зеркало из https://github.com/mozilla/gecko-dev.git
95 строки
3.1 KiB
C++
95 строки
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 XPCOM_DS_NSHASHTABLESFWD_H_
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#define XPCOM_DS_NSHASHTABLESFWD_H_
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#include "mozilla/Attributes.h"
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struct PLDHashEntryHdr;
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template <class T>
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class MOZ_IS_REFPTR nsCOMPtr;
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template <class T>
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class MOZ_IS_REFPTR RefPtr;
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template <class EntryType>
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class MOZ_NEEDS_NO_VTABLE_TYPE nsTHashtable;
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template <class DataType, class UserDataType>
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class nsDefaultConverter;
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template <class KeyClass, class DataType, class UserDataType,
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class Converter = nsDefaultConverter<DataType, UserDataType>>
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class nsBaseHashtable;
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template <class KeyClass, class T>
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class nsClassHashtable;
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template <class KeyClass, class PtrType>
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class nsRefCountedHashtable;
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/**
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* templated hashtable class maps keys to interface pointers.
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* See nsBaseHashtable for complete declaration.
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* @deprecated This is going to be removed. Use nsTHashMap instead.
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* @param KeyClass a wrapper-class for the hashtable key, see nsHashKeys.h
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* for a complete specification.
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* @param Interface the interface-type being wrapped
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* @see nsClassHashtable, nsTHashMap
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*/
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template <class KeyClass, class Interface>
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using nsInterfaceHashtable =
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nsRefCountedHashtable<KeyClass, nsCOMPtr<Interface>>;
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/**
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* templated hashtable class maps keys to reference pointers.
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* See nsBaseHashtable for complete declaration.
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* @deprecated This is going to be removed. Use nsTHashMap instead.
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* @param KeyClass a wrapper-class for the hashtable key, see nsHashKeys.h
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* for a complete specification.
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* @param PtrType the reference-type being wrapped
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* @see nsClassHashtable, nsTHashMap
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*/
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template <class KeyClass, class ClassType>
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using nsRefPtrHashtable = nsRefCountedHashtable<KeyClass, RefPtr<ClassType>>;
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namespace mozilla::detail {
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template <class KeyType, class = void>
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struct nsKeyClass;
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} // namespace mozilla::detail
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/**
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* A universal hash map that maps some KeyType to some DataType. It can be used
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* for any DataType, including RefPtr<T>, nsCOMPtr<T> and UniquePtr<T>.
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*
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* For the default hash keys types, the appropriate hash key class is determined
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* automatically, so you can just specify `nsTHashMap<uint32_t,
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* RefPtr<Foo>>`, for example.
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*
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* If you require custom hash behaviour (e.g. case insensitive string handling),
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* you can still specify a hash key class derived from PLDHashEntryHdr
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* explicitly.
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*
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* If you need to use a custom UserDataType, use nsBaseHashtable (or
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* nsTHashtable) directly. However, you should double-check if that's really
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* necessary.
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*/
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template <class KeyType, class DataType>
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using nsTHashMap =
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nsBaseHashtable<typename mozilla::detail::nsKeyClass<KeyType>::type,
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DataType, DataType>;
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template <class KeyClass>
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class nsTBaseHashSet;
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template <class KeyType>
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using nsTHashSet =
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nsTBaseHashSet<typename mozilla::detail::nsKeyClass<KeyType>::type>;
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#endif // XPCOM_DS_NSHASHTABLESFWD_H_
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