[leading-trim] Add support for parsing "text-edge" CSS property

https://bugs.webkit.org/show_bug.cgi?id=248448

Reviewed by Antti Koivisto.

This patch add support for parsing "text-edge" (https://www.w3.org/TR/css-inline-3/#text-edges). This property is behind the "CSS leading-trim" run-time flag which is off by default.
(will WPTify the test cases soon after the expected behavior is confirmed -not so much about parsing, but more about how they interact with leading-trim.)

* Source/WebCore/WebCore.xcodeproj/project.pbxproj:
* Source/WebCore/css/CSSPrimitiveValueMappings.h:
(WebCore::CSSPrimitiveValue::CSSPrimitiveValue):
(WebCore::CSSPrimitiveValue::operator TextEdge const):
* Source/WebCore/css/CSSProperties.json:
* Source/WebCore/css/CSSValueKeywords.in:
* Source/WebCore/css/ComputedStyleExtractor.cpp:
(WebCore::valueForTextEdge):
(WebCore::ComputedStyleExtractor::valueForPropertyInStyle):
* Source/WebCore/css/parser/CSSPropertyParserHelpers.cpp:
(WebCore::CSSPropertyParserHelpers::consumeTextEdge):
* Source/WebCore/css/parser/CSSPropertyParserHelpers.h:
* Source/WebCore/rendering/style/RenderStyle.cpp:
(WebCore::RenderStyle::textEdge const):
(WebCore::RenderStyle::setTextEdge):
(WebCore::RenderStyle::initialTextEdge):
* Source/WebCore/rendering/style/RenderStyle.h:
* Source/WebCore/rendering/style/RenderStyleConstants.cpp:
(WebCore::operator<<):
* Source/WebCore/rendering/style/RenderStyleConstants.h:
* Source/WebCore/rendering/style/StyleRareInheritedData.cpp:
(WebCore::StyleRareInheritedData::StyleRareInheritedData):
(WebCore::StyleRareInheritedData::operator== const):
* Source/WebCore/rendering/style/StyleRareInheritedData.h:
* Source/WebCore/rendering/style/StyleTextEdge.h: Added.
(WebCore::operator==):
(WebCore::operator!=):
* Source/WebCore/style/StyleBuilderConverter.h:
(WebCore::Style::BuilderConverter::convertTextEdge):

Canonical link: https://commits.webkit.org/257233@main

LayoutTests/fast/text/text-edge-property-parsing-expected.txt

@@ -0,0 +1,51 @@
+Test parsing of the CSS text-edge property.
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS test("text-edge: leading") is "leading"
+PASS test("text-edge: text") is "text"
+PASS test("text-edge: cap") is "cap"
+PASS test("text-edge: ex") is "ex"
+PASS test("text-edge: ideographic") is "ideographic"
+PASS test("text-edge: ideographic-ink") is "ideographic-ink"
+PASS test("text-edge: alphabetic") is ""
+PASS test("text-edge: text text") is "text text"
+PASS test("text-edge: text alphabetic") is "text alphabetic"
+PASS test("text-edge: text ideographic") is "text ideographic"
+PASS test("text-edge: text ideographic-ink") is "text ideographic-ink"
+PASS test("text-edge: cap text") is "cap text"
+PASS test("text-edge: cap alphabetic") is "cap alphabetic"
+PASS test("text-edge: cap ideographic") is "cap ideographic"
+PASS test("text-edge: cap ideographic-ink") is "cap ideographic-ink"
+PASS test("text-edge: ex text") is "ex text"
+PASS test("text-edge: ex alphabetic") is "ex alphabetic"
+PASS test("text-edge: ex ideographic") is "ex ideographic"
+PASS test("text-edge: ex ideographic-ink") is "ex ideographic-ink"
+PASS test("text-edge: ideographic text") is "ideographic text"
+PASS test("text-edge: ideographic alphabetic") is "ideographic alphabetic"
+PASS test("text-edge: ideographic ideographic") is "ideographic ideographic"
+PASS test("text-edge: ideographic ideographic-ink") is "ideographic ideographic-ink"
+PASS test("text-edge: ideographic-ink text") is "ideographic-ink text"
+PASS test("text-edge: ideographic-ink alphabetic") is "ideographic-ink alphabetic"
+PASS test("text-edge: ideographic-ink ideographic") is "ideographic-ink ideographic"
+PASS test("text-edge: ideographic-ink ideographic-ink") is "ideographic-ink ideographic-ink"
+PASS test("text-edge: leading leading") is ""
+PASS test("text-edge: leading text") is ""
+PASS test("text-edge: leading cap") is ""
+PASS test("text-edge: leading ex") is ""
+PASS test("text-edge: leading ideographic") is ""
+PASS test("text-edge: leading ideographic-ink") is ""
+PASS test("text-edge: text leading") is ""
+PASS test("text-edge: cap leading") is ""
+PASS test("text-edge: ex leading") is ""
+PASS test("text-edge: ideographic leading") is ""
+PASS test("text-edge: ideographic-ink leading") is ""
+PASS test("text-edge: text cap") is ""
+PASS test("text-edge: text ex") is ""
+PASS test("text-edge: alphabetic") is ""
+PASS test("text-edge: alphabetic text") is ""
+PASS successfullyParsed is true
+
+TEST COMPLETE
+

