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/*
* Copyright (C) 2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2008 Eric Seidel <eric@webkit.org>
* Copyright (C) 2009 - 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef CSSParser_h
#define CSSParser_h
#include "Color.h"
#include "CSSParserValues.h"
#include "CSSSelectorList.h"
#include "MediaQuery.h"
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/Vector.h>
#include <wtf/text/AtomicString.h>
namespace WebCore {
class CSSMutableStyleDeclaration;
class CSSPrimitiveValue;
class CSSProperty;
class CSSRule;
class CSSRuleList;
class CSSSelector;
class CSSStyleRule;
class CSSStyleSheet;
class CSSValue;
class CSSValueList;
class CSSVariablesDeclaration;
class Document;
class MediaList;
class MediaQueryExp;
class StyleBase;
class StyleList;
class WebKitCSSKeyframeRule;
class WebKitCSSKeyframesRule;
class CSSParser {
public:
typedef HashMap<CSSStyleRule*, std::pair<unsigned, unsigned> > StyleRuleRanges;
CSSParser(bool strictParsing = true);
~CSSParser();
void parseSheet(CSSStyleSheet*, const String&, int startLineNumber = 0, StyleRuleRanges* ruleRangeMap = 0);
PassRefPtr<CSSRule> parseRule(CSSStyleSheet*, const String&);
PassRefPtr<CSSRule> parseKeyframeRule(CSSStyleSheet*, const String&);
bool parseValue(CSSMutableStyleDeclaration*, int propId, const String&, bool important);
static bool parseColor(RGBA32& color, const String&, bool strict = false);
bool parseColor(CSSMutableStyleDeclaration*, const String&);
bool parseDeclaration(CSSMutableStyleDeclaration*, const String&);
bool parseMediaQuery(MediaList*, const String&);
Document* document() const;
void addProperty(int propId, PassRefPtr<CSSValue>, bool important);
void rollbackLastProperties(int num);
bool hasProperties() const { return m_numParsedProperties > 0; }
bool parseValue(int propId, bool important);
bool parseShorthand(int propId, const int* properties, int numProperties, bool important);
bool parse4Values(int propId, const int* properties, bool important);
bool parseContent(int propId, bool important);
PassRefPtr<CSSValue> parseAttr(CSSParserValueList* args);
PassRefPtr<CSSValue> parseBackgroundColor();
bool parseFillImage(RefPtr<CSSValue>&);
PassRefPtr<CSSValue> parseFillPositionXY(bool& xFound, bool& yFound);
void parseFillPosition(RefPtr<CSSValue>&, RefPtr<CSSValue>&);
void parseFillRepeat(RefPtr<CSSValue>&, RefPtr<CSSValue>&);
PassRefPtr<CSSValue> parseFillSize(int propId, bool &allowComma);
bool parseFillProperty(int propId, int& propId1, int& propId2, RefPtr<CSSValue>&, RefPtr<CSSValue>&);
bool parseFillShorthand(int propId, const int* properties, int numProperties, bool important);
void addFillValue(RefPtr<CSSValue>& lval, PassRefPtr<CSSValue> rval);
void addAnimationValue(RefPtr<CSSValue>& lval, PassRefPtr<CSSValue> rval);
PassRefPtr<CSSValue> parseAnimationDelay();
PassRefPtr<CSSValue> parseAnimationDirection();
PassRefPtr<CSSValue> parseAnimationDuration();
PassRefPtr<CSSValue> parseAnimationFillMode();
PassRefPtr<CSSValue> parseAnimationIterationCount();
PassRefPtr<CSSValue> parseAnimationName();
PassRefPtr<CSSValue> parseAnimationPlayState();
PassRefPtr<CSSValue> parseAnimationProperty();
PassRefPtr<CSSValue> parseAnimationTimingFunction();
void parseTransformOriginShorthand(RefPtr<CSSValue>&, RefPtr<CSSValue>&, RefPtr<CSSValue>&);
bool parseTimingFunctionValue(CSSParserValueList*& args, double& result);
bool parseAnimationProperty(int propId, RefPtr<CSSValue>&);
bool parseTransitionShorthand(bool important);
bool parseAnimationShorthand(bool important);
bool parseDashboardRegions(int propId, bool important);
bool parseShape(int propId, bool important);
bool parseFont(bool important);
