Linter Demo

Errors: 1

Warnings: 8

File: /home/fstrocco/Dart/dart/benchmark/compiler/lib/src/dart2js.dart

// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file // for details. All rights reserved. Use of this source code is governed by a // BSD-style license that can be found in the LICENSE file. library dart2js.cmdline; import 'dart:async' show Future, EventSink; import 'dart:convert' show UTF8, LineSplitter; import 'dart:io' show exit, File, FileMode, Platform, RandomAccessFile, FileSystemException, stdin, stderr; import '../compiler.dart' as api; import 'io/source_file.dart'; import 'source_file_provider.dart'; import 'filenames.dart'; import 'util/uri_extras.dart'; import 'util/util.dart' show stackTraceFilePrefix; import 'util/command_line.dart'; import 'package:_internal/libraries.dart'; const String LIBRARY_ROOT = '../../../../../sdk'; const String OUTPUT_LANGUAGE_DART = 'Dart'; /** * A string to identify the revision or build. * * This ID is displayed if the compiler crashes and in verbose mode, and is * an aid in reproducing bug reports. * * The actual string is rewritten by a wrapper script when included in the sdk. */ String BUILD_ID = null; /** * The data passed to the [HandleOption] callback is either a single * string argument, or the arguments iterator for multiple arguments * handlers. */ typedef void HandleOption(data); class OptionHandler { final String pattern; final HandleOption handle; final bool multipleArguments; OptionHandler(this.pattern, this.handle, {this.multipleArguments: false}); } /** * Extract the parameter of an option. * * For example, in ['--out=fisk.js'] and ['-ohest.js'], the parameters * are ['fisk.js'] and ['hest.js'], respectively. */ String extractParameter(String argument, {bool isOptionalArgument: false}) { // m[0] is the entire match (which will be equal to argument). m[1] // is something like "-o" or "--out=", and m[2] is the parameter. Match m = new RegExp('^(-[a-z]|--.+=)(.*)').firstMatch(argument); if (m == null) { if (isOptionalArgument) return null; helpAndFail('Unknown option "$argument".'); } return m[2]; } String extractPath(String argument) { String path = nativeToUriPath(extractParameter(argument)); return path.endsWith("/") ? path : "$path/"; } void parseCommandLine(List<OptionHandler> handlers, List<String> argv) { // TODO(ahe): Use ../../args/args.dart for parsing options instead. var patterns = <String>[]; for (OptionHandler handler in handlers) { patterns.add(handler.pattern); } var pattern = new RegExp('^(${patterns.join(")\$|^(")})\$'); Iterator<String> arguments = argv.iterator; OUTER: while (arguments.moveNext()) { String argument = arguments.current; Match match = pattern.firstMatch(argument); assert(match.groupCount == handlers.length); for (int i = 0; i < handlers.length; i++) { if (match[i + 1] != null) { OptionHandler handler = handlers[i]; if (handler.multipleArguments) { handler.handle(arguments); } else { handler.handle(argument); } continue OUTER; } } throw 'Internal error: "$argument" did not match'; } } FormattingDiagnosticHandler diagnosticHandler; Future<api.CompilationResult> compile(List<String> argv) { stackTraceFilePrefix = '$currentDirectory'; Uri libraryRoot = currentDirectory; Uri out = currentDirectory.resolve('out.js'); Uri sourceMapOut = currentDirectory.resolve('out.js.map'); Uri packageRoot = null; List<String> options = new List<String>(); bool explicitOut = false; bool wantHelp = false; bool wantVersion = false; String outputLanguage = 'JavaScript'; bool stripArgumentSet = false; bool analyzeOnly = false; bool analyzeAll = false; bool dumpInfo = false; bool allowNativeExtensions = false; bool trustTypeAnnotations = false; bool trustPrimitives = false; bool checkedMode = false; // List of provided options that imply that output is expected. List<String> optionsImplyCompilation = <String>[]; bool hasDisallowUnsafeEval = false; // TODO(johnniwinther): Measure time for reading files. SourceFileProvider inputProvider = new CompilerSourceFileProvider(); diagnosticHandler = new FormattingDiagnosticHandler(inputProvider); Map<String, dynamic> environment = new Map<String, dynamic>(); passThrough(String argument) => options.add(argument); if (BUILD_ID != null) { passThrough("--build-id=$BUILD_ID"); } setLibraryRoot(String argument) { libraryRoot = currentDirectory.resolve(extractPath(argument)); } setPackageRoot(String argument) { packageRoot = currentDirectory.resolve(extractPath(argument)); } setOutput(Iterator<String> arguments) { optionsImplyCompilation.add(arguments.current); String path; if (arguments.current == '-o') { if (!arguments.moveNext()) { helpAndFail('Error: Missing file after -o option.'); } path = arguments.current; } else { path = extractParameter(arguments.current); } explicitOut = true; out = currentDirectory.resolve(nativeToUriPath(path)); sourceMapOut = Uri.parse('$out.map'); } setOutputType(String argument) { optionsImplyCompilation.add(argument); if (argument == '--output-type=dart' || argument == '--output-type=dart-multi') { outputLanguage = OUTPUT_LANGUAGE_DART; if (!explicitOut) { out = currentDirectory.resolve('out.dart'); sourceMapOut = currentDirectory.resolve('out.dart.map'); } } passThrough(argument); } String getDepsOutput(Map<Uri, SourceFile> sourceFiles) { var filenames = sourceFiles.keys.map((uri) => '$uri').toList(); filenames.sort(); return filenames.join("\n"); } setStrip(String argument) { optionsImplyCompilation.add(argument); stripArgumentSet = true; passThrough(argument); } setAnalyzeOnly(String argument) { analyzeOnly = true; passThrough(argument); } setAnalyzeAll(String argument) { analyzeAll = true; passThrough(argument); } setAllowNativeExtensions(String argument) { allowNativeExtensions = true; passThrough(argument); } setVerbose(_) { diagnosticHandler.verbose = true; passThrough('--verbose'); } implyCompilation(String argument) { optionsImplyCompilation.add(argument); passThrough(argument); } setDumpInfo(String argument) { implyCompilation(argument); dumpInfo = true; } setTrustTypeAnnotations(String argument) { trustTypeAnnotations = true; implyCompilation(argument); } setTrustPrimitives(String argument) { trustPrimitives = true; implyCompilation(argument); } setCheckedMode(String argument) { checkedMode = true; passThrough(argument); } addInEnvironment(String argument) { int eqIndex = argument.indexOf('='); String name = argument.substring(2, eqIndex); String value = argument.substring(eqIndex + 1); environment[name] = value; } setCategories(String argument) { List<String> categories = extractParameter(argument).split(','); Set<String> allowedCategories = LIBRARIES.values.map((x) => x.category).toSet(); allowedCategories.remove('Shared'); allowedCategories.remove('Internal'); List<String> allowedCategoriesList = new List<String>.from(allowedCategories); allowedCategoriesList.sort(); if (categories.contains('all')) { categories = allowedCategoriesList; } else { String allowedCategoriesString = allowedCategoriesList.join(', '); for (String category in categories) { if (!allowedCategories.contains(category)) { fail('Unsupported library category "$category", ' 'supported categories are: $allowedCategoriesString'); } } } passThrough('--categories=${categories.join(",")}'); } void handleThrowOnError(String argument) { diagnosticHandler.throwOnError = true; String parameter = extractParameter(argument, isOptionalArgument: true); if (parameter != null) { diagnosticHandler.throwOnErrorCount = int.parse(parameter); } } handleShortOptions(String argument) { var shortOptions = argument.substring(1).split(""); for (var shortOption in shortOptions) { switch (shortOption) { case 'v': setVerbose(null); break; case 'h': case '?': wantHelp = true; break; case 'c': setCheckedMode('--enable-checked-mode'); break; case 'm': implyCompilation('--minify'); break; default: throw 'Internal error: "$shortOption" did not match'; } } } List<String> arguments = <String>[]; List<OptionHandler> handlers = <OptionHandler>[ new OptionHandler('-[chvm?]+', handleShortOptions), new OptionHandler('--throw-on-error(?:=[0-9]+)?', handleThrowOnError), new OptionHandler('--suppress-warnings', (_) { diagnosticHandler.showWarnings = false; passThrough('--suppress-warnings'); }), new OptionHandler('--suppress-hints', (_) => diagnosticHandler.showHints = false), new OptionHandler( '--output-type=dart|--output-type=dart-multi|--output-type=js', setOutputType), new OptionHandler('--verbose', setVerbose), new OptionHandler('--version', (_) => wantVersion = true), new OptionHandler('--library-root=.