LayoutTests/fast/text/text-edge-property-parsing.html

@@ -0,0 +1,71 @@
+<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
+<html>
+<head>
+<script src="../../resources/js-test-pre.js"></script>
+</head>
+<body>
+<script>
+description('Test parsing of the CSS text-edge property.');
+
+function test(declaration) {
+    var div = document.createElement("div");
+    div.setAttribute("style", declaration);
+    return div.style.textEdge;
+}
+
+shouldBeEqualToString('test("text-edge: leading")', "leading");
+
+shouldBeEqualToString('test("text-edge: text")', "text");
+shouldBeEqualToString('test("text-edge: cap")', "cap");
+shouldBeEqualToString('test("text-edge: ex")', "ex");
+shouldBeEqualToString('test("text-edge: ideographic")', "ideographic");
+shouldBeEqualToString('test("text-edge: ideographic-ink")', "ideographic-ink");
+shouldBeEqualToString('test("text-edge: alphabetic")', "");
+
+shouldBeEqualToString('test("text-edge: text text")', "text text");
+shouldBeEqualToString('test("text-edge: text alphabetic")', "text alphabetic");
+shouldBeEqualToString('test("text-edge: text ideographic")', "text ideographic");
+shouldBeEqualToString('test("text-edge: text ideographic-ink")', "text ideographic-ink");
+
+shouldBeEqualToString('test("text-edge: cap text")', "cap text");
+shouldBeEqualToString('test("text-edge: cap alphabetic")', "cap alphabetic");
+shouldBeEqualToString('test("text-edge: cap ideographic")', "cap ideographic");
+shouldBeEqualToString('test("text-edge: cap ideographic-ink")', "cap ideographic-ink");
+
+shouldBeEqualToString('test("text-edge: ex text")', "ex text");
+shouldBeEqualToString('test("text-edge: ex alphabetic")', "ex alphabetic");
+shouldBeEqualToString('test("text-edge: ex ideographic")', "ex ideographic");
+shouldBeEqualToString('test("text-edge: ex ideographic-ink")', "ex ideographic-ink");
+
+shouldBeEqualToString('test("text-edge: ideographic text")', "ideographic text");
+shouldBeEqualToString('test("text-edge: ideographic alphabetic")', "ideographic alphabetic");
+shouldBeEqualToString('test("text-edge: ideographic ideographic")', "ideographic ideographic");
+shouldBeEqualToString('test("text-edge: ideographic ideographic-ink")', "ideographic ideographic-ink");
+
+shouldBeEqualToString('test("text-edge: ideographic-ink text")', "ideographic-ink text");
+shouldBeEqualToString('test("text-edge: ideographic-ink alphabetic")', "ideographic-ink alphabetic");
+shouldBeEqualToString('test("text-edge: ideographic-ink ideographic")', "ideographic-ink ideographic");
+shouldBeEqualToString('test("text-edge: ideographic-ink ideographic-ink")', "ideographic-ink ideographic-ink");
+
+shouldBeEqualToString('test("text-edge: leading leading")', "");
+shouldBeEqualToString('test("text-edge: leading text")', "");
+shouldBeEqualToString('test("text-edge: leading cap")', "");
+shouldBeEqualToString('test("text-edge: leading ex")', "");
+shouldBeEqualToString('test("text-edge: leading ideographic")', "");
+shouldBeEqualToString('test("text-edge: leading ideographic-ink")', "");
+
+shouldBeEqualToString('test("text-edge: text leading")', "");
+shouldBeEqualToString('test("text-edge: cap leading")', "");
+shouldBeEqualToString('test("text-edge: ex leading")', "");
+shouldBeEqualToString('test("text-edge: ideographic leading")', "");
+shouldBeEqualToString('test("text-edge: ideographic-ink leading")', "");
+
+shouldBeEqualToString('test("text-edge: text cap")', "");
+shouldBeEqualToString('test("text-edge: text ex")', "");
+shouldBeEqualToString('test("text-edge: alphabetic")', "");
+shouldBeEqualToString('test("text-edge: alphabetic text")', "");
+
+</script>
+<script src="../../resources/js-test-post.js"></script>
+</body>
+</html>

