cruldra
86422e4671
let / let-else、if / else、match 各支、循环、隐式返回、闭包、unsafe / async 块照 Python / TypeScript 的约定拆块；特质同实现，方法卡挂在方法表那一行；函数卡去掉分情况表；Rust 语言插件给出调用结构
45 lines
1.9 KiB
TypeScript
45 lines
1.9 KiB
TypeScript
import type { ImplBlock, KindBadge, LibraryRule, PropertyRow, RuleCard, TraitBlock } from '../contract'
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import { implRows, plainSay, traitRows } from './rustRows'
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/** 和函数卡同一个黄，实现块看起来仍是函数那一挂。 */
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const IMPL: KindBadge = { label: '实现', color: { dark: '#dcdcaa', light: '#795e26' }, icon: 'square-function' }
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/** 和声明关键字同一个蓝，同特质这个种类在预览里的颜色。 */
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const TRAIT: KindBadge = { label: '特质', color: { dark: '#569cd6', light: '#0000ff' }, icon: 'network' }
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/**
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* impl、trait 的方法表：点方法名展开那张函数卡，函数体各句在卡里。
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* 方法挂在方法表的子行上（RuleSlot）。不看导入，Rust 文件都启用。
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*/
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export const rustImplRule: LibraryRule = {
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id: 'rust',
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label: 'Rust 实现与特质',
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languageIds: ['rust'],
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libraries: [],
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claim: (block, context) => {
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const say = plainSay(context.doc)
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if (block.kind === 'impl')
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return methodsCard(block, 'rust.impl', IMPL, implRows(block, say))
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if (block.kind === 'trait')
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return methodsCard(block, 'rust.trait', TRAIT, traitRows(block, say))
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return undefined
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},
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attributeNames: () => ({
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attributes: {},
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values: { kind: { 'rust.impl': '实现', 'rust.trait': '特质' } },
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}),
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}
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/** 带方法表的卡片：子块里的每个函数挂在「方法」那一行讲它的子行上，跟 rows 里的顺序一一对上。 */
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function methodsCard(block: ImplBlock | TraitBlock, kind: string, badge: KindBadge, rows: PropertyRow[]): RuleCard {
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const row = rows.findIndex(item => item.label === '方法')
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const methods = block.children.filter(child => child.kind === 'function')
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return {
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kind,
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badge,
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rows,
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...(block.facts.name && { defines: { startIndex: block.facts.name.startIndex, endIndex: block.facts.name.endIndex } }),
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absorbs: [],
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...(row >= 0 && { slots: methods.map((child, item) => ({ block: child, row, item })) }),
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}
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}
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