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jedi-fork/jedi/evaluate/pep0484.py
2015-12-13 21:13:20 +01:00

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1.2 KiB
Python

"""
PEP 0484 ( https://www.python.org/dev/peps/pep-0484/ ) describes type hints
through function annotations. There is a strong suggestion in this document
that only the type of type hinting defined in PEP0484 should be allowed
as annotations in future python versions.
The (initial / probably incomplete) implementation todo list for pep-0484:
v Function parameter annotations with builtin/custom type classes
x Function returntype annotations with builtin/custom type classes
x Function parameter annotations with strings (forward reference)
x Function return type annotations with strings (forward reference)
x Local variable type hints
x Assigned types: `Url = str\ndef get(url:Url) -> str:`
x Type hints in `with` statements
x Stub files support
x support `@no_type_check` and `@no_type_check_decorator`
"""
from itertools import chain
from jedi.evaluate.cache import memoize_default
@memoize_default(None, evaluator_is_first_arg=True)
def follow_param(evaluator, param):
annotation = param.annotation()
if annotation:
definitions = evaluator.eval_element(annotation)
return list(chain.from_iterable(
evaluator.execute(d) for d in definitions))
else:
return []