Add property parser code path based on CSSParserTokenRange

Source/core/css/parser/LegacyCSSPropertyParser.cpp

 /*
  * 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.
  *
@@ skipping 56 matching lines @@
 template <unsigned N>
 static bool equalIgnoringCase(const CSSParserString& a, const char (&b)[N])
 {
     unsigned length = N - 1; // Ignore the trailing null character
     if (a.length() != length)
         return false;
 
     return a.is8Bit() ? WTF::equalIgnoringCase(b, a.characters8(), length) : WTF::equalIgnoringCase(b, a.characters16(), length);
 }
 
-CSSPropertyParser::CSSPropertyParser(CSSParserValueList* valueList,
-    const CSSParserContext& context, WillBeHeapVector<CSSProperty, 256>& parsedProperties,
-    StyleRule::Type ruleType)
-    : m_valueList(valueList)
-    , m_context(context)
-    , m_parsedProperties(parsedProperties)
-    , m_ruleType(ruleType)
-    , m_inParseShorthand(0)
-    , m_currentShorthand(CSSPropertyInvalid)
-    , m_implicitShorthand(false)
-{
-}
-
-bool CSSPropertyParser::parseValue(CSSPropertyID unresolvedProperty, bool important,
-    CSSParserValueList* valueList, const CSSParserContext& context,
-    WillBeHeapVector<CSSProperty, 256>& parsedProperties, StyleRule::Type ruleType)
-{
-    int parsedPropertiesSize = parsedProperties.size();
-
-    CSSPropertyParser parser(valueList, context, parsedProperties, ruleType);
-    CSSPropertyID resolvedProperty = resolveCSSPropertyID(unresolvedProperty);
-    bool parseSuccess;
-
-    if (ruleType == StyleRule::Viewport) {
-        parseSuccess = (RuntimeEnabledFeatures::cssViewportEnabled() || isUASheetBehavior(context.mode()))
-            && parser.parseViewportProperty(resolvedProperty, important);
-    } else if (ruleType == StyleRule::FontFace) {
-        parseSuccess = parser.parseFontFaceDescriptor(resolvedProperty);
-    } else {
-        parseSuccess = parser.parseValue(unresolvedProperty, important);
-    }
-
-    // This doesn't count UA style sheets
-    if (parseSuccess && context.useCounter())
-        context.useCounter()->count(context, unresolvedProperty);
-
-    if (!parseSuccess)
-        parser.rollbackLastProperties(parsedProperties.size() - parsedPropertiesSize);
-
-    return parseSuccess;
-}
-
 void CSSPropertyParser::addProperty(CSSPropertyID propId, PassRefPtrWillBeRawPtr<CSSValue> value, bool important, bool implicit)
 {
     ASSERT(!isPropertyAlias(propId));
 
     int shorthandIndex = 0;
     bool setFromShorthand = false;
 
     if (m_currentShorthand) {
         Vector<StylePropertyShorthand, 4> shorthands;
         getMatchingShorthandsForLonghand(propId, &shorthands);
@@ skipping 333 matching lines @@
 
     if (CSSParserFastPaths::isKeywordPropertyID(propId)) {
         if (!CSSParserFastPaths::isValidKeywordPropertyAndValue(propId, id))
             return false;
         if (m_valueList->next() && !inShorthand())
             return false;
         addProperty(propId, cssValuePool().createIdentifierValue(id), important);
         return true;
     }
 
+    RefPtrWillBeRawPtr<CSSValue> parsedValue = nullptr;
+    if ((parsedValue = parseSingleValue(propId))) {
+        if (!m_range.atEnd())
+            return false;
+        addProperty(propId, parsedValue.release(), important);
+        return true;
+    }
+    if (parseShorthand(propId, important))
+        return true;
+
     bool validPrimitive = false;
     Units unitless = FUnknown;
-    RefPtrWillBeRawPtr<CSSValue> parsedValue = nullptr;
 
     switch (propId) {
     case CSSPropertySize: // <length>{1,2} | auto | [ <page-size> || [ portrait | landscape] ]
         parsedValue = parseSize();
         break;
-    case CSSPropertyQuotes: // [<string> <string>]+ | none
-        if (id == CSSValueNone)
-            validPrimitive = true;
-        else
-            parsedValue = parseQuotes();
-        break;
 
     case CSSPropertyContent:              // [ <string> | <uri> | <counter> | attr(X) | open-quote |
         // close-quote | no-open-quote | no-close-quote ]+ | inherit
         parsedValue = parseContent();
         break;
     case CSSPropertyClip:                 // <shape> | auto | inherit
         if (id == CSSValueAuto)
             validPrimitive = true;
         else if (value->m_unit == CSSParserValue::Function)
             parsedValue = parseClipShape();
         break;
 
