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Add issue 'too many expressions in star-unpacking assignment'

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Dave Halter
2017-07-30 15:13:21 +02:00
parent cc24ba61ef
commit 94ce899a86
3 changed files with 20 additions and 14 deletions
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22
parso/python/normalizer.py
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@@ -286,19 +286,27 @@ class ErrorFinder(Normalizer):
if node.parent.type == 'del_stmt':
self._add_syntax_error("can't use starred expression here", node.parent)
else:
starred = [c for c in node.children if c.type == 'star_expr']
if len(starred) > 1:
message = "two starred expressions in assignment"
self._add_syntax_error(message, starred[1])
"can't use starred expression here"
is_definition = True
if is_definition:
args = [c for c in node.children if c != ',']
starred = [c for c in args if c.type == 'star_expr']
if len(starred) > 1:
message = "two starred expressions in assignment"
self._add_syntax_error(message, starred[1])
elif starred:
count = args.index(starred[0])
if count >= 256:
message = "too many expressions in star-unpacking assignment"
self._add_syntax_error(message, starred[0])
elif node.type == 'star_expr':
if node.parent.type not in _STAR_EXPR_PARENTS:
message = "starred assignment target must be in a list or tuple"
self._add_syntax_error(message, node)
if node.parent.type == 'testlist_comp':
# [*[] for a in [1]]
message = "iterable unpacking cannot be used in comprehension"
self._add_syntax_error(message, node)
if node.parent.children[0] == node:
message = "iterable unpacking cannot be used in comprehension"
self._add_syntax_error(message, node)
elif node.type == 'comp_for':
# Some of the nodes here are already used, so no else if
expr_list = node.children[1 + int(node.children[0] == 'async')]