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flutter_flutter/engine/core/css/parser/BisonCSSParser-in.cpp
Eric Seidel 64e97bbea8 remove CSS 'all' property. 
The human mind is simply not capable of beholding the
sheer power of the CSS 'all' property.  We shall remove it
now and leave its echo for generations to contemplate.

R=ojan@chromium.org

Review URL: https://codereview.chromium.org/1068393002
2015-04-08 13:39:47 -07:00

1603 lines
62 KiB
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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, 2011, 2012 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/)
* Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
* Copyright (C) 2012 Intel Corporation. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "sky/engine/config.h"
#include "sky/engine/core/css/parser/BisonCSSParser.h"
#include <limits.h>
#include "gen/sky/core/CSSValueKeywords.h"
#include "gen/sky/core/StylePropertyShorthand.h"
#include "gen/sky/platform/RuntimeEnabledFeatures.h"
#include "sky/engine/core/css/CSSAspectRatioValue.h"
#include "sky/engine/core/css/CSSBasicShapes.h"
#include "sky/engine/core/css/CSSBorderImage.h"
#include "sky/engine/core/css/CSSCrossfadeValue.h"
#include "sky/engine/core/css/CSSCursorImageValue.h"
#include "sky/engine/core/css/CSSFontFaceSrcValue.h"
#include "sky/engine/core/css/CSSFontFeatureValue.h"
#include "sky/engine/core/css/CSSFunctionValue.h"
#include "sky/engine/core/css/CSSGradientValue.h"
#include "sky/engine/core/css/CSSImageSetValue.h"
#include "sky/engine/core/css/CSSImageValue.h"
#include "sky/engine/core/css/CSSInheritedValue.h"
#include "sky/engine/core/css/CSSInitialValue.h"
#include "sky/engine/core/css/CSSLineBoxContainValue.h"
#include "sky/engine/core/css/CSSPrimitiveValue.h"
#include "sky/engine/core/css/CSSPropertySourceData.h"
#include "sky/engine/core/css/CSSSelector.h"
#include "sky/engine/core/css/CSSShadowValue.h"
#include "sky/engine/core/css/CSSStyleSheet.h"
#include "sky/engine/core/css/CSSTimingFunctionValue.h"
#include "sky/engine/core/css/CSSTransformValue.h"
#include "sky/engine/core/css/CSSUnicodeRangeValue.h"
#include "sky/engine/core/css/CSSValueList.h"
#include "sky/engine/core/css/CSSValuePool.h"
#include "sky/engine/core/css/HashTools.h"
#include "sky/engine/core/css/Pair.h"
#include "sky/engine/core/css/Rect.h"
#include "sky/engine/core/css/StylePropertySet.h"
#include "sky/engine/core/css/StyleRule.h"
#include "sky/engine/core/css/StyleSheetContents.h"
#include "sky/engine/core/css/parser/CSSParserIdioms.h"
#include "sky/engine/core/dom/Document.h"
#include "sky/engine/core/frame/FrameConsole.h"
#include "sky/engine/core/frame/FrameHost.h"
#include "sky/engine/core/frame/LocalFrame.h"
#include "sky/engine/core/frame/Settings.h"
#include "sky/engine/core/html/parser/HTMLParserIdioms.h"
#include "sky/engine/core/inspector/ConsoleMessage.h"
#include "sky/engine/core/rendering/RenderTheme.h"
#include "sky/engine/platform/FloatConversion.h"
#include "sky/engine/wtf/BitArray.h"
#include "sky/engine/wtf/HexNumber.h"
#include "sky/engine/wtf/text/StringBuffer.h"
#include "sky/engine/wtf/text/StringBuilder.h"
#include "sky/engine/wtf/text/StringImpl.h"
#include "sky/engine/wtf/text/TextEncoding.h"
#define YYDEBUG 0
#if YYDEBUG > 0
extern int cssyydebug;
#endif
int cssyyparse(blink::BisonCSSParser*);
using namespace WTF;
namespace blink {
static const unsigned INVALID_NUM_PARSED_PROPERTIES = UINT_MAX;
BisonCSSParser::BisonCSSParser(const CSSParserContext& context)
: m_context(context)
, m_id(CSSPropertyInvalid)
, m_styleSheet(nullptr)
, m_supportsCondition(false)
, m_selectorListForParseSelector(0)
, m_numParsedPropertiesBeforeMarginBox(INVALID_NUM_PARSED_PROPERTIES)
, m_hadSyntacticallyValidCSSRule(false)
, m_ignoreErrors(false)
, m_defaultNamespace(starAtom)
, m_observer(0)
, m_source(0)
, m_ruleHeaderType(CSSRuleSourceData::UNKNOWN_RULE)
, m_allowImportRules(true)
, m_allowNamespaceDeclarations(true)
, m_inViewport(false)
, m_tokenizer(*this)
{
#if YYDEBUG > 0
cssyydebug = 1;
#endif
}
BisonCSSParser::~BisonCSSParser()
{
clearProperties();
deleteAllValues(m_floatingSelectors);
deleteAllValues(m_floatingSelectorVectors);
deleteAllValues(m_floatingValueLists);
deleteAllValues(m_floatingFunctions);
}
void BisonCSSParser::setupParser(const char* prefix, unsigned prefixLength, const String& string, const char* suffix, unsigned suffixLength)
{
m_tokenizer.setupTokenizer(prefix, prefixLength, string, suffix, suffixLength);
m_ruleHasHeader = true;
}
void BisonCSSParser::parseSheet(StyleSheetContents* sheet, const String& string)
{
setStyleSheet(sheet);
m_defaultNamespace = starAtom; // Reset the default namespace.
m_ignoreErrors = false;
m_tokenizer.m_lineNumber = 0;
m_source = &string;
m_tokenizer.m_internal = false;
setupParser("", string, "");
cssyyparse(this);
sheet->shrinkToFit();
m_source = 0;
m_rule = nullptr;
m_lineEndings.clear();
m_ignoreErrors = false;
m_tokenizer.m_internal = true;
}
PassRefPtr<StyleRuleBase> BisonCSSParser::parseRule(StyleSheetContents* sheet, const String& string)
{
setStyleSheet(sheet);
m_allowNamespaceDeclarations = false;
setupParser("@-internal-rule ", string, "");
cssyyparse(this);
return m_rule.release();
}
bool BisonCSSParser::parseSupportsCondition(const String& string)
{
m_supportsCondition = false;
setupParser("@-internal-supports-condition ", string, "");
cssyyparse(this);
return m_supportsCondition;
}
static inline bool isColorPropertyID(CSSPropertyID propertyId)
{
switch (propertyId) {
case CSSPropertyColor:
case CSSPropertyBackgroundColor:
case CSSPropertyBorderBottomColor:
case CSSPropertyBorderLeftColor:
case CSSPropertyBorderRightColor:
case CSSPropertyBorderTopColor:
case CSSPropertyOutlineColor:
case CSSPropertyWebkitBorderAfterColor:
case CSSPropertyWebkitBorderBeforeColor:
case CSSPropertyWebkitBorderEndColor:
case CSSPropertyWebkitBorderStartColor:
case CSSPropertyWebkitTextEmphasisColor:
case CSSPropertyWebkitTextFillColor:
case CSSPropertyWebkitTextStrokeColor:
case CSSPropertyTextDecorationColor:
return true;
default:
return false;
}
}
static bool parseColorValue(MutableStylePropertySet* declaration, CSSPropertyID propertyId, const String& string, CSSParserMode cssParserMode)
{
ASSERT(!string.isEmpty());
bool quirksMode = isQuirksModeBehavior(cssParserMode);
if (!isColorPropertyID(propertyId))
return false;
CSSParserString cssString;
cssString.init(string);
CSSValueID valueID = cssValueKeywordID(cssString);
bool validPrimitive = false;
if (valueID == CSSValueCurrentcolor)
validPrimitive = true;
if (validPrimitive) {
RefPtr<CSSValue> value = cssValuePool().createIdentifierValue(valueID);
declaration->addParsedProperty(CSSProperty(propertyId, value.release()));
return true;
}
RGBA32 color;
if (!CSSPropertyParser::fastParseColor(color, string, !quirksMode && string[0] != '#'))
return false;
RefPtr<CSSValue> value = cssValuePool().createColorValue(color);
declaration->addParsedProperty(CSSProperty(propertyId, value.release()));
return true;
}
static inline bool isSimpleLengthPropertyID(CSSPropertyID 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 CSSPropertyTop:
case CSSPropertyWebkitMarginAfter:
case CSSPropertyWebkitMarginBefore:
case CSSPropertyWebkitMarginEnd:
case CSSPropertyWebkitMarginStart:
acceptsNegativeNumbers = true;
return true;
default:
return false;
}
}
template <typename CharacterType>
static inline bool parseSimpleLength(const CharacterType* characters, unsigned length, CSSPrimitiveValue::UnitType& unit, double& number)
{
if (length > 2 && (characters[length - 2] | 0x20) == 'p' && (characters[length - 1] | 0x20) == '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;
number = charactersToDouble(characters, length, &ok);
return ok;
}
static bool parseSimpleLengthValue(MutableStylePropertySet* declaration, CSSPropertyID propertyId, const String& string, CSSParserMode cssParserMode)
{
ASSERT(!string.isEmpty());
bool acceptsNegativeNumbers = false;
// In @viewport, width and height are shorthands, not simple length values.
