michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_GenericModule_h
michael@0: #define mozilla_GenericModule_h
michael@0: 
michael@0: #include "mozilla/Attributes.h"
michael@0: #include "mozilla/Module.h"
michael@0: 
michael@0: #define NS_GENERIC_FACTORY_CONSTRUCTOR(_InstanceClass)                        \
michael@0: static nsresult                                                               \
michael@0: _InstanceClass##Constructor(nsISupports *aOuter, REFNSIID aIID,               \
michael@0:                             void **aResult)                                   \
michael@0: {                                                                             \
michael@0:     nsresult rv;                                                              \
michael@0:                                                                               \
michael@0:     _InstanceClass * inst;                                                    \
michael@0:                                                                               \
michael@0:     *aResult = nullptr;                                                       \
michael@0:     if (nullptr != aOuter) {                                                  \
michael@0:         rv = NS_ERROR_NO_AGGREGATION;                                         \
michael@0:         return rv;                                                            \
michael@0:     }                                                                         \
michael@0:                                                                               \
michael@0:     inst = new _InstanceClass();                                              \
michael@0:     if (nullptr == inst) {                                                    \
michael@0:         rv = NS_ERROR_OUT_OF_MEMORY;                                          \
michael@0:         return rv;                                                            \
michael@0:     }                                                                         \
michael@0:     NS_ADDREF(inst);                                                          \
michael@0:     rv = inst->QueryInterface(aIID, aResult);                                 \
michael@0:     NS_RELEASE(inst);                                                         \
michael@0:                                                                               \
michael@0:     return rv;                                                                \
michael@0: }
michael@0: 
michael@0: #define NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(_InstanceClass, _InitMethod)      \
michael@0: static nsresult                                                               \
michael@0: _InstanceClass##Constructor(nsISupports *aOuter, REFNSIID aIID,               \
michael@0:                             void **aResult)                                   \
michael@0: {                                                                             \
michael@0:     nsresult rv;                                                              \
michael@0:                                                                               \
michael@0:     _InstanceClass * inst;                                                    \
michael@0:                                                                               \
michael@0:     *aResult = nullptr;                                                       \
michael@0:     if (nullptr != aOuter) {                                                  \
michael@0:         rv = NS_ERROR_NO_AGGREGATION;                                         \
michael@0:         return rv;                                                            \
michael@0:     }                                                                         \
michael@0:                                                                               \
michael@0:     inst = new _InstanceClass();                                              \
michael@0:     if (nullptr == inst) {                                                    \
michael@0:         rv = NS_ERROR_OUT_OF_MEMORY;                                          \
michael@0:         return rv;                                                            \
michael@0:     }                                                                         \
michael@0:     NS_ADDREF(inst);                                                          \
michael@0:     rv = inst->_InitMethod();                                                 \
michael@0:     if(NS_SUCCEEDED(rv)) {                                                    \
michael@0:         rv = inst->QueryInterface(aIID, aResult);                             \
michael@0:     }                                                                         \
michael@0:     NS_RELEASE(inst);                                                         \
michael@0:                                                                               \
michael@0:     return rv;                                                                \
michael@0: }
michael@0: 
michael@0: // 'Constructor' that uses an existing getter function that gets a singleton.
michael@0: // NOTE: assumes that getter does an AddRef - so additional AddRef is not done.
michael@0: #define NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR(_InstanceClass, _GetterProc) \
michael@0: static nsresult                                                               \
michael@0: _InstanceClass##Constructor(nsISupports *aOuter, REFNSIID aIID,               \
michael@0:                             void **aResult)                                   \
michael@0: {                                                                             \
michael@0:     nsresult rv;                                                              \
michael@0:                                                                               \
michael@0:     _InstanceClass * inst;                                                    \
michael@0:                                                                               \
michael@0:     *aResult = nullptr;                                                       \
michael@0:     if (nullptr != aOuter) {                                                  \
michael@0:         rv = NS_ERROR_NO_AGGREGATION;                                         \
michael@0:         return rv;                                                            \
michael@0:     }                                                                         \
michael@0:                                                                               \
michael@0:     inst = already_AddRefed<_InstanceClass>(_GetterProc()).take();   \
michael@0:     if (nullptr == inst) {                                                    \
michael@0:         rv = NS_ERROR_OUT_OF_MEMORY;                                          \
michael@0:         return rv;                                                            \
michael@0:     }                                                                         \
michael@0:     /* NS_ADDREF(inst); */                                                    \
michael@0:     rv = inst->QueryInterface(aIID, aResult);                                 \
michael@0:     NS_RELEASE(inst);                                                         \
michael@0:                                                                               \
michael@0:     return rv;                                                                \
michael@0: }
michael@0: 
michael@0: #ifndef MOZILLA_INTERNAL_API
michael@0: 
michael@0: #include "nsIModule.h"
michael@0: #include "nsISupportsUtils.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: class GenericModule MOZ_FINAL : public nsIModule
michael@0: {
michael@0: public:
michael@0:     GenericModule(const mozilla::Module* aData)
michael@0:         : mData(aData)
michael@0:     {
michael@0:     }
michael@0: 
michael@0:     NS_DECL_THREADSAFE_ISUPPORTS
michael@0:     NS_DECL_NSIMODULE
michael@0: 
michael@0: private:
michael@0:     const mozilla::Module* mData;
michael@0: };
michael@0: 
michael@0: } // namespace mozilla
michael@0: 
michael@0: #define NS_IMPL_MOZILLA192_NSGETMODULE(module)     \
michael@0: extern "C" NS_EXPORT nsresult                      \
michael@0: NSGetModule(nsIComponentManager* aCompMgr,         \
michael@0:             nsIFile* aLocation,                    \
michael@0:             nsIModule** aResult)                   \
michael@0: {                                                  \
michael@0:     *aResult = new mozilla::GenericModule(module); \
michael@0:     NS_ADDREF(*aResult);                           \
michael@0:     return NS_OK;                                  \
michael@0: }
michael@0: 
michael@0: #endif
michael@0: 
michael@0: #endif // mozilla_GenericModule_h