remove support for analyzer configuration in pubspec

pkg/analyzer/lib/source/config.dart

Index: pkg/analyzer/lib/source/config.dart
diff --git a/pkg/analyzer/lib/source/config.dart b/pkg/analyzer/lib/source/config.dart
deleted file mode 100644
index db44b4eec4b6b87b01495da59ffcbc6895b5b6d4..0000000000000000000000000000000000000000
--- a/pkg/analyzer/lib/source/config.dart
+++ /dev/null
@@ -1,108 +0,0 @@
-// 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.
-
-import 'package:analyzer/file_system/file_system.dart';
-import 'package:analyzer/source/analysis_options_provider.dart';
-import 'package:analyzer/src/generated/engine.dart';
-import 'package:analyzer/src/task/model.dart';
-import 'package:analyzer/task/model.dart';
-import 'package:package_config/packages.dart';
-import 'package:yaml/src/yaml_node.dart';
-import 'package:yaml/yaml.dart';
-
-/// The descriptor used to associate analysis configuration with analysis
-/// contexts in configuration data.
-final ResultDescriptor<AnalysisConfiguration> ANALYSIS_CONFIGURATION =
-    new ResultDescriptorImpl('analysis.config', null);
-
-/// Return configuration associated with this [context], or `null` if there is
-/// none.
-AnalysisConfiguration getConfiguration(AnalysisContext context) =>
-    context.getConfigurationData(ANALYSIS_CONFIGURATION);
-
-/// Associate this [config] with the given [context].
-void setConfiguration(AnalysisContext context, AnalysisConfiguration config) {
-  context.setConfigurationData(ANALYSIS_CONFIGURATION, config);
-}
-
-/// Analysis configuration.
-abstract class AnalysisConfiguration {
-  final AnalysisOptionsProvider optionsProvider = new AnalysisOptionsProvider();
-  final Packages packages;
-  final ResourceProvider resourceProvider;
-  AnalysisConfiguration(this.resourceProvider, this.packages);
-
-  factory AnalysisConfiguration.fromPubspec(
-          File pubspec, ResourceProvider resourceProvider, Packages packages) =>
-      new PubspecConfiguration(pubspec, resourceProvider, packages);
-
-  /// Get a map of options defined by this configuration (or `null` if none
-  /// are specified).
-  Map get options;
-}
-
-/// Describes an analysis configuration.
-class AnalysisConfigurationDescriptor {
-  /// The name of the package hosting the configuration.
-  String package;
-
-  /// The name of the configuration "pragma".
-  String pragma;
-
-  AnalysisConfigurationDescriptor.fromAnalyzerOptions(Map analyzerOptions) {
-    Object config = analyzerOptions['configuration'];
-    if (config is String) {
-      List<String> items = config.split('/');
-      if (items.length == 2) {
-        package = items[0].trim();
-        pragma = items[1].trim();
-      }
-    }
-  }
-
-  /// Return true if this descriptor is valid.
-  bool get isValid => package != null && pragma != null;
-}
-
-/// Pubspec-specified analysis configuration.
-class PubspecConfiguration extends AnalysisConfiguration {
-  final File pubspec;
-  PubspecConfiguration(
-      this.pubspec, ResourceProvider resourceProvider, Packages packages)
-      : super(resourceProvider, packages);
-
-  @override
-  Map get options {
-    //Safest not to cache (requested infrequently).
-    if (pubspec.exists) {
-      try {
-        String contents = pubspec.readAsStringSync();
-        YamlNode map = loadYamlNode(contents);
-        if (map is YamlMap) {
-          YamlNode config = map['analyzer'];
-          if (config is YamlMap) {
-            AnalysisConfigurationDescriptor descriptor =
-                new AnalysisConfigurationDescriptor.fromAnalyzerOptions(config);
-
-            if (descriptor.isValid) {
-              //Create a path, given descriptor and packagemap
-              Uri uri = packages.asMap()[descriptor.package];
-              Uri pragma = new Uri.file('config/${descriptor.pragma}.yaml',
-                  windows: false);
-              Uri optionsUri = uri.resolveUri(pragma);
-              String path = resourceProvider.pathContext.fromUri(optionsUri);
-              File file = resourceProvider.getFile(path);
-              if (file.exists) {
-                return optionsProvider.getOptionsFromFile(file);
-              }
-            }
-          }
-        }
-      } catch (_) {
-        // Skip exceptional configurations.
-      }
-    }
-    return null;
-  }
-}