Generate StyleRareNonInheritedData in ComputedStyleBase.

third_party/WebKit/Source/core/css/CSSProperties.json5

 {
 // This file specifies all the CSS properties we support and the necessary
 // information for our code generation. The various supported arguments
 // are described below with example usage
 
   parameters: {
     // - alias_for: "other-property"
     // Properties specifying alias_for should be virtually identical to the
     // properties they alias. Minor parsing differences are allowed as long as
     // the CSSValues created are of the same format of the aliased property.
@@ skipping 96 matching lines @@
     // example, if the type_name is 'Vector<String>', include_paths should be
     // ["platform/wtf/Vector.h", "platform/wtf/text/WTFString.h"]
     include_paths: {
       default: [],
     },
 
     // Name of the pointer type that wraps this field (e.g. RefPtr).
     // Can only be set if the field template is storage_only.
     wrapper_pointer_name: {
       valid_type: "str",
-      valid_values: ["RefPtr", "Persistent"],
+      // TODO(shend): Remove DataRef once we generate all of
+      // StyleRareNonInheritedData.
+      valid_values: ["RefPtr", "Persistent", "std::unique_ptr", "DataPersistent", "DataRef"],
     },
 
     // - keywords: ["keyword1", "keyword2"]
     // This specifies all valid keyword values for the property.
     // TODO(sashab): Once all properties are represented here, delete
     // CSSValueKeywords.in and use this list instead.
     keywords: {
       default: [],
     },
 
@@ skipping 456 matching lines @@
       default_value: "1.0",
       field_group: "visual",
     },
 
     {
       name: "align-content",
       api_methods: ["parseSingleValue"],
       api_class: "CSSPropertyAPIAlignOrJustifyContent",
       converter: "ConvertContentAlignmentData",
       initial: "InitialContentAlignment",
+      field_template: "storage_only",
+      type_name: "StyleContentAlignmentData",
+      field_group: "rare-non-inherited",
+      default_value: "StyleContentAlignmentData(kContentPositionNormal, kContentDistributionDefault, kOverflowAlignmentDefault)",
+      include_paths: ["core/style/StyleContentAlignmentData.h"],
     },
     {
       name: "align-items",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertSelfOrDefaultAlignmentData",
       initial: "InitialDefaultAlignment",
+      field_template: "storage_only",
+      type_name: "StyleSelfAlignmentData",
+      field_group: "rare-non-inherited",
+      default_value: "StyleSelfAlignmentData(RuntimeEnabledFeatures::CSSGridLayoutEnabled() ? kItemPositionNormal : kItemPositionStretch, kOverflowAlignmentDefault)",

[alancutter (OOO until 2018), 2017/06/13 03:49:29]

This is getting kind of crazy. We should seriously consider moving C++ code back
into C++ files.
This issue is not a blocker for this patch.

Maybe something like this might be possible?
template<CSSPropertyID Property, typename T>
T DefaultValue();

template<CSSPropertyAlignItems, StyleSelfAlignmentData>
StyleSelfAlignmentData DefaultValue()
{
  return RuntimeEnabledFeatures::CSSGridLayoutEnabled() ? kItemPositionNormal :
kItemPositionStretch, kOverflowAlignmentDefault;
}

[shend, 2017/06/13 20:54:43]

Sounds like a good idea. Another approach is to put the property in the function
name instead of templating (which is kind of what we have now). It allows
multiple properties to share the same default value function. I still like the
template solution better though.