+', setLibraryRoot), new OptionHandler('--out=.+|-o.*', setOutput, multipleArguments: true), new OptionHandler('--allow-mock-compilation', passThrough), new OptionHandler('--minify|-m', implyCompilation), new OptionHandler('--preserve-uris', passThrough), new OptionHandler('--force-strip=.*', setStrip), new OptionHandler('--disable-diagnostic-colors', (_) => diagnosticHandler.enableColors = false), new OptionHandler('--enable-diagnostic-colors', (_) => diagnosticHandler.enableColors = true), new OptionHandler('--enable[_-]checked[_-]mode|--checked', (_) => setCheckedMode('--enable-checked-mode')), new OptionHandler('--enable-concrete-type-inference', (_) => implyCompilation( '--enable-concrete-type-inference')), new OptionHandler('--trust-type-annotations', (_) => setTrustTypeAnnotations( '--trust-type-annotations')), new OptionHandler('--trust-primitives', (_) => setTrustPrimitives( '--trust-primitives')), new OptionHandler(r'--help|/\?|/h', (_) => wantHelp = true), new OptionHandler('--package-root=.+|-p.+', setPackageRoot), new OptionHandler('--analyze-all', setAnalyzeAll), new OptionHandler('--analyze-only', setAnalyzeOnly), new OptionHandler('--analyze-signatures-only', setAnalyzeOnly), new OptionHandler('--disable-native-live-type-analysis', passThrough), new OptionHandler('--categories=.*', setCategories), new OptionHandler('--disable-type-inference', implyCompilation), new OptionHandler('--terse', passThrough), new OptionHandler('--deferred-map=.+', implyCompilation), new OptionHandler('--dump-info', setDumpInfo), new OptionHandler('--disallow-unsafe-eval', (_) => hasDisallowUnsafeEval = true), new OptionHandler('--show-package-warnings', passThrough), new OptionHandler('--csp', passThrough), new OptionHandler('--enable-experimental-mirrors', passThrough), new OptionHandler('--enable-async', (_) { diagnosticHandler.info( "Option '--enable-async' is no longer needed. " "Async-await is supported by default.", api.Diagnostic.HINT); }), new OptionHandler('--enable-enum', (_) { diagnosticHandler.info( "Option '--enable-enum' is no longer needed. " "Enums are supported by default.", api.Diagnostic.HINT); }), new OptionHandler('--allow-native-extensions', setAllowNativeExtensions), new OptionHandler('--generate-code-with-compile-time-errors', passThrough), // The following three options must come last. new OptionHandler('-D.+=.*', addInEnvironment), new OptionHandler('-.*', (String argument) { helpAndFail("Unknown option '$argument'."); }), new OptionHandler('.*', (String argument) { arguments.add(nativeToUriPath(argument)); }) ]; parseCommandLine(handlers, argv); if (wantHelp || wantVersion) { helpAndExit(wantHelp, wantVersion, diagnosticHandler.verbose); } if (hasDisallowUnsafeEval) { String precompiledName = relativize(currentDirectory, RandomAccessFileOutputProvider.computePrecompiledUri(out), Platform.isWindows); helpAndFail("Option '--disallow-unsafe-eval' has been removed." " Instead, the compiler generates a file named" " '$precompiledName'."); } if (outputLanguage != OUTPUT_LANGUAGE_DART && stripArgumentSet) { helpAndFail("Option '--force-strip' may only be used with " "'--output-type=dart'."); } if (arguments.isEmpty) { helpAndFail('No Dart file specified.'); } if (arguments.length > 1) { var extra = arguments.sublist(1); helpAndFail('Extra arguments: ${extra.join(" ")}'); } if (checkedMode && trustTypeAnnotations) { helpAndFail("Option '--trust-type-annotations' may not be used in " "checked mode."); } Uri uri = currentDirectory.resolve(arguments[0]); if (packageRoot == null) { packageRoot = uri.resolve('./packages/'); } if ((analyzeOnly || analyzeAll) && !optionsImplyCompilation.isEmpty) { if (!analyzeOnly) { diagnosticHandler.info( "Option '--analyze-all' implies '--analyze-only'.", api.Diagnostic.INFO); } diagnosticHandler.info( "Options $optionsImplyCompilation indicate that output is expected, " "but compilation is turned off by the option '--analyze-only'.", api.Diagnostic.INFO); } if (analyzeAll) analyzeOnly = true; if (!analyzeOnly) { if (allowNativeExtensions) { helpAndFail("Option '--allow-native-extensions' is only supported