1  from pathlib import Path
   2  from typing import Optional
   3  
   4  from jedi.inference.cache import inference_state_method_cache
   5  from jedi.inference.filters import DictFilter
   6  from jedi.inference.names import ValueNameMixin, AbstractNameDefinition
   7  from jedi.inference.base_value import Value
   8  from jedi.inference.value.module import SubModuleDictMixin
   9  from jedi.inference.context import NamespaceContext
  10  
  11  
  12  class ImplicitNSName(ValueNameMixin, AbstractNameDefinition):
  13      """
  14      Accessing names for implicit namespace packages should infer to nothing.
  15      This object will prevent Jedi from raising exceptions
  16      """
  17      def __init__(self, implicit_ns_value, string_name):
  18          self._value = implicit_ns_value
  19          self.string_name = string_name
  20  
  21  
  22  class ImplicitNamespaceValue(Value, SubModuleDictMixin):
  23      """
  24      Provides support for implicit namespace packages
  25      """
  26      api_type = 'namespace'
  27      parent_context = None
  28  
  29      def __init__(self, inference_state, string_names, paths):
  30          super().__init__(inference_state, parent_context=None)
  31          self.inference_state = inference_state
  32          self.string_names = string_names
  33          self._paths = paths
  34  
  35      def get_filters(self, origin_scope=None):
  36          yield DictFilter(self.sub_modules_dict())
  37  
  38      def get_qualified_names(self):
  39          return ()
  40  
  41      @property  # type: ignore[misc]
  42      @inference_state_method_cache()
  43      def name(self):
  44          string_name = self.py__package__()[-1]
  45          return ImplicitNSName(self, string_name)
  46  
  47      def py__file__(self) -> Optional[Path]:
  48          return None
  49  
  50      def py__package__(self):
  51          """Return the fullname
  52          """
  53          return self.string_names
  54  
  55      def py__path__(self):
  56          return self._paths
  57  
  58      def py__name__(self):
  59          return '.'.join(self.string_names)
  60  
  61      def is_namespace(self):
  62          return True
  63  
  64      def is_stub(self):
  65          return False
  66  
  67      def is_package(self):
  68          return True
  69  
  70      def as_context(self):
  71          return NamespaceContext(self)
  72  
  73      def __repr__(self):
  74          return '<%s: %s>' % (self.__class__.__name__, self.py__name__())
  75