enable/disable default package contributed analysis options

pkg/analyzer/lib/src/command_line/arguments.dart

 // Copyright (c) 2016, 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.src.command_line.arguments;
 
 import 'dart:collection';
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/context/builder.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:args/args.dart';
 import 'package:path/path.dart';
 
 const String analysisOptionsFileOption = 'options';
 const String defineVariableOption = 'D';
 const String enableInitializingFormalAccessFlag = 'initializing-formal-access';
 const String enableStrictCallChecksFlag = 'enable-strict-call-checks';
 const String enableSuperMixinFlag = 'supermixin';
 const String ignoreUnrecognizedFlagsFlag = 'ignore-unrecognized-flags';
 const String lintsFlag = 'lints';
 const String noImplicitCastsFlag = 'no-implicit-casts';
 const String noImplicitDynamicFlag = 'no-implicit-dynamic';
+const String packageDefaultAnalysisOptions = 'package-default-analysis-options';
 const String packageRootOption = 'package-root';
 const String packagesOption = 'packages';
 const String sdkPathOption = 'dart-sdk';
 const String sdkSummaryPathOption = 'dart-sdk-summary';
 const String strongModeFlag = 'strong';
 
+const String bazelAnalysisOptionsPath =
+    'package:dart.analysis_options/default.yaml';
+const String flutterAnalysisOptionsPath =
+    'package:flutter/analysis_options_user.yaml';
+
 /**
  * Update [options] with the value of each analysis option command line flag.
  */
 void applyAnalysisOptionFlags(AnalysisOptionsImpl options, ArgResults args,
     {void verbosePrint(String text)}) {
   void verbose(String text) {
     if (verbosePrint != null) {
       verbosePrint('Analysis options: $text');
     }
   }
@@ skipping 38 matching lines @@
   builderOptions.argResults = args;
   //
   // File locations.
   //
   builderOptions.dartSdkSummaryPath = args[sdkSummaryPathOption];
   builderOptions.defaultAnalysisOptionsFilePath =
       args[analysisOptionsFileOption];
   builderOptions.defaultPackageFilePath = args[packagesOption];
   builderOptions.defaultPackagesDirectoryPath = args[packageRootOption];
   //
+  // Flags.
+  //
+  builderOptions.packageDefaultAnalysisOptions =
+      args[packageDefaultAnalysisOptions];
+  //
   // Analysis options.
   //
   AnalysisOptionsImpl defaultOptions = new AnalysisOptionsImpl();
   applyAnalysisOptionFlags(defaultOptions, args);
   if (strongMode != null) {
     defaultOptions.strongMode = strongMode;
   }
   if (trackCacheDependencies != null) {
     defaultOptions.trackCacheDependencies = trackCacheDependencies;
   }
@@ skipping 72 matching lines @@
 
   //
   // Hidden flags and options.
   //
   parser.addOption(defineVariableOption,
       abbr: 'D',
       allowMultiple: true,
       help: 'Define environment variables. For example, "-Dfoo=bar" defines an '
           'environment variable named "foo" whose value is "bar".',
       hide: hide);
+  parser.addFlag(packageDefaultAnalysisOptions,
+      help: 'If an analysis options file is not explicitly specified '
+          'via the "--$analysisOptionsFileOption" option\n'
+          'and an analysis options file cannot be found '
+          'in the project directory or any parent directory,\n'
+          'then look for analysis options in the following locations:\n'
+          '- $flutterAnalysisOptionsPath\n'
+          '- $bazelAnalysisOptionsPath',
+      defaultsTo: true,
+      negatable: true,
+      hide: hide);
   parser.addOption(packagesOption,
       help: 'The path to the package resolution configuration file, which '
           'supplies a mapping of package names\nto paths. This option cannot be '
           'used with --package-root.',
       hide: ddc);
   parser.addOption(sdkSummaryPathOption,
       help: 'The path to the Dart SDK summary file.', hide: hide);
   parser.addFlag(enableStrictCallChecksFlag,
       help: 'Fix issue 21938.',
       defaultsTo: false,
@@ skipping 135 matching lines @@
           .replaceAll('\r\n', '\n')
           .replaceAll('\r', '\n')
           .split('\n')
           .where((String line) => line.isNotEmpty));
     } on FileSystemException catch (e) {
       throw new Exception('Failed to read file specified by $lastArg : $e');
     }
   }
   return args;
 }