diff options
Diffstat (limited to 'src/lib/smartlist_core/smartlist_foreach.h')
| -rw-r--r-- | src/lib/smartlist_core/smartlist_foreach.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/src/lib/smartlist_core/smartlist_foreach.h b/src/lib/smartlist_core/smartlist_foreach.h index 0f6fe30074..03edb80f05 100644 --- a/src/lib/smartlist_core/smartlist_foreach.h +++ b/src/lib/smartlist_core/smartlist_foreach.h @@ -1,6 +1,6 @@ /* Copyright (c) 2003-2004, Roger Dingledine * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson. - * Copyright (c) 2007-2019, The Tor Project, Inc. */ + * Copyright (c) 2007-2020, The Tor Project, Inc. */ /* See LICENSE for licensing information */ /** @@ -83,6 +83,19 @@ ++var ## _sl_idx) { \ var = (sl)->list[var ## _sl_idx]; +/** Iterates over the items in smartlist <b>sl</b> in reverse order, similar to + * SMARTLIST_FOREACH_BEGIN + * + * NOTE: This macro is incompatible with SMARTLIST_DEL_CURRENT. + */ +#define SMARTLIST_FOREACH_REVERSE_BEGIN(sl, type, var) \ + STMT_BEGIN \ + int var ## _sl_idx, var ## _sl_len=(sl)->num_used; \ + type var; \ + for (var ## _sl_idx = var ## _sl_len-1; var ## _sl_idx >= 0; \ + --var ## _sl_idx) { \ + var = (sl)->list[var ## _sl_idx]; + #define SMARTLIST_FOREACH_END(var) \ var = NULL; \ (void) var ## _sl_idx; \ |