Extract this nested ternary operation into an independent statement

Author: daohoangson

packages/core/lib/src/core_helpers.dart

@@ -189,13 +189,17 @@ Uint8List? bytesFromDataUri(String dataUri) {
   final prefix = match[0]!;
   final encoding = match[1];
   final data = dataUri.substring(prefix.length);
-  final bytes = encoding == 'base64'
-      ? base64.decode(data)
-      : encoding == 'utf8'
-          ? Uint8List.fromList(data.codeUnits)
-          : null;
 
-  return bytes?.isNotEmpty == true ? bytes : null;
+  final Uint8List bytes;
+  if (encoding == 'base64') {
+    bytes = base64.decode(data);
+  } else if (encoding == 'utf8') {
+    bytes = Uint8List.fromList(data.codeUnits);
+  } else {
+    return null;
+  }
+
+  return bytes.isNotEmpty == true ? bytes : null;
 }
 
 /// Parses [key] from [map] as an double literal and return its value.

packages/core/lib/src/core_html_widget.dart

@@ -261,12 +261,15 @@ class HtmlWidgetState extends State<HtmlWidget> {
     return built;
   }
 
-  Widget _sliverToBoxAdapterIfNeeded(Widget child) =>
-      widget.renderMode == RenderMode.sliverList
-          ? child == widget0
-              ? const SliverToBoxAdapter(child: widget0)
-              : SliverToBoxAdapter(child: child)
-          : child;
+  Widget _sliverToBoxAdapterIfNeeded(Widget child) {
+    if (widget.renderMode != RenderMode.sliverList) {
+      return child;
+    }
+
+    return child == widget0
+        ? const SliverToBoxAdapter(child: widget0)
+        : SliverToBoxAdapter(child: child);
+  }
 
   Widget _wrapper(Widget child) =>
       _RootWidget(resolved: _rootProperties, child: child);

packages/core/lib/src/data/css.dart

@@ -217,15 +217,18 @@ class CssBorderSide {
   }
 
   static CssBorderSide? _copyWith(CssBorderSide? base, CssBorderSide? value) {
-    final copied = base == null || value == none
-        ? value
-        : value == null
-            ? base
-            : CssBorderSide(
-                color: value.color ?? base.color,
-                style: value.style ?? base.style,
-                width: value.width ?? base.width,
-              );
+    final CssBorderSide? copied;
+    if (base == null || value == none) {
+      copied = value;
+    } else if (value == null) {
+      copied = base;
+    } else {
+      copied = CssBorderSide(
+        color: value.color ?? base.color,
+        style: value.style ?? base.style,
+        width: value.width ?? base.width,
+      );
+    }
 
     if (copied?.isNoOp == true) {
       return none;

packages/core/lib/src/internal/margin_vertical.dart

@@ -1,3 +1,5 @@
+import 'dart:math';
+
 import 'package:flutter/widgets.dart';
 
 import '../core_data.dart';
@@ -65,8 +67,9 @@ extension SkipBuildHeightPlaceholder on BuildContext {
   /// This type of placeholder has special merging logic so they need
   /// to be preserved during column contents traversal.
   set skipBuildHeightPlaceholder(bool newValue) {
-    final v = _skipBuildOrZero;
-    _skipBuild[this] = newValue ? (v + 1) : (v > 0 ? v - 1 : 0);
+    final delta = newValue ? 1 : -1;
+    final newCounter = _skipBuildOrZero + delta;
+    _skipBuild[this] = max(0, newCounter);
   }
 
   int get _skipBuildOrZero => _skipBuild[this] ?? 0;

