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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 XPCOM_DS_NSTHASHMAP_H_
#define XPCOM_DS_NSTHASHMAP_H_
#include "mozilla/Attributes.h"
#include "mozilla/RefPtr.h"
#include "mozilla/UniquePtr.h"
#include "nsBaseHashtable.h"
#include "nsCOMPtr.h"
#include "nsHashKeys.h"
#include "nsHashtablesFwd.h"
#include <type_traits>
namespace mozilla::detail {
template <class KeyType>
struct nsKeyClass {
// Prevent instantiation with an incomplete KeyType, as std::is_base_of_v
// would have undefined behaviour then.
static_assert(sizeof(KeyType) > 0,
"KeyType must be a complete type (unless there's an explicit "
"specialization for nsKeyClass<KeyType>)");
static_assert(std::is_base_of_v<PLDHashEntryHdr, KeyType>,
"KeyType must inherit from PLDHashEntryHdr (unless there's an "
"explicit specialization for nsKeyClass<KeyType>)");
using type = std::conditional_t<std::is_base_of_v<PLDHashEntryHdr, KeyType>,
KeyType, void>;
};
template <typename KeyType>
struct nsKeyClass<KeyType*> {
using type = nsPtrHashKey<KeyType>;
};
template <>
struct nsKeyClass<nsCString> {
using type = nsCStringHashKey;
};
// This uses the case-sensitive hash key class, if you want the
// case-insensitive hash key, use nsStringCaseInsensitiveHashKey explicitly.
template <>
struct nsKeyClass<nsString> {
using type = nsStringHashKey;
};
template <>
struct nsKeyClass<uint32_t> {
using type = nsUint32HashKey;
};
template <>
struct nsKeyClass<uint64_t> {
using type = nsUint64HashKey;
};
template <>
struct nsKeyClass<intptr_t> {
using type = IntPtrHashKey;
};
template <>
struct nsKeyClass<nsCOMPtr<nsISupports>> {
using type = nsISupportsHashKey;
};
template <typename T>
struct nsKeyClass<RefPtr<T>> {
using type = nsRefPtrHashKey<T>;
};
template <>
struct nsKeyClass<nsID> {
using type = nsIDHashKey;
};
} // namespace mozilla::detail
// The actual definition of nsTHashMap is in nsHashtablesFwd.h, since it is a
// type alias.
#endif // XPCOM_DS_NSTHASHMAP_H_