expose strong checker API, for use by analyzer_cli

lib/src/codegen/code_generator.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 dev_compiler.src.codegen.code_generator;
 
 import 'dart:io';
 
 import 'package:analyzer/src/generated/ast.dart' show CompilationUnit;
 import 'package:analyzer/src/generated/element.dart'
     show CompilationUnitElement, LibraryElement;
 import 'package:analyzer/src/generated/engine.dart' show AnalysisContext;
 import 'package:path/path.dart' as path;
 
 import 'package:dev_compiler/devc.dart' show AbstractCompiler;
 import 'package:dev_compiler/src/info.dart';
 import 'package:dev_compiler/src/utils.dart' show canonicalLibraryName;
 import 'package:dev_compiler/src/checker/rules.dart';
-import 'package:dev_compiler/src/options.dart';
+import 'package:dev_compiler/src/options.dart' show CodegenOptions;
 
 abstract class CodeGenerator {
   final AbstractCompiler compiler;
   final String outDir;
   final Uri root;
   final TypeRules rules;
   final AnalysisContext context;
-  final CompilerOptions options;
+  final CodegenOptions options;
 
   CodeGenerator(AbstractCompiler compiler)
       : compiler = compiler,
-        outDir = path.absolute(compiler.options.outputDir),
+        outDir = path.absolute(compiler.options.codegenOptions.outputDir),
         root = compiler.entryPointUri,
         rules = compiler.rules,
         context = compiler.context,
-        options = compiler.options;
+        options = compiler.options.codegenOptions;
 
   /// Return a hash, if any, that can be used for caching purposes. When two
   /// invocations to this function return the same hash, the underlying
   /// code-generator generated the same code.
   String generateLibrary(LibraryUnit unit, LibraryInfo info);
 
   static List<String> _searchPaths = () {
     // TODO(vsm): Can we remove redundancy with multi_package_resolver logic?
     var packagePaths =
         new String.fromEnvironment('package_paths', defaultValue: null);
@@ skipping 91 matching lines @@
       // Not a package.
       // TODO(leafp) These may need to be adjusted
       // relative to the import location
       return new Uri(path: suffix);
     }
     assert(index == 0);
     return new Uri(
         scheme: 'package', path: path.joinAll(parts.sublist(index + 1)));
   }
 }