1 /* 2 * Copyright (C) 2008 Apple Inc. All Rights Reserved. 3 * Copyright (C) 2010 Google Inc. All Rights Reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 13 * 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 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef CSSPreloadScanner_h 28 #define CSSPreloadScanner_h 29 30 #include "core/html/parser/HTMLResourcePreloader.h" 31 #include "core/html/parser/HTMLToken.h" 32 #include "wtf/text/StringBuilder.h" 33 34 namespace blink { 35 36 class SegmentedString; 37 38 class CSSPreloadScanner { 39 WTF_MAKE_NONCOPYABLE(CSSPreloadScanner); 40 public: 41 CSSPreloadScanner(); 42 ~CSSPreloadScanner(); 43 44 void reset(); 45 46 void scan(const HTMLToken::DataVector&, const SegmentedString&, PreloadRequestStream&); 47 void scan(const String&, const SegmentedString&, PreloadRequestStream&); 48 49 private: 50 enum State { 51 Initial, 52 MaybeComment, 53 Comment, 54 MaybeCommentEnd, 55 RuleStart, 56 Rule, 57 AfterRule, 58 RuleValue, 59 AfterRuleValue, 60 DoneParsingImportRules, 61 }; 62 63 template<typename Char> 64 void scanCommon(const Char* begin, const Char* end, const SegmentedString&, PreloadRequestStream&); 65 66 inline void tokenize(UChar, const SegmentedString&); 67 void emitRule(const SegmentedString&); 68 69 State m_state; 70 StringBuilder m_rule; 71 StringBuilder m_ruleValue; 72 73 // Only non-zero during scan() 74 PreloadRequestStream* m_requests; 75 }; 76 77 } 78 79 #endif 80