mirror of
https://github.com/fluencelabs/assemblyscript
synced 2025-04-25 07:02:13 +00:00
687 lines
20 KiB
JavaScript
687 lines
20 KiB
JavaScript
//////////////////////// Compiler frontend for node.js /////////////////////////
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const fs = require("fs");
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const path = require("path");
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const os = require("os");
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// Use distribution files if present, otherwise run the sources directly
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var assemblyscript, isDev;
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try {
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assemblyscript = require("../dist/assemblyscript.js");
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isDev = false;
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try { require("source-map-support").install(); } catch (e) {} // optional
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} catch (e) {
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try {
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require("ts-node").register({
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project: path.join(__dirname, "..", "src", "tsconfig.json")
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});
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require("../src/glue/js");
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assemblyscript = require("../src");
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isDev = true;
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} catch (e) {
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// last resort: browser bundle under node (relative to 'dist/')
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assemblyscript = require("./assemblyscript");
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isDev = false;
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}
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}
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/** Whether this is a webpack bundle or not. */
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exports.isBundle = typeof BUNDLE_VERSION === "string";
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/** Whether asc runs the sources directly or not. */
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exports.isDev = isDev;
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/** AssemblyScript veresion. */
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exports.version = exports.isBundle ? BUNDLE_VERSION
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: require("../package.json").version;
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/** Available options. */
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exports.options = require("./asc.json");
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/** Common root used in source maps. */
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exports.sourceMapRoot = "assemblyscript:///";
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/** Prefix used for library files. */
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exports.libraryPrefix = assemblyscript.LIBRARY_PREFIX;
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/** Default Binaryen optimization level. */
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exports.defaultOptimizeLevel = 2;
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/** Default Binaryen shrink level. */
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exports.defaultShrinkLevel = 1;
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/** Bundled library files, if any. */
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exports.libraryFiles = exports.isBundle ? BUNDLE_LIBRARY : {};
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/** Bundled definition files, if any. */
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exports.definitionFiles = exports.isBundle ? BUNDLE_DEFINITIONS : {};
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/** Runs the command line utility using the specified arguments array. */
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exports.main = function main(argv, options, callback) {
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if (typeof options === "function") {
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callback = options;
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options = {};
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} else if (!options)
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options = {};
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const stdout = options.stdout || process.stdout;
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const stderr = options.stderr || process.stderr;
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const readFile = options.readFile || readFileNode;
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const writeFile = options.writeFile || writeFileNode;
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const listFiles = options.listFiles || listFilesNode;
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const stats = options.stats || createStats();
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// All of the above must be specified in browser environments
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if (!stdout)
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throw Error("'options.stdout' must be specified");
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if (!stderr)
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throw Error("'options.stderr' must be specified");
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if (!fs.readFileSync) {
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if (readFile === readFileNode)
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throw Error("'options.readFile' must be specified");
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if (writeFile === writeFileNode)
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throw Error("'options.writeFile' must be specified");
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if (listFiles === listFilesNode)
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throw Error("'options.listFiles' must be specified");
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}
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const args = parseArguments(argv);
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const indent = 24;
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// Use default callback if none is provided
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if (!callback) callback = function defaultCallback(err) {
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var code = 0;
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if (err) {
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stderr.write(err.stack + os.EOL);
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code = 1;
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}
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return code;
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};
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// Just print the version if requested
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if (args.version) {
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stdout.write("Version " + exports.version + (isDev ? "-dev" : "") + os.EOL);
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return callback(null);
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}
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// Print the help message if requested or no source files are provided
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if (args.help || args._.length < 1) {
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const opts = [];
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Object.keys(exports.options).forEach(name => {
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var option = exports.options[name];
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var text = " ";
