Some improvements to the command-line analyzer's output.

pkg/analyzer_cli/lib/src/options.dart

 // Copyright (c) 2015, 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 analyzer_cli.src.options;
 
 import 'dart:io';
 
 import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:analyzer/src/command_line/arguments.dart';
 import 'package:analyzer/src/context/builder.dart';
-import 'package:analyzer_cli/src/driver.dart';
 import 'package:args/args.dart';
 import 'package:cli_util/cli_util.dart' show getSdkDir;
 
+import 'driver.dart';
+
 const _binaryName = 'dartanalyzer';
 
 /// Shared exit handler.
 ///
 /// *Visible for testing.*
 ExitHandler exitHandler = exit;
 
 /// Print the given [message] to stderr and exit with the given [exitCode].
 void printAndFail(String message, {int exitCode: 15}) {
   errorSink.writeln(message);
@@ skipping 110 matching lines @@
 
   /// Whether implicit dynamic is enabled (mainly for strong mode users)
   final bool implicitDynamic;
 
   /// Whether to treat lints as fatal
   final bool lintsAreFatal;
 
   /// Whether to use memory byte store for analysis driver.
   final bool useAnalysisDriverMemoryByteStore;
 
+  /// Emit output in a verbose mode.
+  final bool verbose;
+
   /// Initialize options from the given parsed [args].
   CommandLineOptions._fromArgs(ArgResults args)
       : buildAnalysisOutput = args['build-analysis-output'],
         buildMode = args['build-mode'],
         buildModePersistentWorker = args['persistent_worker'],
         buildSummaryInputs = args['build-summary-input'] as List<String>,
         buildSummaryOnly = args['build-summary-only'],
         buildSummaryOnlyDiet = args['build-summary-only-diet'],
         buildSummaryExcludeInformative =
             args['build-summary-exclude-informative'],
@@ skipping 19 matching lines @@
             args['x-package-warnings-prefix'] != null,
         showPackageWarningsPrefix = args['x-package-warnings-prefix'],
         showSdkWarnings = args['show-sdk-warnings'] || args['warnings'],
         sourceFiles = args.rest,
         warningsAreFatal = args['fatal-warnings'],
         strongMode = args['strong'],
         implicitCasts = !args['no-implicit-casts'],
         implicitDynamic = !args['no-implicit-dynamic'],
         lintsAreFatal = args['fatal-lints'],
         useAnalysisDriverMemoryByteStore =
-            args['use-analysis-driver-memory-byte-store'];
+            args['use-analysis-driver-memory-byte-store'],
+        verbose = args['verbose'];
 
   /// The path to an analysis options file
   String get analysisOptionsFile =>
       contextBuilderOptions.defaultAnalysisOptionsFilePath;
 
   /// A table mapping the names of defined variables to their values.
   Map<String, String> get definedVariables =>
       contextBuilderOptions.declaredVariables;
 
   /// Whether to strictly follow the specification when generating warnings on
@@ skipping 101 matching lines @@
       ..addFlag('version',
           help: 'Print the analyzer version.',
           defaultsTo: false,
           negatable: false)
       ..addFlag('lints',
           help: 'Show lint results.', defaultsTo: false, negatable: false)
       ..addFlag('no-hints',
           help: 'Do not show hint results.',
           defaultsTo: false,
           negatable: false)
-      ..addFlag(ignoreUnrecognizedFlagsFlag,
-          help: 'Ignore unrecognized command line flags.',
-          defaultsTo: false,
-          negatable: false)
       ..addFlag('fatal-hints',
           help: 'Treat hints as fatal.', defaultsTo: false, negatable: false)
       ..addFlag('fatal-warnings',
           help: 'Treat non-type warnings as fatal.',
           defaultsTo: false,
           negatable: false)
       ..addFlag('fatal-lints',
           help: 'Treat lints as fatal.', defaultsTo: false, negatable: false)
       ..addFlag('package-warnings',
           help: 'Show warnings from package: imports.',
@@ skipping 14 matching lines @@
       ..addFlag('help',
           abbr: 'h',
           help:
               'Display this help message. Add --verbose to show hidden options.',
           defaultsTo: false,
           negatable: false)
       ..addFlag('verbose',
           abbr: 'v',
           defaultsTo: false,
           help: 'Verbose output.',
-          negatable: false)
-      ..addOption('url-mapping',
-          help: '--url-mapping=libraryUri,/path/to/library.dart directs the '
-              'analyzer to use "library.dart" as the source for an import '
-              'of "libraryUri".',
-          allowMultiple: true,
-          splitCommas: false);
+          negatable: false);
 
     // Build mode options.
     if (!hide) {
       parser.addSeparator('Build mode flags:');
     }
 
     parser
       ..addFlag('persistent_worker',
           help: 'Enable Bazel persistent worker mode.',
           defaultsTo: false,
@@ skipping 53 matching lines @@
     if (!hide) {
       parser.addSeparator('Less frequently used flags:');
     }
 
     parser
       ..addFlag('batch',
           help: 'Read commands from standard input (for testing).',
           defaultsTo: false,
           negatable: false,
           hide: hide)
+      ..addFlag(ignoreUnrecognizedFlagsFlag,
+          help: 'Ignore unrecognized command line flags.',
+          defaultsTo: false,
+          negatable: false,
+          hide: hide)
       ..addFlag('disable-cache-flushing', defaultsTo: false, hide: hide)
       ..addOption('x-perf-report',
           help: 'Writes a performance report to the given file (experimental).',
           hide: hide)
       ..addOption('x-package-warnings-prefix',
           help:
               'Show warnings from package: imports that match the given prefix',
           hide: hide)
       ..addFlag('enable-conditional-directives',
           help:
               'deprecated -- Enable support for conditional directives (DEP 40).',
           defaultsTo: false,
           negatable: false,
           hide: hide)
       ..addFlag('log',
           help: 'Log additional messages and exceptions.',
           defaultsTo: false,
           negatable: false,
           hide: hide)
       ..addFlag('enable_type_checks',
           help: 'Check types in constant evaluation.',
           defaultsTo: false,
           negatable: false,
           hide: hide)
       ..addFlag('use-analysis-driver-memory-byte-store',
           help: 'Use memory byte store, not the file system cache.',
           defaultsTo: false,
           negatable: false,
+          hide: hide)
+      ..addOption('url-mapping',
+          help: '--url-mapping=libraryUri,/path/to/library.dart directs the '
+              'analyzer to use "library.dart" as the source for an import '
+              'of "libraryUri".',
+          allowMultiple: true,
+          splitCommas: false,
           hide: hide);
 
     try {
       if (args.contains('--$ignoreUnrecognizedFlagsFlag')) {
         args = filterUnknownArguments(args, parser);
       }
       ArgResults results = parser.parse(args);
 
       // Persistent worker.
       if (args.contains('--persistent_worker')) {
@@ skipping 63 matching lines @@
         'Usage: $_binaryName [options...] <directory or list of files>');
     errorSink.writeln('');
     errorSink.writeln(parser.usage);
     errorSink.writeln('');
     errorSink.writeln('''
 Run "dartanalyzer -h -v" for verbose help output, including less commonly used options.
 For more information, see http://www.dartlang.org/tools/analyzer.
 ''');
   }
 }