Changeset 282234 in webkit


Ignore:
Timestamp:
Sep 9, 2021 12:12:38 PM (10 months ago)
Author:
Simon Fraser
Message:

right- and bottom-relative values in background-position-x/y don't work
​https://bugs.webkit.org/show_bug.cgi?id=202148

Reviewed by Antti Koivisto.

LayoutTests/imported/w3c:

More passing results.

  • web-platform-tests/css/css-backgrounds/parsing/background-position-x-computed-expected.txt:
  • web-platform-tests/css/css-backgrounds/parsing/background-position-x-valid-expected.txt:
  • web-platform-tests/css/css-backgrounds/parsing/background-position-y-computed-expected.txt:
  • web-platform-tests/css/css-backgrounds/parsing/background-position-y-valid-expected.txt:

Source/WebCore:

Test: fast/backgrounds/background-position-xy.html

background-position[1] and background-position-x/background-position-y allow authors
to specify edge-relative values, like "background-position-x: right 10px". We
failed to handle this syntax in background-position-x and background-position-y,
but we do handle it in background-position.

So fix consumePositionX()/consumePositionY(), which are used when parsing
background-position-x/y, -webkit-mask-position-x/y, perspective-origin-x/y, and
transform-origin-x.y, to handle this edge-relative form.

A failure on imported/w3c/web-platform-tests/css/css-backgrounds/parsing/background-position-x-computed.html
(which only passes in Firefox) suggets that we should convert "right 10px" to "calc(100% - 10px)"
but for now, this patch serializes with edge keywords, as we do for the shorthand.

[1] ​https://www.w3.org/TR/css-backgrounds-3/#background-position

Test: fast/backgrounds/background-position-xy.html

  • css/CSSComputedStyleDeclaration.cpp:

(WebCore::createSingleAxisPositionValueForLayer):
(WebCore::ComputedStyleExtractor::valueForPropertyInStyle):

  • css/parser/CSSPropertyParser.cpp:

(WebCore::consumePositionX):
(WebCore::consumePositionY):
(WebCore::consumePositionLonghand): Deleted.

  • css/parser/CSSPropertyParserHelpers.cpp:

(WebCore::CSSPropertyParserHelpers::consumePositionCoordinates):
(WebCore::CSSPropertyParserHelpers::consumeSingleAxisPosition):

  • css/parser/CSSPropertyParserHelpers.h:

LayoutTests:

Ref test for various background-position-* values. Adjust for serialization output changes.

  • fast/backgrounds/background-position-xy-expected.html: Added.
  • fast/backgrounds/background-position-xy.html: Added.
  • fast/css/background-position-serialize-expected.txt:
  • fast/css/background-position-serialize.html:
  • transitions/background-position-transitions-expected.txt:
  • transitions/background-position-transitions.html:
Location:
trunk
Files:
2 added
15 edited

Legend:

Unmodified
Added
Removed

  • trunk/LayoutTests/ChangeLog

    r282233 r282234  
     12021-09-09  Simon Fraser  <simon.fraser@apple.com>
     2
     3        right- and bottom-relative values in background-position-x/y don't work
     4        https://bugs.webkit.org/show_bug.cgi?id=202148
     5
     6        Reviewed by Antti Koivisto.
     7
     8        Ref test for various background-position-* values. Adjust for serialization output changes.
     9
     10        * fast/backgrounds/background-position-xy-expected.html: Added.
     11        * fast/backgrounds/background-position-xy.html: Added.
     12        * fast/css/background-position-serialize-expected.txt:
     13        * fast/css/background-position-serialize.html:
     14        * transitions/background-position-transitions-expected.txt:
     15        * transitions/background-position-transitions.html:
     16
    1172021-09-09  Eric Hutchison  <ehutchison@apple.com>
    218

  • trunk/LayoutTests/fast/css/background-position-serialize-expected.txt

    r275269 r282234  
    6666PASS: t.style.backgroundPosition should be and is.
    6767t.setAttribute('style', 'background-position-x: right 20px');
    68 PASS: window.getComputedStyle(t).backgroundPositionX should be 0% and is.
     68PASS: window.getComputedStyle(t).backgroundPositionX should be right 20px and is.
    6969t.setAttribute('style', 'background-position: right 20px bottom 10px');
    7070PASS: window.getComputedStyle(t).backgroundPosition should be right 20px bottom 10px and is.
    71 PASS: window.getComputedStyle(t).backgroundPositionX should be 20px and is.
     71PASS: window.getComputedStyle(t).backgroundPositionX should be right 20px and is.
    7272t.setAttribute('style', 'background: url(about:blank) 80% 80%;');
    7373t.style.backgroundPositionY = '50px'

