forked from VimPlug/jedi
334 lines
10 KiB
Python
334 lines
10 KiB
Python
from parso.python.tree import ExprStmt, CompFor
|
|
|
|
from jedi import debug
|
|
from jedi._compatibility import Python3Method, zip_longest, unicode
|
|
from jedi.parser_utils import clean_scope_docstring, get_doc_with_call_signature
|
|
from jedi.common import BaseContextSet
|
|
|
|
|
|
class Context(object):
|
|
"""
|
|
Should be defined, otherwise the API returns empty types.
|
|
"""
|
|
|
|
"""
|
|
To be defined by subclasses.
|
|
"""
|
|
predefined_names = {}
|
|
tree_node = None
|
|
|
|
def __init__(self, evaluator, parent_context=None):
|
|
self.evaluator = evaluator
|
|
self.parent_context = parent_context
|
|
|
|
@property
|
|
def api_type(self):
|
|
# By default just lower name of the class. Can and should be
|
|
# overwritten.
|
|
return self.__class__.__name__.lower()
|
|
|
|
def get_root_context(self):
|
|
context = self
|
|
while True:
|
|
if context.parent_context is None:
|
|
return context
|
|
context = context.parent_context
|
|
|
|
@debug.increase_indent
|
|
def execute(self, arguments):
|
|
"""
|
|
In contrast to py__call__ this function is always available.
|
|
|
|
`hasattr(x, py__call__)` can also be checked to see if a context is
|
|
executable.
|
|
"""
|
|
if self.evaluator.is_analysis:
|
|
arguments.eval_all()
|
|
|
|
debug.dbg('execute: %s %s', self, arguments)
|
|
from jedi.evaluate import stdlib
|
|
try:
|
|
# Some stdlib functions like super(), namedtuple(), etc. have been
|
|
# hard-coded in Jedi to support them.
|
|
return stdlib.execute(self.evaluator, self, arguments)
|
|
except stdlib.NotInStdLib:
|
|
pass
|
|
|
|
try:
|
|
func = self.py__call__
|
|
except AttributeError:
|
|
debug.warning("no execution possible %s", self)
|
|
return NO_CONTEXTS
|
|
else:
|
|
context_set = func(arguments)
|
|
debug.dbg('execute result: %s in %s', context_set, self)
|
|
return context_set
|
|
|
|
return self.evaluator.execute(self, arguments)
|
|
|
|
def execute_evaluated(self, *value_list):
|
|
"""
|
|
Execute a function with already executed arguments.
|
|
"""
|
|
from jedi.evaluate.param import ValuesArguments
|
|
arguments = ValuesArguments([ContextSet(value) for value in value_list])
|
|
return self.execute(arguments)
|
|
|
|
def iterate(self, contextualized_node=None):
|
|
debug.dbg('iterate')
|
|
try:
|
|
iter_method = self.py__iter__
|
|
except AttributeError:
|
|
if contextualized_node is not None:
|
|
from jedi.evaluate import analysis
|
|
analysis.add(
|
|
contextualized_node.context,
|
|
'type-error-not-iterable',
|
|
contextualized_node.node,
|
|
message="TypeError: '%s' object is not iterable" % self)
|
|
return iter([])
|
|
else:
|
|
return iter_method()
|
|
|
|
def get_item(self, index_contexts, contextualized_node):
|
|
from jedi.evaluate.compiled import CompiledObject
|
|
from jedi.evaluate.iterable import Slice, AbstractSequence
|
|
result = ContextSet()
|
|
|
|
for index in index_contexts:
|
|
if isinstance(index, (CompiledObject, Slice)):
|
|
index = index.obj
|
|
|
|
if type(index) not in (float, int, str, unicode, slice, type(Ellipsis)):