if (isCSSViewportParsingEnabledForMode(cssParserMode) || !isSimpleLengthPropertyID(propertyId, acceptsNegativeNumbers))
return false;
unsigned length = string.length();
double number;
CSSPrimitiveValue::UnitType unit = CSSPrimitiveValue::CSS_NUMBER;
if (string.is8Bit()) {
if (!parseSimpleLength(string.characters8(), length, unit, number))
return false;
} else {
if (!parseSimpleLength(string.characters16(), length, unit, number))
return false;
}
if (unit == CSSPrimitiveValue::CSS_NUMBER) {
bool quirksMode = isQuirksModeBehavior(cssParserMode);
if (number && !quirksMode)
return false;
unit = CSSPrimitiveValue::CSS_PX;
}
if (number < 0 && !acceptsNegativeNumbers)
return false;
RefPtr<CSSValue> value = cssValuePool().createValue(number, unit);
declaration->addParsedProperty(CSSProperty(propertyId, value.release()));
return true;
}
bool isValidKeywordPropertyAndValue(CSSPropertyID propertyId, CSSValueID valueID, const CSSParserContext& parserContext)
{
if (valueID == CSSValueInvalid)
return false;
switch (propertyId) {
case CSSPropertyBackgroundRepeatX: // repeat | no-repeat
case CSSPropertyBackgroundRepeatY: // repeat | no-repeat
return valueID == CSSValueRepeat || valueID == CSSValueNoRepeat;
case CSSPropertyBorderTopStyle: // <border-style>
case CSSPropertyBorderRightStyle: // Defined as: none | hidden | dotted | dashed |
case CSSPropertyBorderBottomStyle: // solid | double | groove | ridge | inset | outset
case CSSPropertyBorderLeftStyle:
case CSSPropertyWebkitBorderAfterStyle:
case CSSPropertyWebkitBorderBeforeStyle:
case CSSPropertyWebkitBorderEndStyle:
case CSSPropertyWebkitBorderStartStyle:
return valueID >= CSSValueNone && valueID <= CSSValueDouble;
case CSSPropertyBoxSizing:
return valueID == CSSValueBorderBox || valueID == CSSValueContentBox;
case CSSPropertyCaptionSide: // top | bottom | left | right
return valueID == CSSValueLeft || valueID == CSSValueRight || valueID == CSSValueTop || valueID == CSSValueBottom;
case CSSPropertyDirection: // ltr | rtl
return valueID == CSSValueLtr || valueID == CSSValueRtl;
case CSSPropertyDisplay:
// inline | block | list-item | 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 | -webkit-box | -webkit-inline-box | none
// flex | inline-flex
return (valueID >= CSSValueInline && valueID <= CSSValueInlineFlex) || valueID == CSSValueNone;
case CSSPropertyEmptyCells: // show | hide
return valueID == CSSValueShow || valueID == CSSValueHide;
case CSSPropertyFontStyle: // normal | italic | oblique
return valueID == CSSValueNormal || valueID == CSSValueItalic || valueID == CSSValueOblique;
case CSSPropertyFontStretch: // normal | ultra-condensed | extra-condensed | condensed | semi-condensed | semi-expanded | expanded | extra-expanded | ultra-expanded
return valueID == CSSValueNormal || (valueID >= CSSValueUltraCondensed && valueID <= CSSValueUltraExpanded);
case CSSPropertyImageRendering: // auto | optimizeContrast | pixelated
return valueID == CSSValueAuto || valueID == CSSValueWebkitOptimizeContrast || (RuntimeEnabledFeatures::imageRenderingPixelatedEnabled() && valueID == CSSValuePixelated);
case CSSPropertyListStylePosition: // inside | outside
return valueID == CSSValueInside || valueID == CSSValueOutside;
case CSSPropertyListStyleType:
// See section CSS_PROP_LIST_STYLE_TYPE of file CSSValueKeywords.in
// for the list of supported list-style-types.
return (valueID >= CSSValueDisc && valueID <= CSSValueKatakanaIroha) || valueID == CSSValueNone;
case CSSPropertyObjectFit:
ASSERT(RuntimeEnabledFeatures::objectFitPositionEnabled());
return valueID == CSSValueFill || valueID == CSSValueContain || valueID == CSSValueCover || valueID == CSSValueNone || valueID == CSSValueScaleDown;
case CSSPropertyOutlineStyle: // (<border-style> except hidden) | auto
return valueID == CSSValueAuto || valueID == CSSValueNone || (valueID >= CSSValueInset && valueID <= CSSValueDouble);
case CSSPropertyOverflowWrap: // normal | break-word
case CSSPropertyWordWrap:
return valueID == CSSValueNormal || valueID == CSSValueBreakWord;
case CSSPropertyOverflowX: // visible | hidden | auto | overlay
return valueID == CSSValueVisible || valueID == CSSValueHidden || valueID == CSSValueAuto || valueID == CSSValueOverlay;
case CSSPropertyOverflowY: // visible | hidden | auto | overlay | -webkit-paged-x | -webkit-paged-y
return valueID == CSSValueVisible || valueID == CSSValueHidden || valueID == CSSValueAuto || valueID == CSSValueOverlay || valueID == CSSValueWebkitPagedX || valueID == CSSValueWebkitPagedY;
case CSSPropertyPageBreakAfter: // auto | always | avoid | left | right
case CSSPropertyPageBreakBefore:
case CSSPropertyPageBreakInside: // avoid | auto
case CSSPropertyPointerEvents:
// none | visiblePainted | visibleFill | visibleStroke | visible |
// painted | fill | stroke | auto | all | bounding-box
return valueID == CSSValueVisible || valueID == CSSValueNone || valueID == CSSValueAll || valueID == CSSValueAuto || (valueID >= CSSValueVisiblepainted && valueID <= CSSValueBoundingBox);
case CSSPropertyPosition: // static | absolute
return valueID == CSSValueStatic || valueID == CSSValueAbsolute;
case CSSPropertySpeak: // none | normal | spell-out | digits | literal-punctuation | no-punctuation
return valueID == CSSValueNone || valueID == CSSValueNormal || valueID == CSSValueSpellOut || valueID == CSSValueDigits || valueID == CSSValueLiteralPunctuation || valueID == CSSValueNoPunctuation;
case CSSPropertyTableLayout: // auto | fixed
return valueID == CSSValueAuto || valueID == CSSValueFixed;
case CSSPropertyTextAlignLast:
// auto | start | end | left | right | center | justify
ASSERT(RuntimeEnabledFeatures::css3TextEnabled());
return (valueID >= CSSValueLeft && valueID <= CSSValueJustify) || valueID == CSSValueStart || valueID == CSSValueEnd || valueID == CSSValueAuto;
case CSSPropertyTextDecorationStyle:
// solid | double | dotted | dashed | wavy
ASSERT(RuntimeEnabledFeatures::css3TextDecorationsEnabled());
return valueID == CSSValueSolid || valueID == CSSValueDouble || valueID == CSSValueDotted || valueID == CSSValueDashed || valueID == CSSValueWavy;
case CSSPropertyTextJustify:
// auto | none | inter-word | distribute
ASSERT(RuntimeEnabledFeatures::css3TextEnabled());
return valueID == CSSValueInterWord || valueID == CSSValueDistribute || valueID == CSSValueAuto || valueID == CSSValueNone;
case CSSPropertyTextOverflow: // clip | ellipsis
return valueID == CSSValueClip || valueID == CSSValueEllipsis;
case CSSPropertyTextRendering: // auto | optimizeSpeed | optimizeLegibility | geometricPrecision
