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ara-mdk / platform / external / webkit / 2daae5fd11344eaa88a0d92b0f6d65f8d2255c00 / . / Source / WebCore / css / CSSParser.cpp
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/*
* Copyright (C) 2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
* Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
* Copyright (C) 2008 Eric Seidel <eric@webkit.org>
* Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
*
* 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.
*/
#include "config.h"
#include "CSSParser.h"
#include "CSSBorderImageValue.h"
#include "CSSCanvasValue.h"
#include "CSSCharsetRule.h"
#include "CSSCursorImageValue.h"
#include "CSSFontFaceRule.h"
#include "CSSFontFaceSrcValue.h"
#include "CSSGradientValue.h"
#include "CSSImageValue.h"
#include "CSSImportRule.h"
#include "CSSInheritedValue.h"
#include "CSSInitialValue.h"
#include "CSSLineBoxContainValue.h"
#include "CSSMediaRule.h"
#include "CSSMutableStyleDeclaration.h"
#include "CSSPageRule.h"
#include "CSSPrimitiveValue.h"
#include "CSSPrimitiveValueCache.h"
#include "CSSProperty.h"
#include "CSSPropertyNames.h"
#include "CSSPropertySourceData.h"
#include "CSSQuirkPrimitiveValue.h"
#include "CSSReflectValue.h"
#include "CSSRuleList.h"
#include "CSSSelector.h"
#include "CSSStyleRule.h"
#include "CSSStyleSheet.h"
#include "CSSTimingFunctionValue.h"
#include "CSSUnicodeRangeValue.h"
#include "CSSValueKeywords.h"
#include "CSSValueList.h"
#include "Counter.h"
#include "Document.h"
#include "FloatConversion.h"
#include "FontFamilyValue.h"
#include "FontValue.h"
#include "HTMLParserIdioms.h"
#include "HashTools.h"
#include "MediaList.h"
#include "MediaQueryExp.h"
#include "Page.h"
#include "Pair.h"
#include "Rect.h"
#include "RenderTheme.h"
#include "ShadowValue.h"
#include "WebKitCSSKeyframeRule.h"
#include "WebKitCSSKeyframesRule.h"
#include "WebKitCSSTransformValue.h"
#include <limits.h>
#include <wtf/HexNumber.h>
#include <wtf/dtoa.h>
#include <wtf/text/StringBuffer.h>
#if ENABLE(DASHBOARD_SUPPORT)
#include "DashboardRegion.h"
#endif
#define YYDEBUG 0
#if YYDEBUG > 0
extern int cssyydebug;
#endif
extern int cssyyparse(void* parser);
using namespace std;
using namespace WTF;
#ifdef ANDROID_INSTRUMENT
#include "TimeCounter.h"
#endif
namespace WebCore {
static const unsigned INVALID_NUM_PARSED_PROPERTIES = UINT_MAX;
static const double MAX_SCALE = 1000000;
static bool equal(const CSSParserString& a, const char* b)
{
for (int i = 0; i < a.length; ++i) {
if (!b[i])
return false;
if (a.characters[i] != b[i])
return false;
}
return !b[a.length];
}
static bool equalIgnoringCase(const CSSParserString& a, const char* b)
{
for (int i = 0; i < a.length; ++i) {
if (!b[i])
return false;
ASSERT(!isASCIIUpper(b[i]));
if (toASCIILower(a.characters[i]) != b[i])
return false;
}
return !b[a.length];
}
static bool hasPrefix(const char* string, unsigned length, const char* prefix)
{
for (unsigned i = 0; i < length; ++i) {
if (!prefix[i])
return true;
if (string[i] != prefix[i])
return false;
}
return false;
}
CSSParser::CSSParser(bool strictParsing)
: m_strict(strictParsing)
, m_important(false)
, m_id(0)
, m_styleSheet(0)
, m_valueList(0)
, m_parsedProperties(static_cast<CSSProperty**>(fastMalloc(32 * sizeof(CSSProperty*))))
, m_numParsedProperties(0)
, m_maxParsedProperties(32)
, m_numParsedPropertiesBeforeMarginBox(INVALID_NUM_PARSED_PROPERTIES)
, m_inParseShorthand(0)
, m_currentShorthand(0)
, m_implicitShorthand(false)
, m_hasFontFaceOnlyValues(false)
, m_hadSyntacticallyValidCSSRule(false)
, m_defaultNamespace(starAtom)
, m_inStyleRuleOrDeclaration(false)
, m_selectorListRange(0, 0)
, m_ruleBodyRange(0, 0)
, m_propertyRange(UINT_MAX, UINT_MAX)
, m_ruleRangeMap(0)
, m_currentRuleData(0)
, m_data(0)
, yy_start(1)
, m_lineNumber(0)
, m_lastSelectorLineNumber(0)
, m_allowImportRules(true)
, m_allowNamespaceDeclarations(true)
{
#if YYDEBUG > 0
cssyydebug = 1;
#endif
CSSPropertySourceData::init();
}
CSSParser::~CSSParser()
{
clearProperties();
fastFree(m_parsedProperties);
delete m_valueList;
fastFree(m_data);
fastDeleteAllValues(m_floatingSelectors);
deleteAllValues(m_floatingSelectorVectors);
deleteAllValues(m_floatingValueLists);
deleteAllValues(m_floatingFunctions);
}
void CSSParserString::lower()
{
// FIXME: If we need Unicode lowercasing here, then we probably want the real kind
// that can potentially change the length of the string rather than the character
// by character kind. If we don't need Unicode lowercasing, it would be good to
// simplify this function.
if (charactersAreAllASCII(characters, length)) {
// Fast case for all-ASCII.
for (int i = 0; i < length; i++)
characters[i] = toASCIILower(characters[i]);
} else {
for (int i = 0; i < length; i++)
characters[i] = Unicode::toLower(characters[i]);
}
}
void CSSParser::setupParser(const char* prefix, const String& string, const char* suffix)
{
int length = string.length() + strlen(prefix) + strlen(suffix) + 2;
fastFree(m_data);
m_data = static_cast<UChar*>(fastMalloc(length * sizeof(UChar)));
for (unsigned i = 0; i < strlen(prefix); i++)
m_data[i] = prefix[i];
memcpy(m_data + strlen(prefix), string.characters(), string.length() * sizeof(UChar));
unsigned start = strlen(prefix) + string.length();
unsigned end = start + strlen(suffix);
for (unsigned i = start; i < end; i++)
m_data[i] = suffix[i - start];
m_data[length - 1] = 0;
m_data[length - 2] = 0;
yy_hold_char = 0;
yyleng = 0;
yytext = yy_c_buf_p = m_data;
yy_hold_char = *yy_c_buf_p;
resetRuleBodyMarks();
}
void CSSParser::parseSheet(CSSStyleSheet* sheet, const String& string, int startLineNumber, StyleRuleRangeMap* ruleRangeMap)
{
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::start(android::TimeCounter::CSSParseTimeCounter);
#endif
setStyleSheet(sheet);
m_defaultNamespace = starAtom; // Reset the default namespace.
m_ruleRangeMap = ruleRangeMap;
if (ruleRangeMap) {
m_currentRuleData = CSSRuleSourceData::create();
m_currentRuleData->styleSourceData = CSSStyleSourceData::create();
}
m_lineNumber = startLineNumber;
setupParser("", string, "");
cssyyparse(this);
m_ruleRangeMap = 0;
m_currentRuleData = 0;
m_rule = 0;
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::record(android::TimeCounter::CSSParseTimeCounter, __FUNCTION__);
#endif
}
PassRefPtr<CSSRule> CSSParser::parseRule(CSSStyleSheet* sheet, const String& string)
{
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::start(android::TimeCounter::CSSParseTimeCounter);
#endif
setStyleSheet(sheet);
m_allowNamespaceDeclarations = false;
setupParser("@-webkit-rule{", string, "} ");
cssyyparse(this);
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::record(android::TimeCounter::CSSParseTimeCounter, __FUNCTION__);
#endif
return m_rule.release();
}
PassRefPtr<CSSRule> CSSParser::parseKeyframeRule(CSSStyleSheet *sheet, const String &string)
{
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::start(android::TimeCounter::CSSParseTimeCounter);
#endif
setStyleSheet(sheet);
setupParser("@-webkit-keyframe-rule{ ", string, "} ");
cssyyparse(this);
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::record(android::TimeCounter::CSSParseTimeCounter, __FUNCTION__);
#endif
return m_keyframe.release();
}
static inline bool isColorPropertyID(int propertyId)
{
switch (propertyId) {
case CSSPropertyColor:
case CSSPropertyBackgroundColor:
case CSSPropertyBorderBottomColor:
case CSSPropertyBorderLeftColor:
case CSSPropertyBorderRightColor:
case CSSPropertyBorderTopColor:
case CSSPropertyOutlineColor:
case CSSPropertyTextLineThroughColor:
case CSSPropertyTextOverlineColor:
case CSSPropertyTextUnderlineColor:
case CSSPropertyWebkitBorderAfterColor:
case CSSPropertyWebkitBorderBeforeColor:
case CSSPropertyWebkitBorderEndColor:
case CSSPropertyWebkitBorderStartColor:
case CSSPropertyWebkitColumnRuleColor:
case CSSPropertyWebkitTextEmphasisColor:
case CSSPropertyWebkitTextFillColor:
case CSSPropertyWebkitTextStrokeColor:
return true;
default:
return false;
}
}
static bool parseColorValue(CSSMutableStyleDeclaration* declaration, int propertyId, const String& string, bool important, bool strict)
{
if (!string.length())
return false;
if (!isColorPropertyID(propertyId))
return false;
CSSParserString cssString;
cssString.characters = const_cast<UChar*>(string.characters());
cssString.length = string.length();
int valueID = cssValueKeywordID(cssString);
bool validPrimitive = false;
if (valueID == CSSValueWebkitText)
validPrimitive = true;
else if (valueID == CSSValueCurrentcolor)
validPrimitive = true;
else if ((valueID >= CSSValueAqua && valueID <= CSSValueWindowtext) || valueID == CSSValueMenu
|| (valueID >= CSSValueWebkitFocusRingColor && valueID < CSSValueWebkitText && !strict)) {
validPrimitive = true;
}
CSSStyleSheet* stylesheet = static_cast<CSSStyleSheet*>(declaration->stylesheet());
if (!stylesheet || !stylesheet->document())
return false;
if (validPrimitive) {
CSSProperty property(propertyId, stylesheet->document()->cssPrimitiveValueCache()->createIdentifierValue(valueID), important);
declaration->addParsedProperty(property);
return true;
}
RGBA32 color;
if (!CSSParser::parseColor(string, color, strict && string[0] != '#'))
return false;
CSSProperty property(propertyId, stylesheet->document()->cssPrimitiveValueCache()->createColorValue(color), important);
declaration->addParsedProperty(property);
return true;
}
static inline bool isSimpleLengthPropertyID(int propertyId, bool& acceptsNegativeNumbers)
{
switch (propertyId) {
case CSSPropertyFontSize:
case CSSPropertyHeight:
case CSSPropertyWidth:
case CSSPropertyMinHeight:
case CSSPropertyMinWidth:
case CSSPropertyPaddingBottom:
case CSSPropertyPaddingLeft:
case CSSPropertyPaddingRight:
case CSSPropertyPaddingTop:
case CSSPropertyWebkitLogicalWidth:
case CSSPropertyWebkitLogicalHeight:
case CSSPropertyWebkitMinLogicalWidth:
case CSSPropertyWebkitMinLogicalHeight:
case CSSPropertyWebkitPaddingAfter:
case CSSPropertyWebkitPaddingBefore:
case CSSPropertyWebkitPaddingEnd:
case CSSPropertyWebkitPaddingStart:
acceptsNegativeNumbers = false;
return true;
case CSSPropertyBottom:
case CSSPropertyLeft:
case CSSPropertyMarginBottom:
case CSSPropertyMarginLeft:
case CSSPropertyMarginRight:
case CSSPropertyMarginTop:
case CSSPropertyRight:
case CSSPropertyTextIndent:
case CSSPropertyTop:
case CSSPropertyWebkitMarginAfter:
case CSSPropertyWebkitMarginBefore:
case CSSPropertyWebkitMarginEnd:
case CSSPropertyWebkitMarginStart:
acceptsNegativeNumbers = true;
return true;
default:
return false;
}
}
static bool parseSimpleLengthValue(CSSMutableStyleDeclaration* declaration, int propertyId, const String& string, bool important, bool strict)
{
const UChar* characters = string.characters();
unsigned length = string.length();
if (!characters || !length)
return false;
bool acceptsNegativeNumbers;
if (!isSimpleLengthPropertyID(propertyId, acceptsNegativeNumbers))
return false;
CSSPrimitiveValue::UnitTypes unit = CSSPrimitiveValue::CSS_NUMBER;
if (length > 2 && characters[length - 2] == 'p' && characters[length - 1] == 'x') {
length -= 2;
unit = CSSPrimitiveValue::CSS_PX;
} else if (length > 1 && characters[length - 1] == '%') {
length -= 1;
unit = CSSPrimitiveValue::CSS_PERCENTAGE;
}
// We rely on charactersToDouble for validation as well. The function
// will set "ok" to "false" if the entire passed-in character range does
// not represent a double.
bool ok;
double number = charactersToDouble(characters, length, &ok);
if (!ok)
return false;
if (unit == CSSPrimitiveValue::CSS_NUMBER) {
if (number && strict)
return false;
unit = CSSPrimitiveValue::CSS_PX;
}
if (number < 0 && !acceptsNegativeNumbers)
return false;
CSSStyleSheet* stylesheet = static_cast<CSSStyleSheet*>(declaration->stylesheet());
if (!stylesheet || !stylesheet->document())
return false;
CSSProperty property(propertyId, stylesheet->document()->cssPrimitiveValueCache()->createValue(number, unit), important);
declaration->addParsedProperty(property);
return true;
}
bool CSSParser::parseValue(CSSMutableStyleDeclaration* declaration, int propertyId, const String& string, bool important, bool strict)
{
if (parseSimpleLengthValue(declaration, propertyId, string, important, strict))
return true;
if (parseColorValue(declaration, propertyId, string, important, strict))
return true;
CSSParser parser(strict);
return parser.parseValue(declaration, propertyId, string, important);
}
bool CSSParser::parseValue(CSSMutableStyleDeclaration* declaration, int propertyId, const String& string, bool important)
{
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::start(android::TimeCounter::CSSParseTimeCounter);
#endif
ASSERT(!declaration->stylesheet() || declaration->stylesheet()->isCSSStyleSheet());
setStyleSheet(static_cast<CSSStyleSheet*>(declaration->stylesheet()));
setupParser("@-webkit-value{", string, "} ");
m_id = propertyId;
m_important = important;
cssyyparse(this);
m_rule = 0;
bool ok = false;
if (m_hasFontFaceOnlyValues)
deleteFontFaceOnlyValues();
if (m_numParsedProperties) {
ok = true;
declaration->addParsedProperties(m_parsedProperties, m_numParsedProperties);
clearProperties();
}
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::record(android::TimeCounter::CSSParseTimeCounter, __FUNCTION__);
#endif
return ok;
}
// color will only be changed when string contains a valid css color, making it
// possible to set up a default color.
bool CSSParser::parseColor(RGBA32& color, const String& string, bool strict)
{
// First try creating a color specified by name, rgba(), rgb() or "#" syntax.
if (parseColor(string, color, strict))
return true;
CSSParser parser(true);
RefPtr<CSSMutableStyleDeclaration> dummyStyleDeclaration = CSSMutableStyleDeclaration::create();
// Now try to create a color from rgba() syntax.
if (!parser.parseColor(dummyStyleDeclaration.get(), string))
return false;
CSSValue* value = parser.m_parsedProperties[0]->value();
if (value->cssValueType() != CSSValue::CSS_PRIMITIVE_VALUE)
return false;
CSSPrimitiveValue* primitiveValue = static_cast<CSSPrimitiveValue*>(value);
if (primitiveValue->primitiveType() != CSSPrimitiveValue::CSS_RGBCOLOR)
return false;
color = primitiveValue->getRGBA32Value();
return true;
}
bool CSSParser::parseColor(CSSMutableStyleDeclaration* declaration, const String& string)
{
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::start(android::TimeCounter::CSSParseTimeCounter);
#endif
ASSERT(!declaration->stylesheet() || declaration->stylesheet()->isCSSStyleSheet());
setStyleSheet(static_cast<CSSStyleSheet*>(declaration->stylesheet()));
setupParser("@-webkit-decls{color:", string, "} ");
cssyyparse(this);
m_rule = 0;
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::record(android::TimeCounter::CSSParseTimeCounter, __FUNCTION__);
#endif
return (m_numParsedProperties && m_parsedProperties[0]->m_id == CSSPropertyColor);
}
bool CSSParser::parseSystemColor(RGBA32& color, const String& string, Document* document)
{
if (!document || !document->page())
return false;
CSSParserString cssColor;
cssColor.characters = const_cast<UChar*>(string.characters());
cssColor.length = string.length();
int id = cssValueKeywordID(cssColor);
if (id <= 0)
return false;
color = document->page()->theme()->systemColor(id).rgb();
return true;
}
void CSSParser::parseSelector(const String& string, Document* doc, CSSSelectorList& selectorList)
{
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::start(android::TimeCounter::CSSParseTimeCounter);
#endif
RefPtr<CSSStyleSheet> dummyStyleSheet = CSSStyleSheet::create(doc);
setStyleSheet(dummyStyleSheet.get());
m_selectorListForParseSelector = &selectorList;
setupParser("@-webkit-selector{", string, "}");
cssyyparse(this);
m_selectorListForParseSelector = 0;
// The style sheet will be deleted right away, so it won't outlive the document.
ASSERT(dummyStyleSheet->hasOneRef());
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::record(android::TimeCounter::CSSParseTimeCounter, __FUNCTION__);
#endif
}
bool CSSParser::parseDeclaration(CSSMutableStyleDeclaration* declaration, const String& string, RefPtr<CSSStyleSourceData>* styleSourceData)
{
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::start(android::TimeCounter::CSSParseTimeCounter);
#endif
// Length of the "@-webkit-decls{" prefix.
static const unsigned prefixLength = 15;
ASSERT(!declaration->stylesheet() || declaration->stylesheet()->isCSSStyleSheet());
setStyleSheet(static_cast<CSSStyleSheet*>(declaration->stylesheet()));
if (styleSourceData) {
m_currentRuleData = CSSRuleSourceData::create();
m_currentRuleData->styleSourceData = CSSStyleSourceData::create();
m_inStyleRuleOrDeclaration = true;
}
setupParser("@-webkit-decls{", string, "} ");
cssyyparse(this);
m_rule = 0;
bool ok = false;
if (m_hasFontFaceOnlyValues)
deleteFontFaceOnlyValues();
if (m_numParsedProperties) {
ok = true;
declaration->addParsedProperties(m_parsedProperties, m_numParsedProperties);
clearProperties();
}
if (m_currentRuleData) {
m_currentRuleData->styleSourceData->styleBodyRange.start = 0;
m_currentRuleData->styleSourceData->styleBodyRange.end = string.length();
for (Vector<CSSPropertySourceData>::iterator it = m_currentRuleData->styleSourceData->propertyData.begin(), endIt = m_currentRuleData->styleSourceData->propertyData.end(); it != endIt; ++it) {
(*it).range.start -= prefixLength;
(*it).range.end -= prefixLength;
}
}
if (styleSourceData) {
*styleSourceData = m_currentRuleData->styleSourceData.release();
m_currentRuleData = 0;
m_inStyleRuleOrDeclaration = false;
}
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::record(android::TimeCounter::CSSParseTimeCounter, __FUNCTION__);
#endif
return ok;
}
bool CSSParser::parseMediaQuery(MediaList* queries, const String& string)
{
if (string.isEmpty())
return true;
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::start(android::TimeCounter::CSSParseTimeCounter);
#endif
ASSERT(!m_mediaQuery);
// can't use { because tokenizer state switches from mediaquery to initial state when it sees { token.
// instead insert one " " (which is WHITESPACE in CSSGrammar.y)
setupParser("@-webkit-mediaquery ", string, "} ");
cssyyparse(this);
bool ok = false;
if (m_mediaQuery) {
ok = true;
queries->appendMediaQuery(m_mediaQuery.release());
}
#ifdef ANDROID_INSTRUMENT
android::TimeCounter::record(android::TimeCounter::CSSParseTimeCounter, __FUNCTION__);
#endif
return ok;
}
void CSSParser::addProperty(int propId, PassRefPtr<CSSValue> value, bool important)
{
OwnPtr<CSSProperty> prop(new CSSProperty(propId, value, important, m_currentShorthand, m_implicitShorthand));
if (m_numParsedProperties >= m_maxParsedProperties) {
m_maxParsedProperties += 32;
if (m_maxParsedProperties > UINT_MAX / sizeof(CSSProperty*))
return;
m_parsedProperties = static_cast<CSSProperty**>(fastRealloc(m_parsedProperties,
m_maxParsedProperties * sizeof(CSSProperty*)));
}
m_parsedProperties[m_numParsedProperties++] = prop.leakPtr();
}
void CSSParser::rollbackLastProperties(int num)
{
ASSERT(num >= 0);
ASSERT(m_numParsedProperties >= static_cast<unsigned>(num));
for (int i = 0; i < num; ++i)
delete m_parsedProperties[--m_numParsedProperties];
}
void CSSParser::clearProperties()
{
for (unsigned i = 0; i < m_numParsedProperties; i++)
delete m_parsedProperties[i];
m_numParsedProperties = 0;
m_numParsedPropertiesBeforeMarginBox = INVALID_NUM_PARSED_PROPERTIES;
m_hasFontFaceOnlyValues = false;
}
void CSSParser::setStyleSheet(CSSStyleSheet* styleSheet)
{
m_styleSheet = styleSheet;
m_primitiveValueCache = document() ? document()->cssPrimitiveValueCache() : CSSPrimitiveValueCache::create();
}
Document* CSSParser::document() const
{
StyleBase* root = m_styleSheet;
while (root && root->parent())
root = root->parent();
if (!root)
return 0;
if (!root->isCSSStyleSheet())
return 0;
return static_cast<CSSStyleSheet*>(root)->document();
}
bool CSSParser::validUnit(CSSParserValue* value, Units unitflags, bool strict)
{
bool b = false;
switch (value->unit) {
case CSSPrimitiveValue::CSS_NUMBER:
b = (unitflags & FNumber);
if (!b && ((unitflags & (FLength | FAngle | FTime)) && (value->fValue == 0 || !strict))) {
value->unit = (unitflags & FLength) ? CSSPrimitiveValue::CSS_PX :
((unitflags & FAngle) ? CSSPrimitiveValue::CSS_DEG : CSSPrimitiveValue::CSS_MS);
b = true;
}
if (!b && (unitflags & FInteger) && value->isInt)
b = true;
break;
case CSSPrimitiveValue::CSS_PERCENTAGE:
b = (unitflags & FPercent);
break;
case CSSParserValue::Q_EMS:
case CSSPrimitiveValue::CSS_EMS:
case CSSPrimitiveValue::CSS_REMS:
case CSSPrimitiveValue::CSS_EXS:
case CSSPrimitiveValue::CSS_PX:
case CSSPrimitiveValue::CSS_CM:
case CSSPrimitiveValue::CSS_MM:
case CSSPrimitiveValue::CSS_IN:
case CSSPrimitiveValue::CSS_PT:
case CSSPrimitiveValue::CSS_PC:
b = (unitflags & FLength);
break;
case CSSPrimitiveValue::CSS_MS:
case CSSPrimitiveValue::CSS_S:
b = (unitflags & FTime);
break;
case CSSPrimitiveValue::CSS_DEG:
case CSSPrimitiveValue::CSS_RAD:
case CSSPrimitiveValue::CSS_GRAD:
case CSSPrimitiveValue::CSS_TURN:
b = (unitflags & FAngle);
break;
case CSSPrimitiveValue::CSS_HZ:
case CSSPrimitiveValue::CSS_KHZ:
case CSSPrimitiveValue::CSS_DIMENSION:
default:
break;
}
if (b && unitflags & FNonNeg && value->fValue < 0)
b = false;
return b;
}
static int unitFromString(CSSParserValue* value)
{
if (value->unit != CSSPrimitiveValue::CSS_IDENT || value->id)
return 0;
if (equal(value->string, "em"))
return CSSPrimitiveValue::CSS_EMS;
if (equal(value->string, "rem"))
return CSSPrimitiveValue::CSS_REMS;
if (equal(value->string, "ex"))
return CSSPrimitiveValue::CSS_EXS;
if (equal(value->string, "px"))
return CSSPrimitiveValue::CSS_PX;
if (equal(value->string, "cm"))
return CSSPrimitiveValue::CSS_CM;
if (equal(value->string, "mm"))
return CSSPrimitiveValue::CSS_MM;
if (equal(value->string, "in"))
return CSSPrimitiveValue::CSS_IN;
if (equal(value->string, "pt"))
return CSSPrimitiveValue::CSS_PT;
if (equal(value->string, "pc"))
return CSSPrimitiveValue::CSS_PC;
if (equal(value->string, "deg"))
return CSSPrimitiveValue::CSS_DEG;
if (equal(value->string, "rad"))
return CSSPrimitiveValue::CSS_RAD;
if (equal(value->string, "grad"))
return CSSPrimitiveValue::CSS_GRAD;
if (equal(value->string, "turn"))
return CSSPrimitiveValue::CSS_TURN;
if (equal(value->string, "ms"))
return CSSPrimitiveValue::CSS_MS;
if (equal(value->string, "s"))
return CSSPrimitiveValue::CSS_S;
if (equal(value->string, "Hz"))
return CSSPrimitiveValue::CSS_HZ;
if (equal(value->string, "kHz"))
return CSSPrimitiveValue::CSS_KHZ;
return 0;
}
void CSSParser::checkForOrphanedUnits()
{
if (m_strict || inShorthand())
return;
// The purpose of this code is to implement the WinIE quirk that allows unit types to be separated from their numeric values
// by whitespace, so e.g., width: 20 px instead of width:20px. This is invalid CSS, so we don't do this in strict mode.
CSSParserValue* numericVal = 0;
unsigned size = m_valueList->size();
for (unsigned i = 0; i < size; i++) {
CSSParserValue* value = m_valueList->valueAt(i);
if (numericVal) {
// Change the unit type of the numeric val to match.
int unit = unitFromString(value);
if (unit) {
numericVal->unit = unit;
numericVal = 0;
// Now delete the bogus unit value.
m_valueList->deleteValueAt(i);
i--; // We're safe even though |i| is unsigned, since we only hit this code if we had a previous numeric value (so |i| is always > 0 here).
size--;
continue;
}
}
numericVal = (value->unit == CSSPrimitiveValue::CSS_NUMBER) ? value : 0;
}
}
bool CSSParser::parseValue(int propId, bool important)
{
if (!m_valueList)
return false;
CSSParserValue* value = m_valueList->current();
if (!value)
return false;
int id = value->id;
// In quirks mode, we will look for units that have been incorrectly separated from the number they belong to
// by a space. We go ahead and associate the unit with the number even though it is invalid CSS.
checkForOrphanedUnits();
int num = inShorthand() ? 1 : m_valueList->size();
if (id == CSSValueInherit) {
if (num != 1)
return false;
addProperty(propId, CSSInheritedValue::create(), important);
return true;
}
else if (id == CSSValueInitial) {
if (num != 1)
return false;
addProperty(propId, CSSInitialValue::createExplicit(), important);
return true;
}
bool validPrimitive = false;
RefPtr<CSSValue> parsedValue;
switch (static_cast<CSSPropertyID>(propId)) {
/* The comment to the left defines all valid value of this properties as defined
* in CSS 2, Appendix F. Property index
*/
/* All the CSS properties are not supported by the renderer at the moment.
* Note that all the CSS2 Aural properties are only checked, if CSS_AURAL is defined
* (see parseAuralValues). As we don't support them at all this seems reasonable.
