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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 nsStaticAtom_h__
#define nsStaticAtom_h__
#include "nsIAtom.h"
#include "nsStringBuffer.h"
#define NS_STATIC_ATOM(buffer_name, atom_ptr) \
{ (nsStringBuffer*) &buffer_name, atom_ptr }
#define NS_STATIC_ATOM_BUFFER(buffer_name, str_data) \
static nsFakeStringBuffer<sizeof(str_data)> buffer_name = \
{ 1, sizeof(str_data) * sizeof(char16_t), (u"" str_data) };
/**
* Holds data used to initialize large number of atoms during startup. Use
* the above macros to initialize these structs. They should never be accessed
* directly other than from AtomTable.cpp
*/
struct nsStaticAtom
{
// mStringBuffer points to the string buffer for a permanent atom, and is
// therefore safe as a non-owning reference.
nsStringBuffer* MOZ_NON_OWNING_REF mStringBuffer;
nsIAtom** mAtom;
};
/**
* This is a struct with the same binary layout as a nsStringBuffer.
*/
template<uint32_t size>
struct nsFakeStringBuffer
{
int32_t mRefCnt;
uint32_t mSize;
char16_t mStringData[size];
};
// Register an array of static atoms with the atom table
template<uint32_t N>
void
NS_RegisterStaticAtoms(const nsStaticAtom (&aAtoms)[N])
{
extern void RegisterStaticAtoms(const nsStaticAtom*, uint32_t aAtomCount);
RegisterStaticAtoms(aAtoms, N);
}
#endif
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