     /* Start of supported CSS properties with validation. This is needed for parseShorthand to work
      * correctly and allows optimization in blink::applyRule(..)
      */
-    case CSSPropertyOverflow: {
-        ShorthandScope scope(this, propId);
-        if (!parseValue(CSSPropertyOverflowY, important) || m_valueList->current())
-            return false;
-
-        RefPtrWillBeRawPtr<CSSValue> overflowXValue = nullptr;
-
-        // FIXME: -webkit-paged-x or -webkit-paged-y only apply to overflow-y. If this value has been
-        // set using the shorthand, then for now overflow-x will default to auto, but once we implement
-        // pagination controls, it should default to hidden. If the overflow-y value is anything but
-        // paged-x or paged-y, then overflow-x and overflow-y should have the same value.
-        if (id == CSSValueWebkitPagedX || id == CSSValueWebkitPagedY)
-            overflowXValue = cssValuePool().createIdentifierValue(CSSValueAuto);
-        else
-            overflowXValue = m_parsedProperties.last().value();
-        addProperty(CSSPropertyOverflowX, overflowXValue.release(), important);
-        return true;
-    }
 
     case CSSPropertyTextAlign:
         // left | right | center | justify | -webkit-left | -webkit-right | -webkit-center | -webkit-match-parent
         // | start | end | <string> | inherit | -webkit-auto (converted to start)
         // FIXME: <string> not supported right now
         if ((id >= CSSValueWebkitAuto && id <= CSSValueWebkitMatchParent) || id == CSSValueStart || id == CSSValueEnd) {
             validPrimitive = true;
         }
         break;
 
@@ skipping 745 matching lines @@
         break;
 
     case CSSPropertyGridTemplate:
         ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
         return parseGridTemplateShorthand(important);
 
     case CSSPropertyGrid:
         ASSERT(RuntimeEnabledFeatures::cssGridLayoutEnabled());
         return parseGridShorthand(important);
 
-    case CSSPropertyWebkitMarginCollapse: {
-        ShorthandScope scope(this, CSSPropertyWebkitMarginCollapse);
-        if (!parseValue(webkitMarginCollapseShorthand().properties()[0], important))
-            return false;
-        if (!m_valueList->current()) {
-            CSSValue* value = m_parsedProperties.last().value();
-            addProperty(webkitMarginCollapseShorthand().properties()[1], value, important);
-            return true;
-        }
-        if (!parseValue(webkitMarginCollapseShorthand().properties()[1], important))
-            return false;
-        return !m_valueList->current();
-    }
     case CSSPropertyWebkitColumnCount:
         parsedValue = parseColumnCount();
         break;
     case CSSPropertyWebkitColumnGap:         // normal | <length>
         if (id == CSSValueNormal)
             validPrimitive = true;
         else
             validPrimitive = validUnit(value, FLength | FNonNeg);
         break;
     case CSSPropertyWebkitColumnSpan: // none | all | 1 (will be dropped in the unprefixed property)
         validPrimitive = id == CSSValueAll || id == CSSValueNone || (value->unit() == CSSPrimitiveValue::UnitType::Number && value->fValue == 1);
         break;
     case CSSPropertyWebkitColumnWidth:         // auto | <length>
         parsedValue = parseColumnWidth();
         break;
-    case CSSPropertyWillChange:
-        parsedValue = parseWillChange();
-        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 && !isCalculation(value) && validUnit(value, FInteger | FPercent | FNonNeg) && (value->unit() == CSSPrimitiveValue::UnitType::Percentage || value->fValue));
         break;
 
     case CSSPropertyWebkitFontSizeDelta: // <length>
         validPrimitive = validUnit(value, FLength | FUnitlessQuirk);
         break;
 