return valueID == CSSValueAuto || valueID == CSSValueOptimizespeed || valueID == CSSValueOptimizelegibility || valueID == CSSValueGeometricprecision;
case CSSPropertyUnicodeBidi:
return valueID == CSSValueNormal || valueID == CSSValueEmbed
|| valueID == CSSValueBidiOverride || valueID == CSSValueWebkitIsolate
|| valueID == CSSValueWebkitIsolateOverride || valueID == CSSValueWebkitPlaintext;
case CSSPropertyTouchActionDelay: // none | script
ASSERT(RuntimeEnabledFeatures::cssTouchActionDelayEnabled());
return valueID == CSSValueScript || valueID == CSSValueNone;
case CSSPropertyBackfaceVisibility:
case CSSPropertyWebkitBackfaceVisibility:
return valueID == CSSValueVisible || valueID == CSSValueHidden;
case CSSPropertyWebkitBoxDecorationBreak:
return valueID == CSSValueClone || valueID == CSSValueSlice;
case CSSPropertyAlignContent:
// FIXME: Per CSS alignment, this property should accept an optional <overflow-position>. We should share this parsing code with 'justify-self'.
return valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueID == CSSValueCenter || valueID == CSSValueSpaceBetween || valueID == CSSValueSpaceAround || valueID == CSSValueStretch;
case CSSPropertyAlignItems:
// FIXME: Per CSS alignment, this property should accept the same arguments as 'justify-self' so we should share its parsing code.
return valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueID == CSSValueCenter || valueID == CSSValueBaseline || valueID == CSSValueStretch;
case CSSPropertyAlignSelf:
// FIXME: Per CSS alignment, this property should accept the same arguments as 'justify-self' so we should share its parsing code.
return valueID == CSSValueAuto || valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueID == CSSValueCenter || valueID == CSSValueBaseline || valueID == CSSValueStretch;
case CSSPropertyFlexDirection:
return valueID == CSSValueRow || valueID == CSSValueRowReverse || valueID == CSSValueColumn || valueID == CSSValueColumnReverse;
case CSSPropertyFlexWrap:
return valueID == CSSValueNowrap || valueID == CSSValueWrap || valueID == CSSValueWrapReverse;
case CSSPropertyJustifyContent:
// FIXME: Per CSS alignment, this property should accept an optional <overflow-position>. We should share this parsing code with 'justify-self'.
return valueID == CSSValueFlexStart || valueID == CSSValueFlexEnd || valueID == CSSValueCenter || valueID == CSSValueSpaceBetween || valueID == CSSValueSpaceAround;
case CSSPropertyFontKerning:
return valueID == CSSValueAuto || valueID == CSSValueNormal || valueID == CSSValueNone;
case CSSPropertyWebkitFontSmoothing:
return valueID == CSSValueAuto || valueID == CSSValueNone || valueID == CSSValueAntialiased || valueID == CSSValueSubpixelAntialiased;
case CSSPropertyWebkitLineBreak: // auto | loose | normal | strict | after-white-space
return valueID == CSSValueAuto || valueID == CSSValueLoose || valueID == CSSValueNormal || valueID == CSSValueStrict || valueID == CSSValueAfterWhiteSpace;
case CSSPropertyWebkitRtlOrdering:
return valueID == CSSValueLogical || valueID == CSSValueVisual;
case CSSPropertyWebkitTextEmphasisPosition:
return valueID == CSSValueOver || valueID == CSSValueUnder;
case CSSPropertyTransformStyle:
case CSSPropertyWebkitTransformStyle:
return valueID == CSSValueFlat || valueID == CSSValuePreserve3d;
case CSSPropertyWebkitUserDrag: // auto | none | element
return valueID == CSSValueAuto || valueID == CSSValueNone || valueID == CSSValueElement;
case CSSPropertyWebkitUserModify: // read-only | read-write
return valueID == CSSValueReadOnly || valueID == CSSValueReadWrite || valueID == CSSValueReadWritePlaintextOnly;
case CSSPropertyWebkitUserSelect: // auto | none | text | all
return valueID == CSSValueAuto || valueID == CSSValueNone || valueID == CSSValueText || valueID == CSSValueAll;
case CSSPropertyWhiteSpace: // normal | pre | nowrap
return valueID == CSSValueNormal || valueID == CSSValuePre || valueID == CSSValuePreWrap || valueID == CSSValuePreLine || valueID == CSSValueNowrap;
case CSSPropertyWordBreak: // normal | break-all | break-word (this is a custom extension)
return valueID == CSSValueNormal || valueID == CSSValueBreakAll || valueID == CSSValueBreakWord;
default:
ASSERT_NOT_REACHED();
return false;
}
return false;
}
bool isKeywordPropertyID(CSSPropertyID propertyId)
{
switch (propertyId) {
case CSSPropertyAlignItems:
case CSSPropertyAlignSelf:
case CSSPropertyBackgroundRepeatX:
case CSSPropertyBackgroundRepeatY:
case CSSPropertyBorderBottomStyle:
case CSSPropertyBorderLeftStyle:
case CSSPropertyBorderRightStyle:
case CSSPropertyBorderTopStyle:
case CSSPropertyBoxSizing:
case CSSPropertyCaptionSide:
case CSSPropertyDirection:
case CSSPropertyDisplay:
case CSSPropertyEmptyCells:
case CSSPropertyFontStyle:
case CSSPropertyFontStretch:
case CSSPropertyImageRendering:
case CSSPropertyListStylePosition:
case CSSPropertyListStyleType:
case CSSPropertyObjectFit:
case CSSPropertyOutlineStyle:
case CSSPropertyOverflowWrap:
case CSSPropertyOverflowX:
case CSSPropertyOverflowY:
case CSSPropertyPageBreakAfter:
case CSSPropertyPageBreakBefore:
case CSSPropertyPageBreakInside:
case CSSPropertyPointerEvents:
case CSSPropertyPosition:
case CSSPropertySpeak:
case CSSPropertyTableLayout:
case CSSPropertyTextAlignLast:
case CSSPropertyTextDecorationStyle:
case CSSPropertyTextJustify:
case CSSPropertyTextOverflow:
case CSSPropertyTextRendering:
case CSSPropertyTouchActionDelay:
case CSSPropertyUnicodeBidi:
case CSSPropertyBackfaceVisibility:
case CSSPropertyWebkitBackfaceVisibility:
case CSSPropertyWebkitBorderAfterStyle:
case CSSPropertyWebkitBorderBeforeStyle:
case CSSPropertyWebkitBorderEndStyle:
case CSSPropertyWebkitBorderStartStyle:
case CSSPropertyWebkitBoxDecorationBreak:
case CSSPropertyAlignContent:
case CSSPropertyFlexDirection:
case CSSPropertyFlexWrap:
case CSSPropertyJustifyContent:
case CSSPropertyFontKerning:
case CSSPropertyWebkitFontSmoothing:
case CSSPropertyWebkitLineBreak:
case CSSPropertyWebkitRtlOrdering:
case CSSPropertyWebkitTextEmphasisPosition:
case CSSPropertyTransformStyle:
case CSSPropertyWebkitTransformStyle:
case CSSPropertyWebkitUserDrag:
case CSSPropertyWebkitUserModify:
case CSSPropertyWebkitUserSelect:
case CSSPropertyWhiteSpace:
case CSSPropertyWordBreak:
case CSSPropertyWordWrap:
return true;
default:
return false;
}
}
static bool parseKeywordValue(MutableStylePropertySet* declaration, CSSPropertyID propertyId, const String& string, const CSSParserContext& parserContext)
{
ASSERT(!string.isEmpty());
if (!isKeywordPropertyID(propertyId)) {
// All properties accept the values of "initial" and "inherit".