+      include_paths: ["core/style/StyleSelfAlignmentData.h"],
     },
     {
       name: "alignment-baseline",
       svg: true,
     },
     {
       name: "align-self",
       api_class: "CSSPropertyAPIAlignOrJustifySelf",
       api_methods: ["parseSingleValue"],
       converter: "ConvertSelfOrDefaultAlignmentData",
       initial: "InitialSelfAlignment",
+      field_template: "storage_only",
+      type_name: "StyleSelfAlignmentData",
+      field_group: "rare-non-inherited",
+      default_value: "StyleSelfAlignmentData(kItemPositionAuto, kOverflowAlignmentDefault)",
+      include_paths: ["core/style/StyleSelfAlignmentData.h"],
     },
     {
       name: "backdrop-filter",
       api_class: "CSSPropertyAPIFilter",
       converter: "ConvertFilterOperations",
       interpolable: true,
       runtime_flag: "CSSBackdropFilter",
     },
     {
       name: "backface-visibility",
+      field_template: "storage_only",
+      type_name: "EBackfaceVisibility",
+      field_group: "rare-non-inherited",
+      default_value: "kBackfaceVisibilityVisible",
+      field_size: 1,
     },
     {
       name: "background-attachment",
       custom_all: true,
     },
     {
       name: "background-blend-mode",
       custom_all: true,
     },
     {
@@ skipping 279 matching lines @@
       field_template: "external",
       include_paths: ["platform/Length.h"],
       type_name: "Length",
       field_group: "surround",
       default_value: "Length()",
     },
     {
       name: "box-shadow",
       converter: "ConvertShadowList",
       interpolable: true,
+      field_template: "storage_only",
+      type_name: "ShadowList",
+      field_group: "rare-non-inherited",
+      default_value: "nullptr",
+      wrapper_pointer_name: "RefPtr",
     },
     {
       name: "box-sizing",
       field_template: "keyword",
       type_name: "EBoxSizing",
       default_value: "content-box",
       keywords: ["content-box", "border-box"],
       field_group: "box",
     },
     {
@@ skipping 69 matching lines @@
       type_name: "LengthBox",
       default_value: "LengthBox()",
       field_group: "visual",
     },
     {
       name: "clip-path",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertClipPath",
       interpolable: true,
+      field_template: "storage_only",
+      type_name: "ClipPathOperation",
+      field_group: "rare-non-inherited",
+      default_value: "nullptr",
+      wrapper_pointer_name: "RefPtr",
+      include_paths: ["core/style/ClipPathOperation.h"],
     },
     {
       name: "clip-rule",
       inherited: true,
       svg: true,
       type_name: "WindRule",
     },
     {
       name: "color-interpolation",
       inherited: true,
@@ skipping 13 matching lines @@
     {
       name: "column-fill",
       type_name: "ColumnFill",
     },
     {
       name: "contain",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertFlags<Containment>",
       runtime_flag: "CSSContainment",
+      name_for_methods: "Contain",
+      type_name: "Containment",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      field_size: 4,
+      default_value: "kContainsNone",
     },
     {
       name: "content",
       api_class: true,
       api_methods: ["parseSingleValue"],
       custom_all: true,
       separator: ",",
       typedom_types: ["Image"],
+      type_name: "ContentData",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      default_value: "nullptr",
+      wrapper_pointer_name: "Persistent",
+      include_paths: ["core/style/ContentData.h"],
     },
     {
       name: "counter-increment",
       api_class: true,
       api_methods: ["parseSingleValue"],
       custom_all: true,
     },
     {
       name: "counter-reset",
       api_class: true,
@@ skipping 250 matching lines @@
       name: "image-orientation",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertImageOrientation",
       inherited: true,
       name_for_methods: "RespectImageOrientation",
       runtime_flag: "ImageOrientation",
     },
     {
       name: "isolation",
+      type_name: "EIsolation",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      field_size: 1,
+      default_value: "kIsolationAuto",
     },
     {
       name: "justify-content",
       api_class: "CSSPropertyAPIAlignOrJustifyContent",
       api_methods: ["parseSingleValue"],
       converter: "ConvertContentAlignmentData",
       initial: "InitialContentAlignment",
+      field_template: "storage_only",
+      type_name: "StyleContentAlignmentData",
+      field_group: "rare-non-inherited",
+      default_value: "StyleContentAlignmentData(kContentPositionNormal, kContentDistributionDefault, kOverflowAlignmentDefault)",
+      include_paths: ["core/style/StyleContentAlignmentData.h"],
     },
     {
       name: "justify-items",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertSelfOrDefaultAlignmentData",
       initial: "InitialSelfAlignment",
       runtime_flag: "CSSGridLayout",
+      field_template: "storage_only",
+      type_name: "StyleSelfAlignmentData",