LayoutTests/imported/w3c/web-platform-tests/css/css-cascade/all-prop-initial-xml-expected.txt

@@ -303,6 +303,7 @@ PASS text-decoration-line
 PASS text-decoration-skip-ink
 PASS text-decoration-style
 PASS text-decoration-thickness
+PASS text-edge
 PASS text-emphasis-color
 PASS text-emphasis-position
 PASS text-emphasis-style

LayoutTests/imported/w3c/web-platform-tests/css/cssom/cssom-getPropertyValue-common-checks-expected.txt

@@ -1,6 +1,6 @@
 
 FAIL All properties can serialize 'initial' assert_array_equals: lengths differ, expected array [] length 0, got [["grid", ""], ["grid-area", "initial / initial / initial / initial"], ["grid-column", "initial / initial"], ["grid-row", "initial / initial"], ["offset", ""]] length 5
-FAIL All properties (except 'all') can serialize their initial value (computed) assert_array_equals: lengths differ, expected array [] length 0, got [["-webkit-line-clamp", "none"], ["-webkit-mask", ""], ["-webkit-perspective-origin-x", ""], ["-webkit-perspective-origin-y", ""], ["-webkit-text-stroke", ""], ["-webkit-transform-origin-x", ""], ["-webkit-transform-origin-y", ""], ["-webkit-transform-origin-z", ""], ["grid", "none / none / none / row / auto / auto"], ["grid-template", "none / none / none"], ["marker", ""], ["orphans", "auto"], ["page", ""], ["perspective-origin-x", ""], ["perspective-origin-y", ""], ["size", ""], ["transform-origin-x", ""], ["transform-origin-y", ""], ["transform-origin-z", ""], ["widows", "auto"]] length 20
+FAIL All properties (except 'all') can serialize their initial value (computed) assert_array_equals: lengths differ, expected array [] length 0, got [["-webkit-line-clamp", "none"], ["-webkit-mask", ""], ["-webkit-perspective-origin-x", ""], ["-webkit-perspective-origin-y", ""], ["-webkit-text-stroke", ""], ["-webkit-transform-origin-x", ""], ["-webkit-transform-origin-y", ""], ["-webkit-transform-origin-z", ""], ["grid", "none / none / none / row / auto / auto"], ["grid-template", "none / none / none"], ["marker", ""], ["orphans", "auto"], ["page", ""], ["perspective-origin-x", ""], ["perspective-origin-y", ""], ["size", ""], ["text-edge", "leading leading"], ["transform-origin-x", ""], ["transform-origin-y", ""], ["transform-origin-z", ""], ["widows", "auto"]] length 21
 PASS All properties (except 'all') can serialize their initial value (specified)
 FAIL All shorthands can serialize their longhands set to 'initial' assert_array_equals: lengths differ, expected array [] length 0, got [["all", ""], ["grid", ""], ["grid-area", "initial / initial / initial / initial"], ["grid-column", "initial / initial"], ["grid-row", "initial / initial"], ["offset", ""]] length 6
 PASS All shorthands (except 'all') can serialize their longhands set to their initial value

LayoutTests/platform/ios-wk2/imported/w3c/web-platform-tests/css/css-cascade/all-prop-initial-xml-expected.txt

@@ -303,6 +303,7 @@ PASS text-decoration-line
 PASS text-decoration-skip-ink
 PASS text-decoration-style
 PASS text-decoration-thickness
+PASS text-edge
 PASS text-emphasis-color
 PASS text-emphasis-position
 PASS text-emphasis-style

