Raise error on wildcard import (#119)

compiler/stmt.py

@@ -364,6 +364,12 @@ class StatementVisitor(ast.NodeVisitor):
         self.block.bind_var(self.writer, asname, mod.expr)
 
   def visit_ImportFrom(self, node):
+    # Wildcard imports are not yet supported.
+    for alias in node.names:
+      if alias.name == '*':
+        msg = 'wildcard member import is not implemented: from %s import %s' % (
+            node.module, alias.name)
+        raise util.ParseError(node, msg)
     self._write_py_context(node.lineno)
     if node.module.startswith(_NATIVE_MODULE_PREFIX):
       values = [alias.name for alias in node.names]

compiler/stmt_test.py

@@ -332,6 +332,14 @@ class StatementVisitorTest(unittest.TestCase):
       self.assertRaisesRegexp(util.ParseError, want_regexp,
                               stmt.import_from_future, node)
 
+  def testImportWildcardMemberRaises(self):
+    regexp = r'wildcard member import is not implemented: from foo import *'
+    self.assertRaisesRegexp(util.ParseError, regexp, _ParseAndVisit,
+                            'from foo import *')
+    regexp = r'wildcard member import is not implemented: from __go__.foo import *'
+    self.assertRaisesRegexp(util.ParseError, regexp, _ParseAndVisit,
+                            'from __go__.foo import *')
+
   def testVisitFuture(self):
     testcases = [
         ('from __future__ import print_function',