✨ feat(vscode): 代码阅读加 FastAPI 接口卡片：请求表（URL、方法、路径 / 查询参数、请求头、Cookie、请求体）、按状态码的响应表（成功、responses、函数里抛的异常、自动带的 422）；别的文件里的异常状态码、类型别名经工作区索引和语言扩展查
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import type { FunctionBlock, ImportFacts, IndexEntry, Inline, LibraryRule, Node, ParameterFacts, PropertyItem, PropertyRow, RuleCard, RuleContext, Segment, ThemeColor, WorkspaceIndex } from '../contract'
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import type { Call, LibraryNames } from './pythonTree'
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import { callOf, genericOf, lastName, libraryName, stringContent, syntaxChildren, unwrapType } from './pythonTree'
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import { hint, joined, name, range, word } from './segments'
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/**
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* FastAPI 库规则：挂在路由对象上的函数（`@router.get(...)` 这类装饰器，router 是同一文件模块顶层 `X = APIRouter(...)` / `X = FastAPI(...)`
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* 赋值出来的）整块换成「接口」卡片，函数体照常是子块。卡片：名称 / 说明 / 标签 / 异步 / 依赖，然后请求表（一项一行）、响应表（一个状态码一行）。
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* 参数放在请求的哪儿照 FastAPI 的规则认（见 placeOf）；函数体里直接抛的异常按状态码归进响应表：HTTPException 看 status_code，
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* 自定义的异常类看类上的 `status_code = N`，类写在别处时经工作区索引查（NAMES_INDEX，RuleContext.lookup）。
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* 挂到应用上时再叠的前缀（include_router、settings.API_V1_PREFIX）在别的文件里，URL 不算。用词都在词表里，按翻译插件的显示语言挑。
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*/
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const RULE_ID = 'fastapi'
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const KIND = 'fastapi.route'
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const COLOR: ThemeColor = { dark: '#61afef', light: '#1a6fb5' }
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const ICON = 'globe'
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/** 认路由对象、参数标记、HTTPException 时看从这几个库导入的名字（HTTPException、status 也可以从 starlette 来）。 */
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const NAME_LIBRARIES = ['fastapi', 'starlette']
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/** 路由对象上挂接口的方法：`router.get`、`app.post` …… */
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const METHODS = new Set(['get', 'post', 'put', 'patch', 'delete', 'head', 'options', 'trace'])
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/** HTTP 方法的颜色：Swagger UI 的配色，看接口文档的人最熟；白底上照原色看不清，亮色主题取同色相深一些的。 */
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const METHOD_COLORS: Record<string, ThemeColor> = {
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GET: { dark: '#61affe', light: '#1b6ac9' },
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POST: { dark: '#49cc90', light: '#18834f' },
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PUT: { dark: '#fca130', light: '#b35f00' },
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PATCH: { dark: '#50e3c2', light: '#0f8a70' },
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DELETE: { dark: '#f93e3e', light: '#cf2020' },
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HEAD: { dark: '#b36bff', light: '#9012fe' },
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OPTIONS: { dark: '#4b92e0', light: '#0d5aa7' },
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}
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/** 成功（小于 400）的状态码的颜色。 */
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const SUCCESS_COLOR: ThemeColor = { dark: '#2ea043', light: '#1a7f37' }
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/** 参数上写的 FastAPI 标记（默认值 `= Query(...)`，或 `Annotated[T, Query(...)]` 里的）→ 放在请求的哪儿。 */
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const MARKER_PLACES: Record<string, Place> = {
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Path: 'path',
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Query: 'query',
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Header: 'header',
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Cookie: 'cookie',
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Body: 'body',
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Form: 'body',
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File: 'body',
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Depends: 'dependency',
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Security: 'dependency',
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}
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/** FastAPI 自己往里填、不是请求带来的参数类型。 */
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const INJECTED = new Set(['Request', 'Response', 'WebSocket', 'HTTPConnection', 'BackgroundTasks', 'SecurityScopes'])
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/** 简单类型：没写标记时是查询参数；别的类（Pydantic 模型）是请求体。 */
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const SIMPLE = new Set(['int', 'float', 'str', 'bool', 'bytes', 'complex', 'UUID', 'datetime', 'date', 'time', 'timedelta', 'Decimal', 'Any', 'EmailStr', 'HttpUrl', 'AnyUrl', 'SecretStr'])
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/** 包着别的类型的写法：里面都是简单类型时它也是（`list[str]`、`Optional[int]`）。 */
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const WRAPPERS = new Set(['Optional', 'Union', 'list', 'List', 'set', 'Set', 'frozenset', 'FrozenSet', 'tuple', 'Tuple', 'Sequence'])
