forked from mozilla/gecko-dev
-
Notifications
You must be signed in to change notification settings - Fork 2
/
nsDOMClassInfoID.h
186 lines (153 loc) · 7.61 KB
/
nsDOMClassInfoID.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Johnny Stenback <jst@netscape.com> (original author)
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/**
* This file defines enum values for all of the DOM objects which have
* an entry in nsDOMClassInfo.
*/
#ifndef nsDOMClassInfoID_h__
#define nsDOMClassInfoID_h__
#define DOMCI_CLASS(_dom_class) \
eDOMClassInfo_##_dom_class##_id,
enum nsDOMClassInfoID {
#include "nsDOMClassInfoClasses.h"
// This one better be the last one in this list
eDOMClassInfoIDCount
};
#undef DOMCI_CLASS
/**
* nsIClassInfo helper macros
*/
/**
* DOMCI_CASTABLE_INTERFACES contains the list of interfaces that we have a bit
* for in nsDOMClassInfo's mInterfacesBitmap. To use it you need to define
* DOMCI_CASTABLE_INTERFACE(interface, bit, extra) and then call
* DOMCI_CASTABLE_INTERFACES(extra). For every interface there will be one
* call to DOMCI_CASTABLE_INTERFACE with the bit that it corresponds to and
* the extra argument that was passed in to DOMCI_CASTABLE_INTERFACES.
*
* WARNING: Be very careful when adding interfaces to this list. Every object
* that implements one of these interfaces must be directly castable
* to that interface from the *canonical* nsISupports!
*/
#undef DOMCI_CASTABLE_INTERFACE
#define DOMCI_CASTABLE_INTERFACES(_extra) \
DOMCI_CASTABLE_INTERFACE(nsINode, nsINode, 0, _extra) \
DOMCI_CASTABLE_INTERFACE(nsIContent, nsIContent, 1, _extra) \
DOMCI_CASTABLE_INTERFACE(nsIDocument, nsIDocument, 2, _extra) \
DOMCI_CASTABLE_INTERFACE(nsINodeList, nsINodeList, 3, _extra) \
DOMCI_CASTABLE_INTERFACE(nsICSSDeclaration, nsICSSDeclaration, 4, _extra) \
DOMCI_CASTABLE_INTERFACE(nsGenericTextNode, nsGenericTextNode, 5, _extra) \
DOMCI_CASTABLE_INTERFACE(nsDocument, nsIDocument, 6, _extra) \
DOMCI_CASTABLE_INTERFACE(nsGenericHTMLElement, nsGenericHTMLElement, 7, \
_extra) \
DOMCI_CASTABLE_INTERFACE(nsHTMLDocument, nsIDocument, 8, _extra) \
DOMCI_CASTABLE_INTERFACE(nsStyledElement, nsStyledElement, 9, _extra) \
DOMCI_CASTABLE_INTERFACE(nsSVGStylableElement, nsIContent, 10, _extra)
// Make sure all classes mentioned in DOMCI_CASTABLE_INTERFACES
// have been declared.
#define DOMCI_CASTABLE_INTERFACE(_interface, _u1, _u2, _u3) class _interface;
DOMCI_CASTABLE_INTERFACES(unused)
#undef DOMCI_CASTABLE_INTERFACE
#ifdef _IMPL_NS_LAYOUT
#define DOMCI_CLASS(_dom_class) \
extern const PRUint32 kDOMClassInfo_##_dom_class##_interfaces;
#include "nsDOMClassInfoClasses.h"
#undef DOMCI_CLASS
/**
* Provide a general "does class C implement interface I" predicate.
* This is not as sophisticated as e.g. boost's is_base_of template,
* but it does the job adequately for our purposes.
*/
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 2) || \
_MSC_FULL_VER >= 140050215
/* Use a compiler intrinsic if one is available. */
#define DOMCI_CASTABLE_TO(_interface, _class) __is_base_of(_interface, _class)
#else
/* The generic version of this predicate relies on the overload resolution
* rules. If |_class| inherits from |_interface|, the |_interface*|
* overload of DOMCI_CastableTo<_interface>::p() will be chosen, otherwise
* the |void*| overload will be chosen. There is no definition of these
* functions; we determine which overload was selected by inspecting the
* size of the return type.
*/
template <typename Interface> struct DOMCI_CastableTo {
struct false_type { int x[1]; };
struct true_type { int x[2]; };
static false_type p(void*);
static true_type p(Interface*);
};
#define DOMCI_CASTABLE_TO(_interface, _class) \
(sizeof(DOMCI_CastableTo<_interface>::p(static_cast<_class*>(0))) == \
sizeof(DOMCI_CastableTo<_interface>::true_type))
#endif
/**
* Here we calculate the bitmap for a given class.
*/
#define DOMCI_CASTABLE_INTERFACE(_interface, _base, _bit, _class) \
(DOMCI_CASTABLE_TO(_interface, _class) ? 1 << _bit : 0) +
#define DOMCI_DATA(_dom_class, _class) \
const PRUint32 kDOMClassInfo_##_dom_class##_interfaces = \
DOMCI_CASTABLE_INTERFACES(_class) \
0;
class nsIClassInfo;
class nsXPCClassInfo;
extern nsIClassInfo*
NS_GetDOMClassInfoInstance(nsDOMClassInfoID aID);
#define NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(_class) \
if (aIID.Equals(NS_GET_IID(nsIClassInfo)) || \
aIID.Equals(NS_GET_IID(nsXPCClassInfo))) { \
foundInterface = NS_GetDOMClassInfoInstance(eDOMClassInfo_##_class##_id); \
if (!foundInterface) { \
*aInstancePtr = nsnull; \
return NS_ERROR_OUT_OF_MEMORY; \
} \
} else
#define NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO_CONDITIONAL(_class, condition) \
if ((condition) && \
(aIID.Equals(NS_GET_IID(nsIClassInfo)) || \
aIID.Equals(NS_GET_IID(nsXPCClassInfo)))) { \
foundInterface = NS_GetDOMClassInfoInstance(eDOMClassInfo_##_class##_id); \
if (!foundInterface) { \
*aInstancePtr = nsnull; \
return NS_ERROR_OUT_OF_MEMORY; \
} \
} else
#else
// See nsIDOMClassInfo.h
#endif // _IMPL_NS_LAYOUT
#endif // nsDOMClassInfoID_h__