+      field_group: "rare-non-inherited",
+      default_value: "StyleSelfAlignmentData(kItemPositionAuto, kOverflowAlignmentDefault)",
+      include_paths: ["core/style/StyleSelfAlignmentData.h"],
     },
     {
       name: "justify-self",
       api_class: "CSSPropertyAPIAlignOrJustifySelf",
       api_methods: ["parseSingleValue"],
       converter: "ConvertSelfOrDefaultAlignmentData",
       initial: "InitialSelfAlignment",
       runtime_flag: "CSSGridLayout",
+      field_template: "storage_only",
+      type_name: "StyleSelfAlignmentData",
+      field_group: "rare-non-inherited",
+      default_value: "StyleSelfAlignmentData(kItemPositionAuto, kOverflowAlignmentDefault)",
+      include_paths: ["core/style/StyleSelfAlignmentData.h"],
     },
     {
       name: "left",
       api_class: "CSSPropertyAPIMargin",
       api_methods: ["parseSingleValue"],
       converter: "ConvertLengthOrAuto",
       interpolable: true,
       typedom_types: ["Length", "Percent"],
       keywords: ["auto"],
       field_template: "external",
@@ skipping 211 matching lines @@
       default_value: "Length()",
     },
     {
       name: "mix-blend-mode",
       name_for_methods: "BlendMode",
       type_name: "blink::WebBlendMode",
     },
     {
       name: "object-fit",
       type_name: "ObjectFit",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      field_size: 3,
+      default_value: "kObjectFitFill",
     },
     {
       name: "object-position",
       converter: "ConvertPosition",
       interpolable: true,
+      field_template: "storage_only",
+      type_name: "LengthPoint",
+      field_group: "rare-non-inherited",
+      default_value: "LengthPoint(Length(50.0, kPercent), Length(50.0, kPercent))",
     },
     {
       name: "offset-anchor",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertPositionOrAuto",
       interpolable: true,
       runtime_flag: "CSSOffsetPositionAnchor",
     },
     {
@@ skipping 15 matching lines @@
       converter: "ConvertPositionOrAuto",
       interpolable: true,
       runtime_flag: "CSSOffsetPositionAnchor",
     },
     {
       name: "offset-rotate",
       api_class: "CSSPropertyAPIOffsetRotate",
       converter: "ConvertOffsetRotate",
       interpolable: true,
     },
+    // Whether or not we're transparent.
     {
       name: "opacity",
       api_class: "CSSPropertyAPIOpacity",
       api_methods: ["parseSingleValue"],
       interpolable: true,
+      field_template: "storage_only",
       type_name: "float",
+      field_group: "rare-non-inherited",
+      default_value: "1.0",
     },
     {
       name: "order",
       api_class: true,
       api_methods: ["parseSingleValue"],
       interpolable: true,
+      field_template: "storage_only",
       type_name: "int",
+      field_group: "rare-non-inherited",
+      default_value: "0",
     },
     {
       name: "orphans",
       api_class: "CSSPropertyAPIFragmentation",
       api_methods: ["parseSingleValue"],
       inherited: true,
       interpolable: true,
       type_name: "short",
       field_template: "primitive",
       default_value: "2",
@@ skipping 115 matching lines @@
       api_methods: ["parseSingleValue"],
       converter: "ConvertPaintOrder",
       inherited: true,
       svg: true,
     },
     {
       name: "perspective",
       api_class: "CSSPropertyAPIPerspective",
       converter: "ConvertPerspective",
       interpolable: true,
+      field_template: "storage_only",
+      type_name: "float",
+      field_group: "rare-non-inherited",
+      default_value: "0.0",
     },
     {
       name: "perspective-origin",
       converter: "ConvertPosition",
       interpolable: true,
+      field_template: "storage_only",
+      type_name: "LengthPoint",
+      field_group: "rare-non-inherited",
+      default_value: "LengthPoint(Length(50.0, kPercent), Length(50.0, kPercent))",
     },
     {
       name: "pointer-events",
       independent: true,
       inherited: true,
       default_value: "auto",
       field_template: "keyword",
       keywords: [
         "none", "auto", "stroke", "fill", "painted", "visible", "visibleStroke", "visibleFill", "visiblePainted", "bounding-box", "all",
       ],
@@ skipping 17 matching lines @@
       field_template: "storage_only",
       type_name: "QuotesData",
       include_paths: ["core/style/QuotesData.h"],
       default_value: "nullptr",
       wrapper_pointer_name: "RefPtr",
       field_group: "rare-inherited",
     },
     {
       name: "resize",
       custom_value: true,
+      type_name: "EResize",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      field_size: 2,
+      default_value: "RESIZE_NONE",
     },
     {
       name: "right",
       api_class: "CSSPropertyAPIMargin",
       api_methods: ["parseSingleValue"],
       converter: "ConvertLengthOrAuto",
       interpolable: true,
       typedom_types: ["Length", "Percent"],
       keywords: ["auto"],
       field_template: "external",
@@ skipping 22 matching lines @@
