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scanner: Generate macros for getting the 'since' version of an event

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This could be useful for compositors who need to be able to not send
events if the client bound a version lower than the newest provided.

Event version numbers are exposed as
[INTERFACE_NAME]_[EVENT_NAME]_SINCE_VERSION for example wl_output.scale
will have the version macro WL_OUTPUT_SCALE_SINCE_VERSION.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
This commit is contained in:
Jonas Ådahl 2014-05-08 23:39:49 +02:00 • committed by Kristian Høgsberg
parent e2b1218422
commit 35be5a7c65
1 changed files with 13 additions and 0 deletions
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13
src/scanner.c
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@ -578,6 +578,18 @@ emit_opcodes(struct wl_list *message_list, struct interface *interface)
printf("\n"); printf("\n");
} }
static void
emit_opcode_versions(struct wl_list *message_list, struct interface *interface)
{
struct message *m;
wl_list_for_each(m, message_list, link)
printf("#define %s_%s_SINCE_VERSION\t%d\n",
interface->uppercase_name, m->uppercase_name, m->since);
printf("\n");
}
static void static void
emit_type(struct arg *a) emit_type(struct arg *a)
{ {
@ -1004,6 +1016,7 @@ emit_header(struct protocol *protocol, int server)
if (server) { if (server) {
emit_structs(&i->request_list, i); emit_structs(&i->request_list, i);
emit_opcodes(&i->event_list, i); emit_opcodes(&i->event_list, i);
emit_opcode_versions(&i->event_list, i);
emit_event_wrappers(&i->event_list, i); emit_event_wrappers(&i->event_list, i);
} else { } else {
emit_structs(&i->event_list, i); emit_structs(&i->event_list, i);