25     def __init__(self, platforms_config_file, source_root_dir, root_build_dir,  argument
27         self._platforms_config_file = platforms_config_file
28         self._source_root_dir = source_root_dir
29         self._root_build_dir = root_build_dir
30         self._platforms_info = {}
31         self._all_parts = {}
32         self._all_stubs = {}
33         self._is_load = False
34         self._target_arch = target_arch
35         self._scalable_build = scalable_build
37     def _read_platforms_config(self):  argument
38         if not os.path.exists(self._platforms_config_file):
40                 self._platforms_config_file))
41         config_info = read_json_file(self._platforms_config_file)
44                 self._platforms_config_file))
101     def _loading(self):  argument
102         if self._is_load:
104         all_platforms_config = self._read_platforms_config()
105         _platforms_info = all_platforms_config.get(self._target_arch)
106         config_base_dir = os.path.dirname(self._platforms_config_file)
110             if self._scalable_build is False:
131             parts, stubs = self._load_platform_config(_platform_config_file)
135         self._platforms_info = _platforms_info
136         self._all_parts = all_parts
137         self._all_stubs = all_stubs
138         self._is_load = True
140     def get_all_parts(self):  argument
141         self._loading()
143         for _platform, _parts in self._all_parts.items():
151     def get_all_stubs(self):  argument
152         self._loading()
154         for _platform, _parts in self._all_stubs.items():
162     def platforms_toolchain(self):  argument
163         self._loading()
166         for key, val in self._platforms_info.items():