"Reverting 14829-14832"

tools/testing/dart/multitest.dart

 // Copyright (c) 2012, 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("multitest");
 
 #import("dart:io");
 #import("test_suite.dart");
 
 // Multitests are Dart test scripts containing lines of the form
@@ skipping 141 matching lines @@
 }
 
 // Find all relative imports and copy them into the dir that contains
 // the generated tests.
 Set<Path> _findAllRelativeImports(Path topLibrary) {
   Set<Path> toSearch = new Set<Path>.from([topLibrary]);
   Set<Path> foundImports = new HashSet<Path>();
   Path libraryDir = topLibrary.directoryPath;
   // Matches #import( or #source( followed by " or ' followed by anything
   // except dart:, dart-ext: or /, at the beginning of a line.
-  RegExp relativeImportRegExp = new RegExp(
+  RegExp relativeImportRegExp = const RegExp(
       '^#(import|source)[(]["\'](?!(dart:|dart-ext:|/))([^"\']*)["\']');
   while (!toSearch.isEmpty) {
     var thisPass = toSearch;
     toSearch = new HashSet<Path>();
     for (Path filename in thisPass) {
       File f = new File.fromPath(filename);
       for (String line in f.readAsLinesSync()) {
         Match match = relativeImportRegExp.firstMatch(line);
         if (match != null) {
           Path relativePath = new Path(match.group(3));
@@ skipping 86 matching lines @@
     // TestSuite.forDirectory.
     split.removeLast();
   }
   String path = '${generatedTestDir.path}/${split.last}';
   Directory dir = new Directory(path);
   if (!dir.existsSync()) {
     dir.createSync();
   }
   return new Path.fromNative(new File(path).fullPathSync());
 }