2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 * Copyright (C) 2010 Google Inc. All Rights Reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #ifndef HTMLPreloadScanner_h
28 #define HTMLPreloadScanner_h
30 #include "CSSPreloadScanner.h"
31 #include "HTMLTokenizer.h"
32 #include "SegmentedString.h"
36 class TokenPreloadScanner {
37 WTF_MAKE_NONCOPYABLE(TokenPreloadScanner);
39 explicit TokenPreloadScanner(const URL& documentURL, float deviceScaleFactor = 1.0);
41 void scan(const HTMLToken&, PreloadRequestStream&, Document&);
43 void setPredictedBaseElementURL(const URL& url) { m_predictedBaseElementURL = url; }
47 // These tags are scanned by the StartTagScanner.
54 // These tags are not scanned by the StartTagScanner.
61 class StartTagScanner;
63 static TagId tagIdFor(const HTMLToken::DataVector&);
65 static String initiatorFor(TagId);
67 void updatePredictedBaseURL(const HTMLToken&);
69 CSSPreloadScanner m_cssScanner;
70 const URL m_documentURL;
71 const float m_deviceScaleFactor { 1 };
73 URL m_predictedBaseElementURL;
74 bool m_inStyle { false };
75 #if ENABLE(TEMPLATE_ELEMENT)
76 unsigned m_templateCount { 0 };
80 class HTMLPreloadScanner {
81 WTF_MAKE_FAST_ALLOCATED;
83 HTMLPreloadScanner(const HTMLParserOptions&, const URL& documentURL, float deviceScaleFactor = 1.0);
85 void appendToEnd(const SegmentedString&);
86 void scan(HTMLResourcePreloader&, Document&);
89 TokenPreloadScanner m_scanner;
90 SegmentedString m_source;
91 HTMLTokenizer m_tokenizer;
94 WEBCORE_EXPORT bool testPreloadScannerViewportSupport(Document*);