       api_class: "CSSPropertyAPIRadius",
       api_methods: ["parseSingleValue"],
       converter: "ConvertLengthOrAuto",
       interpolable: true,
       svg: true,
     },
     {
       name: "scroll-behavior",
       runtime_flag: "CSSOMSmoothScroll",
       type_name: "ScrollBehavior",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      field_size: 2,
+      default_value: "kScrollBehaviorAuto",
     },
     {
       name: "scroll-snap-type",
       runtime_flag: "CSSScrollSnapPoints",
       type_name: "ScrollSnapType",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      field_size: 2,
+      default_value: "kScrollSnapTypeNone",
     },
     {
       name: "scroll-snap-points-x",
       converter: "ConvertSnapPoints",
       runtime_flag: "CSSScrollSnapPoints",
     },
     {
       name: "scroll-snap-points-y",
       converter: "ConvertSnapPoints",
       runtime_flag: "CSSScrollSnapPoints",
     },
     {
       name: "scroll-snap-destination",
       converter: "ConvertPosition",
       runtime_flag: "CSSScrollSnapPoints",
     },
     {
       name: "scroll-snap-coordinate",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertSnapCoordinates",
       runtime_flag: "CSSScrollSnapPoints",
     },
     {
       name: "shape-image-threshold",
       api_class: true,
       api_methods: ["parseSingleValue"],
       interpolable: true,
+      field_template: "storage_only",
       type_name: "float",
+      field_group: "rare-non-inherited",
+      default_value: "0.0",
     },
     {
       name: "shape-margin",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertLength",
       interpolable: true,
+      field_template: "storage_only",
+      type_name: "Length",
+      field_group: "rare-non-inherited",
+      default_value: "Length(0, kFixed)",
     },
     {
       name: "shape-outside",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertShapeValue",
       interpolable: true,
       typedom_types: ["Image"],
+      field_template: "storage_only",
+      type_name: "ShapeValue",
+      field_group: "rare-non-inherited",
+      default_value: "nullptr",
+      wrapper_pointer_name: "Persistent",
+      include_paths: ["core/style/ShapeValue.h"],
     },
     {
       name: "shape-rendering",
       inherited: true,
       svg: true,
     },
     {
       name: "size",
       api_class: true,
       api_methods: ["parseSingleValue"],
@@ skipping 156 matching lines @@
       longhands: "text-decoration-line;text-decoration-style;text-decoration-color",
       use_handlers_for: "CSSPropertyTextDecorationLine",
     },
     {
       name: "text-decoration-color",
       api_class: true,
       api_methods: ["parseSingleValue"],
       custom_all: true,
       interpolable: true,
       runtime_flag: "CSS3TextDecorations",
+      field_template: "storage_only",
+      type_name: "StyleColor",
+      field_group: "rare-non-inherited",
+      default_value: "StyleColor::CurrentColor()",
     },
     {
       name: "text-decoration-line",
       api_class: "CSSPropertyAPITextDecorationLine",
       converter: "ConvertFlags<TextDecoration>",
       name_for_methods: "TextDecoration",
       runtime_flag: "CSS3TextDecorations",
       type_name: "TextDecoration",
     },
     {
       name: "text-decoration-skip",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertFlags<TextDecorationSkip>",
       inherited: true,
       runtime_flag: "CSS3TextDecorations",
       field_template: "storage_only",
       type_name: "TextDecorationSkip",
       default_value: "TextDecorationSkip::kObjects",
       field_size: 3,
       field_group: "rare-inherited",
     },
     {
       name: "text-decoration-style",
       runtime_flag: "CSS3TextDecorations",
       type_name: "TextDecorationStyle",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      default_value: "kTextDecorationStyleSolid",
+      field_size: 3,
     },
     {
       name: "text-indent",
       api_class: true,
       api_methods: ["parseSingleValue"],
       custom_all: true,
       inherited: true,
       interpolable: true,
       field_template: "external",
       type_name: "Length",
@@ skipping 10 matching lines @@
       type_name: "TextJustify",
       include_paths: ["platform/text/TextJustify.h"],
       type_name: "TextJustify",
       default_value: "kTextJustifyAuto",
       field_size: 2,
       field_group: "rare-inherited",
     },
     {
       name: "text-overflow",
       type_name: "TextOverflow",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      default_value: "kTextOverflowClip",
+      field_size: 1,
     },
     {
       name: "text-shadow",
       converter: "ConvertShadowList",
       inherited: true,
       interpolable: true,
       field_template: "storage_only",
       type_name: "ShadowList",
       include_paths: ["core/style/ShadowList.h"],
       wrapper_pointer_name: "RefPtr",
@@ skipping 47 matching lines @@
       type_name: "Length",
       field_group: "surround",
       default_value: "Length()",
     },
     {
