IDL: Add build target for IDL dictionary impl generation in core

Source/bindings/scripts/idl_compiler.py

Index: Source/bindings/scripts/idl_compiler.py
diff --git a/Source/bindings/scripts/idl_compiler.py b/Source/bindings/scripts/idl_compiler.py
index c74aae7a002777349c65c6c18c68f1ae8c266ba8..5ed382cb9648522cd5547b4e8ad278502540f684 100755
--- a/Source/bindings/scripts/idl_compiler.py
+++ b/Source/bindings/scripts/idl_compiler.py
@@ -38,7 +38,7 @@ import os
 import cPickle as pickle
 import sys
 
-from code_generator_v8 import CodeGeneratorV8
+from code_generator_v8 import CodeGeneratorV8, MODE_BINDINGS, MODE_DICTIONARY_IMPL
 from idl_reader import IdlReader
 from utilities import write_file
 
@@ -47,6 +47,8 @@ def parse_options():
     parser = OptionParser()
     parser.add_option('--cache-directory',
                       help='cache directory, defaults to output directory')
+    parser.add_option('--generate-dictionary-impl',
+                      action="store_true", default=False)
     parser.add_option('--output-directory')
     parser.add_option('--interfaces-info-file')
     parser.add_option('--write-file-only-if-changed', type='int')
@@ -81,7 +83,8 @@ class IdlCompiler(object):
 
     def __init__(self, output_directory, cache_directory='',
                  code_generator=None, interfaces_info=None,
-                 interfaces_info_filename='', only_if_changed=False):
+                 interfaces_info_filename='', only_if_changed=False,
+                 generate_dictionary_impl=False):
         """
         Args:
             interfaces_info:
@@ -92,6 +95,10 @@ class IdlCompiler(object):
         cache_directory = cache_directory or output_directory
         self.cache_directory = cache_directory
         self.code_generator = code_generator
+        if generate_dictionary_impl:
+            self.generating_mode = MODE_DICTIONARY_IMPL
+        else:
+            self.generating_mode = MODE_BINDINGS
         if interfaces_info_filename:
             with open(interfaces_info_filename) as interfaces_info_file:
                 interfaces_info = pickle.load(interfaces_info_file)
@@ -104,7 +111,7 @@ class IdlCompiler(object):
         interface_name = idl_filename_to_interface_name(idl_filename)
         definitions = self.reader.read_idl_definitions(idl_filename)
         output_code_list = self.code_generator.generate_code(
-            definitions, interface_name)
+            definitions, interface_name, mode=self.generating_mode)
         for output_path, output_code in output_code_list:
             write_file(output_code, output_path, self.only_if_changed)
 
@@ -130,7 +137,8 @@ def main():
         options.output_directory,
         cache_directory=options.cache_directory,
         interfaces_info_filename=options.interfaces_info_file,
-        only_if_changed=options.write_file_only_if_changed)
+        only_if_changed=options.write_file_only_if_changed,
+        generate_dictionary_impl=options.generate_dictionary_impl)
     idl_compiler.compile_file(idl_filename)