*/
case CSSPropertySize: // <length>{1,2} | auto | [ <page-size> || [ portrait | landscape] ]
return parseSize(propId, important);
case CSSPropertyQuotes: // [<string> <string>]+ | none | inherit
if (id)
validPrimitive = true;
else
return parseQuotes(propId, important);
break;
case CSSPropertyUnicodeBidi: // normal | embed | bidi-override | isolate | inherit
if (id == CSSValueNormal
|| id == CSSValueEmbed
|| id == CSSValueBidiOverride
|| id == CSSValueWebkitIsolate)
validPrimitive = true;
break;
case CSSPropertyPosition: // static | relative | absolute | fixed | inherit
if (id == CSSValueStatic ||
id == CSSValueRelative ||
id == CSSValueAbsolute ||
id == CSSValueFixed)
validPrimitive = true;
break;
case CSSPropertyPageBreakAfter: // auto | always | avoid | left | right | inherit
case CSSPropertyPageBreakBefore:
case CSSPropertyWebkitColumnBreakAfter:
case CSSPropertyWebkitColumnBreakBefore:
if (id == CSSValueAuto ||
id == CSSValueAlways ||
id == CSSValueAvoid ||
id == CSSValueLeft ||
id == CSSValueRight)
validPrimitive = true;
break;
case CSSPropertyPageBreakInside: // avoid | auto | inherit
case CSSPropertyWebkitColumnBreakInside:
if (id == CSSValueAuto || id == CSSValueAvoid)
validPrimitive = true;
break;
case CSSPropertyEmptyCells: // show | hide | inherit
if (id == CSSValueShow ||
id == CSSValueHide)
validPrimitive = true;
break;
case CSSPropertyContent: // [ <string> | <uri> | <counter> | attr(X) | open-quote |
// close-quote | no-open-quote | no-close-quote ]+ | inherit
return parseContent(propId, important);
case CSSPropertyWhiteSpace: // normal | pre | nowrap | inherit
if (id == CSSValueNormal ||
id == CSSValuePre ||
id == CSSValuePreWrap ||
id == CSSValuePreLine ||
id == CSSValueNowrap)
validPrimitive = true;
break;
case CSSPropertyClip: // <shape> | auto | inherit
if (id == CSSValueAuto)
validPrimitive = true;
else if (value->unit == CSSParserValue::Function)
return parseShape(propId, important);
break;
/* Start of supported CSS properties with validation. This is needed for parseShorthand to work
* correctly and allows optimization in WebCore::applyRule(..)
*/
case CSSPropertyCaptionSide: // top | bottom | left | right | inherit
if (id == CSSValueLeft || id == CSSValueRight ||
id == CSSValueTop || id == CSSValueBottom)
validPrimitive = true;
break;
case CSSPropertyBorderCollapse: // collapse | separate | inherit
if (id == CSSValueCollapse || id == CSSValueSeparate)
validPrimitive = true;
break;
case CSSPropertyVisibility: // visible | hidden | collapse | inherit
if (id == CSSValueVisible || id == CSSValueHidden || id == CSSValueCollapse)
validPrimitive = true;
break;
case CSSPropertyOverflow: {
ShorthandScope scope(this, propId);
if (num != 1 || !parseValue(CSSPropertyOverflowX, important))
return false;
CSSValue* value = m_parsedProperties[m_numParsedProperties - 1]->value();
addProperty(CSSPropertyOverflowY, value, important);
return true;
}
case CSSPropertyOverflowX:
case CSSPropertyOverflowY: // visible | hidden | scroll | auto | marquee | overlay | inherit
if (id == CSSValueVisible || id == CSSValueHidden || id == CSSValueScroll || id == CSSValueAuto ||
id == CSSValueOverlay || id == CSSValueWebkitMarquee)
validPrimitive = true;
break;
case CSSPropertyListStylePosition: // inside | outside | inherit
if (id == CSSValueInside || id == CSSValueOutside)
validPrimitive = true;
break;
case CSSPropertyListStyleType:
// See section CSS_PROP_LIST_STYLE_TYPE of file CSSValueKeywords.in
// for the list of supported list-style-types.
if ((id >= CSSValueDisc && id <= CSSValueKatakanaIroha) || id == CSSValueNone)
validPrimitive = true;
break;
case CSSPropertyDisplay:
// inline | block | list-item | run-in | inline-block | table |
// inline-table | table-row-group | table-header-group | table-footer-group | table-row |
// table-column-group | table-column | table-cell | table-caption | box | inline-box | none | inherit
#if ENABLE(WCSS)
if ((id >= CSSValueInline && id <= CSSValueWapMarquee) || id == CSSValueNone)
#else
if ((id >= CSSValueInline && id <= CSSValueWebkitInlineBox) || id == CSSValueNone)
#endif
validPrimitive = true;
break;
case CSSPropertyDirection: // ltr | rtl | inherit
if (id == CSSValueLtr || id == CSSValueRtl)
validPrimitive = true;
break;
case CSSPropertyTextTransform: // capitalize | uppercase | lowercase | none | inherit
if ((id >= CSSValueCapitalize && id <= CSSValueLowercase) || id == CSSValueNone)
validPrimitive = true;
break;
case CSSPropertyFloat: // left | right | none | inherit + center for buggy CSS
if (id == CSSValueLeft || id == CSSValueRight ||
id == CSSValueNone || id == CSSValueCenter)
validPrimitive = true;
break;
case CSSPropertyClear: // none | left | right | both | inherit
if (id == CSSValueNone || id == CSSValueLeft ||
id == CSSValueRight|| id == CSSValueBoth)
validPrimitive = true;
break;
case CSSPropertyTextAlign:
// left | right | center | justify | webkit_left | webkit_right | webkit_center | webkit_match_parent |
// start | end | <string> | inherit
if ((id >= CSSValueWebkitAuto && id <= CSSValueWebkitMatchParent) || id == CSSValueStart || id == CSSValueEnd
|| value->unit == CSSPrimitiveValue::CSS_STRING)
validPrimitive = true;
break;
case CSSPropertyOutlineStyle: // (<border-style> except hidden) | auto | inherit
if (id == CSSValueAuto || id == CSSValueNone || (id >= CSSValueInset && id <= CSSValueDouble))
validPrimitive = true;
break;
case CSSPropertyBorderTopStyle: //// <border-style> | inherit
case CSSPropertyBorderRightStyle: // Defined as: none | hidden | dotted | dashed |
case CSSPropertyBorderBottomStyle: // solid | double | groove | ridge | inset | outset
case CSSPropertyBorderLeftStyle:
case CSSPropertyWebkitBorderStartStyle:
case CSSPropertyWebkitBorderEndStyle:
case CSSPropertyWebkitBorderBeforeStyle:
case CSSPropertyWebkitBorderAfterStyle:
case CSSPropertyWebkitColumnRuleStyle:
if (id >= CSSValueNone && id <= CSSValueDouble)
validPrimitive = true;
break;
case CSSPropertyFontWeight: // normal | bold | bolder | lighter | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | inherit
return parseFontWeight(important);
case CSSPropertyBorderSpacing: {
const int properties[2] = { CSSPropertyWebkitBorderHorizontalSpacing,
CSSPropertyWebkitBorderVerticalSpacing };
if (num == 1) {
ShorthandScope scope(this, CSSPropertyBorderSpacing);
if (!parseValue(properties[0], important))
return false;
CSSValue* value = m_parsedProperties[m_numParsedProperties-1]->value();
addProperty(properties[1], value, important);
return true;
}
else if (num == 2) {
ShorthandScope scope(this, CSSPropertyBorderSpacing);
if (!parseValue(properties[0], important) || !parseValue(properties[1], important))
return false;
return true;
}
return false;
}
case CSSPropertyWebkitBorderHorizontalSpacing:
case CSSPropertyWebkitBorderVerticalSpacing:
validPrimitive = validUnit(value, FLength | FNonNeg, m_strict);
break;
case CSSPropertyOutlineColor: // <color> | invert | inherit
// Outline color has "invert" as additional keyword.
// Also, we want to allow the special focus color even in strict parsing mode.
if (id == CSSValueInvert || id == CSSValueWebkitFocusRingColor) {
validPrimitive = true;
break;
}
/* nobreak */
case CSSPropertyBackgroundColor: // <color> | inherit
case CSSPropertyBorderTopColor: // <color> | inherit
case CSSPropertyBorderRightColor:
case CSSPropertyBorderBottomColor:
case CSSPropertyBorderLeftColor:
case CSSPropertyWebkitBorderStartColor:
case CSSPropertyWebkitBorderEndColor:
case CSSPropertyWebkitBorderBeforeColor:
case CSSPropertyWebkitBorderAfterColor:
case CSSPropertyColor: // <color> | inherit
case CSSPropertyTextLineThroughColor: // CSS3 text decoration colors
case CSSPropertyTextUnderlineColor:
case CSSPropertyTextOverlineColor:
case CSSPropertyWebkitColumnRuleColor:
case CSSPropertyWebkitTextEmphasisColor:
case CSSPropertyWebkitTextFillColor:
case CSSPropertyWebkitTextStrokeColor:
if (id == CSSValueWebkitText)
validPrimitive = true; // Always allow this, even when strict parsing is on,
// since we use this in our UA sheets.
else if (id == CSSValueCurrentcolor)
validPrimitive = true;
else if ((id >= CSSValueAqua && id <= CSSValueWindowtext) || id == CSSValueMenu ||
(id >= CSSValueWebkitFocusRingColor && id < CSSValueWebkitText && !m_strict)) {
validPrimitive = true;
} else {
parsedValue = parseColor();
if (parsedValue)
m_valueList->next();
}
break;
case CSSPropertyCursor: {
// [<uri>,]* [ auto | crosshair | default | pointer | progress | move | e-resize | ne-resize |
// nw-resize | n-resize | se-resize | sw-resize | s-resize | w-resize | ew-resize |
// ns-resize | nesw-resize | nwse-resize | col-resize | row-resize | text | wait | help |
// vertical-text | cell | context-menu | alias | copy | no-drop | not-allowed | -webkit-zoom-in
// -webkit-zoom-out | all-scroll | -webkit-grab | -webkit-grabbing ] ] | inherit
RefPtr<CSSValueList> list;
while (value && value->unit == CSSPrimitiveValue::CSS_URI) {
if (!list)
list = CSSValueList::createCommaSeparated();
String uri = value->string;
Vector<int> coords;
value = m_valueList->next();
while (value && value->unit == CSSPrimitiveValue::CSS_NUMBER) {
coords.append(int(value->fValue));
value = m_valueList->next();
}
IntPoint hotSpot(-1, -1);
int nrcoords = coords.size();
if (nrcoords > 0 && nrcoords != 2)
return false;
if (nrcoords == 2)
hotSpot = IntPoint(coords[0], coords[1]);
if (!uri.isNull() && m_styleSheet) {
// FIXME: The completeURL call should be done when using the CSSCursorImageValue,
// not when creating it.
list->append(CSSCursorImageValue::create(m_styleSheet->completeURL(uri), hotSpot));
}
if ((m_strict && !value) || (value && !(value->unit == CSSParserValue::Operator && value->iValue == ',')))
return false;
value = m_valueList->next(); // comma
}
if (list) {
if (!value) { // no value after url list (MSIE 5 compatibility)
if (list->length() != 1)
return false;
} else if (!m_strict && value->id == CSSValueHand) // MSIE 5 compatibility :/
list->append(primitiveValueCache()->createIdentifierValue(CSSValuePointer));
else if (value && ((value->id >= CSSValueAuto && value->id <= CSSValueWebkitGrabbing) || value->id == CSSValueCopy || value->id == CSSValueNone))
list->append(primitiveValueCache()->createIdentifierValue(value->id));
m_valueList->next();
parsedValue = list.release();
break;
}
id = value->id;
if (!m_strict && value->id == CSSValueHand) { // MSIE 5 compatibility :/
id = CSSValuePointer;
validPrimitive = true;
} else if ((value->id >= CSSValueAuto && value->id <= CSSValueWebkitGrabbing) || value->id == CSSValueCopy || value->id == CSSValueNone)
validPrimitive = true;
break;
}
case CSSPropertyBackgroundAttachment:
case CSSPropertyBackgroundClip:
case CSSPropertyWebkitBackgroundClip:
case CSSPropertyWebkitBackgroundComposite:
case CSSPropertyBackgroundImage:
case CSSPropertyBackgroundOrigin:
case CSSPropertyWebkitBackgroundOrigin:
case CSSPropertyBackgroundPosition:
case CSSPropertyBackgroundPositionX:
case CSSPropertyBackgroundPositionY:
case CSSPropertyBackgroundSize:
case CSSPropertyWebkitBackgroundSize:
case CSSPropertyBackgroundRepeat:
case CSSPropertyBackgroundRepeatX:
case CSSPropertyBackgroundRepeatY:
case CSSPropertyWebkitMaskAttachment:
case CSSPropertyWebkitMaskClip:
case CSSPropertyWebkitMaskComposite:
case CSSPropertyWebkitMaskImage:
case CSSPropertyWebkitMaskOrigin:
case CSSPropertyWebkitMaskPosition:
case CSSPropertyWebkitMaskPositionX:
case CSSPropertyWebkitMaskPositionY:
case CSSPropertyWebkitMaskSize:
case CSSPropertyWebkitMaskRepeat:
case CSSPropertyWebkitMaskRepeatX:
case CSSPropertyWebkitMaskRepeatY: {
RefPtr<CSSValue> val1;
RefPtr<CSSValue> val2;
int propId1, propId2;
bool result = false;
if (parseFillProperty(propId, propId1, propId2, val1, val2)) {
OwnPtr<ShorthandScope> shorthandScope;
if (propId == CSSPropertyBackgroundPosition ||
propId == CSSPropertyBackgroundRepeat ||
propId == CSSPropertyWebkitMaskPosition ||
propId == CSSPropertyWebkitMaskRepeat) {
shorthandScope.set(new ShorthandScope(this, propId));
}
addProperty(propId1, val1.release(), important);
if (val2)
addProperty(propId2, val2.release(), important);
result = true;
}
m_implicitShorthand = false;
return result;
}
case CSSPropertyListStyleImage: // <uri> | none | inherit
if (id == CSSValueNone) {
parsedValue = CSSImageValue::create();
m_valueList->next();
} else if (value->unit == CSSPrimitiveValue::CSS_URI) {
if (m_styleSheet) {
// FIXME: The completeURL call should be done when using the CSSImageValue,
// not when creating it.
parsedValue = CSSImageValue::create(m_styleSheet->completeURL(value->string));
m_valueList->next();
}
} else if (isGeneratedImageValue(value)) {
if (parseGeneratedImage(parsedValue))
m_valueList->next();
else
return false;
}
break;
case CSSPropertyWebkitTextStrokeWidth:
case CSSPropertyOutlineWidth: // <border-width> | inherit
case CSSPropertyBorderTopWidth: //// <border-width> | inherit
case CSSPropertyBorderRightWidth: // Which is defined as
case CSSPropertyBorderBottomWidth: // thin | medium | thick | <length>
case CSSPropertyBorderLeftWidth:
case CSSPropertyWebkitBorderStartWidth:
case CSSPropertyWebkitBorderEndWidth:
case CSSPropertyWebkitBorderBeforeWidth:
case CSSPropertyWebkitBorderAfterWidth:
case CSSPropertyWebkitColumnRuleWidth:
if (id == CSSValueThin || id == CSSValueMedium || id == CSSValueThick)
validPrimitive = true;
else
validPrimitive = validUnit(value, FLength | FNonNeg, m_strict);
break;
case CSSPropertyLetterSpacing: // normal | <length> | inherit
case CSSPropertyWordSpacing: // normal | <length> | inherit
if (id == CSSValueNormal)
validPrimitive = true;
else
validPrimitive = validUnit(value, FLength, m_strict);
break;
case CSSPropertyWordBreak: // normal | break-all | break-word (this is a custom extension)
if (id == CSSValueNormal || id == CSSValueBreakAll || id == CSSValueBreakWord)
validPrimitive = true;
break;
case CSSPropertyWordWrap: // normal | break-word
if (id == CSSValueNormal || id == CSSValueBreakWord)
validPrimitive = true;
break;
case CSSPropertySpeak: // none | normal | spell-out | digits | literal-punctuation | no-punctuation | inherit
if (id == CSSValueNone || id == CSSValueNormal || id == CSSValueSpellOut || id == CSSValueDigits
|| id == CSSValueLiteralPunctuation || id == CSSValueNoPunctuation)
validPrimitive = true;
break;
case CSSPropertyTextIndent: // <length> | <percentage> | inherit
validPrimitive = (!id && validUnit(value, FLength | FPercent, m_strict));
break;
case CSSPropertyPaddingTop: //// <padding-width> | inherit
case CSSPropertyPaddingRight: // Which is defined as
case CSSPropertyPaddingBottom: // <length> | <percentage>
case CSSPropertyPaddingLeft: ////
case CSSPropertyWebkitPaddingStart:
case CSSPropertyWebkitPaddingEnd:
case CSSPropertyWebkitPaddingBefore:
case CSSPropertyWebkitPaddingAfter:
validPrimitive = (!id && validUnit(value, FLength | FPercent | FNonNeg, m_strict));
break;
case CSSPropertyMaxHeight: // <length> | <percentage> | none | inherit
case CSSPropertyMaxWidth: // <length> | <percentage> | none | inherit
case CSSPropertyWebkitMaxLogicalWidth:
case CSSPropertyWebkitMaxLogicalHeight:
if (id == CSSValueNone || id == CSSValueIntrinsic || id == CSSValueMinIntrinsic) {
validPrimitive = true;
break;
}
/* nobreak */
case CSSPropertyMinHeight: // <length> | <percentage> | inherit
case CSSPropertyMinWidth: // <length> | <percentage> | inherit
case CSSPropertyWebkitMinLogicalWidth:
case CSSPropertyWebkitMinLogicalHeight:
if (id == CSSValueIntrinsic || id == CSSValueMinIntrinsic)
validPrimitive = true;
else
validPrimitive = (!id && validUnit(value, FLength | FPercent | FNonNeg, m_strict));
break;
case CSSPropertyFontSize:
// <absolute-size> | <relative-size> | <length> | <percentage> | inherit
if (id >= CSSValueXxSmall && id <= CSSValueLarger)
validPrimitive = true;
else
validPrimitive = (validUnit(value, FLength | FPercent | FNonNeg, m_strict));
break;
case CSSPropertyFontStyle: // normal | italic | oblique | inherit
return parseFontStyle(important);
case CSSPropertyFontVariant: // normal | small-caps | inherit
return parseFontVariant(important);
case CSSPropertyVerticalAlign:
// baseline | sub | super | top | text-top | middle | bottom | text-bottom |
// <percentage> | <length> | inherit
if (id >= CSSValueBaseline && id <= CSSValueWebkitBaselineMiddle)
validPrimitive = true;
else
validPrimitive = (!id && validUnit(value, FLength | FPercent, m_strict));
break;
case CSSPropertyHeight: // <length> | <percentage> | auto | inherit
case CSSPropertyWidth: // <length> | <percentage> | auto | inherit
case CSSPropertyWebkitLogicalWidth:
case CSSPropertyWebkitLogicalHeight:
if (id == CSSValueAuto || id == CSSValueIntrinsic || id == CSSValueMinIntrinsic)
validPrimitive = true;
else
// ### handle multilength case where we allow relative units
validPrimitive = (!id && validUnit(value, FLength | FPercent | FNonNeg, m_strict));
break;
case CSSPropertyBottom: // <length> | <percentage> | auto | inherit
case CSSPropertyLeft: // <length> | <percentage> | auto | inherit
case CSSPropertyRight: // <length> | <percentage> | auto | inherit
case CSSPropertyTop: // <length> | <percentage> | auto | inherit
case CSSPropertyMarginTop: //// <margin-width> | inherit
case CSSPropertyMarginRight: // Which is defined as
case CSSPropertyMarginBottom: // <length> | <percentage> | auto | inherit
case CSSPropertyMarginLeft: ////
case CSSPropertyWebkitMarginStart:
case CSSPropertyWebkitMarginEnd:
case CSSPropertyWebkitMarginBefore:
case CSSPropertyWebkitMarginAfter:
if (id == CSSValueAuto)
validPrimitive = true;
else
validPrimitive = (!id && validUnit(value, FLength | FPercent, m_strict));
break;
case CSSPropertyZIndex: // auto | <integer> | inherit
if (id == CSSValueAuto) {
validPrimitive = true;
break;
}
/* nobreak */
case CSSPropertyOrphans: // <integer> | inherit
case CSSPropertyWidows: // <integer> | inherit
// ### not supported later on
validPrimitive = (!id && validUnit(value, FInteger, false));
break;
case CSSPropertyLineHeight: // normal | <number> | <length> | <percentage> | inherit
if (id == CSSValueNormal)
validPrimitive = true;
else
validPrimitive = (!id && validUnit(value, FNumber | FLength | FPercent | FNonNeg, m_strict));
break;
case CSSPropertyCounterIncrement: // [ <identifier> <integer>? ]+ | none | inherit
if (id != CSSValueNone)
return parseCounter(propId, 1, important);
validPrimitive = true;
break;
case CSSPropertyCounterReset: // [ <identifier> <integer>? ]+ | none | inherit
if (id != CSSValueNone)
return parseCounter(propId, 0, important);
validPrimitive = true;
break;
case CSSPropertyFontFamily:
// [[ <family-name> | <generic-family> ],]* [<family-name> | <generic-family>] | inherit
{
parsedValue = parseFontFamily();
break;
}
case CSSPropertyTextDecoration:
case CSSPropertyWebkitTextDecorationsInEffect:
// none | [ underline || overline || line-through || blink ] | inherit
if (id == CSSValueNone) {
validPrimitive = true;
} else {
RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
bool isValid = true;
while (isValid && value) {
switch (value->id) {
case CSSValueBlink:
break;
case CSSValueUnderline:
case CSSValueOverline:
case CSSValueLineThrough:
list->append(primitiveValueCache()->createIdentifierValue(value->id));
break;
default:
isValid = false;
}
value = m_valueList->next();
}
if (list->length() && isValid) {
parsedValue = list.release();
m_valueList->next();
}
}
break;
case CSSPropertyZoom: // normal | reset | document | <number> | <percentage> | inherit
if (id == CSSValueNormal || id == CSSValueReset || id == CSSValueDocument)
validPrimitive = true;
else
validPrimitive = (!id && validUnit(value, FNumber | FPercent | FNonNeg, true));
break;
case CSSPropertyTableLayout: // auto | fixed | inherit
if (id == CSSValueAuto || id == CSSValueFixed)
validPrimitive = true;
break;
case CSSPropertySrc: // Only used within @font-face, so cannot use inherit | initial or be !important. This is a list of urls or local references.
return parseFontFaceSrc();
case CSSPropertyUnicodeRange:
return parseFontFaceUnicodeRange();
/* CSS3 properties */
case CSSPropertyWebkitAppearance:
if ((id >= CSSValueCheckbox && id <= CSSValueTextarea) || id == CSSValueNone)
validPrimitive = true;
break;
case CSSPropertyWebkitBorderImage:
case CSSPropertyWebkitMaskBoxImage:
if (id == CSSValueNone)
validPrimitive = true;
else {
RefPtr<CSSValue> result;
if (parseBorderImage(propId, important, result)) {
addProperty(propId, result, important);
return true;
}
}
break;
case CSSPropertyBorderTopRightRadius:
case CSSPropertyBorderTopLeftRadius:
case CSSPropertyBorderBottomLeftRadius:
case CSSPropertyBorderBottomRightRadius: {
if (num != 1 && num != 2)
return false;
validPrimitive = validUnit(value, FLength | FPercent, m_strict);
if (!validPrimitive)
return false;
RefPtr<CSSPrimitiveValue> parsedValue1 = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
RefPtr<CSSPrimitiveValue> parsedValue2;
if (num == 2) {
value = m_valueList->next();
validPrimitive = validUnit(value, FLength | FPercent, m_strict);
if (!validPrimitive)
return false;
parsedValue2 = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
} else
parsedValue2 = parsedValue1;
RefPtr<Pair> pair = Pair::create(parsedValue1.release(), parsedValue2.release());
RefPtr<CSSPrimitiveValue> val = primitiveValueCache()->createValue(pair.release());
addProperty(propId, val.release(), important);
return true;
}
case CSSPropertyBorderRadius:
case CSSPropertyWebkitBorderRadius:
return parseBorderRadius(propId, important);
case CSSPropertyOutlineOffset:
validPrimitive = validUnit(value, FLength | FPercent, m_strict);
break;
case CSSPropertyTextShadow: // CSS2 property, dropped in CSS2.1, back in CSS3, so treat as CSS3
case CSSPropertyBoxShadow:
case CSSPropertyWebkitBoxShadow:
if (id == CSSValueNone)
validPrimitive = true;
else
return parseShadow(propId, important);
break;
case CSSPropertyWebkitBoxReflect:
if (id == CSSValueNone)
validPrimitive = true;
else
return parseReflect(propId, important);
break;
case CSSPropertyOpacity:
validPrimitive = validUnit(value, FNumber, m_strict);
break;
case CSSPropertyWebkitBoxAlign:
if (id == CSSValueStretch || id == CSSValueStart || id == CSSValueEnd ||
id == CSSValueCenter || id == CSSValueBaseline)
validPrimitive = true;
break;
case CSSPropertyWebkitBoxDirection:
if (id == CSSValueNormal || id == CSSValueReverse)
validPrimitive = true;
break;
case CSSPropertyWebkitBoxLines:
if (id == CSSValueSingle || id == CSSValueMultiple)
validPrimitive = true;
break;
case CSSPropertyWebkitBoxOrient:
if (id == CSSValueHorizontal || id == CSSValueVertical ||
id == CSSValueInlineAxis || id == CSSValueBlockAxis)
validPrimitive = true;
break;
case CSSPropertyWebkitBoxPack:
if (id == CSSValueStart || id == CSSValueEnd ||
id == CSSValueCenter || id == CSSValueJustify)
validPrimitive = true;
break;
case CSSPropertyWebkitBoxFlex:
validPrimitive = validUnit(value, FNumber, m_strict);
break;
case CSSPropertyWebkitBoxFlexGroup:
case CSSPropertyWebkitBoxOrdinalGroup:
validPrimitive = validUnit(value, FInteger | FNonNeg, true);
break;
case CSSPropertyBoxSizing:
validPrimitive = id == CSSValueBorderBox || id == CSSValueContentBox;
break;
case CSSPropertyWebkitColorCorrection:
validPrimitive = id == CSSValueSrgb || id == CSSValueDefault;
break;
case CSSPropertyWebkitMarquee: {
const int properties[5] = { CSSPropertyWebkitMarqueeDirection, CSSPropertyWebkitMarqueeIncrement,
CSSPropertyWebkitMarqueeRepetition,
CSSPropertyWebkitMarqueeStyle, CSSPropertyWebkitMarqueeSpeed };
return parseShorthand(propId, properties, 5, important);
}
case CSSPropertyWebkitMarqueeDirection:
if (id == CSSValueForwards || id == CSSValueBackwards || id == CSSValueAhead ||
id == CSSValueReverse || id == CSSValueLeft || id == CSSValueRight || id == CSSValueDown ||
id == CSSValueUp || id == CSSValueAuto)
validPrimitive = true;
break;
case CSSPropertyWebkitMarqueeIncrement:
if (id == CSSValueSmall || id == CSSValueLarge || id == CSSValueMedium)
validPrimitive = true;
else
validPrimitive = validUnit(value, FLength | FPercent, m_strict);
break;
case CSSPropertyWebkitMarqueeStyle:
if (id == CSSValueNone || id == CSSValueSlide || id == CSSValueScroll || id == CSSValueAlternate)
validPrimitive = true;
break;
case CSSPropertyWebkitMarqueeRepetition:
if (id == CSSValueInfinite)
validPrimitive = true;
else
validPrimitive = validUnit(value, FInteger | FNonNeg, m_strict);
break;
case CSSPropertyWebkitMarqueeSpeed:
if (id == CSSValueNormal || id == CSSValueSlow || id == CSSValueFast)
validPrimitive = true;
else
validPrimitive = validUnit(value, FTime | FInteger | FNonNeg, m_strict);
break;
#if ENABLE(WCSS)
case CSSPropertyWapMarqueeDir:
if (id == CSSValueLtr || id == CSSValueRtl)
validPrimitive = true;
break;
case CSSPropertyWapMarqueeStyle:
if (id == CSSValueNone || id == CSSValueSlide || id == CSSValueScroll || id == CSSValueAlternate)
validPrimitive = true;
break;
case CSSPropertyWapMarqueeLoop:
if (id == CSSValueInfinite)
validPrimitive = true;
else
validPrimitive = validUnit(value, FInteger | FNonNeg, m_strict);
break;
case CSSPropertyWapMarqueeSpeed:
if (id == CSSValueNormal || id == CSSValueSlow || id == CSSValueFast)
validPrimitive = true;
else
validPrimitive = validUnit(value, FTime | FInteger | FNonNeg, m_strict);
break;
#endif
case CSSPropertyWebkitUserDrag: // auto | none | element
if (id == CSSValueAuto || id == CSSValueNone || id == CSSValueElement)
validPrimitive = true;
break;
case CSSPropertyWebkitUserModify: // read-only | read-write
if (id == CSSValueReadOnly || id == CSSValueReadWrite || id == CSSValueReadWritePlaintextOnly)
validPrimitive = true;
break;
case CSSPropertyWebkitUserSelect: // auto | none | text
if (id == CSSValueAuto || id == CSSValueNone || id == CSSValueText)
validPrimitive = true;
break;
case CSSPropertyTextOverflow: // clip | ellipsis
if (id == CSSValueClip || id == CSSValueEllipsis)
validPrimitive = true;
break;
case CSSPropertyWebkitTransform:
if (id == CSSValueNone)
validPrimitive = true;
else {
PassRefPtr<CSSValue> val = parseTransform();
if (val) {
addProperty(propId, val, important);
return true;
}
return false;
}
break;
case CSSPropertyWebkitTransformOrigin:
case CSSPropertyWebkitTransformOriginX:
case CSSPropertyWebkitTransformOriginY:
case CSSPropertyWebkitTransformOriginZ: {
RefPtr<CSSValue> val1;
RefPtr<CSSValue> val2;
RefPtr<CSSValue> val3;
int propId1, propId2, propId3;
if (parseTransformOrigin(propId, propId1, propId2, propId3, val1, val2, val3)) {
addProperty(propId1, val1.release(), important);
if (val2)
addProperty(propId2, val2.release(), important);
if (val3)
addProperty(propId3, val3.release(), important);
return true;
}
return false;
}
case CSSPropertyWebkitTransformStyle:
if (value->id == CSSValueFlat || value->id == CSSValuePreserve3d)
validPrimitive = true;
break;
case CSSPropertyWebkitBackfaceVisibility:
if (value->id == CSSValueVisible || value->id == CSSValueHidden)
validPrimitive = true;
break;
case CSSPropertyWebkitPerspective:
if (id == CSSValueNone)
validPrimitive = true;
else {
// Accepting valueless numbers is a quirk of the -webkit prefixed version of the property.
