Revert of [Bindings] Remove aggregation of generated binding code

third_party/WebKit/Source/bindings/scripts/aggregate_generated_bindings.py

Index: third_party/WebKit/Source/bindings/scripts/aggregate_generated_bindings.py
diff --git a/third_party/WebKit/Source/bindings/scripts/aggregate_generated_bindings.py b/third_party/WebKit/Source/bindings/scripts/aggregate_generated_bindings.py
new file mode 100755
index 0000000000000000000000000000000000000000..0e4b036352758b086072c3da39346f5b6df9832a
--- /dev/null
+++ b/third_party/WebKit/Source/bindings/scripts/aggregate_generated_bindings.py
@@ -0,0 +1,188 @@
+#!/usr/bin/python
+#
+# Copyright (C) 2009 Google Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Copyright (c) 2009 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 aggregate .cpp files that include multiple V8 binding .cpp files.
+
+This can be a single output file, to preserve symbol space; or multiple output
+files, to reduce maximum compilation unit size and allow parallel compilation.
+
+Usage:
+aggregate_generated_bindings.py --component-directory COMPONENT_DIR --input-file IDL_FILES_LIST OUTPUT_FILE1 OUTPUT_FILE2 ...
+
+COMPONENT_DIR is the relative directory of a component, e.g., 'core', 'modules'.
+IDL_FILES_LIST is a text file containing the IDL file paths, so the command
+line doesn't exceed OS length limits.
+OUTPUT_FILE1 etc. are filenames of output files.
+
+Design doc: http://www.chromium.org/developers/design-documents/idl-build
+"""
+
+import errno
+import optparse
+import os
+import re
+import sys
+
+from utilities import (should_generate_impl_file_from_idl,
+                       get_file_contents,
+                       idl_filename_to_interface_name,
+                       read_idl_files_list_from_file)
+
+COPYRIGHT_TEMPLATE = """/*
+ * THIS FILE WAS AUTOMATICALLY GENERATED, DO NOT EDIT.
+ *
+ * This file was generated by the action_derivedsourcesallinone.py script.
+ *
+ * Copyright (C) 2009 Google Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+"""
+
+
+def extract_meta_data(file_paths):
+    """Extracts interface name from each IDL file."""
+    meta_data_list = []
+
+    for file_path in file_paths:
+        if not file_path.endswith('.idl'):
+            print 'WARNING: non-IDL file passed: "%s"' % file_path
+            continue
+        if not os.path.exists(file_path):
+            print 'WARNING: file not found: "%s"' % file_path
+            continue
+
+        idl_file_contents = get_file_contents(file_path)
+        if not should_generate_impl_file_from_idl(idl_file_contents):
+            continue
+
+        # Extract interface name from file name
+        interface_name = idl_filename_to_interface_name(file_path)
+
+        meta_data = {
+            'name': interface_name,
+        }
+        meta_data_list.append(meta_data)
+
+    return meta_data_list
+
+
+def generate_content(component_dir, aggregate_partial_interfaces, files_meta_data_this_partition):
+    # Add fixed content.
+    output = [COPYRIGHT_TEMPLATE,
+              '#define NO_IMPLICIT_ATOMICSTRING\n\n']
+
+    # List all includes.
+    files_meta_data_this_partition.sort()
+    suffix = 'Partial' if aggregate_partial_interfaces else ''
+    for meta_data in files_meta_data_this_partition:
+        cpp_filename = 'V8%s%s.cpp' % (meta_data['name'], suffix)
+
+        output.append('#include "bindings/%s/v8/%s"\n' %
+                      (component_dir, cpp_filename))
+
+    return ''.join(output)
+
+
+def write_content(content, output_file_name):
+    parent_path, file_name = os.path.split(output_file_name)
+    if not os.path.exists(parent_path):
+        print 'Creating directory: %s' % parent_path
+        os.makedirs(parent_path)
+    with open(output_file_name, 'w') as f:
+        f.write(content)
+
+
+def parse_options():
+    parser = optparse.OptionParser()
+    parser.add_option('--component-directory')
+    parser.add_option('--input-file',
+                      help='A file name which lists up target IDL file names.',
+                      type='string')
+    parser.add_option('--partial',
+                      help='To parse partial IDLs, add this option.',
+                      action='store_true',
+                      dest='partial',
+                      default=False)
+
+    options, output_file_names = parser.parse_args()
+    if len(output_file_names) == 0:
+        raise Exception('Expected at least one output file name(s).')
+    if not options.input_file:
+        raise Exception('No input file is specified.')
+
+    return options, output_file_names
+
+
+def main():
+    options, output_file_names = parse_options()
+    component_dir = options.component_directory
+    input_file_name = options.input_file
+    aggregate_partial_interfaces = options.partial
+    idl_file_names = read_idl_files_list_from_file(input_file_name,
+                                                   is_gyp_format=True)
+
+    files_meta_data = extract_meta_data(idl_file_names)
+    total_partitions = len(output_file_names)
+    for partition, file_name in enumerate(output_file_names):
+        files_meta_data_this_partition = [
+                meta_data for meta_data in files_meta_data
+                if hash(meta_data['name']) % total_partitions == partition]
+        file_contents = generate_content(component_dir,
+                                         aggregate_partial_interfaces,
+                                         files_meta_data_this_partition)
+        write_content(file_contents, file_name)
+
+
+if __name__ == '__main__':
+    sys.exit(main())