packages/core/lib/src/internal/ops/tag_li.dart

@@ -91,14 +91,23 @@ class TagLi {
   static StylesMap _defaultStyles(dom.Element element) {
     final attrs = element.attributes;
     final depth = element.elementDepth;
-    final listStyleType = element.localName == kTagOrderedList
-        ? (_listStyleTypeFromAttributeType(attrs[kAttributeLiType] ?? '') ??
-            kCssListStyleTypeDecimal)
-        : depth == 0
-            ? kCssListStyleTypeDisc
-            : depth == 1
-                ? kCssListStyleTypeCircle
-                : kCssListStyleTypeSquare;
+
+    final String listStyleType;
+    if (element.localName == kTagOrderedList) {
+      listStyleType =
+          _listStyleTypeFromAttributeType(attrs[kAttributeLiType] ?? '') ??
+              kCssListStyleTypeDecimal;
+    } else {
+      switch (depth) {
+        case 0:
+          listStyleType = kCssListStyleTypeDisc;
+        case 1:
+          listStyleType = kCssListStyleTypeCircle;
+        default:
+          listStyleType = kCssListStyleTypeSquare;
+      }
+    }
+
     return {
       kCssDisplay: kCssDisplayBlock,
       kCssListStyleType: listStyleType,

packages/core/lib/src/internal/ops/tag_table.dart

@@ -156,13 +156,10 @@ class TagTable {
         }
 
         final columnSpan = cell.columnSpan > 0 ? cell.columnSpan : 1;
+        final rowSpanDefault = cell.rowSpan == 0 ? group.rows.length : 1;
         final rowSpan = min(
           rowSpanMax,
-          cell.rowSpan > 0
-              ? cell.rowSpan
-              : cell.rowSpan == 0
-                  ? group.rows.length
-                  : 1,
+          cell.rowSpan > 0 ? cell.rowSpan : rowSpanDefault,
         );
 
         final builderIndex = data.builders.length;
@@ -310,11 +307,15 @@ class TagTable {
       case kCssDisplayTableHeaderGroup:
       case kCssDisplayTableRowGroup:
       case kCssDisplayTableFooterGroup:
-        final group = which == kCssDisplayTableHeaderGroup
-            ? data.header
-            : which == kCssDisplayTableRowGroup
-                ? data.newBody()
-                : data.footer;
+        final _TagTableRowGroup group;
+        switch (which) {
+          case kCssDisplayTableHeaderGroup:
+            group = data.header;
+          case kCssDisplayTableRowGroup:
+            group = data.newBody();
+          default:
+            group = data.footer;
+        }
         subTree.register(group._groupOp);
       case kCssDisplayTableRow:
         subTree.register(data.newBody().newRow()._rowOp);

packages/core/lib/src/internal/parser/color.dart

@@ -15,20 +15,30 @@ CssColor? tryParseColor(css.Expression? expression) {
       case 'hsla':
         final params = expression.params;
         if (params.length >= 3) {
-          final param0 = params[0];
-          final h = param0 is css.NumberTerm
-              ? _parseColorHue(param0.number)
-              : param0 is css.AngleTerm
-                  ? _parseColorHue(param0.angle, param0.unit)
-                  : null;
-          final param1 = params[1];
-          final s = param1 is css.PercentageTerm
-              ? param1.valueAsDouble.clamp(0.0, 1.0)
-              : null;
-          final param2 = params[2];
-          final l = param2 is css.PercentageTerm
-              ? param2.valueAsDouble.clamp(0.0, 1.0)
-              : null;
+          final [param0, param1, param2] = params;
+          final double? h;
+          if (param0 is css.NumberTerm) {
+            h = _parseColorHue(param0.number);
+          } else if (param0 is css.AngleTerm) {
+            h = _parseColorHue(param0.angle, param0.unit);
+          } else {
+            h = null;
+          }
+
+          final double? s;
+          if (param1 is css.PercentageTerm) {
+            s = param1.valueAsDouble.clamp(0.0, 1.0);
+          } else {
+            s = null;
+          }
+
+          final double? l;
+          if (param2 is css.PercentageTerm) {
+            l = param2.valueAsDouble.clamp(0.0, 1.0);
+          } else {
+            l = null;
+          }
+
           final hslA = params.length >= 4 ? _parseColorAlpha(params[3]) : 1.0;
           if (h != null && s != null && l != null && hslA != null) {
             final hslValue = HSLColor.fromAHSL(hslA, h, s, l).toColor();