String lowerCaseString = string.lower();
if (lowerCaseString != "initial" && lowerCaseString != "inherit")
return false;
// Parse initial/inherit shorthands using the BisonCSSParser.
if (shorthandForProperty(propertyId).length())
return false;
}
CSSParserString cssString;
cssString.init(string);
CSSValueID valueID = cssValueKeywordID(cssString);
if (!valueID)
return false;
RefPtr<CSSValue> value = nullptr;
if (valueID == CSSValueInherit)
value = cssValuePool().createInheritedValue();
else if (valueID == CSSValueInitial)
value = cssValuePool().createExplicitInitialValue();
else if (isValidKeywordPropertyAndValue(propertyId, valueID, parserContext))
value = cssValuePool().createIdentifierValue(valueID);
else
return false;
declaration->addParsedProperty(CSSProperty(propertyId, value.release()));
return true;
}
template <typename CharType>
static bool parseTransformTranslateArguments(CharType*& pos, CharType* end, unsigned expectedCount, CSSTransformValue* transformValue)
{
while (expectedCount) {
size_t delimiter = WTF::find(pos, end - pos, expectedCount == 1 ? ')' : ',');
if (delimiter == kNotFound)
return false;
unsigned argumentLength = static_cast<unsigned>(delimiter);
CSSPrimitiveValue::UnitType unit = CSSPrimitiveValue::CSS_NUMBER;
double number;
if (!parseSimpleLength(pos, argumentLength, unit, number))
return false;
if (unit != CSSPrimitiveValue::CSS_PX && (number || unit != CSSPrimitiveValue::CSS_NUMBER))
return false;
transformValue->append(cssValuePool().createValue(number, CSSPrimitiveValue::CSS_PX));
pos += argumentLength + 1;
--expectedCount;
}
return true;
}
template <typename CharType>
static bool parseTransformNumberArguments(CharType*& pos, CharType* end, unsigned expectedCount, CSSTransformValue* transformValue)
{
while (expectedCount) {
size_t delimiter = WTF::find(pos, end - pos, expectedCount == 1 ? ')' : ',');
if (delimiter == kNotFound)
return false;
unsigned argumentLength = static_cast<unsigned>(delimiter);
bool ok;
double number = charactersToDouble(pos, argumentLength, &ok);
if (!ok)
return false;
transformValue->append(cssValuePool().createValue(number, CSSPrimitiveValue::CSS_NUMBER));
pos += argumentLength + 1;
--expectedCount;
}
return true;
}
template <typename CharType>
static PassRefPtr<CSSTransformValue> parseSimpleTransformValue(CharType*& pos, CharType* end)
{
static const int shortestValidTransformStringLength = 12;
if (end - pos < shortestValidTransformStringLength)
return nullptr;
const bool isTranslate = toASCIILower(pos[0]) == 't'
&& toASCIILower(pos[1]) == 'r'
&& toASCIILower(pos[2]) == 'a'
&& toASCIILower(pos[3]) == 'n'
&& toASCIILower(pos[4]) == 's'
&& toASCIILower(pos[5]) == 'l'
&& toASCIILower(pos[6]) == 'a'
&& toASCIILower(pos[7]) == 't'
&& toASCIILower(pos[8]) == 'e';
if (isTranslate) {
CSSTransformValue::TransformOperationType transformType;
unsigned expectedArgumentCount = 1;
unsigned argumentStart = 11;
CharType c9 = toASCIILower(pos[9]);
if (c9 == 'x' && pos[10] == '(') {
transformType = CSSTransformValue::TranslateXTransformOperation;
} else if (c9 == 'y' && pos[10] == '(') {
transformType = CSSTransformValue::TranslateYTransformOperation;
} else if (c9 == 'z' && pos[10] == '(') {
transformType = CSSTransformValue::TranslateZTransformOperation;
} else if (c9 == '(') {
transformType = CSSTransformValue::TranslateTransformOperation;
expectedArgumentCount = 2;
argumentStart = 10;
} else if (c9 == '3' && toASCIILower(pos[10]) == 'd' && pos[11] == '(') {
transformType = CSSTransformValue::Translate3DTransformOperation;
expectedArgumentCount = 3;
argumentStart = 12;
} else {
return nullptr;
}
pos += argumentStart;
RefPtr<CSSTransformValue> transformValue = CSSTransformValue::create(transformType);
if (!parseTransformTranslateArguments(pos, end, expectedArgumentCount, transformValue.get()))
return nullptr;
return transformValue.release();
}
const bool isMatrix3d = toASCIILower(pos[0]) == 'm'
&& toASCIILower(pos[1]) == 'a'
&& toASCIILower(pos[2]) == 't'
&& toASCIILower(pos[3]) == 'r'
&& toASCIILower(pos[4]) == 'i'
&& toASCIILower(pos[5]) == 'x'
&& pos[6] == '3'
&& toASCIILower(pos[7]) == 'd'
&& pos[8] == '(';
if (isMatrix3d) {
pos += 9;
RefPtr<CSSTransformValue> transformValue = CSSTransformValue::create(CSSTransformValue::Matrix3DTransformOperation);
if (!parseTransformNumberArguments(pos, end, 16, transformValue.get()))
return nullptr;
return transformValue.release();
}
const bool isScale3d = toASCIILower(pos[0]) == 's'
&& toASCIILower(pos[1]) == 'c'
&& toASCIILower(pos[2]) == 'a'
&& toASCIILower(pos[3]) == 'l'
&& toASCIILower(pos[4]) == 'e'
&& pos[5] == '3'
&& toASCIILower(pos[6]) == 'd'
&& pos[7] == '(';
if (isScale3d) {
pos += 8;
RefPtr<CSSTransformValue> transformValue = CSSTransformValue::create(CSSTransformValue::Scale3DTransformOperation);
if (!parseTransformNumberArguments(pos, end, 3, transformValue.get()))
return nullptr;
return transformValue.release();
}
return nullptr;
}
template <typename CharType>
static PassRefPtr<CSSValueList> parseSimpleTransformList(CharType*& pos, CharType* end)
{
RefPtr<CSSValueList> transformList = nullptr;
while (pos < end) {
while (pos < end && isCSSSpace(*pos))
++pos;
RefPtr<CSSTransformValue> transformValue = parseSimpleTransformValue(pos, end);
if (!transformValue)
return nullptr;
if (!transformList)
transformList = CSSValueList::createSpaceSeparated();
transformList->append(transformValue.release());
if (pos < end) {
if (isCSSSpace(*pos))
return nullptr;
}
}
return transformList.release();
}
static bool parseSimpleTransform(MutableStylePropertySet* properties, CSSPropertyID propertyID, const String& string)
{
if (propertyID != CSSPropertyTransform && propertyID != CSSPropertyWebkitTransform)
return false;
if (string.isEmpty())
return false;
RefPtr<CSSValueList> transformList = nullptr;
if (string.is8Bit()) {
const LChar* pos = string.characters8();
const LChar* end = pos + string.length();
transformList = parseSimpleTransformList(pos, end);
if (!transformList)
return false;
} else {
const UChar* pos = string.characters16();
const UChar* end = pos + string.length();
transformList = parseSimpleTransformList(pos, end);
if (!transformList)
return false;
}
properties->addParsedProperty(CSSProperty(propertyID, transformList.release()));
return true;
}
PassRefPtr<CSSValueList> BisonCSSParser::parseFontFaceValue(const AtomicString& string)
{
if (string.isEmpty())
return nullptr;
RefPtr<MutableStylePropertySet> dummyStyle = MutableStylePropertySet::create();
if (!parseValue(dummyStyle.get(), CSSPropertyFontFamily, string, HTMLStandardMode, 0))
return nullptr;
RefPtr<CSSValue> fontFamily = dummyStyle->getPropertyCSSValue(CSSPropertyFontFamily);