if (validUnit(value, FNumber | FLength | FNonNeg, m_strict)) {
RefPtr<CSSValue> val = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
if (val) {
addProperty(propId, val.release(), important);
return true;
}
return false;
}
}
break;
case CSSPropertyWebkitPerspectiveOrigin:
case CSSPropertyWebkitPerspectiveOriginX:
case CSSPropertyWebkitPerspectiveOriginY: {
RefPtr<CSSValue> val1;
RefPtr<CSSValue> val2;
int propId1, propId2;
if (parsePerspectiveOrigin(propId, propId1, propId2, val1, val2)) {
addProperty(propId1, val1.release(), important);
if (val2)
addProperty(propId2, val2.release(), important);
return true;
}
return false;
}
case CSSPropertyWebkitAnimationDelay:
case CSSPropertyWebkitAnimationDirection:
case CSSPropertyWebkitAnimationDuration:
case CSSPropertyWebkitAnimationFillMode:
case CSSPropertyWebkitAnimationName:
case CSSPropertyWebkitAnimationPlayState:
case CSSPropertyWebkitAnimationIterationCount:
case CSSPropertyWebkitAnimationTimingFunction:
case CSSPropertyWebkitTransitionDelay:
case CSSPropertyWebkitTransitionDuration:
case CSSPropertyWebkitTransitionTimingFunction:
case CSSPropertyWebkitTransitionProperty: {
RefPtr<CSSValue> val;
if (parseAnimationProperty(propId, val)) {
addProperty(propId, val.release(), important);
return true;
}
return false;
}
case CSSPropertyWebkitMarginCollapse: {
const int properties[2] = { CSSPropertyWebkitMarginBeforeCollapse,
CSSPropertyWebkitMarginAfterCollapse };
if (num == 1) {
ShorthandScope scope(this, CSSPropertyWebkitMarginCollapse);
if (!parseValue(properties[0], important))
return false;
CSSValue* value = m_parsedProperties[m_numParsedProperties-1]->value();
addProperty(properties[1], value, important);
return true;
}
else if (num == 2) {
ShorthandScope scope(this, CSSPropertyWebkitMarginCollapse);
if (!parseValue(properties[0], important) || !parseValue(properties[1], important))
return false;
return true;
}
return false;
}
case CSSPropertyWebkitMarginBeforeCollapse:
case CSSPropertyWebkitMarginAfterCollapse:
case CSSPropertyWebkitMarginTopCollapse:
case CSSPropertyWebkitMarginBottomCollapse:
if (id == CSSValueCollapse || id == CSSValueSeparate || id == CSSValueDiscard)
validPrimitive = true;
break;
case CSSPropertyTextLineThroughMode:
case CSSPropertyTextOverlineMode:
case CSSPropertyTextUnderlineMode:
if (id == CSSValueContinuous || id == CSSValueSkipWhiteSpace)
validPrimitive = true;
break;
case CSSPropertyTextLineThroughStyle:
case CSSPropertyTextOverlineStyle:
case CSSPropertyTextUnderlineStyle:
if (id == CSSValueNone || id == CSSValueSolid || id == CSSValueDouble ||
id == CSSValueDashed || id == CSSValueDotDash || id == CSSValueDotDotDash ||
id == CSSValueWave)
validPrimitive = true;
break;
case CSSPropertyTextRendering: // auto | optimizeSpeed | optimizeLegibility | geometricPrecision
if (id == CSSValueAuto || id == CSSValueOptimizespeed || id == CSSValueOptimizelegibility
|| id == CSSValueGeometricprecision)
validPrimitive = true;
break;
case CSSPropertyTextLineThroughWidth:
case CSSPropertyTextOverlineWidth:
case CSSPropertyTextUnderlineWidth:
if (id == CSSValueAuto || id == CSSValueNormal || id == CSSValueThin ||
id == CSSValueMedium || id == CSSValueThick)
validPrimitive = true;
else
validPrimitive = !id && validUnit(value, FNumber | FLength | FPercent, m_strict);
break;
case CSSPropertyResize: // none | both | horizontal | vertical | auto
if (id == CSSValueNone || id == CSSValueBoth || id == CSSValueHorizontal || id == CSSValueVertical || id == CSSValueAuto)
validPrimitive = true;
break;
case CSSPropertyWebkitColumnCount:
if (id == CSSValueAuto)
validPrimitive = true;
else
validPrimitive = !id && validUnit(value, FInteger | FNonNeg, false);
break;
case CSSPropertyWebkitColumnGap: // normal | <length>
if (id == CSSValueNormal)
validPrimitive = true;
else
validPrimitive = validUnit(value, FLength | FNonNeg, m_strict);
break;
case CSSPropertyWebkitColumnSpan: // all | 1
if (id == CSSValueAll)
validPrimitive = true;
else
validPrimitive = validUnit(value, FNumber | FNonNeg, m_strict) && value->fValue == 1;
break;
case CSSPropertyWebkitColumnWidth: // auto | <length>
if (id == CSSValueAuto)
validPrimitive = true;
else // Always parse this property in strict mode, since it would be ambiguous otherwise when used in the 'columns' shorthand property.
validPrimitive = validUnit(value, FLength, true);
break;
case CSSPropertyPointerEvents:
// none | visiblePainted | visibleFill | visibleStroke | visible |
// painted | fill | stroke | auto | all | inherit
if (id == CSSValueVisible || id == CSSValueNone || id == CSSValueAll || id == CSSValueAuto ||
(id >= CSSValueVisiblepainted && id <= CSSValueStroke))
validPrimitive = true;
break;
// End of CSS3 properties
// Apple specific properties. These will never be standardized and are purely to
// support custom WebKit-based Apple applications.
case CSSPropertyWebkitLineClamp:
// When specifying number of lines, don't allow 0 as a valid value
// When specifying either type of unit, require non-negative integers
validPrimitive = (!id && (value->unit == CSSPrimitiveValue::CSS_PERCENTAGE || value->fValue) && validUnit(value, FInteger | FPercent | FNonNeg, false));
break;
case CSSPropertyWebkitTextSizeAdjust:
if (id == CSSValueAuto || id == CSSValueNone)
validPrimitive = true;
break;
case CSSPropertyWebkitRtlOrdering:
if (id == CSSValueLogical || id == CSSValueVisual)
validPrimitive = true;
break;
case CSSPropertyWebkitFontSizeDelta: // <length>
validPrimitive = validUnit(value, FLength, m_strict);
break;
case CSSPropertyWebkitNbspMode: // normal | space
if (id == CSSValueNormal || id == CSSValueSpace)
validPrimitive = true;
break;
case CSSPropertyWebkitLineBreak: // normal | after-white-space
if (id == CSSValueNormal || id == CSSValueAfterWhiteSpace)
validPrimitive = true;
break;
case CSSPropertyWebkitMatchNearestMailBlockquoteColor: // normal | match
if (id == CSSValueNormal || id == CSSValueMatch)
validPrimitive = true;
break;
case CSSPropertyWebkitHighlight:
if (id == CSSValueNone || value->unit == CSSPrimitiveValue::CSS_STRING)
validPrimitive = true;
break;
case CSSPropertyWebkitHyphens:
if (id == CSSValueNone || id == CSSValueManual || id == CSSValueAuto)
validPrimitive = true;
break;
case CSSPropertyWebkitHyphenateCharacter:
if (id == CSSValueAuto || value->unit == CSSPrimitiveValue::CSS_STRING)
validPrimitive = true;
break;
case CSSPropertyWebkitHyphenateLimitBefore:
case CSSPropertyWebkitHyphenateLimitAfter:
if (id == CSSValueAuto || validUnit(value, FInteger | FNonNeg, true))
validPrimitive = true;
break;
case CSSPropertyWebkitLocale:
if (id == CSSValueAuto || value->unit == CSSPrimitiveValue::CSS_STRING)
validPrimitive = true;
break;
case CSSPropertyWebkitBorderFit:
if (id == CSSValueBorder || id == CSSValueLines)
validPrimitive = true;
break;
case CSSPropertyWebkitTextSecurity:
// disc | circle | square | none | inherit
if (id == CSSValueDisc || id == CSSValueCircle || id == CSSValueSquare|| id == CSSValueNone)
validPrimitive = true;
break;
case CSSPropertyWebkitFontSmoothing:
if (id == CSSValueAuto || id == CSSValueNone
|| id == CSSValueAntialiased || id == CSSValueSubpixelAntialiased)
validPrimitive = true;
break;
#if ENABLE(DASHBOARD_SUPPORT)
case CSSPropertyWebkitDashboardRegion: // <dashboard-region> | <dashboard-region>
if (value->unit == CSSParserValue::Function || id == CSSValueNone)
return parseDashboardRegions(propId, important);
break;
#endif
// End Apple-specific properties
/* shorthand properties */
case CSSPropertyBackground: {
// Position must come before color in this array because a plain old "0" is a legal color
// in quirks mode but it's usually the X coordinate of a position.
// FIXME: Add CSSPropertyBackgroundSize to the shorthand.
const int properties[] = { CSSPropertyBackgroundImage, CSSPropertyBackgroundRepeat,
CSSPropertyBackgroundAttachment, CSSPropertyBackgroundPosition, CSSPropertyBackgroundOrigin,
CSSPropertyBackgroundClip, CSSPropertyBackgroundColor };
return parseFillShorthand(propId, properties, 7, important);
}
case CSSPropertyWebkitMask: {
const int properties[] = { CSSPropertyWebkitMaskImage, CSSPropertyWebkitMaskRepeat,
CSSPropertyWebkitMaskAttachment, CSSPropertyWebkitMaskPosition,
CSSPropertyWebkitMaskOrigin, CSSPropertyWebkitMaskClip };
return parseFillShorthand(propId, properties, 6, important);
}
case CSSPropertyBorder:
// [ 'border-width' || 'border-style' || <color> ] | inherit
{
const int properties[3] = { CSSPropertyBorderWidth, CSSPropertyBorderStyle,
CSSPropertyBorderColor };
return parseShorthand(propId, properties, 3, important);
}
case CSSPropertyBorderTop:
// [ 'border-top-width' || 'border-style' || <color> ] | inherit
{
const int properties[3] = { CSSPropertyBorderTopWidth, CSSPropertyBorderTopStyle,
CSSPropertyBorderTopColor};
return parseShorthand(propId, properties, 3, important);
}
case CSSPropertyBorderRight:
// [ 'border-right-width' || 'border-style' || <color> ] | inherit
{
const int properties[3] = { CSSPropertyBorderRightWidth, CSSPropertyBorderRightStyle,
CSSPropertyBorderRightColor };
return parseShorthand(propId, properties, 3, important);
}
case CSSPropertyBorderBottom:
// [ 'border-bottom-width' || 'border-style' || <color> ] | inherit
{
const int properties[3] = { CSSPropertyBorderBottomWidth, CSSPropertyBorderBottomStyle,
CSSPropertyBorderBottomColor };
return parseShorthand(propId, properties, 3, important);
}
case CSSPropertyBorderLeft:
// [ 'border-left-width' || 'border-style' || <color> ] | inherit
{
const int properties[3] = { CSSPropertyBorderLeftWidth, CSSPropertyBorderLeftStyle,
CSSPropertyBorderLeftColor };
return parseShorthand(propId, properties, 3, important);
}
case CSSPropertyWebkitBorderStart:
{
const int properties[3] = { CSSPropertyWebkitBorderStartWidth, CSSPropertyWebkitBorderStartStyle,
CSSPropertyWebkitBorderStartColor };
return parseShorthand(propId, properties, 3, important);
}
case CSSPropertyWebkitBorderEnd:
{
const int properties[3] = { CSSPropertyWebkitBorderEndWidth, CSSPropertyWebkitBorderEndStyle,
CSSPropertyWebkitBorderEndColor };
return parseShorthand(propId, properties, 3, important);
}
case CSSPropertyWebkitBorderBefore:
{
const int properties[3] = { CSSPropertyWebkitBorderBeforeWidth, CSSPropertyWebkitBorderBeforeStyle,
CSSPropertyWebkitBorderBeforeColor };
return parseShorthand(propId, properties, 3, important);
}
case CSSPropertyWebkitBorderAfter:
{
const int properties[3] = { CSSPropertyWebkitBorderAfterWidth, CSSPropertyWebkitBorderAfterStyle,
CSSPropertyWebkitBorderAfterColor };
return parseShorthand(propId, properties, 3, important);
}
case CSSPropertyOutline:
// [ 'outline-color' || 'outline-style' || 'outline-width' ] | inherit
{
const int properties[3] = { CSSPropertyOutlineWidth, CSSPropertyOutlineStyle,
CSSPropertyOutlineColor };
return parseShorthand(propId, properties, 3, important);
}
case CSSPropertyBorderColor:
// <color>{1,4} | inherit
{
const int properties[4] = { CSSPropertyBorderTopColor, CSSPropertyBorderRightColor,
CSSPropertyBorderBottomColor, CSSPropertyBorderLeftColor };
return parse4Values(propId, properties, important);
}
case CSSPropertyBorderWidth:
// <border-width>{1,4} | inherit
{
const int properties[4] = { CSSPropertyBorderTopWidth, CSSPropertyBorderRightWidth,
CSSPropertyBorderBottomWidth, CSSPropertyBorderLeftWidth };
return parse4Values(propId, properties, important);
}
case CSSPropertyBorderStyle:
// <border-style>{1,4} | inherit
{
const int properties[4] = { CSSPropertyBorderTopStyle, CSSPropertyBorderRightStyle,
CSSPropertyBorderBottomStyle, CSSPropertyBorderLeftStyle };
return parse4Values(propId, properties, important);
}
case CSSPropertyMargin:
// <margin-width>{1,4} | inherit
{
const int properties[4] = { CSSPropertyMarginTop, CSSPropertyMarginRight,
CSSPropertyMarginBottom, CSSPropertyMarginLeft };
return parse4Values(propId, properties, important);
}
case CSSPropertyPadding:
// <padding-width>{1,4} | inherit
{
const int properties[4] = { CSSPropertyPaddingTop, CSSPropertyPaddingRight,
CSSPropertyPaddingBottom, CSSPropertyPaddingLeft };
return parse4Values(propId, properties, important);
}
case CSSPropertyFont:
// [ [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]?
// 'font-family' ] | caption | icon | menu | message-box | small-caption | status-bar | inherit
if (id >= CSSValueCaption && id <= CSSValueStatusBar)
validPrimitive = true;
else
return parseFont(important);
break;
case CSSPropertyListStyle:
{
const int properties[3] = { CSSPropertyListStyleType, CSSPropertyListStylePosition,
CSSPropertyListStyleImage };
return parseShorthand(propId, properties, 3, important);
}
case CSSPropertyWebkitColumns: {
const int properties[2] = { CSSPropertyWebkitColumnWidth, CSSPropertyWebkitColumnCount };
return parseShorthand(propId, properties, 2, important);
}
case CSSPropertyWebkitColumnRule: {
const int properties[3] = { CSSPropertyWebkitColumnRuleWidth, CSSPropertyWebkitColumnRuleStyle,
CSSPropertyWebkitColumnRuleColor };
return parseShorthand(propId, properties, 3, important);
}
case CSSPropertyWebkitTextStroke: {
const int properties[2] = { CSSPropertyWebkitTextStrokeWidth, CSSPropertyWebkitTextStrokeColor };
return parseShorthand(propId, properties, 2, important);
}
case CSSPropertyWebkitAnimation:
return parseAnimationShorthand(important);
case CSSPropertyWebkitTransition:
return parseTransitionShorthand(important);
case CSSPropertyInvalid:
return false;
case CSSPropertyPage:
return parsePage(propId, important);
case CSSPropertyFontStretch:
case CSSPropertyTextLineThrough:
case CSSPropertyTextOverline:
case CSSPropertyTextUnderline:
return false;
#if ENABLE(WCSS)
case CSSPropertyWapInputFormat:
validPrimitive = true;
break;
case CSSPropertyWapInputRequired:
parsedValue = parseWCSSInputProperty();
break;
#endif
// CSS Text Layout Module Level 3: Vertical writing support
case CSSPropertyWebkitWritingMode:
if (id >= CSSValueHorizontalTb && id <= CSSValueHorizontalBt)
validPrimitive = true;
break;
case CSSPropertyWebkitTextCombine:
if (id == CSSValueNone || id == CSSValueHorizontal)
validPrimitive = true;
break;
case CSSPropertyWebkitTextEmphasis: {
const int properties[] = { CSSPropertyWebkitTextEmphasisStyle, CSSPropertyWebkitTextEmphasisColor };
return parseShorthand(propId, properties, WTF_ARRAY_LENGTH(properties), important);
}
case CSSPropertyWebkitTextEmphasisPosition:
if (id == CSSValueOver || id == CSSValueUnder)
validPrimitive = true;
break;
case CSSPropertyWebkitTextEmphasisStyle:
return parseTextEmphasisStyle(important);
case CSSPropertyWebkitTextOrientation:
// FIXME: For now just support upright and vertical-right.
if (id == CSSValueVerticalRight || id == CSSValueUpright)
validPrimitive = true;
break;
case CSSPropertyWebkitLineBoxContain:
if (id == CSSValueNone)
validPrimitive = true;
else
return parseLineBoxContain(important);
break;
#ifdef ANDROID_CSS_RING
case CSSPropertyWebkitRing:
{
const int properties[9] = { CSSPropertyWebkitRingFillColor,
CSSPropertyWebkitRingInnerWidth,
CSSPropertyWebkitRingOuterWidth,
CSSPropertyWebkitRingOutset,
CSSPropertyWebkitRingPressedInnerColor,
CSSPropertyWebkitRingPressedOuterColor,
CSSPropertyWebkitRingRadius,
CSSPropertyWebkitRingSelectedInnerColor,
CSSPropertyWebkitRingSelectedOuterColor };
return parseShorthand(propId, properties, 9, important);
}
case CSSPropertyWebkitRingFillColor:
case CSSPropertyWebkitRingPressedInnerColor:
case CSSPropertyWebkitRingPressedOuterColor:
case CSSPropertyWebkitRingSelectedInnerColor:
case CSSPropertyWebkitRingSelectedOuterColor:
parsedValue = parseColor();
if (parsedValue)
m_valueList->next();
break;
case CSSPropertyWebkitRingInnerWidth:
case CSSPropertyWebkitRingOuterWidth:
case CSSPropertyWebkitRingOutset:
case CSSPropertyWebkitRingRadius:
validPrimitive = validUnit(value, FLength | FNonNeg, m_strict);
break;
#endif
#ifdef ANDROID_CSS_TAP_HIGHLIGHT_COLOR
case CSSPropertyWebkitTapHighlightColor:
parsedValue = parseColor();
if (parsedValue)
m_valueList->next();
break;
#endif
#if ENABLE(SVG)
default:
return parseSVGValue(propId, important);
#endif
}
if (validPrimitive) {
if (id != 0)
parsedValue = primitiveValueCache()->createIdentifierValue(id);
else if (value->unit == CSSPrimitiveValue::CSS_STRING)
parsedValue = primitiveValueCache()->createValue(value->string, (CSSPrimitiveValue::UnitTypes) value->unit);
else if (value->unit >= CSSPrimitiveValue::CSS_NUMBER && value->unit <= CSSPrimitiveValue::CSS_KHZ)
parsedValue = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit);
else if (value->unit >= CSSPrimitiveValue::CSS_TURN && value->unit <= CSSPrimitiveValue::CSS_REMS)
parsedValue = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit);
else if (value->unit >= CSSParserValue::Q_EMS)
parsedValue = CSSQuirkPrimitiveValue::create(value->fValue, CSSPrimitiveValue::CSS_EMS);
m_valueList->next();
}
if (parsedValue) {
if (!m_valueList->current() || inShorthand()) {
addProperty(propId, parsedValue.release(), important);
return true;
}
}
return false;
}
#if ENABLE(WCSS)
PassRefPtr<CSSValue> CSSParser::parseWCSSInputProperty()
{
RefPtr<CSSValue> parsedValue = 0;
CSSParserValue* value = m_valueList->current();
String inputProperty;
if (value->unit == CSSPrimitiveValue::CSS_STRING || value->unit == CSSPrimitiveValue::CSS_IDENT)
inputProperty = String(value->string);
if (!inputProperty.isEmpty())
parsedValue = primitiveValueCache()->createValue(inputProperty, CSSPrimitiveValue::CSS_STRING);
while (m_valueList->next()) {
// pass all other values, if any. If we don't do this,
// the parser will think that it's not done and won't process this property
}
return parsedValue;
}
#endif
void CSSParser::addFillValue(RefPtr<CSSValue>& lval, PassRefPtr<CSSValue> rval)
{
if (lval) {
if (lval->isValueList())
static_cast<CSSValueList*>(lval.get())->append(rval);
else {
PassRefPtr<CSSValue> oldlVal(lval.release());
PassRefPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
list->append(oldlVal);
list->append(rval);
lval = list;
}
}
else
lval = rval;
}
static bool parseBackgroundClip(CSSParserValue* parserValue, RefPtr<CSSValue>& cssValue, CSSPrimitiveValueCache* primitiveValueCache)
{
if (parserValue->id == CSSValueBorderBox || parserValue->id == CSSValuePaddingBox
|| parserValue->id == CSSValueContentBox || parserValue->id == CSSValueWebkitText) {
cssValue = primitiveValueCache->createIdentifierValue(parserValue->id);
return true;
}
return false;
}
const int cMaxFillProperties = 9;
bool CSSParser::parseFillShorthand(int propId, const int* properties, int numProperties, bool important)
{
ASSERT(numProperties <= cMaxFillProperties);
if (numProperties > cMaxFillProperties)
return false;
ShorthandScope scope(this, propId);
bool parsedProperty[cMaxFillProperties] = { false };
RefPtr<CSSValue> values[cMaxFillProperties];
RefPtr<CSSValue> clipValue;
RefPtr<CSSValue> positionYValue;
RefPtr<CSSValue> repeatYValue;
bool foundClip = false;
int i;
while (m_valueList->current()) {
CSSParserValue* val = m_valueList->current();
if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
// We hit the end. Fill in all remaining values with the initial value.
m_valueList->next();
for (i = 0; i < numProperties; ++i) {
if (properties[i] == CSSPropertyBackgroundColor && parsedProperty[i])
// Color is not allowed except as the last item in a list for backgrounds.
// Reject the entire property.
return false;
if (!parsedProperty[i] && properties[i] != CSSPropertyBackgroundColor) {
addFillValue(values[i], CSSInitialValue::createImplicit());
if (properties[i] == CSSPropertyBackgroundPosition || properties[i] == CSSPropertyWebkitMaskPosition)
addFillValue(positionYValue, CSSInitialValue::createImplicit());
if (properties[i] == CSSPropertyBackgroundRepeat || properties[i] == CSSPropertyWebkitMaskRepeat)
addFillValue(repeatYValue, CSSInitialValue::createImplicit());
if ((properties[i] == CSSPropertyBackgroundOrigin || properties[i] == CSSPropertyWebkitMaskOrigin) && !parsedProperty[i]) {
// If background-origin wasn't present, then reset background-clip also.
addFillValue(clipValue, CSSInitialValue::createImplicit());
}
}
parsedProperty[i] = false;
}
if (!m_valueList->current())
break;
}
bool found = false;
for (i = 0; !found && i < numProperties; ++i) {
if (!parsedProperty[i]) {
RefPtr<CSSValue> val1;
RefPtr<CSSValue> val2;
int propId1, propId2;
CSSParserValue* parserValue = m_valueList->current();
if (parseFillProperty(properties[i], propId1, propId2, val1, val2)) {
parsedProperty[i] = found = true;
addFillValue(values[i], val1.release());
if (properties[i] == CSSPropertyBackgroundPosition || properties[i] == CSSPropertyWebkitMaskPosition)
addFillValue(positionYValue, val2.release());
if (properties[i] == CSSPropertyBackgroundRepeat || properties[i] == CSSPropertyWebkitMaskRepeat)
addFillValue(repeatYValue, val2.release());
if (properties[i] == CSSPropertyBackgroundOrigin || properties[i] == CSSPropertyWebkitMaskOrigin) {
// Reparse the value as a clip, and see if we succeed.
if (parseBackgroundClip(parserValue, val1, primitiveValueCache()))
addFillValue(clipValue, val1.release()); // The property parsed successfully.
else
addFillValue(clipValue, CSSInitialValue::createImplicit()); // Some value was used for origin that is not supported by clip. Just reset clip instead.
