Tweaks to warning level and reporting

lib/src/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.
 
 /// Summarizes the information produced by the checker.
 library dev_compiler.src.report;
 
 import 'dart:math' show max;
 
 import 'package:analyzer/src/generated/source.dart' show Source;
@@ skipping 180 matching lines @@
 
 /// Produces a string representation of the summary.
 String summaryToString(GlobalSummary summary) {
   var counter = new _Counter();
   summary.accept(counter);
 
   var table = new _Table();
   // Declare columns and add header
   table.declareColumn('package');
   table.declareColumn('AnalyzerError', abbreviate: true);
-  infoTypes.forEach((type) => table.declareColumn('$type', abbreviate: true));
+  var activeInfoTypes =
+      infoTypes.where((type) => counter.totals['$type'] != null);
+  activeInfoTypes
+      .forEach((type) => table.declareColumn('$type', abbreviate: true));
   table.declareColumn('LinesOfCode', abbreviate: true);
   table.addHeader();
 
   // Add entries for each package
   appendCount(count) => table.addEntry(count == null ? 0 : count);
   for (var package in counter.errorCount.keys) {
     appendCount(package);
     appendCount(counter.errorCount[package]['AnalyzerError']);
-    infoTypes.forEach((e) => appendCount(counter.errorCount[package]['$e']));
+    activeInfoTypes
+        .forEach((e) => appendCount(counter.errorCount[package]['$e']));
     appendCount(counter.linesOfCode[package]);
   }
 
   // Add totals, percents and a new header for quick reference
   table.addEmptyRow();
   table.addHeader();
   table.addEntry('total');
   appendCount(counter.totals['AnalyzerError']);
-  infoTypes.forEach((type) => appendCount(counter.totals['$type']));
+  activeInfoTypes.forEach((type) => appendCount(counter.totals['$type']));
   appendCount(counter.totalLinesOfCode);
 
   appendPercent(count, total) {
     if (count == null) count = 0;
     var value = (count * 100 / total).toStringAsFixed(2);
     table.addEntry(value);
   }
 
   var totalLOC = counter.totalLinesOfCode;
   table.addEntry('%');
   appendPercent(counter.totals['AnalyzerError'], totalLOC);
-  infoTypes.forEach((type) => appendPercent(counter.totals['$type'], totalLOC));
+  activeInfoTypes
+      .forEach((type) => appendPercent(counter.totals['$type'], totalLOC));
   appendCount(100);
 
   return table.toString();
 }
 
 /// Helper class to combine all the information in table form.
 class _Table {
   int _totalColumns = 0;
   int get totalColumns => _totalColumns;
 
@@ skipping 134 matching lines @@
 
   visitMessage(MessageSummary message) {
     var kind = message.kind;
     errorCount.putIfAbsent(currentPackage, () => <String, int>{});
     errorCount[currentPackage].putIfAbsent(kind, () => 0);
     errorCount[currentPackage][kind]++;
     totals.putIfAbsent(kind, () => 0);
     totals[kind]++;
   }
 }