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/** enum 库的枚举类型：父类是它们的类是简单类型（查询参数）。 */
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const ENUM_BASES = new Set(['Enum', 'IntEnum', 'StrEnum', 'Flag', 'IntFlag'])
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/** 类属性、状态码常量里的状态码：`status_code = 403`、`status.HTTP_403_FORBIDDEN`。 */
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const STATUS_NAME = /^HTTP_(\d{3})_/
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type Place = 'path' | 'query' | 'header' | 'cookie' | 'body' | 'dependency'
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/** 一种显示语言的用词。 */
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interface Words {
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kind: string
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labels: Record<'name' | 'doc' | 'tags' | 'async' | 'decorators' | 'dependencies' | 'request' | 'responses', string>
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yes: string
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no: string
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requestHeads: string[]
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responseHeads: string[]
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items: Record<'url' | 'method' | 'path' | 'query' | 'header' | 'cookie' | 'body', string>
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/** 成功那一行没写 response_description 时的说明 */
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success: string
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/** FastAPI 自动带的 422：内容、说明 */
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validation: string
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automatic: string
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/** 几项之间（标签、依赖、内容）、几条消息之间 */
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listSeparator: string
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messageSeparator: string
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/** 依赖注进哪个参数：「（param）」 */
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injectedInto: (param: string) => string
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}
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const ZH: Words = {
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kind: '接口',
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labels: { name: '名称', doc: '说明', tags: '标签', async: '异步', decorators: '装饰器', dependencies: '依赖', request: '请求', responses: '响应' },
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yes: '是',
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no: '否',
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requestHeads: ['项', '值'],
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responseHeads: ['状态码', '内容', '说明'],
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items: { url: 'URL', method: '方法', path: '路径参数', query: '查询参数', header: '请求头', cookie: 'Cookie', body: '请求体' },
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success: '成功',
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validation: '参数校验失败',
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automatic: 'FastAPI 自动返回',
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listSeparator: '、',
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messageSeparator: '；',
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injectedInto: param => `（${param}）`,
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}
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/** 显示语言 → 用词；翻译插件的显示语言这里没有时用中文。 */
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const WORDS: Record<string, Words> = { zh: ZH }
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interface Env {
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context: RuleContext
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words: Words
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/** fastapi、starlette 和从它们导入的名字 */
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names: LibraryNames
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}
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// ─── 别的文件里的定义 ─────────────────────────────────────────────────────────
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/** 状态码写法 → 三位数字：整数字面量、`HTTP_403_FORBIDDEN` 这种常量（`status.` 开头也算）。 */
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function statusNumber(node: Node | null | undefined): string | undefined {
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if (node?.type === 'integer')
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return node.text
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const match = STATUS_NAME.exec(lastName(node) ?? '')
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return match?.[1]
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}
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/** 类主体里 `status_code = N`（带不带注解）写的状态码。 */
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function classStatus(definition: Node): string | undefined {
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for (const statement of syntaxChildren(definition.childForFieldName('body'))) {