}
if (properties[i] == CSSPropertyBackgroundClip || properties[i] == CSSPropertyWebkitMaskClip) {
// Update clipValue
addFillValue(clipValue, val1.release());
foundClip = true;
}
}
}
}
// if we didn't find at least one match, this is an
// invalid shorthand and we have to ignore it
if (!found)
return false;
}
// Fill in any remaining properties with the initial value.
for (i = 0; i < numProperties; ++i) {
if (!parsedProperty[i]) {
addFillValue(values[i], CSSInitialValue::createImplicit());
if (properties[i] == CSSPropertyBackgroundPosition || properties[i] == CSSPropertyWebkitMaskPosition)
addFillValue(positionYValue, CSSInitialValue::createImplicit());
if (properties[i] == CSSPropertyBackgroundRepeat || properties[i] == CSSPropertyWebkitMaskRepeat)
addFillValue(repeatYValue, CSSInitialValue::createImplicit());
if ((properties[i] == CSSPropertyBackgroundOrigin || properties[i] == CSSPropertyWebkitMaskOrigin) && !parsedProperty[i]) {
// If background-origin wasn't present, then reset background-clip also.
addFillValue(clipValue, CSSInitialValue::createImplicit());
}
}
}
// Now add all of the properties we found.
for (i = 0; i < numProperties; i++) {
if (properties[i] == CSSPropertyBackgroundPosition) {
addProperty(CSSPropertyBackgroundPositionX, values[i].release(), important);
// it's OK to call positionYValue.release() since we only see CSSPropertyBackgroundPosition once
addProperty(CSSPropertyBackgroundPositionY, positionYValue.release(), important);
} else if (properties[i] == CSSPropertyWebkitMaskPosition) {
addProperty(CSSPropertyWebkitMaskPositionX, values[i].release(), important);
// it's OK to call positionYValue.release() since we only see CSSPropertyWebkitMaskPosition once
addProperty(CSSPropertyWebkitMaskPositionY, positionYValue.release(), important);
} else if (properties[i] == CSSPropertyBackgroundRepeat) {
addProperty(CSSPropertyBackgroundRepeatX, values[i].release(), important);
// it's OK to call repeatYValue.release() since we only see CSSPropertyBackgroundPosition once
addProperty(CSSPropertyBackgroundRepeatY, repeatYValue.release(), important);
} else if (properties[i] == CSSPropertyWebkitMaskRepeat) {
addProperty(CSSPropertyWebkitMaskRepeatX, values[i].release(), important);
// it's OK to call repeatYValue.release() since we only see CSSPropertyBackgroundPosition once
addProperty(CSSPropertyWebkitMaskRepeatY, repeatYValue.release(), important);
} else if ((properties[i] == CSSPropertyBackgroundClip || properties[i] == CSSPropertyWebkitMaskClip) && !foundClip)
// Value is already set while updating origin
continue;
else
addProperty(properties[i], values[i].release(), important);
// Add in clip values when we hit the corresponding origin property.
if (properties[i] == CSSPropertyBackgroundOrigin && !foundClip)
addProperty(CSSPropertyBackgroundClip, clipValue.release(), important);
else if (properties[i] == CSSPropertyWebkitMaskOrigin && !foundClip)
addProperty(CSSPropertyWebkitMaskClip, clipValue.release(), important);
}
return true;
}
void CSSParser::addAnimationValue(RefPtr<CSSValue>& lval, PassRefPtr<CSSValue> rval)
{
if (lval) {
if (lval->isValueList())
static_cast<CSSValueList*>(lval.get())->append(rval);
else {
PassRefPtr<CSSValue> oldVal(lval.release());
PassRefPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
list->append(oldVal);
list->append(rval);
lval = list;
}
}
else
lval = rval;
}
bool CSSParser::parseAnimationShorthand(bool important)
{
const int properties[] = { CSSPropertyWebkitAnimationName,
CSSPropertyWebkitAnimationDuration,
CSSPropertyWebkitAnimationTimingFunction,
CSSPropertyWebkitAnimationDelay,
CSSPropertyWebkitAnimationIterationCount,
CSSPropertyWebkitAnimationDirection,
CSSPropertyWebkitAnimationFillMode };
const int numProperties = WTF_ARRAY_LENGTH(properties);
ShorthandScope scope(this, CSSPropertyWebkitAnimation);
bool parsedProperty[numProperties] = { false }; // compiler will repeat false as necessary
RefPtr<CSSValue> values[numProperties];
int i;
while (m_valueList->current()) {
CSSParserValue* val = m_valueList->current();
if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
// We hit the end. Fill in all remaining values with the initial value.
m_valueList->next();
for (i = 0; i < numProperties; ++i) {
if (!parsedProperty[i])
addAnimationValue(values[i], CSSInitialValue::createImplicit());
parsedProperty[i] = false;
}
if (!m_valueList->current())
break;
}
bool found = false;
for (i = 0; !found && i < numProperties; ++i) {
if (!parsedProperty[i]) {
RefPtr<CSSValue> val;
if (parseAnimationProperty(properties[i], val)) {
parsedProperty[i] = found = true;
addAnimationValue(values[i], val.release());
}
}
}
// if we didn't find at least one match, this is an
// invalid shorthand and we have to ignore it
if (!found)
return false;
}
// Fill in any remaining properties with the initial value.
for (i = 0; i < numProperties; ++i) {
if (!parsedProperty[i])
addAnimationValue(values[i], CSSInitialValue::createImplicit());
}
// Now add all of the properties we found.
for (i = 0; i < numProperties; i++)
addProperty(properties[i], values[i].release(), important);
return true;
}
bool CSSParser::parseTransitionShorthand(bool important)
{
const int properties[] = { CSSPropertyWebkitTransitionProperty,
CSSPropertyWebkitTransitionDuration,
CSSPropertyWebkitTransitionTimingFunction,
CSSPropertyWebkitTransitionDelay };
const int numProperties = WTF_ARRAY_LENGTH(properties);
ShorthandScope scope(this, CSSPropertyWebkitTransition);
bool parsedProperty[numProperties] = { false }; // compiler will repeat false as necessary
RefPtr<CSSValue> values[numProperties];
int i;
while (m_valueList->current()) {
CSSParserValue* val = m_valueList->current();
if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
// We hit the end. Fill in all remaining values with the initial value.
m_valueList->next();
for (i = 0; i < numProperties; ++i) {
if (!parsedProperty[i])
addAnimationValue(values[i], CSSInitialValue::createImplicit());
parsedProperty[i] = false;
}
if (!m_valueList->current())
break;
}
bool found = false;
for (i = 0; !found && i < numProperties; ++i) {
if (!parsedProperty[i]) {
RefPtr<CSSValue> val;
if (parseAnimationProperty(properties[i], val)) {
parsedProperty[i] = found = true;
addAnimationValue(values[i], val.release());
}
}
}
// if we didn't find at least one match, this is an
// invalid shorthand and we have to ignore it
if (!found)
return false;
}
// Fill in any remaining properties with the initial value.
for (i = 0; i < numProperties; ++i) {
if (!parsedProperty[i])
addAnimationValue(values[i], CSSInitialValue::createImplicit());
}
// Now add all of the properties we found.
for (i = 0; i < numProperties; i++)
addProperty(properties[i], values[i].release(), important);
return true;
}
bool CSSParser::parseShorthand(int propId, const int *properties, int numProperties, bool important)
{
// We try to match as many properties as possible
// We set up an array of booleans to mark which property has been found,
// and we try to search for properties until it makes no longer any sense.
ShorthandScope scope(this, propId);
bool found = false;
bool fnd[6]; // Trust me ;)
for (int i = 0; i < numProperties; i++)
fnd[i] = false;
while (m_valueList->current()) {
found = false;
for (int propIndex = 0; !found && propIndex < numProperties; ++propIndex) {
if (!fnd[propIndex]) {
if (parseValue(properties[propIndex], important))
fnd[propIndex] = found = true;
}
}
// if we didn't find at least one match, this is an
// invalid shorthand and we have to ignore it
if (!found)
return false;
}
// Fill in any remaining properties with the initial value.
m_implicitShorthand = true;
for (int i = 0; i < numProperties; ++i) {
if (!fnd[i])
addProperty(properties[i], CSSInitialValue::createImplicit(), important);
}
m_implicitShorthand = false;
return true;
}
bool CSSParser::parse4Values(int propId, const int *properties, bool important)
{
/* From the CSS 2 specs, 8.3
* If there is only one value, it applies to all sides. If there are two values, the top and
* bottom margins are set to the first value and the right and left margins are set to the second.
* If there are three values, the top is set to the first value, the left and right are set to the
* second, and the bottom is set to the third. If there are four values, they apply to the top,
* right, bottom, and left, respectively.
*/
int num = inShorthand() ? 1 : m_valueList->size();
ShorthandScope scope(this, propId);
// the order is top, right, bottom, left
switch (num) {
case 1: {
if (!parseValue(properties[0], important))
return false;
CSSValue *value = m_parsedProperties[m_numParsedProperties-1]->value();
m_implicitShorthand = true;
addProperty(properties[1], value, important);
addProperty(properties[2], value, important);
addProperty(properties[3], value, important);
m_implicitShorthand = false;
break;
}
case 2: {
if (!parseValue(properties[0], important) || !parseValue(properties[1], important))
return false;
CSSValue *value = m_parsedProperties[m_numParsedProperties-2]->value();
m_implicitShorthand = true;
addProperty(properties[2], value, important);
value = m_parsedProperties[m_numParsedProperties-2]->value();
addProperty(properties[3], value, important);
m_implicitShorthand = false;
break;
}
case 3: {
if (!parseValue(properties[0], important) || !parseValue(properties[1], important) || !parseValue(properties[2], important))
return false;
CSSValue *value = m_parsedProperties[m_numParsedProperties-2]->value();
m_implicitShorthand = true;
addProperty(properties[3], value, important);
m_implicitShorthand = false;
break;
}
case 4: {
if (!parseValue(properties[0], important) || !parseValue(properties[1], important) ||
!parseValue(properties[2], important) || !parseValue(properties[3], important))
return false;
break;
}
default: {
return false;
}
}
return true;
}
// auto | <identifier>
bool CSSParser::parsePage(int propId, bool important)
{
ASSERT(propId == CSSPropertyPage);
if (m_valueList->size() != 1)
return false;
CSSParserValue* value = m_valueList->current();
if (!value)
return false;
if (value->id == CSSValueAuto) {
addProperty(propId, primitiveValueCache()->createIdentifierValue(value->id), important);
return true;
} else if (value->id == 0 && value->unit == CSSPrimitiveValue::CSS_IDENT) {
addProperty(propId, primitiveValueCache()->createValue(value->string, CSSPrimitiveValue::CSS_STRING), important);
return true;
}
return false;
}
// <length>{1,2} | auto | [ <page-size> || [ portrait | landscape] ]
bool CSSParser::parseSize(int propId, bool important)
{
ASSERT(propId == CSSPropertySize);
if (m_valueList->size() > 2)
return false;
CSSParserValue* value = m_valueList->current();
if (!value)
return false;
RefPtr<CSSValueList> parsedValues = CSSValueList::createSpaceSeparated();
// First parameter.
SizeParameterType paramType = parseSizeParameter(parsedValues.get(), value, None);
if (paramType == None)
return false;
// Second parameter, if any.
value = m_valueList->next();
if (value) {
paramType = parseSizeParameter(parsedValues.get(), value, paramType);
if (paramType == None)
return false;
}
addProperty(propId, parsedValues.release(), important);
return true;
}
CSSParser::SizeParameterType CSSParser::parseSizeParameter(CSSValueList* parsedValues, CSSParserValue* value, SizeParameterType prevParamType)
{
switch (value->id) {
case CSSValueAuto:
if (prevParamType == None) {
parsedValues->append(primitiveValueCache()->createIdentifierValue(value->id));
return Auto;
}
return None;
case CSSValueLandscape:
case CSSValuePortrait:
if (prevParamType == None || prevParamType == PageSize) {
parsedValues->append(primitiveValueCache()->createIdentifierValue(value->id));
return Orientation;
}
return None;
case CSSValueA3:
case CSSValueA4:
case CSSValueA5:
case CSSValueB4:
case CSSValueB5:
case CSSValueLedger:
case CSSValueLegal:
case CSSValueLetter:
if (prevParamType == None || prevParamType == Orientation) {
// Normalize to Page Size then Orientation order by prepending.
// This is not specified by the CSS3 Paged Media specification, but for simpler processing later (CSSStyleSelector::applyPageSizeProperty).
parsedValues->prepend(primitiveValueCache()->createIdentifierValue(value->id));
return PageSize;
}
return None;
case 0:
if (validUnit(value, FLength | FNonNeg, m_strict) && (prevParamType == None || prevParamType == Length)) {
parsedValues->append(primitiveValueCache()->createValue(value->fValue, static_cast<CSSPrimitiveValue::UnitTypes>(value->unit)));
return Length;
}
return None;
default:
return None;
}
}
// [ <string> <string> ]+ | inherit | none
// inherit and none are handled in parseValue.
bool CSSParser::parseQuotes(int propId, bool important)
{
RefPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
while (CSSParserValue* val = m_valueList->current()) {
RefPtr<CSSValue> parsedValue;
if (val->unit == CSSPrimitiveValue::CSS_STRING)
parsedValue = CSSPrimitiveValue::create(val->string, CSSPrimitiveValue::CSS_STRING);
else
break;
values->append(parsedValue.release());
m_valueList->next();
}
if (values->length()) {
addProperty(propId, values.release(), important);
m_valueList->next();
return true;
}
return false;
}
// [ <string> | <uri> | <counter> | attr(X) | open-quote | close-quote | no-open-quote | no-close-quote ]+ | inherit
// in CSS 2.1 this got somewhat reduced:
// [ <string> | attr(X) | open-quote | close-quote | no-open-quote | no-close-quote ]+ | inherit
bool CSSParser::parseContent(int propId, bool important)
{
RefPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
while (CSSParserValue* val = m_valueList->current()) {
RefPtr<CSSValue> parsedValue;
if (val->unit == CSSPrimitiveValue::CSS_URI && m_styleSheet) {
// url
// FIXME: The completeURL call should be done when using the CSSImageValue,
// not when creating it.
parsedValue = CSSImageValue::create(m_styleSheet->completeURL(val->string));
} else if (val->unit == CSSParserValue::Function) {
// attr(X) | counter(X [,Y]) | counters(X, Y, [,Z]) | -webkit-gradient(...)
CSSParserValueList* args = val->function->args.get();
if (!args)
return false;
if (equalIgnoringCase(val->function->name, "attr(")) {
parsedValue = parseAttr(args);
if (!parsedValue)
return false;
} else if (equalIgnoringCase(val->function->name, "counter(")) {
parsedValue = parseCounterContent(args, false);
if (!parsedValue)
return false;
} else if (equalIgnoringCase(val->function->name, "counters(")) {
parsedValue = parseCounterContent(args, true);
if (!parsedValue)
return false;
} else if (isGeneratedImageValue(val)) {
if (!parseGeneratedImage(parsedValue))
return false;
} else
return false;
} else if (val->unit == CSSPrimitiveValue::CSS_IDENT) {
// open-quote
// close-quote
// no-open-quote
// no-close-quote
// inherit
// FIXME: These are not yet implemented (http://bugs.webkit.org/show_bug.cgi?id=6503).
// none
// normal
switch (val->id) {
case CSSValueOpenQuote:
case CSSValueCloseQuote:
case CSSValueNoOpenQuote:
case CSSValueNoCloseQuote:
case CSSValueNone:
case CSSValueNormal:
parsedValue = primitiveValueCache()->createIdentifierValue(val->id);
}
} else if (val->unit == CSSPrimitiveValue::CSS_STRING) {
parsedValue = primitiveValueCache()->createValue(val->string, CSSPrimitiveValue::CSS_STRING);
}
if (!parsedValue)
break;
values->append(parsedValue.release());
m_valueList->next();
}
if (values->length()) {
addProperty(propId, values.release(), important);
m_valueList->next();
return true;
}
return false;
}
PassRefPtr<CSSValue> CSSParser::parseAttr(CSSParserValueList* args)
{
if (args->size() != 1)
return 0;
CSSParserValue* a = args->current();
if (a->unit != CSSPrimitiveValue::CSS_IDENT)
return 0;
String attrName = a->string;
// CSS allows identifiers with "-" at the start, like "-webkit-mask-image".
// But HTML attribute names can't have those characters, and we should not
// even parse them inside attr().
if (attrName[0] == '-')
return 0;
if (document() && document()->isHTMLDocument())
attrName = attrName.lower();
return primitiveValueCache()->createValue(attrName, CSSPrimitiveValue::CSS_ATTR);
}
PassRefPtr<CSSValue> CSSParser::parseBackgroundColor()
{
int id = m_valueList->current()->id;
if (id == CSSValueWebkitText || (id >= CSSValueAqua && id <= CSSValueWindowtext) || id == CSSValueMenu || id == CSSValueCurrentcolor ||
(id >= CSSValueGrey && id < CSSValueWebkitText && !m_strict))
return primitiveValueCache()->createIdentifierValue(id);
return parseColor();
}
bool CSSParser::parseFillImage(RefPtr<CSSValue>& value)
{
if (m_valueList->current()->id == CSSValueNone) {
value = CSSImageValue::create();
return true;
}
if (m_valueList->current()->unit == CSSPrimitiveValue::CSS_URI) {
// FIXME: The completeURL call should be done when using the CSSImageValue,
// not when creating it.
if (m_styleSheet)
value = CSSImageValue::create(m_styleSheet->completeURL(m_valueList->current()->string));
return true;
}
if (isGeneratedImageValue(m_valueList->current()))
return parseGeneratedImage(value);
return false;
}
PassRefPtr<CSSValue> CSSParser::parseFillPositionX(CSSParserValueList* valueList)
{
int id = valueList->current()->id;
if (id == CSSValueLeft || id == CSSValueRight || id == CSSValueCenter) {
int percent = 0;
if (id == CSSValueRight)
percent = 100;
else if (id == CSSValueCenter)
percent = 50;
return primitiveValueCache()->createValue(percent, CSSPrimitiveValue::CSS_PERCENTAGE);
}
if (validUnit(valueList->current(), FPercent | FLength, m_strict))
return primitiveValueCache()->createValue(valueList->current()->fValue,
(CSSPrimitiveValue::UnitTypes)valueList->current()->unit);
return 0;
}
PassRefPtr<CSSValue> CSSParser::parseFillPositionY(CSSParserValueList* valueList)
{
int id = valueList->current()->id;
if (id == CSSValueTop || id == CSSValueBottom || id == CSSValueCenter) {
int percent = 0;
if (id == CSSValueBottom)
percent = 100;
else if (id == CSSValueCenter)
percent = 50;
return primitiveValueCache()->createValue(percent, CSSPrimitiveValue::CSS_PERCENTAGE);
}
if (validUnit(valueList->current(), FPercent | FLength, m_strict))
return primitiveValueCache()->createValue(valueList->current()->fValue,
(CSSPrimitiveValue::UnitTypes)valueList->current()->unit);
return 0;
}
PassRefPtr<CSSValue> CSSParser::parseFillPositionComponent(CSSParserValueList* valueList, unsigned& cumulativeFlags, FillPositionFlag& individualFlag)
{
int id = valueList->current()->id;
if (id == CSSValueLeft || id == CSSValueTop || id == CSSValueRight || id == CSSValueBottom || id == CSSValueCenter) {
int percent = 0;
if (id == CSSValueLeft || id == CSSValueRight) {
if (cumulativeFlags & XFillPosition)
return 0;
cumulativeFlags |= XFillPosition;
individualFlag = XFillPosition;
if (id == CSSValueRight)
percent = 100;
}
else if (id == CSSValueTop || id == CSSValueBottom) {
if (cumulativeFlags & YFillPosition)
return 0;
cumulativeFlags |= YFillPosition;
individualFlag = YFillPosition;
if (id == CSSValueBottom)
percent = 100;
} else if (id == CSSValueCenter) {
// Center is ambiguous, so we're not sure which position we've found yet, an x or a y.
percent = 50;
cumulativeFlags |= AmbiguousFillPosition;
individualFlag = AmbiguousFillPosition;
}
return primitiveValueCache()->createValue(percent, CSSPrimitiveValue::CSS_PERCENTAGE);
}
if (validUnit(valueList->current(), FPercent | FLength, m_strict)) {
if (!cumulativeFlags) {
cumulativeFlags |= XFillPosition;
individualFlag = XFillPosition;
} else if (cumulativeFlags & (XFillPosition | AmbiguousFillPosition)) {
cumulativeFlags |= YFillPosition;
individualFlag = YFillPosition;
} else
return 0;
return primitiveValueCache()->createValue(valueList->current()->fValue,
(CSSPrimitiveValue::UnitTypes)valueList->current()->unit);
}
return 0;
}
void CSSParser::parseFillPosition(CSSParserValueList* valueList, RefPtr<CSSValue>& value1, RefPtr<CSSValue>& value2)
{
CSSParserValue* value = valueList->current();
// Parse the first value. We're just making sure that it is one of the valid keywords or a percentage/length.
unsigned cumulativeFlags = 0;
FillPositionFlag value1Flag = InvalidFillPosition;
FillPositionFlag value2Flag = InvalidFillPosition;
value1 = parseFillPositionComponent(valueList, cumulativeFlags, value1Flag);
if (!value1)
return;
// It only takes one value for background-position to be correctly parsed if it was specified in a shorthand (since we
// can assume that any other values belong to the rest of the shorthand). If we're not parsing a shorthand, though, the
// value was explicitly specified for our property.
value = valueList->next();
// First check for the comma. If so, we are finished parsing this value or value pair.
if (value && value->unit == CSSParserValue::Operator && value->iValue == ',')
value = 0;
if (value) {
value2 = parseFillPositionComponent(valueList, cumulativeFlags, value2Flag);
if (value2)
valueList->next();
else {
if (!inShorthand()) {
value1.clear();
return;
}
}
}
if (!value2)
// Only one value was specified. If that value was not a keyword, then it sets the x position, and the y position
// is simply 50%. This is our default.
// For keywords, the keyword was either an x-keyword (left/right), a y-keyword (top/bottom), or an ambiguous keyword (center).
// For left/right/center, the default of 50% in the y is still correct.
value2 = primitiveValueCache()->createValue(50, CSSPrimitiveValue::CSS_PERCENTAGE);
if (value1Flag == YFillPosition || value2Flag == XFillPosition)
value1.swap(value2);
}
void CSSParser::parseFillRepeat(RefPtr<CSSValue>& value1, RefPtr<CSSValue>& value2)
{
CSSParserValue* value = m_valueList->current();
int id = m_valueList->current()->id;
if (id == CSSValueRepeatX) {
m_implicitShorthand = true;
value1 = primitiveValueCache()->createIdentifierValue(CSSValueRepeat);
value2 = primitiveValueCache()->createIdentifierValue(CSSValueNoRepeat);
m_valueList->next();
return;
}
if (id == CSSValueRepeatY) {
m_implicitShorthand = true;
value1 = primitiveValueCache()->createIdentifierValue(CSSValueNoRepeat);
value2 = primitiveValueCache()->createIdentifierValue(CSSValueRepeat);
m_valueList->next();
return;
}
if (id == CSSValueRepeat || id == CSSValueNoRepeat || id == CSSValueRound || id == CSSValueSpace)
value1 = primitiveValueCache()->createIdentifierValue(id);
else {
value1 = 0;
return;
}
value = m_valueList->next();
// First check for the comma. If so, we are finished parsing this value or value pair.
if (value && value->unit == CSSParserValue::Operator && value->iValue == ',')
value = 0;
if (value)
id = m_valueList->current()->id;
if (value && (id == CSSValueRepeat || id == CSSValueNoRepeat || id == CSSValueRound || id == CSSValueSpace)) {
value2 = primitiveValueCache()->createIdentifierValue(id);
m_valueList->next();
} else {
// If only one value was specified, value2 is the same as value1.
m_implicitShorthand = true;
value2 = primitiveValueCache()->createIdentifierValue(static_cast<CSSPrimitiveValue*>(value1.get())->getIdent());
}
}
PassRefPtr<CSSValue> CSSParser::parseFillSize(int propId, bool& allowComma)
{
allowComma = true;
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueContain || value->id == CSSValueCover)
return primitiveValueCache()->createIdentifierValue(value->id);
RefPtr<CSSPrimitiveValue> parsedValue1;
if (value->id == CSSValueAuto)
parsedValue1 = primitiveValueCache()->createValue(0, CSSPrimitiveValue::CSS_UNKNOWN);
else {
if (!validUnit(value, FLength | FPercent, m_strict))
return 0;
parsedValue1 = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
}
CSSPropertyID property = static_cast<CSSPropertyID>(propId);
RefPtr<CSSPrimitiveValue> parsedValue2;
if ((value = m_valueList->next())) {
if (value->id == CSSValueAuto)
parsedValue2 = primitiveValueCache()->createValue(0, CSSPrimitiveValue::CSS_UNKNOWN);
else if (value->unit == CSSParserValue::Operator && value->iValue == ',')
allowComma = false;
else {
if (!validUnit(value, FLength | FPercent, m_strict))
return 0;
parsedValue2 = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
}
}
if (!parsedValue2) {
if (property == CSSPropertyWebkitBackgroundSize || property == CSSPropertyWebkitMaskSize)
parsedValue2 = parsedValue1;
else
parsedValue2 = primitiveValueCache()->createValue(0, CSSPrimitiveValue::CSS_UNKNOWN);
}
return primitiveValueCache()->createValue(Pair::create(parsedValue1.release(), parsedValue2.release()));
}
bool CSSParser::parseFillProperty(int propId, int& propId1, int& propId2,
RefPtr<CSSValue>& retValue1, RefPtr<CSSValue>& retValue2)
{
RefPtr<CSSValueList> values;
RefPtr<CSSValueList> values2;
CSSParserValue* val;
RefPtr<CSSValue> value;
RefPtr<CSSValue> value2;
bool allowComma = false;
retValue1 = retValue2 = 0;
propId1 = propId;
propId2 = propId;
if (propId == CSSPropertyBackgroundPosition) {
propId1 = CSSPropertyBackgroundPositionX;
propId2 = CSSPropertyBackgroundPositionY;
} else if (propId == CSSPropertyWebkitMaskPosition) {
propId1 = CSSPropertyWebkitMaskPositionX;
propId2 = CSSPropertyWebkitMaskPositionY;
} else if (propId == CSSPropertyBackgroundRepeat) {
propId1 = CSSPropertyBackgroundRepeatX;
propId2 = CSSPropertyBackgroundRepeatY;
} else if (propId == CSSPropertyWebkitMaskRepeat) {
propId1 = CSSPropertyWebkitMaskRepeatX;
propId2 = CSSPropertyWebkitMaskRepeatY;
}
while ((val = m_valueList->current())) {
RefPtr<CSSValue> currValue;
RefPtr<CSSValue> currValue2;
if (allowComma) {
if (val->unit != CSSParserValue::Operator || val->iValue != ',')
return false;
m_valueList->next();
allowComma = false;
} else {
allowComma = true;
switch (propId) {
case CSSPropertyBackgroundColor:
currValue = parseBackgroundColor();
if (currValue)
m_valueList->next();
break;
case CSSPropertyBackgroundAttachment:
case CSSPropertyWebkitMaskAttachment:
if (val->id == CSSValueScroll || val->id == CSSValueFixed || val->id == CSSValueLocal) {
currValue = primitiveValueCache()->createIdentifierValue(val->id);
m_valueList->next();
}
break;
case CSSPropertyBackgroundImage:
case CSSPropertyWebkitMaskImage:
if (parseFillImage(currValue))
m_valueList->next();
break;
case CSSPropertyWebkitBackgroundClip:
case CSSPropertyWebkitBackgroundOrigin:
case CSSPropertyWebkitMaskClip:
case CSSPropertyWebkitMaskOrigin:
// The first three values here are deprecated and do not apply to the version of the property that has
// the -webkit- prefix removed.
if (val->id == CSSValueBorder || val->id == CSSValuePadding || val->id == CSSValueContent ||
val->id == CSSValueBorderBox || val->id == CSSValuePaddingBox || val->id == CSSValueContentBox ||
((propId == CSSPropertyWebkitBackgroundClip || propId == CSSPropertyWebkitMaskClip) &&
(val->id == CSSValueText || val->id == CSSValueWebkitText))) {
currValue = primitiveValueCache()->createIdentifierValue(val->id);
m_valueList->next();
}
break;
case CSSPropertyBackgroundClip:
if (parseBackgroundClip(val, currValue, primitiveValueCache()))
m_valueList->next();
break;
case CSSPropertyBackgroundOrigin:
if (val->id == CSSValueBorderBox || val->id == CSSValuePaddingBox || val->id == CSSValueContentBox) {
currValue = primitiveValueCache()->createIdentifierValue(val->id);
m_valueList->next();
}
break;
case CSSPropertyBackgroundPosition:
case CSSPropertyWebkitMaskPosition:
parseFillPosition(m_valueList, currValue, currValue2);
// parseFillPosition advances the m_valueList pointer
break;
case CSSPropertyBackgroundPositionX:
case CSSPropertyWebkitMaskPositionX: {
currValue = parseFillPositionX(m_valueList);
if (currValue)
m_valueList->next();
break;
}
case CSSPropertyBackgroundPositionY:
case CSSPropertyWebkitMaskPositionY: {
currValue = parseFillPositionY(m_valueList);
if (currValue)
m_valueList->next();
break;
}
case CSSPropertyWebkitBackgroundComposite:
case CSSPropertyWebkitMaskComposite:
if ((val->id >= CSSValueClear && val->id <= CSSValuePlusLighter) || val->id == CSSValueHighlight) {
currValue = primitiveValueCache()->createIdentifierValue(val->id);
m_valueList->next();
}
break;
case CSSPropertyBackgroundRepeat:
case CSSPropertyWebkitMaskRepeat:
parseFillRepeat(currValue, currValue2);
// parseFillRepeat advances the m_valueList pointer
break;
case CSSPropertyBackgroundSize:
case CSSPropertyWebkitBackgroundSize:
case CSSPropertyWebkitMaskSize: {
currValue = parseFillSize(propId, allowComma);
if (currValue)
m_valueList->next();
break;
}
}
if (!currValue)
return false;
if (value && !values) {
values = CSSValueList::createCommaSeparated();
values->append(value.release());
}
if (value2 && !values2) {
values2 = CSSValueList::createCommaSeparated();
values2->append(value2.release());
}
if (values)
values->append(currValue.release());
else
value = currValue.release();
if (currValue2) {
if (values2)
values2->append(currValue2.release());
else
value2 = currValue2.release();
}
}
// When parsing any fill shorthand property, we let it handle building up the lists for all
// properties.
