Refactor analysis server code generation to re-use logic from analyzer.

pkg/analysis_server/tool/spec/check_all_test.dart

 // Copyright (c) 2014, 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 check.all;
 
 import 'dart:io';
 
+import 'package:analyzer/src/codegen/tools.dart';
 import 'package:path/path.dart';
 
-import 'codegen_tools.dart';
 import 'generate_all.dart';
 
 /**
  * Check that all targets have been code generated.  If they haven't tell the
  * user to run generate_all.dart.
  */
 main() {
   String script = Platform.script.toFilePath(windows: Platform.isWindows);
-  Directory.current = new Directory(dirname(script));
-  bool generateAllNeeded = false;
-  for (GeneratedContent generatedContent in allTargets) {
-    if (!generatedContent.check()) {
-      print(
-          '${generatedContent.outputFile.absolute} does not have expected contents.');
-      generateAllNeeded = true;
-    }
-  }
-  if (generateAllNeeded) {
-    print('Please regenerate using:');
-    String executable = Platform.executable;
-    String packageRoot = '';
-    if (Platform.packageRoot.isNotEmpty) {
-      packageRoot = ' --package-root=${Platform.packageRoot}';
-    }
-    String generateScript = join(dirname(script), 'generate_all.dart');
-    print('  $executable$packageRoot $generateScript');
-    exit(1);
-  } else {
-    print('All generated files up to date.');
-  }
+  String pkgPath = normalize(join(dirname(script), '..', '..'));
+  GeneratedContent.checkAll(pkgPath, 'tool/spec/generate_all.dart', allTargets);
 }