Add the ability to run tests with several sets of VM flags

tools/utils.py

 # Copyright (c) 2011, 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.
 
 # This file contains a set of utilities functions used by other Python-based
 # scripts.
 
 import commands
 import os
 import platform
@@ skipping 126 matching lines @@
 
 def GetBuildRoot(target_os, mode=None, arch=None):
   if arch == 'dartc' and RUN_FROM_TOP_DIR: arch = ARCH_GUESS
   global BUILD_ROOT
   if mode:
     return os.path.join(BUILD_ROOT[target_os], GetBuildConf(mode, arch))
   else:
     return BUILD_ROOT[target_os]
 
 
+def RewritePathSeparator(path, workspace):
+  # Paths in test files are always specified using '/'
+  # as the path separator. Replace with the actual
+  # path separator before use.
+  if ('/' in path):
+    split_path = path.split('/')
+    path = os.sep.join(split_path)
+    path = os.path.join(workspace, path)
+    if not os.path.exists(path):
+      raise Exception(path)
+  return path
+
+
 def ParseTestOptions(pattern, source, workspace):
   match = pattern.search(source)
-  # Options should be a single line in the test case no splits.
   if match:
-    def rewrite(path, workspace):
-      # Paths in test files are always specified using '/'
-      # as the path separator. Replace with the actual
-      # path separator before use.
-      if ('/' in path):
-        split_path = path.split('/')
-        path = os.sep.join(split_path)
-        path = os.path.join(workspace, path)
-        if not os.path.exists(path):
-          raise Exception(path)
-      return path
-    return [rewrite(o, workspace) for o in match.group(1).split(' ')]
+    return [RewritePathSeparator(o, workspace) for o in match.group(1).split(' ')]
   else:
     return None
 
+
+def ParseTestOptionsMultiple(pattern, source, workspace):
+  matches = pattern.findall(source)
+  if matches:
+    result = []
+    for match in matches:
+      result.append(
+          [RewritePathSeparator(o, workspace) for o in match.split(' ')]);
+    return result
+  else:
+    return None
+
 
 def ConfigureJava():
   java_home = '/usr/libexec/java_home'
   if os.path.exists(java_home):
     proc = subprocess.Popen([java_home, '-v', '1.6+'],
                             stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE)
     (stdout, stderr) = proc.communicate()
     if proc.wait() != 0:
       raise ToolError('non-zero exit code from ' + java_home)
@@ skipping 42 matching lines @@
   def __init__(self, value):
     self.value = value
 
   def __str__(self):
     return repr(self.value)
 
 
 if __name__ == "__main__":
   import sys
   Main(sys.argv)