Source/WebCore/Headers.cmake

@@ -2050,6 +2050,7 @@ set(WebCore_PRIVATE_FRAMEWORK_HEADERS
     rendering/style/StyleScrollSnapPoints.h
     rendering/style/StyleSelfAlignmentData.h
     rendering/style/StyleSurroundData.h
+    rendering/style/StyleTextEdge.h
     rendering/style/StyleTransformData.h
     rendering/style/StyleVisualData.h
     rendering/style/TextDecorationThickness.h

Source/WebCore/WebCore.xcodeproj/project.pbxproj

@@ -4888,6 +4888,7 @@
 		DD17C082286EC57400D60B58 /* build in Copy PDF.js */ = {isa = PBXBuildFile; fileRef = DD17C07C286EC51900D60B58 /* build */; };
 		DD17C083286EC57700D60B58 /* LICENSE in Copy PDF.js */ = {isa = PBXBuildFile; fileRef = DD17C080286EC51B00D60B58 /* LICENSE */; };
 		DD17C084286EC57A00D60B58 /* web in Copy PDF.js */ = {isa = PBXBuildFile; fileRef = DD17C07E286EC51A00D60B58 /* web */; };
+		DD1C779029354C77003BD79B /* StyleTextEdge.h in Headers */ = {isa = PBXBuildFile; fileRef = DD1C778F29354C75003BD79B /* StyleTextEdge.h */; settings = {ATTRIBUTES = (Private, ); }; };
 		DD763BB20992C2C900740B8E /* libxml2.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = DD763BB10992C2C900740B8E /* libxml2.dylib */; };
 		DD7CDF250A23CF9800069928 /* CSSUnknownRule.h in Headers */ = {isa = PBXBuildFile; fileRef = A80E6CCE0A1989CA007FB8C5 /* CSSUnknownRule.h */; settings = {ATTRIBUTES = (Private, ); }; };
 		DD8A30B4291DFC8F00AD537C /* BlockLayoutState.h in Headers */ = {isa = PBXBuildFile; fileRef = DD8A30B3291DFC8F00AD537C /* BlockLayoutState.h */; settings = {ATTRIBUTES = (Private, ); }; };
@@ -17142,6 +17143,7 @@
 		DD17C07C286EC51900D60B58 /* build */ = {isa = PBXFileReference; lastKnownFileType = folder; name = build; path = ../../ThirdParty/pdfjs/build; sourceTree = "<group>"; };
 		DD17C07E286EC51A00D60B58 /* web */ = {isa = PBXFileReference; lastKnownFileType = folder; name = web; path = ../../ThirdParty/pdfjs/web; sourceTree = "<group>"; };
 		DD17C080286EC51B00D60B58 /* LICENSE */ = {isa = PBXFileReference; lastKnownFileType = text; name = LICENSE; path = ../../ThirdParty/pdfjs/LICENSE; sourceTree = "<group>"; };
+		DD1C778F29354C75003BD79B /* StyleTextEdge.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = StyleTextEdge.h; sourceTree = "<group>"; };
 		DD763BB10992C2C900740B8E /* libxml2.dylib */ = {isa = PBXFileReference; lastKnownFileType = "compiled.mach-o.dylib"; name = libxml2.dylib; path = /usr/lib/libxml2.dylib; sourceTree = "<absolute>"; };
 		DD8A30B3291DFC8F00AD537C /* BlockLayoutState.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = BlockLayoutState.h; sourceTree = "<group>"; };
 		DDB04F37278E5527008D3678 /* libWTF.a */ = {isa = PBXFileReference; lastKnownFileType = archive.ar; path = libWTF.a; sourceTree = BUILT_PRODUCTS_DIR; };
@@ -30619,6 +30621,7 @@
 				9D63800F1AF16E160031A15C /* StyleSelfAlignmentData.h */,
 				BC5EB5E60E81BFEF00B25965 /* StyleSurroundData.cpp */,
 				BC5EB5E40E81BF6D00B25965 /* StyleSurroundData.h */,
+				DD1C778F29354C75003BD79B /* StyleTextEdge.h */,
 				BC5EB80D0E81F2CE00B25965 /* StyleTransformData.cpp */,
 				BC5EB80E0E81F2CE00B25965 /* StyleTransformData.h */,
 				BC5EB6970E81DA6300B25965 /* StyleVisualData.cpp */,
@@ -38831,6 +38834,7 @@
 				E4F9EEF3156DA00700D23E7E /* StyleSheetContents.h in Headers */,
 				A8EA800A0A19516E00A8EF5F /* StyleSheetList.h in Headers */,
 				BC5EB5E50E81BF6D00B25965 /* StyleSurroundData.h in Headers */,
+				DD1C779029354C77003BD79B /* StyleTextEdge.h in Headers */,
 				BC5EB8100E81F2CE00B25965 /* StyleTransformData.h in Headers */,
 				E4DEAA1817A93DC3000E0430 /* StyleTreeResolver.h in Headers */,
 				E42E76DC1C7AF77600E3614D /* StyleUpdate.h in Headers */,

