Speed up interop patch file creation

tools/dom/scripts/dartdomgenerator.py

 #!/usr/bin/python
 # 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 is the entry point to create Dart APIs from the IDL database."""
 
 import css_code_generator
 import os
 import sys
@@ skipping 216 matching lines @@
   command = ' '.join(['cd', library_dir, ';',
                       copy_dart_script, output_dir, library_filename])
   subprocess.call([command], shell=True)
 
 def UpdateCssProperties():
   """Regenerate the CssStyleDeclaration template file with the current CSS
   properties."""
   _logger.info('Updating Css Properties.')
   css_code_generator.GenerateCssTemplateFile()
 
+CACHED_PATCHES = """
+// START_OF_CACHED_PATCHES
+// Copyright (c) 2013, 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.
+
+// DO NOT EDIT GENERATED FILE.
+
+library cached_patches;
+
+var cached_patches = {
+    /********************************************************
+     *****                                              *****
+     *****  MUST RUN tools/dartium/generate_patches.sh  *****
+     *****                                              *****
+     ********************************************************/
+};
+"""
+
 def main():
   parser = optparse.OptionParser()
   parser.add_option('--parallel', dest='parallel',
                     action='store_true', default=False,
                     help='Use fremontcut in parallel mode.')
   parser.add_option('--systems', dest='systems',
                     action='store', type='string',
                     default='htmldart2js,htmldartium,_blink',
                     help='Systems to generate (htmldart2js, htmldartium, _blink)')
   parser.add_option('--output-dir', dest='output_dir',
@@ skipping 73 matching lines @@
 
   if 'htmldartium' in systems:
     _logger.info('Generating dartium single files.')
     file_generation_start_time = time.time()
 
     for library_name in HTML_LIBRARY_NAMES:
       GenerateSingleFile(
           os.path.join(dartium_output_dir, '%s_dartium.dart' % library_name),
           os.path.join('..', '..', '..', 'sdk', 'lib', library_name, 'dartium'))
 
+    # Blow away the cached_patches.dart needs to be re-generated for Dartium
+    # see tools/dartium/generate_patches.sh
+    cached_patches_filename = os.path.join('..', '..', '..', 'sdk', 'lib', 'js', 'dartium',
+                                           'cached_patches.dart')
+    cached_patches = open(cached_patches_filename, 'w')
+    cached_patches.write(CACHED_PATCHES);
+    cached_patches.close()
+
   if '_blink' in systems:
     _logger.info('Generating dartium _blink file.')
     file_generation_start_time = time.time()
 
     GenerateSingleFile(
         os.path.join(dartium_output_dir, '%s_dartium.dart' % '_blink'),
         os.path.join('..', '..', '..', 'sdk', 'lib', '_blink', 'dartium'))
 
   print '\nGenerating single file %s seconds' % round(time.time() - file_generation_start_time, 2)
 
   end_time = time.time()
 
   print '\nDone (dartdomgenerator) %s seconds' % round(end_time - start_time, 2)
 
 if __name__ == '__main__':
   sys.exit(main())