38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
/* 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_services_AppServicesLoggerComponents_h_
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#define mozilla_services_AppServicesLoggerComponents_h_
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#include "mozIAppServicesLogger.h"
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#include "nsCOMPtr.h"
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extern "C" {
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// Implemented in Rust, in the `app_services_logger` crate.
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nsresult NS_NewAppServicesLogger(mozIAppServicesLogger** aResult);
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} // extern "C"
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namespace mozilla {
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namespace appservices {
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// The C++ constructor for a `services.appServicesLogger` service. This wrapper
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// exists because `components.conf` requires a component class constructor to
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// return an `already_AddRefed<T>`, but Rust doesn't have such a type. So we
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// call the Rust constructor using a `nsCOMPtr` (which is compatible with Rust's
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// `xpcom::RefPtr`) out param, and return that.
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already_AddRefed<mozIAppServicesLogger> NewLogService() {
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nsCOMPtr<mozIAppServicesLogger> logger;
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nsresult rv = NS_NewAppServicesLogger(getter_AddRefs(logger));
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return nullptr;
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}
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return logger.forget();
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}
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} // namespace appservices
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} // namespace mozilla
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#endif // mozilla_services_AppServicesLoggerComponents_h_
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