Some progress in trying to make the deque work

jedi/api/helpers.py

@@ -9,11 +9,13 @@ from parso.python.parser import Parser
 from parso.python import tree
 
 from jedi._compatibility import u
-from jedi.evaluate.base_context import NO_CONTEXTS
+from jedi.evaluate.base_context import NO_CONTEXTS, ContextSet
 from jedi.evaluate.syntax_tree import eval_atom
 from jedi.evaluate.helpers import evaluate_call_of_leaf
 from jedi.evaluate.compiled import get_string_context_set
 from jedi.cache import call_signature_time_cache
+from jedi.evaluate.gradual.conversion import convert_names
+from jedi.evaluate.names import TreeNameDefinition
 
 
 CompletionParts = namedtuple('CompletionParts', ['path', 'has_dot', 'name'])
@@ -141,15 +143,23 @@ def evaluate_goto_definition(evaluator, context, leaf):
     if leaf.type == 'name':
         # In case of a name we can just use goto_definition which does all the
         # magic itself.
-        return evaluator.goto_definitions(context, leaf)
+        name = TreeNameDefinition(context, leaf)
+        if leaf.parent.type in ('trailer', 'error_node'):
+            return evaluator.goto_definitions(context, leaf)
+        return ContextSet.from_sets(
+            name.infer() for name in convert_names([name], prefer_stubs=True)
+        )
 
     parent = leaf.parent
     definitions = NO_CONTEXTS
     if parent.type == 'atom':
+        # e.g. `(a + b)`
         definitions = context.eval_node(leaf.parent)
     elif parent.type == 'trailer':
+        # e.g. `a()`
         definitions = evaluate_call_of_leaf(context, leaf)
     elif isinstance(leaf, tree.Literal):
+        # e.g. `"foo"` or `1.0`
         return eval_atom(context, leaf)
     elif leaf.type in ('fstring_string', 'fstring_start', 'fstring_end'):
         return get_string_context_set(evaluator)