refspec: treat 'fetch' as a Boolean value

Since 6d4c057859 (refspec: introduce struct refspec, 2018-05-16), we have macros called REFSPEC_FETCH and REFSPEC_PUSH. This confusingly suggests that we might introduce other modes in the future, which, while possible, is highly unlikely. But these values are treated as a Boolean, and stored in a struct field called 'fetch'. So the following: if (refspec->fetch == REFSPEC_FETCH) { ... } , and if (refspec->fetch) { ... } are equivalent. Let's avoid renaming the Boolean values "true" and "false" here and remove the two REFSPEC_ macros mentioned above. Since this value is truly a Boolean and will only ever take on a value of 0 or 1, we can declare it as a single bit unsigned field. In practice this won't shrink the size of 'struct refspec', but it more clearly indicates the intent. Note that this introduces some awkwardness like: refspec_item_init_or_die(&spec, refspec, 1); , where it's unclear what the final "1" does. This will be addressed in the following commits. Signed-off-by: Taylor Blau <me@ttaylorr.com> Acked-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Taylor Blau committed Mar 18, 2025 at 18:50 UTC 3809633d0adb77b02ba8cfe87578134e6a30f54d
5 files changed +9 -12
builtin/pull.c
+1 -1
@@ -738,7 +738,7 @@ static const char *get_tracking_branch(const char *remote, const char *refspec)
738 const char *spec_src;
739 const char *merge_branch;
740
741 - refspec_item_init_or_die(&spec, refspec, REFSPEC_FETCH);
741 + refspec_item_init_or_die(&spec, refspec, 1);
742 spec_src = spec.src;
743 if (!*spec_src || !strcmp(spec_src, "HEAD"))
744 spec_src = "HEAD";
refspec.c
+2 -2
@@ -233,7 +233,7 @@ void refspec_clear(struct refspec *rs)
233 int valid_fetch_refspec(const char *fetch_refspec_str)
234 {
235 struct refspec_item refspec;
236 - int ret = refspec_item_init(&refspec, fetch_refspec_str, REFSPEC_FETCH);
236 + int ret = refspec_item_init(&refspec, fetch_refspec_str, 1);
237 refspec_item_clear(&refspec);
238 return ret;
239 }
@@ -249,7 +249,7 @@ void refspec_ref_prefixes(const struct refspec *rs,
249 if (item->negative)
250 continue;
251
252 - if (rs->fetch == REFSPEC_FETCH) {
252 + if (rs->fetch) {
253 if (item->exact_sha1)
254 continue;
255 prefix = item->src;
refspec.h
+3 -6
@@ -32,11 +32,8 @@ struct refspec_item {
32
33 struct string_list;
34
35 -#define REFSPEC_FETCH 1
36 -#define REFSPEC_PUSH 0
37 -
38 -#define REFSPEC_INIT_FETCH { .fetch = REFSPEC_FETCH }
39 -#define REFSPEC_INIT_PUSH { .fetch = REFSPEC_PUSH }
35 +#define REFSPEC_INIT_FETCH { .fetch = 1 }
36 +#define REFSPEC_INIT_PUSH { .fetch = 0 }
37
38 /**
39 * An array of strings can be parsed into a struct refspec using
@@ -47,7 +44,7 @@ struct refspec {
44 int alloc;
45 int nr;
46
50 - int fetch;
47 + unsigned fetch : 1;
48 };
49
50 int refspec_item_init(struct refspec_item *item, const char *refspec,
remote.c
+2 -2
@@ -143,8 +143,8 @@ static struct remote *make_remote(struct remote_state *remote_state,
143 ret->prune = -1; /* unspecified */
144 ret->prune_tags = -1; /* unspecified */
145 ret->name = xstrndup(name, len);
146 - refspec_init(&ret->push, REFSPEC_PUSH);
147 - refspec_init(&ret->fetch, REFSPEC_FETCH);
146 + refspec_init(&ret->push, 0);
147 + refspec_init(&ret->fetch, 1);
148 string_list_init_dup(&ret->server_options);
149
150 ALLOC_GROW(remote_state->remotes, remote_state->remotes_nr + 1,
transport-helper.c
+1 -1
@@ -162,7 +162,7 @@ static struct child_process *get_helper(struct transport *transport)
162
163 data->helper = helper;
164 data->no_disconnect_req = 0;
165 - refspec_init(&data->rs, REFSPEC_FETCH);
165 + refspec_init(&data->rs, 1);
166
167 /*
168 * Open the output as FILE* so strbuf_getline_*() family of