if (inShorthand())
break;
}
if (values && values->length()) {
retValue1 = values.release();
if (values2 && values2->length())
retValue2 = values2.release();
return true;
}
if (value) {
retValue1 = value.release();
retValue2 = value2.release();
return true;
}
return false;
}
PassRefPtr<CSSValue> CSSParser::parseAnimationDelay()
{
CSSParserValue* value = m_valueList->current();
if (validUnit(value, FTime, m_strict))
return primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
return 0;
}
PassRefPtr<CSSValue> CSSParser::parseAnimationDirection()
{
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueNormal || value->id == CSSValueAlternate)
return primitiveValueCache()->createIdentifierValue(value->id);
return 0;
}
PassRefPtr<CSSValue> CSSParser::parseAnimationDuration()
{
CSSParserValue* value = m_valueList->current();
if (validUnit(value, FTime | FNonNeg, m_strict))
return primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
return 0;
}
PassRefPtr<CSSValue> CSSParser::parseAnimationFillMode()
{
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueNone || value->id == CSSValueForwards || value->id == CSSValueBackwards || value->id == CSSValueBoth)
return primitiveValueCache()->createIdentifierValue(value->id);
return 0;
}
PassRefPtr<CSSValue> CSSParser::parseAnimationIterationCount()
{
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueInfinite)
return primitiveValueCache()->createIdentifierValue(value->id);
if (validUnit(value, FInteger | FNonNeg, m_strict))
return primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes)value->unit);
return 0;
}
PassRefPtr<CSSValue> CSSParser::parseAnimationName()
{
CSSParserValue* value = m_valueList->current();
if (value->unit == CSSPrimitiveValue::CSS_STRING || value->unit == CSSPrimitiveValue::CSS_IDENT) {
if (value->id == CSSValueNone || (value->unit == CSSPrimitiveValue::CSS_STRING && equalIgnoringCase(value->string, "none"))) {
return primitiveValueCache()->createIdentifierValue(CSSValueNone);
} else {
return primitiveValueCache()->createValue(value->string, CSSPrimitiveValue::CSS_STRING);
}
}
return 0;
}
PassRefPtr<CSSValue> CSSParser::parseAnimationPlayState()
{
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueRunning || value->id == CSSValuePaused)
return primitiveValueCache()->createIdentifierValue(value->id);
return 0;
}
PassRefPtr<CSSValue> CSSParser::parseAnimationProperty()
{
CSSParserValue* value = m_valueList->current();
if (value->unit != CSSPrimitiveValue::CSS_IDENT)
return 0;
int result = cssPropertyID(value->string);
if (result)
return primitiveValueCache()->createIdentifierValue(result);
if (equalIgnoringCase(value->string, "all"))
return primitiveValueCache()->createIdentifierValue(CSSValueAll);
if (equalIgnoringCase(value->string, "none"))
return primitiveValueCache()->createIdentifierValue(CSSValueNone);
return 0;
}
bool CSSParser::parseTransformOriginShorthand(RefPtr<CSSValue>& value1, RefPtr<CSSValue>& value2, RefPtr<CSSValue>& value3)
{
parseFillPosition(m_valueList, value1, value2);
// now get z
if (m_valueList->current()) {
if (validUnit(m_valueList->current(), FLength, m_strict)) {
value3 = primitiveValueCache()->createValue(m_valueList->current()->fValue,
(CSSPrimitiveValue::UnitTypes)m_valueList->current()->unit);
m_valueList->next();
return true;
}
return false;
}
return true;
}
bool CSSParser::parseCubicBezierTimingFunctionValue(CSSParserValueList*& args, double& result)
{
CSSParserValue* v = args->current();
if (!validUnit(v, FNumber, m_strict))
return false;
result = v->fValue;
if (result < 0 || result > 1.0)
return false;
v = args->next();
if (!v)
// The last number in the function has no comma after it, so we're done.
return true;
if (v->unit != CSSParserValue::Operator && v->iValue != ',')
return false;
v = args->next();
return true;
}
PassRefPtr<CSSValue> CSSParser::parseAnimationTimingFunction()
{
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueEase || value->id == CSSValueLinear || value->id == CSSValueEaseIn || value->id == CSSValueEaseOut
|| value->id == CSSValueEaseInOut || value->id == CSSValueStepStart || value->id == CSSValueStepEnd)
return primitiveValueCache()->createIdentifierValue(value->id);
// We must be a function.
if (value->unit != CSSParserValue::Function)
return 0;
CSSParserValueList* args = value->function->args.get();
if (equalIgnoringCase(value->function->name, "steps(")) {
// For steps, 1 or 2 params must be specified (comma-separated)
if (!args || (args->size() != 1 && args->size() != 3))
return 0;
// There are two values.
int numSteps;
bool stepAtStart = false;
CSSParserValue* v = args->current();
if (!validUnit(v, FInteger, m_strict))
return 0;
numSteps = (int) min(v->fValue, (double)INT_MAX);
if (numSteps < 1)
return 0;
v = args->next();
if (v) {
// There is a comma so we need to parse the second value
if (v->unit != CSSParserValue::Operator && v->iValue != ',')
return 0;
v = args->next();
if (v->id != CSSValueStart && v->id != CSSValueEnd)
return 0;
stepAtStart = v->id == CSSValueStart;
}
return CSSStepsTimingFunctionValue::create(numSteps, stepAtStart);
}
if (equalIgnoringCase(value->function->name, "cubic-bezier(")) {
// For cubic bezier, 4 values must be specified.
if (!args || args->size() != 7)
return 0;
// There are two points specified. The values must be between 0 and 1.
double x1, y1, x2, y2;
if (!parseCubicBezierTimingFunctionValue(args, x1))
return 0;
if (!parseCubicBezierTimingFunctionValue(args, y1))
return 0;
if (!parseCubicBezierTimingFunctionValue(args, x2))
return 0;
if (!parseCubicBezierTimingFunctionValue(args, y2))
return 0;
return CSSCubicBezierTimingFunctionValue::create(x1, y1, x2, y2);
}
return 0;
}
bool CSSParser::parseAnimationProperty(int propId, RefPtr<CSSValue>& result)
{
RefPtr<CSSValueList> values;
CSSParserValue* val;
RefPtr<CSSValue> value;
bool allowComma = false;
result = 0;
while ((val = m_valueList->current())) {
RefPtr<CSSValue> currValue;
if (allowComma) {
if (val->unit != CSSParserValue::Operator || val->iValue != ',')
return false;
m_valueList->next();
allowComma = false;
}
else {
switch (propId) {
case CSSPropertyWebkitAnimationDelay:
case CSSPropertyWebkitTransitionDelay:
currValue = parseAnimationDelay();
if (currValue)
m_valueList->next();
break;
case CSSPropertyWebkitAnimationDirection:
currValue = parseAnimationDirection();
if (currValue)
m_valueList->next();
break;
case CSSPropertyWebkitAnimationDuration:
case CSSPropertyWebkitTransitionDuration:
currValue = parseAnimationDuration();
if (currValue)
m_valueList->next();
break;
case CSSPropertyWebkitAnimationFillMode:
currValue = parseAnimationFillMode();
if (currValue)
m_valueList->next();
break;
case CSSPropertyWebkitAnimationIterationCount:
currValue = parseAnimationIterationCount();
if (currValue)
m_valueList->next();
break;
case CSSPropertyWebkitAnimationName:
currValue = parseAnimationName();
if (currValue)
m_valueList->next();
break;
case CSSPropertyWebkitAnimationPlayState:
currValue = parseAnimationPlayState();
if (currValue)
m_valueList->next();
break;
case CSSPropertyWebkitTransitionProperty:
currValue = parseAnimationProperty();
if (currValue)
m_valueList->next();
break;
case CSSPropertyWebkitAnimationTimingFunction:
case CSSPropertyWebkitTransitionTimingFunction:
currValue = parseAnimationTimingFunction();
if (currValue)
m_valueList->next();
break;
}
if (!currValue)
return false;
if (value && !values) {
values = CSSValueList::createCommaSeparated();
values->append(value.release());
}
if (values)
values->append(currValue.release());
else
value = currValue.release();
allowComma = true;
}
// When parsing the 'transition' shorthand property, we let it handle building up the lists for all
// properties.
if (inShorthand())
break;
}
if (values && values->length()) {
result = values.release();
return true;
}
if (value) {
result = value.release();
return true;
}
return false;
}
#if ENABLE(DASHBOARD_SUPPORT)
#define DASHBOARD_REGION_NUM_PARAMETERS 6
#define DASHBOARD_REGION_SHORT_NUM_PARAMETERS 2
static CSSParserValue* skipCommaInDashboardRegion(CSSParserValueList *args)
{
if (args->size() == (DASHBOARD_REGION_NUM_PARAMETERS*2-1) ||
args->size() == (DASHBOARD_REGION_SHORT_NUM_PARAMETERS*2-1)) {
CSSParserValue* current = args->current();
if (current->unit == CSSParserValue::Operator && current->iValue == ',')
return args->next();
}
return args->current();
}
bool CSSParser::parseDashboardRegions(int propId, bool important)
{
bool valid = true;
CSSParserValue* value = m_valueList->current();
if (value->id == CSSValueNone) {
if (m_valueList->next())
return false;
addProperty(propId, primitiveValueCache()->createIdentifierValue(value->id), important);
return valid;
}
RefPtr<DashboardRegion> firstRegion = DashboardRegion::create();
DashboardRegion* region = 0;
while (value) {
if (region == 0) {
region = firstRegion.get();
} else {
RefPtr<DashboardRegion> nextRegion = DashboardRegion::create();
region->m_next = nextRegion;
region = nextRegion.get();
}
if (value->unit != CSSParserValue::Function) {
valid = false;
break;
}
// Commas count as values, so allow:
// dashboard-region(label, type, t, r, b, l) or dashboard-region(label type t r b l)
// dashboard-region(label, type, t, r, b, l) or dashboard-region(label type t r b l)
// also allow
// dashboard-region(label, type) or dashboard-region(label type)
// dashboard-region(label, type) or dashboard-region(label type)
CSSParserValueList* args = value->function->args.get();
if (!equalIgnoringCase(value->function->name, "dashboard-region(") || !args) {
valid = false;
break;
}
int numArgs = args->size();
if ((numArgs != DASHBOARD_REGION_NUM_PARAMETERS && numArgs != (DASHBOARD_REGION_NUM_PARAMETERS*2-1)) &&
(numArgs != DASHBOARD_REGION_SHORT_NUM_PARAMETERS && numArgs != (DASHBOARD_REGION_SHORT_NUM_PARAMETERS*2-1))) {
valid = false;
break;
}
// First arg is a label.
CSSParserValue* arg = args->current();
if (arg->unit != CSSPrimitiveValue::CSS_IDENT) {
valid = false;
break;
}
region->m_label = arg->string;
// Second arg is a type.
arg = args->next();
arg = skipCommaInDashboardRegion(args);
if (arg->unit != CSSPrimitiveValue::CSS_IDENT) {
valid = false;
break;
}
if (equalIgnoringCase(arg->string, "circle"))
region->m_isCircle = true;
else if (equalIgnoringCase(arg->string, "rectangle"))
region->m_isRectangle = true;
else {
valid = false;
break;
}
region->m_geometryType = arg->string;
if (numArgs == DASHBOARD_REGION_SHORT_NUM_PARAMETERS || numArgs == (DASHBOARD_REGION_SHORT_NUM_PARAMETERS*2-1)) {
// This originally used CSSValueInvalid by accident. It might be more logical to use something else.
RefPtr<CSSPrimitiveValue> amount = primitiveValueCache()->createIdentifierValue(CSSValueInvalid);
region->setTop(amount);
region->setRight(amount);
region->setBottom(amount);
region->setLeft(amount);
} else {
// Next four arguments must be offset numbers
int i;
for (i = 0; i < 4; i++) {
arg = args->next();
arg = skipCommaInDashboardRegion(args);
valid = arg->id == CSSValueAuto || validUnit(arg, FLength, m_strict);
if (!valid)
break;
RefPtr<CSSPrimitiveValue> amount = arg->id == CSSValueAuto ?
primitiveValueCache()->createIdentifierValue(CSSValueAuto) :
primitiveValueCache()->createValue(arg->fValue, (CSSPrimitiveValue::UnitTypes) arg->unit);
if (i == 0)
region->setTop(amount);
else if (i == 1)
region->setRight(amount);
else if (i == 2)
region->setBottom(amount);
else
region->setLeft(amount);
}
}
if (args->next())
return false;
value = m_valueList->next();
}
if (valid)
addProperty(propId, primitiveValueCache()->createValue(firstRegion.release()), important);
return valid;
}
#endif /* ENABLE(DASHBOARD_SUPPORT) */
PassRefPtr<CSSValue> CSSParser::parseCounterContent(CSSParserValueList* args, bool counters)
{
unsigned numArgs = args->size();
if (counters && numArgs != 3 && numArgs != 5)
return 0;
if (!counters && numArgs != 1 && numArgs != 3)
return 0;
CSSParserValue* i = args->current();
if (i->unit != CSSPrimitiveValue::CSS_IDENT)
return 0;
RefPtr<CSSPrimitiveValue> identifier = primitiveValueCache()->createValue(i->string, CSSPrimitiveValue::CSS_STRING);
RefPtr<CSSPrimitiveValue> separator;
if (!counters)
separator = primitiveValueCache()->createValue(String(), CSSPrimitiveValue::CSS_STRING);
else {
i = args->next();
if (i->unit != CSSParserValue::Operator || i->iValue != ',')
return 0;
i = args->next();
if (i->unit != CSSPrimitiveValue::CSS_STRING)
return 0;
separator = primitiveValueCache()->createValue(i->string, (CSSPrimitiveValue::UnitTypes) i->unit);
}
RefPtr<CSSPrimitiveValue> listStyle;
i = args->next();
if (!i) // Make the list style default decimal
listStyle = primitiveValueCache()->createValue(CSSValueDecimal - CSSValueDisc, CSSPrimitiveValue::CSS_NUMBER);
else {
if (i->unit != CSSParserValue::Operator || i->iValue != ',')
return 0;
i = args->next();
if (i->unit != CSSPrimitiveValue::CSS_IDENT)
return 0;
short ls = 0;
if (i->id == CSSValueNone)
ls = CSSValueKatakanaIroha - CSSValueDisc + 1;
else if (i->id >= CSSValueDisc && i->id <= CSSValueKatakanaIroha)
ls = i->id - CSSValueDisc;
else
return 0;
listStyle = primitiveValueCache()->createValue(ls, (CSSPrimitiveValue::UnitTypes) i->unit);
}
return primitiveValueCache()->createValue(Counter::create(identifier.release(), listStyle.release(), separator.release()));
}
bool CSSParser::parseShape(int propId, bool important)
{
CSSParserValue* value = m_valueList->current();
CSSParserValueList* args = value->function->args.get();
if (!equalIgnoringCase(value->function->name, "rect(") || !args)
return false;
// rect(t, r, b, l) || rect(t r b l)
if (args->size() != 4 && args->size() != 7)
return false;
RefPtr<Rect> rect = Rect::create();
bool valid = true;
int i = 0;
CSSParserValue* a = args->current();
while (a) {
valid = a->id == CSSValueAuto || validUnit(a, FLength, m_strict);
if (!valid)
break;
RefPtr<CSSPrimitiveValue> length = a->id == CSSValueAuto ?
primitiveValueCache()->createIdentifierValue(CSSValueAuto) :
primitiveValueCache()->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes) a->unit);
if (i == 0)
rect->setTop(length);
else if (i == 1)
rect->setRight(length);
else if (i == 2)
rect->setBottom(length);
else
rect->setLeft(length);
a = args->next();
if (a && args->size() == 7) {
if (a->unit == CSSParserValue::Operator && a->iValue == ',') {
a = args->next();
} else {
valid = false;
break;
}
}
i++;
}
if (valid) {
addProperty(propId, primitiveValueCache()->createValue(rect.release()), important);
m_valueList->next();
return true;
}
return false;
}
// [ 'font-style' || 'font-variant' || 'font-weight' ]? 'font-size' [ / 'line-height' ]? 'font-family'
bool CSSParser::parseFont(bool important)
{
bool valid = true;
CSSParserValue *value = m_valueList->current();
RefPtr<FontValue> font = FontValue::create();
// optional font-style, font-variant and font-weight
while (value) {
int id = value->id;
if (id) {
if (id == CSSValueNormal) {
// do nothing, it's the inital value for all three
} else if (id == CSSValueItalic || id == CSSValueOblique) {
if (font->style)
return false;
font->style = primitiveValueCache()->createIdentifierValue(id);
} else if (id == CSSValueSmallCaps) {
if (font->variant)
return false;
font->variant = primitiveValueCache()->createIdentifierValue(id);
} else if (id >= CSSValueBold && id <= CSSValueLighter) {
if (font->weight)
return false;
font->weight = primitiveValueCache()->createIdentifierValue(id);
} else {
valid = false;
}
} else if (!font->weight && validUnit(value, FInteger | FNonNeg, true)) {
int weight = (int)value->fValue;
int val = 0;
if (weight == 100)
val = CSSValue100;
else if (weight == 200)
val = CSSValue200;
else if (weight == 300)
val = CSSValue300;
else if (weight == 400)
val = CSSValue400;
else if (weight == 500)
val = CSSValue500;
else if (weight == 600)
val = CSSValue600;
else if (weight == 700)
val = CSSValue700;
else if (weight == 800)
val = CSSValue800;
else if (weight == 900)
val = CSSValue900;
if (val)
font->weight = primitiveValueCache()->createIdentifierValue(val);
else
valid = false;
} else {
valid = false;
}
if (!valid)
break;
value = m_valueList->next();
}
if (!value)
return false;
// set undefined values to default
if (!font->style)
font->style = primitiveValueCache()->createIdentifierValue(CSSValueNormal);
if (!font->variant)
font->variant = primitiveValueCache()->createIdentifierValue(CSSValueNormal);
if (!font->weight)
font->weight = primitiveValueCache()->createIdentifierValue(CSSValueNormal);
// now a font size _must_ come
// <absolute-size> | <relative-size> | <length> | <percentage> | inherit
if (value->id >= CSSValueXxSmall && value->id <= CSSValueLarger)
font->size = primitiveValueCache()->createIdentifierValue(value->id);
else if (validUnit(value, FLength | FPercent | FNonNeg, m_strict))
font->size = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit);
value = m_valueList->next();
if (!font->size || !value)
return false;
if (value->unit == CSSParserValue::Operator && value->iValue == '/') {
// line-height
value = m_valueList->next();
if (!value)
return false;
if (value->id == CSSValueNormal) {
// default value, nothing to do
} else if (validUnit(value, FNumber | FLength | FPercent | FNonNeg, m_strict))
font->lineHeight = primitiveValueCache()->createValue(value->fValue, (CSSPrimitiveValue::UnitTypes) value->unit);
else
return false;
value = m_valueList->next();
if (!value)
return false;
}
if (!font->lineHeight)
font->lineHeight = primitiveValueCache()->createIdentifierValue(CSSValueNormal);
// font family must come now
font->family = parseFontFamily();
if (m_valueList->current() || !font->family)
return false;
addProperty(CSSPropertyFont, font.release(), important);
return true;
}
PassRefPtr<CSSValueList> CSSParser::parseFontFamily()
{
RefPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
CSSParserValue* value = m_valueList->current();
FontFamilyValue* currFamily = 0;
while (value) {
CSSParserValue* nextValue = m_valueList->next();
bool nextValBreaksFont = !nextValue ||
(nextValue->unit == CSSParserValue::Operator && nextValue->iValue == ',');
bool nextValIsFontName = nextValue &&
((nextValue->id >= CSSValueSerif && nextValue->id <= CSSValueWebkitBody) ||
(nextValue->unit == CSSPrimitiveValue::CSS_STRING || nextValue->unit == CSSPrimitiveValue::CSS_IDENT));
if (value->id >= CSSValueSerif && value->id <= CSSValueWebkitBody) {
if (currFamily)
currFamily->appendSpaceSeparated(value->string.characters, value->string.length);
else if (nextValBreaksFont || !nextValIsFontName)
list->append(primitiveValueCache()->createIdentifierValue(value->id));
else {
RefPtr<FontFamilyValue> newFamily = FontFamilyValue::create(value->string);
currFamily = newFamily.get();
list->append(newFamily.release());
}
} else if (value->unit == CSSPrimitiveValue::CSS_STRING) {
// Strings never share in a family name.
currFamily = 0;
list->append(FontFamilyValue::create(value->string));
} else if (value->unit == CSSPrimitiveValue::CSS_IDENT) {
if (currFamily)
currFamily->appendSpaceSeparated(value->string.characters, value->string.length);
else if (nextValBreaksFont || !nextValIsFontName)
list->append(FontFamilyValue::create(value->string));
else {
RefPtr<FontFamilyValue> newFamily = FontFamilyValue::create(value->string);
currFamily = newFamily.get();
list->append(newFamily.release());
}
} else {
break;
}
if (!nextValue)
break;
if (nextValBreaksFont) {
value = m_valueList->next();
currFamily = 0;
}
else if (nextValIsFontName)
value = nextValue;
else
break;
}
if (!list->length())
list = 0;
return list.release();
}
bool CSSParser::parseFontStyle(bool important)
{
RefPtr<CSSValueList> values;
if (m_valueList->size() > 1)
values = CSSValueList::createCommaSeparated();
CSSParserValue* val;
bool expectComma = false;
while ((val = m_valueList->current())) {
RefPtr<CSSPrimitiveValue> parsedValue;
if (!expectComma) {
expectComma = true;
if (val->id == CSSValueNormal || val->id == CSSValueItalic || val->id == CSSValueOblique)
parsedValue = primitiveValueCache()->createIdentifierValue(val->id);
else if (val->id == CSSValueAll && !values) {
// 'all' is only allowed in @font-face and with no other values. Make a value list to
// indicate that we are in the @font-face case.
values = CSSValueList::createCommaSeparated();
parsedValue = primitiveValueCache()->createIdentifierValue(val->id);
}
} else if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
expectComma = false;
m_valueList->next();
continue;
}
if (!parsedValue)
return false;
m_valueList->next();
if (values)
values->append(parsedValue.release());
else {
addProperty(CSSPropertyFontStyle, parsedValue.release(), important);
return true;
}
}
if (values && values->length()) {
m_hasFontFaceOnlyValues = true;
addProperty(CSSPropertyFontStyle, values.release(), important);
return true;
}
return false;
}
bool CSSParser::parseFontVariant(bool important)
{
RefPtr<CSSValueList> values;
if (m_valueList->size() > 1)
values = CSSValueList::createCommaSeparated();
CSSParserValue* val;
bool expectComma = false;
while ((val = m_valueList->current())) {
RefPtr<CSSPrimitiveValue> parsedValue;
if (!expectComma) {
expectComma = true;
if (val->id == CSSValueNormal || val->id == CSSValueSmallCaps)
parsedValue = primitiveValueCache()->createIdentifierValue(val->id);
else if (val->id == CSSValueAll && !values) {
// 'all' is only allowed in @font-face and with no other values. Make a value list to
// indicate that we are in the @font-face case.
values = CSSValueList::createCommaSeparated();
parsedValue = primitiveValueCache()->createIdentifierValue(val->id);
}
} else if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
expectComma = false;
m_valueList->next();
continue;
}
if (!parsedValue)
return false;
m_valueList->next();
if (values)
values->append(parsedValue.release());
else {
addProperty(CSSPropertyFontVariant, parsedValue.release(), important);
return true;
}
}
if (values && values->length()) {
m_hasFontFaceOnlyValues = true;
addProperty(CSSPropertyFontVariant, values.release(), important);
return true;
}
return false;
}
bool CSSParser::parseFontWeight(bool important)
{
RefPtr<CSSValueList> values;
if (m_valueList->size() > 1)
values = CSSValueList::createCommaSeparated();
CSSParserValue* val;
bool expectComma = false;
while ((val = m_valueList->current())) {
RefPtr<CSSPrimitiveValue> parsedValue;
if (!expectComma) {
expectComma = true;
if (val->unit == CSSPrimitiveValue::CSS_IDENT) {
if (val->id >= CSSValueNormal && val->id <= CSSValue900)
parsedValue = primitiveValueCache()->createIdentifierValue(val->id);
else if (val->id == CSSValueAll && !values) {
// 'all' is only allowed in @font-face and with no other values. Make a value list to
// indicate that we are in the @font-face case.
values = CSSValueList::createCommaSeparated();
parsedValue = primitiveValueCache()->createIdentifierValue(val->id);
}
} else if (validUnit(val, FInteger | FNonNeg, false)) {
int weight = static_cast<int>(val->fValue);
if (!(weight % 100) && weight >= 100 && weight <= 900)
parsedValue = primitiveValueCache()->createIdentifierValue(CSSValue100 + weight / 100 - 1);
}
} else if (val->unit == CSSParserValue::Operator && val->iValue == ',') {
expectComma = false;
m_valueList->next();
continue;
}
if (!parsedValue)
return false;
m_valueList->next();
if (values)
values->append(parsedValue.release());
else {
addProperty(CSSPropertyFontWeight, parsedValue.release(), important);
return true;
}
}
if (values && values->length()) {
m_hasFontFaceOnlyValues = true;
addProperty(CSSPropertyFontWeight, values.release(), important);
return true;
}
return false;
}
static bool isValidFormatFunction(CSSParserValue* val)
{
CSSParserValueList* args = val->function->args.get();
return equalIgnoringCase(val->function->name, "format(") && (args->current()->unit == CSSPrimitiveValue::CSS_STRING || args->current()->unit == CSSPrimitiveValue::CSS_IDENT);
}
bool CSSParser::parseFontFaceSrc()
{
RefPtr<CSSValueList> values(CSSValueList::createCommaSeparated());
CSSParserValue* val;
bool expectComma = false;
bool allowFormat = false;
bool failed = false;
RefPtr<CSSFontFaceSrcValue> uriValue;
while ((val = m_valueList->current())) {
RefPtr<CSSFontFaceSrcValue> parsedValue;
if (val->unit == CSSPrimitiveValue::CSS_URI && !expectComma && m_styleSheet) {
// FIXME: The completeURL call should be done when using the CSSFontFaceSrcValue,
// not when creating it.
parsedValue = CSSFontFaceSrcValue::create(m_styleSheet->completeURL(val->string));
uriValue = parsedValue;
allowFormat = true;
expectComma = true;
} else if (val->unit == CSSParserValue::Function) {
// There are two allowed functions: local() and format().
