1 /* ***** BEGIN LICENSE BLOCK *****
2 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 * The contents of this file are subject to the Mozilla Public License Version
5 * 1.1 (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 * http://www.mozilla.org/MPL/
9 * Software distributed under the License is distributed on an "AS IS" basis,
10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11 * for the specific language governing rights and limitations under the
14 * The Original Code is HTML Parser C++ Translator code.
16 * The Initial Developer of the Original Code is
18 * Portions created by the Initial Developer are Copyright (C) 2010
19 * the Initial Developer. All Rights Reserved.
22 * Henri Sivonen <hsivonen@iki.fi>
24 * Alternatively, the contents of this file may be used under the terms of
25 * either the GNU General Public License Version 2 or later (the "GPL"), or
26 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 * in which case the provisions of the GPL or the LGPL are applicable instead
28 * of those above. If you wish to allow use of your version of this file only
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30 * use your version of this file under the terms of the MPL, indicate your
31 * decision by deleting the provisions above and replace them with the notice
32 * and other provisions required by the GPL or the LGPL. If you do not delete
33 * the provisions above, a recipient may use your version of this file under
34 * the terms of any one of the MPL, the GPL or the LGPL.
36 * ***** END LICENSE BLOCK ***** */
38 #ifndef nsHtml5SpeculativeLoad_h_
39 #define nsHtml5SpeculativeLoad_h_
43 class nsHtml5TreeOpExecutor
;
45 enum eHtml5SpeculativeLoad
{
47 eSpeculativeLoadUninitialized
,
50 eSpeculativeLoadImage
,
51 eSpeculativeLoadScript
,
52 eSpeculativeLoadStyle
,
53 eSpeculativeLoadManifest
56 class nsHtml5SpeculativeLoad
{
58 nsHtml5SpeculativeLoad();
59 ~nsHtml5SpeculativeLoad();
61 inline void InitBase(const nsAString
& aUrl
) {
62 NS_PRECONDITION(mOpCode
== eSpeculativeLoadUninitialized
,
63 "Trying to reinitialize a speculative load!");
64 mOpCode
= eSpeculativeLoadBase
;
68 inline void InitImage(const nsAString
& aUrl
) {
69 NS_PRECONDITION(mOpCode
== eSpeculativeLoadUninitialized
,
70 "Trying to reinitialize a speculative load!");
71 mOpCode
= eSpeculativeLoadImage
;
75 inline void InitScript(const nsAString
& aUrl
,
76 const nsAString
& aCharset
,
77 const nsAString
& aType
) {
78 NS_PRECONDITION(mOpCode
== eSpeculativeLoadUninitialized
,
79 "Trying to reinitialize a speculative load!");
80 mOpCode
= eSpeculativeLoadScript
;
82 mCharset
.Assign(aCharset
);
86 inline void InitStyle(const nsAString
& aUrl
, const nsAString
& aCharset
) {
87 NS_PRECONDITION(mOpCode
== eSpeculativeLoadUninitialized
,
88 "Trying to reinitialize a speculative load!");
89 mOpCode
= eSpeculativeLoadStyle
;
91 mCharset
.Assign(aCharset
);
95 * "Speculative" manifest loads aren't truly speculative--if a manifest
96 * gets loaded, we are committed to it. There can never be a <script>
97 * before the manifest, so the situation of having to undo a manifest due
98 * to document.write() never arises. The reason why a parser
99 * thread-discovered manifest gets loaded via the speculative load queue
100 * as opposed to tree operation queue is that the manifest must get
101 * processed before any actually speculative loads such as scripts. Thus,
102 * manifests seen by the parser thread have to maintain the queue order
103 * relative to true speculative loads. See bug 541079.
105 inline void InitManifest(const nsAString
& aUrl
) {
106 NS_PRECONDITION(mOpCode
== eSpeculativeLoadUninitialized
,
107 "Trying to reinitialize a speculative load!");
108 mOpCode
= eSpeculativeLoadManifest
;
112 void Perform(nsHtml5TreeOpExecutor
* aExecutor
);
115 eHtml5SpeculativeLoad mOpCode
;
121 #endif // nsHtml5SpeculativeLoad_h_