  • trunk/LayoutTests/fast/css/background-position-serialize.html

    r275269 r282234  
    123123shouldBe("t.style.backgroundPosition", "");
    124124
    125 run("t.setAttribute('style', 'background-position-x: right 20px');"); // This does not parse, but perhaps it should.
    126 shouldBe("window.getComputedStyle(t).backgroundPositionX", "0%");
     125run("t.setAttribute('style', 'background-position-x: right 20px');");
     126shouldBe("window.getComputedStyle(t).backgroundPositionX", "right 20px");
    127127
    128128run("t.setAttribute('style', 'background-position: right 20px bottom 10px');");
    129129shouldBe("window.getComputedStyle(t).backgroundPosition", "right 20px bottom 10px");
    130 shouldBe("window.getComputedStyle(t).backgroundPositionX", "20px"); // This is a bug. webkit.org/b/154551
     130shouldBe("window.getComputedStyle(t).backgroundPositionX", "right 20px");
    131131
    132132run("t.setAttribute('style', 'background: url(about:blank) 80% 80%;');");

  • trunk/LayoutTests/imported/w3c/ChangeLog

    r282217 r282234  
     12021-09-09  Simon Fraser  <simon.fraser@apple.com>
     2
     3        right- and bottom-relative values in background-position-x/y don't work
     4        https://bugs.webkit.org/show_bug.cgi?id=202148
     5
     6        Reviewed by Antti Koivisto.
     7
     8        More passing results.
     9
     10        * web-platform-tests/css/css-backgrounds/parsing/background-position-x-computed-expected.txt:
     11        * web-platform-tests/css/css-backgrounds/parsing/background-position-x-valid-expected.txt:
     12        * web-platform-tests/css/css-backgrounds/parsing/background-position-y-computed-expected.txt:
     13        * web-platform-tests/css/css-backgrounds/parsing/background-position-y-valid-expected.txt:
     14
    1152021-09-09  Youenn Fablet  <youenn@apple.com>
    216

  • trunk/LayoutTests/imported/w3c/web-platform-tests/css/css-backgrounds/parsing/background-position-x-computed-expected.txt

    r267650 r282234  
    99PASS Property background-position-x value '0.5em'
    1010PASS Property background-position-x value 'calc(10px - 0.5em)'
    11 FAIL Property background-position-x value 'left -20%' assert_true: 'left -20%' is a supported value for background-position-x. expected true got false
    12 FAIL Property background-position-x value 'right -10px' assert_true: 'right -10px' is a supported value for background-position-x. expected true got false
     11PASS Property background-position-x value 'left -20%'
     12FAIL Property background-position-x value 'right -10px' assert_equals: expected "calc(100% + 10px)" but got "right -10px"
    1313PASS Property background-position-x value '-20%, 10px'
    1414PASS Property background-position-x value 'center, left, right'
    1515FAIL Property background-position-x value '0.5em, x-start, x-end' assert_true: '0.5em, x-start, x-end' is a supported value for background-position-x. expected true got false
    1616PASS Property background-position-x value 'calc(10px - 0.5em), -20%, 10px'
    17 FAIL Property background-position-x value 'calc(10px - 0.5em), left -20%, right 10px' assert_true: 'calc(10px - 0.5em), left -20%, right 10px' is a supported value for background-position-x. expected true got false
     17PASS Property background-position-x value 'calc(10px - 0.5em), left -20%, right 10px'
    1818

