Updated to Chrome 45 (2454) moved from SVN to git.

bindings/scripts/generate_global_constructors.py

 #!/usr/bin/python
 #
 # 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.
 
 """Generates interface properties on global objects.
 
 Concretely these are implemented as "constructor attributes", meaning
 "attributes whose name ends with Constructor" (special-cased by code generator),
 hence "global constructors" for short.
 
 For reference on global objects, see:
 http://heycam.github.io/webidl/#Global
 http://heycam.github.io/webidl/#Exposed
 
 Design document: http://www.chromium.org/developers/design-documents/idl-build
 """
 
 import itertools
 import optparse
 import os
 import cPickle as pickle
 import re
 import sys
 
+from v8_utilities import EXPOSED_EXECUTION_CONTEXT_METHOD
+
 from collections import defaultdict
-from utilities import get_file_contents, idl_filename_to_interface_name, read_file_to_list, write_file, get_interface_extended_attributes_from_idl, is_callback_interface_from_idl
+from utilities import should_generate_impl_file_from_idl, get_file_contents, idl_filename_to_interface_name, read_file_to_list, write_file, get_interface_extended_attributes_from_idl, get_interface_exposed_arguments, is_callback_interface_from_idl
 
 interface_name_to_global_names = {}
 global_name_to_constructors = defaultdict(list)
 
 
 HEADER_FORMAT = """// Stub header file for {{idl_basename}}
 // Required because the IDL compiler assumes that a corresponding header file
 // exists for each IDL file.
 """
 
@@ skipping 31 matching lines @@
     interface_name = idl_filename_to_interface_name(idl_filename)
     full_path = os.path.realpath(idl_filename)
     idl_file_contents = get_file_contents(full_path)
     extended_attributes = get_interface_extended_attributes_from_idl(idl_file_contents)
 
     # An interface property is produced for every non-callback interface
     # that does not have [NoInterfaceObject].
     # Callback interfaces with constants also have interface properties,
     # but there are none of these in Blink.
     # http://heycam.github.io/webidl/#es-interfaces
-    if (is_callback_interface_from_idl(idl_file_contents) or
+    if ((not should_generate_impl_file_from_idl(idl_file_contents)) or
+        is_callback_interface_from_idl(idl_file_contents) or
         'NoInterfaceObject' in extended_attributes):
         return
 
-    # The [Exposed] extended attribute MUST take an identifier list. Each
-    # identifier in the list MUST be a global name. An interface or interface
-    # member the extended attribute applies to will be exposed only on objects
-    # associated with ECMAScript global environments whose global object
-    # implements an interface that has a matching global name.
-    exposed_global_names = extended_attributes.get('Exposed', 'Window').strip('()').split(',')
-    new_constructors_list = generate_global_constructors_list(interface_name, extended_attributes)
-    for exposed_global_name in exposed_global_names:
-        global_name_to_constructors[exposed_global_name].extend(new_constructors_list)
+    exposed_arguments = get_interface_exposed_arguments(idl_file_contents)
+    if exposed_arguments:
+        # Exposed(Arguments) case
+        for argument in exposed_arguments:
+            if 'RuntimeEnabled' in extended_attributes:
+                raise ValueError('RuntimeEnabled should not be used with Exposed(Arguments)')
+            attributes = extended_attributes.copy()
+            attributes['RuntimeEnabled'] = argument['runtime_enabled']
+            new_constructors_list = generate_global_constructors_list(interface_name, attributes)
+            global_name_to_constructors[argument['exposed']].extend(new_constructors_list)
+    else:
+        # Exposed=env or Exposed=(env1,...) case
+        exposed_global_names = extended_attributes.get('Exposed', 'Window').strip('()').split(',')
+        new_constructors_list = generate_global_constructors_list(interface_name, extended_attributes)
+        for name in exposed_global_names:
+            global_name_to_constructors[name].extend(new_constructors_list)
 
 
 def generate_global_constructors_list(interface_name, extended_attributes):
     extended_attributes_list = [
             name + '=' + extended_attributes[name]
-            for name in 'Conditional', 'PerContextEnabled', 'RuntimeEnabled'
+            for name in 'Conditional', 'RuntimeEnabled'
             if name in extended_attributes]
     if extended_attributes_list:
         extended_string = '[%s] ' % ', '.join(extended_attributes_list)
     else:
         extended_string = ''
 
     attribute_string = 'attribute {interface_name}Constructor {interface_name}'.format(interface_name=interface_name)
     attributes_list = [extended_string + attribute_string]
 
     # In addition to the usual interface property, for every [NamedConstructor]
@@ skipping 42 matching lines @@
     interface_name_idl_filename = [(args[i], args[i + 1])
                                    for i in range(0, len(args), 2)]
 
     with open(options.global_objects_file) as global_objects_file:
         interface_name_to_global_names.update(pickle.load(global_objects_file))
 
     for idl_filename in idl_files:
         record_global_constructors(idl_filename)
 
     # Check for [Exposed] / [Global] mismatch.
-    known_global_names = frozenset(itertools.chain.from_iterable(interface_name_to_global_names.values()))
+    known_global_names = EXPOSED_EXECUTION_CONTEXT_METHOD.keys()
     exposed_global_names = frozenset(global_name_to_constructors)
     if not exposed_global_names.issubset(known_global_names):
         unknown_global_names = exposed_global_names.difference(known_global_names)
         raise ValueError('The following global names were used in '
                          '[Exposed=xxx] but do not match any [Global] / '
                          '[PrimaryGlobal] interface: %s'
                          % list(unknown_global_names))
 
     # Write partial interfaces containing constructor attributes for each
     # global interface.
     for interface_name, idl_filename in interface_name_idl_filename:
         constructors = interface_name_to_constructors(interface_name)
         write_global_constructors_partial_interface(
             interface_name,
             idl_filename,
             constructors,
             options.write_file_only_if_changed)
 
 
 if __name__ == '__main__':
     sys.exit(main())