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Merge pull request #525 from ruby/katei/npm-jco
Add `RubyVM.instantiateComponent` and `RubyVM.instantiateModule`
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| import * as preview2Shim from "@bytecodealliance/preview2-shim" | ||
| import * as nodeWasi from "wasi"; | ||
| import fs from "fs/promises"; | ||
| import path from "path"; | ||
| import { RubyVM } from "@ruby/wasm-wasi"; | ||
| import * as readline from 'node:readline/promises'; | ||
| import { stdin as input, stdout as output } from 'node:process'; | ||
| import { parseArgs } from "node:util" | ||
|
|
||
| async function instantiateComponent(pkgPath) { | ||
| const componentJsPath = path.resolve(pkgPath, "dist/component/ruby.component.js"); | ||
| const { instantiate } = await import(componentJsPath); | ||
| const getCoreModule = async (relativePath) => { | ||
| const coreModulePath = path.resolve(pkgPath, "dist/component", relativePath); | ||
| const buffer = await fs.readFile(coreModulePath); | ||
| return WebAssembly.compile(buffer); | ||
| } | ||
| const { cli, filesystem } = preview2Shim; | ||
| cli._setArgs(["ruby.wasm"].concat(process.argv.slice(2))); | ||
| cli._setCwd("/") | ||
| filesystem._setPreopens({}) | ||
|
|
||
| const { vm } = await RubyVM.instantiateComponent({ | ||
| instantiate, getCoreModule, wasip2: preview2Shim, | ||
| }); | ||
| return vm; | ||
| } | ||
|
|
||
| async function instantiateModule(pkgPath) { | ||
| const binaryPath = path.resolve(pkgPath, "dist/ruby.debug+stdlib.wasm"); | ||
| const binary = await fs.readFile(binaryPath); | ||
| const rubyModule = await WebAssembly.compile(binary); | ||
| const wasi = new nodeWasi.WASI({ | ||
| stdio: "inherit", | ||
| args: ["ruby.wasm"].concat(process.argv.slice(2)), | ||
| env: process.env, | ||
| version: "preview1", | ||
| }); | ||
|
|
||
| const { vm } = await RubyVM.instantiateModule({ | ||
| module: rubyModule, wasip1: wasi | ||
| }) | ||
| return vm; | ||
| }; | ||
|
|
||
| function parseOptions(args) { | ||
| /** @type {import("util").ParseArgsConfig["options"]} */ | ||
| const options = { | ||
| pkg: { | ||
| type: "string", | ||
| short: "p", | ||
| default: (() => { | ||
| const dirname = path.dirname(new URL(import.meta.url).pathname); | ||
| return path.resolve(dirname, "../packages/npm-packages/ruby-head-wasm-wasi"); | ||
| })() | ||
| }, | ||
| type: { | ||
| type: "string", | ||
| short: "t", | ||
| default: "component", | ||
| }, | ||
| help: { | ||
| type: "boolean", | ||
| short: "h", | ||
| }, | ||
| } | ||
| const { values } = parseArgs({ args, options }); | ||
| return values; | ||
| } | ||
|
|
||
| function printUsage() { | ||
| console.log("Usage: repl.mjs [--pkg <npm-package-path>] [--type <component|module>]"); | ||
| } | ||
|
|
||
| async function main() { | ||
| const args = parseOptions(process.argv.slice(2)); | ||
| if (args["help"]) { | ||
| printUsage(); | ||
| return; | ||
| } | ||
| const pkgPath = args["pkg"]; | ||
| const vm = await (async () => { | ||
| switch (args["type"]) { | ||
| case "component": { | ||
| console.log(`Loading component from ${pkgPath}`); | ||
| return await instantiateComponent(pkgPath); | ||
| } | ||
| case "module": { | ||
| console.log(`Loading core module from ${pkgPath}`); | ||
| return await instantiateModule(pkgPath); | ||
| } | ||
| default: | ||
| throw new Error(`Unknown type: ${args["type"]}`); | ||
| } | ||
| })(); | ||
| const rl = readline.createInterface({ input, output }); | ||
|
|
||
| vm.eval(`puts RUBY_DESCRIPTION`); | ||
|
|
||
| const printer = vm.eval(` | ||
| class ReplPrinter | ||
| def puts(*args) | ||
| args.each do |arg| | ||
| Kernel.puts(arg) | ||
| end | ||
| end | ||
| end | ||
| ReplPrinter.new | ||
| `); | ||
| while (true) { | ||
| const line = await rl.question(`>> `); | ||
| try { | ||
| const result = vm.eval(line); | ||
| printer.call("puts", result); | ||
| } catch (e) { | ||
| console.error(e); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| main().catch(console.error); |
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