  • trunk/LayoutTests/imported/w3c/web-platform-tests/css/css-backgrounds/parsing/background-position-x-valid-expected.txt

    r267650 r282234  
    11
    2 FAIL e.style['background-position-x'] = "center" should set the property value assert_equals: serialization should be canonical expected "center" but got "50%"
    3 FAIL e.style['background-position-x'] = "left" should set the property value assert_equals: serialization should be canonical expected "left" but got "0%"
    4 FAIL e.style['background-position-x'] = "right" should set the property value assert_equals: serialization should be canonical expected "right" but got "100%"
     2PASS e.style['background-position-x'] = "center" should set the property value
     3PASS e.style['background-position-x'] = "left" should set the property value
     4PASS e.style['background-position-x'] = "right" should set the property value
    55FAIL e.style['background-position-x'] = "x-start" should set the property value assert_not_equals: property should be set got disallowed value ""
    66FAIL e.style['background-position-x'] = "x-end" should set the property value assert_not_equals: property should be set got disallowed value ""
    … …  
    99PASS e.style['background-position-x'] = "0.5em" should set the property value
    1010PASS e.style['background-position-x'] = "calc(10px - 0.5em)" should set the property value
    11 FAIL e.style['background-position-x'] = "left -20%" should set the property value assert_not_equals: property should be set got disallowed value ""
    12 FAIL e.style['background-position-x'] = "right 10px" should set the property value assert_not_equals: property should be set got disallowed value ""
     11PASS e.style['background-position-x'] = "left -20%" should set the property value
     12PASS e.style['background-position-x'] = "right 10px" should set the property value
    1313PASS e.style['background-position-x'] = "-20%, 10px" should set the property value
    14 FAIL e.style['background-position-x'] = "center, left, right" should set the property value assert_equals: serialization should be canonical expected "center, left, right" but got "50%, 0%, 100%"
     14PASS e.style['background-position-x'] = "center, left, right" should set the property value
    1515FAIL e.style['background-position-x'] = "0.5em, x-start, x-end" should set the property value assert_not_equals: property should be set got disallowed value ""
    16 FAIL e.style['background-position-x'] = "calc(10px - 0.5em), left -20%, right 10px" should set the property value assert_not_equals: property should be set got disallowed value ""
     16PASS e.style['background-position-x'] = "calc(10px - 0.5em), left -20%, right 10px" should set the property value
    1717

  • trunk/LayoutTests/imported/w3c/web-platform-tests/css/css-backgrounds/parsing/background-position-y-computed-expected.txt

    r267650 r282234  
    99PASS Property background-position-y value '0.5em'
    1010PASS Property background-position-y value 'calc(10px - 0.5em)'
    11 FAIL Property background-position-y value 'top -20%' assert_true: 'top -20%' is a supported value for background-position-y. expected true got false
    12 FAIL Property background-position-y value 'bottom -10px' assert_true: 'bottom -10px' is a supported value for background-position-y. expected true got false
     11PASS Property background-position-y value 'top -20%'
     12FAIL Property background-position-y value 'bottom -10px' assert_equals: expected "calc(100% + 10px)" but got "bottom -10px"
    1313PASS Property background-position-y value '-20%, 10px'
    1414PASS Property background-position-y value 'center, top, bottom'
    1515FAIL Property background-position-y value '0.5em, y-start, y-end' assert_true: '0.5em, y-start, y-end' is a supported value for background-position-y. expected true got false
    1616PASS Property background-position-y value 'calc(10px - 0.5em), -20%, 10px'
    17 FAIL Property background-position-y value 'calc(10px - 0.5em), top -20%, bottom 10px' assert_true: 'calc(10px - 0.5em), top -20%, bottom 10px' is a supported value for background-position-y. expected true got false
     17PASS Property background-position-y value 'calc(10px - 0.5em), top -20%, bottom 10px'
    1818

  • trunk/LayoutTests/imported/w3c/web-platform-tests/css/css-backgrounds/parsing/background-position-y-valid-expected.txt

