56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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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/*
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* The nsILanguageAtomService provides a mapping from languages or charsets
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* to language groups, and access to the system locale language.
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*/
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#ifndef nsLanguageAtomService_h_
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#define nsLanguageAtomService_h_
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#include "mozilla/NotNull.h"
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#include "mozilla/RefPtr.h"
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#include "mozilla/RWLock.h"
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#include "mozilla/StaticPtr.h"
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#include "nsAtomHashKeys.h"
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#include "nsTHashMap.h"
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namespace mozilla {
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class Encoding;
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}
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class nsLanguageAtomService final {
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using Encoding = mozilla::Encoding;
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template <typename T>
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using NotNull = mozilla::NotNull<T>;
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public:
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static nsLanguageAtomService* GetService();
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static void Shutdown();
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nsStaticAtom* LookupLanguage(const nsACString& aLanguage);
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already_AddRefed<nsAtom> LookupCharSet(NotNull<const Encoding*> aCharSet);
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nsAtom* GetLocaleLanguage();
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// Returns the language group that the specified language is a part of,
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// using a cache to avoid repeatedly doing full lookups.
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nsStaticAtom* GetLanguageGroup(nsAtom* aLanguage);
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private:
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// The core implementation of lang-tag to language-group lookup. (Now used
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// only internally by GetLanguageGroup.)
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nsStaticAtom* GetUncachedLanguageGroup(nsAtom* aLanguage) const;
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static mozilla::StaticAutoPtr<nsLanguageAtomService> sLangAtomService;
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nsTHashMap<RefPtr<nsAtom>, nsStaticAtom*> mLangToGroup MOZ_GUARDED_BY(mLock);
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RefPtr<nsAtom> mLocaleLanguage MOZ_GUARDED_BY(mLock);
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mozilla::RWLock mLock{"LanguageAtomService"};
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};
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#endif
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