-    case CSSPropertyWebkitHighlight:
-        if (id == CSSValueNone) {
-            validPrimitive = true;
-        } else if (value->unit() == CSSPrimitiveValue::UnitType::String) {
-            parsedValue = createPrimitiveStringValue(value);
-            m_valueList->next();
-        }
-        break;
-
     case CSSPropertyWebkitHyphenateCharacter:
     case CSSPropertyWebkitLocale:
         if (id == CSSValueAuto) {
             validPrimitive = true;
         } else if (value->unit() == CSSPrimitiveValue::UnitType::String) {
             parsedValue = createPrimitiveStringValue(value);
             m_valueList->next();
         }
         break;
 
@@ skipping 88 matching lines @@
     case CSSPropertyWebkitColumnRule:
         return parseShorthand(propId, webkitColumnRuleShorthand(), important);
     case CSSPropertyWebkitTextStroke:
         return parseShorthand(propId, webkitTextStrokeShorthand(), important);
     case CSSPropertyAnimation:
         return parseAnimationShorthand(unresolvedProperty == CSSPropertyAliasWebkitAnimation, important);
     case CSSPropertyTransition:
         return parseTransitionShorthand(important);
     case CSSPropertyInvalid:
         return false;
-    case CSSPropertyPage:
-        parsedValue = parsePage();
-        break;
     // CSS Text Layout Module Level 3: Vertical writing support
     case CSSPropertyWebkitTextEmphasis:
         return parseShorthand(propId, webkitTextEmphasisShorthand(), important);
 
     case CSSPropertyWebkitTextEmphasisStyle:
         parsedValue = parseTextEmphasisStyle();
         break;
 
     case CSSPropertyWebkitTextOrientation:
         // FIXME: For now just support sideways, sideways-right, upright and vertical-right.
@@ skipping 57 matching lines @@
     // Properties below are validated inside parseViewportProperty, because we
     // check for parser state. We need to invalidate if someone adds them outside
     // a @viewport rule.
     case CSSPropertyMaxZoom:
     case CSSPropertyMinZoom:
     case CSSPropertyOrientation:
     case CSSPropertyUserZoom:
         validPrimitive = false;
         break;
 
+    // These were not accepted by the new path above so we should return false.
+    case CSSPropertyWebkitMarginCollapse:
+    case CSSPropertyWillChange:
+    case CSSPropertyPage:
+    case CSSPropertyOverflow:
+    case CSSPropertyQuotes:
+    case CSSPropertyWebkitHighlight:
+        validPrimitive = false;
+        break;
+
     case CSSPropertyScrollSnapPointsX:
     case CSSPropertyScrollSnapPointsY:
         parsedValue = parseScrollSnapPoints();
         break;
     case CSSPropertyScrollSnapCoordinate:
         parsedValue = parseScrollSnapCoordinate();
         break;
     case CSSPropertyScrollSnapDestination:
         parsedValue = parsePosition(m_valueList);
         break;
@@ skipping 521 matching lines @@
 PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseScrollSnapCoordinate()
 {
     if (m_valueList->current()->id == CSSValueNone) {
         m_valueList->next();
         return cssValuePool().createIdentifierValue(CSSValueNone);
     }
 
     return parsePositionList(m_valueList);
 }
 
-PassRefPtrWillBeRawPtr<CSSPrimitiveValue> CSSPropertyParser::parsePage()
-{
-    CSSParserValue* value = m_valueList->current();
-    m_valueList->next();
-    ASSERT(value);
-
-    if (value->id == CSSValueAuto)
-        return cssValuePool().createIdentifierValue(value->id);
-    if (value->m_unit == CSSParserValue::Identifier)
-        return createPrimitiveCustomIdentValue(value);
-    return nullptr;
-}
-
 // <length>{1,2} | auto | [ <page-size> || [ portrait | landscape] ]
 PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parseSize()
 {
     CSSParserValue* value = m_valueList->current();
     ASSERT(value);
 
     RefPtrWillBeRawPtr<CSSValueList> parsedValues = CSSValueList::createSpaceSeparated();
 
