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[3.12] gh-110259: Fix f-strings with multiline expressions and format specs (GH-110271) (#110396)

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gh-110259: Fix f-strings with multiline expressions and format specs (GH-110271)
(cherry picked from commit cc389ef627)

Signed-off-by: Pablo Galindo <pablogsal@gmail.com>
Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
This commit is contained in:
Miss Islington (bot) 2023-10-05 07:07:25 -07:00 • committed by GitHub
parent 7bfcfcf656
commit 09ec8153c6
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5 changed files with 128 additions and 10 deletions
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24
Parser/tokenizer.c
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@ -2768,11 +2768,28 @@ f_string_middle:
if (tok->done == E_ERROR) {
return MAKE_TOKEN(ERRORTOKEN);
}
if (c == EOF || (current_tok->f_string_quote_size == 1 && c == '\n')) {
int in_format_spec = (
current_tok->last_expr_end != -1
&&
INSIDE_FSTRING_EXPR(current_tok)
);
if (c == EOF || (current_tok->f_string_quote_size == 1 && c == '\n')) {
if (tok->decoding_erred) {
return MAKE_TOKEN(ERRORTOKEN);
}
// If we are in a format spec and we found a newline,
// it means that the format spec ends here and we should
// return to the regular mode.
if (in_format_spec && c == '\n') {
tok_backup(tok, c);
TOK_GET_MODE(tok)->kind = TOK_REGULAR_MODE;
p_start = tok->start;
p_end = tok->cur;
return MAKE_TOKEN(FSTRING_MIDDLE);
}
assert(tok->multi_line_start != NULL);
// shift the tok_state's location into
// the start of string, and report the error
@ -2804,11 +2821,6 @@ f_string_middle:
end_quote_size = 0;
}
int in_format_spec = (
current_tok->last_expr_end != -1
&&
INSIDE_FSTRING_EXPR(current_tok)
);
if (c == '{') {
int peek = tok_nextc(tok);
if (peek != '{' || in_format_spec) {