shrimp/vscode-extension/scripts/generate-prelude-metadata.ts
2025-11-24 12:19:58 -08:00

118 lines
3.4 KiB
TypeScript

#!/usr/bin/env bun
/**
* Generates prelude metadata for the VSCode extension.
* - Prelude names (for parser scope tracking)
* - Function signatures (for autocomplete)
*/
import { writeFileSync } from 'fs'
import { join } from 'path'
import { globals } from '../../src/prelude'
// Extract parameter names from a function
const extractParams = (fn: Function): string[] => {
const fnStr = fn.toString()
const match = fnStr.match(/\(([^)]*)\)/)
if (!match) return []
const paramsStr = match[1]!.trim()
if (!paramsStr) return []
// Split by comma, but be careful of default values with commas
const params: string[] = []
let current = ''
let inString = false
let stringChar = ''
for (let i = 0; i < paramsStr.length; i++) {
const char = paramsStr[i]
if ((char === '"' || char === "'") && (i === 0 || paramsStr[i - 1] !== '\\')) {
if (!inString) {
inString = true
stringChar = char
} else if (char === stringChar) {
inString = false
}
}
if (char === ',' && !inString) {
params.push(current.trim())
current = ''
} else {
current += char
}
}
if (current.trim()) params.push(current.trim())
return params
.map((p) => p.split(/[=:]/)[0]!.trim()) // Handle defaults and types
.filter((p) => p && p !== 'this')
}
// Generate metadata for a module
const generateModuleMetadata = (module: Record<string, any>) => {
const metadata: Record<string, { params: string[] }> = {}
for (const [name, value] of Object.entries(module)) {
if (typeof value === 'function') {
metadata[name] = { params: extractParams(value) }
}
}
return metadata
}
// Generate names list
const names = Object.keys(globals).sort()
// Generate module metadata
const moduleMetadata: Record<string, any> = {}
for (const [name, value] of Object.entries(globals)) {
if (typeof value === 'object' && value !== null && name !== '$') {
moduleMetadata[name] = generateModuleMetadata(value)
}
}
// Generate dollar metadata
const dollarMetadata: Record<string, { params: string[] }> = {}
if (globals.$ && typeof globals.$ === 'object') {
for (const key of Object.keys(globals.$)) {
dollarMetadata[key] = { params: [] }
}
}
// Write prelude-names.ts
const namesOutput = `// Auto-generated by scripts/generate-prelude-metadata.ts
// Do not edit manually - run 'bun run generate-prelude-metadata' to regenerate
export const PRELUDE_NAMES = ${JSON.stringify(names, null, 2)} as const
`
const namesPath = join(import.meta.dir, '../server/src/metadata/prelude-names.ts')
writeFileSync(namesPath, namesOutput)
// Write prelude-completions.ts
const completionsOutput = `// Auto-generated by scripts/generate-prelude-metadata.ts
// Do not edit manually - run 'bun run generate-prelude-metadata' to regenerate
export type CompletionMetadata = {
params: string[]
description?: string
}
export const completions = {
modules: ${JSON.stringify(moduleMetadata, null, 2)},
dollar: ${JSON.stringify(dollarMetadata, null, 2)},
} as const
`
const completionsPath = join(import.meta.dir, '../server/src/metadata/prelude-completions.ts')
writeFileSync(completionsPath, completionsOutput)
console.log(`✓ Generated ${names.length} prelude names to server/src/metadata/prelude-names.ts`)
console.log(
`✓ Generated completions for ${
Object.keys(moduleMetadata).length
} modules to server/src/metadata/prelude-completions.ts`
)