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text += "--" + name;
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if (option.aliases && option.aliases[0].length === 1)
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text += ", -" + option.aliases[0];
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while (text.length < indent)
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text += " ";
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if (Array.isArray(option.desc)) {
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opts.push(text + option.desc[0] + option.desc.slice(1).map(line => {
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for (let i = 0; i < indent; ++i)
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line = " " + line;
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return os.EOL + line;
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}).join(""));
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} else
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opts.push(text + option.desc);
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});
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(args.help ? stdout : stderr).write([
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"Version " + exports.version + (isDev ? "-dev" : ""),
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"Syntax: asc [entryFile ...] [options]",
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"",
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"Examples: asc hello.ts",
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" asc hello.ts -b hello.wasm -t hello.wat",
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" asc hello1.ts hello2.ts -b -O > hello.wasm",
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"",
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"Options:"
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].concat(opts).join(os.EOL) + os.EOL);
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return callback(null);
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}
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// Set up base directory
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const baseDir = args.baseDir ? path.resolve(args.baseDir) : process.cwd();
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// Include standard library if --noLib isn't set
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const stdLibDir = path.join(__dirname, "..", "std", "assembly");
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const libDirs = args.noLib ? [] : [ stdLibDir ];
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// Include custom library components (with or without stdlib)
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if (args.lib) {
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if (typeof args.lib === "string")
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args.lib = args.lib.split(",");
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Array.prototype.push.apply(libDirs, args.lib.map(trim));
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}
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// Begin parsing
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var parser = null;
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// Include entry files
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for (let i = 0, k = args._.length; i < k; ++i) {
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const filename = args._[i];
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let sourcePath = filename.replace(/\\/g, "/").replace(/(\.ts|\/)$/, "");
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// Try entryPath.ts, then entryPath/index.ts
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let sourceText = readFile(path.join(baseDir, sourcePath) + ".ts");
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if (sourceText === null) {
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sourceText = readFile(path.join(baseDir, sourcePath, "index.ts"));
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if (sourceText === null)
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return callback(Error("Entry file '" + sourcePath + ".ts' not found."));
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else
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sourcePath += "/index.ts";
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} else
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sourcePath += ".ts";
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stats.parseCount++;
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stats.parseTime += measure(() => {
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parser = assemblyscript.parseFile(sourceText, sourcePath, true, parser);
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});
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while ((sourcePath = parser.nextFile()) != null) {
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let found = false;
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// Load library file if explicitly requested
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if (sourcePath.startsWith(exports.libraryPrefix)) {
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for (let i = 0, k = libDirs.length; i < k; ++i) {
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if (exports.libraryFiles.hasOwnProperty(sourcePath))
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sourceText = exports.libraryFiles[sourcePath];
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else {
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sourceText = readFile(path.join(
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libDirs[i],
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sourcePath.substring(exports.libraryPrefix.length) + ".ts")
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);
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if (sourceText !== null) {
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sourcePath += ".ts";
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break;
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}
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}
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}
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// Otherwise try nextFile.ts, nextFile/index.ts, (lib)/nextFile.ts
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} else {
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sourceText = readFile(path.join(baseDir, sourcePath + ".ts"));
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if (sourceText === null) {
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sourceText = readFile(path.join(baseDir, sourcePath, "index.ts"));
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if (sourceText === null) {
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for (let i = 0, k = libDirs.length; i < k; ++i) {
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const dir = libDirs[i];
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const key = exports.libraryPrefix + sourcePath;
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if (exports.libraryFiles.hasOwnProperty(key))
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sourceText = exports.libraryFiles[key];
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else {
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sourceText = readFile(path.join(dir, sourcePath + ".ts"));
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if (sourceText !== null) {
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sourcePath = exports.libraryPrefix + sourcePath + ".ts";
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break;
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}
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}
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}
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if (sourceText === null)
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return callback(
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Error("Import file '" + sourcePath + ".ts' not found.")