PassRefPtr<CSSValueList> parseFontFamily();
bool parseCounter(int propId, int defaultValue, bool important);
PassRefPtr<CSSValue> parseCounterContent(CSSParserValueList* args, bool counters);
bool parseColorParameters(CSSParserValue*, int* colorValues, bool parseAlpha);
bool parseHSLParameters(CSSParserValue*, double* colorValues, bool parseAlpha);
PassRefPtr<CSSPrimitiveValue> parseColor(CSSParserValue* = 0);
bool parseColorFromValue(CSSParserValue*, RGBA32&);
void parseSelector(const String&, Document* doc, CSSSelectorList&);
static bool parseColor(const String&, RGBA32& rgb, bool strict);
bool parseFontStyle(bool important);
bool parseFontVariant(bool important);
bool parseFontWeight(bool important);
bool parseFontFaceSrc();
bool parseFontFaceUnicodeRange();
#if ENABLE(SVG)
bool parseSVGValue(int propId, bool important);
PassRefPtr<CSSValue> parseSVGPaint();
PassRefPtr<CSSValue> parseSVGColor();
PassRefPtr<CSSValue> parseSVGStrokeDasharray();
#endif
#if ENABLE(WCSS)
PassRefPtr<CSSValue> parseWCSSInputProperty();
#endif
// CSS3 Parsing Routines (for properties specific to CSS3)
bool parseShadow(int propId, bool important);
bool parseBorderImage(int propId, bool important, RefPtr<CSSValue>&);
bool parseBorderRadius(int propId, bool important);
bool parseReflect(int propId, bool important);
// Image generators
bool parseCanvas(RefPtr<CSSValue>&);
bool parseGradient(RefPtr<CSSValue>&);
PassRefPtr<CSSValueList> parseTransform();
bool parseTransformOrigin(int propId, int& propId1, int& propId2, int& propId3, RefPtr<CSSValue>&, RefPtr<CSSValue>&, RefPtr<CSSValue>&);
bool parsePerspectiveOrigin(int propId, int& propId1, int& propId2, RefPtr<CSSValue>&, RefPtr<CSSValue>&);
bool parseVariable(CSSVariablesDeclaration*, const String& variableName, const String& variableValue);
void parsePropertyWithResolvedVariables(int propId, bool important, CSSMutableStyleDeclaration*, CSSParserValueList*);
int yyparse();
CSSSelector* createFloatingSelector();
CSSSelector* sinkFloatingSelector(CSSSelector*);
CSSParserValueList* createFloatingValueList();
CSSParserValueList* sinkFloatingValueList(CSSParserValueList*);
CSSParserFunction* createFloatingFunction();
CSSParserFunction* sinkFloatingFunction(CSSParserFunction*);
CSSParserValue& sinkFloatingValue(CSSParserValue&);
MediaList* createMediaList();
CSSRule* createCharsetRule(const CSSParserString&);
CSSRule* createImportRule(const CSSParserString&, MediaList*);
WebKitCSSKeyframeRule* createKeyframeRule(CSSParserValueList*);
WebKitCSSKeyframesRule* createKeyframesRule();
CSSRule* createMediaRule(MediaList*, CSSRuleList*);
CSSRuleList* createRuleList();
CSSRule* createStyleRule(Vector<CSSSelector*>* selectors);
CSSRule* createFontFaceRule();
CSSRule* createVariablesRule(MediaList*, bool variablesKeyword);
CSSRule* createPageRule(CSSSelector* pageSelector);
CSSRule* createMarginAtRule(CSSSelector::MarginBoxType marginBox);
void startDeclarationsForMarginBox();
void endDeclarationsForMarginBox();
MediaQueryExp* createFloatingMediaQueryExp(const AtomicString&, CSSParserValueList*);
MediaQueryExp* sinkFloatingMediaQueryExp(MediaQueryExp*);
Vector<MediaQueryExp*>* createFloatingMediaQueryExpList();
Vector<MediaQueryExp*>* sinkFloatingMediaQueryExpList(Vector<MediaQueryExp*>*);
MediaQuery* createFloatingMediaQuery(MediaQuery::Restrictor, const String&, Vector<MediaQueryExp*>*);
MediaQuery* createFloatingMediaQuery(Vector<MediaQueryExp*>*);
MediaQuery* sinkFloatingMediaQuery(MediaQuery*);
void addNamespace(const AtomicString& prefix, const AtomicString& uri);
bool addVariable(const CSSParserString&, CSSParserValueList*);
bool addVariableDeclarationBlock(const CSSParserString&);
bool checkForVariables(CSSParserValueList*);
