Add an implementation path option to json_schema_compiler

tools/json_schema_compiler/compiler.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 """Generator for C++ structs from api json files.
 
 The purpose of this tool is to remove the need for hand-written code that
 converts to and from base::Value types when receiving javascript api calls.
 Originally written for generating code for extension apis. Reference schemas
 are in chrome/common/extensions/api.
@@ skipping 20 matching lines @@
 
 # Names of supported code generators, as specified on the command-line.
 # First is default.
 GENERATORS = ['cpp', 'cpp-bundle', 'dart', 'ppapi']
 
 def GenerateSchema(generator,
                    filenames,
                    root,
                    destdir,
                    root_namespace,
-                   dart_overrides_dir):
+                   dart_overrides_dir,
+                   impl_dir):
   schema_loader = SchemaLoader(
       os.path.dirname(os.path.relpath(os.path.normpath(filenames[0]), root)),
       os.path.dirname(filenames[0]))
   # Merge the source files into a single list of schemas.
   api_defs = []
   for filename in filenames:
     schema = os.path.normpath(filename)
     api_def = schema_loader.LoadSchema(os.path.split(schema)[1])
 
     # If compiling the C++ model code, delete 'nocompile' nodes.
@@ skipping 23 matching lines @@
   type_generator = CppTypeGenerator(api_model,
                                     schema_loader,
                                     default_namespace=default_namespace)
 
   if generator == 'cpp-bundle':
     cpp_bundle_generator = CppBundleGenerator(root,
                                               api_model,
                                               api_defs,
                                               type_generator,
                                               root_namespace,
-                                              namespace.source_file_dir)
+                                              namespace.source_file_dir,
+                                              impl_dir)
     generators = [
       ('generated_api.cc', cpp_bundle_generator.api_cc_generator),
       ('generated_api.h', cpp_bundle_generator.api_h_generator),
       ('generated_schemas.cc', cpp_bundle_generator.schemas_cc_generator),
       ('generated_schemas.h', cpp_bundle_generator.schemas_h_generator)
     ]
   elif generator == 'cpp':
     cpp_generator = CppGenerator(type_generator, root_namespace)
     generators = [
       ('%s.h' % short_filename, cpp_generator.h_generator),
@@ skipping 35 matching lines @@
   parser.add_option('-d', '--destdir',
       help='root directory to output generated files.')
   parser.add_option('-n', '--namespace', default='generated_api_schemas',
       help='C++ namespace for generated files. e.g extensions::api.')
   parser.add_option('-g', '--generator', default=GENERATORS[0],
       choices=GENERATORS,
       help='The generator to use to build the output code. Supported values are'
       ' %s' % GENERATORS)
   parser.add_option('-D', '--dart-overrides-dir', dest='dart_overrides_dir',
       help='Adds custom dart from files in the given directory (Dart only).')
+  parser.add_option('-i', '--impl-dir', dest='impl_dir',
+      help='The root path of all API implementations')
 
   (opts, filenames) = parser.parse_args()
 
   if not filenames:
     sys.exit(0) # This is OK as a no-op
 
   # Unless in bundle mode, only one file should be specified.
   if opts.generator != 'cpp-bundle' and len(filenames) > 1:
     # TODO(sashab): Could also just use filenames[0] here and not complain.
     raise Exception(
         "Unless in bundle mode, only one file can be specified at a time.")
 
   result = GenerateSchema(opts.generator, filenames, opts.root, opts.destdir,
-                          opts.namespace, opts.dart_overrides_dir)
+                          opts.namespace, opts.dart_overrides_dir,
+                          opts.impl_dir)
   if not opts.destdir:
     print result