def create_default_param(parent_context, param): if param.stars == 1: result_arg = context.LazyKnownContext( iterable.FakeSequence(parent_context.evaluator, 'tuple', [])) elif param.stars == 2: result_arg = context.LazyKnownContext( iterable.FakeDict(parent_context.evaluator, {})) elif param.default is None: result_arg = context.LazyUnknownContext() else: result_arg = context.LazyTreeContext(parent_context, param.default) return ExecutedParam(parent_context, param, None, result_arg)
def py__bases__(self): arglist = self.tree_node.get_super_arglist() if arglist: args = param.TreeArguments(self.evaluator, self, arglist) return [value for key, value in args.unpack() if key is None] else: return [context.LazyKnownContext(compiled.create(self.evaluator, object))]
def _imitate_items(self): lazy_contexts = [ context.LazyKnownContext(FakeSequence( self.evaluator, 'tuple', (context.LazyTreeContext(self._defining_context, key_node), context.LazyTreeContext(self._defining_context, value_node)) )) for key_node, value_node in self._items() ] return set([FakeSequence(self.evaluator, 'list', lazy_contexts)])
def _eval_yield(self, yield_expr): if yield_expr.type == 'keyword': # `yield` just yields None. yield context.LazyKnownContext( compiled.create(self.evaluator, None)) return node = yield_expr.children[1] if node.type == 'yield_arg': # It must be a yield from. cn = ContextualizedNode(self, node.children[1]) for lazy_context in iterable.py__iter__(self.evaluator, cn.infer(), cn): yield lazy_context else: yield context.LazyTreeContext(self, node)
def unpack(self, func=None): named_args = [] for stars, el in self._split(): if stars == 1: arrays = self.context.eval_node(el) iterators = [ _iterate_star_args(self.context, a, el, func) for a in arrays ] iterators = list(iterators) for values in list(zip_longest(*iterators)): # TODO zip_longest yields None, that means this would raise # an exception? yield None, context.get_merged_lazy_context( [v for v in values if v is not None]) elif stars == 2: arrays = self._evaluator.eval_element(self.context, el) for dct in arrays: for key, values in _star_star_dict(self.context, dct, el, func): yield key, values else: if el.type == 'argument': c = el.children if len(c) == 3: # Keyword argument. named_args.append(( c[0].value, context.LazyTreeContext(self.context, c[2]), )) else: # Generator comprehension. # Include the brackets with the parent. comp = iterable.GeneratorComprehension( self._evaluator, self.context, self.argument_node.parent) yield None, context.LazyKnownContext(comp) else: yield None, context.LazyTreeContext(self.context, el) # Reordering var_args is necessary, because star args sometimes appear # after named argument, but in the actual order it's prepended. for named_arg in named_args: yield named_arg
def get_params(execution_context, var_args): result_params = [] param_dict = {} funcdef = execution_context.tree_node parent_context = execution_context.parent_context for param in funcdef.params: param_dict[param.name.value] = param unpacked_va = list(var_args.unpack(funcdef)) var_arg_iterator = common.PushBackIterator(iter(unpacked_va)) non_matching_keys = defaultdict(lambda: []) keys_used = {} keys_only = False had_multiple_value_error = False for param in funcdef.params: # The value and key can both be null. There, the defaults apply. # args / kwargs will just be empty arrays / dicts, respectively. # Wrong value count is just ignored. If you try to test cases that are # not allowed in Python, Jedi will maybe not show any completions. key, argument = next(var_arg_iterator, (None, None)) while key is not None: keys_only = True try: key_param = param_dict[key] except KeyError: non_matching_keys[key] = argument else: if key in keys_used: had_multiple_value_error = True m = ("TypeError: %s() got multiple values for keyword argument '%s'." % (funcdef.name, key)) for node in var_args.get_calling_nodes(): analysis.add(parent_context, 'type-error-multiple-values', node, message=m) else: keys_used[key] = ExecutedParam(execution_context, key_param, argument) key, argument = next(var_arg_iterator, (None, None)) try: result_params.append(keys_used[param.name.value]) continue except KeyError: pass if param.star_count == 1: # *args param lazy_context_list = [] if argument is not None: lazy_context_list.append(argument) for key, argument in var_arg_iterator: # Iterate until a key argument is found. if key: var_arg_iterator.push_back((key, argument)) break lazy_context_list.append(argument) seq = iterable.FakeSequence(execution_context.evaluator, 'tuple', lazy_context_list) result_arg = context.LazyKnownContext(seq) elif param.star_count == 2: # **kwargs param dct = iterable.FakeDict(execution_context.evaluator, dict(non_matching_keys)) result_arg = context.LazyKnownContext(dct) non_matching_keys = {} else: # normal param if argument is None: # No value: Return an empty container if param.default is None: result_arg = context.LazyUnknownContext() if not keys_only: for node in var_args.get_calling_nodes(): m = _error_argument_count(funcdef, len(unpacked_va)) analysis.add(parent_context, 'type-error-too-few-arguments', node, message=m) else: result_arg = context.LazyTreeContext(parent_context, param.default) else: result_arg = argument result_params.append(ExecutedParam(execution_context, param, result_arg)) if not isinstance(result_arg, context.LazyUnknownContext): keys_used[param.name.value] = result_params[-1] if keys_only: # All arguments should be handed over to the next function. It's not # about the values inside, it's about the names. Jedi needs to now that # there's nothing to find for certain names. for k in set(param_dict) - set(keys_used): param = param_dict[k] if not (non_matching_keys or had_multiple_value_error or param.star_count or param.default): # add a warning only if there's not another one. for node in var_args.get_calling_nodes(): m = _error_argument_count(funcdef, len(unpacked_va)) analysis.add(parent_context, 'type-error-too-few-arguments', node, message=m) for key, lazy_context in non_matching_keys.items(): m = "TypeError: %s() got an unexpected keyword argument '%s'." \ % (funcdef.name, key) add_argument_issue( parent_context, 'type-error-keyword-argument', lazy_context, message=m ) remaining_arguments = list(var_arg_iterator) if remaining_arguments: m = _error_argument_count(funcdef, len(unpacked_va)) # Just report an error for the first param that is not needed (like # cPython). first_key, lazy_context = remaining_arguments[0] if var_args.get_calling_nodes(): # There might not be a valid calling node so check for that first. add_argument_issue(parent_context, 'type-error-too-many-arguments', lazy_context, message=m) return result_params
def py__iter__(self): for key in self._dct: yield context.LazyKnownContext(compiled.create(self.evaluator, key))