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class nsIJSRuntimeService;
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class nsIPrincipal;
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class nsIXPConnectJSObjectHolder;
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/* 6bd13476-1dd2-11b2-bbef-f0ccb5fa64b6 (thanks, mozbot) */
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#define MOZJSCOMPONENTLOADER_CID \
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{0x6bd13476, 0x1dd2, 0x11b2, \
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{ 0xbb, 0xef, 0xf0, 0xcc, 0xb5, 0xfa, 0x64, 0xb6 }}
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#define MOZJSCOMPONENTLOADER_CONTRACTID "@mozilla.org/moz/jsloader;1"
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class JSCLContextHelper;
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class mozJSComponentLoader : public mozilla::ModuleLoader,
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public xpcIJSModuleLoader,
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public nsIObserver
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{
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friend class JSCLContextHelper;
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_XPCIJSMODULELOADER
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NS_DECL_NSIOBSERVER
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mozJSComponentLoader();
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virtual ~mozJSComponentLoader();
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// ModuleLoader
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const mozilla::Module* LoadModule(mozilla::FileLocation &aFile);
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nsresult FindTargetObject(JSContext* aCx,
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JS::MutableHandleObject aTargetObject);
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static mozJSComponentLoader* Get() { return sSelf; }
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void NoteSubScript(JS::HandleScript aScript, JS::HandleObject aThisObject);
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protected:
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static mozJSComponentLoader* sSelf;
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nsresult ReallyInit();
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void UnloadModules();
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JSObject* PrepareObjectForLocation(JSCLContextHelper& aCx,
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nsIFile* aComponentFile,
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nsIURI *aComponent,
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bool aReuseLoaderGlobal,
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bool *aRealFile);
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nsresult ObjectForLocation(nsIFile* aComponentFile,
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nsIURI *aComponent,
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JSObject **aObject,
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char **location,
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bool aCatchException,
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JS::MutableHandleValue aException);
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nsresult ImportInto(const nsACString &aLocation,
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JS::HandleObject targetObj,
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JSContext *callercx,
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JS::MutableHandleObject vp);
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nsCOMPtr<nsIComponentManager> mCompMgr;
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nsCOMPtr<nsIJSRuntimeService> mRuntimeService;
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nsCOMPtr<nsIPrincipal> mSystemPrincipal;
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nsCOMPtr<nsIXPConnectJSObjectHolder> mLoaderGlobal;
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JSRuntime *mRuntime;
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JSContext *mContext;
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class ModuleEntry : public mozilla::Module
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{
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public:
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ModuleEntry() : mozilla::Module() {
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mVersion = mozilla::Module::kVersion;
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mCIDs = NULL;
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mContractIDs = NULL;
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mCategoryEntries = NULL;
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getFactoryProc = GetFactory;
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loadProc = NULL;
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unloadProc = NULL;
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obj = nullptr;
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location = nullptr;
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}
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~ModuleEntry() {
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Clear();
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}
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void Clear() {
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getfactoryobj = NULL;
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if (obj) {
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JSAutoRequest ar(sSelf->mContext);
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JSAutoCompartment ac(sSelf->mContext, obj);
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JS_SetAllNonReservedSlotsToUndefined(sSelf->mContext, obj);
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JS_RemoveObjectRoot(sSelf->mContext, &obj);
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}
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if (location)
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NS_Free(location);
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obj = NULL;
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location = NULL;
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}
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static already_AddRefed<nsIFactory> GetFactory(const mozilla::Module& module,
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const mozilla::Module::CIDEntry& entry);
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nsCOMPtr<xpcIJSGetFactory> getfactoryobj;
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JSObject *obj;
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char *location;
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};
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friend class ModuleEntry;
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// Modules are intentionally leaked, but still cleared.
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static PLDHashOperator ClearModules(const nsACString& key, ModuleEntry*& entry, void* cx);
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nsDataHashtable<nsCStringHashKey, ModuleEntry*> mModules;
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nsClassHashtable<nsCStringHashKey, ModuleEntry> mImports;
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nsDataHashtable<nsCStringHashKey, ModuleEntry*> mInProgressImports;
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nsDataHashtable<nsPtrHashKey<JSScript>, JSObject*> mThisObjects;
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bool mInitialized;
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bool mReuseLoaderGlobal;
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};
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