✨ feat(vscode): 代码阅读认出 Python 数据类（@dataclass），整块换成「数据类」卡片，选项和字段的默认值、field 参数写成大白话

vscode/src/codeReader/rules/sqlalchemy.ts

@@ -1,7 +1,7 @@
 import type { ClassBlock, CodeBlock, Inline, LibraryRule, Node, PropertyItem, PropertyRow, RuleCard, RuleContext, ThemeColor, TokenRole } from '../contract'
 import type { Call } from './pythonTree'
 import { withLeadingComments } from './children'
-import { aliasesOf, callOf, canonicalName, lastName, stringValue, syntaxChildren } from './pythonTree'
+import { aliasesOf, callOf, canonicalName, genericOf, lastName, stringValue, syntaxChildren, unwrapType } from './pythonTree'
 import { hint, joined, name, plain, range, word } from './segments'
 
 /**
@@ -164,22 +164,10 @@ function memberOf(block: CodeBlock): Member | undefined {
   }
 }
 
-/** 注解里 `type` 节点只包着一个类型时取里面那个。 */
-function unwrapType(node: Node): Node {
-  const inner = node.type === 'type' ? syntaxChildren(node) : []
-  return inner.length === 1 ? inner[0] : node
-}
-
 /** `Mapped[X]`（`so.Mapped[X]`）里的 X；注解不是 Mapped[...] 时没有。 */
 function mappedType(annotation: Node | undefined): Node | undefined {
-  const node = annotation && unwrapType(annotation)
-  if (node?.type === 'generic_type') {
-    const [head, parameters] = syntaxChildren(node)
-    return lastName(head) === 'Mapped' ? syntaxChildren(parameters)[0] : undefined
-  }
-  if (node?.type === 'subscript' && lastName(node.childForFieldName('value')) === 'Mapped')
-    return node.childForFieldName('subscript') ?? undefined
-  return undefined
+  const generic = genericOf(annotation)
+  return generic && lastName(generic.head) === 'Mapped' ? generic.args[0] : undefined
 }
 
 function isNone(node: Node): boolean {