parse-options: add OPT_BITOP()
This is needed for diff_opt_parse() where we do
value = (value & ~mask) | some_more;
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/parse-options.c b/parse-options.c
index 779034e..62d94ca 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -109,6 +109,13 @@ static int get_value(struct parse_opt_ctx_t *p,
*(int *)opt->value &= ~opt->defval;
return 0;
+ case OPTION_BITOP:
+ if (unset)
+ BUG("BITOP can't have unset form");
+ *(int *)opt->value &= ~opt->extra;
+ *(int *)opt->value |= opt->defval;
+ return 0;
+
case OPTION_COUNTUP:
if (*(int *)opt->value < 0)
*(int *)opt->value = 0;
diff --git a/parse-options.h b/parse-options.h
index d663b83..c97324f 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -10,6 +10,7 @@ enum parse_opt_type {
/* options with no arguments */
OPTION_BIT,
OPTION_NEGBIT,
+ OPTION_BITOP,
OPTION_COUNTUP,
OPTION_SET_INT,
OPTION_CMDMODE,
@@ -118,6 +119,7 @@ struct option {
int flags;
parse_opt_cb *callback;
intptr_t defval;
+ intptr_t extra;
};
#define OPT_BIT_F(s, l, v, h, b, f) { OPTION_BIT, (s), (l), (v), NULL, (h), \
@@ -133,6 +135,9 @@ struct option {
(h), PARSE_OPT_NOARG}
#define OPT_GROUP(h) { OPTION_GROUP, 0, NULL, NULL, NULL, (h) }
#define OPT_BIT(s, l, v, h, b) OPT_BIT_F(s, l, v, h, b, 0)
+#define OPT_BITOP(s, l, v, h, set, clear) { OPTION_BITOP, (s), (l), (v), NULL, (h), \
+ PARSE_OPT_NOARG|PARSE_OPT_NONEG, NULL, \
+ (set), (clear) }
#define OPT_NEGBIT(s, l, v, h, b) { OPTION_NEGBIT, (s), (l), (v), NULL, \
(h), PARSE_OPT_NOARG, NULL, (b) }
#define OPT_COUNTUP(s, l, v, h) OPT_COUNTUP_F(s, l, v, h, 0)