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const [assignment] = statement.type === 'expression_statement' ? syntaxChildren(statement) : []
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if (assignment?.type === 'assignment' && assignment.childForFieldName('left')?.text === 'status_code') {
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const status = statusNumber(assignment.childForFieldName('right'))
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if (status)
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return status
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}
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}
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return undefined
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}
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/**
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* `Annotated[T, ..., Query(...)]`：T，和里面的 FastAPI 标记（调用）。markerName 认调用的是哪个标记：
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* 本文件按导入认（fastapi 里的名字），别的文件（建索引时）只看名字的最后一节。
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*/
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function annotatedMarker(node: Node | null | undefined, markerName: (call: Node) => string | undefined): { type?: Node, marker?: Node } | undefined {
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const generic = node ? genericOf(node) : undefined
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if (!generic || lastName(generic.head) !== 'Annotated')
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return undefined
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const [type, ...metadata] = generic.args.map(unwrapType)
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return { type, marker: metadata.find(item => MARKER_PLACES[markerName(item) ?? ''] !== undefined) }
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}
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/** 调用的函数名的最后一节（建索引时认别的文件里的标记）。 */
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function calleeName(node: Node): string | undefined {
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return node.type === 'call' ? lastName(node.childForFieldName('function')) : undefined
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}
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/**
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* 从一份文件的模块顶层认出别的文件要查的名字，值是：
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* - 类上写了 `status_code = N` 的（异常类）：状态码 N；
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* - 父类是 enum 枚举类型的类：`Enum`（简单类型，查询参数）；
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* - `X = Annotated[T, Query(...)]` 这种类型别名：标记名（`Query`、`Path`、`Depends` ……）。
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*/
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function indexEntries(root: Node): IndexEntry[] {
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const entries: IndexEntry[] = []
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for (const statement of syntaxChildren(root)) {
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const definition = statement.type === 'decorated_definition' ? statement.childForFieldName('definition') : statement
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if (definition?.type === 'class_definition') {
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const className = definition.childForFieldName('name')
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const status = classStatus(definition)
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const enumType = syntaxChildren(definition.childForFieldName('superclasses')).some(base => ENUM_BASES.has(lastName(base) ?? ''))
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const value = status ?? (enumType ? 'Enum' : undefined)
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if (className && value)
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entries.push({ key: className.text, name: range(className), value })
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continue
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}
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const [assignment] = statement.type === 'expression_statement' ? syntaxChildren(statement) : []
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const target = assignment?.type === 'assignment' ? assignment.childForFieldName('left') : null
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const marker = annotatedMarker(assignment?.childForFieldName('right'), calleeName)?.marker
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if (target?.type === 'identifier' && marker)
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entries.push({ key: target.text, name: range(target), value: calleeName(marker) })
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}
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return entries
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}
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const NAMES_INDEX: WorkspaceIndex = {
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id: `${RULE_ID}.names`,
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languageId: 'python',
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include: '**/*.py',