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);
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} else
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sourcePath += "/index.ts";
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} else
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sourcePath += ".ts";
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}
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stats.parseCount++;
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stats.parseTime += measure(() => {
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assemblyscript.parseFile(sourceText, sourcePath, false, parser);
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});
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}
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if (checkDiagnostics(parser, stderr))
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return callback(Error("Parse error"));
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}
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// Include (other) library components
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var hasBundledLibrary = false;
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if (!args.noLib)
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Object.keys(exports.libraryFiles).forEach(libPath => {
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if (libPath.lastIndexOf("/") >= exports.libraryPrefix.length)
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return;
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stats.parseCount++;
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stats.parseTime += measure(() => {
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parser = assemblyscript.parseFile(
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exports.libraryFiles[libPath],
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libPath + ".ts",
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false,
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parser
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);
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});
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hasBundledLibrary = true;
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});
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for (let i = 0, k = libDirs.length; i < k; ++i) {
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if (i === 0 && hasBundledLibrary) continue;
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let libDir = libDirs[i];
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let libFiles = listFiles(libDir);
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for (let j = 0, l = libFiles.length; j < l; ++j) {
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let libPath = libFiles[j];
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let libText = readFile(path.join(libDir, libPath));
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if (libText === null)
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return callback(Error("Library file '" + libPath + "' not found."));
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stats.parseCount++;
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stats.parseTime += measure(() => {
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parser = assemblyscript.parseFile(
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libText,
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exports.libraryPrefix + libPath,
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false,
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parser
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);
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});
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}
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}
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// Begin compilation
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const compilerOptions = assemblyscript.createOptions();
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assemblyscript.setTarget(compilerOptions, 0);
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assemblyscript.setNoTreeShaking(compilerOptions, !!args.noTreeShaking);
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assemblyscript.setNoAssert(compilerOptions, !!args.noAssert);
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assemblyscript.setNoMemory(compilerOptions, !!args.noMemory);
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assemblyscript.setMemoryBase(compilerOptions, args.memoryBase >>> 0);
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assemblyscript.setSourceMap(compilerOptions, args.sourceMap != null);
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var module;
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stats.compileCount++;
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try {
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stats.compileTime += measure(() => {
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module = assemblyscript.compile(parser, compilerOptions);
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});
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} catch (e) {
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return callback(e);
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}
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if (checkDiagnostics(parser, stderr)) {
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if (module) module.dispose();
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return callback(Error("Compile error"));
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}
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// Validate the module if requested
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if (args.validate) {
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stats.validateCount++;
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stats.validateTime += measure(() => {
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if (!module.validate()) {
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module.dispose();
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return callback(Error("Validate error"));
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}
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});
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}
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// Set Binaryen-specific options
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if (args.trapMode === "clamp") {
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stats.optimizeCount++;
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stats.optimizeTime += measure(() => {
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module.runPasses([ "trap-mode-clamp" ]);
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});
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} else if (args.trapMode === "js") {
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stats.optimizeCount++;
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stats.optimizeTime += measure(() => {
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module.runPasses([ "trap-mode-js" ]);
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});
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} else if (args.trapMode !== "allow") {
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module.dispose();
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return callback(Error("Unsupported trap mode"));
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}
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var optimizeLevel = -1;
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var shrinkLevel = 0;
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var debugInfo = !args.noDebug;
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if (args.optimize !== false) {
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if (typeof args.optimize === "number")
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optimizeLevel = args.optimize;
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else if (args["0"])
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optimizeLevel = 0;
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else if (args["1"])
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optimizeLevel = 1;
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else if (args["2"])
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optimizeLevel = 2;
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else if (args["3"])
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optimizeLevel = 3;
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else if (args.optimize === true) {
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optimizeLevel = exports.defaultOptimizeLevel;
