remove node.js dependency by running the frog compiler in

tools/testing/frogpad/frogpad.py

Index: tools/testing/frogpad/frogpad.py
diff --git a/tools/testing/frogpad/frogpad.py b/tools/testing/frogpad/frogpad.py
index c9f1f3a8a3fd208e20b14be2dce3e4b13cd1d3e4..33cce2e57072371e0eeaeede2f20da2e0a088838 100755
--- a/tools/testing/frogpad/frogpad.py
+++ b/tools/testing/frogpad/frogpad.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 
 # 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
@@ -130,6 +130,7 @@ DART_LIBRARIES = {
     "dom": "../client/dom/frog/dom_frog.dart",
     "html": "../client/html/release/html.dart",
     "htmlimpl": "../client/html/release/htmlimpl.dart",
+    "isolate": "../lib/isolate/isolate_frog.dart",
     "json": "../lib/json/json_frog.dart"
 }
 
@@ -144,8 +145,8 @@ class Pad(object):
     parser = optparse.OptionParser(usage=
       "%prog [options] file_to_compile.dart"
     )
-    parser.add_option("-r", "--rebuild",  action="store_true",
-        help="forces rebuild of the frogpad javascript")
+    parser.add_option("-f", "--frogpad_js",
+        help="location of frogpad.js file")
     parser.add_option("-o", "--out",
         help="name of javascript output file")
     parser.add_option("-v", "--verbose", action="store_true",
@@ -177,8 +178,14 @@ class Pad(object):
     logging.debug("frog_dir: '%s'" % self.frog_dir)
     logging.debug("frogpad_dir: '%s'" % self.frogpad_dir)
 
-    # name of frogpad_js file
-    self.frogpad_js = os.path.join(self.frogpad_dir, FROGPAD_JS)
+    # location frogpad.js file
+    if not options.frogpad_js:
+      raise Exception("--frogpad_js is required")
+
+    if not os.path.exists(options.frogpad_js):
+      raise FileNotFoundException(options.frogpad_js)
+
+    self.frogpad_js = options.frogpad_js
 
     if options.out:
       # user has specified an output file
@@ -201,12 +208,6 @@ class Pad(object):
     # map from script tag id to File object
     self.id_to_file = {}
 
-    if not os.path.exists(self.frogpad_js):
-      options.rebuild = True
-
-    if options.rebuild:
-      self.build_frogpad_js()
-
     self.load_libraries()
     self.load_file(self.main_file)
 
@@ -219,42 +220,6 @@ class Pad(object):
     line_count = len(js.splitlines())
     logging.info("generated '%s' (%d lines)", self.js_file, line_count)
 
-  def build_frogpad_js(self):
-    dart_vm = os.path.join(self.dart_dir, "out/Release_ia32/dart")
-    check_exists(dart_vm)
-
-    frogc_dart = os.path.join(self.frog_dir, "frogc.dart")
-    frogpad_dart = os.path.join(self.frogpad_dir, "frogpad.dart")
-    check_exists(frogc_dart)
-    check_exists(frogpad_dart)
-
-    args = []
-    args.append(dart_vm)
-
-    # command line arguments for the dart vm
-
-    # We leave out --enable_type_checks here for speed.
-    #    args.append("--enable_type_checks")
-
-    args.append("--enable_asserts")
-
-    # The dart program we're going to run on the dart vm.
-    args.append(frogc_dart)
-
-    # Command line arguments for frogc.dart
-    args.append("--libdir=%s/lib" % self.frog_dir)
-    args.append("--compile-only")
-    args.append("--enable_type_checks")
-    args.append("--enable_asserts")
-    args.append("--out=%s" % self.frogpad_js)
-
-    # The dart program that we want frogc.dart to compile.
-    args.append(frogpad_dart)
-    logging.info("generating '%s'" % self.frogpad_js)
-
-    run_command(args)
-    check_exists(self.frogpad_js)
-
   def generate_html(self):
     tags = []
     for f in self.id_to_file.values():