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mentions: source => /\bstatus_code\b|\bAnnotated\b|Enum\b/.test(source),
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entries: root => indexEntries(root),
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}
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/** 名字（`Forbidden`、`exceptions.Forbidden` 的最后一节）的定义在索引里认出的值；没查到是 undefined。 */
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function definedValue(node: Node | null | undefined, env: Env): string | undefined {
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const target = node?.type === 'attribute' ? node.childForFieldName('attribute') : node
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return target?.type === 'identifier' ? env.context.lookup(NAMES_INDEX, target)?.value : undefined
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}
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// ─── 读语法树 ─────────────────────────────────────────────────────────────────
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/** fastapi、starlette（连子模块）自己和从它们导入的名字：本地名 → 原名。 */
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function namesOf(imports: readonly ImportFacts[]): LibraryNames {
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const names: LibraryNames = { modules: new Set(), imported: new Map() }
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const ours = (module: string): boolean => NAME_LIBRARIES.some(library => module === library || module.startsWith(`${library}.`))
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for (const facts of imports) {
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const from = facts.sources.some(source => ours(source.text))
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for (const item of facts.items) {
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if (item.kind === 'module' && ours(item.module.text))
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names.modules.add(item.alias?.text ?? item.module.text)
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else if (item.kind === 'named' && from)
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names.imported.set(item.alias?.text ?? item.name.text, item.name.text)
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}
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}
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return names
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}
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/** 调用的是 fastapi / starlette 里的哪个名字（`Query(...)`、`fastapi.APIRouter(...)`）。 */
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function calledName(node: Node | null | undefined, env: Env): string | undefined {
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return node?.type === 'call' ? libraryName(node.childForFieldName('function'), env.names) : undefined
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}
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/** 列表、元组的各项；别的写法当一项。 */
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function listItems(node: Node | undefined): Node[] {
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if (!node)
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return []
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return node.type === 'list' || node.type === 'tuple' ? syntaxChildren(node) : [node]
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}
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/** 路由对象：同一文件模块顶层 `X = APIRouter(...)` / `X = FastAPI(...)` 赋值出来的，和它给挂在上面的接口叠的东西。 */
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interface Router {
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prefix?: Node
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tags: Node[]
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dependencies: Node[]
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responses?: Node
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}
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function routersOf(root: Node, env: Env): Map<string, Router> {
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const routers = new Map<string, Router>()
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for (const statement of syntaxChildren(root)) {
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const [assignment] = statement.type === 'expression_statement' ? syntaxChildren(statement) : []
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const target = assignment?.type === 'assignment' ? assignment.childForFieldName('left') : null
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const value = assignment?.childForFieldName('right')
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const kind = calledName(value, env)
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const call = callOf(value, new Map())
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if (target?.type !== 'identifier' || !call || (kind !== 'APIRouter' && kind !== 'FastAPI'))
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continue
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routers.set(target.text, {
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prefix: kind === 'APIRouter' ? call.keywords.get('prefix') : undefined,
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tags: listItems(call.keywords.get('tags')),
