153 lines
4.7 KiB
Python
153 lines
4.7 KiB
Python
from inspect import Parameter
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from jedi.cache import memoize_method
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from jedi import debug
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from jedi import parser_utils
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class _SignatureMixin:
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def to_string(self):
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def param_strings():
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is_positional = False
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is_kw_only = False
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for n in self.get_param_names(resolve_stars=True):
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kind = n.get_kind()
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is_positional |= kind == Parameter.POSITIONAL_ONLY
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if is_positional and kind != Parameter.POSITIONAL_ONLY:
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yield '/'
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is_positional = False
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if kind == Parameter.VAR_POSITIONAL:
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is_kw_only = True
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elif kind == Parameter.KEYWORD_ONLY and not is_kw_only:
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yield '*'
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is_kw_only = True
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yield n.to_string()
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if is_positional:
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yield '/'
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s = self.name.string_name + '(' + ', '.join(param_strings()) + ')'
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annotation = self.annotation_string
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if annotation:
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s += ' -> ' + annotation
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return s
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class AbstractSignature(_SignatureMixin):
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def __init__(self, value, is_bound=False):
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self.value = value
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self.is_bound = is_bound
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@property
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def name(self):
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return self.value.name
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@property
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def annotation_string(self):
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return ''
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def get_param_names(self, resolve_stars=False):
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param_names = self._function_value.get_param_names()
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if self.is_bound:
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return param_names[1:]
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return param_names
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def bind(self, value):
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raise NotImplementedError
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def matches_signature(self, arguments):
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return True
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def __repr__(self):
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if self.value is self._function_value:
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return '<%s: %s>' % (self.__class__.__name__, self.value)
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return '<%s: %s, %s>' % (self.__class__.__name__, self.value, self._function_value)
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class TreeSignature(AbstractSignature):
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def __init__(self, value, function_value=None, is_bound=False):
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super().__init__(value, is_bound)
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self._function_value = function_value or value
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def bind(self, value):
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return TreeSignature(value, self._function_value, is_bound=True)
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@property
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def _annotation(self):
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# Classes don't need annotations, even if __init__ has one. They always
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# return themselves.
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if self.value.is_class():
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return None
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return self._function_value.tree_node.annotation
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@property
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def annotation_string(self):
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a = self._annotation
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if a is None:
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return ''
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return a.get_code(include_prefix=False)
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@memoize_method
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def get_param_names(self, resolve_stars=False):
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params = self._function_value.get_param_names()
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if resolve_stars:
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from jedi.inference.star_args import process_params
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params = process_params(params)
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if self.is_bound:
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return params[1:]
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return params
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def matches_signature(self, arguments):
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from jedi.inference.param import get_executed_param_names_and_issues
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executed_param_names, issues = \
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get_executed_param_names_and_issues(self._function_value, arguments)
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if issues:
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return False
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matches = all(executed_param_name.matches_signature()
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for executed_param_name in executed_param_names)
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if debug.enable_notice:
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tree_node = self._function_value.tree_node
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signature = parser_utils.get_signature(tree_node)
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if matches:
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debug.dbg("Overloading match: %s@%s (%s)",
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signature, tree_node.start_pos[0], arguments, color='BLUE')
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else:
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debug.dbg("Overloading no match: %s@%s (%s)",
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signature, tree_node.start_pos[0], arguments, color='BLUE')
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return matches
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class BuiltinSignature(AbstractSignature):
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def __init__(self, value, return_string, function_value=None, is_bound=False):
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super().__init__(value, is_bound)
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self._return_string = return_string
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self.__function_value = function_value
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@property
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def annotation_string(self):
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return self._return_string
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@property
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def _function_value(self):
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if self.__function_value is None:
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return self.value
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return self.__function_value
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def bind(self, value):
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return BuiltinSignature(
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value, self._return_string,
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function_value=self.value,
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is_bound=True
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)
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class SignatureWrapper(_SignatureMixin):
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def __init__(self, wrapped_signature):
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self._wrapped_signature = wrapped_signature
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def __getattr__(self, name):
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return getattr(self._wrapped_signature, name)
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