if (!fontFamily->isValueList())
return nullptr;
return toCSSValueList(dummyStyle->getPropertyCSSValue(CSSPropertyFontFamily).get());
}
PassRefPtr<CSSValue> BisonCSSParser::parseAnimationTimingFunctionValue(const String& string)
{
if (string.isEmpty())
return nullptr;
RefPtr<MutableStylePropertySet> style = MutableStylePropertySet::create();
if (!parseValue(style.get(), CSSPropertyTransitionTimingFunction, string, HTMLStandardMode, 0))
return nullptr;
RefPtr<CSSValue> value = style->getPropertyCSSValue(CSSPropertyTransitionTimingFunction);
if (!value || value->isInitialValue() || value->isInheritedValue())
return nullptr;
CSSValueList* valueList = toCSSValueList(value.get());
if (valueList->length() > 1)
return nullptr;
return valueList->item(0);
}
bool BisonCSSParser::parseValue(MutableStylePropertySet* declaration, CSSPropertyID propertyID, const String& string, const Document& document)
{
ASSERT(!string.isEmpty());
CSSParserContext context(document);
if (parseSimpleLengthValue(declaration, propertyID, string, context.mode()))
return true;
if (parseColorValue(declaration, propertyID, string, context.mode()))
return true;
if (parseKeywordValue(declaration, propertyID, string, context))
return true;
BisonCSSParser parser(context);
return parser.parseValue(declaration, propertyID, string, static_cast<StyleSheetContents*>(0));
}
bool BisonCSSParser::parseValue(MutableStylePropertySet* declaration, CSSPropertyID propertyID, const String& string, CSSParserMode cssParserMode, StyleSheetContents* contextStyleSheet)
{
ASSERT(!string.isEmpty());
if (parseSimpleLengthValue(declaration, propertyID, string, cssParserMode))
return true;
if (parseColorValue(declaration, propertyID, string, cssParserMode))
return true;
CSSParserContext context;
if (contextStyleSheet)
context = contextStyleSheet->parserContext();
if (parseKeywordValue(declaration, propertyID, string, context))
return true;
if (parseSimpleTransform(declaration, propertyID, string))
return true;
BisonCSSParser parser(context);
return parser.parseValue(declaration, propertyID, string, contextStyleSheet);
}
bool BisonCSSParser::parseValue(MutableStylePropertySet* declaration, CSSPropertyID propertyID, const String& string, StyleSheetContents* contextStyleSheet)
{
setStyleSheet(contextStyleSheet);
setupParser("@-internal-value ", string, "");
m_id = propertyID;
cssyyparse(this);
m_rule = nullptr;
m_id = CSSPropertyInvalid;
bool ok = false;
if (!m_parsedProperties.isEmpty()) {
ok = true;
declaration->addParsedProperties(m_parsedProperties);
clearProperties();
}
return ok;
}
// The color will only be changed when string contains a valid CSS color, so callers
// can set it to a default color and ignore the boolean result.
bool BisonCSSParser::parseColor(RGBA32& color, const String& string, bool strict)
{
// First try creating a color specified by name, rgba(), rgb() or "#" syntax.
if (CSSPropertyParser::fastParseColor(color, string, strict))
return true;
BisonCSSParser parser(strictCSSParserContext());
// In case the fast-path parser didn't understand the color, try the full parser.
if (!parser.parseColor(string))
return false;
CSSValue* value = parser.m_parsedProperties.first().value();
if (!value->isPrimitiveValue())
return false;
CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
if (!primitiveValue->isRGBColor())
return false;
color = primitiveValue->getRGBA32Value();
return true;
}
StyleColor BisonCSSParser::colorFromRGBColorString(const String& colorString)
{
// FIXME: Rework css parser so it is more SVG aware.
RGBA32 color;
if (parseColor(color, colorString.stripWhiteSpace()))
return StyleColor(color);
// FIXME: This branch catches the string currentColor, but we should error if we have an illegal color value.
return StyleColor::currentColor();
}
bool BisonCSSParser::parseColor(const String& string)
{
setupParser("@-internal-decls color:", string, "");
cssyyparse(this);
m_rule = nullptr;
return !m_parsedProperties.isEmpty() && m_parsedProperties.first().id() == CSSPropertyColor;
}
bool BisonCSSParser::parseSystemColor(RGBA32& color, const String& string)
{
CSSParserString cssColor;
cssColor.init(string);
CSSValueID id = cssValueKeywordID(cssColor);
if (!CSSPropertyParser::isSystemColor(id))
return false;
Color parsedColor = RenderTheme::theme().systemColor(id);
color = parsedColor.rgb();
return true;
}
void BisonCSSParser::parseSelector(const String& string, CSSSelectorList& selectorList)
{
m_selectorListForParseSelector = &selectorList;
setupParser("@-internal-selector ", string, "");
cssyyparse(this);
m_selectorListForParseSelector = 0;
}
PassRefPtr<ImmutableStylePropertySet> BisonCSSParser::parseInlineStyleDeclaration(const String& string, Element* element)
{
Document& document = element->document();
CSSParserContext context = CSSParserContext(document.elementSheet().contents()->parserContext());
return BisonCSSParser(context).parseDeclaration(string, document.elementSheet().contents());
}
PassRefPtr<ImmutableStylePropertySet> BisonCSSParser::parseDeclaration(const String& string, StyleSheetContents* contextStyleSheet)
{
setStyleSheet(contextStyleSheet);
setupParser("@-internal-decls ", string, "");
cssyyparse(this);
m_rule = nullptr;
RefPtr<ImmutableStylePropertySet> style = createStylePropertySet();
clearProperties();
return style.release();
}
bool BisonCSSParser::parseDeclaration(MutableStylePropertySet* declaration, const String& string, CSSParserObserver* observer, StyleSheetContents* contextStyleSheet)
{
setStyleSheet(contextStyleSheet);
TemporaryChange<CSSParserObserver*> scopedObsever(m_observer, observer);
setupParser("@-internal-decls ", string, "");
if (m_observer) {
m_observer->startRuleHeader(CSSRuleSourceData::STYLE_RULE, 0);
m_observer->endRuleHeader(1);
m_observer->startRuleBody(0);
}
cssyyparse(this);
m_rule = nullptr;
bool ok = false;
if (!m_parsedProperties.isEmpty()) {
ok = true;
declaration->addParsedProperties(m_parsedProperties);
clearProperties();
}
if (m_observer)
m_observer->endRuleBody(string.length(), false);
return ok;
}
bool BisonCSSParser::parseAttributeMatchType(CSSSelector::AttributeMatchType& matchType, const String& string)
{
if (!RuntimeEnabledFeatures::cssAttributeCaseSensitivityEnabled() && !isUASheetBehavior(m_context.mode()))
return false;
if (string == "i") {
matchType = CSSSelector::CaseInsensitive;
return true;
}
return false;
}
static inline void filterProperties(const Vector<CSSProperty, 256>& input, Vector<CSSProperty, 256>& output, size_t& unusedEntries, BitArray<numCSSProperties>& seenProperties)
{
// Add properties in reverse order so that highest priority definitions are reached first. Duplicate definitions can then be ignored when found.