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dependencies: listItems(call.keywords.get('dependencies')),
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responses: call.keywords.get('responses'),
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})
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}
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return routers
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}
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/** 挂在路由对象上的一个接口：`@router.put("/{user_id}", ...)`。 */
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interface Route {
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decorator: Node
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router: Router
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method: string
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call: Call
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path?: Node
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}
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function routeOf(decorator: Node, routers: ReadonlyMap<string, Router>): Route | undefined {
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const [expression] = syntaxChildren(decorator)
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const callee = expression?.type === 'call' ? expression.childForFieldName('function') : null
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const object = callee?.type === 'attribute' ? callee.childForFieldName('object') : null
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const method = callee?.childForFieldName('attribute')?.text
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const router = object?.type === 'identifier' ? routers.get(object.text) : undefined
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const call = callOf(expression, new Map())
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if (!router || !call || !method || !METHODS.has(method))
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return undefined
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return { decorator, router, method: method.toUpperCase(), call, path: call.positional[0] ?? call.keywords.get('path') }
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}
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/** 路径里的一段：`{参数}` 按变量着色，其余按字符串，带源码下标；写的不是字符串时交给翻译插件翻。 */
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function pathSegments(node: Node | undefined, env: Env): Inline[] {
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if (!node)
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return []
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||||
const content = stringContent(node)
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if (!content)
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return env.context.translate(node)
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const segments: Segment[] = []
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let at = content.node?.startIndex ?? node.startIndex
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for (const part of content.text.split(/(\{[^}]*\})/).filter(Boolean)) {
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segments.push({ text: part, role: part.startsWith('{') ? 'variable' : 'string', offset: at })
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at += part.length
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}
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return segments
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}
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||||
/** 路径里的参数名：`{user_id}`、`{file_path:path}` 里冒号前面的。 */
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function pathNames(parts: readonly (Node | undefined)[]): Set<string> {
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||||
const text = parts.map(part => stringContent(part)?.text ?? '').join('')
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||||
return new Set([...text.matchAll(/\{([^}:]+)(?::[^}]*)?\}/g)].map(match => match[1].trim()))
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||||
}
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||||
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/** 一个参数放在请求的哪儿；FastAPI 自己往里填的（Request……）、`*args` 这种没有。 */
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interface Placed {
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||||
place: Place
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||||
param: Node
|
||||
/** 参数的类型（`Annotated[T, ...]` 取 T）；没标注的没有 */
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||||
type?: Node
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||||
/** 依赖：Depends(x) 的 x */
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||||
dependency?: Node
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||||
}
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||||
|
||||
/** 类型最外层的名字：`int`、`list[str]` 的 list、`sa.UUID` 的 UUID。 */
|
||||
function headName(type: Node): string | undefined {
|
||||
return lastName(genericOf(type)?.head ?? unwrapType(type))
|
||||
}
|
||||
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||||
/** 简单类型（FastAPI 当查询参数的）：内置的标量、UUID、日期时间、Literal，枚举类（别处定义的经索引查），和只包着它们的 Optional / list / `X | None`。 */