CSSParserValueList* args = val->function->args.get();
if (args && args->size() == 1) {
if (equalIgnoringCase(val->function->name, "local(") && !expectComma && (args->current()->unit == CSSPrimitiveValue::CSS_STRING || args->current()->unit == CSSPrimitiveValue::CSS_IDENT)) {
expectComma = true;
allowFormat = false;
CSSParserValue* a = args->current();
uriValue.clear();
parsedValue = CSSFontFaceSrcValue::createLocal(a->string);
} else if (allowFormat && uriValue && isValidFormatFunction(val)) {
expectComma = true;
allowFormat = false;
uriValue->setFormat(args->current()->string);
uriValue.clear();
m_valueList->next();
continue;
}
}
} else if (val->unit == CSSParserValue::Operator && val->iValue == ',' && expectComma) {
expectComma = false;
allowFormat = false;
uriValue.clear();
m_valueList->next();
continue;
}
if (parsedValue)
values->append(parsedValue.release());
else {
failed = true;
break;
}
m_valueList->next();
}
if (values->length() && !failed) {
addProperty(CSSPropertySrc, values.release(), m_important);
m_valueList->next();
return true;
}
return false;
}
bool CSSParser::parseFontFaceUnicodeRange()
{
RefPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
bool failed = false;
bool operatorExpected = false;
for (; m_valueList->current(); m_valueList->next(), operatorExpected = !operatorExpected) {
if (operatorExpected) {
if (m_valueList->current()->unit == CSSParserValue::Operator && m_valueList->current()->iValue == ',')
continue;
failed = true;
break;
}
if (m_valueList->current()->unit != CSSPrimitiveValue::CSS_UNICODE_RANGE) {
failed = true;
break;
}
String rangeString = m_valueList->current()->string;
UChar32 from = 0;
UChar32 to = 0;
unsigned length = rangeString.length();
if (length < 3) {
failed = true;
break;
}
unsigned i = 2;
while (i < length) {
UChar c = rangeString[i];
if (c == '-' || c == '?')
break;
from *= 16;
if (c >= '0' && c <= '9')
from += c - '0';
else if (c >= 'A' && c <= 'F')
from += 10 + c - 'A';
else if (c >= 'a' && c <= 'f')
from += 10 + c - 'a';
else {
failed = true;
break;
}
i++;
}
if (failed)
break;
if (i == length)
to = from;
else if (rangeString[i] == '?') {
unsigned span = 1;
while (i < length && rangeString[i] == '?') {
span *= 16;
from *= 16;
i++;
}
if (i < length)
failed = true;
to = from + span - 1;
} else {
if (length < i + 2) {
failed = true;
break;
}
i++;
while (i < length) {
UChar c = rangeString[i];
to *= 16;
if (c >= '0' && c <= '9')
to += c - '0';
else if (c >= 'A' && c <= 'F')
to += 10 + c - 'A';
else if (c >= 'a' && c <= 'f')
to += 10 + c - 'a';
else {
failed = true;
break;
}
i++;
}
if (failed)
break;
}
if (from <= to)
values->append(CSSUnicodeRangeValue::create(from, to));
}
if (failed || !values->length())
return false;
addProperty(CSSPropertyUnicodeRange, values.release(), m_important);
return true;
}
// Returns the number of characters which form a valid double
// and are terminated by the given terminator character
static int checkForValidDouble(const UChar* string, const UChar* end, const char terminator)
{
int length = end - string;
if (length < 1)
return 0;
bool decimalMarkSeen = false;
int processedLength = 0;
for (int i = 0; i < length; ++i) {
if (string[i] == terminator) {
processedLength = i;
break;
}
if (!isASCIIDigit(string[i])) {
if (!decimalMarkSeen && string[i] == '.')
decimalMarkSeen = true;
else
return 0;
}
}
if (decimalMarkSeen && processedLength == 1)
return 0;
return processedLength;
}
// Returns the number of characters consumed for parsing a valid double
// terminated by the given terminator character
static int parseDouble(const UChar* string, const UChar* end, const char terminator, double& value)
{
int length = checkForValidDouble(string, end, terminator);
if (!length)
return 0;
int position = 0;
double localValue = 0;
// The consumed characters here are guaranteed to be
// ASCII digits with or without a decimal mark
for (; position < length; ++position) {
if (string[position] == '.')
break;
localValue = localValue * 10 + string[position] - '0';
}
if (++position == length) {
value = localValue;
return length;
}
double fraction = 0;
double scale = 1;
while (position < length && scale < MAX_SCALE) {
fraction = fraction * 10 + string[position++] - '0';
scale *= 10;
}
value = localValue + fraction / scale;
return length;
}
static bool parseColorIntOrPercentage(const UChar*& string, const UChar* end, const char terminator, CSSPrimitiveValue::UnitTypes& expect, int& value)
{
const UChar* current = string;
double localValue = 0;
bool negative = false;
while (current != end && isHTMLSpace(*current))
current++;
if (current != end && *current == '-') {
negative = true;
current++;
}
if (current == end || !isASCIIDigit(*current))
return false;
while (current != end && isASCIIDigit(*current)) {
double newValue = localValue * 10 + *current++ - '0';
if (newValue >= 255) {
// Clamp values at 255.
localValue = 255;
while (current != end && isASCIIDigit(*current))
++current;
break;
}
localValue = newValue;
}
if (expect == CSSPrimitiveValue::CSS_NUMBER && (*current == '.' || *current == '%'))
return false;
if (*current == '.') {
// We already parsed the integral part, try to parse
// the fraction part of the percentage value.
double percentage = 0;
int numCharactersParsed = parseDouble(current, end, '%', percentage);
if (!numCharactersParsed)
return false;
current += numCharactersParsed;
if (*current != '%')
return false;
localValue += percentage;
}
if (expect == CSSPrimitiveValue::CSS_PERCENTAGE && *current != '%')
return false;
if (*current == '%') {
expect = CSSPrimitiveValue::CSS_PERCENTAGE;
localValue = localValue / 100.0 * 256.0;
// Clamp values at 255 for percentages over 100%
if (localValue > 255)
localValue = 255;
current++;
} else
expect = CSSPrimitiveValue::CSS_NUMBER;
while (current != end && isHTMLSpace(*current))
current++;
if (current == end || *current++ != terminator)
return false;
// Clamp negative values at zero.
value = negative ? 0 : static_cast<int>(localValue);
string = current;
return true;
}
static inline bool isTenthAlpha(const UChar* string, const int length)
{
// "0.X"
if (length == 3 && string[0] == '0' && string[1] == '.' && isASCIIDigit(string[2]))
return true;
// ".X"
if (length == 2 && string[0] == '.' && isASCIIDigit(string[1]))
return true;
return false;
}
static inline bool parseAlphaValue(const UChar*& string, const UChar* end, const char terminator, int& value)
{
while (string != end && isHTMLSpace(*string))
string++;
bool negative = false;
if (string != end && *string == '-') {
negative = true;
string++;
}
value = 0;
int length = end - string;
if (length < 2)
return false;
if (string[length - 1] != terminator)
return false;
if (string[0] != '0' && string[0] != '1' && string[0] != '.') {
if (checkForValidDouble(string, end, terminator)) {
value = negative ? 0 : 255;
string = end;
return true;
}
return false;
}
if (length == 2 && string[0] != '.') {
value = !negative && string[0] == '1' ? 255 : 0;
string = end;
return true;
}
if (isTenthAlpha(string, length - 1)) {
static const int tenthAlphaValues[] = { 0, 25, 51, 76, 102, 127, 153, 179, 204, 230 };
value = negative ? 0 : tenthAlphaValues[string[length - 2] - '0'];
string = end;
return true;
}
double alpha = 0;
if (!parseDouble(string, end, terminator, alpha))
return false;
value = negative ? 0 : static_cast<int>(alpha * nextafter(256.0, 0.0));
string = end;
return true;
}
static inline bool mightBeRGBA(const UChar* characters, unsigned length)
{
if (length < 5)
return false;
return characters[4] == '('
&& (characters[0] | 0x20) == 'r'
&& (characters[1] | 0x20) == 'g'
&& (characters[2] | 0x20) == 'b'
&& (characters[3] | 0x20) == 'a';
}
static inline bool mightBeRGB(const UChar* characters, unsigned length)
{
if (length < 4)
return false;
return characters[3] == '('
&& (characters[0] | 0x20) == 'r'
&& (characters[1] | 0x20) == 'g'
&& (characters[2] | 0x20) == 'b';
}
bool CSSParser::parseColor(const String &name, RGBA32& rgb, bool strict)
{
const UChar* characters = name.characters();
unsigned length = name.length();
CSSPrimitiveValue::UnitTypes expect = CSSPrimitiveValue::CSS_UNKNOWN;
if (!strict && length >= 3) {
if (name[0] == '#') {
if (Color::parseHexColor(characters + 1, length - 1, rgb))
return true;
} else {
if (Color::parseHexColor(characters, length, rgb))
return true;
}
}
// Try rgba() syntax.
if (mightBeRGBA(characters, length)) {
const UChar* current = characters + 5;
const UChar* end = characters + length;
int red;
int green;
int blue;
int alpha;
if (!parseColorIntOrPercentage(current, end, ',', expect, red))
return false;
if (!parseColorIntOrPercentage(current, end, ',', expect, green))
return false;
if (!parseColorIntOrPercentage(current, end, ',', expect, blue))
return false;
if (!parseAlphaValue(current, end, ')', alpha))
return false;
if (current != end)
return false;
rgb = makeRGBA(red, green, blue, alpha);
return true;
}
// Try rgb() syntax.
if (mightBeRGB(characters, length)) {
const UChar* current = characters + 4;
const UChar* end = characters + length;
int red;
int green;
int blue;
if (!parseColorIntOrPercentage(current, end, ',', expect, red))
return false;
if (!parseColorIntOrPercentage(current, end, ',', expect, green))
return false;
if (!parseColorIntOrPercentage(current, end, ')', expect, blue))
return false;
if (current != end)
return false;
rgb = makeRGB(red, green, blue);
return true;
}
// Try named colors.
Color tc;
tc.setNamedColor(name);
if (tc.isValid()) {
rgb = tc.rgb();
return true;
}
return false;
}
static inline int colorIntFromValue(CSSParserValue* v)
{
if (v->fValue <= 0.0)
return 0;
if (v->unit == CSSPrimitiveValue::CSS_PERCENTAGE) {
if (v->fValue >= 100.0)
return 255;
return static_cast<int>(v->fValue * 256.0 / 100.0);
}
if (v->fValue >= 255.0)
return 255;
return static_cast<int>(v->fValue);
}
bool CSSParser::parseColorParameters(CSSParserValue* value, int* colorArray, bool parseAlpha)
{
CSSParserValueList* args = value->function->args.get();
CSSParserValue* v = args->current();
Units unitType = FUnknown;
// Get the first value and its type
if (validUnit(v, FInteger, true))
unitType = FInteger;
else if (validUnit(v, FPercent, true))
unitType = FPercent;
else
return false;
colorArray[0] = colorIntFromValue(v);
for (int i = 1; i < 3; i++) {
v = args->next();
if (v->unit != CSSParserValue::Operator && v->iValue != ',')
return false;
v = args->next();
if (!validUnit(v, unitType, true))
return false;
colorArray[i] = colorIntFromValue(v);
}
if (parseAlpha) {
v = args->next();
if (v->unit != CSSParserValue::Operator && v->iValue != ',')
return false;
v = args->next();
if (!validUnit(v, FNumber, true))
return false;
// Convert the floating pointer number of alpha to an integer in the range [0, 256),
// with an equal distribution across all 256 values.
colorArray[3] = static_cast<int>(max(0.0, min(1.0, v->fValue)) * nextafter(256.0, 0.0));
}
return true;
}
// The CSS3 specification defines the format of a HSL color as
// hsl(<number>, <percent>, <percent>)
// and with alpha, the format is
// hsla(<number>, <percent>, <percent>, <number>)
// The first value, HUE, is in an angle with a value between 0 and 360
bool CSSParser::parseHSLParameters(CSSParserValue* value, double* colorArray, bool parseAlpha)
{
CSSParserValueList* args = value->function->args.get();
CSSParserValue* v = args->current();
// Get the first value
if (!validUnit(v, FNumber, true))
return false;
// normalize the Hue value and change it to be between 0 and 1.0
colorArray[0] = (((static_cast<int>(v->fValue) % 360) + 360) % 360) / 360.0;
for (int i = 1; i < 3; i++) {
v = args->next();
if (v->unit != CSSParserValue::Operator && v->iValue != ',')
return false;
v = args->next();
if (!validUnit(v, FPercent, true))
return false;
colorArray[i] = max(0.0, min(100.0, v->fValue)) / 100.0; // needs to be value between 0 and 1.0
}
if (parseAlpha) {
v = args->next();
if (v->unit != CSSParserValue::Operator && v->iValue != ',')
return false;
v = args->next();
if (!validUnit(v, FNumber, true))
return false;
colorArray[3] = max(0.0, min(1.0, v->fValue));
}
return true;
}
PassRefPtr<CSSPrimitiveValue> CSSParser::parseColor(CSSParserValue* value)
{
RGBA32 c = Color::transparent;
if (!parseColorFromValue(value ? value : m_valueList->current(), c))
return 0;
return primitiveValueCache()->createColorValue(c);
}
bool CSSParser::parseColorFromValue(CSSParserValue* value, RGBA32& c)
{
if (!m_strict && value->unit == CSSPrimitiveValue::CSS_NUMBER &&
value->fValue >= 0. && value->fValue < 1000000.) {
String str = String::format("%06d", (int)(value->fValue+.5));
if (!CSSParser::parseColor(str, c, m_strict))
return false;
} else if (value->unit == CSSPrimitiveValue::CSS_PARSER_HEXCOLOR ||
value->unit == CSSPrimitiveValue::CSS_IDENT ||
(!m_strict && value->unit == CSSPrimitiveValue::CSS_DIMENSION)) {
if (!CSSParser::parseColor(value->string, c, m_strict && value->unit == CSSPrimitiveValue::CSS_IDENT))
return false;
} else if (value->unit == CSSParserValue::Function &&
value->function->args != 0 &&
value->function->args->size() == 5 /* rgb + two commas */ &&
equalIgnoringCase(value->function->name, "rgb(")) {
int colorValues[3];
if (!parseColorParameters(value, colorValues, false))
return false;
c = makeRGB(colorValues[0], colorValues[1], colorValues[2]);
} else {
if (value->unit == CSSParserValue::Function &&
value->function->args != 0 &&
value->function->args->size() == 7 /* rgba + three commas */ &&
equalIgnoringCase(value->function->name, "rgba(")) {
int colorValues[4];
if (!parseColorParameters(value, colorValues, true))
return false;
c = makeRGBA(colorValues[0], colorValues[1], colorValues[2], colorValues[3]);
} else if (value->unit == CSSParserValue::Function &&
value->function->args != 0 &&
value->function->args->size() == 5 /* hsl + two commas */ &&
equalIgnoringCase(value->function->name, "hsl(")) {
double colorValues[3];
if (!parseHSLParameters(value, colorValues, false))
return false;
c = makeRGBAFromHSLA(colorValues[0], colorValues[1], colorValues[2], 1.0);
} else if (value->unit == CSSParserValue::Function &&
value->function->args != 0 &&
value->function->args->size() == 7 /* hsla + three commas */ &&
equalIgnoringCase(value->function->name, "hsla(")) {
double colorValues[4];
if (!parseHSLParameters(value, colorValues, true))
return false;
c = makeRGBAFromHSLA(colorValues[0], colorValues[1], colorValues[2], colorValues[3]);
} else
return false;
}
return true;
}
// This class tracks parsing state for shadow values. If it goes out of scope (e.g., due to an early return)
// without the allowBreak bit being set, then it will clean up all of the objects and destroy them.
struct ShadowParseContext {
ShadowParseContext(CSSPropertyID prop, CSSPrimitiveValueCache* primitiveValueCache)
: property(prop)
, m_primitiveValueCache(primitiveValueCache)
, allowX(true)
, allowY(false)
, allowBlur(false)
, allowSpread(false)
, allowColor(true)
, allowStyle(prop == CSSPropertyWebkitBoxShadow || prop == CSSPropertyBoxShadow)
, allowBreak(true)
{
}
bool allowLength() { return allowX || allowY || allowBlur || allowSpread; }
void commitValue()
{
// Handle the ,, case gracefully by doing nothing.
if (x || y || blur || spread || color || style) {
if (!values)
values = CSSValueList::createCommaSeparated();
// Construct the current shadow value and add it to the list.
values->append(ShadowValue::create(x.release(), y.release(), blur.release(), spread.release(), style.release(), color.release()));
}
// Now reset for the next shadow value.
x = 0;
y = 0;
blur = 0;
spread = 0;
style = 0;
color = 0;
allowX = true;
allowColor = true;
allowBreak = true;
allowY = false;
allowBlur = false;
allowSpread = false;
allowStyle = property == CSSPropertyWebkitBoxShadow || property == CSSPropertyBoxShadow;
}
void commitLength(CSSParserValue* v)
{
RefPtr<CSSPrimitiveValue> val = m_primitiveValueCache->createValue(v->fValue, (CSSPrimitiveValue::UnitTypes)v->unit);
if (allowX) {
x = val.release();
allowX = false;
allowY = true;
allowColor = false;
allowStyle = false;
allowBreak = false;
} else if (allowY) {
y = val.release();
allowY = false;
allowBlur = true;
allowColor = true;
allowStyle = property == CSSPropertyWebkitBoxShadow || property == CSSPropertyBoxShadow;
allowBreak = true;
} else if (allowBlur) {
blur = val.release();
allowBlur = false;
allowSpread = property == CSSPropertyWebkitBoxShadow || property == CSSPropertyBoxShadow;
} else if (allowSpread) {
spread = val.release();
allowSpread = false;
}
}
void commitColor(PassRefPtr<CSSPrimitiveValue> val)
{
color = val;
allowColor = false;
if (allowX) {
allowStyle = false;
allowBreak = false;
} else {
allowBlur = false;
allowSpread = false;
allowStyle = property == CSSPropertyWebkitBoxShadow || property == CSSPropertyBoxShadow;
}
}
void commitStyle(CSSParserValue* v)
{
style = m_primitiveValueCache->createIdentifierValue(v->id);
allowStyle = false;
if (allowX)
allowBreak = false;
else {
allowBlur = false;
allowSpread = false;
allowColor = false;
}
}
CSSPropertyID property;
CSSPrimitiveValueCache* m_primitiveValueCache;
RefPtr<CSSValueList> values;
RefPtr<CSSPrimitiveValue> x;
RefPtr<CSSPrimitiveValue> y;
RefPtr<CSSPrimitiveValue> blur;
RefPtr<CSSPrimitiveValue> spread;
RefPtr<CSSPrimitiveValue> style;
RefPtr<CSSPrimitiveValue> color;
bool allowX;
bool allowY;
bool allowBlur;
bool allowSpread;
bool allowColor;
bool allowStyle; // inset or not.
bool allowBreak;
};
bool CSSParser::parseShadow(int propId, bool important)
{
ShadowParseContext context(static_cast<CSSPropertyID>(propId), primitiveValueCache());
CSSParserValue* val;
while ((val = m_valueList->current())) {
// Check for a comma break first.
if (val->unit == CSSParserValue::Operator) {
if (val->iValue != ',' || !context.allowBreak)
// Other operators aren't legal or we aren't done with the current shadow
// value. Treat as invalid.
return false;
#if ENABLE(SVG)
// -webkit-svg-shadow does not support multiple values.
if (static_cast<CSSPropertyID>(propId) == CSSPropertyWebkitSvgShadow)
return false;
#endif
// The value is good. Commit it.
context.commitValue();
} else if (validUnit(val, FLength, true)) {
// We required a length and didn't get one. Invalid.
if (!context.allowLength())
return false;
// A length is allowed here. Construct the value and add it.
context.commitLength(val);
} else if (val->id == CSSValueInset) {
if (!context.allowStyle)
return false;
context.commitStyle(val);
} else {
// The only other type of value that's ok is a color value.
RefPtr<CSSPrimitiveValue> parsedColor;
bool isColor = ((val->id >= CSSValueAqua && val->id <= CSSValueWindowtext) || val->id == CSSValueMenu ||
(val->id >= CSSValueWebkitFocusRingColor && val->id <= CSSValueWebkitText && !m_strict));
if (isColor) {
if (!context.allowColor)
return false;
parsedColor = primitiveValueCache()->createIdentifierValue(val->id);
}
if (!parsedColor)
// It's not built-in. Try to parse it as a color.
parsedColor = parseColor(val);
if (!parsedColor || !context.allowColor)
return false; // This value is not a color or length and is invalid or
// it is a color, but a color isn't allowed at this point.
context.commitColor(parsedColor.release());
}
m_valueList->next();
}
if (context.allowBreak) {
context.commitValue();
if (context.values->length()) {
addProperty(propId, context.values.release(), important);
m_valueList->next();
return true;
}
}
return false;
}
bool CSSParser::parseReflect(int propId, bool important)
{
// box-reflect: <direction> <offset> <mask>
// Direction comes first.
CSSParserValue* val = m_valueList->current();
CSSReflectionDirection direction;
switch (val->id) {
case CSSValueAbove:
direction = ReflectionAbove;
break;
case CSSValueBelow:
direction = ReflectionBelow;
break;
case CSSValueLeft:
direction = ReflectionLeft;
break;
case CSSValueRight:
direction = ReflectionRight;
break;
default:
return false;
}
// The offset comes next.
val = m_valueList->next();
RefPtr<CSSPrimitiveValue> offset;
if (!val)
offset = primitiveValueCache()->createValue(0, CSSPrimitiveValue::CSS_PX);
else {
if (!validUnit(val, FLength | FPercent, m_strict))
return false;
offset = primitiveValueCache()->createValue(val->fValue, static_cast<CSSPrimitiveValue::UnitTypes>(val->unit));
}
// Now for the mask.
RefPtr<CSSValue> mask;
val = m_valueList->next();
if (val) {
if (!parseBorderImage(propId, important, mask))
return false;
}
RefPtr<CSSReflectValue> reflectValue = CSSReflectValue::create(direction, offset.release(), mask.release());
addProperty(propId, reflectValue.release(), important);
m_valueList->next();
return true;
}
struct BorderImageParseContext {
BorderImageParseContext(CSSPrimitiveValueCache* primitiveValueCache)
: m_primitiveValueCache(primitiveValueCache)
, m_allowBreak(false)
, m_allowNumber(false)
, m_allowSlash(false)
, m_allowWidth(false)
, m_allowRule(false)
, m_borderTop(0)
, m_borderRight(0)
, m_borderBottom(0)
, m_borderLeft(0)
, m_horizontalRule(0)
, m_verticalRule(0)
{}
bool allowBreak() const { return m_allowBreak; }
bool allowNumber() const { return m_allowNumber; }
bool allowSlash() const { return m_allowSlash; }
bool allowWidth() const { return m_allowWidth; }
bool allowRule() const { return m_allowRule; }
void commitImage(PassRefPtr<CSSValue> image) { m_image = image; m_allowNumber = true; }
void commitNumber(CSSParserValue* v)
{
PassRefPtr<CSSPrimitiveValue> val = m_primitiveValueCache->createValue(v->fValue, (CSSPrimitiveValue::UnitTypes)v->unit);
if (!m_top)
m_top = val;
else if (!m_right)
m_right = val;
else if (!m_bottom)
m_bottom = val;
else {
ASSERT(!m_left);
m_left = val;
}
m_allowBreak = m_allowSlash = m_allowRule = true;
m_allowNumber = !m_left;
}
void commitSlash() { m_allowBreak = m_allowSlash = m_allowNumber = false; m_allowWidth = true; }
void commitWidth(CSSParserValue* val)
{
if (!m_borderTop)
m_borderTop = val;
else if (!m_borderRight)
m_borderRight = val;
else if (!m_borderBottom)
m_borderBottom = val;
else {
ASSERT(!m_borderLeft);
m_borderLeft = val;
}
m_allowBreak = m_allowRule = true;
m_allowWidth = !m_borderLeft;
}
void commitRule(int keyword)
{
if (!m_horizontalRule)
m_horizontalRule = keyword;
else if (!m_verticalRule)
m_verticalRule = keyword;
m_allowRule = !m_verticalRule;
}
PassRefPtr<CSSValue> commitBorderImage(CSSParser* p, bool important)
{
// We need to clone and repeat values for any omissions.
if (!m_right) {
m_right = m_primitiveValueCache->createValue(m_top->getDoubleValue(), (CSSPrimitiveValue::UnitTypes)m_top->primitiveType());
m_bottom = m_primitiveValueCache->createValue(m_top->getDoubleValue(), (CSSPrimitiveValue::UnitTypes)m_top->primitiveType());
m_left = m_primitiveValueCache->createValue(m_top->getDoubleValue(), (CSSPrimitiveValue::UnitTypes)m_top->primitiveType());
}
if (!m_bottom) {
m_bottom = m_primitiveValueCache->createValue(m_top->getDoubleValue(), (CSSPrimitiveValue::UnitTypes)m_top->primitiveType());
m_left = m_primitiveValueCache->createValue(m_right->getDoubleValue(), (CSSPrimitiveValue::UnitTypes)m_right->primitiveType());
}
if (!m_left)
m_left = m_primitiveValueCache->createValue(m_right->getDoubleValue(), (CSSPrimitiveValue::UnitTypes)m_right->primitiveType());
// Now build a rect value to hold all four of our primitive values.
RefPtr<Rect> rect = Rect::create();
rect->setTop(m_top);
rect->setRight(m_right);
rect->setBottom(m_bottom);
rect->setLeft(m_left);
// Fill in STRETCH as the default if it wasn't specified.
if (!m_horizontalRule)
m_horizontalRule = CSSValueStretch;
// The vertical rule should match the horizontal rule if unspecified.
if (!m_verticalRule)
m_verticalRule = m_horizontalRule;
// Now we have to deal with the border widths. The best way to deal with these is to actually put these values into a value
// list and then make our parsing machinery do the parsing.
if (m_borderTop) {
CSSParserValueList newList;
newList.addValue(*m_borderTop);
if (m_borderRight)
newList.addValue(*m_borderRight);
if (m_borderBottom)
newList.addValue(*m_borderBottom);
if (m_borderLeft)
newList.addValue(*m_borderLeft);
CSSParserValueList* oldList = p->m_valueList;
p->m_valueList = &newList;
p->parseValue(CSSPropertyBorderWidth, important);
p->m_valueList = oldList;
}
// Make our new border image value now.
return CSSBorderImageValue::create(m_image, rect.release(), m_horizontalRule, m_verticalRule);
}
CSSPrimitiveValueCache* m_primitiveValueCache;
bool m_allowBreak;
bool m_allowNumber;
bool m_allowSlash;
bool m_allowWidth;
bool m_allowRule;
RefPtr<CSSValue> m_image;
RefPtr<CSSPrimitiveValue> m_top;
RefPtr<CSSPrimitiveValue> m_right;
RefPtr<CSSPrimitiveValue> m_bottom;
RefPtr<CSSPrimitiveValue> m_left;
CSSParserValue* m_borderTop;
CSSParserValue* m_borderRight;
CSSParserValue* m_borderBottom;
CSSParserValue* m_borderLeft;
int m_horizontalRule;
int m_verticalRule;
};
bool CSSParser::parseBorderImage(int propId, bool important, RefPtr<CSSValue>& result)
{
// Look for an image initially. If the first value is not a URI, then we're done.
BorderImageParseContext context(primitiveValueCache());
CSSParserValue* val = m_valueList->current();
if (val->unit == CSSPrimitiveValue::CSS_URI && m_styleSheet) {
// FIXME: The completeURL call should be done when using the CSSImageValue,
// not when creating it.
context.commitImage(CSSImageValue::create(m_styleSheet->completeURL(val->string)));
} else if (isGeneratedImageValue(val)) {
RefPtr<CSSValue> value;
if (parseGeneratedImage(value))
context.commitImage(value);
else
return false;
} else
return false;
while ((val = m_valueList->next())) {
if (context.allowNumber() && validUnit(val, FInteger | FNonNeg | FPercent, true)) {
context.commitNumber(val);
} else if (propId == CSSPropertyWebkitBorderImage && context.allowSlash() && val->unit == CSSParserValue::Operator && val->iValue == '/') {
context.commitSlash();
} else if (context.allowWidth() &&
(val->id == CSSValueThin || val->id == CSSValueMedium || val->id == CSSValueThick || validUnit(val, FLength, m_strict))) {
context.commitWidth(val);
} else if (context.allowRule() &&
(val->id == CSSValueStretch || val->id == CSSValueRound || val->id == CSSValueRepeat)) {
context.commitRule(val->id);
} else {
// Something invalid was encountered.
return false;
}
}
if (context.allowNumber() && propId != CSSPropertyWebkitBorderImage) {
// Allow the slices to be omitted for images that don't fit to a border. We just set the slices to be 0.
context.m_top = primitiveValueCache()->createValue(0, CSSPrimitiveValue::CSS_NUMBER);
context.m_allowBreak = true;
}
if (context.allowBreak()) {
// Need to fully commit as a single value.
result = context.commitBorderImage(this, important);
return true;
}
return false;
}
static void completeBorderRadii(RefPtr<CSSPrimitiveValue> radii[4])
{
if (radii[3])
return;
if (!radii[2]) {
if (!radii[1])
radii[1] = radii[0];
radii[2] = radii[0];
}
radii[3] = radii[1];
}
bool CSSParser::parseBorderRadius(int propId, bool important)
{
unsigned num = m_valueList->size();
if (num > 9)
return false;
ShorthandScope scope(this, propId);
RefPtr<CSSPrimitiveValue> radii[2][4];
unsigned indexAfterSlash = 0;
for (unsigned i = 0; i < num; ++i) {
CSSParserValue* value = m_valueList->valueAt(i);
if (value->unit == CSSParserValue::Operator) {
if (value->iValue != '/')
return false;
if (!i || indexAfterSlash || i + 1 == num || num > i + 5)
return false;
indexAfterSlash = i + 1;
completeBorderRadii(radii[0]);
continue;
}
if (i - indexAfterSlash >= 4)
return false;
if (!validUnit(value, FLength | FPercent, m_strict))
return false;
RefPtr<CSSPrimitiveValue> radius = primitiveValueCache()->createValue(value->fValue, static_cast<CSSPrimitiveValue::UnitTypes>(value->unit));
if (!indexAfterSlash) {
radii[0][i] = radius;
// Legacy syntax: -webkit-border-radius: l1 l2; is equivalent to border-radius: l1 / l2;
if (num == 2 && propId == CSSPropertyWebkitBorderRadius) {
indexAfterSlash = 1;
completeBorderRadii(radii[0]);
}
} else
radii[1][i - indexAfterSlash] = radius.release();
}
if (!indexAfterSlash) {
completeBorderRadii(radii[0]);
for (unsigned i = 0; i < 4; ++i)
radii[1][i] = radii[0][i];
} else
completeBorderRadii(radii[1]);
m_implicitShorthand = true;
addProperty(CSSPropertyBorderTopLeftRadius, primitiveValueCache()->createValue(Pair::create(radii[0][0].release(), radii[1][0].release())), important);
addProperty(CSSPropertyBorderTopRightRadius, primitiveValueCache()->createValue(Pair::create(radii[0][1].release(), radii[1][1].release())), important);
addProperty(CSSPropertyBorderBottomRightRadius, primitiveValueCache()->createValue(Pair::create(radii[0][2].release(), radii[1][2].release())), important);
addProperty(CSSPropertyBorderBottomLeftRadius, primitiveValueCache()->createValue(Pair::create(radii[0][3].release(), radii[1][3].release())), important);
m_implicitShorthand = false;
return true;
}
bool CSSParser::parseCounter(int propId, int defaultValue, bool important)
{
enum { ID, VAL } state = ID;
RefPtr<CSSValueList> list = CSSValueList::createCommaSeparated();
RefPtr<CSSPrimitiveValue> counterName;
while (true) {
CSSParserValue* val = m_valueList->current();
switch (state) {
case ID:
if (val && val->unit == CSSPrimitiveValue::CSS_IDENT) {
counterName = primitiveValueCache()->createValue(val->string, CSSPrimitiveValue::CSS_STRING);
state = VAL;
m_valueList->next();
continue;
}
break;
case VAL: {
int i = defaultValue;
if (val && val->unit == CSSPrimitiveValue::CSS_NUMBER) {
i = clampToInteger(val->fValue);
m_valueList->next();
}
list->append(primitiveValueCache()->createValue(Pair::create(counterName.release(),
primitiveValueCache()->createValue(i, CSSPrimitiveValue::CSS_NUMBER))));
state = ID;
continue;
}
}
break;
}
if (list->length() > 0) {
addProperty(propId, list.release(), important);
return true;
}
return false;
}
// This should go away once we drop support for -webkit-gradient
static PassRefPtr<CSSPrimitiveValue> parseDeprecatedGradientPoint(CSSParserValue* a, bool horizontal, CSSPrimitiveValueCache* primitiveValueCache)
{
RefPtr<CSSPrimitiveValue> result;
if (a->unit == CSSPrimitiveValue::CSS_IDENT) {
if ((equalIgnoringCase(a->string, "left") && horizontal) ||
(equalIgnoringCase(a->string, "top") && !horizontal))
result = primitiveValueCache->createValue(0., CSSPrimitiveValue::CSS_PERCENTAGE);
else if ((equalIgnoringCase(a->string, "right") && horizontal) ||
(equalIgnoringCase(a->string, "bottom") && !horizontal))
result = primitiveValueCache->createValue(100., CSSPrimitiveValue::CSS_PERCENTAGE);
else if (equalIgnoringCase(a->string, "center"))
result = primitiveValueCache->createValue(50., CSSPrimitiveValue::CSS_PERCENTAGE);
} else if (a->unit == CSSPrimitiveValue::CSS_NUMBER || a->unit == CSSPrimitiveValue::CSS_PERCENTAGE)
result = primitiveValueCache->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes)a->unit);
return result;
}
static bool parseDeprecatedGradientColorStop(CSSParser* p, CSSParserValue* a, CSSGradientColorStop& stop)
{
if (a->unit != CSSParserValue::Function)
return false;
if (!equalIgnoringCase(a->function->name, "from(") &&
!equalIgnoringCase(a->function->name, "to(") &&
!equalIgnoringCase(a->function->name, "color-stop("))
return false;
CSSParserValueList* args = a->function->args.get();
if (!args)
return false;
if (equalIgnoringCase(a->function->name, "from(") ||
equalIgnoringCase(a->function->name, "to(")) {
// The "from" and "to" stops expect 1 argument.
if (args->size() != 1)
return false;
if (equalIgnoringCase(a->function->name, "from("))
stop.m_position = p->primitiveValueCache()->createValue(0, CSSPrimitiveValue::CSS_NUMBER);
else
stop.m_position = p->primitiveValueCache()->createValue(1, CSSPrimitiveValue::CSS_NUMBER);
int id = args->current()->id;
if (id == CSSValueWebkitText || (id >= CSSValueAqua && id <= CSSValueWindowtext) || id == CSSValueMenu)
stop.m_color = p->primitiveValueCache()->createIdentifierValue(id);
else
stop.m_color = p->parseColor(args->current());
if (!stop.m_color)
return false;
}
// The "color-stop" function expects 3 arguments.
if (equalIgnoringCase(a->function->name, "color-stop(")) {
if (args->size() != 3)
return false;
CSSParserValue* stopArg = args->current();
if (stopArg->unit == CSSPrimitiveValue::CSS_PERCENTAGE)
stop.m_position = p->primitiveValueCache()->createValue(stopArg->fValue / 100, CSSPrimitiveValue::CSS_NUMBER);
else if (stopArg->unit == CSSPrimitiveValue::CSS_NUMBER)
stop.m_position = p->primitiveValueCache()->createValue(stopArg->fValue, CSSPrimitiveValue::CSS_NUMBER);
else
return false;
stopArg = args->next();
if (stopArg->unit != CSSParserValue::Operator || stopArg->iValue != ',')
return false;
stopArg = args->next();
int id = stopArg->id;
if (id == CSSValueWebkitText || (id >= CSSValueAqua && id <= CSSValueWindowtext) || id == CSSValueMenu)
stop.m_color = p->primitiveValueCache()->createIdentifierValue(id);
else
stop.m_color = p->parseColor(stopArg);
if (!stop.m_color)
return false;
}
return true;
}
bool CSSParser::parseDeprecatedGradient(RefPtr<CSSValue>& gradient)
{
// Walk the arguments.