void addUnresolvedProperty(int propId, bool important);
void invalidBlockHit();
Vector<CSSSelector*>* reusableSelectorVector() { return &m_reusableSelectorVector; }
void updateLastSelectorLineAndPosition();
void clearProperties();
bool m_strict;
bool m_important;
int m_id;
CSSStyleSheet* m_styleSheet;
RefPtr<CSSRule> m_rule;
RefPtr<CSSRule> m_keyframe;
MediaQuery* m_mediaQuery;
CSSParserValueList* m_valueList;
CSSProperty** m_parsedProperties;
CSSSelectorList* m_selectorListForParseSelector;
unsigned m_numParsedProperties;
unsigned m_maxParsedProperties;
unsigned m_numParsedPropertiesBeforeMarginBox;
int m_inParseShorthand;
int m_currentShorthand;
bool m_implicitShorthand;
bool m_hasFontFaceOnlyValues;
bool m_hadSyntacticallyValidCSSRule;
Vector<String> m_variableNames;
Vector<RefPtr<CSSValue> > m_variableValues;
AtomicString m_defaultNamespace;
// tokenizer methods and data
unsigned m_ruleBodyStartOffset;
unsigned m_ruleBodyEndOffset;
StyleRuleRanges* m_ruleRanges;
void markRuleBodyStart();
void markRuleBodyEnd();
void resetRuleBodyMarks() { m_ruleBodyStartOffset = m_ruleBodyEndOffset = 0; }
int lex(void* yylval);
int token() { return yyTok; }
UChar* text(int* length);
void countLines();
int lex();
private:
void recheckAtKeyword(const UChar* str, int len);
void setupParser(const char* prefix, const String&, const char* suffix);
bool inShorthand() const { return m_inParseShorthand; }
void checkForOrphanedUnits();
void clearVariables();
void deleteFontFaceOnlyValues();
enum SizeParameterType {
None,
Auto,
Length,
PageSize,
Orientation,
};
bool parsePage(int propId, bool important);
bool parseSize(int propId, bool important);
SizeParameterType parseSizeParameter(CSSValueList* parsedValues, CSSParserValue* value, SizeParameterType prevParamType);
UChar* m_data;
UChar* yytext;
UChar* yy_c_buf_p;
UChar yy_hold_char;
int yy_last_accepting_state;
UChar* yy_last_accepting_cpos;
int yyleng;
int yyTok;
int yy_start;
int m_lineNumber;
int m_lastSelectorLineNumber;
bool m_allowImportRules;
bool m_allowVariablesRules;
bool m_allowNamespaceDeclarations;
Vector<RefPtr<StyleBase> > m_parsedStyleObjects;
Vector<RefPtr<CSSRuleList> > m_parsedRuleLists;
HashSet<CSSSelector*> m_floatingSelectors;
HashSet<CSSParserValueList*> m_floatingValueLists;
HashSet<CSSParserFunction*> m_floatingFunctions;
MediaQuery* m_floatingMediaQuery;
MediaQueryExp* m_floatingMediaQueryExp;
Vector<MediaQueryExp*>* m_floatingMediaQueryExpList;
Vector<CSSSelector*> m_reusableSelectorVector;
// defines units allowed for a certain property, used in parseUnit
enum Units {
FUnknown = 0x0000,
FInteger = 0x0001,
FNumber = 0x0002, // Real Numbers
FPercent = 0x0004,
FLength = 0x0008,
FAngle = 0x0010,
FTime = 0x0020,
FFrequency = 0x0040,
FRelative = 0x0100,
FNonNeg = 0x0200
};
friend inline Units operator|(Units a, Units b)
{
return static_cast<Units>(static_cast<unsigned>(a) | static_cast<unsigned>(b));
}
static bool validUnit(CSSParserValue*, Units, bool strict);
friend class TransformOperationInfo;
};
int cssPropertyID(const CSSParserString&);
int cssPropertyID(const String&);
int cssValueKeywordID(const CSSParserString&);
class ShorthandScope : public FastAllocBase {
public:
ShorthandScope(CSSParser* parser, int propId) : m_parser(parser)
{
if (!(m_parser->m_inParseShorthand++))
m_parser->m_currentShorthand = propId;
}
~ShorthandScope()
{
if (!(--m_parser->m_inParseShorthand))
m_parser->m_currentShorthand = 0;
}
private:
CSSParser* m_parser;
};
String quoteCSSString(const String&);
String quoteCSSStringIfNeeded(const String&);
String quoteCSSURLIfNeeded(const String&);
} // namespace WebCore
#endif // CSSParser_h
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