derw
Version:
An Elm-inspired language that transpiles to TypeScript
352 lines (351 loc) • 15.6 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
var ownKeys = function(o) {
ownKeys = Object.getOwnPropertyNames || function (o) {
var ar = [];
for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
return ar;
};
return ownKeys(o);
};
return function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
__setModuleDefault(result, mod);
return result;
};
})();
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.compileFiles = compileFiles;
const baner_1 = require("@eeue56/baner");
const child_process_1 = require("child_process");
const chokidar = __importStar(require("chokidar"));
const fs_1 = require("fs");
const promises_1 = require("fs/promises");
const path_1 = __importDefault(require("path"));
const util = __importStar(require("util"));
const Generator_1 = require("../Generator");
const names_1 = require("../errors/names");
const derwParser = __importStar(require("../parser"));
const types_1 = require("../types");
const install_1 = require("./install");
const utils_1 = require("./utils");
const compileParser = (0, baner_1.parser)([
(0, baner_1.longFlag)("files", "File names or folders to be compiled", (0, baner_1.variableList)((0, baner_1.string)())),
(0, baner_1.longFlag)("target", "Target TS, JS, Derw, Elm, or English output", (0, baner_1.oneOf)(["ts", "js", "derw", "elm", "english"])),
(0, baner_1.longFlag)("output", "Output directory name", (0, baner_1.string)()),
(0, baner_1.longFlag)("verify", "Run typescript compiler on generated files to ensure valid output", (0, baner_1.empty)()),
(0, baner_1.longFlag)("debug", "Show a parsed object tree", (0, baner_1.empty)()),
(0, baner_1.longFlag)("only", "Only show a particular object", (0, baner_1.string)()),
(0, baner_1.longFlag)("run", "Should be run via ts-node/node", (0, baner_1.empty)()),
(0, baner_1.longFlag)("names", "Check for missing names out of scope", (0, baner_1.empty)()),
(0, baner_1.longFlag)("check", "Only run typechecking, not file generation", (0, baner_1.empty)()),
(0, baner_1.longFlag)("watch", "Watch the files for changes", (0, baner_1.empty)()),
(0, baner_1.longFlag)("quiet", "Keep it short and sweet", (0, baner_1.empty)()),
(0, baner_1.bothFlag)("h", "help", "This help text", (0, baner_1.empty)()),
]);
function showCompileHelp() {
console.log("Let's write some Derw code");
console.log("To get started:");
console.log("Initialize the current directory via `init`");
console.log("Or provide entry files via `--files`");
console.log("Or run me without args inside a package directory");
console.log((0, baner_1.help)(compileParser));
}
function getImports(module) {
return module.body.filter((block) => block.kind === "Import");
}
function runFile(target, fullName) {
let child;
switch (target) {
case "js": {
child = (0, child_process_1.spawnSync)(`npx`, [`node`, `${fullName}`], {
stdio: "inherit",
encoding: "utf-8",
});
break;
}
case "ts": {
child = (0, child_process_1.spawnSync)(`npx`, [`ts-node`, `${fullName}`], {
stdio: "inherit",
encoding: "utf-8",
});
break;
}
}
}
function filterBodyForName(module, name) {
const blocks = [];
for (var element of module.body) {
switch (element.kind) {
case "Function":
case "Const": {
if (element.name === name) {
blocks.push(element);
}
break;
}
case "Import": {
for (var module_ of element.modules) {
if (module_.name === name) {
blocks.push(element);
break;
}
}
break;
}
case "UnionType":
case "TypeAlias": {
if (element.type.name === name) {
blocks.push(element);
}
break;
}
}
}
return blocks;
}
async function compileFiles(isInPackageDirectory, argv) {
const program = (0, baner_1.parse)(compileParser, argv);
if (program.flags["h/help"].isPresent) {
showCompileHelp();
return {};
}
const errors = (0, baner_1.allErrors)(program);
if (errors.length > 0) {
console.log("Errors:");
console.log(errors.join("\n"));
process.exit(1);
}
if (!program.flags.files.isPresent && !isInPackageDirectory) {
console.log("You must provide at least one file via --files");
console.log("Or be in a directory with derw-package.json.");
process.exit(1);
}
const doesDerwPackagesFolderExist = await (0, utils_1.fileExists)("derw-packages");
if (!program.flags.files.isPresent && !doesDerwPackagesFolderExist) {
console.log("No derw-packages folder found, running install...");
await (0, install_1.install)(isInPackageDirectory, argv);
}
const debugMode = program.flags["debug"].isPresent;
const isPackageDirectoryAndNoFilesPassed = isInPackageDirectory && !program.flags.files.isPresent;
const maybeFiles = isPackageDirectoryAndNoFilesPassed
? await (0, utils_1.getDerwFiles)("./src")
: await (0, utils_1.getFlatFiles)(program.flags.files.arguments.value);
if (maybeFiles.kind === "Err") {
const filesToFind = isPackageDirectoryAndNoFilesPassed
? ["./src"]
: program.flags.files.arguments.value;
for (const file of filesToFind) {
const suggestion = await (0, utils_1.suggestFileNames)(file);
if (suggestion !== file) {
console.error(suggestion);
}
}
process.exit(1);
}
const files = maybeFiles.value;
const outputDir = program.flags.output.isPresent
? program.flags.output.arguments.value
: "./";
const isStdout = outputDir === "/dev/stdout";
const isCheck = outputDir === "/dev/null" || program.flags.check.isPresent;
if (!isStdout && !isCheck) {
