cleanup: simplify creation of AnalysisContext

lib/devc.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.
 
 /// Command line tool to run the checker on a Dart program.
 library dev_compiler.devc;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
 import 'package:analyzer/src/generated/error.dart' as analyzer;
 import 'package:analyzer/src/generated/engine.dart'
     show AnalysisContext, ChangeSet;
 import 'package:analyzer/src/generated/source.dart' show Source;
 import 'package:logging/logging.dart' show Level, Logger, LogRecord;
 import 'package:path/path.dart' as path;
 import 'package:shelf/shelf.dart' as shelf;
 import 'package:shelf/shelf_io.dart' as shelf;
 import 'package:shelf_static/shelf_static.dart' as shelf_static;
 
+
+import 'src/analysis_context.dart';
 import 'src/checker/checker.dart';
-import 'src/checker/dart_sdk.dart' show mockSdkSources;
-import 'src/checker/resolver.dart';
 import 'src/checker/rules.dart';
 import 'src/codegen/code_generator.dart' show CodeGenerator;
 import 'src/codegen/dart_codegen.dart';
 import 'src/codegen/html_codegen.dart';
 import 'src/codegen/js_codegen.dart';
 import 'src/dependency_graph.dart';
 import 'src/info.dart'
     show AnalyzerError, CheckerResults, LibraryInfo, LibraryUnit;
 import 'src/options.dart';
 import 'src/report.dart';
@@ skipping 23 matching lines @@
   final CheckerReporter _reporter;
   final TypeRules rules;
   final CodeChecker _checker;
   final SourceNode _entryNode;
   List<LibraryInfo> _libraries = <LibraryInfo>[];
   final _generators = <CodeGenerator>[];
   bool _hashing;
   bool _failure = false;
 
   factory Compiler(CompilerOptions options,
-      {TypeResolver resolver, CheckerReporter reporter}) {
-    if (resolver == null) {
-      resolver = options.useMockSdk
-          ? new TypeResolver.fromMock(mockSdkSources, options)
-          : new TypeResolver.fromDir(options.dartSdkPath, options);
-    }
-    var context = resolver.context;
+      {AnalysisContext context, CheckerReporter reporter}) {
+
+    if (context == null) context = createAnalysisContext(options);
 
     if (reporter == null) {
       reporter = options.dumpInfo
           ? new SummaryReporter(context, options.logLevel)
           : new LogReporter(context, useColors: options.useColors);
     }
     var graph = new SourceGraph(context, reporter, options);
     var rules = new RestrictedRules(context.typeProvider, options: options);
     var checker = new CodeChecker(rules, reporter, options);
 
@@ skipping 248 matching lines @@
       // Note: the cache-control header should be enough, but this doesn't hurt
       // and can help renew the policy after it expires.
       headers['ETag'] = hash;
     }
     return response.change(headers: headers);
   };
 }
 
 final _log = new Logger('dev_compiler');
 final _earlyErrorResult = new CheckerResults(const [], null, true);