From 35be5a7c65a47e3547c5b6250141e135ee109a6d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Jonas=20=C3=85dahl?= Date: Thu, 8 May 2014 23:39:49 +0200 Subject: [PATCH] scanner: Generate macros for getting the 'since' version of an event MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 --- src/scanner.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/src/scanner.c b/src/scanner.c index 28fadb0..80c466e 100644 --- a/src/scanner.c +++ b/src/scanner.c @@ -578,6 +578,18 @@ emit_opcodes(struct wl_list *message_list, struct interface *interface) 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 emit_type(struct arg *a) { @@ -1004,6 +1016,7 @@ emit_header(struct protocol *protocol, int server) if (server) { emit_structs(&i->request_list, i); emit_opcodes(&i->event_list, i); + emit_opcode_versions(&i->event_list, i); emit_event_wrappers(&i->event_list, i); } else { emit_structs(&i->event_list, i);