diff options
| author |   Lysandros Nikolaou <lisandrosnik@gmail.com> | 2021-01-03 01:14:21 +0200 |
|---|---|---|
| committer |   GitHub <noreply@github.com> | 2021-01-03 01:14:21 +0200 |
| commit | 2ea320dddd553298038bb7d6789e50e199332f66 (patch) | |
| tree | e0388038b94c848cc18922f86ff0cb82e4c44465 /Grammar | |
| parent | No need to test "istep==1" twice. (GH-24064) (diff) | |
| download | cpython-2ea320dddd553298038bb7d6789e50e199332f66.tar.gz cpython-2ea320dddd553298038bb7d6789e50e199332f66.tar.bz2 cpython-2ea320dddd553298038bb7d6789e50e199332f66.zip | |
bpo-40631: Disallow single parenthesized star target (GH-24027)
Diffstat (limited to 'Grammar')
| -rw-r--r-- | Grammar/python.gram | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/Grammar/python.gram b/Grammar/python.gram index 4915cc43e84..8517bf2f9ba 100644 --- a/Grammar/python.gram +++ b/Grammar/python.gram @@ -580,18 +580,23 @@ star_targets[expr_ty]: | a=star_target !',' { a } | a=star_target b=(',' c=star_target { c })* [','] { _Py_Tuple(CHECK(asdl_expr_seq*, _PyPegen_seq_insert_in_front(p, a, b)), Store, EXTRA) } -star_targets_seq[asdl_expr_seq*]: a[asdl_expr_seq*]=','.star_target+ [','] { a } +star_targets_list_seq[asdl_expr_seq*]: a[asdl_expr_seq*]=','.star_target+ [','] { a } +star_targets_tuple_seq[asdl_expr_seq*]: + | a=star_target b=(',' c=star_target { c })+ [','] { (asdl_expr_seq*) _PyPegen_seq_insert_in_front(p, a, b) } + | a=star_target ',' { (asdl_expr_seq*) _PyPegen_singleton_seq(p, a) } star_target[expr_ty] (memo): | '*' a=(!'*' star_target) { _Py_Starred(CHECK(expr_ty, _PyPegen_set_expr_context(p, a, Store)), Store, EXTRA) } + | target_with_star_atom +target_with_star_atom[expr_ty] (memo): | a=t_primary '.' b=NAME !t_lookahead { _Py_Attribute(a, b->v.Name.id, Store, EXTRA) } | a=t_primary '[' b=slices ']' !t_lookahead { _Py_Subscript(a, b, Store, EXTRA) } | star_atom star_atom[expr_ty]: | a=NAME { _PyPegen_set_expr_context(p, a, Store) } - | '(' a=star_target ')' { _PyPegen_set_expr_context(p, a, Store) } - | '(' a=[star_targets_seq] ')' { _Py_Tuple(a, Store, EXTRA) } - | '[' a=[star_targets_seq] ']' { _Py_List(a, Store, EXTRA) } + | '(' a=target_with_star_atom ')' { _PyPegen_set_expr_context(p, a, Store) } + | '(' a=[star_targets_tuple_seq] ')' { _Py_Tuple(a, Store, EXTRA) } + | '[' a=[star_targets_list_seq] ']' { _Py_List(a, Store, EXTRA) } single_target[expr_ty]: | single_subscript_attribute_target |