Move dart2js from sdk/lib/_internal/compiler to pkg/compiler

sdk/lib/_internal/compiler/implementation/dart2js.dart

Index: sdk/lib/_internal/compiler/implementation/dart2js.dart
diff --git a/sdk/lib/_internal/compiler/implementation/dart2js.dart b/sdk/lib/_internal/compiler/implementation/dart2js.dart
deleted file mode 100644
index 2359ad26a9f0182eaecb16939cdf43d008616389..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/compiler/implementation/dart2js.dart
+++ /dev/null
@@ -1,688 +0,0 @@
-// 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 '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 '../../libraries.dart';
-
-const String LIBRARY_ROOT = '../../../../..';
-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 compile(List<String> argv) {
-  stackTraceFilePrefix = '$currentDirectory';
-  Uri libraryRoot = currentDirectory;
-  Uri out = currentDirectory.resolve('out.js');
-  Uri sourceMapOut = currentDirectory.resolve('out.js.map');
-  Uri packageRoot = null;
-  List<String> options = new List<String>();
-  bool explicitOut = false;
-  bool wantHelp = false;
-  bool wantVersion = false;
-  String outputLanguage = 'JavaScript';
-  bool stripArgumentSet = false;
-  bool analyzeOnly = false;
-  bool analyzeAll = false;
-  bool enableAsyncAwait = false;
-  bool trustTypeAnnotations = false;
-  bool checkedMode = false;
-  // List of provided options that imply that output is expected.
-  List<String> optionsImplyCompilation = <String>[];
-  bool hasDisallowUnsafeEval = false;
-  // TODO(johnniwinther): Measure time for reading files.
-  SourceFileProvider inputProvider = new CompilerSourceFileProvider();
-  diagnosticHandler = new FormattingDiagnosticHandler(inputProvider);
-  Map<String, dynamic> environment = new Map<String, dynamic>();
-
-  passThrough(String argument) => options.add(argument);
-
-  if (BUILD_ID != null) {
-    passThrough("--build-id=$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<String, SourceFile> sourceFiles) {
-    var filenames = new List.from(sourceFiles.keys);
-    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);
-  }
-
-  setEnableAsync(String argument) {
-    enableAsyncAwait = true;
-    passThrough(argument);
-  }
-
-  setVerbose(_) {
-    diagnosticHandler.verbose = true;
-    passThrough('--verbose');
-  }
-
-  implyCompilation(String argument) {
-    optionsImplyCompilation.add(argument);
-    passThrough(argument);
-  }
-
-  setTrustTypeAnnotations(String argument) {
-    trustTypeAnnotations = 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(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('--dump-info', implyCompilation),
-    new OptionHandler('--disallow-unsafe-eval',
-                      (_) => hasDisallowUnsafeEval = true),
-    new OptionHandler('--show-package-warnings', passThrough),
-    new OptionHandler('--csp', passThrough),
-    new OptionHandler('--enable-async', setEnableAsync),
-    new OptionHandler('-D.+=.*', addInEnvironment),
-
-    // The following two options must come last.
-    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 (enableAsyncAwait && !analyzeOnly) {
-    helpAndFail("Option '--enable-async' is currently only supported in "
-                "combination with the '--analyze-only' option.");
-  }
-
-  diagnosticHandler.info('Package root is $packageRoot');
-
-  options.add('--out=$out');
-  options.add('--source-map=$sourceMapOut');
-
-  RandomAccessFileOutputProvider outputProvider =
-      new RandomAccessFileOutputProvider(
-          out, sourceMapOut, onInfo: diagnosticHandler.info, onFailure: fail);
-
-  compilationDone(String code) {
-    if (analyzeOnly) return;
-    if (code == null) {
-      fail('Compilation failed.');
-    }
-    writeString(Uri.parse('$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 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: $message');
-  }
-  exitFunc(1);
-}
-
-Future compilerMain(List<String> arguments) {
-  var root = uriPathToNative("/$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.
-
-  --enable-concrete-type-inference
-    Enable experimental concrete type inference.
-
-  --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.
-
-  --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/
-
-'''.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 internalMain(List<String> arguments) {
-  onError(exception, trace) {
-    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.
-    }
-  }
-
-  try {
-    return compilerMain(arguments).catchError(onError);
-  } catch (exception, trace) {
-    onError(exception, trace);
-    return new Future.value();
-  }
-}
-
-const _EXIT_SIGNAL = const Object();
-
-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();
-    });
-  });
-}