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| 1 #!/usr/bin/python | 1 #!/usr/bin/python |
| 2 # | 2 # |
| 3 # Copyright 2014 The Chromium Authors. All rights reserved. | 3 # Copyright 2014 The Chromium Authors. All rights reserved. |
| 4 # Use of this source code is governed by a BSD-style license that can be | 4 # Use of this source code is governed by a BSD-style license that can be |
| 5 # found in the LICENSE file. | 5 # found in the LICENSE file. |
| 6 | 6 |
| 7 """Generates interface properties on global objects. | 7 """Generates interface properties on global objects. |
| 8 | 8 |
| 9 Concretely these are implemented as "constructor attributes", meaning | 9 Concretely these are implemented as "constructor attributes", meaning |
| 10 "attributes whose name ends with Constructor" (special-cased by code generator), | 10 "attributes whose name ends with Constructor" (special-cased by code generator), |
| 11 hence "global constructors" for short. | 11 hence "global constructors" for short. |
| 12 | 12 |
| 13 For reference on global objects, see: | 13 For reference on global objects, see: |
| 14 http://heycam.github.io/webidl/#Global | 14 http://heycam.github.io/webidl/#Global |
| 15 http://heycam.github.io/webidl/#Exposed | 15 http://heycam.github.io/webidl/#Exposed |
| 16 | 16 |
| 17 Design document: http://www.chromium.org/developers/design-documents/idl-build | 17 Design document: http://www.chromium.org/developers/design-documents/idl-build |
| 18 """ | 18 """ |
| 19 | 19 |
| 20 import itertools | 20 import itertools |
| 21 import optparse | 21 import optparse |
| 22 import os | 22 import os |
| 23 import cPickle as pickle | 23 import cPickle as pickle |
| 24 import re | 24 import re |
| 25 import sys | 25 import sys |
| 26 | 26 |
| 27 from collections import defaultdict | 27 from collections import defaultdict |
| 28 from utilities import get_file_contents, idl_filename_to_interface_name, read_fi
le_to_list, write_file, get_interface_extended_attributes_from_idl, is_callback_
interface_from_idl | 28 from utilities import get_file_contents, idl_filename_to_interface_name, read_fi
le_to_list, write_file, get_interface_extended_attributes_from_idl, is_callback_
interface_from_idl, is_dictionary_from_idl |
| 29 | 29 |
| 30 interface_name_to_global_names = {} | 30 interface_name_to_global_names = {} |
| 31 global_name_to_constructors = defaultdict(list) | 31 global_name_to_constructors = defaultdict(list) |
| 32 | 32 |
| 33 | 33 |
| 34 HEADER_FORMAT = """// Stub header file for {{idl_basename}} | 34 HEADER_FORMAT = """// Stub header file for {{idl_basename}} |
| 35 // Required because the IDL compiler assumes that a corresponding header file | 35 // Required because the IDL compiler assumes that a corresponding header file |
| 36 // exists for each IDL file. | 36 // exists for each IDL file. |
| 37 """ | 37 """ |
| 38 | 38 |
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| 71 full_path = os.path.realpath(idl_filename) | 71 full_path = os.path.realpath(idl_filename) |
| 72 idl_file_contents = get_file_contents(full_path) | 72 idl_file_contents = get_file_contents(full_path) |
| 73 extended_attributes = get_interface_extended_attributes_from_idl(idl_file_co
ntents) | 73 extended_attributes = get_interface_extended_attributes_from_idl(idl_file_co
ntents) |
| 74 | 74 |
| 75 # An interface property is produced for every non-callback interface | 75 # An interface property is produced for every non-callback interface |
| 76 # that does not have [NoInterfaceObject]. | 76 # that does not have [NoInterfaceObject]. |
| 77 # Callback interfaces with constants also have interface properties, | 77 # Callback interfaces with constants also have interface properties, |
| 78 # but there are none of these in Blink. | 78 # but there are none of these in Blink. |
| 79 # http://heycam.github.io/webidl/#es-interfaces | 79 # http://heycam.github.io/webidl/#es-interfaces |
| 80 if (is_callback_interface_from_idl(idl_file_contents) or | 80 if (is_callback_interface_from_idl(idl_file_contents) or |
| 81 is_dictionary_from_idl(idl_file_contents) or |
| 81 'NoInterfaceObject' in extended_attributes): | 82 'NoInterfaceObject' in extended_attributes): |
| 82 return | 83 return |
| 83 | 84 |
| 84 # The [Exposed] extended attribute MUST take an identifier list. Each | 85 # The [Exposed] extended attribute MUST take an identifier list. Each |
| 85 # identifier in the list MUST be a global name. An interface or interface | 86 # identifier in the list MUST be a global name. An interface or interface |
| 86 # member the extended attribute applies to will be exposed only on objects | 87 # member the extended attribute applies to will be exposed only on objects |
| 87 # associated with ECMAScript global environments whose global object | 88 # associated with ECMAScript global environments whose global object |
| 88 # implements an interface that has a matching global name. | 89 # implements an interface that has a matching global name. |
| 89 # FIXME: In spec names are comma-separated, but that makes parsing very | 90 # FIXME: In spec names are comma-separated, but that makes parsing very |
| 90 # difficult (https://www.w3.org/Bugs/Public/show_bug.cgi?id=24959). | 91 # difficult (https://www.w3.org/Bugs/Public/show_bug.cgi?id=24959). |
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| 175 constructors = interface_name_to_constructors(interface_name) | 176 constructors = interface_name_to_constructors(interface_name) |
| 176 write_global_constructors_partial_interface( | 177 write_global_constructors_partial_interface( |
| 177 interface_name, | 178 interface_name, |
| 178 idl_filename, | 179 idl_filename, |
| 179 constructors, | 180 constructors, |
| 180 options.write_file_only_if_changed) | 181 options.write_file_only_if_changed) |
| 181 | 182 |
| 182 | 183 |
| 183 if __name__ == '__main__': | 184 if __name__ == '__main__': |
| 184 sys.exit(main()) | 185 sys.exit(main()) |
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