[bindings] partial interfaces should not violate componentization

Source/bindings/scripts/generate_init_partial_interfaces.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.
+
+"""Generate initialize .cpp file for modules' partial interfaces of core interfaces.
+"""
+
+import cPickle as pickle
+from optparse import OptionParser
+import os
+import posixpath
+import sys
+from utilities import write_file
+
+from aggregate_generated_bindings import extract_meta_data, write_content, format_conditional, filter_partial_interface
+from idl_reader import IdlReader
+from utilities import read_idl_files_list_from_file
+
+
+_COPYRIGHT = """// 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.
+
+"""
+
+_INIT_PARTIAL_INTERFACE = """%s
+#include "config.h"
+
+%s
+
+namespace blink {
+
+void initModulesPartialInterfaces()
+{
+%s
+}
+
+} // namespace blink
+"""
+
+
+def parse_options():
+    usage = 'Usage: %prog [options]'
+    parser = OptionParser(usage=usage)
+    parser.add_option('--cache-directory',
+                      help='cache directory, defaults to output directory')
+    parser.add_option('--idl-files-list', help="a text file containing the IDL file paths, so the command line doesn't exceed OS length limits.")
+    parser.add_option('--write-file-only-if-changed', type='int', help='if true, do not write an output file if it would be identical to the existing one, which avoids unnecessary rebuilds in ninja')
+    parser.add_option('--interfaces-info')
+    parser.add_option('--output')
+    # ensure output comes last, so command line easy to parse via regexes
+    parser.disable_interspersed_args()

[bashi, 2014/10/10 09:48:11]

It seems that we have a lot of copy-and-paste code like this. I understand there
are subtle differences but it would be great if we could merge them.

[tasak, 2014/10/10 11:43:40]

Removed cache-directory, interfaces-info.

+
+    options, args = parser.parse_args()
+    if options.output is None:
+        parser.error('Must specify output file using --output.')
+    if options.idl_files_list is None:
+        parser.error('Must specify idl files list file using --idl-files-list.')
+    if options.interfaces_info is None:
+        parser.error('Must specify interfaces info using --interfaces-info.')
+    if options.write_file_only_if_changed is None:
+        parser.error('Must specify whether file is only written if changed using --write-file-only-if-changed.')
+    options.write_file_only_if_changed = bool(options.write_file_only_if_changed)
+    return options
+
+
+def main():
+    options = parse_options()
+
+    idl_file_names = read_idl_files_list_from_file(options.idl_files_list)
+
+    with open(options.interfaces_info) as interfaces_info_file:
+        interfaces_info = pickle.load(interfaces_info_file)
+    idl_file_names = filter_partial_interface(idl_file_names, interfaces_info, options.cache_directory)
+
+    header_files = []

[bashi, 2014/10/10 09:48:11]

unused?

[tasak, 2014/10/10 11:43:40]

Done.

+    initialize_calls = []

[bashi, 2014/10/10 09:48:11]

remove? (the same as L86)

[tasak, 2014/10/10 11:43:40]

Done.

+    meta_data_list = extract_meta_data(idl_file_names)
+    for meta_data in meta_data_list:
+        meta_data['interface_name'] = 'V8%sPartial' % meta_data['name']
+
+    meta_data_list.sort(key=lambda meta_data: meta_data['interface_name'])
+
+    includes = []
+    initialize_calls = []
+    for meta_data in meta_data_list:
+        conditional = meta_data['conditional']
+        if conditional:
+            conditional_code = '#if %s' % format_conditional(conditional)
+            includes.append(conditional_code)
+            initialize_calls.append(conditional_code)
+
+        includes.append('#include "bindings/modules/v8/%s.h"' % meta_data['interface_name'])
+        initialize_calls.append('    %s::initialize();' % meta_data['interface_name'])
+
+        if conditional:
+            includes.append('#endif')
+            initialize_calls.append('#endif')
+
+    content = _INIT_PARTIAL_INTERFACE % (
+        _COPYRIGHT,
+        '\n'.join(includes),
+        '\n'.join(initialize_calls))
+
+    write_file(content, options.output,
+               only_if_changed=options.write_file_only_if_changed)
+
+
+if __name__ == '__main__':
+    sys.exit(main())