[Bindings] Do not depend on IDL files to detect target component

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

 #!/usr/bin/python
 # Copyright (C) 2013 Google Inc. All rights reserved.
 #
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 # 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.
 
+# pylint: disable=W0403
+
 """Compile an .idl file to Blink V8 bindings (.h and .cpp files).
 
 Design doc: http://www.chromium.org/developers/design-documents/idl-compiler
 """
 
 import abc
 from optparse import OptionParser
 import os
 import cPickle as pickle
 import sys
 
-from code_generator_v8 import CodeGeneratorDictionaryImpl, CodeGeneratorV8, CodeGeneratorUnionType, CodeGeneratorCallbackFunction  # pylint: disable=W0403
+from code_generator_v8 import CodeGeneratorDictionaryImpl
+from code_generator_v8 import CodeGeneratorV8
+from code_generator_v8 import CodeGeneratorUnionType
+from code_generator_v8 import CodeGeneratorCallbackFunction
 from idl_reader import IdlReader
-from utilities import create_component_info_provider, read_idl_files_list_from_file, write_file, idl_filename_to_component
+from utilities import create_component_info_provider
+from utilities import read_idl_files_list_from_file
+from utilities import write_file
 
 
 def parse_options():
     parser = OptionParser()
     parser.add_option('--cache-directory',
                       help='cache directory, defaults to output directory')
     parser.add_option('--generate-impl',
                       action="store_true", default=False)
     parser.add_option('--output-directory')
     parser.add_option('--impl-output-directory')
     parser.add_option('--info-dir')
     parser.add_option('--write-file-only-if-changed', type='int')
     # FIXME: We should always explicitly specify --target-component and
     # remove the default behavior.
     parser.add_option('--target-component',
+                      type='choice',
+                      choices=['core', 'modules'],
                       help='target component to generate code, defaults to '
                       'component of input idl file')
     # ensure output comes last, so command line easy to parse via regexes
     parser.disable_interspersed_args()
 
     options, args = parser.parse_args()
     if options.output_directory is None:
         parser.error('Must specify output directory using --output-directory.')
     options.write_file_only_if_changed = bool(options.write_file_only_if_changed)
     if len(args) != 1:
@@ skipping 35 matching lines @@
         self.code_generator = code_generator
         self.info_provider = info_provider
         self.only_if_changed = only_if_changed
         self.output_directory = output_directory
         self.target_component = target_component
         self.reader = IdlReader(info_provider.interfaces_info, cache_directory)
 
     def compile_and_write(self, idl_filename):
         interface_name = idl_filename_to_interface_name(idl_filename)
         definitions = self.reader.read_idl_definitions(idl_filename)
-        target_component = self.target_component or idl_filename_to_component(idl_filename)
-        target_definitions = definitions[target_component]
+        target_definitions = definitions[self.target_component]
         output_code_list = self.code_generator.generate_code(
             target_definitions, interface_name)
         for output_path, output_code in output_code_list:
             write_file(output_code, output_path, self.only_if_changed)
 
     @abc.abstractmethod
     def compile_file(self, idl_filename):
         pass
 
 
@@ skipping 30 matching lines @@
     idl_compiler.compile_file(input_filename)
 
 
 def generate_dictionary_impl(options, input_filename):
     info_provider = create_component_info_provider(
         options.info_dir, options.target_component)
     idl_compiler = IdlCompilerDictionaryImpl(
         options.impl_output_directory,
         cache_directory=options.cache_directory,
         info_provider=info_provider,
-        only_if_changed=options.write_file_only_if_changed)
+        only_if_changed=options.write_file_only_if_changed,
+        target_component=options.target_component)
 
     idl_filenames = read_idl_files_list_from_file(input_filename,
                                                   is_gyp_format=True)
     for idl_filename in idl_filenames:
         idl_compiler.compile_file(idl_filename)
 
 
 def generate_union_type_containers(options):
     info_provider = create_component_info_provider(
         options.info_dir, options.target_component)
@@ skipping 31 matching lines @@
         generate_dictionary_impl(options, input_filename)
         generate_union_type_containers(options)
         generate_callback_function_impl(options)
     else:
         # |input_filename| should be a path of an IDL file.
         generate_bindings(options, input_filename)
 
 
 if __name__ == '__main__':
     sys.exit(main())