Add some user-friendly utility functions to pkg/analyzer_experimental.

pkg/analyzer_experimental/bin/analyzer.dart

 #!/usr/bin/env dart
 
 // Copyright (c) 2013, 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.
 
 /** The entry point for the analyzer. */
 library analyzer;
 
 import 'dart:async';
 import 'dart:io';
 
 import 'package:analyzer_experimental/src/generated/java_io.dart';
 import 'package:analyzer_experimental/src/generated/engine.dart';
 import 'package:analyzer_experimental/src/generated/error.dart';
 import 'package:analyzer_experimental/src/generated/source_io.dart';
 import 'package:analyzer_experimental/src/generated/sdk.dart';
 import 'package:analyzer_experimental/src/generated/sdk_io.dart';
 import 'package:analyzer_experimental/src/generated/ast.dart';
 import 'package:analyzer_experimental/src/generated/element.dart';
 import 'package:analyzer_experimental/options.dart';
 
-part 'package:analyzer_experimental/analyzer.dart';
-part 'package:analyzer_experimental/error_formatter.dart';
+import 'package:analyzer_experimental/src/analyzer_impl.dart';
+import 'package:analyzer_experimental/src/error_formatter.dart';
 
 void main() {
   var args = new Options().arguments;
   var options = CommandLineOptions.parse(args);
   if (options.shouldBatch) {
     BatchRunner.runAsBatch(args, (List<String> args) {
       var options = CommandLineOptions.parse(args);
       return _runAnalyzer(options);
     });
   } else {
     ErrorSeverity result = _runAnalyzer(options);
     exit(result.ordinal);
   }
 }
 
 ErrorSeverity _runAnalyzer(CommandLineOptions options) {
   for (String sourcePath in options.sourceFiles) {
     sourcePath = sourcePath.trim();
     // check that file exists
     if (!new File(sourcePath).existsSync()) {
       print('File not found: $sourcePath');
       return ErrorSeverity.ERROR;
     }
     // check that file is Dart file
     if (!AnalysisEngine.isDartFileName(sourcePath)) {
       print('$sourcePath is not a Dart file');
       return ErrorSeverity.ERROR;
     }
     // start analysis
-    _ErrorFormatter formatter = new _ErrorFormatter(options.machineFormat ? stderr : stdout, options);
+    ErrorFormatter formatter = new ErrorFormatter(options.machineFormat ? stderr : stdout, options);
     formatter.startAnalysis();
     // do analyze
-    _AnalyzerImpl analyzer = new _AnalyzerImpl(options);
+    AnalyzerImpl analyzer = new AnalyzerImpl(options);
     analyzer.analyze(sourcePath);
     // pring errors
     formatter.formatErrors(analyzer.errorInfos);
     // prepare status
     ErrorSeverity status = analyzer.maxErrorSeverity;
     if (status == ErrorSeverity.WARNING && options.warningsAreFatal) {
       status = ErrorSeverity.ERROR;
     }
     return status;
   }
@@ skipping 49 matching lines @@
         stdout.writeln('>>> TEST $resultPassString ${stopwatch.elapsedMilliseconds}ms');
       } catch (e, stackTrace) {
         stderr.writeln(e);
         stderr.writeln(stackTrace);
         stderr.writeln('>>> EOF STDERR');
         stdout.writeln('>>> TEST CRASH');
       }
     });
   }
 }