|
|
# If the index is not clearly defined, we have to get all the
|
|
# possiblities.
|
|
if isinstance(self, AbstractSequence) and self.array_type == 'dict':
|
|
result |= self.dict_values()
|
|
else:
|
|
result |= iterate_contexts(ContextSet(self))
|
|
continue
|
|
|
|
# The actual getitem call.
|
|
try:
|
|
getitem = self.py__getitem__
|
|
except AttributeError:
|
|
from jedi.evaluate import analysis
|
|
# TODO this context is probably not right.
|
|
analysis.add(
|
|
contextualized_node.context,
|
|
'type-error-not-subscriptable',
|
|
contextualized_node.node,
|
|
message="TypeError: '%s' object is not subscriptable" % self
|
|
)
|
|
else:
|
|
try:
|
|
result |= getitem(index)
|
|
except IndexError:
|
|
result |= iterate_contexts(ContextSet(self))
|
|
except KeyError:
|
|
# Must be a dict. Lists don't raise KeyErrors.
|
|
result |= self.dict_values()
|
|
return result
|
|
|
|
def eval_node(self, node):
|
|
return self.evaluator.eval_element(self, node)
|
|
|
|
@Python3Method
|
|
def py__getattribute__(self, name_or_str, name_context=None, position=None,
|
|
search_global=False, is_goto=False,
|
|
analysis_errors=True):
|
|
"""
|
|
This is the search function.
|
|
|
|
:param position: Position of the last statement -> tuple of line, column
|
|
"""
|
|
if name_context is None:
|
|
name_context = self
|
|
from jedi.evaluate import finder
|
|
f = finder.NameFinder(self.evaluator, self, name_context, name_or_str,
|
|
position, analysis_errors=analysis_errors)
|
|
filters = f.get_filters(search_global)
|
|
if is_goto:
|
|
return f.filter_name(filters)
|
|
return f.find(filters, attribute_lookup=not search_global)
|
|
|
|
return self.evaluator.find_types(
|
|
self, name_or_str, name_context, position, search_global, is_goto,
|
|
analysis_errors)
|
|
|
|
def create_context(self, node, node_is_context=False, node_is_object=False):
|
|
return self.evaluator.create_context(self, node, node_is_context, node_is_object)
|
|
|
|
def is_class(self):
|
|
return False
|
|
|
|
def py__bool__(self):
|
|
"""
|
|
Since Wrapper is a super class for classes, functions and modules,
|
|
the return value will always be true.
|
|
"""
|
|
return True
|
|
|
|
def py__doc__(self, include_call_signature=False):
|
|
try:
|
|
self.tree_node.get_doc_node
|
|
except AttributeError:
|
|
return ''
|
|
else:
|
|
if include_call_signature:
|
|
return get_doc_with_call_signature(self.tree_node)
|
|
else:
|
|
return clean_scope_docstring(self.tree_node)
|
|
return None
|
|
|
|
|
|
def iterate_contexts(contexts, contextualized_node=None):
|
|
"""
|
|
Calls `iterate`, on all contexts but ignores the ordering and just returns
|
|
all contexts that the iterate functions yield.
|
|
"""
|
|
return ContextSet.from_sets(
|
|
lazy_context.infer()
|
|
for lazy_context in contexts.iterate(contextualized_node)
|
|
)
|
|
|
|
|
|
class TreeContext(Context):
|
|
def __init__(self, evaluator, parent_context=None):
|
|
super(TreeContext, self).__init__(evaluator, parent_context)
|
|
self.predefined_names = {}
|
|
|
|
def __repr__(self):
|
|
return '<%s: %s>' % (self.__class__.__name__, self.tree_node)
|
|
|
|
|
|
class AbstractLazyContext(object):
|
|
def __init__(self, data):
|
|
self.data = data
|
|
|
|
def __repr__(self):
|
|
return '<%s: %s>' % (self.__class__.__name__, self.data)
|
|
|
|
def infer(self):
|
|
raise NotImplementedError
|
|
|
|
|
|
class LazyKnownContext(AbstractLazyContext):
|
|
"""data is a context."""