Source/WebCore/css/CSSPrimitiveValueMappings.h

@@ -5227,6 +5227,59 @@ template<> inline CSSPrimitiveValue::operator ScrollSnapStop() const
     }
 }
 
+template<> inline CSSPrimitiveValue::CSSPrimitiveValue(TextEdgeType textEdgeType)
+    : CSSValue(PrimitiveClass)
+{
+    setPrimitiveUnitType(CSSUnitType::CSS_VALUE_ID);
+    switch (textEdgeType) {
+    case TextEdgeType::Leading:
+        m_value.valueID = CSSValueLeading;
+        break;
+    case TextEdgeType::Text:
+        m_value.valueID = CSSValueText;
+        break;
+    case TextEdgeType::CapHeight:
+        m_value.valueID = CSSValueCap;
+        break;
+    case TextEdgeType::ExHeight:
+        m_value.valueID = CSSValueEx;
+        break;
+    case TextEdgeType::Alphabetic:
+        m_value.valueID = CSSValueAlphabetic;
+        break;
+    case TextEdgeType::CJKIdeographic:
+        m_value.valueID = CSSValueIdeographic;
+        break;
+    case TextEdgeType::CJKIdeographicInk:
+        m_value.valueID = CSSValueIdeographicInk;
+        break;
+    }
+}
+
+template<> inline CSSPrimitiveValue::operator TextEdgeType() const
+{
+    ASSERT(isValueID());
+    switch (m_value.valueID) {
+    case CSSValueLeading:
+        return TextEdgeType::Leading;
+    case CSSValueText:
+        return TextEdgeType::Text;
+    case CSSValueCap:
+        return TextEdgeType::CapHeight;
+    case CSSValueEx:
+        return TextEdgeType::ExHeight;
+    case CSSValueAlphabetic:
+        return TextEdgeType::Alphabetic;
+    case CSSValueIdeographic:
+        return TextEdgeType::CJKIdeographic;
+    case CSSValueIdeographicInk:
+        return TextEdgeType::CJKIdeographicInk;
+    default:
+        ASSERT_NOT_REACHED();
+        return TextEdgeType::Leading;
+    }
+}
+
 #if ENABLE(APPLE_PAY)
 template<> inline CSSPrimitiveValue::CSSPrimitiveValue(ApplePayButtonStyle e)
     : CSSValue(PrimitiveClass)

Source/WebCore/css/CSSProperties.json

@@ -510,6 +510,17 @@
                 "url": "https://www.w3.org/TR/css-fonts-4/#font-stretch-prop"
             }
         },
+        "text-edge": {
+            "codegen-properties": {
+                "converter": "TextEdge",
+                "custom-parser": true,
+                "settings-flag": "cssLeadingTrimEnabled"
+            },
+            "specification": {
+                "category": "css-inline",
+                "url": "https://www.w3.org/TR/css-inline-3/#text-edges"
+            }
+        },
         "text-rendering": {
             "inherited": true,
             "values": [

Source/WebCore/css/CSSValueKeywords.in

@@ -1040,6 +1040,15 @@ no-punctuation
 antialiased
 subpixel-antialiased
 
+// text-edge
+leading
+// text
+cap
+ex
+// ideographic
+ideographic-ink
+// alphabetic
+
 // text-rendering
 //auto
 optimizeSpeed

Source/WebCore/css/ComputedStyleExtractor.cpp

@@ -1312,6 +1312,14 @@ static Ref<CSSValueList> valueForScrollSnapAlignment(const ScrollSnapAlign& alig
     return value;
 }
 
