Create a compiler_unsupported package in pkg.

pkg/compiler_unsupported/tool/create_library.py

+#!/usr/bin/env python
+#
+# Copyright (c) 2014, 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.
+#
+# Create the compiler_unsupported package. This will copy the
+# sdk/lib/_internal/compiler directory and the libraries.dart file into lib/.
+#
+# Usage: create_library.py
+
+import os
+import re
+import shutil
+import sys
+
+from os.path import dirname, join
+
+
+def ReplaceInFiles(paths, subs):
+  '''Reads a series of files, applies a series of substitutions to each, and
+     saves them back out. subs should be a list of (pattern, replace) tuples.'''
+  for path in paths:
+    contents = open(path).read()
+    for pattern, replace in subs:
+      contents = re.sub(pattern, replace, contents)
+    dest = open(path, 'w')
+    dest.write(contents)
+    dest.close()
+
+
+def RemoveFile(f):
+  if os.path.exists(f):
+    os.remove(f)
+
+
+def Main(argv):
+  # pkg/compiler_unsupported
+  HOME = dirname(dirname(os.path.realpath(__file__)))
+
+  # pkg/compiler_unsupported/lib
+  TARGET = join(HOME, 'lib')
+
+  # sdk/lib/_internal
+  SOURCE = join(dirname(dirname(HOME)), 'sdk', 'lib', '_internal')
+
+  # clean compiler_unsupported/lib
+  if not os.path.exists(TARGET):
+    os.mkdir(TARGET)
+  shutil.rmtree(join(TARGET, 'implementation'), True)
+  RemoveFile(join(TARGET, 'compiler.dart'))
+  RemoveFile(join(TARGET, 'libraries.dart'))
+
+  # copy dart2js code
+  shutil.copy(join(SOURCE, 'compiler', 'compiler.dart'), TARGET)
+  shutil.copy(join(SOURCE, 'libraries.dart'), TARGET)
+  shutil.copytree(
+      join(SOURCE, 'compiler', 'implementation'),
+      join(TARGET, 'implementation'))
+
+  # patch up the libraries.dart references
+  replace = [(r'\.\./\.\./libraries\.dart', r'\.\./libraries\.dart')]
+
+  for root, dirs, files in os.walk(join(TARGET, 'implementation')):
+    for name in files:
+      if name.endswith('.dart'):
+        ReplaceInFiles([join(root, name)], replace)
+
+
+if __name__ == '__main__':
+  sys.exit(Main(sys.argv))