CSSParserValueList* args = m_valueList->current()->function->args.get();
if (!args || args->size() == 0)
return false;
// The first argument is the gradient type. It is an identifier.
CSSGradientType gradientType;
CSSParserValue* a = args->current();
if (!a || a->unit != CSSPrimitiveValue::CSS_IDENT)
return false;
if (equalIgnoringCase(a->string, "linear"))
gradientType = CSSLinearGradient;
else if (equalIgnoringCase(a->string, "radial"))
gradientType = CSSRadialGradient;
else
return false;
RefPtr<CSSGradientValue> result;
switch (gradientType) {
case CSSLinearGradient:
result = CSSLinearGradientValue::create(NonRepeating, true);
break;
case CSSRadialGradient:
result = CSSRadialGradientValue::create(NonRepeating, true);
break;
}
// Comma.
a = args->next();
if (!a || a->unit != CSSParserValue::Operator || a->iValue != ',')
return false;
// Next comes the starting point for the gradient as an x y pair. There is no
// comma between the x and the y values.
// First X. It can be left, right, number or percent.
a = args->next();
if (!a)
return false;
RefPtr<CSSPrimitiveValue> point = parseDeprecatedGradientPoint(a, true, primitiveValueCache());
if (!point)
return false;
result->setFirstX(point.release());
// First Y. It can be top, bottom, number or percent.
a = args->next();
if (!a)
return false;
point = parseDeprecatedGradientPoint(a, false, primitiveValueCache());
if (!point)
return false;
result->setFirstY(point.release());
// Comma after the first point.
a = args->next();
if (!a || a->unit != CSSParserValue::Operator || a->iValue != ',')
return false;
// For radial gradients only, we now expect a numeric radius.
if (gradientType == CSSRadialGradient) {
a = args->next();
if (!a || a->unit != CSSPrimitiveValue::CSS_NUMBER)
return false;
static_cast<CSSRadialGradientValue*>(result.get())->setFirstRadius(primitiveValueCache()->createValue(a->fValue, CSSPrimitiveValue::CSS_NUMBER));
// Comma after the first radius.
a = args->next();
if (!a || a->unit != CSSParserValue::Operator || a->iValue != ',')
return false;
}
// Next is the ending point for the gradient as an x, y pair.
// Second X. It can be left, right, number or percent.
a = args->next();
if (!a)
return false;
point = parseDeprecatedGradientPoint(a, true, primitiveValueCache());
if (!point)
return false;
result->setSecondX(point.release());
// Second Y. It can be top, bottom, number or percent.
a = args->next();
if (!a)
return false;
point = parseDeprecatedGradientPoint(a, false, primitiveValueCache());
if (!point)
return false;
result->setSecondY(point.release());
// For radial gradients only, we now expect the second radius.
if (gradientType == CSSRadialGradient) {
// Comma after the second point.
a = args->next();
if (!a || a->unit != CSSParserValue::Operator || a->iValue != ',')
return false;
a = args->next();
if (!a || a->unit != CSSPrimitiveValue::CSS_NUMBER)
return false;
static_cast<CSSRadialGradientValue*>(result.get())->setSecondRadius(primitiveValueCache()->createValue(a->fValue, CSSPrimitiveValue::CSS_NUMBER));
}
// We now will accept any number of stops (0 or more).
a = args->next();
while (a) {
// Look for the comma before the next stop.
if (a->unit != CSSParserValue::Operator || a->iValue != ',')
return false;
// Now examine the stop itself.
a = args->next();
if (!a)
return false;
// The function name needs to be one of "from", "to", or "color-stop."
CSSGradientColorStop stop;
if (!parseDeprecatedGradientColorStop(this, a, stop))
return false;
result->addStop(stop);
// Advance
a = args->next();
}
gradient = result.release();
return true;
}
static PassRefPtr<CSSPrimitiveValue> valueFromSideKeyword(CSSParserValue* a, bool& isHorizontal, CSSPrimitiveValueCache* primitiveValueCache)
{
if (a->unit != CSSPrimitiveValue::CSS_IDENT)
return 0;
switch (a->id) {
case CSSValueLeft:
case CSSValueRight:
isHorizontal = true;
break;
case CSSValueTop:
case CSSValueBottom:
isHorizontal = false;
break;
default:
return 0;
}
return primitiveValueCache->createIdentifierValue(a->id);
}
static PassRefPtr<CSSPrimitiveValue> parseGradientColorOrKeyword(CSSParser* p, CSSParserValue* value)
{
int id = value->id;
if (id == CSSValueWebkitText || (id >= CSSValueAqua && id <= CSSValueWindowtext) || id == CSSValueMenu)
return p->primitiveValueCache()->createIdentifierValue(id);
return p->parseColor(value);
}
bool CSSParser::parseLinearGradient(RefPtr<CSSValue>& gradient, CSSGradientRepeat repeating)
{
RefPtr<CSSLinearGradientValue> result = CSSLinearGradientValue::create(repeating);
// Walk the arguments.
CSSParserValueList* args = m_valueList->current()->function->args.get();
if (!args || !args->size())
return false;
CSSParserValue* a = args->current();
if (!a)
return false;
bool expectComma = false;
// Look for angle.
if (validUnit(a, FAngle, true)) {
result->setAngle(primitiveValueCache()->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes)a->unit));
a = args->next();
expectComma = true;
} else {
// Look one or two optional keywords that indicate a side or corner.
RefPtr<CSSPrimitiveValue> startX, startY;
RefPtr<CSSPrimitiveValue> location;
bool isHorizontal = false;
if ((location = valueFromSideKeyword(a, isHorizontal, primitiveValueCache()))) {
if (isHorizontal)
startX = location;
else
startY = location;
a = args->next();
if (a) {
if ((location = valueFromSideKeyword(a, isHorizontal, primitiveValueCache()))) {
if (isHorizontal) {
if (startX)
return false;
startX = location;
} else {
if (startY)
return false;
startY = location;
}
a = args->next();
}
}
expectComma = true;
}
if (!startX && !startY)
startY = primitiveValueCache()->createIdentifierValue(CSSValueTop);
result->setFirstX(startX.release());
result->setFirstY(startY.release());
}
if (!parseGradientColorStops(args, result.get(), expectComma))
return false;
Vector<CSSGradientColorStop>& stops = result->stops();
if (stops.isEmpty())
return false;
gradient = result.release();
return true;
}
bool CSSParser::parseRadialGradient(RefPtr<CSSValue>& gradient, CSSGradientRepeat repeating)
{
RefPtr<CSSRadialGradientValue> result = CSSRadialGradientValue::create(repeating);
// Walk the arguments.
CSSParserValueList* args = m_valueList->current()->function->args.get();
if (!args || !args->size())
return false;
CSSParserValue* a = args->current();
if (!a)
return false;
bool expectComma = false;
// Optional background-position
RefPtr<CSSValue> centerX;
RefPtr<CSSValue> centerY;
// parseFillPosition advances the args next pointer.
parseFillPosition(args, centerX, centerY);
a = args->current();
if (centerX || centerY) {
// Comma
if (a->unit != CSSParserValue::Operator || a->iValue != ',')
return false;
a = args->next();
if (!a)
return false;
}
ASSERT(!centerX || centerX->isPrimitiveValue());
ASSERT(!centerY || centerY->isPrimitiveValue());
result->setFirstX(static_cast<CSSPrimitiveValue*>(centerX.get()));
result->setSecondX(static_cast<CSSPrimitiveValue*>(centerX.get()));
// CSS3 radial gradients always share the same start and end point.
result->setFirstY(static_cast<CSSPrimitiveValue*>(centerY.get()));
result->setSecondY(static_cast<CSSPrimitiveValue*>(centerY.get()));
RefPtr<CSSPrimitiveValue> shapeValue;
RefPtr<CSSPrimitiveValue> sizeValue;
// Optional shape and/or size in any order.
for (int i = 0; i < 2; ++i) {
if (a->unit != CSSPrimitiveValue::CSS_IDENT)
break;
bool foundValue = false;
switch (a->id) {
case CSSValueCircle:
case CSSValueEllipse:
shapeValue = primitiveValueCache()->createIdentifierValue(a->id);
foundValue = true;
break;
case CSSValueClosestSide:
case CSSValueClosestCorner:
case CSSValueFarthestSide:
case CSSValueFarthestCorner:
case CSSValueContain:
case CSSValueCover:
sizeValue = primitiveValueCache()->createIdentifierValue(a->id);
foundValue = true;
break;
}
if (foundValue) {
a = args->next();
if (!a)
return false;
expectComma = true;
}
}
result->setShape(shapeValue);
result->setSizingBehavior(sizeValue);
// Or, two lengths or percentages
RefPtr<CSSPrimitiveValue> horizontalSize;
RefPtr<CSSPrimitiveValue> verticalSize;
if (!shapeValue && !sizeValue) {
if (validUnit(a, FLength | FPercent, m_strict)) {
horizontalSize = primitiveValueCache()->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes) a->unit);
a = args->next();
if (!a)
return false;
expectComma = true;
}
if (validUnit(a, FLength | FPercent, m_strict)) {
verticalSize = primitiveValueCache()->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes) a->unit);
a = args->next();
if (!a)
return false;
expectComma = true;
}
}
// Must have neither or both.
if (!horizontalSize != !verticalSize)
return false;
result->setEndHorizontalSize(horizontalSize);
result->setEndVerticalSize(verticalSize);
if (!parseGradientColorStops(args, result.get(), expectComma))
return false;
gradient = result.release();
return true;
}
bool CSSParser::parseGradientColorStops(CSSParserValueList* valueList, CSSGradientValue* gradient, bool expectComma)
{
CSSParserValue* a = valueList->current();
// Now look for color stops.
while (a) {
// Look for the comma before the next stop.
if (expectComma) {
if (a->unit != CSSParserValue::Operator || a->iValue != ',')
return false;
a = valueList->next();
if (!a)
return false;
}
// <color-stop> = <color> [ <percentage> | <length> ]?
CSSGradientColorStop stop;
stop.m_color = parseGradientColorOrKeyword(this, a);
if (!stop.m_color)
return false;
a = valueList->next();
if (a) {
if (validUnit(a, FLength | FPercent, m_strict)) {
stop.m_position = primitiveValueCache()->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes)a->unit);
a = valueList->next();
}
}
gradient->addStop(stop);
expectComma = true;
}
// Must have 2 or more stops to be valid.
return gradient->stops().size() > 1;
}
bool CSSParser::isGeneratedImageValue(CSSParserValue* val) const
{
if (val->unit != CSSParserValue::Function)
return false;
return equalIgnoringCase(val->function->name, "-webkit-gradient(")
|| equalIgnoringCase(val->function->name, "-webkit-linear-gradient(")
|| equalIgnoringCase(val->function->name, "-webkit-repeating-linear-gradient(")
|| equalIgnoringCase(val->function->name, "-webkit-radial-gradient(")
|| equalIgnoringCase(val->function->name, "-webkit-repeating-radial-gradient(")
|| equalIgnoringCase(val->function->name, "-webkit-canvas(");
}
bool CSSParser::parseGeneratedImage(RefPtr<CSSValue>& value)
{
CSSParserValue* val = m_valueList->current();
if (val->unit != CSSParserValue::Function)
return false;
if (equalIgnoringCase(val->function->name, "-webkit-gradient("))
return parseDeprecatedGradient(value);
if (equalIgnoringCase(val->function->name, "-webkit-linear-gradient("))
return parseLinearGradient(value, NonRepeating);
if (equalIgnoringCase(val->function->name, "-webkit-repeating-linear-gradient("))
return parseLinearGradient(value, Repeating);
if (equalIgnoringCase(val->function->name, "-webkit-radial-gradient("))
return parseRadialGradient(value, NonRepeating);
if (equalIgnoringCase(val->function->name, "-webkit-repeating-radial-gradient("))
return parseRadialGradient(value, Repeating);
if (equalIgnoringCase(val->function->name, "-webkit-canvas("))
return parseCanvas(value);
return false;
}
bool CSSParser::parseCanvas(RefPtr<CSSValue>& canvas)
{
RefPtr<CSSCanvasValue> result = CSSCanvasValue::create();
// Walk the arguments.
CSSParserValueList* args = m_valueList->current()->function->args.get();
if (!args || args->size() != 1)
return false;
// The first argument is the canvas name. It is an identifier.
CSSParserValue* a = args->current();
if (!a || a->unit != CSSPrimitiveValue::CSS_IDENT)
return false;
result->setName(a->string);
canvas = result;
return true;
}
class TransformOperationInfo {
public:
TransformOperationInfo(const CSSParserString& name)
: m_type(WebKitCSSTransformValue::UnknownTransformOperation)
, m_argCount(1)
, m_allowSingleArgument(false)
, m_unit(CSSParser::FUnknown)
{
if (equalIgnoringCase(name, "scale(") || equalIgnoringCase(name, "scalex(") || equalIgnoringCase(name, "scaley(") || equalIgnoringCase(name, "scalez(")) {
m_unit = CSSParser::FNumber;
if (equalIgnoringCase(name, "scale("))
m_type = WebKitCSSTransformValue::ScaleTransformOperation;
else if (equalIgnoringCase(name, "scalex("))
m_type = WebKitCSSTransformValue::ScaleXTransformOperation;
else if (equalIgnoringCase(name, "scaley("))
m_type = WebKitCSSTransformValue::ScaleYTransformOperation;
else
m_type = WebKitCSSTransformValue::ScaleZTransformOperation;
} else if (equalIgnoringCase(name, "scale3d(")) {
m_type = WebKitCSSTransformValue::Scale3DTransformOperation;
m_argCount = 5;
m_unit = CSSParser::FNumber;
} else if (equalIgnoringCase(name, "rotate(")) {
m_type = WebKitCSSTransformValue::RotateTransformOperation;
m_unit = CSSParser::FAngle;
} else if (equalIgnoringCase(name, "rotatex(") ||
equalIgnoringCase(name, "rotatey(") ||
equalIgnoringCase(name, "rotatez(")) {
m_unit = CSSParser::FAngle;
if (equalIgnoringCase(name, "rotatex("))
m_type = WebKitCSSTransformValue::RotateXTransformOperation;
else if (equalIgnoringCase(name, "rotatey("))
m_type = WebKitCSSTransformValue::RotateYTransformOperation;
else
m_type = WebKitCSSTransformValue::RotateZTransformOperation;
} else if (equalIgnoringCase(name, "rotate3d(")) {
m_type = WebKitCSSTransformValue::Rotate3DTransformOperation;
m_argCount = 7;
m_unit = CSSParser::FNumber;
} else if (equalIgnoringCase(name, "skew(") || equalIgnoringCase(name, "skewx(") || equalIgnoringCase(name, "skewy(")) {
m_unit = CSSParser::FAngle;
if (equalIgnoringCase(name, "skew("))
m_type = WebKitCSSTransformValue::SkewTransformOperation;
else if (equalIgnoringCase(name, "skewx("))
m_type = WebKitCSSTransformValue::SkewXTransformOperation;
else
m_type = WebKitCSSTransformValue::SkewYTransformOperation;
} else if (equalIgnoringCase(name, "translate(") || equalIgnoringCase(name, "translatex(") || equalIgnoringCase(name, "translatey(") || equalIgnoringCase(name, "translatez(")) {
m_unit = CSSParser::FLength | CSSParser::FPercent;
if (equalIgnoringCase(name, "translate("))
m_type = WebKitCSSTransformValue::TranslateTransformOperation;
else if (equalIgnoringCase(name, "translatex("))
m_type = WebKitCSSTransformValue::TranslateXTransformOperation;
else if (equalIgnoringCase(name, "translatey("))
m_type = WebKitCSSTransformValue::TranslateYTransformOperation;
else
m_type = WebKitCSSTransformValue::TranslateZTransformOperation;
} else if (equalIgnoringCase(name, "translate3d(")) {
m_type = WebKitCSSTransformValue::Translate3DTransformOperation;
m_argCount = 5;
m_unit = CSSParser::FLength | CSSParser::FPercent;
} else if (equalIgnoringCase(name, "matrix(")) {
m_type = WebKitCSSTransformValue::MatrixTransformOperation;
m_argCount = 11;
m_unit = CSSParser::FNumber;
} else if (equalIgnoringCase(name, "matrix3d(")) {
m_type = WebKitCSSTransformValue::Matrix3DTransformOperation;
m_argCount = 31;
m_unit = CSSParser::FNumber;
} else if (equalIgnoringCase(name, "perspective(")) {
m_type = WebKitCSSTransformValue::PerspectiveTransformOperation;
m_unit = CSSParser::FNumber;
}
if (equalIgnoringCase(name, "scale(") || equalIgnoringCase(name, "skew(") || equalIgnoringCase(name, "translate(")) {
m_allowSingleArgument = true;
m_argCount = 3;
}
}
WebKitCSSTransformValue::TransformOperationType type() const { return m_type; }
unsigned argCount() const { return m_argCount; }
CSSParser::Units unit() const { return m_unit; }
bool unknown() const { return m_type == WebKitCSSTransformValue::UnknownTransformOperation; }
bool hasCorrectArgCount(unsigned argCount) { return m_argCount == argCount || (m_allowSingleArgument && argCount == 1); }
private:
WebKitCSSTransformValue::TransformOperationType m_type;
unsigned m_argCount;
bool m_allowSingleArgument;
CSSParser::Units m_unit;
};
PassRefPtr<CSSValueList> CSSParser::parseTransform()
{
if (!m_valueList)
return 0;
// The transform is a list of functional primitives that specify transform operations.
// We collect a list of WebKitCSSTransformValues, where each value specifies a single operation.
RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
if (value->unit != CSSParserValue::Function || !value->function)
return 0;
// Every primitive requires at least one argument.
CSSParserValueList* args = value->function->args.get();
if (!args)
return 0;
// See if the specified primitive is one we understand.
TransformOperationInfo info(value->function->name);
if (info.unknown())
return 0;
if (!info.hasCorrectArgCount(args->size()))
return 0;
// Create the new WebKitCSSTransformValue for this operation and add it to our list.
RefPtr<WebKitCSSTransformValue> transformValue = WebKitCSSTransformValue::create(info.type());
list->append(transformValue);
// Snag our values.
CSSParserValue* a = args->current();
unsigned argNumber = 0;
while (a) {
CSSParser::Units unit = info.unit();
if (info.type() == WebKitCSSTransformValue::Rotate3DTransformOperation && argNumber == 3) {
// 4th param of rotate3d() is an angle rather than a bare number, validate it as such
if (!validUnit(a, FAngle, true))
return 0;
} else if (info.type() == WebKitCSSTransformValue::Translate3DTransformOperation && argNumber == 2) {
// 3rd param of translate3d() cannot be a percentage
if (!validUnit(a, FLength, true))
return 0;
} else if (info.type() == WebKitCSSTransformValue::TranslateZTransformOperation && argNumber == 0) {
// 1st param of translateZ() cannot be a percentage
if (!validUnit(a, FLength, true))
return 0;
} else if (info.type() == WebKitCSSTransformValue::PerspectiveTransformOperation && argNumber == 0) {
// 1st param of perspective() must be a non-negative number (deprecated) or length.
if (!validUnit(a, FNumber | FLength | FNonNeg, true))
return 0;
} else if (!validUnit(a, unit, true))
return 0;
// Add the value to the current transform operation.
transformValue->append(primitiveValueCache()->createValue(a->fValue, (CSSPrimitiveValue::UnitTypes) a->unit));
a = args->next();
if (!a)
break;
if (a->unit != CSSParserValue::Operator || a->iValue != ',')
return 0;
a = args->next();
argNumber++;
}
}
return list.release();
}
bool CSSParser::parseTransformOrigin(int propId, int& propId1, int& propId2, int& propId3, RefPtr<CSSValue>& value, RefPtr<CSSValue>& value2, RefPtr<CSSValue>& value3)
{
propId1 = propId;
propId2 = propId;
propId3 = propId;
if (propId == CSSPropertyWebkitTransformOrigin) {
propId1 = CSSPropertyWebkitTransformOriginX;
propId2 = CSSPropertyWebkitTransformOriginY;
propId3 = CSSPropertyWebkitTransformOriginZ;
}
switch (propId) {
case CSSPropertyWebkitTransformOrigin:
if (!parseTransformOriginShorthand(value, value2, value3))
return false;
// parseTransformOriginShorthand advances the m_valueList pointer
break;
case CSSPropertyWebkitTransformOriginX: {
value = parseFillPositionX(m_valueList);
if (value)
m_valueList->next();
break;
}
case CSSPropertyWebkitTransformOriginY: {
value = parseFillPositionY(m_valueList);
if (value)
m_valueList->next();
break;
}
case CSSPropertyWebkitTransformOriginZ: {
if (validUnit(m_valueList->current(), FLength, m_strict))
value = primitiveValueCache()->createValue(m_valueList->current()->fValue, (CSSPrimitiveValue::UnitTypes)m_valueList->current()->unit);
if (value)
m_valueList->next();
break;
}
}
return value;
}
bool CSSParser::parsePerspectiveOrigin(int propId, int& propId1, int& propId2, RefPtr<CSSValue>& value, RefPtr<CSSValue>& value2)
{
propId1 = propId;
propId2 = propId;
if (propId == CSSPropertyWebkitPerspectiveOrigin) {
propId1 = CSSPropertyWebkitPerspectiveOriginX;
propId2 = CSSPropertyWebkitPerspectiveOriginY;
}
switch (propId) {
case CSSPropertyWebkitPerspectiveOrigin:
parseFillPosition(m_valueList, value, value2);
break;
case CSSPropertyWebkitPerspectiveOriginX: {
value = parseFillPositionX(m_valueList);
if (value)
m_valueList->next();
break;
}
case CSSPropertyWebkitPerspectiveOriginY: {
value = parseFillPositionY(m_valueList);
if (value)
m_valueList->next();
break;
}
}
return value;
}
bool CSSParser::parseTextEmphasisStyle(bool important)
{
unsigned valueListSize = m_valueList->size();
RefPtr<CSSPrimitiveValue> fill;
RefPtr<CSSPrimitiveValue> shape;
for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
if (value->unit == CSSPrimitiveValue::CSS_STRING) {
if (fill || shape || (valueListSize != 1 && !inShorthand()))
return false;
addProperty(CSSPropertyWebkitTextEmphasisStyle, primitiveValueCache()->createValue(value->string, CSSPrimitiveValue::CSS_STRING), important);
m_valueList->next();
return true;
}
if (value->id == CSSValueNone) {
if (fill || shape || (valueListSize != 1 && !inShorthand()))
return false;
addProperty(CSSPropertyWebkitTextEmphasisStyle, primitiveValueCache()->createIdentifierValue(CSSValueNone), important);
m_valueList->next();
return true;
}
if (value->id == CSSValueOpen || value->id == CSSValueFilled) {
if (fill)
return false;
fill = primitiveValueCache()->createIdentifierValue(value->id);
} else if (value->id == CSSValueDot || value->id == CSSValueCircle || value->id == CSSValueDoubleCircle || value->id == CSSValueTriangle || value->id == CSSValueSesame) {
if (shape)
return false;
shape = primitiveValueCache()->createIdentifierValue(value->id);
} else if (!inShorthand())
return false;
else
break;
}
if (fill && shape) {
RefPtr<CSSValueList> parsedValues = CSSValueList::createSpaceSeparated();
parsedValues->append(fill.release());
parsedValues->append(shape.release());
addProperty(CSSPropertyWebkitTextEmphasisStyle, parsedValues.release(), important);
return true;
}
if (fill) {
addProperty(CSSPropertyWebkitTextEmphasisStyle, fill.release(), important);
return true;
}
if (shape) {
addProperty(CSSPropertyWebkitTextEmphasisStyle, shape.release(), important);
return true;
}
return false;
}
bool CSSParser::parseLineBoxContain(bool important)
{
LineBoxContain lineBoxContain = LineBoxContainNone;
for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
if (value->id == CSSValueBlock) {
if (lineBoxContain & LineBoxContainBlock)
return false;
lineBoxContain |= LineBoxContainBlock;
} else if (value->id == CSSValueInline) {
if (lineBoxContain & LineBoxContainInline)
return false;
lineBoxContain |= LineBoxContainInline;
} else if (value->id == CSSValueFont) {
if (lineBoxContain & LineBoxContainFont)
return false;
lineBoxContain |= LineBoxContainFont;
} else if (value->id == CSSValueGlyphs) {
if (lineBoxContain & LineBoxContainGlyphs)
return false;
lineBoxContain |= LineBoxContainGlyphs;
} else if (value->id == CSSValueReplaced) {
if (lineBoxContain & LineBoxContainReplaced)
return false;
lineBoxContain |= LineBoxContainReplaced;
} else if (value->id == CSSValueInlineBox) {
if (lineBoxContain & LineBoxContainInlineBox)
return false;
lineBoxContain |= LineBoxContainInlineBox;
} else
return false;
}
if (!lineBoxContain)
return false;
addProperty(CSSPropertyWebkitLineBoxContain, CSSLineBoxContainValue::create(lineBoxContain), important);
return true;
}
static inline int yyerror(const char*) { return 1; }
#define END_TOKEN 0
#include "CSSGrammar.h"
int CSSParser::lex(void* yylvalWithoutType)
{
YYSTYPE* yylval = static_cast<YYSTYPE*>(yylvalWithoutType);
int length;
lex();
UChar* t = text(&length);
switch (token()) {
case WHITESPACE:
case SGML_CD:
case INCLUDES:
case DASHMATCH:
break;
case URI:
case STRING:
case IDENT:
case NTH:
case HEX:
case IDSEL:
case DIMEN:
case UNICODERANGE:
case FUNCTION:
case ANYFUNCTION:
case NOTFUNCTION:
yylval->string.characters = t;
yylval->string.length = length;
break;
case IMPORT_SYM:
case PAGE_SYM:
case MEDIA_SYM:
case FONT_FACE_SYM:
case CHARSET_SYM:
case NAMESPACE_SYM:
case WEBKIT_KEYFRAMES_SYM:
case IMPORTANT_SYM:
break;
case QEMS:
length--;
case GRADS:
case TURNS:
length--;
case DEGS:
case RADS:
case KHERTZ:
case REMS:
length--;
case MSECS:
case HERTZ:
case EMS:
case EXS:
case PXS:
case CMS:
case MMS:
case INS:
case PTS:
case PCS:
length--;
case SECS:
case PERCENTAGE:
length--;
case FLOATTOKEN:
case INTEGER:
yylval->number = charactersToDouble(t, length);
break;
default:
break;
}
return token();
}
void CSSParser::recheckAtKeyword(const UChar* str, int len)
{
String ruleName(str, len);
if (equalIgnoringCase(ruleName, "@import"))
yyTok = IMPORT_SYM;
else if (equalIgnoringCase(ruleName, "@page"))
yyTok = PAGE_SYM;
else if (equalIgnoringCase(ruleName, "@media"))
yyTok = MEDIA_SYM;
else if (equalIgnoringCase(ruleName, "@font-face"))
yyTok = FONT_FACE_SYM;
else if (equalIgnoringCase(ruleName, "@charset"))
yyTok = CHARSET_SYM;
else if (equalIgnoringCase(ruleName, "@namespace"))
yyTok = NAMESPACE_SYM;
else if (equalIgnoringCase(ruleName, "@-webkit-keyframes"))
yyTok = WEBKIT_KEYFRAMES_SYM;
else if (equalIgnoringCase(ruleName, "@-webkit-mediaquery"))
yyTok = WEBKIT_MEDIAQUERY_SYM;
}
UChar* CSSParser::text(int *length)
{
UChar* start = yytext;
int l = yyleng;
switch (yyTok) {
case STRING:
l--;
/* nobreak */
case HEX:
case IDSEL:
start++;
l--;
break;
case URI:
// "url("{w}{string}{w}")"
// "url("{w}{url}{w}")"
// strip "url(" and ")"
start += 4;
l -= 5;
// strip {w}
while (l && isHTMLSpace(*start)) {
++start;
--l;
}
while (l && isHTMLSpace(start[l - 1]))
--l;
if (l && (*start == '"' || *start == '\'')) {
ASSERT(l >= 2 && start[l - 1] == *start);
++start;
l -= 2;
}
break;
default:
break;
}
// process escapes
UChar* out = start;
UChar* escape = 0;
bool sawEscape = false;
for (int i = 0; i < l; i++) {
UChar* current = start + i;
if (escape == current - 1) {
if (isASCIIHexDigit(*current))
continue;
if (yyTok == STRING &&
(*current == '\n' || *current == '\r' || *current == '\f')) {
// ### handle \r\n case
if (*current != '\r')
escape = 0;
continue;
}
// in all other cases copy the char to output
// ###
*out++ = *current;
escape = 0;
continue;
}
if (escape == current - 2 && yyTok == STRING &&
*(current-1) == '\r' && *current == '\n') {
escape = 0;
continue;
}
if (escape > current - 7 && isASCIIHexDigit(*current))
continue;
if (escape) {
// add escaped char
unsigned uc = 0;
escape++;
while (escape < current) {
uc *= 16;
uc += toASCIIHexValue(*escape);
escape++;
}
// can't handle chars outside ucs2
if (uc > 0xffff)
uc = 0xfffd;
*out++ = uc;
escape = 0;
if (isHTMLSpace(*current))
continue;
}
if (!escape && *current == '\\') {
escape = current;
sawEscape = true;
continue;
}
*out++ = *current;
}
if (escape) {
// add escaped char
unsigned uc = 0;
escape++;
while (escape < start+l) {
uc *= 16;
uc += toASCIIHexValue(*escape);
escape++;
}
// can't handle chars outside ucs2
if (uc > 0xffff)
uc = 0xfffd;
*out++ = uc;
}
*length = out - start;
// If we have an unrecognized @-keyword, and if we handled any escapes at all, then
// we should attempt to adjust yyTok to the correct type.