for (int i = input.size() - 1; i >= 0; --i) {
const CSSProperty& property = input[i];
const unsigned propertyIDIndex = property.id() - firstCSSProperty;
if (seenProperties.get(propertyIDIndex))
continue;
seenProperties.set(propertyIDIndex);
output[--unusedEntries] = property;
}
}
PassRefPtr<ImmutableStylePropertySet> BisonCSSParser::createStylePropertySet()
{
BitArray<numCSSProperties> seenProperties;
size_t unusedEntries = m_parsedProperties.size();
Vector<CSSProperty, 256> results(unusedEntries);
filterProperties(m_parsedProperties, results, unusedEntries, seenProperties);
if (unusedEntries)
results.remove(0, unusedEntries);
return ImmutableStylePropertySet::create(results.data(), results.size(), HTMLStandardMode);
}
void BisonCSSParser::rollbackLastProperties(int num)
{
ASSERT(num >= 0);
ASSERT(m_parsedProperties.size() >= static_cast<unsigned>(num));
m_parsedProperties.shrink(m_parsedProperties.size() - num);
}
void BisonCSSParser::clearProperties()
{
m_parsedProperties.clear();
m_numParsedPropertiesBeforeMarginBox = INVALID_NUM_PARSED_PROPERTIES;
}
void BisonCSSParser::setCurrentProperty(CSSPropertyID propId)
{
m_id = propId;
}
bool BisonCSSParser::parseValue(CSSPropertyID propId)
{
return CSSPropertyParser::parseValue(propId, m_valueList.get(), m_context, m_inViewport, m_parsedProperties, m_ruleHeaderType);
}
class TransformOperationInfo {
public:
TransformOperationInfo(const CSSParserString& name)
: m_type(CSSTransformValue::UnknownTransformOperation)
, m_argCount(1)
, m_allowSingleArgument(false)
, m_unit(CSSPropertyParser::FUnknown)
{
const UChar* characters;
unsigned nameLength = name.length();
const unsigned longestNameLength = 12;
UChar characterBuffer[longestNameLength];
if (name.is8Bit()) {
unsigned length = std::min(longestNameLength, nameLength);
const LChar* characters8 = name.characters8();
for (unsigned i = 0; i < length; ++i)
characterBuffer[i] = characters8[i];
characters = characterBuffer;
} else
characters = name.characters16();
SWITCH(characters, nameLength) {
CASE("skew(") {
m_unit = CSSPropertyParser::FAngle;
m_type = CSSTransformValue::SkewTransformOperation;
m_allowSingleArgument = true;
m_argCount = 3;
}
CASE("scale(") {
m_unit = CSSPropertyParser::FNumber;
m_type = CSSTransformValue::ScaleTransformOperation;
m_allowSingleArgument = true;
m_argCount = 3;
}
CASE("skewx(") {
m_unit = CSSPropertyParser::FAngle;
m_type = CSSTransformValue::SkewXTransformOperation;
}
CASE("skewy(") {
m_unit = CSSPropertyParser::FAngle;
m_type = CSSTransformValue::SkewYTransformOperation;
}
CASE("matrix(") {
m_unit = CSSPropertyParser::FNumber;
m_type = CSSTransformValue::MatrixTransformOperation;
m_argCount = 11;
}
CASE("rotate(") {
m_unit = CSSPropertyParser::FAngle;
m_type = CSSTransformValue::RotateTransformOperation;
}
CASE("scalex(") {
m_unit = CSSPropertyParser::FNumber;
m_type = CSSTransformValue::ScaleXTransformOperation;
}
CASE("scaley(") {
m_unit = CSSPropertyParser::FNumber;
m_type = CSSTransformValue::ScaleYTransformOperation;
}
CASE("scalez(") {
m_unit = CSSPropertyParser::FNumber;
m_type = CSSTransformValue::ScaleZTransformOperation;
}
CASE("scale3d(") {
m_unit = CSSPropertyParser::FNumber;
m_type = CSSTransformValue::Scale3DTransformOperation;
m_argCount = 5;
}
CASE("rotatex(") {
m_unit = CSSPropertyParser::FAngle;
m_type = CSSTransformValue::RotateXTransformOperation;
}
CASE("rotatey(") {
m_unit = CSSPropertyParser::FAngle;
m_type = CSSTransformValue::RotateYTransformOperation;
}
CASE("rotatez(") {
m_unit = CSSPropertyParser::FAngle;
m_type = CSSTransformValue::RotateZTransformOperation;
}
CASE("matrix3d(") {
m_unit = CSSPropertyParser::FNumber;
m_type = CSSTransformValue::Matrix3DTransformOperation;
m_argCount = 31;
}
CASE("rotate3d(") {
m_unit = CSSPropertyParser::FNumber;
m_type = CSSTransformValue::Rotate3DTransformOperation;
m_argCount = 7;
}
CASE("translate(") {
m_unit = CSSPropertyParser::FLength | CSSPropertyParser::FPercent;
m_type = CSSTransformValue::TranslateTransformOperation;
m_allowSingleArgument = true;
m_argCount = 3;
}
CASE("translatex(") {
m_unit = CSSPropertyParser::FLength | CSSPropertyParser::FPercent;
m_type = CSSTransformValue::TranslateXTransformOperation;
}
CASE("translatey(") {
m_unit = CSSPropertyParser::FLength | CSSPropertyParser::FPercent;
m_type = CSSTransformValue::TranslateYTransformOperation;
}
CASE("translatez(") {
m_unit = CSSPropertyParser::FLength | CSSPropertyParser::FPercent;
m_type = CSSTransformValue::TranslateZTransformOperation;
}
CASE("perspective(") {
m_unit = CSSPropertyParser::FNumber;
m_type = CSSTransformValue::PerspectiveTransformOperation;
}
CASE("translate3d(") {
m_unit = CSSPropertyParser::FLength | CSSPropertyParser::FPercent;
m_type = CSSTransformValue::Translate3DTransformOperation;
m_argCount = 5;
}
}
}
CSSTransformValue::TransformOperationType type() const { return m_type; }
unsigned argCount() const { return m_argCount; }
CSSPropertyParser::Units unit() const { return m_unit; }
bool unknown() const { return m_type == CSSTransformValue::UnknownTransformOperation; }
bool hasCorrectArgCount(unsigned argCount) { return m_argCount == argCount || (m_allowSingleArgument && argCount == 1); }
private:
CSSTransformValue::TransformOperationType m_type;
unsigned m_argCount;
bool m_allowSingleArgument;
CSSPropertyParser::Units m_unit;
};
PassRefPtr<CSSValueList> CSSPropertyParser::parseTransform(CSSPropertyID propId)
{
if (!m_valueList)
return nullptr;
RefPtr<CSSValueList> list = CSSValueList::createSpaceSeparated();
for (CSSParserValue* value = m_valueList->current(); value; value = m_valueList->next()) {
RefPtr<CSSValue> parsedTransformValue = parseTransformValue(propId, value);
if (!parsedTransformValue)
return nullptr;
list->append(parsedTransformValue.release());
}
return list.release();
}
PassRefPtr<CSSValue> CSSPropertyParser::parseTransformValue(CSSPropertyID propId, CSSParserValue *value)
{
if (value->unit != CSSParserValue::Function || !value->function)
return nullptr;
// Every primitive requires at least one argument.
