/* * Copyright (C) 2008 Apple Inc. All Rights Reserved. * Copyright (C) 2010 Google Inc. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef HTMLPreloadScanner_h #define HTMLPreloadScanner_h #include "CSSPreloadScanner.h" #include "HTMLTokenizer.h" #include "SegmentedString.h" namespace WebCore { class TokenPreloadScanner { WTF_MAKE_NONCOPYABLE(TokenPreloadScanner); public: explicit TokenPreloadScanner(const URL& documentURL, float deviceScaleFactor = 1.0); void scan(const HTMLToken&, PreloadRequestStream&, Document&); void setPredictedBaseElementURL(const URL& url) { m_predictedBaseElementURL = url; } private: enum class TagId { // These tags are scanned by the StartTagScanner. Img, Input, Link, Script, Meta, // These tags are not scanned by the StartTagScanner. Unknown, Style, Base, Template, }; class StartTagScanner; static TagId tagIdFor(const HTMLToken::DataVector&); static String initiatorFor(TagId); void updatePredictedBaseURL(const HTMLToken&); CSSPreloadScanner m_cssScanner; const URL m_documentURL; const float m_deviceScaleFactor { 1 }; URL m_predictedBaseElementURL; bool m_inStyle { false }; #if ENABLE(TEMPLATE_ELEMENT) unsigned m_templateCount { 0 }; #endif }; class HTMLPreloadScanner { WTF_MAKE_FAST_ALLOCATED; public: HTMLPreloadScanner(const HTMLParserOptions&, const URL& documentURL, float deviceScaleFactor = 1.0); void appendToEnd(const SegmentedString&); void scan(HTMLResourcePreloader&, Document&); private: TokenPreloadScanner m_scanner; SegmentedString m_source; HTMLTokenizer m_tokenizer; }; WEBCORE_EXPORT bool testPreloadScannerViewportSupport(Document*); } #endif