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||||
function isSimple(node: Node, env: Env): boolean {
|
||||
const type = unwrapType(node)
|
||||
if (type.type === 'none')
|
||||
return true
|
||||
if (type.type === 'binary_operator')
|
||||
return syntaxChildren(type).every(side => isSimple(side, env))
|
||||
const generic = genericOf(type)
|
||||
if (generic) {
|
||||
const head = lastName(generic.head)
|
||||
if (head === 'Literal')
|
||||
return true
|
||||
if (head === 'Annotated')
|
||||
return generic.args.length > 0 && isSimple(generic.args[0], env)
|
||||
return head !== undefined && WRAPPERS.has(head) && generic.args.every(arg => arg.type === 'ellipsis' || isSimple(arg, env))
|
||||
}
|
||||
const head = lastName(type)
|
||||
return head !== undefined && (SIMPLE.has(head) || definedValue(type, env) === 'Enum')
|
||||
}
|
||||
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||||
/** 上传文件（`UploadFile`、`list[UploadFile]`）：FastAPI 当表单里的文件，是请求体。 */
|
||||
function isUpload(type: Node): boolean {
|
||||
const generic = genericOf(type)
|
||||
return headName(type) === 'UploadFile' || (generic !== undefined && WRAPPERS.has(lastName(generic.head) ?? '') && generic.args.some(isUpload))
|
||||
}
|
||||
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||||
/**
|
||||
* 参数放在请求的哪儿，照 FastAPI 的规则：Depends / Security 是依赖；名字在路径里是路径参数；写了 Query / Header / Cookie / Body / Form / File
|
||||
* 照写的（默认值 `= Query(...)` 或 `Annotated[T, Query(...)]`，别处写好的 `X = Annotated[T, Query(...)]` 经索引查）；
|
||||
* Request 这些 FastAPI 自己填的不算；上传文件、别的类（Pydantic 模型）是请求体；其余简单类型、没标注的是查询参数。
|
||||
*/
|
||||
function placeOf(parameter: ParameterFacts, inPath: ReadonlySet<string>, env: Env): Placed | undefined {
|
||||
const param = parameter.name
|
||||
if (param.type !== 'identifier')
|
||||
return undefined
|
||||
const annotated = annotatedMarker(parameter.type, call => calledName(call, env))
|
||||
const type = annotated?.type ?? (parameter.type && unwrapType(parameter.type))
|
||||
const markerCall = MARKER_PLACES[calledName(parameter.default, env) ?? ''] ? parameter.default : annotated?.marker
|
||||
const marker = markerCall && calledName(markerCall, env)
|
||||
if (markerCall && marker && MARKER_PLACES[marker] === 'dependency') {
|
||||
const call = callOf(markerCall, new Map())
|
||||
return { place: 'dependency', param, dependency: call?.positional[0] ?? call?.keywords.get('dependency') ?? type }
|
||||
}
|
||||
if (inPath.has(param.text))
|
||||
return { place: 'path', param, type }
|
||||
if (marker && MARKER_PLACES[marker])
|
||||
return { place: MARKER_PLACES[marker], param, type }
|
||||
const alias = type && (type.type === 'identifier' || type.type === 'attribute') ? definedValue(type, env) : undefined
|
||||
if (alias && MARKER_PLACES[alias])
|
||||
return MARKER_PLACES[alias] === 'dependency' ? { place: 'dependency', param, dependency: type } : { place: MARKER_PLACES[alias], param, type }
|
||||
if (type && INJECTED.has(headName(type) ?? ''))
|
||||
return undefined
|
||||
if (type && isUpload(type))
|
||||
return { place: 'body', param, type }
|
||||
return !type || isSimple(type, env) ? { place: 'query', param, type } : { place: 'body', param, type }
|
||||
}
|
||||
|
||||
/** 函数体里直接抛的异常（嵌套的函数、类、lambda 里的不算）。 */
|
||||
function raisesIn(node: Node | null | undefined): Node[] {
|
||||
const found: Node[] = []
|
||||
const visit = (current: Node): void => {
|
||||
for (const child of syntaxChildren(current)) {
|
||||
if (child.type === 'raise_statement')
|
||||
found.push(child)
|
||||
else if (!['function_definition', 'class_definition', 'decorated_definition', 'lambda'].includes(child.type))
|
||||
visit(child)
|
||||
}
|
||||
}
|
||||
if (node)
|
||||
visit(node)
|
||||
return found
|
||||
}
|
||||
|
||||
// ─── 写成属性表 ───────────────────────────────────────────────────────────────
|
||||
|
||||
/** 一串词拼成的文字（框写框头）。 */
|
||||
function textOf(pieces: readonly Inline[]): string {
|
||||
return pieces.map(piece => 'role' in piece ? piece.text : piece.label).join('')
|
||||
}
|
||||
|
||||
/** 依赖的名字：写成一个名字时按函数着色，别的交给翻译插件翻。 */
|
||||
function dependencyText(node: Node, env: Env): Inline[] {
|
||||
return node.type === 'identifier' ? [name(node, 'function')] : env.context.translate(node)
|
||||
}
|
||||
|
||||
/** `dependencies=[Depends(x), ...]` 里的各个 x。 */
|
||||
function listedDependencies(items: readonly Node[], env: Env): Inline[][] {
|
||||
return items.flatMap((item) => {
|
||||
const call = MARKER_PLACES[calledName(item, env) ?? ''] === 'dependency' ? callOf(item, new Map()) : undefined
|
||||
const dependency = call?.positional[0] ?? call?.keywords.get('dependency')
|
||||
return dependency ? [dependencyText(dependency, env)] : []
|
||||
})
|
||||
}
|
||||
|
||||
/** 标签：字符串照写（不带引号，带下标），别的交给翻译插件翻。 */
|
||||
function tagText(node: Node, env: Env): Inline[] {
|
||||
const content = stringContent(node)
|
||||
return content?.node ? [{ text: content.text, role: 'string', offset: content.node.startIndex }] : env.context.translate(node)
|
||||
}
|
||||
|
||||
/** 「名称: 类型」一串，逗号隔开；没标注的只写名称。 */
|
||||
function paramsText(placed: readonly Placed[], env: Env): Inline[] {
|
||||
return joined(placed.map(({ param, type }) => [name(param, 'variable'), ...(type ? [{ text: ': ', role: 'plain' as const }, ...env.context.translate(type)] : [])]), { text: ', ', role: 'plain' })
