remove node.js dependency by running the frog compiler in

frog/scripts/bootstrap/frogsh_bootstrap_wrapper.py

 # Copyright 2011 Google Inc. All Rights Reserved.
 
 import os
 import platform
 import shutil
 import stat
 import sys
 
 HOME = os.path.dirname(os.path.realpath(__file__))
 HOME = os.path.join(HOME, os.pardir, os.pardir)
 
-FROGSH_FALLBACK = """#!/bin/sh
-echo -en "\033[31mERROR\033[0m: Building frogsh in 'debug' mode requires "
-echo "building the dart"
-echo "runtime in 'release' mode. Retry building frogsh as follows:"
-echo " > rm $0"
-echo " > ./tools/build.py -m release runtime"
-echo " > ./tools/build.py -m debug frogsh"
-exit 1
-"""
-
 sys.path.append(HOME)
 import frog
 
+# Runs frog.dart on the dart vm to compile frogpad.dart to frogpad.js
 def main(args):
   product_dir = args[1]
-  js_out = os.path.join(product_dir, 'frog', 'bin', 'frogsh')
   vm = os.path.join(product_dir, 'dart')
-  id = platform.system()
-  if id == 'Windows' or id == 'Microsoft':
-    vm = vm + '.exe'
-    shutil.copy(os.path.join(HOME, 'scripts', 'bootstrap', 'frogsh.bat'),

[Emily Fortuna, 2012/03/06 00:37:52]

We don't have a DRT replacement for Windows yet, so we should be deleting this
here. This is what allows us to run frogsh on Windows.

-                js_out + '.bat')
-  frog_args = ['frog.py', '--vm=' + vm,
-               '--js_cmd=node --crankshaft',
-               '--',
-               '--out=' + js_out, 'minfrog.dart']
+  frogpad_dart = os.path.join(product_dir, '..', '..',
+      'tools', 'testing',  'frogpad', 'frogpad.dart')
+  frogpad_js = os.path.join(product_dir, 'frog', 'bin', 'frogpad.js')
 
-  # TODO(ngeoffray): Compile frogsh without checks integrated.
-  # if js_out.find('Release') != -1:
-  exit_code = frog.main(frog_args)
+  if not os.path.exists(vm):
+    raise Exception("cannot find dart vm '%s'" % vm)
+
+  args = ['frog.py',
+          '--vm=' + vm,
+          '--',
+          '--out=' + frogpad_js,
+          frogpad_dart]
+
+  exit_code = frog.main(args)
   if exit_code:
-    if js_out.find('Release') != -1:
-      return exit_code
-    else:
-      with open(js_out, 'w') as f:
-        f.write(FROGSH_FALLBACK)
+    return exit_code
 
-  os.chmod(js_out, stat.S_IXUSR | stat.S_IXGRP | stat.S_IRUSR |
+  if not os.path.exists(frogpad_js):
+    raise Exception("didn't generate '%s'" % frogpad_js)
+
+  os.chmod(frogpad_js, stat.S_IXUSR | stat.S_IXGRP | stat.S_IRUSR |
            stat.S_IRGRP | stat.S_IWUSR)
   return 0
 
 
 if __name__ == '__main__':
   sys.exit(main(sys.argv))