add --x-package-warnings-prefix option to dartanalyzer

pkg/analyzer_cli/lib/src/perf_report.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.perf_report;
 
 import 'dart:convert' show JsonEncoder;
 import 'dart:io' show File, Platform;
 
 import 'package:analyzer/src/generated/utilities_general.dart'
     show PerformanceTag;
 import 'package:analyzer/task/model.dart' show AnalysisTask;
+import 'package:analyzer_cli/src/error_formatter.dart';
 import 'package:analyzer_cli/src/options.dart' show CommandLineOptions;
+import 'package:analyzer/src/generated/engine.dart' show AnalysisContext;
 
 const _JSON = const JsonEncoder.withIndent("  ");
 
 bool _isCheckedMode = () {
   bool x = true;
   try {
     // Trigger an exception if we're in checked mode.
     x = "" as dynamic;
     return x != ""; // return false; suppress unused variable warning
   } catch (e) {
     return true;
   }
 }();
 
 String _osType = () {
   if (Platform.isLinux) {
     return "linux";
   } else if (Platform.isMacOS) {
     return "mac";
   } else if (Platform.isWindows) {
     return "windows";
   } else if (Platform.isAndroid) {
     return "android";
   } else {
     return "unknown";
   }
 }();
 
-String makePerfReport(int startTime, int endTime, CommandLineOptions options) {
+String makePerfReport(int startTime, int endTime, CommandLineOptions options,
+    AnalysisContext context) {
   int totalTime = endTime - startTime;
   int otherTime = totalTime;
 
   var platformJson = <String, dynamic>{
     'osType': _osType,
     'dartSdkVersion': Platform.version,
     'checkedMode': _isCheckedMode,
   };
 
   var optionsJson = <String, dynamic>{
     'dartSdkPath': options.dartSdkPath,
     'strongMode': options.strongMode,
     'showPackageWarnings': options.showPackageWarnings,
+    'showPackageWarningsPrefix': options.showPackageWarningsPrefix,
     'showSdkWarnings': options.showSdkWarnings,
     'definedVariables': options.definedVariables,
     'packageRootPath': options.packageRootPath,
     'packageConfigPath': options.packageConfigPath,
     'sourceFiles': options.sourceFiles,
   };
 
   // Convert performance tags to JSON representation.
   var perfTagsJson = <String, dynamic>{};
   for (PerformanceTag tag in PerformanceTag.all) {
@@ skipping 16 matching lines @@
     taskRows.add(new _TaskRow(key.toString(), time, count));
   }
   taskRows.sort((a, b) => b.time.compareTo(a.time));
 
   var reportJson = <String, dynamic>{
     'perfReportVersion': 0,
     'platform': platformJson,
     'options': optionsJson,
     'totalElapsedTime': totalTime,
     'totalTaskTime': totalTaskTime,
+    'analyzedFiles': context.sources.length,
+    'generatedDiagnostics': ErrorFormatter.inputErrorCount,
     'performanceTags': perfTagsJson,
     'tasks': taskRows.map((r) => r.toJson()).toList(),
   };
 
   return _JSON.convert(reportJson);
 }
 
 class _TaskRow {
   final String name;
   final int time;
   final int count;
   _TaskRow(this.name, this.time, this.count);
 
   Map toJson() => <String, dynamic>{'name': name, 'time': time, 'count': count};
 }