    r267650 r282234  
    11
    2 FAIL e.style['background-position-y'] = "center" should set the property value assert_equals: serialization should be canonical expected "center" but got "50%"
    3 FAIL e.style['background-position-y'] = "top" should set the property value assert_equals: serialization should be canonical expected "top" but got "0%"
    4 FAIL e.style['background-position-y'] = "bottom" should set the property value assert_equals: serialization should be canonical expected "bottom" but got "100%"
     2PASS e.style['background-position-y'] = "center" should set the property value
     3PASS e.style['background-position-y'] = "top" should set the property value
     4PASS e.style['background-position-y'] = "bottom" should set the property value
    55FAIL e.style['background-position-y'] = "y-start" should set the property value assert_not_equals: property should be set got disallowed value ""
    66FAIL e.style['background-position-y'] = "y-end" should set the property value assert_not_equals: property should be set got disallowed value ""
    … …  
    99PASS e.style['background-position-y'] = "0.5em" should set the property value
    1010PASS e.style['background-position-y'] = "calc(10px - 0.5em)" should set the property value
    11 FAIL e.style['background-position-y'] = "top -20%" should set the property value assert_not_equals: property should be set got disallowed value ""
    12 FAIL e.style['background-position-y'] = "bottom 10px" should set the property value assert_not_equals: property should be set got disallowed value ""
     11PASS e.style['background-position-y'] = "top -20%" should set the property value
     12PASS e.style['background-position-y'] = "bottom 10px" should set the property value
    1313PASS e.style['background-position-y'] = "-20%, 10px" should set the property value
    14 FAIL e.style['background-position-y'] = "center, top, bottom" should set the property value assert_equals: serialization should be canonical expected "center, top, bottom" but got "50%, 0%, 100%"
     14PASS e.style['background-position-y'] = "center, top, bottom" should set the property value
    1515FAIL e.style['background-position-y'] = "0.5em, y-start, y-end" should set the property value assert_not_equals: property should be set got disallowed value ""
    16 FAIL e.style['background-position-y'] = "calc(10px - 0.5em), top -20%, bottom 10px" should set the property value assert_not_equals: property should be set got disallowed value ""
     16FAIL e.style['background-position-y'] = "calc(10px - 0.5em), top -20%, bottom 10px" should set the property value assert_equals: serialization should be canonical expected "calc(-0.5em + 10px), top -20%, top 10px" but got "calc(-0.5em + 10px), top -20%, bottom 10px"
    1717

  • trunk/LayoutTests/transitions/background-position-transitions-expected.txt

    r275869 r282234  
    11PASS - "background-position-x" property for "box1" element at 0.5s saw something close to: 45px
    22PASS - "background-position-y" property for "box1" element at 0.5s saw something close to: 60px
    3 PASS - "background-position-x" property for "box2" element at 0.5s saw something close to: 45px
    4 PASS - "background-position-y" property for "box2" element at 0.5s saw something close to: 60px
     3PASS - "background-position-x" property for "box2" element at 0.5s saw something close to: right 45px
     4PASS - "background-position-y" property for "box2" element at 0.5s saw something close to: bottom 60px
    55PASS - "background-position-x" property for "box3" element at 0.5s saw something close to: calc(50% - 35px)
    66PASS - "background-position-y" property for "box3" element at 0.5s saw something close to: calc(50% - 40px)

  • trunk/LayoutTests/transitions/background-position-transitions.html

    r275869 r282234  
    4444        [0.5, 'box1', 'background-position-x', "45px"],
    4545        [0.5, 'box1', 'background-position-y', "60px"],
    46         [0.5, 'box2', 'background-position-x', "45px"],
    47         [0.5, 'box2', 'background-position-y', "60px"],
     46        [0.5, 'box2', 'background-position-x', "right 45px"],
     47        [0.5, 'box2', 'background-position-y', "bottom 60px"],
    4848        [0.5, 'box3', 'background-position-x', "calc(50% - 35px)"],
    4949        [0.5, 'box3', 'background-position-y', "calc(50% - 40px)"],

  • trunk/Source/WebCore/ChangeLog

    r282223 r282234  
     12021-09-09  Simon Fraser  <simon.fraser@apple.com>
     2
     3        right- and bottom-relative values in background-position-x/y don't work
     4        https://bugs.webkit.org/show_bug.cgi?id=202148
     5
     6        Reviewed by Antti Koivisto.
     7
     8        Test: fast/backgrounds/background-position-xy.html
     9
     10        background-position[1] and background-position-x/background-position-y allow authors
     11        to specify edge-relative values, like "background-position-x: right 10px". We
     12        failed to handle this syntax in background-position-x and background-position-y,
     13        but we do handle it in background-position.
     14
     15        So fix consumePositionX()/consumePositionY(), which are used when parsing
     16        background-position-x/y, -webkit-mask-position-x/y, perspective-origin-x/y, and
     17        transform-origin-x.y, to handle this edge-relative form.
     18
     19        A failure on imported/w3c/web-platform-tests/css/css-backgrounds/parsing/background-position-x-computed.html
     20        (which only passes in Firefox) suggets that we should convert "right 10px" to "calc(100% - 10px)"
     21        but for now, this patch serializes with edge keywords, as we do for the shorthand.
     22
     23        [1] https://www.w3.org/TR/css-backgrounds-3/#background-position
     24
     25        Test: fast/backgrounds/background-position-xy.html
     26
     27        * css/CSSComputedStyleDeclaration.cpp:
     28        (WebCore::createSingleAxisPositionValueForLayer):
     29        (WebCore::ComputedStyleExtractor::valueForPropertyInStyle):
     30        * css/parser/CSSPropertyParser.cpp:
     31        (WebCore::consumePositionX):
     32        (WebCore::consumePositionY):
     33        (WebCore::consumePositionLonghand): Deleted.
     34        * css/parser/CSSPropertyParserHelpers.cpp:
     35        (WebCore::CSSPropertyParserHelpers::consumePositionCoordinates):
     36        (WebCore::CSSPropertyParserHelpers::consumeSingleAxisPosition):
     37        * css/parser/CSSPropertyParserHelpers.h:
     38
    1392021-09-09  Antti Koivisto  <antti@apple.com>
    240

