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bpo-42918: Improve build-in function compile() in mode 'single' (GH-29934)

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Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
This commit is contained in:
Weipeng Hong 2021-12-11 07:44:26 +08:00 • committed by GitHub
parent 98e506ae8a
commit 28179aac79
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3 changed files with 6 additions and 19 deletions
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20
Parser/pegen.c
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@ -675,31 +675,13 @@ _PyPegen_number_token(Parser *p)
t->end_col_offset, p->arena);
}
static int // bool
newline_in_string(Parser *p, const char *cur)
{
for (const char *c = cur; c >= p->tok->buf; c--) {
if (*c == '\'' || *c == '"') {
return 1;
}
}
return 0;
}
/* Check that the source for a single input statement really is a single
statement by looking at what is left in the buffer after parsing.
Trailing whitespace and comments are OK. */
static int // bool
bad_single_statement(Parser *p)
{
const char *cur = strchr(p->tok->buf, '\n');
/* Newlines are allowed if preceded by a line continuation character
or if they appear inside a string. */
if (!cur || (cur != p->tok->buf && *(cur - 1) == '\\')
|| newline_in_string(p, cur)) {
return 0;
}
char *cur = p->tok->cur;
char c = *cur;
for (;;) {