Output javadoc for enumerated values; suppress empty javadoc.

pkg/analysis_server/tool/spec/codegen_tools.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.
 
 /**
  * Tools for code generation.
  */
 library codegen.tools;
 
 import 'dart:io';
@@ skipping 97 matching lines @@
    */
   int get indentWidth => _state.nextIndent.length;
 
   /**
    * Generate a doc comment based on the HTML in [docs].
    *
    * If [javadocStyle] is true, then the output is compatable with Javadoc,
    * which understands certain HTML constructs.
    */
   void docComment(List<dom.Node> docs, {int width: 79, bool javadocStyle: false}) {
+    if (containsOnlyWhitespace(docs)) {
+      return;
+    }
     writeln('/**');
     indentBy(' * ', () {
       write(nodesToText(docs, width - _state.indent.length, javadocStyle));
     });
     writeln(' */');
   }
 
   void outputHeader({bool javaStyle: false}) {
     String header;
     if (javaStyle) {
@@ skipping 270 matching lines @@
   @override
   void generate() {
     // TODO (jwren) Delete contents in the directory first.
     Map<String, FileContentsComputer> map = directoryContentsComputer();
     map.forEach((String file, FileContentsComputer fileContentsComputer) {
       File outputFile = new File(joinAll(posix.split(outputDirPath + file)));
       outputFile.writeAsStringSync(fileContentsComputer());
     });
   }
 }