  • trunk/Source/WebCore/css/CSSComputedStyleDeclaration.cpp

    r282143 r282234  
    298298        list->append(CSSValuePool::singleton().createValue(layer.backgroundYOrigin()));
    299299    }
     300    list->append(zoomAdjustedPixelValueForLength(layer.yPosition(), style));
     301    return list;
     302}
     303
     304static Ref<CSSValue> createSingleAxisPositionValueForLayer(CSSPropertyID propertyID, const FillLayer& layer, const RenderStyle& style)
     305{
     306    if (propertyID == CSSPropertyBackgroundPositionX || propertyID == CSSPropertyWebkitMaskPositionX) {
     307        if (!layer.isBackgroundXOriginSet() || layer.backgroundXOrigin() == Edge::Left)
     308            return zoomAdjustedPixelValueForLength(layer.xPosition(), style);
     309
     310        auto list = CSSValueList::createSpaceSeparated();
     311        list->append(CSSValuePool::singleton().createValue(layer.backgroundXOrigin()));
     312        list->append(zoomAdjustedPixelValueForLength(layer.xPosition(), style));
     313        return list;
     314    }
     315
     316    if (!layer.isBackgroundYOriginSet() || layer.backgroundYOrigin() == Edge::Top)
     317        return zoomAdjustedPixelValueForLength(layer.yPosition(), style);
     318
     319    auto list = CSSValueList::createSpaceSeparated();
     320    list->append(CSSValuePool::singleton().createValue(layer.backgroundYOrigin()));
    300321    list->append(zoomAdjustedPixelValueForLength(layer.yPosition(), style));
    301322    return list;
    … …  
    27002721            auto& layers = propertyID == CSSPropertyWebkitMaskPositionX ? style.maskLayers() : style.backgroundLayers();
    27012722            if (!layers.next())
    2702                 return cssValuePool.createValue(layers.xPosition(), style);
     2723                return createSingleAxisPositionValueForLayer(propertyID, layers, style);
    27032724
    27042725            auto list = CSSValueList::createCommaSeparated();
    27052726            for (auto* currLayer = &layers; currLayer; currLayer = currLayer->next())
    2706                 list->append(cssValuePool.createValue(currLayer->xPosition(), style));
     2727                list->append(createSingleAxisPositionValueForLayer(propertyID, *currLayer, style));
    27072728
    27082729            return list;
    … …  
    27122733            auto& layers = propertyID == CSSPropertyWebkitMaskPositionY ? style.maskLayers() : style.backgroundLayers();
    27132734            if (!layers.next())
    2714                 return cssValuePool.createValue(layers.yPosition(), style);
     2735                return createSingleAxisPositionValueForLayer(propertyID, layers, style);
    27152736
    27162737            auto list = CSSValueList::createCommaSeparated();
    27172738            for (auto* currLayer = &layers; currLayer; currLayer = currLayer->next())
    2718                 list->append(cssValuePool.createValue(currLayer->yPosition(), style));
     2739                list->append(createSingleAxisPositionValueForLayer(propertyID, *currLayer, style));
    27192740
    27202741            return list;

