1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /* ***** BEGIN LICENSE BLOCK *****
3 : * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 : *
5 : * The contents of this file are subject to the Mozilla Public License Version
6 : * 1.1 (the "License"); you may not use this file except in compliance with
7 : * the License. You may obtain a copy of the License at
8 : * http://www.mozilla.org/MPL/
9 : *
10 : * Software distributed under the License is distributed on an "AS IS" basis,
11 : * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 : * for the specific language governing rights and limitations under the
13 : * License.
14 : *
15 : * The Original Code is Static Atom classes.
16 : *
17 : * The Initial Developer of the Original Code is
18 : * Netscape Communications Corp.
19 : * Portions created by the Initial Developer are Copyright (C) 2003
20 : * the Initial Developer. All Rights Reserved.
21 : *
22 : * Contributor(s):
23 : * Alec Flett <alecf@netscape.com>
24 : *
25 : * Alternatively, the contents of this file may be used under the terms of
26 : * either the GNU General Public License Version 2 or later (the "GPL"), or
27 : * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
28 : * in which case the provisions of the GPL or the LGPL are applicable instead
29 : * of those above. If you wish to allow use of your version of this file only
30 : * under the terms of either the GPL or the LGPL, and not to allow others to
31 : * use your version of this file under the terms of the MPL, indicate your
32 : * decision by deleting the provisions above and replace them with the notice
33 : * and other provisions required by the GPL or the LGPL. If you do not delete
34 : * the provisions above, a recipient may use your version of this file under
35 : * the terms of any one of the MPL, the GPL or the LGPL.
36 : *
37 : * ***** END LICENSE BLOCK ***** */
38 :
39 : #ifndef nsStaticAtom_h__
40 : #define nsStaticAtom_h__
41 :
42 : #include "nsIAtom.h"
43 : #include "nsStringBuffer.h"
44 : #include "prlog.h"
45 :
46 : #if defined(HAVE_CPP_CHAR16_T)
47 : #define NS_STATIC_ATOM_USE_WIDE_STRINGS
48 : typedef char16_t nsStaticAtomStringType;
49 : #elif defined(HAVE_CPP_2BYTE_WCHAR_T)
50 : #define NS_STATIC_ATOM_USE_WIDE_STRINGS
51 : typedef wchar_t nsStaticAtomStringType;
52 : #else
53 : typedef char nsStaticAtomStringType;
54 : #endif
55 :
56 : #define NS_STATIC_ATOM(buffer_name, atom_ptr) { (nsStringBuffer*) &buffer_name, atom_ptr }
57 : #define NS_STATIC_ATOM_BUFFER(buffer_name, str_data) static nsFakeStringBuffer< sizeof(str_data) > buffer_name = { 1, sizeof(str_data) * sizeof(nsStaticAtomStringType), NS_L(str_data) };
58 :
59 : /**
60 : * Holds data used to initialize large number of atoms during startup. Use
61 : * the above macros to initialize these structs. They should never be accessed
62 : * directly other than from AtomTable.cpp
63 : */
64 : struct nsStaticAtom {
65 : nsStringBuffer* mStringBuffer;
66 : nsIAtom ** mAtom;
67 : };
68 :
69 : /**
70 : * This is a struct with the same binary layout as a nsStringBuffer.
71 : */
72 : template <PRUint32 size>
73 : struct nsFakeStringBuffer {
74 : PRInt32 mRefCnt;
75 : PRUint32 mSize;
76 : nsStaticAtomStringType mStringData[size];
77 : };
78 :
79 : // Register an array of static atoms with the atom table
80 : template<PRUint32 N>
81 : nsresult
82 13452 : NS_RegisterStaticAtoms(const nsStaticAtom (&atoms)[N])
83 : {
84 : extern nsresult RegisterStaticAtoms(const nsStaticAtom*, PRUint32 aAtomCount);
85 13452 : return RegisterStaticAtoms(atoms, N);
86 : }
87 :
88 : #endif
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