michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef nsStaticAtom_h__
michael@0: #define nsStaticAtom_h__
michael@0: 
michael@0: #include "nsIAtom.h"
michael@0: #include "nsStringBuffer.h"
michael@0: #include "prlog.h"
michael@0: 
michael@0: typedef char16_t nsStaticAtomStringType;
michael@0: 
michael@0: #define NS_STATIC_ATOM(buffer_name, atom_ptr)  { (nsStringBuffer*) &buffer_name, atom_ptr }
michael@0: #define NS_STATIC_ATOM_BUFFER(buffer_name, str_data) static nsFakeStringBuffer< sizeof(str_data) > buffer_name = { 1, sizeof(str_data) * sizeof(nsStaticAtomStringType), MOZ_UTF16(str_data) };
michael@0: 
michael@0: /**
michael@0:  * Holds data used to initialize large number of atoms during startup. Use
michael@0:  * the above macros to initialize these structs. They should never be accessed
michael@0:  * directly other than from AtomTable.cpp
michael@0:  */
michael@0: struct nsStaticAtom {
michael@0:     nsStringBuffer* mStringBuffer;
michael@0:     nsIAtom ** mAtom;
michael@0: };
michael@0: 
michael@0: /**
michael@0:  * This is a struct with the same binary layout as a nsStringBuffer.
michael@0:  */
michael@0: template <uint32_t size>
michael@0: struct nsFakeStringBuffer {
michael@0:     int32_t mRefCnt;
michael@0:     uint32_t mSize;
michael@0:     nsStaticAtomStringType mStringData[size];
michael@0: };
michael@0: 
michael@0: // Register an array of static atoms with the atom table
michael@0: template<uint32_t N>
michael@0: nsresult
michael@0: NS_RegisterStaticAtoms(const nsStaticAtom (&atoms)[N])
michael@0: {
michael@0:     extern nsresult RegisterStaticAtoms(const nsStaticAtom*, uint32_t aAtomCount);
michael@0:     return RegisterStaticAtoms(atoms, N);
michael@0: }
michael@0: 
michael@0: #endif