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shrinkLevel = exports.defaultShrinkLevel;
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} else
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optimizeLevel = 0;
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}
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if (args["s"])
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shrinkLevel = 1;
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else if (args["z"])
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shrinkLevel = 2;
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if (typeof args.optimizeLevel === "number")
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optimizeLevel = args.optimizeLevel;
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if (typeof args.shrinkLevel === "number")
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shrinkLevel = args.shrinkLevel;
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else if (args.shrinkLevel === "s")
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shrinkLevel = 1;
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else if (args.shrinkLevel === "z")
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shrinkLevel = 2;
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module.setOptimizeLevel(optimizeLevel > 0 ? optimizeLevel : 0);
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module.setShrinkLevel(shrinkLevel);
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module.setDebugInfo(debugInfo);
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var runPasses = [];
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if (args.runPasses) {
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if (typeof args.runPasses === "string")
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args.runPasses = args.runPasses.split(",");
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if (args.runPasses.length)
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args.runPasses.forEach(pass => {
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if (runPasses.indexOf(pass) < 0)
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runPasses.push(pass);
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});
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}
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// Optimize the module if requested
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if (optimizeLevel >= 0) {
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stats.optimizeCount++;
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stats.optimizeTime += measure(() => {
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module.optimize();
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});
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}
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// Run additional passes if requested
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if (runPasses.length) {
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stats.optimizeCount++;
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stats.optimizeTime += measure(() => {
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module.runPasses(runPasses.map(pass => pass.trim()));
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});
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}
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// Prepare output
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if (!args.noEmit) {
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let hasStdout = false;
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if (args.outFile != null) {
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if (/\.was?t$/.test(args.outFile) && args.textFile == null)
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args.textFile = args.outFile;
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else if (/\.js$/.test(args.outFile) && args.asmjsFile == null)
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args.asmjsFile = args.outFile;
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else if (args.binaryFile == null)
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args.binaryFile = args.outFile;
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}
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// Write binary
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if (args.binaryFile != null) {
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let sourceMapURL = args.sourceMap != null
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? args.sourceMap.length
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? args.sourceMap
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: path.basename(args.binaryFile) + ".map"
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: null;
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let binary;
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stats.emitCount++;
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stats.emitTime += measure(() => {
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binary = module.toBinary(sourceMapURL)
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});
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if (args.binaryFile.length) {
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writeFile(path.join(baseDir, args.binaryFile), binary.output);
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} else {
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writeStdout(binary.output);
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hasStdout = true;
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}
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// Post-process source map
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if (binary.sourceMap != null) {
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if (args.binaryFile.length) {
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let sourceMap = JSON.parse(binary.sourceMap);
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sourceMap.sourceRoot = exports.sourceMapRoot;
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sourceMap.sources.forEach((name, index) => {
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let text = null;
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if (name.startsWith(exports.libraryPrefix)) {
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for (let i = 0, k = libDirs.length; i < k; ++i) {
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text = readFile(path.join(
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libDirs[i],
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name.substring(exports.libraryPrefix.length))
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);
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if (text !== null) break;
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}
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} else
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text = readFile(path.join(baseDir, name));
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if (text === null)
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return callback(Error("Source file '" + name + "' not found."));
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if (!sourceMap.sourceContents)
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sourceMap.sourceContents = [];
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sourceMap.sourceContents[index] = text;
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});
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writeFile(path.join(
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baseDir,
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path.dirname(args.binaryFile),
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path.basename(sourceMapURL)
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), JSON.stringify(sourceMap));
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} else {
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stderr.write("Skipped source map (stdout already occupied)" + os.EOL);
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}
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}
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}
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// Write text
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if (
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args.textFile != null || (
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args.binaryFile == null &&
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args.asmjsFile == null
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)
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) {
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let text;
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if (args.textFile && args.textFile.length) {
