Defer to engine for option-aware context config.

lib/src/driver.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.driver;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
 import 'package:analyzer/file_system/file_system.dart' as fileSystem;
 import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:analyzer/plugin/options.dart';
 import 'package:analyzer/source/analysis_options_provider.dart';
 import 'package:analyzer/source/package_map_provider.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/source/pub_package_map_provider.dart';
 import 'package:analyzer/source/sdk_ext.dart';
 import 'package:analyzer/src/generated/constant.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/error.dart';
 import 'package:analyzer/src/generated/interner.dart';
 import 'package:analyzer/src/generated/java_engine.dart';
 import 'package:analyzer/src/generated/java_io.dart';
 import 'package:analyzer/src/generated/sdk_io.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/services/lint.dart';
+import 'package:analyzer/src/task/options.dart';
 import 'package:analyzer_cli/src/analyzer_impl.dart';
 import 'package:analyzer_cli/src/options.dart';
 import 'package:linter/src/plugin/linter_plugin.dart';
 import 'package:package_config/discovery.dart' as pkgDiscovery;
 import 'package:package_config/packages.dart' show Packages;
 import 'package:package_config/packages_file.dart' as pkgfile show parse;
 import 'package:package_config/src/packages_impl.dart' show MapPackages;
 import 'package:path/path.dart' as path;
 import 'package:plugin/plugin.dart';
 import 'package:yaml/yaml.dart';
@@ skipping 89 matching lines @@
     // Add all the files to be analyzed en masse to the context.  Skip any
     // files that were added earlier (whether explicitly or implicitly) to
     // avoid causing those files to be unnecessarily re-read.
     Set<Source> knownSources = _context.sources.toSet();
     List<Source> sourcesToAnalyze = <Source>[];
     ChangeSet changeSet = new ChangeSet();
     for (String sourcePath in options.sourceFiles) {
       sourcePath = sourcePath.trim();
       // Check that file exists.
       if (!new File(sourcePath).existsSync()) {
-        stderr.writeln('File not found: $sourcePath');
+        errorSink.writeln('File not found: $sourcePath');
         exitCode = ErrorSeverity.ERROR.ordinal;
         //Fail fast; don't analyze more files
         return ErrorSeverity.ERROR;
       }
       // Check that file is Dart file.
       if (!AnalysisEngine.isDartFileName(sourcePath)) {
-        stderr.writeln('$sourcePath is not a Dart file');
+        errorSink.writeln('$sourcePath is not a Dart file');
         exitCode = ErrorSeverity.ERROR.ordinal;
         // Fail fast; don't analyze more files.
         return ErrorSeverity.ERROR;
       }
       Source source = _computeLibrarySource(sourcePath);
       if (!knownSources.contains(source)) {
         changeSet.addedSource(source);
       }
       sourcesToAnalyze.add(source);
     }
@@ skipping 329 matching lines @@
       Map<String, YamlNode> optionMap =
           analysisOptionsProvider.getOptionsFromFile(file);
       optionsProcessors.forEach(
           (OptionsProcessor p) => p.optionsProcessed(context, optionMap));
 
       // Fill in lint rule defaults in case lints are enabled and rules are
       // not specified in an options file.
       if (options.lints && !containsLintRuleEntry(optionMap)) {
         setLints(context, linterPlugin.contributedRules);
       }
+
+      // Ask engine to further process options.
+      if (optionMap != null) {
+        configureContextOptions(context, optionMap);
+      }
     } on Exception catch (e) {
       optionsProcessors.forEach((OptionsProcessor p) => p.onError(e));
     }
   }
 
   void _processPlugins() {
     List<Plugin> plugins = <Plugin>[];
     plugins.add(linterPlugin);
     plugins.addAll(_userDefinedPlugins);
     AnalysisEngine.instance.userDefinedPlugins = plugins;
@@ skipping 126 matching lines @@
     for (var package in packages) {
       var packageName = path.basename(package.path);
       var realPath = package.resolveSymbolicLinksSync();
       result[packageName] = [
         PhysicalResourceProvider.INSTANCE.getFolder(realPath)
       ];
     }
     return result;
   }
 }