|
||||
}
|
||||
|
||||
/** 响应表里一个状态码的一行：状态码、内容、说明，同一个状态码的几处写在一起。 */
|
||||
interface Status {
|
||||
code: Inline[]
|
||||
/** 三位数字的状态码按大小排，别的（`"4XX"`、`default`）排在后面 */
|
||||
order: number
|
||||
contents: Inline[][]
|
||||
notes: Inline[][]
|
||||
}
|
||||
|
||||
/** 响应表里的状态码：三位数字的（按大小排、上色），或照写的（`"5XX"`、交给翻译插件翻的表达式）。 */
|
||||
type StatusCode = { key: string, number: number } | { key: string, cell: Inline[] }
|
||||
|
||||
function numericStatus(code: string): StatusCode {
|
||||
return { key: code, number: Number(code) }
|
||||
}
|
||||
|
||||
/** 状态码写法 → 状态码：`403`、`status.HTTP_403_FORBIDDEN`、`"403"` 是数字，别的字符串（`"5XX"`）照写，别的写法交给翻译插件翻。 */
|
||||
function statusCodeOf(node: Node, env: Env): StatusCode {
|
||||
const text = stringContent(node)?.text
|
||||
const number = statusNumber(node) ?? (text !== undefined && /^\d{3}$/.test(text) ? text : undefined)
|
||||
if (number)
|
||||
return numericStatus(number)
|
||||
return text !== undefined ? { key: text, cell: [{ text, role: 'string' }] } : { key: node.text, cell: env.context.translate(node) }
|
||||
}
|
||||
|
||||
/** 响应表的各行：一个状态码一行，同一个状态码的几处写进同一行（内容、说明各自去重）。 */
|
||||
class Statuses {
|
||||
private readonly byKey = new Map<string, Status>()
|
||||
|
||||
add(status: StatusCode, content?: Inline[], note?: Inline[]): void {
|
||||
let row = this.byKey.get(status.key)
|
||||
if (!row) {
|
||||
const code: Inline[] = 'cell' in status
|
||||
? status.cell
|
||||
: [status.number < 400 ? { text: status.key, role: 'number', color: SUCCESS_COLOR } : { text: status.key, role: 'string' }]
|
||||
row = { code, order: 'number' in status ? status.number : Number.POSITIVE_INFINITY, contents: [], notes: [] }
|
||||
this.byKey.set(status.key, row)
|
||||
}
|
||||
if (content && content.length > 0 && !row.contents.some(known => textOf(known) === textOf(content)))
|
||||
row.contents.push(content)
|
||||
if (note && note.length > 0 && !row.notes.some(known => textOf(known) === textOf(note)))
|
||||
row.notes.push(note)
|
||||
}
|
||||
|
||||
rows(): Status[] {
|
||||
return [...this.byKey.values()].sort((a, b) => a.order - b.order)
|
||||
}
|
||||
}
|
||||
|
||||
/** `responses={404: {"model": X, "description": "…"}, ...}` 的各项：模型是内容，description 是说明；值不是字典时整个是内容。 */
|
||||
function addResponses(node: Node | undefined, statuses: Statuses, env: Env): void {
|
||||
if (node?.type !== 'dictionary')
|
||||
return
|
||||
for (const pair of syntaxChildren(node)) {
|
||||
const key = pair.type === 'pair' ? pair.childForFieldName('key') : null
|
||||
const value = pair.childForFieldName('value')
|
||||
if (!key || !value)
|
||||
continue
|
||||
if (value.type !== 'dictionary') {
|
||||
statuses.add(statusCodeOf(key, env), env.context.translate(value))
|
||||
continue
|
||||
}
|
||||
const fields = new Map(syntaxChildren(value).flatMap((field) => {
|
||||
const fieldKey = field.type === 'pair' ? stringContent(field.childForFieldName('key'))?.text : undefined
|
||||
const fieldValue = field.childForFieldName('value')
|
||||
return fieldKey !== undefined && fieldValue ? [[fieldKey, fieldValue] as const] : []
|
||||
}))
|
||||
const model = fields.get('model')
|
||||
const description = stringContent(fields.get('description'))?.text
|
||||
statuses.add(statusCodeOf(key, env), model && modelText(model, env), description ? [{ text: description, role: 'comment' }] : undefined)
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* 写在参数值里的响应模型（response_model=、responses 里的 "model"）：写成一个名字时按类型着色（翻译插件翻表达式时把它当变量），
|
||||
* 别的交给翻译插件翻。返回类型是注解，翻译插件本来就按类型翻。
|
||||
*/
|
||||
function modelText(node: Node, env: Env): Inline[] {
|
||||
return node.type === 'identifier' ? [name(node, 'type')] : env.context.translate(node)
|
||||
}
|
||||
|
||||
/** 抛出时带的消息：字符串照写（说明色），别的交给翻译插件翻。 */
|
||||
function messageText(node: Node | undefined, env: Env): Inline[] | undefined {
|
||||
if (!node)
|
||||
return undefined
|
||||
const content = stringContent(node)
|
||||
return content ? [{ text: content.text, role: 'comment' }] : env.context.translate(node)
|
||||
}
|
||||
|
||||
/** 函数体里直接抛的异常按状态码归进去：HTTPException 看 status_code、detail；别的类看索引里查到的类上的 status_code，消息是第一个参数（或 message=、detail=）。 */
|
||||
function addRaises(body: Node | null | undefined, statuses: Statuses, env: Env): void {
|
||||
for (const raise of raisesIn(body)) {
|
||||
const [thrown] = syntaxChildren(raise)
|
||||
if (!thrown)
|
||||
continue
|
||||
const callee = thrown.type === 'call' ? thrown.childForFieldName('function') : thrown
|
||||
const call = callOf(thrown, new Map())
|
||||
const className = callee?.type === 'attribute' ? callee.childForFieldName('attribute') : callee
|
||||
if (className?.type !== 'identifier')
|
||||
continue
|
||||
if (libraryName(callee, env.names) === 'HTTPException') {
|
||||
const status = call?.keywords.get('status_code') ?? call?.positional[0]
|
||||
if (status)
|
||||
statuses.add(statusCodeOf(status, env), [name(className, 'type')], messageText(call?.keywords.get('detail') ?? call?.positional[1], env))
|
||||
continue
|
||||
}
|
||||
const status = definedValue(className, env)
|
||||
if (status && /^\d{3}$/.test(status))
|
||||
statuses.add(numericStatus(status), [name(className, 'type')], messageText(call?.positional[0] ?? call?.keywords.get('message') ?? call?.keywords.get('detail'), env))
|
||||
}
|
||||
}
|
||||
|
||||
/** 请求表的一行：项 | 值。 */
