gecko-dev/parser/html/nsHtml5AtomTable.cpp

33 строки
952 B
C++

/* 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/. */
#include "nsHtml5AtomTable.h"
#include "nsThreadUtils.h"
nsHtml5AtomTable::nsHtml5AtomTable() : mRecentlyUsedParserAtoms{} {
#ifdef DEBUG
mPermittedLookupEventTarget = mozilla::GetCurrentThreadSerialEventTarget();
#endif
}
nsHtml5AtomTable::~nsHtml5AtomTable() {}
nsAtom* nsHtml5AtomTable::GetAtom(const nsAString& aKey) {
#ifdef DEBUG
MOZ_ASSERT(mPermittedLookupEventTarget->IsOnCurrentThread());
#endif
uint32_t index = mozilla::HashString(aKey) % RECENTLY_USED_PARSER_ATOMS_SIZE;
if (nsAtom* atom = mRecentlyUsedParserAtoms[index]) {
if (atom->Equals(aKey)) {
return atom;
}
}
RefPtr<nsAtom> atom = NS_Atomize(aKey);
nsAtom* ret = atom.get();
mRecentlyUsedParserAtoms[index] = atom.forget();
return ret;
}