mirror of
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116 lines
3.2 KiB
C++
116 lines
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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#ifndef mozilla_Module_h
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#define mozilla_Module_h
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#include "nscore.h"
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#include "nsID.h"
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#include "nsIFactory.h"
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#include "nsCOMPtr.h" // for already_AddRefed
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namespace mozilla {
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/**
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* A module implements one or more XPCOM components. This structure is used
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* for both binary and script modules, but the registration members
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* (cids/contractids/categoryentries) are unused for modules which are loaded
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* via a module loader.
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*/
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struct Module
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{
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static const unsigned int kVersion = 17;
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struct CIDEntry;
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typedef already_AddRefed<nsIFactory> (*GetFactoryProcPtr)
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(const Module& module, const CIDEntry& entry);
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typedef nsresult (*ConstructorProcPtr)(nsISupports* aOuter,
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const nsIID& aIID,
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void** aResult);
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typedef nsresult (*LoadFuncPtr)();
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typedef void (*UnloadFuncPtr)();
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/**
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* The constructor callback is an implementation detail of the default binary
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* loader and may be null.
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*/
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struct CIDEntry
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{
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const nsCID* cid;
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bool service;
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GetFactoryProcPtr getFactoryProc;
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ConstructorProcPtr constructorProc;
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};
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struct ContractIDEntry
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{
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const char* contractid;
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nsID const * cid;
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};
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struct CategoryEntry
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{
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const char* category;
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const char* entry;
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const char* value;
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};
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/**
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* Binary compatibility check, should be kModuleVersion.
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*/
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unsigned int mVersion;
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/**
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* An array of CIDs (class IDs) implemented by this module. The final entry
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* should be { NULL }.
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*/
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const CIDEntry* mCIDs;
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/**
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* An array of mappings from contractid to CID. The final entry should
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* be { NULL }.
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*/
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const ContractIDEntry* mContractIDs;
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/**
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* An array of category manager entries. The final entry should be
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* { NULL }.
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*/
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const CategoryEntry* mCategoryEntries;
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/**
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* When the component manager tries to get the factory for a CID, it first
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* checks for this module-level getfactory callback. If this function is
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* not implemented, it checks the CIDEntry getfactory callback. If that is
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* also NULL, a generic factory is generated using the CIDEntry constructor
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* callback which must be non-NULL.
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*/
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GetFactoryProcPtr getFactoryProc;
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/**
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* Optional Function which are called when this module is loaded and
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* at shutdown. These are not C++ constructor/destructors to avoid
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* calling them too early in startup or too late in shutdown.
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*/
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LoadFuncPtr loadProc;
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UnloadFuncPtr unloadProc;
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};
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} // namespace
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#if defined(XPCOM_TRANSLATE_NSGM_ENTRY_POINT)
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# define NSMODULE_NAME(_name) _name##_NSModule
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# define NSMODULE_DECL(_name) extern mozilla::Module const *const NSMODULE_NAME(_name)
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# define NSMODULE_DEFN(_name) NSMODULE_DECL(_name)
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#else
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# define NSMODULE_NAME(_name) NSModule
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# define NSMODULE_DEFN(_name) extern "C" NS_EXPORT mozilla::Module const *const NSModule
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#endif
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#endif // mozilla_Module_h
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