|
|
def infer(self):
|
|
return ContextSet(self.data)
|
|
|
|
|
|
class LazyKnownContexts(AbstractLazyContext):
|
|
"""data is a ContextSet."""
|
|
def infer(self):
|
|
return self.data
|
|
|
|
|
|
class LazyUnknownContext(AbstractLazyContext):
|
|
def __init__(self):
|
|
super(LazyUnknownContext, self).__init__(None)
|
|
|
|
def infer(self):
|
|
return NO_CONTEXTS
|
|
|
|
|
|
class LazyTreeContext(AbstractLazyContext):
|
|
def __init__(self, context, node):
|
|
super(LazyTreeContext, self).__init__(node)
|
|
self._context = context
|
|
# We need to save the predefined names. It's an unfortunate side effect
|
|
# that needs to be tracked otherwise results will be wrong.
|
|
self._predefined_names = dict(context.predefined_names)
|
|
|
|
def infer(self):
|
|
old, self._context.predefined_names = \
|
|
self._context.predefined_names, self._predefined_names
|
|
try:
|
|
return self._context.eval_node(self.data)
|
|
finally:
|
|
self._context.predefined_names = old
|
|
|
|
|
|
def get_merged_lazy_context(lazy_contexts):
|
|
if len(lazy_contexts) > 1:
|
|
return MergedLazyContexts(lazy_contexts)
|
|
else:
|
|
return lazy_contexts[0]
|
|
|
|
|
|
class MergedLazyContexts(AbstractLazyContext):
|
|
"""data is a list of lazy contexts."""
|
|
def infer(self):
|
|
return ContextSet.from_sets(l.infer() for l in self.data)
|
|
|
|
|
|
class ContextualizedNode(object):
|
|
def __init__(self, context, node):
|
|
self.context = context
|
|
self.node = node
|
|
|
|
def get_root_context(self):
|
|
return self.context.get_root_context()
|
|
|
|
def infer(self):
|
|
return self.context.eval_node(self.node)
|
|
|
|
|
|
class ContextualizedName(ContextualizedNode):
|
|
# TODO merge with TreeNameDefinition?!
|
|
@property
|
|
def name(self):
|
|
return self.node
|
|
|
|
def assignment_indexes(self):
|
|
"""
|
|
Returns an array of tuple(int, node) of the indexes that are used in
|
|
tuple assignments.
|
|
|
|
For example if the name is ``y`` in the following code::
|
|
|
|
x, (y, z) = 2, ''
|
|
|
|
would result in ``[(1, xyz_node), (0, yz_node)]``.
|
|
"""
|
|
indexes = []
|
|
node = self.node.parent
|
|
compare = self.node
|
|
while node is not None:
|
|
if node.type in ('testlist', 'testlist_comp', 'testlist_star_expr', 'exprlist'):
|
|
for i, child in enumerate(node.children):
|
|
if child == compare:
|
|
indexes.insert(0, (int(i / 2), node))
|
|
break
|
|
else:
|
|
raise LookupError("Couldn't find the assignment.")
|
|
elif isinstance(node, (ExprStmt, CompFor)):
|
|
break
|
|
|
|
compare = node
|
|
node = node.parent
|
|
return indexes
|
|
|
|
|
|
class ContextSet(BaseContextSet):
|
|
def py__class__(self):
|
|
return ContextSet.from_iterable(c.py__class__() for c in self._set)
|
|
|
|
def iterate(self, contextualized_node=None):
|
|
type_iters = [c.iterate(contextualized_node) for c in self._set]
|
|
for lazy_contexts in zip_longest(*type_iters):
|
|
yield get_merged_lazy_context(
|
|
[l for l in lazy_contexts if l is not None]
|
|
)
|
|
|
|
|
|
NO_CONTEXTS = ContextSet()
|
|
|
|
|
|
def iterator_to_context_set(func):
|
|
def wrapper(*args, **kwargs):
|
|
return ContextSet.from_iterable(func(*args, **kwargs))
|
|
|
|
return wrapper
|