gecko-dev/xpcom/components/ModuleUtils.h

135 lines
7.5 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 mozilla_GenericModule_h
#define mozilla_GenericModule_h
#include "mozilla/Attributes.h"
#include "mozilla/Module.h"
#define NS_GENERIC_FACTORY_CONSTRUCTOR(_InstanceClass) \
static nsresult \
_InstanceClass##Constructor(nsISupports *aOuter, REFNSIID aIID, \
void **aResult) \
{ \
nsresult rv; \
\
_InstanceClass * inst; \
\
*aResult = nullptr; \
if (nullptr != aOuter) { \
rv = NS_ERROR_NO_AGGREGATION; \
return rv; \
} \
\
inst = new _InstanceClass(); \
if (nullptr == inst) { \
rv = NS_ERROR_OUT_OF_MEMORY; \
return rv; \
} \
NS_ADDREF(inst); \
rv = inst->QueryInterface(aIID, aResult); \
NS_RELEASE(inst); \
\
return rv; \
}
#define NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(_InstanceClass, _InitMethod) \
static nsresult \
_InstanceClass##Constructor(nsISupports *aOuter, REFNSIID aIID, \
void **aResult) \
{ \
nsresult rv; \
\
_InstanceClass * inst; \
\
*aResult = nullptr; \
if (nullptr != aOuter) { \
rv = NS_ERROR_NO_AGGREGATION; \
return rv; \
} \
\
inst = new _InstanceClass(); \
if (nullptr == inst) { \
rv = NS_ERROR_OUT_OF_MEMORY; \
return rv; \
} \
NS_ADDREF(inst); \
rv = inst->_InitMethod(); \
if(NS_SUCCEEDED(rv)) { \
rv = inst->QueryInterface(aIID, aResult); \
} \
NS_RELEASE(inst); \
\
return rv; \
}
// 'Constructor' that uses an existing getter function that gets a singleton.
// NOTE: assumes that getter does an AddRef - so additional AddRef is not done.
#define NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR(_InstanceClass, _GetterProc) \
static nsresult \
_InstanceClass##Constructor(nsISupports *aOuter, REFNSIID aIID, \
void **aResult) \
{ \
nsresult rv; \
\
_InstanceClass * inst; \
\
*aResult = nullptr; \
if (nullptr != aOuter) { \
rv = NS_ERROR_NO_AGGREGATION; \
return rv; \
} \
\
inst = already_AddRefed<_InstanceClass>(_GetterProc()).take(); \
if (nullptr == inst) { \
rv = NS_ERROR_OUT_OF_MEMORY; \
return rv; \
} \
/* NS_ADDREF(inst); */ \
rv = inst->QueryInterface(aIID, aResult); \
NS_RELEASE(inst); \
\
return rv; \
}
#ifndef MOZILLA_INTERNAL_API
#include "nsIModule.h"
#include "nsISupportsUtils.h"
namespace mozilla {
class GenericModule MOZ_FINAL : public nsIModule
{
~GenericModule() {}
public:
explicit GenericModule(const mozilla::Module* aData) : mData(aData) {}
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIMODULE
private:
const mozilla::Module* mData;
};
} // namespace mozilla
#define NS_IMPL_MOZILLA192_NSGETMODULE(module) \
extern "C" NS_EXPORT nsresult \
NSGetModule(nsIComponentManager* aCompMgr, \
nsIFile* aLocation, \
nsIModule** aResult) \
{ \
*aResult = new mozilla::GenericModule(module); \
NS_ADDREF(*aResult); \
return NS_OK; \
}
#endif
#endif // mozilla_GenericModule_h