+static Ref<CSSValueList> valueForTextEdge(const TextEdge& textEdge)
+{
+    auto value = CSSValueList::createSpaceSeparated();
+    value->append(CSSPrimitiveValue::create(textEdge.over));
+    value->append(CSSPrimitiveValue::create(textEdge.under));
+    return value;
+}
+
 static Ref<CSSValue> willChangePropertyValue(const WillChangeData* willChangeData)
 {
     auto& cssValuePool = CSSValuePool::singleton();
@@ -4081,6 +4089,8 @@ RefPtr<CSSValue> ComputedStyleExtractor::valueForPropertyInStyle(const RenderSty
         return valueForScrollSnapType(style.scrollSnapType());
     case CSSPropertyOverflowAnchor:
         return cssValuePool.createValue(style.overflowAnchor());
+    case CSSPropertyTextEdge:
+        return valueForTextEdge(style.textEdge());
 
 #if ENABLE(APPLE_PAY)
     case CSSPropertyApplePayButtonStyle:

Source/WebCore/css/parser/CSSPropertyParserHelpers.cpp

@@ -6608,6 +6608,27 @@ RefPtr<CSSValue> consumeScrollSnapType(CSSParserTokenRange& range)
     return typeValue;
 }
 
+RefPtr<CSSValue> consumeTextEdge(CSSParserTokenRange& range)
+{
+    auto typeValue = CSSValueList::createSpaceSeparated();
+    if (range.peek().id() == CSSValueLeading) {
+        typeValue->append(consumeIdent(range).releaseNonNull());
+        return typeValue;
+    }
+
+    auto firstGroupValue = consumeIdent<CSSValueText, CSSValueCap, CSSValueEx, CSSValueIdeographic, CSSValueIdeographicInk>(range);
+    if (!firstGroupValue)
+        return nullptr;
+    typeValue->append(firstGroupValue.releaseNonNull());
+
+    auto secondGroupValue = consumeIdent<CSSValueText, CSSValueAlphabetic, CSSValueIdeographic, CSSValueIdeographicInk>(range);
+    if (secondGroupValue)
+        typeValue->append(secondGroupValue.releaseNonNull());
+
+    return typeValue;
+}
+
+
 RefPtr<CSSValue> consumeBorderRadiusCorner(CSSParserTokenRange& range, CSSParserMode cssParserMode)
 {
     RefPtr<CSSPrimitiveValue> parsedValue1 = consumeLengthOrPercent(range, cssParserMode, ValueRange::NonNegative);

Source/WebCore/css/parser/CSSPropertyParserHelpers.h

@@ -271,6 +271,7 @@ RefPtr<CSSValue> consumeContent(CSSParserTokenRange&, const CSSParserContext&);
 RefPtr<CSSValue> consumePerspective(CSSParserTokenRange&, CSSParserMode);
 RefPtr<CSSValue> consumeScrollSnapAlign(CSSParserTokenRange&);
 RefPtr<CSSValue> consumeScrollSnapType(CSSParserTokenRange&);
+RefPtr<CSSValue> consumeTextEdge(CSSParserTokenRange&);
 RefPtr<CSSValue> consumeBorderRadiusCorner(CSSParserTokenRange&, CSSParserMode);
 bool consumeRadii(RefPtr<CSSPrimitiveValue> horizontalRadii[4], RefPtr<CSSPrimitiveValue> verticalRadii[4], CSSParserTokenRange&, CSSParserMode, bool useLegacyParsing);
 enum class ConsumeRay { Include, Exclude };

Source/WebCore/rendering/style/RenderStyle.cpp

@@ -49,6 +49,7 @@
 #include "StyleResolver.h"
 #include "StyleScrollSnapPoints.h"
 #include "StyleSelfAlignmentData.h"
+#include "StyleTextEdge.h"
 #include "StyleTreeResolver.h"
 #include "WillChangeData.h"
 #include <wtf/MathExtras.h>
@@ -2805,6 +2806,21 @@ bool RenderStyle::hasSnapPosition() const
     return alignment.blockAlign != ScrollSnapAxisAlignType::None || alignment.inlineAlign != ScrollSnapAxisAlignType::None;
 }
 
+TextEdge RenderStyle::textEdge() const
+{
+    return m_rareInheritedData->textEdge;
+}
+
+void RenderStyle::setTextEdge(TextEdge textEdgeValue)
+{
+    SET_VAR(m_rareInheritedData, textEdge, textEdgeValue);
+}
+
+TextEdge RenderStyle::initialTextEdge()
+{
+    return { TextEdgeType::Leading, TextEdgeType::Leading };
+}
+
 bool RenderStyle::hasReferenceFilterOnly() const
 {
     if (!hasFilter())