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stats.emitCount++;
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stats.emitTime += measure(() => {
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text = module.toText();
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});
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writeFile(path.join(baseDir, args.textFile), text);
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} else if (!hasStdout) {
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stats.emitCount++;
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stats.emitTime += measure(() => {
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text = module.toText()
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});
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writeStdout(text);
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hasStdout = true;
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}
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}
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// Write asm.js
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if (args.asmjsFile != null) {
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let asm;
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if (args.asmjsFile.length) {
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stats.emitCount++;
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stats.emitTime += measure(() => {
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asm = module.toAsmjs();
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});
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writeFile(path.join(baseDir, args.asmjsFile), asm);
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} else if (!hasStdout) {
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stats.emitCount++;
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stats.emitTime += measure(() => {
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asm = module.toAsmjs();
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});
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writeStdout(asm);
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hasStdout = true;
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}
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}
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}
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module.dispose();
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if (args.measure)
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printStats(stats, stderr);
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return callback(null);
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function readFileNode(filename) {
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try {
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var text;
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stats.readCount++;
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stats.readTime += measure(() => {
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text = fs.readFileSync(filename, { encoding: "utf8" });
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});
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return text;
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} catch (e) {
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return null;
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}
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}
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function writeFileNode(filename, contents) {
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try {
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stats.writeCount++;
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stats.writeTime += measure(() => {
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if (typeof contents === "string")
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fs.writeFileSync(filename, contents, { encoding: "utf8" } );
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else
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fs.writeFileSync(filename, contents);
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});
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return true;
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} catch (e) {
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return false;
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}
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}
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function listFilesNode(dirname) {
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var files;
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try {
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stats.readTime += measure(() => {
|
|
files = require("glob").sync("*.ts", { cwd: dirname });
|
|
});
|
|
return files;
|
|
} catch (e) {
|
|
return [];
|
|
}
|
|
}
|
|
|
|
function writeStdout(contents) {
|
|
if (!writeStdout.used) {
|
|
stats.writeCount++;
|
|
writeStdout.used = true;
|
|
}
|
|
stats.writeTime += measure(() => {
|
|
if (typeof contents === "string")
|
|
stdout.write(contents, { encoding: "utf8" });
|
|
else
|
|
stdout.write(contents);
|
|
});
|
|
}
|
|
}
|
|
|
|
/** Parses the specified command line arguments. */
|
|
function parseArguments(argv) {
|
|
const opts = {};
|
|
Object.keys(exports.options).forEach(key => {
|
|
const opt = exports.options[key];
|
|
if (opt.aliases)
|
|
(opts.alias || (opts.alias = {}))[key] = opt.aliases;
|
|
if (opt.default !== undefined)
|
|
(opts.default || (opts.default = {}))[key] = opt.default;
|
|
if (opt.type === "string")
|
|
(opts.string || (opts.string = [])).push(key);
|
|
else if (opt.type === "boolean")
|
|
(opts.boolean || (opts.boolean = [])).push(key);
|
|
});
|
|
return require("minimist")(argv, opts);
|
|
}
|
|
|
|
exports.parseArguments = parseArguments;
|
|
|
|
/** Checks diagnostics emitted so far for errors. */
|
|
function checkDiagnostics(emitter, stderr) {
|
|
var diagnostic;
|
|
var hasErrors = false;
|
|
while ((diagnostic = assemblyscript.nextDiagnostic(emitter)) != null) {
|
|
stderr.write(
|
|
assemblyscript.formatDiagnostic(diagnostic, stderr.isTTY, true) +
|
|
os.EOL + os.EOL
|
|
);
|
|
if (assemblyscript.isError(diagnostic))
|
|
hasErrors = true;
|
|
}
|
|
return hasErrors;
|
|
}
|
|
|
|
exports.checkDiagnostics = checkDiagnostics;
|
|
|
|
/** Creates an empty set of stats. */
|
|
function createStats() {
|
|
return {
|
|
readTime: 0,
|
|
readCount: 0,
|
|
writeTime: 0,
|
|
writeCount: 0,
|
|
parseTime: 0,
|
|
parseCount: 0,
|
|
compileTime: 0,
|
|
compileCount: 0,
|
|
emitTime: 0,
|
|
emitCount: 0,
|
|
validateTime: 0,
|
|
validateCount: 0,
|
|
optimizeTime: 0,
|
|
optimizeCount: 0
|
|
};
|
|
}
|
|
|
|
exports.createStats = createStats;
|
|
|
|
if (!process.hrtime)
|
|
process.hrtime = require("browser-process-hrtime");
|
|
|
|
/** Measures the execution time of the specified function. */
|
|
function measure(fn) {
|
|
const start = process.hrtime();
|
|
fn();
|
|
const times = process.hrtime(start);
|
|
return times[0] * 1e9 + times[1];
|
|
}
|
|
|
|
exports.measure = measure;
|
|
|
|
/** Formats and prints out the contents of a set of stats. */
|
|
function printStats(stats, output) {
|
|
function format(time, count) {
|
|
return time ? (time / 1e6).toFixed(3) + " ms" : "N/A";
|
|
}
|
|
(output || process.stdout).write([
|
|
"I/O Read : " + format(stats.readTime, stats.readCount),
|
|
"I/O Write : " + format(stats.writeTime, stats.writeCount),
|
|
"Parse : " + format(stats.parseTime, stats.parseCount),
|
|
"Compile : " + format(stats.compileTime, stats.compileCount),
|
|
"Emit : " + format(stats.emitTime, stats.emitCount),
|
|
"Validate : " + format(stats.validateTime, stats.validateCount),
|
|
"Optimize : " + format(stats.optimizeTime, stats.optimizeCount)
|
|
].join(os.EOL) + os.EOL);
|
|
}
|
|
|
|
exports.printStats = printStats;
|
|
|
|
/** Creates a memory stream that can be used in place of stdout/stderr. */
|
|
function createMemoryStream(fn) {
|
|
var stream = [];
|
|
stream.write = function(chunk) {
|
|
if (typeof chunk === "string") {
|
|
this.push(Buffer.from(chunk, "utf8"));
|
|
} else {
|
|
this.push(chunk);
|
|
}
|
|
if (fn) fn(chunk);
|
|
};
|
|
stream.toBuffer = function() {
|
|
return Buffer.concat(this);
|
|
};
|
|
stream.toString = function() {
|
|
return this.toBuffer().toString("utf8");
|
|
};
|
|
return stream;
|
|
}
|
|
|
|
exports.createMemoryStream = createMemoryStream;
|
|
|
|
/** Compatible TypeScript compiler options. */
|
|
exports.tscOptions = {
|
|
alwaysStrict: true,
|
|
noImplicitAny: true,
|
|
noImplicitReturns: true,
|
|
noImplicitThis: true,
|
|
noEmitOnError: true,
|
|
strictNullChecks: true,
|
|
experimentalDecorators: true,
|
|
target: "esnext",
|
|
module: "commonjs",
|
|
noLib: true,
|
|
types: [],
|
|
allowJs: false
|
|
};
|