       name: "touch-action",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertFlags<TouchAction>",
       type_name: "TouchAction",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      field_size: 6, // TODO(shend): Make this use "kTouchActionBits".
+      default_value: "TouchAction::kTouchActionAuto",
+      include_paths: ["platform/graphics/TouchAction.h"],
     },
     {
       name: "transform",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertTransformOperations",
       interpolable: true,
       keywords: ["none"],
       typedom_types: ["Transform"],
     },
     {
       name: "transform-box",
       field_template: "keyword",
       keywords: ["border-box", "fill-box", "view-box"],
       default_value: "border-box",
       runtime_flag: "CSSTransformBox",
     },
     {
       name: "transform-origin",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertTransformOrigin",
       getter: "GetTransformOrigin",
       interpolable: true,
     },
     {
       name: "transform-style",
       name_for_methods: "TransformStyle3D",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      default_value: "kTransformStyle3DFlat",
+      field_size: 1,
     },
     {
       name: "translate",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertTranslate",
       interpolable: true,
       runtime_flag: "CSSIndependentTransformProperties",
     },
     {
@@ skipping 53 matching lines @@
     {
       name: "y",
       api_class: "CSSPropertyAPIStrokeOrLength",
       converter: "ConvertLength",
       interpolable: true,
       svg: true,
     },
     {
       name: "-webkit-appearance",
       type_name: "ControlPart",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      default_value: "kNoControlPart",
+      field_size: 6,
     },
     {
       name: "-webkit-app-region",
       custom_all: true,
     },
     {
       name: "-webkit-background-clip",
       use_handlers_for: "CSSPropertyBackgroundClip",
     },
     {
@@ skipping 70 matching lines @@
     },
     {
       name: "-webkit-box-orient",
     },
     {
       name: "-webkit-box-pack",
     },
     {
       name: "-webkit-box-reflect",
       converter: "ConvertBoxReflect",
+      field_template: "storage_only",
+      type_name: "StyleReflection",
+      field_group: "rare-non-inherited",
+      default_value: "nullptr",
+      wrapper_pointer_name: "RefPtr",
+      include_paths: ["core/style/StyleReflection.h"],
     },
     {
       name: "column-count",
       api_class: true,
       api_methods: ["parseSingleValue"],
       custom_all: true,
       interpolable: true,
       type_name: "unsigned short",
     },
     {
@@ skipping 62 matching lines @@
     },
     {
       name: "-webkit-line-break",
       inherited: true,
       field_template: "keyword",
       type_name: "LineBreak",
       keywords: ["auto", "loose", "normal", "strict", "after-white-space"],
       default_value: "auto",
       field_group: "rare-inherited",
     },
+    // An Apple extension.
     {
       name: "-webkit-line-clamp",
       api_class: true,
       api_methods: ["parseSingleValue"],
       type_name: "LineClampValue",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      default_value: "LineClampValue()",
+      include_paths: ["core/style/LineClampValue.h"],
     },
     {
       name: "-webkit-margin-after-collapse",
       type_name: "EMarginCollapse",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      default_value: "kMarginCollapseCollapse",
+      field_size: 2,
     },
     {
       name: "-webkit-margin-before-collapse",
       type_name: "EMarginCollapse",
+      field_template: "storage_only",
+      field_group: "rare-non-inherited",
+      default_value: "kMarginCollapseCollapse",
+      field_size: 2,
     },
     {
       name: "-webkit-margin-bottom-collapse",
       name_for_methods: "MarginAfterCollapse",
       type_name: "EMarginCollapse",
     },
     {
       name: "-webkit-margin-top-collapse",
       name_for_methods: "MarginBeforeCollapse",
       type_name: "EMarginCollapse",
@@ skipping 213 matching lines @@
     },
     {
       name: "-webkit-transform-origin-z",
       api_class: true,
       api_methods: ["parseSingleValue"],
       converter: "ConvertComputedLength<float>",
       interpolable: true,
     },
     {
       name: "-webkit-user-drag",
+      field_template: "storage_only",
+      type_name: "EUserDrag",
+      field_group: "rare-non-inherited",
+      default_value: "DRAG_AUTO",
+      field_size: 2,
     },
     {
       name: "-webkit-user-modify",
       inherited: true,
       field_template: "keyword",
       keywords: ["read-only", "read-write", "read-write-plaintext-only"],
       default_value: "read-only",
       field_group: "rare-inherited",
     },
     {
@@ skipping 828 matching lines @@
     {
       name: "-webkit-transition-timing-function",
       alias_for: "transition-timing-function",
     },
     {
       name: "-webkit-user-select",
       alias_for: "user-select",
     },
   ],
 }