CSSParserValueList* args = value->function->args.get();
if (!args)
return nullptr;
// See if the specified primitive is one we understand.
TransformOperationInfo info(value->function->name);
if (info.unknown())
return nullptr;
if (!info.hasCorrectArgCount(args->size()))
return nullptr;
// The transform is a list of functional primitives that specify transform operations.
// We collect a list of CSSTransformValues, where each value specifies a single operation.
// Create the new CSSTransformValue for this operation and add it to our list.
RefPtr<CSSTransformValue> transformValue = CSSTransformValue::create(info.type());
// Snag our values.
CSSParserValue* a = args->current();
unsigned argNumber = 0;
while (a) {
CSSPropertyParser::Units unit = info.unit();
if (info.type() == CSSTransformValue::Rotate3DTransformOperation && argNumber == 3) {
// 4th param of rotate3d() is an angle rather than a bare number, validate it as such
if (!validUnit(a, FAngle, HTMLStandardMode))
return nullptr;
} else if (info.type() == CSSTransformValue::Translate3DTransformOperation && argNumber == 2) {
// 3rd param of translate3d() cannot be a percentage
if (!validUnit(a, FLength, HTMLStandardMode))
return nullptr;
} else if (info.type() == CSSTransformValue::TranslateZTransformOperation && !argNumber) {
// 1st param of translateZ() cannot be a percentage
if (!validUnit(a, FLength, HTMLStandardMode))
return nullptr;
} else if (info.type() == CSSTransformValue::PerspectiveTransformOperation && !argNumber) {
// 1st param of perspective() must be a non-negative number (deprecated) or length.
if ((propId == CSSPropertyWebkitTransform && !validUnit(a, FNumber | FLength | FNonNeg, HTMLStandardMode))
|| (propId == CSSPropertyTransform && !validUnit(a, FLength | FNonNeg, HTMLStandardMode)))
return nullptr;
} else if (!validUnit(a, unit, HTMLStandardMode)) {
return nullptr;
}
// Add the value to the current transform operation.
transformValue->append(createPrimitiveNumericValue(a));
a = args->next();
if (!a)
break;
if (a->unit != CSSParserValue::Operator || a->iValue != ',')
return nullptr;
a = args->next();
argNumber++;
}
return transformValue.release();
}
void BisonCSSParser::ensureLineEndings()
{
if (!m_lineEndings)
m_lineEndings = lineEndings(*m_source);
}
CSSParserSelector* BisonCSSParser::createFloatingSelectorWithTagName(const QualifiedName& tagQName)
{
CSSParserSelector* selector = new CSSParserSelector(tagQName);
m_floatingSelectors.append(selector);
return selector;
}
CSSParserSelector* BisonCSSParser::createFloatingSelector()
{
CSSParserSelector* selector = new CSSParserSelector;
m_floatingSelectors.append(selector);
return selector;
}
PassOwnPtr<CSSParserSelector> BisonCSSParser::sinkFloatingSelector(CSSParserSelector* selector)
{
if (selector) {
size_t index = m_floatingSelectors.reverseFind(selector);
ASSERT(index != kNotFound);
m_floatingSelectors.remove(index);
}
return adoptPtr(selector);
}
Vector<OwnPtr<CSSParserSelector> >* BisonCSSParser::createFloatingSelectorVector()
{
Vector<OwnPtr<CSSParserSelector> >* selectorVector = new Vector<OwnPtr<CSSParserSelector> >;
m_floatingSelectorVectors.append(selectorVector);
return selectorVector;
}
PassOwnPtr<Vector<OwnPtr<CSSParserSelector> > > BisonCSSParser::sinkFloatingSelectorVector(Vector<OwnPtr<CSSParserSelector> >* selectorVector)
{
if (selectorVector) {
size_t index = m_floatingSelectorVectors.reverseFind(selectorVector);
ASSERT(index != kNotFound);
m_floatingSelectorVectors.remove(index);
}
return adoptPtr(selectorVector);
}
CSSParserValueList* BisonCSSParser::createFloatingValueList()
{
CSSParserValueList* list = new CSSParserValueList;
m_floatingValueLists.append(list);
return list;
}
PassOwnPtr<CSSParserValueList> BisonCSSParser::sinkFloatingValueList(CSSParserValueList* list)
{
if (list) {
size_t index = m_floatingValueLists.reverseFind(list);
ASSERT(index != kNotFound);
m_floatingValueLists.remove(index);
}
return adoptPtr(list);
}
CSSParserFunction* BisonCSSParser::createFloatingFunction()
{
CSSParserFunction* function = new CSSParserFunction;
m_floatingFunctions.append(function);
return function;
}
CSSParserFunction* BisonCSSParser::createFloatingFunction(const CSSParserString& name, PassOwnPtr<CSSParserValueList> args)
{
CSSParserFunction* function = createFloatingFunction();
function->name = name;
function->args = args;
return function;
}
PassOwnPtr<CSSParserFunction> BisonCSSParser::sinkFloatingFunction(CSSParserFunction* function)
{
if (function) {
size_t index = m_floatingFunctions.reverseFind(function);
ASSERT(index != kNotFound);
m_floatingFunctions.remove(index);
}
return adoptPtr(function);
}
CSSParserValue& BisonCSSParser::sinkFloatingValue(CSSParserValue& value)
{
if (value.unit == CSSParserValue::Function) {
size_t index = m_floatingFunctions.reverseFind(value.function);
ASSERT(index != kNotFound);
m_floatingFunctions.remove(index);
}
return value;
}
StyleRuleBase* BisonCSSParser::createSupportsRule(bool conditionIsSupported, RuleList* rules)
{
m_allowImportRules = m_allowNamespaceDeclarations = false;
RefPtr<CSSRuleSourceData> data = popSupportsRuleData();
RefPtr<StyleRuleSupports> rule = nullptr;
String conditionText;
unsigned conditionOffset = data->ruleHeaderRange.start + 9;
unsigned conditionLength = data->ruleHeaderRange.length() - 9;
if (m_tokenizer.is8BitSource())
conditionText = String(m_tokenizer.m_dataStart8.get() + conditionOffset, conditionLength).stripWhiteSpace();
else
conditionText = String(m_tokenizer.m_dataStart16.get() + conditionOffset, conditionLength).stripWhiteSpace();
if (rules) {
rule = StyleRuleSupports::create(conditionText, conditionIsSupported, *rules);
} else {
RuleList emptyRules;
rule = StyleRuleSupports::create(conditionText, conditionIsSupported, emptyRules);
}
StyleRuleSupports* result = rule.get();
m_parsedRules.append(rule.release());
return result;
}
void BisonCSSParser::markSupportsRuleHeaderStart()
{
if (!m_supportsRuleDataStack)
m_supportsRuleDataStack = adoptPtr(new RuleSourceDataList());
RefPtr<CSSRuleSourceData> data = CSSRuleSourceData::create(CSSRuleSourceData::SUPPORTS_RULE);
data->ruleHeaderRange.start = m_tokenizer.tokenStartOffset();
m_supportsRuleDataStack->append(data);
}
void BisonCSSParser::markSupportsRuleHeaderEnd()
{
ASSERT(m_supportsRuleDataStack && !m_supportsRuleDataStack->isEmpty());
if (m_tokenizer.is8BitSource())
m_supportsRuleDataStack->last()->ruleHeaderRange.end = m_tokenizer.tokenStart<LChar>() - m_tokenizer.m_dataStart8.get();
else
m_supportsRuleDataStack->last()->ruleHeaderRange.end = m_tokenizer.tokenStart<UChar>() - m_tokenizer.m_dataStart16.get();
}
PassRefPtr<CSSRuleSourceData> BisonCSSParser::popSupportsRuleData()
{
ASSERT(m_supportsRuleDataStack && !m_supportsRuleDataStack->isEmpty());
RefPtr<CSSRuleSourceData> data = m_supportsRuleDataStack->last();
m_supportsRuleDataStack->removeLast();
return data.release();
}
BisonCSSParser::RuleList* BisonCSSParser::createRuleList()
{
OwnPtr<RuleList> list = adoptPtr(new RuleList);
RuleList* listPtr = list.get();
m_parsedRuleLists.append(list.release());
return listPtr;
}
BisonCSSParser::RuleList* BisonCSSParser::appendRule(RuleList* ruleList, StyleRuleBase* rule)
{
if (rule) {
if (!ruleList)
ruleList = createRuleList();
ruleList->append(rule);
}
return ruleList;
}
template <typename CharacterType>
ALWAYS_INLINE static void makeLower(const CharacterType* input, CharacterType* output, unsigned length)
{
// 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(input, length)) {
// Fast case for all-ASCII.
