trunk/Source/core/css/parser/MediaQueryParser.h - Issue 196653020: Revert 169289 "A thread-safe Media Query Parser"

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Issue 196653020: Revert 169289 "A thread-safe Media Query Parser" (Closed) Base URL: svn://svn.chromium.org/blink/

Patch Set: Created 6 years, 9 months ago

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1 // Copyright 2014 The Chromium Authors. All rights reserved.

2 // Use of this source code is governed by a BSD-style license that can be

3 // found in the LICENSE file.

4

5 #ifndef MediaQueryParser_h

6 #define MediaQueryParser_h

7

8 #include "core/css/CSSParserValues.h"

9 #include "core/css/MediaList.h"

10 #include "core/css/MediaQuery.h"

11 #include "core/css/MediaQueryExp.h"

12 #include "core/css/parser/MediaQueryToken.h"

13 #include "wtf/Vector.h"

14 #include "wtf/text/WTFString.h"

15

16 namespace WebCore {

17

18 class MediaQuerySet;

19

20 class MediaQueryData {

21 private:

22 MediaQuery::Restrictor m_restrictor;

23 String m_mediaType;

24 OwnPtr<ExpressionHeapVector> m_expressions;

25 String m_mediaFeature;

26 CSSParserValueList m_valueList;

27 bool m_mediaTypeSet;

28

29 public:

30 MediaQueryData();

31 void clear();

32 bool addExpression();

33 void addParserValue(MediaQueryTokenType, MediaQueryToken&);

34 void setMediaType(const String&);

35 PassOwnPtr<MediaQuery> takeMediaQuery();

36

37 inline bool currentMediaQueryChanged() const

38 {

39 return (m_restrictor != MediaQuery::None \|\| m_mediaTypeSet \|\| m_expressi ons->size() > 0);

40 }

41

42 inline void setRestrictor(MediaQuery::Restrictor restrictor) { m_restrictor = restrictor; }

43

44 inline void setMediaFeature(const String& str) { m_mediaFeature = str; }

45 };

46

47 class MediaQueryParser {

48 public:

49 static PassRefPtrWillBeRawPtr<MediaQuerySet> parse(const String&);

50

51 private:

52 MediaQueryParser(const String&);

53 virtual ~MediaQueryParser() { };

54

55 PassRefPtrWillBeRawPtr<MediaQuerySet> parseImpl();

56

57 typedef Vector<MediaQueryToken>::iterator TokenIterator;

58

59 void processToken(TokenIterator&);

60

61 void readRestrictor(MediaQueryTokenType, TokenIterator&);

62 void readMediaType(MediaQueryTokenType, TokenIterator&);

63 void readAnd(MediaQueryTokenType, TokenIterator&);

64 void readFeatureStart(MediaQueryTokenType, TokenIterator&);

65 void readFeature(MediaQueryTokenType, TokenIterator&);

66 void readFeatureColon(MediaQueryTokenType, TokenIterator&);

67 void readFeatureValue(MediaQueryTokenType, TokenIterator&);

68 void readFeatureEnd(MediaQueryTokenType, TokenIterator&);

69 void skipUntilComma(MediaQueryTokenType, TokenIterator&);

70 void skipUntilParenthesis(MediaQueryTokenType, TokenIterator&);

71 void done(MediaQueryTokenType, TokenIterator&);

72

73 typedef void (MediaQueryParser::*State)(MediaQueryTokenType, TokenIterator&) ;

74

75 void setStateAndRestrict(State, MediaQuery::Restrictor);

76

77 State m_state;

78 Vector<MediaQueryToken> m_tokens;

79 MediaQueryData m_mediaQueryData;

80 RefPtrWillBeMember<MediaQuerySet> m_querySet;

81

82 const static State ReadRestrictor;

83 const static State ReadMediaType;

84 const static State ReadAnd;

85 const static State ReadFeatureStart;

86 const static State ReadFeature;

87 const static State ReadFeatureColon;

88 const static State ReadFeatureValue;

89 const static State ReadFeatureEnd;

90 const static State SkipUntilComma;

91 const static State SkipUntilParenthesis;

92 const static State Done;

93

94 };

95

96 } // namespace WebCore

97

98 #endif // MediaQueryParser_h

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