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First implementation of doing precise if statement filtering.

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This commit is contained in:
Dave Halter
2015-06-22 22:16:38 +02:00
parent 6da4f1fffb
commit 64fcbbba79
5 changed files with 114 additions and 3 deletions
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5
jedi/evaluate/flow_analysis.py
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@@ -41,10 +41,12 @@ def break_check(evaluator, base_scope, stmt, origin_scope=None):
# e.g. `if 0:` would cause all name lookup within the flow make
# unaccessible. This is not a "problem" in Python, because the code is
# never called. In Jedi though, we still want to infer types.
"""
while origin_scope is not None:
if element_scope == origin_scope:
return REACHABLE
origin_scope = origin_scope.parent
"""
return _break_check(evaluator, stmt, base_scope, element_scope)
@@ -62,7 +64,8 @@ def _break_check(evaluator, stmt, base_scope, element_scope):
reachable = reachable.invert()
else:
node = element_scope.node_in_which_check_node(stmt)
reachable = _check_if(evaluator, node)
if node is not None:
reachable = _check_if(evaluator, node)
elif isinstance(element_scope, (tree.TryStmt, tree.WhileStmt)):
return UNSURE