await (0, utils_1.ensureDirectoryExists)(outputDir);
}
const target = program.flags.target.isPresent
? program.flags.target.arguments.value
: "ts";
const shouldRun = program.flags.run.isPresent;
if (shouldRun && !program.flags.files.isPresent) {
console.log(`Warning: not running files. Provide files via --files to run them`);
}
const isQuiet = program.flags.quiet.isPresent;
if (!isQuiet) {
if (isInPackageDirectory) {
console.log("Compiling package...");
}
console.log(`Generating ${files.length} files...`);
}
async function rawCompile() {
const processedFiles = [];
const parsedFiles = {};
const parsedImports = {};
for (const fileName of files) {
await (async function compile(fileName) {
if (processedFiles.indexOf(fileName) > -1) {
return;
}
const isPackageFile = fileName.startsWith("derw-packages");
processedFiles.push(fileName);
const dotParts = fileName.split(".");
const extension = dotParts[dotParts.length - 1];
if (extension !== "derw") {
console.log("Warning: Derw files should be called .derw");
console.log(`Try renaming ${fileName} to ${dotParts.slice(0, -1).join(".")}.derw`);
}
const derwContents = (await fs_1.promises.readFile(fileName)).toString();
let parsed = derwParser.parseWithContext(derwContents, fileName);
if (program.flags.names.isPresent) {
parsed = (0, names_1.addMissingNamesSuggestions)(parsed);
}
parsedFiles[fileName] = parsed;
if (parsed.errors.length > 0) {
console.log(`Failed to parse ${fileName} due to:`);
console.log(parsed.errors.join("\n"));
return;
}
const dir = path_1.default.dirname(fileName);
const imports = [];
getImports(parsed).forEach((import_) => {
import_ = import_;
import_.modules.forEach((module) => {
if (module.namespace === "Global")
return;
if (isPackageFile) {
if (module.name.startsWith('"../derw-packages')) {
module.name = module.name.replace("../derw-packages", "../../..");
}
}
const moduleName = module.name.slice(1, -1);
imports.push(path_1.default.normalize(path_1.default.join(dir, moduleName)));
});
});
parsedImports[fileName] = [];
for (const import_ of imports) {
const fileWithDerwExtension = import_.endsWith(".derw")
? import_
: import_ + `.derw`;
const isDerw = await (0, utils_1.fileExists)(fileWithDerwExtension);
if (isDerw) {
parsedImports[fileName].push(fileWithDerwExtension);
await compile(fileWithDerwExtension);
continue;
}
// check if ts/js versions of the file exist
const fileWithTsExtension = import_ + `.ts`;
const fileWithJsExtension = import_ + `.js`;
let doesFileExist = false;
if (await (0, utils_1.fileExists)(fileWithTsExtension)) {
doesFileExist = true;
}
else if (await (0, utils_1.fileExists)(fileWithJsExtension)) {
doesFileExist = true;
}
if (!doesFileExist) {
console.log(`Warning! Failed to find \`${import_}\` as either derw, ts or js`);
}
}
if (debugMode) {
if (program.flags["only"].isPresent) {
if (program.flags["only"].arguments.kind === "Err") {
console.log(program.flags.only.arguments.error);
}
else {
const name = program.flags["only"].arguments.value;
const blocks = filterBodyForName(parsed, name);
console.log(`Filtering for ${name}...`);
console.log(util.inspect(blocks, true, null, true));
}
return;
}
console.log(util.inspect(parsed, true, null, true));
return;
}
const importedContextModules = [];
for (const import_ of parsedImports[fileName]) {
importedContextModules.push(parsedFiles[import_]);
}
parsed = derwParser.addTypeErrors(parsed, importedContextModules);
if (parsed.errors.length > 0) {
console.log(`Failed to parse ${fileName} due to:`);
console.log(parsed.errors.join("\n"));
return;
}
const generated = (0, Generator_1.generate)(target, (0, types_1.contextModuleToModule)(parsed));
if (program.flags.verify.isPresent && target === "ts") {
const { compileTypescript } = await Promise.resolve().then(() => __importStar(require("../compile")));
const output = compileTypescript(generated);
if (output.kind === "Err") {
console.log(`Failed to compile ${fileName} due to`, output.error.map((e) => e.messageText).join("\n"));
}
else {
console.log(`Successfully compiled ${fileName}`);
}
}
if (isCheck) {
return;
}
if (isStdout) {
console.log(generated);
return;
}
if (fileName.indexOf("/") > -1) {
const dirName = fileName.split("/").slice(0, -1).join("/");
await (0, utils_1.ensureDirectoryExists)(path_1.default.join(outputDir, dirName));
}
const outputName = dotParts.slice(0, -1).join(".") + "." + target;
const fullName = path_1.default.join(outputDir, outputName);
await (0, promises_1.writeFile)(fullName, generated);
if (shouldRun) {
const isFileToRun = program.flags.files.isPresent &&
program.flags.files.arguments.kind === "Ok" &&
program.flags.files.arguments.value.indexOf(fileName) > -1;
if (isFileToRun) {
if (!isQuiet)
console.log(`Running... ${fullName}`);
runFile(target, fullName);
}
}
})(fileName);
}
if (!isQuiet) {
console.log("Processed:", processedFiles);
}
return parsedFiles;
}
if (program.flags.watch.isPresent) {
if (!isQuiet)
console.log("Watching src and derw-packages...");
let timer;
chokidar
.watch([
path_1.default.join(process.cwd(), "src"),
path_1.default.join(process.cwd(), "derw-packages"),
])
.on("all", async (event, path) => {
if (path.endsWith(".derw")) {
if (timer !== null) {
clearTimeout(timer);
}
timer = setTimeout(async () => {
await rawCompile();
}, 300);
}
});
return {};
}
else {
return await rawCompile();
}
}