cssparser.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

                    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 CSSPropertyWebkitAnimationName:
    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] = { CSSPropertyWebkitMarginTopCollapse,
            CSSPropertyWebkitMarginBottomCollapse };
        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 CSSPropertyWebkitMarginTopCollapse:
    case CSSPropertyWebkitMarginBottomCollapse:
        if (id == CSSValueCollapse || id == CSSValueSeparate || id == CSSValueDiscard)
            valid_primitive = true;
        break;
    case CSSPropertyTextLineThroughMode:
    case CSSPropertyTextOverlineMode:
    case CSSPropertyTextUnderlineMode:
        if (id == CSSValueContinuous || id == CSSValueSkipWhiteSpace)
            valid_primitive = true;
        break;
    case CSSPropertyTextLineThroughStyle:
    case CSSPropertyTextOverlineStyle:
    case CSSPropertyTextUnderlineStyle:
        if (id == CSSValueNone || id == CSSValueSolid || id == CSSValueDouble ||
            id == CSSValueDashed || id == CSSValueDotDash || id == CSSValueDotDotDash ||
            id == CSSValueWave)
            valid_primitive = true;
        break;
    case CSSPropertyTextLineThroughWidth:
    case CSSPropertyTextOverlineWidth:
    case CSSPropertyTextUnderlineWidth:
        if (id == CSSValueAuto || id == CSSValueNormal || id == CSSValueThin ||
            id == CSSValueMedium || id == CSSValueThick)
            valid_primitive = true;
        else
            valid_primitive = !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)
            valid_primitive = true;
        break;
    case CSSPropertyWebkitColumnCount:
        if (id == CSSValueAuto)
            valid_primitive = true;
        else
            valid_primitive = !id && validUnit(value, FInteger | FNonNeg, false);
        break;
    case CSSPropertyWebkitColumnGap:         // normal | <length>
        if (id == CSSValueNormal)
            valid_primitive = true;
        else
            valid_primitive = validUnit(value, FLength | FNonNeg, m_strict);
        break;
    case CSSPropertyWebkitColumnWidth:         // auto | <length>
        if (id == CSSValueAuto)
            valid_primitive = true;
        else // Always parse this property in strict mode, since it would be ambiguous otherwise when used in the 'columns' shorthand property.
            valid_primitive = 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))
            valid_primitive = 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:
        valid_primitive = (!id && validUnit(value, FPercent, false));
        break;
    case CSSPropertyWebkitTextSizeAdjust:
        if (id == CSSValueAuto || id == CSSValueNone)
            valid_primitive = true;
        break;
    case CSSPropertyWebkitRtlOrdering:
        if (id == CSSValueLogical || id == CSSValueVisual)
            valid_primitive = true;
        break;
    
    case CSSPropertyWebkitFontSizeDelta:           // <length>
        valid_primitive = validUnit(value, FLength, m_strict);
        break;

    case CSSPropertyWebkitNbspMode:     // normal | space
        if (id == CSSValueNormal || id == CSSValueSpace)
            valid_primitive = true;
        break;

    case CSSPropertyWebkitLineBreak:   // normal | after-white-space
        if (id == CSSValueNormal || id == CSSValueAfterWhiteSpace)
            valid_primitive = true;
        break;

    case CSSPropertyWebkitMatchNearestMailBlockquoteColor:   // normal | match
        if (id == CSSValueNormal || id == CSSValueMatch)
            valid_primitive = true;
        break;

    case CSSPropertyWebkitHighlight:
        if (id == CSSValueNone || value->unit == CSSPrimitiveValue::CSS_STRING)
            valid_primitive = true;
        break;
    
    case CSSPropertyWebkitBorderFit:
        if (id == CSSValueBorder || id == CSSValueLines)
            valid_primitive = true;
        break;
        
    case CSSPropertyWebkitTextSecurity:
        // disc | circle | square | none | inherit
        if (id == CSSValueDisc || id == CSSValueCircle || id == CSSValueSquare|| id == CSSValueNone)
            valid_primitive = 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 CSSPropertyWebkitBackgroundSize to the shorthand.
        const int properties[] = { CSSPropertyBackgroundImage, CSSPropertyBackgroundRepeat, 
                                   CSSPropertyBackgroundAttachment, CSSPropertyBackgroundPosition, CSSPropertyWebkitBackgroundClip,
                                   CSSPropertyWebkitBackgroundOrigin, CSSPropertyBackgroundColor };
        return parseFillShorthand(propId, properties, 7, important);
    }
    case CSSPropertyWebkitMask: {
        const int properties[] = { CSSPropertyWebkitMaskImage, CSSPropertyWebkitMaskRepeat, 
                                   CSSPropertyWebkitMaskAttachment, CSSPropertyWebkitMaskPosition, CSSPropertyWebkitMaskClip,
                                   CSSPropertyWebkitMaskOrigin };
        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 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)
            valid_primitive = 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 CSSPropertyFontStretch:
    case CSSPropertyPage:
    case CSSPropertyTextLineThrough:
    case CSSPropertyTextOverline:
    case CSSPropertyTextUnderline:
        return false;
#if ENABLE(SVG)
    default:
        return parseSVGValue(propId, important);
#endif
    }

    if (valid_primitive) {
        if (id != 0)
            parsedValue = CSSPrimitiveValue::createIdentifier(id);
        else if (value->unit == CSSPrimitiveValue::CSS_STRING)
            parsedValue = CSSPrimitiveValue::create(value->string, (CSSPrimitiveValue::UnitTypes) value->unit);
        else if (value->unit >= CSSPrimitiveValue::CSS_NUMBER && value->unit <= CSSPrimitiveValue::CSS_KHZ)
            parsedValue = CSSPrimitiveValue::create(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;