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Fix bug 1441408 where a double colon didn't trigger extended slice semantics (applies patch 1452332)

This commit is contained in:
Nick Coghlan 2006-03-17 17:59:10 +00:00
parent db815abc70
commit 77858684e4
1 changed files with 12 additions and 8 deletions
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12
Python/ast.c
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@ -1317,11 +1317,14 @@ ast_for_slice(struct compiling *c, const node *n)
ch = CHILD(n, NCH(n) - 1); ch = CHILD(n, NCH(n) - 1);
if (TYPE(ch) == sliceop) { if (TYPE(ch) == sliceop) {
if (NCH(ch) == 1) if (NCH(ch) == 1) {
/* XXX: If only 1 child, then should just be a colon. Should we /* No expression, so step is None */
just skip assigning and just get to the return? */
ch = CHILD(ch, 0); ch = CHILD(ch, 0);
else step = Name(new_identifier("None", c->c_arena), Load,
LINENO(ch), ch->n_col_offset, c->c_arena);
if (!step)
return NULL;
} else {
ch = CHILD(ch, 1); ch = CHILD(ch, 1);
if (TYPE(ch) == test) { if (TYPE(ch) == test) {
step = ast_for_expr(c, ch); step = ast_for_expr(c, ch);
@ -1329,6 +1332,7 @@ ast_for_slice(struct compiling *c, const node *n)
return NULL; return NULL;
} }
} }
}
return Slice(lower, upper, step, c->c_arena); return Slice(lower, upper, step, c->c_arena);
} }