     // First parameter.
     SizeParameterType paramType = parseSizeParameter(parsedValues.get(), value, None);
@@ skipping 46 matching lines @@
         if (validUnit(value, FLength | FNonNeg) && (prevParamType == None || prevParamType == Length)) {
             parsedValues->append(createPrimitiveNumericValue(value));
             return Length;
         }
         return None;
     default:
         return None;
     }
 }
 
-// [ <string> <string> ]+ | none, but none is handled in parseValue
-PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseQuotes()
-{
-    RefPtrWillBeRawPtr<CSSValueList> values = CSSValueList::createSpaceSeparated();
-    while (CSSParserValue* val = m_valueList->current()) {
-        RefPtrWillBeRawPtr<CSSValue> parsedValue = nullptr;
-        if (val->unit() != CSSPrimitiveValue::UnitType::String)
-            return nullptr;
-        parsedValue = createPrimitiveStringValue(val);
-        values->append(parsedValue.release());
-        m_valueList->next();
-    }
-    if (values->length() && values->length() % 2 == 0)
-        return values.release();
-    return nullptr;
-}
-
 // [ <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
 PassRefPtrWillBeRawPtr<CSSValueList> CSSPropertyParser::parseContent()
 {
     RefPtrWillBeRawPtr<CSSValueList> values = CSSValueList::createSpaceSeparated();
 
     while (CSSParserValue* val = m_valueList->current()) {
         RefPtrWillBeRawPtr<CSSValue> parsedValue = nullptr;
         if (val->unit() == CSSPrimitiveValue::UnitType::URI) {
@@ skipping 4536 matching lines @@
             break;
 
         // If there are more arguments, they should be after a comma.
         if (!consumeComma(functionArgs))
             return nullptr;
     }
 
     return imageSet.release();
 }
 
-PassRefPtrWillBeRawPtr<CSSValue> CSSPropertyParser::parseWillChange()
-{
-    RefPtrWillBeRawPtr<CSSValueList> values = CSSValueList::createCommaSeparated();
-    if (m_valueList->current()->id == CSSValueAuto) {
-        // FIXME: This will be read back as an empty string instead of auto
-        return values.release();
-    }
-
-    // Every comma-separated list of identifiers is a valid will-change value,
-    // unless the list includes an explicitly disallowed identifier.
-    while (true) {
-        CSSParserValue* currentValue = m_valueList->current();
-        if (!currentValue || currentValue->m_unit != CSSParserValue::Identifier)
-            return nullptr;
-
-        CSSPropertyID unresolvedProperty = unresolvedCSSPropertyID(currentValue->string);
-        if (unresolvedProperty) {
-            ASSERT(CSSPropertyMetadata::isEnabledProperty(unresolvedProperty));
-            // Now "all" is used by both CSSValue and CSSPropertyValue.
-            // Need to return nullptr when currentValue is CSSPropertyAll.
-            if (unresolvedProperty == CSSPropertyWillChange || unresolvedProperty == CSSPropertyAll)
-                return nullptr;
-            values->append(cssValuePool().createIdentifierValue(unresolvedProperty));
-        } else {
-            switch (currentValue->id) {
-            case CSSValueNone:
-            case CSSValueAll:
-            case CSSValueAuto:
-            case CSSValueDefault:
-            case CSSValueInitial:
-            case CSSValueInherit:
-                return nullptr;
-            case CSSValueContents:
-            case CSSValueScrollPosition:
-                values->append(cssValuePool().createIdentifierValue(currentValue->id));
-                break;
-            default:
-                break;
-            }
-        }
-
-        if (!m_valueList->next())
-            break;
-        if (!consumeComma(m_valueList))
-            return nullptr;
-    }
-
-    return values.release();
-}
-
 PassRefPtrWillBeRawPtr<CSSFunctionValue> CSSPropertyParser::parseBuiltinFilterArguments(CSSParserValueList* args, CSSValueID filterType)
 {
     RefPtrWillBeRawPtr<CSSFunctionValue> filterValue = CSSFunctionValue::create(filterType);
     ASSERT(args);
 
     switch (filterType) {
     case CSSValueGrayscale:
     case CSSValueSepia:
     case CSSValueSaturate:
     case CSSValueInvert:
@@ skipping 1162 matching lines @@
         }
     }
 
     if (!list->length())
         return nullptr;
 
     return list.release();
 }
 
 } // namespace blink