for (unsigned i = 0; i < length; i++)
output[i] = toASCIILower(input[i]);
} else {
for (unsigned i = 0; i < length; i++)
output[i] = Unicode::toLower(input[i]);
}
}
void BisonCSSParser::tokenToLowerCase(CSSParserString& token)
{
// Since it's our internal token, we know that we created it out
// of our writable work buffers. Therefore the const_cast is just
// ugly and not a potential crash.
size_t length = token.length();
if (token.is8Bit()) {
makeLower(token.characters8(), const_cast<LChar*>(token.characters8()), length);
} else {
makeLower(token.characters16(), const_cast<UChar*>(token.characters16()), length);
}
}
void BisonCSSParser::endInvalidRuleHeader()
{
if (m_ruleHeaderType == CSSRuleSourceData::UNKNOWN_RULE)
return;
CSSParserLocation location;
location.lineNumber = m_tokenizer.m_lineNumber;
location.offset = m_ruleHeaderStartOffset;
if (m_tokenizer.is8BitSource())
location.token.init(m_tokenizer.m_dataStart8.get() + m_ruleHeaderStartOffset, 0);
else
location.token.init(m_tokenizer.m_dataStart16.get() + m_ruleHeaderStartOffset, 0);
reportError(location, m_ruleHeaderType == CSSRuleSourceData::STYLE_RULE ? InvalidSelectorCSSError : InvalidRuleCSSError);
endRuleHeader();
}
StyleRuleBase* BisonCSSParser::createStyleRule(Vector<OwnPtr<CSSParserSelector> >* selectors)
{
StyleRule* result = 0;
if (selectors) {
m_allowImportRules = m_allowNamespaceDeclarations = false;
RefPtr<StyleRule> rule = StyleRule::create();
rule->parserAdoptSelectorVector(*selectors);
rule->setProperties(createStylePropertySet());
result = rule.get();
m_parsedRules.append(rule.release());
}
clearProperties();
return result;
}
StyleRuleBase* BisonCSSParser::createFontFaceRule()
{
m_allowImportRules = m_allowNamespaceDeclarations = false;
for (unsigned i = 0; i < m_parsedProperties.size(); ++i) {
CSSProperty& property = m_parsedProperties[i];
if (property.id() == CSSPropertyFontVariant && property.value()->isPrimitiveValue())
property.wrapValueInCommaSeparatedList();
else if (property.id() == CSSPropertyFontFamily && (!property.value()->isValueList() || toCSSValueList(property.value())->length() != 1)) {
// Unlike font-family property, font-family descriptor in @font-face rule
// has to be a value list with exactly one family name. It cannot have a
// have 'initial' value and cannot 'inherit' from parent.
// See http://dev.w3.org/csswg/css3-fonts/#font-family-desc
clearProperties();
return 0;
}
}
RefPtr<StyleRuleFontFace> rule = StyleRuleFontFace::create();
rule->setProperties(createStylePropertySet());
clearProperties();
StyleRuleFontFace* result = rule.get();
m_parsedRules.append(rule.release());
return result;
}
CSSParserSelector* BisonCSSParser::rewriteSpecifiersWithNamespaceIfNeeded(CSSParserSelector* specifiers)
{
if (m_defaultNamespace != starAtom)
return rewriteSpecifiersWithElementName(nullAtom, starAtom, specifiers, /*tagIsForNamespaceRule*/true);
return specifiers;
}
CSSParserSelector* BisonCSSParser::rewriteSpecifiersWithElementName(const AtomicString& namespacePrefix, const AtomicString& elementName, CSSParserSelector* specifiers, bool tagIsForNamespaceRule)
{
QualifiedName tag(elementName);
// *:host never matches, so we can't discard the * otherwise we can't tell the
// difference between *:host and just :host.
if (tag == anyName && !specifiers->hasHostPseudoSelector())
return specifiers;
specifiers->prependTagSelector(tag, tagIsForNamespaceRule);
return specifiers;
}
CSSParserSelector* BisonCSSParser::rewriteSpecifiers(CSSParserSelector* specifiers, CSSParserSelector* newSpecifier)
{
specifiers->appendTagHistory(sinkFloatingSelector(newSpecifier));
return specifiers;
}
void BisonCSSParser::startDeclarationsForMarginBox()
{
m_numParsedPropertiesBeforeMarginBox = m_parsedProperties.size();
}
void BisonCSSParser::endDeclarationsForMarginBox()
{
rollbackLastProperties(m_parsedProperties.size() - m_numParsedPropertiesBeforeMarginBox);
m_numParsedPropertiesBeforeMarginBox = INVALID_NUM_PARSED_PROPERTIES;
}
void BisonCSSParser::startRule()
{
if (!m_observer)
return;
ASSERT(m_ruleHasHeader);
m_ruleHasHeader = false;
}
void BisonCSSParser::endRule(bool valid)
{
if (!m_observer)
return;
if (m_ruleHasHeader)
m_observer->endRuleBody(m_tokenizer.safeUserStringTokenOffset(), !valid);
m_ruleHasHeader = true;
}
void BisonCSSParser::startRuleHeader(CSSRuleSourceData::Type ruleType)
{
m_ruleHeaderType = ruleType;
m_ruleHeaderStartOffset = m_tokenizer.safeUserStringTokenOffset();
m_ruleHeaderStartLineNumber = m_tokenizer.m_tokenStartLineNumber;
if (m_observer) {
ASSERT(!m_ruleHasHeader);
m_observer->startRuleHeader(ruleType, m_ruleHeaderStartOffset);
m_ruleHasHeader = true;
}
}
void BisonCSSParser::endRuleHeader()
{
ASSERT(m_ruleHeaderType != CSSRuleSourceData::UNKNOWN_RULE);
m_ruleHeaderType = CSSRuleSourceData::UNKNOWN_RULE;
if (m_observer) {
ASSERT(m_ruleHasHeader);
m_observer->endRuleHeader(m_tokenizer.safeUserStringTokenOffset());
}
}
void BisonCSSParser::startSelector()
{
if (m_observer)
m_observer->startSelector(m_tokenizer.safeUserStringTokenOffset());
}
void BisonCSSParser::endSelector()
{
if (m_observer)
m_observer->endSelector(m_tokenizer.safeUserStringTokenOffset());
}
void BisonCSSParser::startRuleBody()
{
if (m_observer)
m_observer->startRuleBody(m_tokenizer.safeUserStringTokenOffset());
}
void BisonCSSParser::startProperty()
{
if (m_observer)
m_observer->startProperty(m_tokenizer.safeUserStringTokenOffset());
}
void BisonCSSParser::endProperty(bool isPropertyParsed, CSSParserError errorType)
{
m_id = CSSPropertyInvalid;
if (m_observer)
m_observer->endProperty(isPropertyParsed, m_tokenizer.safeUserStringTokenOffset(), errorType);
}
void BisonCSSParser::startEndUnknownRule()
{
if (m_observer)
m_observer->startEndUnknownRule();
}
}
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