92 lines
3.7 KiB
TypeScript
92 lines
3.7 KiB
TypeScript
/**
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* AST walkers for the Cordis catalog generator: locate the Cordis module merge
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* in a source file, enumerate its `interface Events` members, and resolve the
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* `interface Context` service keys to their service classes.
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*/
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import ts from 'typescript'
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import { parseJsDoc, pointer, rawJsDoc } from './jsdoc.ts'
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/** The body of the cordis module merge in `sf`: `declare module 'cordis'`
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* (harness packages) or `declare module './context.ts'` (vendor core), or
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* null when the file has neither. */
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export function cordisModuleBody(sf: ts.SourceFile): ts.ModuleBlock | null {
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for (const stmt of sf.statements) {
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if (!ts.isModuleDeclaration(stmt) || !ts.isStringLiteral(stmt.name)) continue
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if (stmt.name.text !== 'cordis' && stmt.name.text !== './context.ts') continue
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if (stmt.body && ts.isModuleBlock(stmt.body)) return stmt.body
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}
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return null
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}
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/** Every `interface Events` method member of a cordis module merge, with the
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* event name resolved from its (possibly string-literal) property name. */
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export function eventMembers(body: ts.ModuleBlock, sf: ts.SourceFile): { name: string; member: ts.MethodSignature }[] {
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const out: { name: string; member: ts.MethodSignature }[] = []
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for (const stmt of body.statements) {
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if (!ts.isInterfaceDeclaration(stmt) || stmt.name.text !== 'Events') continue
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for (const member of stmt.members) {
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if (!ts.isMethodSignature(member)) continue
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const name = ts.isStringLiteral(member.name) ? member.name.text : member.name.getText(sf)
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out.push({ name, member })
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}
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}
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return out
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}
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/** The `ctx.<key> → type name` map declared by a merge's `interface Context`. */
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function contextKeyMap(body: ts.ModuleBlock, sf: ts.SourceFile): Map<string, string> {
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const keyToType = new Map<string, string>()
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for (const stmt of body.statements) {
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if (!ts.isInterfaceDeclaration(stmt) || stmt.name.text !== 'Context') continue
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for (const member of stmt.members) {
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if (!ts.isPropertySignature(member) || !member.type) continue
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keyToType.set(member.name.getText(sf), member.type.getText(sf))
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}
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}
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return keyToType
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}
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/** One `ctx.<key>` service class resolved from a Context merge. */
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export interface ServiceClass {
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key: string
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type: string
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cls: ts.ClassDeclaration
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abstract: boolean
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/** Class-level JSDoc prose (empty string when missing — also reported). */
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doc: string
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}
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/**
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* Resolve each `ctx.<key>` of a merge to the service class declared in the
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* same file. A key whose type is not a class here (a Pick-mixin member, e.g.
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* timer helpers) is skipped. A class without JSDoc prose is reported into
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* `violations` (named `where` by the caller's gate).
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*
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* @param body — the cordis module merge body.
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* @param sf — the source file containing the merge.
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* @param rel — repo-relative path of `sf`, for violation pointers.
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* @param violations — sink for JSDoc-completeness violations.
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* @returns the resolved service classes, in Context-declaration order.
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*/
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export function serviceClasses(
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body: ts.ModuleBlock,
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sf: ts.SourceFile,
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rel: string,
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violations: string[],
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): ServiceClass[] {
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const text = sf.getFullText()
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const out: ServiceClass[] = []
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for (const [key, type] of contextKeyMap(body, sf)) {
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const cls = sf.statements.find(
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(s): s is ts.ClassDeclaration => ts.isClassDeclaration(s) && s.name?.text === type,
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)
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if (!cls) continue // a Pick-mixin member, not a class here
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const abstract = cls.modifiers?.some(m => m.kind === ts.SyntaxKind.AbstractKeyword) ?? false
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const doc = parseJsDoc(rawJsDoc(text, cls)).doc
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if (!doc) violations.push(`service ctx.${key} (${pointer(rel, sf, cls)}): class ${type} has no JSDoc.`)
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out.push({ key, type, cls, abstract, doc })
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}
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return out
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}
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