Mojo: Mojom: Add AST types for imports and import lists.

mojo/public/tools/bindings/pylib/mojom/parse/ast.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Node objects for the AST for a Mojo IDL file."""
 
 # Note: For convenience of testing, you probably want to define __eq__() methods
 # for all node types; it's okay to be slightly lax (e.g., not compare filename
 # and lineno).
 
@@ skipping 65 matching lines @@
   def __eq__(self, other):
     return self.key == other.key and self.value == other.value
 
 
 class AttributeList(NodeListBase):
   """Represents a list attributes."""
 
   _list_item_type = Attribute
 
 
+class Import(NodeBase):
+  """Represents an import statement."""
+
+  def __init__(self, import_filename, **kwargs):
+    assert isinstance(import_filename, str)
+    NodeBase.__init__(self, **kwargs)
+    self.import_filename = import_filename
+
+  def __eq__(self, other):
+    return self.import_filename == other.import_filename
+
+
+class ImportList(NodeListBase):
+  """Represents a list (i.e., sequence) of import statements."""
+
+  _list_item_type = Import
+
+
 class Module(NodeBase):
   """Represents a module statement."""
 
   def __init__(self, name, attribute_list, **kwargs):
     # |name| is either none or a "wrapped identifier".
     assert name is None or isinstance(name, tuple)
     assert attribute_list is None or isinstance(attribute_list, AttributeList)
     NodeBase.__init__(self, **kwargs)
     self.name = name
     self.attribute_list = attribute_list
@@ skipping 28 matching lines @@
   def __eq__(self, other):
     return self.typename == other.typename and \
            self.name == other.name and \
            self.ordinal == other.ordinal
 
 
 class ParameterList(NodeListBase):
   """Represents a list of (method request or response) parameters."""
 
   _list_item_type = Parameter