in " "combination with the '--analyze-only' option."); } } if (dumpInfo && outputLanguage == OUTPUT_LANGUAGE_DART) { helpAndFail("Option '--dump-info' is not supported in " "combination with the '--output-type=dart' option."); } diagnosticHandler.info('Package root is $packageRoot'); options.add('--out=$out'); options.add('--source-map=$sourceMapOut'); RandomAccessFileOutputProvider outputProvider = new RandomAccessFileOutputProvider( out, sourceMapOut, onInfo: diagnosticHandler.info, onFailure: fail); api.CompilationResult compilationDone(api.CompilationResult result) { if (analyzeOnly) return result; if (!result.isSuccess) { fail('Compilation failed.'); } writeString(Uri.parse('$out.deps'), getDepsOutput(inputProvider.sourceFiles)); diagnosticHandler.info( 'Compiled ${inputProvider.dartCharactersRead} characters Dart ' '-> ${outputProvider.totalCharactersWritten} characters ' '$outputLanguage in ' '${relativize(currentDirectory, out, Platform.isWindows)}'); if (diagnosticHandler.verbose) { String input = uriPathToNative(arguments[0]); print('Dart file ($input) compiled to $outputLanguage.'); print('Wrote the following files:'); for (String filename in outputProvider.allOutputFiles) { print(" $filename"); } } else if (!explicitOut) { String input = uriPathToNative(arguments[0]); String output = relativize(currentDirectory, out, Platform.isWindows); print('Dart file ($input) compiled to $outputLanguage: $output'); } return result; } return compileFunc(uri, libraryRoot, packageRoot, inputProvider, diagnosticHandler, options, outputProvider, environment) .then(compilationDone); } class AbortLeg { final message; AbortLeg(this.message); toString() => 'Aborted due to --throw-on-error: $message'; } void writeString(Uri uri, String text) { if (uri.scheme != 'file') { fail('Unhandled scheme ${uri.scheme}.'); } var file = new File(uri.toFilePath()).openSync(mode: FileMode.WRITE); file.writeStringSync(text); file.closeSync(); } void fail(String message) { if (diagnosticHandler != null) { diagnosticHandler.diagnosticHandler( null, -1, -1, message, api.Diagnostic.ERROR); } else { print('Error: $message'); } exitFunc(1); } Future<api.CompilationResult> compilerMain(List<String> arguments) { var root = uriPathToNative("/$LIBRARY_ROOT"); arguments = <String>['--library-root=${Platform.script.toFilePath()}$root'] ..addAll(arguments); return compile(arguments); } void help() { // This message should be no longer than 20 lines. The default // terminal size normally 80x24. Two lines are used for the prompts // before and after running the compiler. Another two lines may be // used to print an error message. print(''' Usage: dart2js [options] dartfile Compiles Dart to JavaScript. Common options: -o <file> Generate the output into <file>. -c Insert runtime type checks and enable assertions (checked mode). -m Generate minified output. -h Display this message (add -v for information about all options).'''); } void verboseHelp() { print(r''' Usage: dart2js [options] dartfile Compiles Dart to JavaScript. Supported options: -o <file>, --out=<file> Generate the output into <file>. -c, --enable-checked-mode, --checked Insert runtime type checks and enable assertions (checked mode). -m, --minify Generate minified output. -h, /h, /?, --help Display this message (add -v for information about all options). -v, --verbose Display verbose information. -D<name>=<value> Define an environment variable. --version Display version information. -p<path>, --package-root=<path> Where to find packages, that is, "package:..." imports. --analyze-all Analyze all code. Without this option, the compiler only analyzes code that is reachable from [main]. This option implies --analyze-only. --analyze-only Analyze but do not generate code. --analyze-signatures-only Skip analysis of method bodies and field initializers. This option implies --analyze-only. --suppress-warnings Do not display any warnings. --suppress-hints Do not display any hints. --enable-diagnostic-colors Add colors to diagnostic messages. --terse Emit diagnostics without suggestions for how to get rid of the diagnosed problems. --show-package-warnings Show warnings and hints generated from packages. --preserve-uris Preserve the