OLD | NEW |
(Empty) | |
| 1 /* |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
| 3 * |
| 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions are |
| 6 * met: |
| 7 * |
| 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above |
| 11 * copyright notice, this list of conditions and the following disclaimer |
| 12 * in the documentation and/or other materials provided with the |
| 13 * distribution. |
| 14 * * Neither the name of Google Inc. nor the names of its |
| 15 * contributors may be used to endorse or promote products derived from |
| 16 * this software without specific prior written permission. |
| 17 * |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 */ |
| 30 |
| 31 #ifndef MediaQueryTokenizer_h |
| 32 #define MediaQueryTokenizer_h |
| 33 |
| 34 #include "core/css/parser/CSSToken.h" |
| 35 #include "core/html/parser/InputStreamPreprocessor.h" |
| 36 #include "wtf/text/WTFString.h" |
| 37 |
| 38 #define CODE_POINTS_NUM 128 |
| 39 |
| 40 namespace WebCore { |
| 41 |
| 42 class CSSInputStream; |
| 43 |
| 44 class MediaQueryTokenizer { |
| 45 WTF_MAKE_NONCOPYABLE(MediaQueryTokenizer); |
| 46 WTF_MAKE_FAST_ALLOCATED; |
| 47 public: |
| 48 MediaQueryTokenizer(); |
| 49 |
| 50 CSSToken nextToken(CSSInputStream&); |
| 51 static void tokenize(String, Vector<CSSToken>&); |
| 52 |
| 53 private: |
| 54 UChar consume(); |
| 55 void consume(unsigned); |
| 56 void reconsume(UChar); |
| 57 |
| 58 CSSToken consumeNumericToken(); |
| 59 CSSToken consumeIdentLikeToken(); |
| 60 CSSToken consumeNumber(); |
| 61 |
| 62 void consumeUntilNotWhitespace(); |
| 63 |
| 64 bool consumeIfNext(UChar); |
| 65 String consumeName(); |
| 66 UChar consumeEscape(); |
| 67 |
| 68 bool nextTwoCharsAreValidEscape(); |
| 69 bool nextCharsAreNumber(); |
| 70 bool nextCharsAreIdentifier(); |
| 71 |
| 72 typedef CSSToken (MediaQueryTokenizer::*CodePoint)(UChar); |
| 73 |
| 74 class CodePoints { |
| 75 public: |
| 76 CodePoint codePoints[CODE_POINTS_NUM]; |
| 77 |
| 78 CodePoints() |
| 79 { |
| 80 memset(codePoints, 0, CODE_POINTS_NUM); |
| 81 codePoints['\n'] = &MediaQueryTokenizer::whiteSpace; |
| 82 codePoints['\r'] = &MediaQueryTokenizer::whiteSpace; |
| 83 codePoints['\t'] = &MediaQueryTokenizer::whiteSpace; |
| 84 codePoints[' '] = &MediaQueryTokenizer::whiteSpace; |
| 85 codePoints['\f'] = &MediaQueryTokenizer::whiteSpace; |
| 86 codePoints['('] = &MediaQueryTokenizer::leftParen; |
| 87 codePoints[')'] = &MediaQueryTokenizer::rightParen; |
| 88 codePoints['+'] = &MediaQueryTokenizer::plusOrFullStop; |
| 89 codePoints['.'] = &MediaQueryTokenizer::plusOrFullStop; |
| 90 codePoints[','] = &MediaQueryTokenizer::comma; |
| 91 codePoints['-'] = &MediaQueryTokenizer::hyphenMinus; |
| 92 codePoints['/'] = &MediaQueryTokenizer::solidus; |
| 93 codePoints[':'] = &MediaQueryTokenizer::colon; |
| 94 codePoints[';'] = &MediaQueryTokenizer::semiColon; |
| 95 codePoints['\\'] = &MediaQueryTokenizer::reverseSolidus; |
| 96 for (char digit = '0'; digit <= '9'; ++digit) |
| 97 codePoints[digit] = &MediaQueryTokenizer::asciiDigit; |
| 98 for (char alpha = 'a'; alpha <= 'z'; ++alpha) |
| 99 codePoints[alpha] = &MediaQueryTokenizer::nameStart; |
| 100 for (char alpha = 'A'; alpha <= 'Z'; ++alpha) |
| 101 codePoints[alpha] = &MediaQueryTokenizer::nameStart; |
| 102 codePoints['_'] = &MediaQueryTokenizer::nameStart; |
| 103 codePoints[kEndOfFileMarker] = &MediaQueryTokenizer::endOfFile; |
| 104 } |
| 105 }; |
| 106 |
| 107 CodePoints* getCodePoints() |
| 108 { |
| 109 static CodePoints codePoints; |
| 110 return &codePoints; |
| 111 } |
| 112 |
| 113 CSSToken whiteSpace(UChar); |
| 114 CSSToken leftParen(UChar); |
| 115 CSSToken rightParen(UChar); |
| 116 CSSToken plusOrFullStop(UChar); |
| 117 CSSToken comma(UChar); |
| 118 CSSToken hyphenMinus(UChar); |
| 119 CSSToken solidus(UChar); |
| 120 CSSToken colon(UChar); |
| 121 CSSToken semiColon(UChar); |
| 122 CSSToken reverseSolidus(UChar); |
| 123 CSSToken asciiDigit(UChar); |
| 124 CSSToken nameStart(UChar); |
| 125 CSSToken endOfFile(UChar); |
| 126 |
| 127 CSSInputStream* m_input; |
| 128 }; |
| 129 |
| 130 |
| 131 |
| 132 } // namespace WebCore |
| 133 |
| 134 #endif // MediaQueryTokenizer_h |
OLD | NEW |