Add support for references in different paths in apis

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.
 
 Usage example:
   compiler.py --root /home/Work/src --namespace extensions windows.json
     tabs.json
   compiler.py --destdir gen --root /home/Work/src
     --namespace extensions windows.json tabs.json
 """
 
 import optparse
 import os
+import shlex
 import sys
 
 from cpp_bundle_generator import CppBundleGenerator
 from cpp_generator import CppGenerator
 from cpp_type_generator import CppTypeGenerator
 from dart_generator import DartGenerator
 import json_schema
+from cpp_namespace_environment import CppNamespaceEnvironment
 from model import Model
 from schema_loader import SchemaLoader
 
 # Names of supported code generators, as specified on the command-line.
 # First is default.
 GENERATORS = ['cpp', 'cpp-bundle-registration', 'cpp-bundle-schema', 'dart']
 
 def GenerateSchema(generator_name,
                    file_paths,
                    root,
                    destdir,
                    cpp_namespace_pattern,
                    dart_overrides_dir,
-                   impl_dir):
+                   impl_dir,
+                   include_rules):
   # Merge the source files into a single list of schemas.
   api_defs = []
   for file_path in file_paths:
-    schema = os.path.normpath(file_path)
+    schema = os.path.relpath(file_path, root)
     schema_loader = SchemaLoader(
-        os.path.dirname(os.path.relpath(schema, root)),
-        os.path.dirname(file_path))
-    api_def = schema_loader.LoadSchema(os.path.split(schema)[1])
+        root,
+        os.path.dirname(schema),
+        include_rules,
+        cpp_namespace_pattern)
+    api_def = schema_loader.LoadSchema(schema)
 
     # If compiling the C++ model code, delete 'nocompile' nodes.
     if generator_name == 'cpp':
       api_def = json_schema.DeleteNodes(api_def, 'nocompile')
     api_defs.extend(api_def)
 
   api_model = Model()
 
   # For single-schema compilation make sure that the first (i.e. only) schema
   # is the default one.
   default_namespace = None
 
   # If we have files from multiple source paths, we'll use the common parent
   # path as the source directory.
   src_path = None
 
   # Load the actual namespaces into the model.
   for target_namespace, file_path in zip(api_defs, file_paths):
     relpath = os.path.relpath(os.path.normpath(file_path), root)
     namespace = api_model.AddNamespace(target_namespace,
                                        relpath,
-                                       include_compiler_options=True)
+                                       include_compiler_options=True,
+                                       environment=CppNamespaceEnvironment(
+                                           cpp_namespace_pattern))
 
     if default_namespace is None:
       default_namespace = namespace
 
     if src_path is None:
       src_path = namespace.source_file_dir
     else:
       src_path = os.path.commonprefix((src_path, namespace.source_file_dir))
 
     path, filename = os.path.split(file_path)
@@ skipping 16 matching lines @@
         ('generated_api_registration.cc',
          cpp_bundle_generator.api_cc_generator),
         ('generated_api_registration.h', cpp_bundle_generator.api_h_generator),
       ]
     elif generator_name == 'cpp-bundle-schema':
       generators = [
         ('generated_schemas.cc', cpp_bundle_generator.schemas_cc_generator),
         ('generated_schemas.h', cpp_bundle_generator.schemas_h_generator)
       ]
   elif generator_name == 'cpp':
-    cpp_generator = CppGenerator(type_generator, cpp_namespace_pattern)
+    cpp_generator = CppGenerator(type_generator)
     generators = [
       ('%s.h' % filename_base, cpp_generator.h_generator),
       ('%s.cc' % filename_base, cpp_generator.cc_generator)
     ]
   elif generator_name == 'dart':
     generators = [
       ('%s.dart' % namespace.unix_name, DartGenerator(
           dart_overrides_dir))
     ]
   else:
@@ skipping 30 matching lines @@
   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')
+  parser.add_option('-I', '--include-rules',
+      help='A list of paths to include when searching for referenced objects,'
+      ' with the namespace separated by a \':\'. Example: '
+      '/foo/bar:Foo::Bar::%(namespace)s')
 
   (opts, file_paths) = parser.parse_args()
 
   if not file_paths:
     sys.exit(0) # This is OK as a no-op
 
   # Unless in bundle mode, only one file should be specified.
   if (opts.generator not in ('cpp-bundle-registration', 'cpp-bundle-schema') and
       len(file_paths) > 1):
     # TODO(sashab): Could also just use file_paths[0] here and not complain.
     raise Exception(
         "Unless in bundle mode, only one file can be specified at a time.")
 
+  def split_path_and_namespace(path_and_namespace):
+    if ':' not in path_and_namespace:
+      raise ValueError('Invalid include rule "%s". Rules must be of '
+                       'the form path:namespace' % path_and_namespace)
+    return path_and_namespace.split(':', 1)
+
+  include_rules = []
+  if opts.include_rules:
+    include_rules = map(split_path_and_namespace,
+                        shlex.split(opts.include_rules))
+
   result = GenerateSchema(opts.generator, file_paths, opts.root, opts.destdir,
                           opts.namespace, opts.dart_overrides_dir,
-                          opts.impl_dir)
+                          opts.impl_dir, include_rules)
   if not opts.destdir:
     print result