Visit all components of dotted library name. Fixes #109.

lib/src/source_visitor.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 dart_style.src.source_visitor;
 
 import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/src/generated/scanner.dart';
 import 'package:analyzer/src/generated/source.dart';
 
@@ skipping 790 matching lines @@
 
   visitLibraryDirective(LibraryDirective node) {
     visitDeclarationMetadata(node.metadata);
     token(node.keyword);
     space();
     visit(node.name);
     token(node.semicolon);
   }
 
   visitLibraryIdentifier(LibraryIdentifier node) {
-    token(node.beginToken);
+    visit(node.components.first);
+    for (var component in node.components.skip(1)) {
+      token(component.beginToken.previous); // "."
+      visit(component);
+    }
   }
 
   visitListLiteral(ListLiteral node) {
     _visitCollectionLiteral(
         node, node.leftBracket, node.elements, node.rightBracket);
   }
 
   visitMapLiteral(MapLiteral node) {
     _visitCollectionLiteral(
         node, node.leftBracket, node.entries, node.rightBracket);
@@ skipping 743 matching lines @@
   /// Gets the 1-based line number that the beginning of [token] lies on.
   int _startLine(Token token) => _lineInfo.getLocation(token.offset).lineNumber;
 
   /// Gets the 1-based line number that the end of [token] lies on.
   int _endLine(Token token) => _lineInfo.getLocation(token.end).lineNumber;
 
   /// Gets the 1-based column number that the beginning of [token] lies on.
   int _startColumn(Token token) =>
       _lineInfo.getLocation(token.offset).columnNumber;
 }