|
||||
function requestItem(label: string, value: Inline[]): PropertyItem {
|
||||
return { cells: [[hint(label)], value] }
|
||||
}
|
||||
|
||||
function routeCard(block: FunctionBlock, route: Route, env: Env): RuleCard {
|
||||
const { context, words } = env
|
||||
const { labels } = words
|
||||
const { facts } = block
|
||||
const { router, call } = route
|
||||
const separator = hint(words.listSeparator)
|
||||
|
||||
const inPath = pathNames([router.prefix, route.path])
|
||||
const placed = facts.parameters.flatMap(parameter => placeOf(parameter, inPath, env) ?? [])
|
||||
const at = (place: Place): Placed[] => placed.filter(item => item.place === place)
|
||||
const body = at('body')
|
||||
|
||||
const url = [...pathSegments(router.prefix, env), ...pathSegments(route.path, env)]
|
||||
const request: PropertyItem[] = [
|
||||
requestItem(words.items.url, url),
|
||||
requestItem(words.items.method, [{ text: route.method, role: 'keyword', ...(METHOD_COLORS[route.method] && { color: METHOD_COLORS[route.method] }) }]),
|
||||
...(['path', 'query', 'header', 'cookie'] as const).flatMap(place => at(place).length > 0 ? [requestItem(words.items[place], paramsText(at(place), env))] : []),
|
||||
...(body.length > 0 ? [requestItem(words.items.body, body.length === 1 && body[0].type ? context.translate(body[0].type) : paramsText(body, env))] : []),
|
||||
]
|
||||
|
||||
const statuses = new Statuses()
|
||||
const success = call.keywords.get('status_code')
|
||||
const model = call.keywords.get('response_model')
|
||||
const description = stringContent(call.keywords.get('response_description'))?.text
|
||||
// 没写 response_model 时内容是返回类型；`-> None` 没有内容
|
||||
const returned = facts.returnType && unwrapType(facts.returnType).type !== 'none' ? facts.returnType : undefined
|
||||
statuses.add(
|
||||
success ? statusCodeOf(success, env) : numericStatus('200'),
|
||||
model ? (model.type === 'none' ? undefined : modelText(model, env)) : returned && context.translate(returned),
|
||||
[{ text: description ?? words.success, role: 'comment' }],
|
||||
)
|
||||
addResponses(router.responses, statuses, env)
|
||||
addResponses(call.keywords.get('responses'), statuses, env)
|
||||
const definition = block.node.type === 'decorated_definition' ? block.node.childForFieldName('definition') : block.node
|
||||
addRaises(definition?.childForFieldName('body'), statuses, env)
|
||||
if (placed.some(item => item.place !== 'dependency'))
|
||||
statuses.add(numericStatus('422'), [hint(words.validation)], [hint(words.automatic)])
|
||||
const responses = statuses.rows()
|
||||
|
||||
const doc = facts.doc && context.doc(facts.doc)
|
||||
const tags = [...router.tags, ...listItems(call.keywords.get('tags'))].map(tag => tagText(tag, env))
|
||||
const decorators = facts.decorators.filter(other => other !== route.decorator)
|
||||
const dependencies = [
|
||||
...listedDependencies(router.dependencies, env),
|
||||
...listedDependencies(listItems(call.keywords.get('dependencies')), env),
|
||||
...at('dependency').flatMap(({ param, dependency }) => dependency
|
||||
? [[...dependencyText(dependency, env), ...(param.text === '_' ? [] : [hint(words.injectedInto(param.text))])]]
|
||||
: []),
|
||||
]
|
||||
const rows: PropertyRow[] = [
|
||||
...(facts.name ? [{ label: labels.name, value: [name(facts.name, 'function')] }] : []),
|
||||
...(doc ? [{ label: labels.doc, value: doc }] : []),
|
||||
...(tags.length > 0 ? [{ label: labels.tags, value: joined(tags, separator) }] : []),
|
||||
{ label: labels.async, value: [word(facts.async ? words.yes : words.no)] },
|
||||
...(decorators.length > 0 ? [{ label: labels.decorators, value: joined(decorators.map(other => context.translate(other)), { text: '\n', role: 'plain' }) }] : []),
|
||||
...(dependencies.length > 0 ? [{ label: labels.dependencies, value: joined(dependencies, separator) }] : []),
|
||||
{
|
||||
label: labels.request,
|
||||
value: [hint(`${route.method} ${textOf(url)}`)],
|
||||
columns: words.requestHeads,
|
||||
items: request,
|
||||
},
|
||||
{
|
||||
label: labels.responses,
|
||||
value: [hint(responses.map(row => textOf(row.code)).join(' / '))],
|
||||
columns: words.responseHeads,
|
||||
items: responses.map(row => ({
|
||||
cells: [row.code, joined(row.contents, separator), joined(row.notes, { text: words.messageSeparator, role: 'comment' })],
|
||||
})),
|
||||
},
|
||||
]
|
||||
return {
|
||||
kind: KIND,
|
||||
badge: { label: words.kind, color: COLOR, icon: ICON },
|
||||
rows,
|
||||
...(facts.name && { defines: range(facts.name) }),
|
||||
absorbs: [],
|
||||
}
|
||||
}
|
||||
|
||||
export const fastapiRule: LibraryRule = {
|
||||
id: RULE_ID,
|
||||
label: 'FastAPI 接口',
|
||||
languageIds: ['python'],
|
||||
libraries: ['fastapi'],
|
||||
claim: (block, context) => {
|
||||
if (block.kind !== 'function' || block.facts.decorators.length === 0)
|
||||
return undefined
|
||||
const env: Env = { context, words: WORDS[context.displayLanguage ?? ''] ?? ZH, names: namesOf(context.imports) }
|
||||
const routers = routersOf(block.node.tree.rootNode, env)
|
||||
for (const decorator of block.facts.decorators) {
|
||||
const route = routeOf(decorator, routers)
|
||||
if (route)
|
||||
return routeCard(block, route, env)
|
||||
}
|
||||
return undefined
|
||||
},
|
||||
}
|
||||
Reference in new issue
Block a user