enable/disable default package contributed analysis options

pkg/analyzer/lib/src/context/builder.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.context.context_builder;
 
 import 'dart:collection';
 import 'dart:core';
 
 import 'package:analyzer/context/declared_variables.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/plugin/resolver_provider.dart';
 import 'package:analyzer/source/analysis_options_provider.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/src/command_line/arguments.dart'
-    show applyAnalysisOptionFlags;
+    show
+        applyAnalysisOptionFlags,
+        bazelAnalysisOptionsPath,
+        flutterAnalysisOptionsPath;
 import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart'
     show AnalysisDriver, AnalysisDriverScheduler, PerformanceLog;
 import 'package:analyzer/src/dart/analysis/file_state.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart';
 import 'package:analyzer/src/generated/bazel.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/gn.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
@@ skipping 364 matching lines @@
     if (optionsFile != null) {
       try {
         optionMap = optionsProvider.getOptionsFromFile(optionsFile);
         verbose('Loaded analysis options from ${optionsFile.path}');
       } catch (e) {
         // Ignore exceptions thrown while trying to load the options file.
         verbose('Exception: $e\n  when loading ${optionsFile.path}');
       }
     } else {
       // Search for the default analysis options
+      // unless explicitly directed not to do so.
       Source source;
-      // TODO(danrubel) determine if bazel or gn project depends upon flutter
-      if (workspace.hasFlutterDependency) {
-        source =
-            sourceFactory.forUri('package:flutter/analysis_options_user.yaml');
-      }
-      if (source == null || !source.exists()) {
-        source =
-            sourceFactory.forUri('package:dart.analysis_options/default.yaml');
-      }
-      if (source.exists()) {
-        try {
-          optionMap = optionsProvider.getOptionsFromSource(source);
-          verbose('Loaded analysis options from ${source.fullName}');
-        } catch (e) {
-          // Ignore exceptions thrown while trying to load the options file.
-          verbose('Exception: $e\n  when loading ${source.fullName}');
+      if (builderOptions.packageDefaultAnalysisOptions) {
+        // TODO(danrubel) determine if bazel or gn project depends upon flutter
+        if (workspace.hasFlutterDependency) {
+          source = sourceFactory.forUri(flutterAnalysisOptionsPath);
+        }
+        if (source == null || !source.exists()) {
+          source = sourceFactory.forUri(bazelAnalysisOptionsPath);
+        }
+        if (source.exists()) {
+          try {
+            optionMap = optionsProvider.getOptionsFromSource(source);
+            verbose('Loaded analysis options from ${source.fullName}');
+          } catch (e) {
+            // Ignore exceptions thrown while trying to load the options file.
+            verbose('Exception: $e\n  when loading ${source.fullName}');
+          }
         }
       }
     }
 
     if (optionMap != null) {
       applyToAnalysisOptions(options, optionMap);
       if (builderOptions.argResults != null) {
         applyAnalysisOptionFlags(options, builderOptions.argResults,
             verbosePrint: verbosePrint);
         // If lints turned on but none specified, then enable default lints
@@ skipping 193 matching lines @@
   String defaultPackageFilePath;
 
   /**
    * The file path of the packages directory that should be used in place of any
    * file found using the normal (Package Specification DEP) lookup mechanism,
    * or `null` if the normal lookup mechanism should be used.
    */
   String defaultPackagesDirectoryPath;
 
   /**
+   * Allow Flutter and bazel default analysis options to be used.
+   */
+  bool packageDefaultAnalysisOptions = true;
+
+  /**
    * Initialize a newly created set of options
    */
   ContextBuilderOptions();
 }
 
 /**
  * Given a package map, check in each package's lib directory for the existence
  * of an `_embedder.yaml` file. If the file contains a top level YamlMap, it
  * will be added to the [embedderYamls] map.
  */
@@ skipping 148 matching lines @@
 
     // Ensure that the path is absolute and normalized.
     if (!context.isAbsolute(path)) {
       throw new ArgumentError('not absolute: $path');
     }
     path = context.normalize(path);
 
     return new _BasicWorkspace._(provider, path, builder);
   }
 }