[PATCH wayland 6/6] scanner: Generate macros for getting the 'since' version of an event

[Kristian Høgsberg]

On Thu, May 08, 2014 at 11:39:49PM +0200, Jonas Ådahl wrote:
> 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.

Yeah, that's a little more readable I guess.  This and previous patches
applied, thanks.

Kristian

> 
> Signed-off-by: Jonas Ådahl <jadahl at gmail.com>
> ---
>  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
> @@ -579,6 +579,18 @@ emit_opcodes(struct wl_list *message_list, struct interface *interface)
>  }
>  
>  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)
>  {
>  	switch (a->type) {
> @@ -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);
> -- 
> 1.9.1
> 
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