if (yyTok == ATKEYWORD && sawEscape)
recheckAtKeyword(start, *length);
return start;
}
void CSSParser::countLines()
{
for (UChar* current = yytext; current < yytext + yyleng; ++current) {
if (*current == '\n')
++m_lineNumber;
}
}
CSSParserSelector* CSSParser::createFloatingSelector()
{
CSSParserSelector* selector = new CSSParserSelector;
m_floatingSelectors.add(selector);
return selector;
}
PassOwnPtr<CSSParserSelector> CSSParser::sinkFloatingSelector(CSSParserSelector* selector)
{
if (selector) {
ASSERT(m_floatingSelectors.contains(selector));
m_floatingSelectors.remove(selector);
}
return adoptPtr(selector);
}
Vector<OwnPtr<CSSParserSelector> >* CSSParser::createFloatingSelectorVector()
{
Vector<OwnPtr<CSSParserSelector> >* selectorVector = new Vector<OwnPtr<CSSParserSelector> >;
m_floatingSelectorVectors.add(selectorVector);
return selectorVector;
}
PassOwnPtr<Vector<OwnPtr<CSSParserSelector> > > CSSParser::sinkFloatingSelectorVector(Vector<OwnPtr<CSSParserSelector> >* selectorVector)
{
if (selectorVector) {
ASSERT(m_floatingSelectorVectors.contains(selectorVector));
m_floatingSelectorVectors.remove(selectorVector);
}
return adoptPtr(selectorVector);
}
CSSParserValueList* CSSParser::createFloatingValueList()
{
CSSParserValueList* list = new CSSParserValueList;
m_floatingValueLists.add(list);
return list;
}
CSSParserValueList* CSSParser::sinkFloatingValueList(CSSParserValueList* list)
{
if (list) {
ASSERT(m_floatingValueLists.contains(list));
m_floatingValueLists.remove(list);
}
return list;
}
CSSParserFunction* CSSParser::createFloatingFunction()
{
CSSParserFunction* function = new CSSParserFunction;
m_floatingFunctions.add(function);
return function;
}
CSSParserFunction* CSSParser::sinkFloatingFunction(CSSParserFunction* function)
{
if (function) {
ASSERT(m_floatingFunctions.contains(function));
m_floatingFunctions.remove(function);
}
return function;
}
CSSParserValue& CSSParser::sinkFloatingValue(CSSParserValue& value)
{
if (value.unit == CSSParserValue::Function) {
ASSERT(m_floatingFunctions.contains(value.function));
m_floatingFunctions.remove(value.function);
}
return value;
}
MediaQueryExp* CSSParser::createFloatingMediaQueryExp(const AtomicString& mediaFeature, CSSParserValueList* values)
{
m_floatingMediaQueryExp = MediaQueryExp::create(mediaFeature, values);
return m_floatingMediaQueryExp.get();
}
PassOwnPtr<MediaQueryExp> CSSParser::sinkFloatingMediaQueryExp(MediaQueryExp* expression)
{
ASSERT_UNUSED(expression, expression == m_floatingMediaQueryExp);
return m_floatingMediaQueryExp.release();
}
Vector<OwnPtr<MediaQueryExp> >* CSSParser::createFloatingMediaQueryExpList()
{
m_floatingMediaQueryExpList = adoptPtr(new Vector<OwnPtr<MediaQueryExp> >);
return m_floatingMediaQueryExpList.get();
}
PassOwnPtr<Vector<OwnPtr<MediaQueryExp> > > CSSParser::sinkFloatingMediaQueryExpList(Vector<OwnPtr<MediaQueryExp> >* list)
{
ASSERT_UNUSED(list, list == m_floatingMediaQueryExpList);
return m_floatingMediaQueryExpList.release();
}
MediaQuery* CSSParser::createFloatingMediaQuery(MediaQuery::Restrictor restrictor, const String& mediaType, PassOwnPtr<Vector<OwnPtr<MediaQueryExp> > > expressions)
{
m_floatingMediaQuery = adoptPtr(new MediaQuery(restrictor, mediaType, expressions));
return m_floatingMediaQuery.get();
}
MediaQuery* CSSParser::createFloatingMediaQuery(PassOwnPtr<Vector<OwnPtr<MediaQueryExp> > > expressions)
{
return createFloatingMediaQuery(MediaQuery::None, "all", expressions);
}
PassOwnPtr<MediaQuery> CSSParser::sinkFloatingMediaQuery(MediaQuery* query)
{
ASSERT_UNUSED(query, query == m_floatingMediaQuery);
return m_floatingMediaQuery.release();
}
MediaList* CSSParser::createMediaList()
{
RefPtr<MediaList> list = MediaList::create();
MediaList* result = list.get();
m_parsedStyleObjects.append(list.release());
return result;
}
CSSRule* CSSParser::createCharsetRule(const CSSParserString& charset)
{
if (!m_styleSheet)
return 0;
RefPtr<CSSCharsetRule> rule = CSSCharsetRule::create(m_styleSheet, charset);
CSSCharsetRule* result = rule.get();
m_parsedStyleObjects.append(rule.release());
return result;
}
CSSRule* CSSParser::createImportRule(const CSSParserString& url, MediaList* media)
{
if (!media || !m_styleSheet || !m_allowImportRules)
return 0;
RefPtr<CSSImportRule> rule = CSSImportRule::create(m_styleSheet, url, media);
CSSImportRule* result = rule.get();
m_parsedStyleObjects.append(rule.release());
return result;
}
CSSRule* CSSParser::createMediaRule(MediaList* media, CSSRuleList* rules)
{
if (!media || !rules || !m_styleSheet)
return 0;
m_allowImportRules = m_allowNamespaceDeclarations = false;
RefPtr<CSSMediaRule> rule = CSSMediaRule::create(m_styleSheet, media, rules);
CSSMediaRule* result = rule.get();
m_parsedStyleObjects.append(rule.release());
return result;
}
CSSRuleList* CSSParser::createRuleList()
{
RefPtr<CSSRuleList> list = CSSRuleList::create();
CSSRuleList* listPtr = list.get();
m_parsedRuleLists.append(list.release());
return listPtr;
}
WebKitCSSKeyframesRule* CSSParser::createKeyframesRule()
{
m_allowImportRules = m_allowNamespaceDeclarations = false;
RefPtr<WebKitCSSKeyframesRule> rule = WebKitCSSKeyframesRule::create(m_styleSheet);
WebKitCSSKeyframesRule* rulePtr = rule.get();
m_parsedStyleObjects.append(rule.release());
return rulePtr;
}
CSSRule* CSSParser::createStyleRule(Vector<OwnPtr<CSSParserSelector> >* selectors)
{
CSSStyleRule* result = 0;
markRuleBodyEnd();
if (selectors) {
m_allowImportRules = m_allowNamespaceDeclarations = false;
RefPtr<CSSStyleRule> rule = CSSStyleRule::create(m_styleSheet, m_lastSelectorLineNumber);
rule->adoptSelectorVector(*selectors);
if (m_hasFontFaceOnlyValues)
deleteFontFaceOnlyValues();
rule->setDeclaration(CSSMutableStyleDeclaration::create(rule.get(), m_parsedProperties, m_numParsedProperties));
result = rule.get();
m_parsedStyleObjects.append(rule.release());
if (m_ruleRangeMap) {
ASSERT(m_currentRuleData);
m_currentRuleData->styleSourceData->styleBodyRange = m_ruleBodyRange;
m_currentRuleData->selectorListRange = m_selectorListRange;
m_ruleRangeMap->set(result, m_currentRuleData.release());
m_currentRuleData = CSSRuleSourceData::create();
m_currentRuleData->styleSourceData = CSSStyleSourceData::create();
m_inStyleRuleOrDeclaration = false;
}
}
resetSelectorListMarks();
resetRuleBodyMarks();
clearProperties();
return result;
}
CSSRule* CSSParser::createFontFaceRule()
{
m_allowImportRules = m_allowNamespaceDeclarations = false;
for (unsigned i = 0; i < m_numParsedProperties; ++i) {
CSSProperty* property = m_parsedProperties[i];
int id = property->id();
if ((id == CSSPropertyFontWeight || id == CSSPropertyFontStyle || id == CSSPropertyFontVariant) && property->value()->isPrimitiveValue()) {
RefPtr<CSSValue> value = property->m_value.release();
property->m_value = CSSValueList::createCommaSeparated();
static_cast<CSSValueList*>(property->m_value.get())->append(value.release());
} else if (id == CSSPropertyFontFamily && static_cast<CSSValueList*>(property->m_value.get())->length() != 1) {
// Unlike font-family property, font-family descriptor in @font-face rule can take only one family name.
// See http://dev.w3.org/csswg/css3-fonts/#font-family-desc
clearProperties();
return 0;
}
}
RefPtr<CSSFontFaceRule> rule = CSSFontFaceRule::create(m_styleSheet);
rule->setDeclaration(CSSMutableStyleDeclaration::create(rule.get(), m_parsedProperties, m_numParsedProperties));
clearProperties();
CSSFontFaceRule* result = rule.get();
m_parsedStyleObjects.append(rule.release());
return result;
}
void CSSParser::addNamespace(const AtomicString& prefix, const AtomicString& uri)
{
if (!m_styleSheet || !m_allowNamespaceDeclarations)
return;
m_allowImportRules = false;
m_styleSheet->addNamespace(this, prefix, uri);
}
void CSSParser::updateSpecifiersWithElementName(const AtomicString& namespacePrefix, const AtomicString& elementName, CSSParserSelector* specifiers)
{
AtomicString determinedNamespace = namespacePrefix != nullAtom && m_styleSheet ? m_styleSheet->determineNamespace(namespacePrefix) : m_defaultNamespace;
QualifiedName tag = QualifiedName(namespacePrefix, elementName, determinedNamespace);
if (!specifiers->isUnknownPseudoElement()) {
specifiers->setTag(tag);
return;
}
specifiers->setRelation(CSSSelector::ShadowDescendant);
if (CSSParserSelector* history = specifiers->tagHistory()) {
history->setTag(tag);
return;
}
// No need to create an extra element name selector if we are matching any element
// in any namespace.
if (elementName == starAtom && m_defaultNamespace == starAtom)
return;
CSSParserSelector* elementNameSelector = new CSSParserSelector;
elementNameSelector->setTag(tag);
specifiers->setTagHistory(elementNameSelector);
}
CSSRule* CSSParser::createPageRule(PassOwnPtr<CSSParserSelector> pageSelector)
{
// FIXME: Margin at-rules are ignored.
m_allowImportRules = m_allowNamespaceDeclarations = false;
CSSPageRule* pageRule = 0;
if (pageSelector) {
RefPtr<CSSPageRule> rule = CSSPageRule::create(m_styleSheet, m_lastSelectorLineNumber);
Vector<OwnPtr<CSSParserSelector> > selectorVector;
selectorVector.append(pageSelector);
rule->adoptSelectorVector(selectorVector);
rule->setDeclaration(CSSMutableStyleDeclaration::create(rule.get(), m_parsedProperties, m_numParsedProperties));
pageRule = rule.get();
m_parsedStyleObjects.append(rule.release());
}
clearProperties();
return pageRule;
}
CSSRule* CSSParser::createMarginAtRule(CSSSelector::MarginBoxType /* marginBox */)
{
// FIXME: Implement margin at-rule here, using:
// - marginBox: margin box
// - m_parsedProperties: properties at [m_numParsedPropertiesBeforeMarginBox, m_numParsedProperties) are for this at-rule.
// Don't forget to also update the action for page symbol in CSSGrammar.y such that margin at-rule data is cleared if page_selector is invalid.
endDeclarationsForMarginBox();
return 0; // until this method is implemented.
}
void CSSParser::startDeclarationsForMarginBox()
{
m_numParsedPropertiesBeforeMarginBox = m_numParsedProperties;
}
void CSSParser::endDeclarationsForMarginBox()
{
ASSERT(m_numParsedPropertiesBeforeMarginBox != INVALID_NUM_PARSED_PROPERTIES);
rollbackLastProperties(m_numParsedProperties - m_numParsedPropertiesBeforeMarginBox);
m_numParsedPropertiesBeforeMarginBox = INVALID_NUM_PARSED_PROPERTIES;
}
void CSSParser::deleteFontFaceOnlyValues()
{
ASSERT(m_hasFontFaceOnlyValues);
int deletedProperties = 0;
for (unsigned i = 0; i < m_numParsedProperties; ++i) {
CSSProperty* property = m_parsedProperties[i];
int id = property->id();
if ((id == CSSPropertyFontWeight || id == CSSPropertyFontStyle || id == CSSPropertyFontVariant) && property->value()->isValueList()) {
delete property;
deletedProperties++;
} else if (deletedProperties)
m_parsedProperties[i - deletedProperties] = m_parsedProperties[i];
}
m_numParsedProperties -= deletedProperties;
}
WebKitCSSKeyframeRule* CSSParser::createKeyframeRule(CSSParserValueList* keys)
{
// Create a key string from the passed keys
String keyString;
for (unsigned i = 0; i < keys->size(); ++i) {
float key = (float) keys->valueAt(i)->fValue;
if (i != 0)
keyString += ",";
keyString += String::number(key);
keyString += "%";
}
RefPtr<WebKitCSSKeyframeRule> keyframe = WebKitCSSKeyframeRule::create(m_styleSheet);
keyframe->setKeyText(keyString);
keyframe->setDeclaration(CSSMutableStyleDeclaration::create(0, m_parsedProperties, m_numParsedProperties));
clearProperties();
WebKitCSSKeyframeRule* keyframePtr = keyframe.get();
m_parsedStyleObjects.append(keyframe.release());
return keyframePtr;
}
void CSSParser::invalidBlockHit()
{
if (m_styleSheet && !m_hadSyntacticallyValidCSSRule)
m_styleSheet->setHasSyntacticallyValidCSSHeader(false);
}
void CSSParser::updateLastSelectorLineAndPosition()
{
m_lastSelectorLineNumber = m_lineNumber;
markRuleBodyStart();
}
void CSSParser::markSelectorListStart()
{
m_selectorListRange.start = yytext - m_data;
}
void CSSParser::markSelectorListEnd()
{
if (!m_currentRuleData)
return;
UChar* listEnd = yytext;
while (listEnd > m_data + 1) {
if (isHTMLSpace(*(listEnd - 1)))
--listEnd;
else
break;
}
m_selectorListRange.end = listEnd - m_data;
}
void CSSParser::markRuleBodyStart()
{
unsigned offset = yytext - m_data;
if (*yytext == '{')
++offset; // Skip the rule body opening brace.
if (offset > m_ruleBodyRange.start)
m_ruleBodyRange.start = offset;
m_inStyleRuleOrDeclaration = true;
}
void CSSParser::markRuleBodyEnd()
{
unsigned offset = yytext - m_data;
if (offset > m_ruleBodyRange.end)
m_ruleBodyRange.end = offset;
}
void CSSParser::markPropertyStart()
{
if (!m_inStyleRuleOrDeclaration)
return;
m_propertyRange.start = yytext - m_data;
}
void CSSParser::markPropertyEnd(bool isImportantFound, bool isPropertyParsed)
{
if (!m_inStyleRuleOrDeclaration)
return;
unsigned offset = yytext - m_data;
if (*yytext == ';') // Include semicolon into the property text.
++offset;
m_propertyRange.end = offset;
if (m_propertyRange.start != UINT_MAX && m_currentRuleData) {
// This stuff is only executed when the style data retrieval is requested by client.
const unsigned start = m_propertyRange.start;
const unsigned end = m_propertyRange.end;
ASSERT(start < end);
String propertyString = String(m_data + start, end - start).stripWhiteSpace();
if (propertyString.endsWith(";", true))
propertyString = propertyString.left(propertyString.length() - 1);
Vector<String> propertyComponents;
size_t colonIndex = propertyString.find(":");
ASSERT(colonIndex != notFound);
String name = propertyString.left(colonIndex).stripWhiteSpace();
String value = propertyString.substring(colonIndex + 1, propertyString.length()).stripWhiteSpace();
// The property range is relative to the declaration start offset.
m_currentRuleData->styleSourceData->propertyData.append(
CSSPropertySourceData(name, value, isImportantFound, isPropertyParsed, SourceRange(start - m_ruleBodyRange.start, end - m_ruleBodyRange.start)));
}
resetPropertyMarks();
}
static int cssPropertyID(const UChar* propertyName, unsigned length)
{
if (!length)
return 0;
if (length > maxCSSPropertyNameLength)
return 0;
char buffer[maxCSSPropertyNameLength + 1 + 1]; // 1 to turn "apple"/"khtml" into "webkit", 1 for null character
for (unsigned i = 0; i != length; ++i) {
UChar c = propertyName[i];
if (c == 0 || c >= 0x7F)
return 0; // illegal character
buffer[i] = toASCIILower(c);
}
buffer[length] = '\0';
const char* name = buffer;
if (buffer[0] == '-') {
// If the prefix is -apple- or -khtml-, change it to -webkit-.
// This makes the string one character longer.
if (hasPrefix(buffer, length, "-apple-") || hasPrefix(buffer, length, "-khtml-")) {
memmove(buffer + 7, buffer + 6, length + 1 - 6);
memcpy(buffer, "-webkit", 7);
++length;
}
if (hasPrefix(buffer, length, "-webkit")) {
if (!strcmp(buffer, "-webkit-box-sizing")) {
// -webkit-box-sizing worked in Safari 4 and earlier.
const char* const boxSizing = "box-sizing";
name = boxSizing;
length = strlen(boxSizing);
} else if (!strcmp(buffer, "-webkit-opacity")) {
// Honor -webkit-opacity as a synonym for opacity.
// This was the only syntax that worked in Safari 1.1, and may be in use on some websites and widgets.
const char* const opacity = "opacity";
name = opacity;
length = strlen(opacity);
#if PLATFORM(IOS)
} else if (!strcmp(buffer, "-webkit-hyphenate-locale")) {
// Worked in iOS 4.2.
const char* const webkitLocale = "-webkit-locale";
name = webkitLocale;
length = strlen(webkitLocale);
#endif
} else if (hasPrefix(buffer + 7, length - 7, "-border-")) {
// -webkit-border-*-*-radius worked in Safari 4 and earlier. -webkit-border-radius syntax
// differs from border-radius, so it is remains as a distinct property.
if (!strcmp(buffer + 15, "top-left-radius")
|| !strcmp(buffer + 15, "top-right-radius")
|| !strcmp(buffer + 15, "bottom-right-radius")
|| !strcmp(buffer + 15, "bottom-left-radius")) {
name = buffer + 8;
length -= 8;
}
}
}
}
const Property* hashTableEntry = findProperty(name, length);
return hashTableEntry ? hashTableEntry->id : 0;
}
int cssPropertyID(const String& string)
{
return cssPropertyID(string.characters(), string.length());
}
int cssPropertyID(const CSSParserString& string)
{
return cssPropertyID(string.characters, string.length);
}
int cssValueKeywordID(const CSSParserString& string)
{
unsigned length = string.length;
if (!length)
return 0;
if (length > maxCSSValueKeywordLength)
return 0;
char buffer[maxCSSValueKeywordLength + 1 + 1]; // 1 to turn "apple"/"khtml" into "webkit", 1 for null character
for (unsigned i = 0; i != length; ++i) {
UChar c = string.characters[i];
if (c == 0 || c >= 0x7F)
return 0; // illegal character
buffer[i] = WTF::toASCIILower(c);
}
buffer[length] = '\0';
if (buffer[0] == '-') {
// If the prefix is -apple- or -khtml-, change it to -webkit-.
// This makes the string one character longer.
if (hasPrefix(buffer, length, "-apple-") || hasPrefix(buffer, length, "-khtml-")) {
memmove(buffer + 7, buffer + 6, length + 1 - 6);
memcpy(buffer, "-webkit", 7);
++length;
}
}
const Value* hashTableEntry = findValue(buffer, length);
return hashTableEntry ? hashTableEntry->id : 0;
}
// "ident" from the CSS tokenizer, minus backslash-escape sequences
static bool isCSSTokenizerIdentifier(const String& string)
{
const UChar* p = string.characters();
const UChar* end = p + string.length();
// -?
if (p != end && p[0] == '-')
++p;
// {nmstart}
if (p == end || !(p[0] == '_' || p[0] >= 128 || isASCIIAlpha(p[0])))
return false;
++p;
// {nmchar}*
for (; p != end; ++p) {
if (!(p[0] == '_' || p[0] == '-' || p[0] >= 128 || isASCIIAlphanumeric(p[0])))
return false;
}
return true;
}
// "url" from the CSS tokenizer, minus backslash-escape sequences
static bool isCSSTokenizerURL(const String& string)
{
const UChar* p = string.characters();
const UChar* end = p + string.length();
for (; p != end; ++p) {
UChar c = p[0];
switch (c) {
case '!':
case '#':
case '$':
case '%':
case '&':
break;
default:
if (c < '*')
return false;
if (c <= '~')
break;
if (c < 128)
return false;
}
}
return true;
}
// We use single quotes for now because markup.cpp uses double quotes.
String quoteCSSString(const String& string)
{
// For efficiency, we first pre-calculate the length of the quoted string, then we build the actual one.
// Please see below for the actual logic.
unsigned quotedStringSize = 2; // Two quotes surrounding the entire string.
bool afterEscape = false;
for (unsigned i = 0; i < string.length(); ++i) {
UChar ch = string[i];
if (ch == '\\' || ch == '\'') {
quotedStringSize += 2;
afterEscape = false;
} else if (ch < 0x20 || ch == 0x7F) {
quotedStringSize += 2 + (ch >= 0x10);
afterEscape = true;
} else {
quotedStringSize += 1 + (afterEscape && (isASCIIHexDigit(ch) || ch == ' '));
afterEscape = false;
}
}
StringBuffer buffer(quotedStringSize);
unsigned index = 0;
buffer[index++] = '\'';
afterEscape = false;
for (unsigned i = 0; i < string.length(); ++i) {
UChar ch = string[i];
if (ch == '\\' || ch == '\'') {
buffer[index++] = '\\';
buffer[index++] = ch;
afterEscape = false;
} else if (ch < 0x20 || ch == 0x7F) { // Control characters.
buffer[index++] = '\\';
placeByteAsHexCompressIfPossible(ch, buffer, index, Lowercase);
afterEscape = true;
} else {
// Space character may be required to separate backslash-escape sequence and normal characters.
if (afterEscape && (isASCIIHexDigit(ch) || ch == ' '))
buffer[index++] = ' ';
buffer[index++] = ch;
afterEscape = false;
}
}
buffer[index++] = '\'';
ASSERT(quotedStringSize == index);
return String::adopt(buffer);
}
String quoteCSSStringIfNeeded(const String& string)
{
return isCSSTokenizerIdentifier(string) ? string : quoteCSSString(string);
}
String quoteCSSURLIfNeeded(const String& string)
{
return isCSSTokenizerURL(string) ? string : quoteCSSString(string);
}
bool isValidNthToken(const CSSParserString& token)
{
// The tokenizer checks for the construct of an+b.
// nth can also accept "odd" or "even" but should not accept any other token.
return equalIgnoringCase(token, "odd") || equalIgnoringCase(token, "even");
}
#define YY_DECL int CSSParser::lex()
#define yyconst const
typedef int yy_state_type;
typedef unsigned YY_CHAR;
// The following line makes sure we treat non-Latin-1 Unicode characters correctly.
#define YY_SC_TO_UI(c) (c > 0xff ? 0xff : c)
#define YY_DO_BEFORE_ACTION \
yytext = yy_bp; \
yyleng = (int) (yy_cp - yy_bp); \
yy_hold_char = *yy_cp; \
*yy_cp = 0; \
yy_c_buf_p = yy_cp;
#define YY_BREAK break;
#define ECHO
#define YY_RULE_SETUP
#define INITIAL 0
#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)
#define yyterminate() yyTok = END_TOKEN; return yyTok
#define YY_FATAL_ERROR(a)
// The following line is needed to build the tokenizer with a condition stack.
// The macro is used in the tokenizer grammar with lines containing
// BEGIN(mediaqueries) and BEGIN(initial). yy_start acts as index to
// tokenizer transition table, and 'mediaqueries' and 'initial' are
// offset multipliers that specify which transitions are active
// in the tokenizer during in each condition (tokenizer state).
#define BEGIN yy_start = 1 + 2 *
#include "tokenizer.cpp"
}