  • trunk/Source/WebCore/css/parser/CSSPropertyParser.cpp

    r282144 r282234  
    21332133}
    21342134
    2135 template <CSSValueID start, CSSValueID end>
    2136 static RefPtr<CSSPrimitiveValue> consumePositionLonghand(CSSParserTokenRange& range, CSSParserMode cssParserMode)
    2137 {
    2138     if (range.peek().type() == IdentToken) {
    2139         CSSValueID id = range.peek().id();
    2140         int percent;
    2141         if (id == start)
    2142             percent = 0;
    2143         else if (id == CSSValueCenter)
    2144             percent = 50;
    2145         else if (id == end)
    2146             percent = 100;
    2147         else
    2148             return nullptr;
    2149         range.consumeIncludingWhitespace();
    2150         return CSSPrimitiveValue::create(percent, CSSUnitType::CSS_PERCENTAGE);
    2151     }
    2152     return consumeLengthOrPercent(range, cssParserMode, ValueRange::All);
    2153 }
    2154 
    21552135static RefPtr<CSSPrimitiveValue> consumePositionX(CSSParserTokenRange& range, CSSParserMode cssParserMode)
    21562136{
    2157     return consumePositionLonghand<CSSValueLeft, CSSValueRight>(range, cssParserMode);
     2137    return consumeSingleAxisPosition(range, cssParserMode, BoxOrient::Horizontal);
    21582138}
    21592139
    21602140static RefPtr<CSSPrimitiveValue> consumePositionY(CSSParserTokenRange& range, CSSParserMode cssParserMode)
    21612141{
    2162     return consumePositionLonghand<CSSValueTop, CSSValueBottom>(range, cssParserMode);
     2142    return consumeSingleAxisPosition(range, cssParserMode, BoxOrient::Vertical);
    21632143}
    21642144

  • trunk/Source/WebCore/css/parser/CSSPropertyParserHelpers.cpp

    r282144 r282234  
    4747#include "ColorLuminance.h"
    4848#include "Pair.h"
     49#include "RenderStyleConstants.h"
    4950#include "RuntimeEnabledFeatures.h"
    5051#include "StyleColor.h"
    … …  
    27692770    if (positionSyntax != PositionSyntax::BackgroundPosition)
    27702771        return std::nullopt;
    2771    
     2772
    27722773    return backgroundPositionFromThreeValues(values);
    27732774}
    … …  
    27892790        return positionFromOneValue(*value1);
    27902791    return positionFromTwoValues(*value1, *value2);
     2792}
     2793
     2794RefPtr<CSSPrimitiveValue> consumeSingleAxisPosition(CSSParserTokenRange& range, CSSParserMode parserMode, BoxOrient orientation)
     2795{
     2796    RefPtr<CSSPrimitiveValue> value1;
     2797
     2798    if (range.peek().type() == IdentToken) {
     2799        switch (orientation) {
     2800        case BoxOrient::Horizontal:
     2801            value1 = consumeIdent<CSSValueLeft, CSSValueRight, CSSValueCenter>(range);
     2802            break;
     2803        case BoxOrient::Vertical:
     2804            value1 = consumeIdent<CSSValueTop, CSSValueBottom, CSSValueCenter>(range);
     2805            break;
     2806        }
     2807        if (!value1)
     2808            return nullptr;
     2809
     2810        if (value1->valueID() == CSSValueCenter)
     2811            return value1;
     2812    }
     2813
     2814    auto value2 = consumeLengthOrPercent(range, parserMode, ValueRange::All, UnitlessQuirk::Forbid);
     2815    if (value1 && value2)
     2816        return CSSPropertyParserHelpersInternal::createPrimitiveValuePair(WTFMove(value1), WTFMove(value2));
     2817
     2818    return value1 ? value1 : value2;
    27912819}
    27922820

  • trunk/Source/WebCore/css/parser/CSSPropertyParserHelpers.h

    r282144 r282234  
    4747}
    4848
     49enum class BoxOrient : uint8_t;
     50
    4951// When these functions are successful, they will consume all the relevant
    5052// tokens from the range and also consume any whitespace which follows. When
    … …  
    127129
    128130RefPtr<CSSPrimitiveValue> consumePosition(CSSParserTokenRange&, CSSParserMode, UnitlessQuirk, PositionSyntax);
     131RefPtr<CSSPrimitiveValue> consumeSingleAxisPosition(CSSParserTokenRange&, CSSParserMode, BoxOrient);
    129132std::optional<PositionCoordinates> consumePositionCoordinates(CSSParserTokenRange&, CSSParserMode, UnitlessQuirk, PositionSyntax);
    130133std::optional<PositionCoordinates> consumeOneOrTwoValuedPositionCoordinates(CSSParserTokenRange&, CSSParserMode, UnitlessQuirk);
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