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52 lines
1.4 KiB
C++
52 lines
1.4 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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/* Definitions for nsAtom-related hash keys */
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#ifndef nsAtomHashKeys_h
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#define nsAtomHashKeys_h
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#include "nsAtom.h"
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#include "nsHashKeys.h"
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// TODO(emilio): Consider removing this and specializing AddToHash instead
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// once bug 1849386 is fixed.
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// Hash keys suitable for use in nsTHashTable.
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struct nsAtomHashKey : public nsRefPtrHashKey<nsAtom> {
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using nsRefPtrHashKey::nsRefPtrHashKey;
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static PLDHashNumber HashKey(KeyTypePointer aKey) {
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return MOZ_LIKELY(aKey) ? aKey->hash() : 0;
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}
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};
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struct nsWeakAtomHashKey : public nsPtrHashKey<nsAtom> {
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using nsPtrHashKey::nsPtrHashKey;
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static PLDHashNumber HashKey(KeyTypePointer aKey) {
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return nsAtomHashKey::HashKey(aKey);
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}
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};
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// Hash keys suitable for use in mozilla::HashMap.
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namespace mozilla {
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struct AtomHashKey {
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RefPtr<nsAtom> mKey;
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explicit AtomHashKey(nsAtom* aAtom) : mKey(aAtom) {}
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using Lookup = nsAtom*;
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static HashNumber hash(const Lookup& aKey) { return aKey->hash(); }
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static bool match(const AtomHashKey& aFirst, const Lookup& aSecond) {
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return aFirst.mKey == aSecond;
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}
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};
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} // namespace mozilla
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#endif // nsAtomHashKeys_h
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