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gh-125331: Allow the parser to activate future imports on the fly (#125482)

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Pablo Galindo Salgado 2025-02-14 04:54:56 +00:00 • committed by GitHub
parent 05e89c34bd
commit 3bd3e09588
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6 changed files with 50 additions and 2 deletions
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15
Parser/action_helpers.c
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@ -1694,3 +1694,18 @@ _PyPegen_concatenate_strings(Parser *p, asdl_expr_seq *strings,
assert(current_pos == n_elements);
return _PyAST_JoinedStr(values, lineno, col_offset, end_lineno, end_col_offset, p->arena);
}
stmt_ty
_PyPegen_checked_future_import(Parser *p, identifier module, asdl_alias_seq * names, int level,
int lineno, int col_offset, int end_lineno, int end_col_offset,
PyArena *arena) {
if (level == 0 && PyUnicode_CompareWithASCIIString(module, "__future__") == 0) {
for (Py_ssize_t i = 0; i < asdl_seq_LEN(names); i++) {
alias_ty alias = asdl_seq_GET(names, i);
if (PyUnicode_CompareWithASCIIString(alias->name, "barry_as_FLUFL") == 0) {
p->flags |= PyPARSE_BARRY_AS_BDFL;
}
}
}
return _PyAST_ImportFrom(module, names, level, lineno, col_offset, end_lineno, end_col_offset, arena);
}