source URIs in the reflection data. Without this flag the `uri` getter for `LibraryMirror`s is mangled in minified mode. --csp Disables dynamic generation of code in the generated output. This is necessary to satisfy CSP restrictions (see http://www.w3.org/TR/CSP/). The following options are only used for compiler development and may be removed in a future version: --output-type=dart Output Dart code instead of JavaScript. --throw-on-error Throw an exception if a compile-time error is detected. --library-root=<directory> Where to find the Dart platform libraries. --allow-mock-compilation Do not generate a call to main if either of the following libraries are used: dart:dom, dart:html dart:io. --disable-native-live-type-analysis Disable the optimization that removes unused native types from dart:html and related libraries. --categories=<categories> A comma separated list of allowed library categories. The default is "Client". Possible categories can be seen by providing an unsupported category, for example, --categories=help. To enable all categories, use --categories=all. --deferred-map=<file> Generates a json file with a mapping from each deferred import to a list of the part.js files that will be loaded. --dump-info Generates an out.info.json file with information about the generated code. You can inspect the generated file with the viewer at: https://dart-lang.github.io/dump-info-visualizer/ This feature is currently not supported in combination with the '--output-type=dart' option. --generate-code-with-compile-time-errors Generates output even if the program contains compile-time errors. Use the exit code to determine if compilation failed. '''.trim()); } void helpAndExit(bool wantHelp, bool wantVersion, bool verbose) { if (wantVersion) { var version = (BUILD_ID == null) ? '<non-SDK build>' : BUILD_ID; print('Dart-to-JavaScript compiler (dart2js) version: $version'); } if (wantHelp) { if (verbose) { verboseHelp(); } else { help(); } } exitFunc(0); } void helpAndFail(String message) { help(); print(''); fail(message); } void main(List<String> arguments) { // Since the sdk/bin/dart2js script adds its own arguments in front of // user-supplied arguments we search for '--batch' at the end of the list. if (arguments.length > 0 && arguments.last == "--batch") { batchMain(arguments.sublist(0, arguments.length - 1)); return; } internalMain(arguments); } var exitFunc = exit; var compileFunc = api.compile; Future<api.CompilationResult> internalMain(List<String> arguments) { Future onError(exception, trace) { // If we are already trying to exit, just continue exiting. if (exception == _EXIT_SIGNAL) throw exception; try { print('The compiler crashed: $exception'); } catch (ignored) { print('The compiler crashed: error while printing exception'); } try { if (trace != null) { print(trace); } } finally { exitFunc(253); // 253 is recognized as a crash by our test scripts. } return new Future.error(exception, trace); } try { return compilerMain(arguments).catchError(onError); } catch (exception, trace) { return onError(exception, trace); } } class _ExitSignal { const _ExitSignal(); } const _EXIT_SIGNAL = const _ExitSignal(); void batchMain(List<String> batchArguments) { int exitCode; exitFunc = (errorCode) { // Since we only throw another part of the compiler might intercept our // exception and try to exit with a different code. if (exitCode == 0) { exitCode = errorCode; } throw _EXIT_SIGNAL; }; var stream = stdin.transform(UTF8.decoder).transform(new LineSplitter()); var subscription; subscription = stream.listen((line) { new Future.sync(() { subscription.pause(); exitCode = 0; if (line == null) exit(0); List<String> args = <String>[]; args.addAll(batchArguments); args.addAll(splitLine(line, windows: Platform.isWindows)); return internalMain(args); }).catchError((exception, trace) { if (!identical(exception, _EXIT_SIGNAL)) { exitCode = 253; } }).whenComplete(() { // The testing framework waits for a status line on stdout and // stderr before moving to the next test. if (exitCode == 0){ print(">>> TEST OK"); } else if (exitCode == 253) { print(">>> TEST CRASH"); } else { print(">>> TEST FAIL"); } stderr.writeln(">>> EOF STDERR"); subscription.resume(); }); }); }